Thursday, September 30, 2010

LCD Projector Lamps

One of the few LCD projector parts that can be replaced is the projector lamp. LCD projector lamps vary by model, so selection usually depends on the manufacturing company and types such as Incandescent, Compact Fluorescent, Halogen, and HID such as Metal halide and Low/High Pressure Sodium, 3M Projector, Full Spectrum, and Ballasts, to name a few.

The total lamp life is the expected operating time of the projector lamp, which is expressed in terms of hours. Most LCD projectors use a metal halide source with a lamp life of 750 to 4,000 hours or more. Lamp life is not a very useful measurement, since they gradually grow dimmer without burning out and will continue to function even if they are too dim to be considered usable. So the term "peak lamp life" - the time the lamp will last at eighty to ninety percent of total brightness - is commonly used by manufacturers.

In contrast to metal halide lamps that burn with a very white light, halogen lamps burn with a yellowish light, at a steady rate, and have a consistent brightness throughout lamp life; but they only last approximately seventy hours per bulb. Therefore, they are also less expensive.

LCD projector lamps last the longest when the LCD projector is operated in "economy mode," frequently powered down for cool-down periods, and operated in a clean, fairly dust-free environment. Projectors that are subjected to constant use have the highest probability of lamp failure before the end of the rated hours.

LCD Projectors provides detailed information on LCD Projectors, LCD Projector Rentals, LCD Projector Lamps, LCD Video Projectors and more. LCD Projectors is affiliated with Cheap LCD TVs.

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Monday, September 20, 2010

Tips For Buying Genuine Sanyo Projector Lamps

For a long time, projector owners had no choice but to buy replacement Sanyo projector lamps from the manufacturer via their high street retailer, or by post. This was a slow and expensive exercise. Also, there were a lot of Sanyo projector bulbs to choose from, meaning only the most popular models were kept in stock. You might have to wait for weeks until your lamp came in.

Two things have happened recently to change this. The first was the arrival of online stores. These are usually free from the confinements of storage depots and warehouses, and can order Sanyo projector lamps - plus numerous other brands - direct from the wholesaler. The second was the rise in manufacturers supplying genuine, quality alternatives to Sanyo's own lamps. These are made to the same high standards as the originals, and in fact are often purchased from the same OEM.

OEM means original equipment manufacturer. Owing to the highly specialised nature of the product, there are only a handful of faculties making projector lamps across the globe. Each will supply a number of companies, such as Sanyo, Toshiba, Sony etc, working from the blueprints supplied by those companies. They also supply lamps to o.

These products are not fakes. They are identical to the manufacturer's originals in everything but name. Often, the same bulbs are used. Otherwise, a trusted name such as Osram or Phillips manufactures them. There are two types of Sanyo lamp: one is heavily marketed and boasts media-winning packaging. The other comes in a plain wrapper without the frills. But either way, inside the box is a Sanyo-quality product.

So, why are projector lamps so special? They are sold as an integrated unit, comprising a number of delicate and specialised components. The key to all this is an ARC tube filled with mercury vapour at very high pressure. This is ignited and then maintained by a complicated system of electrical ballasts, designed to give optimum light without risk of the bulb overheating or exploding. Pressurisation of the bulb and calibration of the ballasts is subject to intense quality control in both Sanyo original, and alternative brand lamps.

The one thing you must be sure of, when looking for value Sanyo lamps online, is to go to a supplier selling both branded originals and alternative replacements. These suppliers are authorised dealers for Sanyo (although always check) and will never knowingly sell fake, badly manufactured bulbs. Avoid any site that is selling so-called Sanyo projector lamps for ridiculously low prices. Making projector lamps is a precise and exact science; thus there has to be a "cut off point" price-wise.

Be particularly wary of very low cost "manufacturer's originals" on sites not offering an alternative. They will tell you that, with prices this low, why would you want to buy Sanyo projector lamps from anyone but Sanyo themselves? The truth is they are not from the OEM that supplies Sanyo projector lamps. They most certainly are not manufacturer's originals. At best, they are badly put together reconditioned items that are potentially dangerous to both you and your projector.

The author James Kean represents JP-UK, a specialist UK supplier of projector lamps and bulbs as well as ink toners and cartridges. For further information, follow the link for projector lamps and find out more.

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Friday, September 10, 2010

Buying Genuine Epson Projector Lamps Online

Epson is one of a number of projector brands for which it is possible to buy low-cost projector lamps online. Gone are the days of ordering Epson projector lamps from under-stocked retail stores, or ordering by post and telephone and having to wait for days. Now, you can log straight on to an internet store and pick from hundreds of products - usually, with next day delivery. Such stores significantly undercut retail store prices, since they don't have the overheads that the retail stores do.

There are also companies that specialise in supplying projector bulbs of most brand types, including Epson projector bulbs, and many of these companies deal exclusively online - cutting their costs still further and allowing even higher savings. They pare marketing and packaging costs down to the bone - passing the savings on to the consumer. Of course, if you choose to buy alternative projector lamps rather than the originals, you should be careful that their lamps are not dangerous fakes. Genuine Epson projector lamps are sourced from the OEMs (original equipment manufacturers).

People often ask: What's the difference between Epson projector lamps and Epson projector bulbs? The answer is nothing - but they are different to normal bulbs. Replacing a projector bulb isn't just a matter of popping a new one in the socket, like a light bulb. The key component is an ARC light (the same sort used in football stadiums). This is filled with mercury vapour at extremely high pressure - a dangerous combination. The light is ignited by an electric spark and is then maintained at a lower voltage.

Mercury vapour bulbs are complex pieces of technology, with a variety of electrical components. The most important of these are ballasts which, after the initial arc has been fired, control the quantity of current being fed through the bulb. The bulb may also contain a starter, a third electrode and a thermal switch.

The vapour pressure has to be exact, and the ballasts calibrated very precisely, to ensure optimum safety and efficiency. Mercury vapour bulbs are fragile and easily broken, meaning there's danger from both flying glass and escaped mercury. It's also easy to damage the lamp and/or projector if you try to replace the ARC bulb yourself. For this reason, projector lamps are created as an integral unit, the bulb sealed behind a reflector which protects the user from heat, mercury and UV radiation (the heat inside Epson projector bulbs exceeds that of the sun!)

Unfortunately, there are unscrupulous online retailers selling poor quality fakes. Often branded to look like the manufacturer's original, they are usually recons, put together in sweatshops well away from the strict quality controls that Epson and their OEMs insist upon. So be very wary of online stores selling unfeasibly cheap Epson projector lamps. As you can see, manufacture is a highly specialised process, labour intensive and on a small scale.

If you're on a budget, use an online store that supplies original Epson projector lamps - and is an authorised Epson supplier.

The author James Kean represents JP-UK, a specialist UK supplier of projector lamps and bulbs as well as ink toners and cartridges. For further information, follow the link for projector lamps and find out more.

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Saturday, September 4, 2010

Digital Projector Lamps - Tips To Maximize The Life Of Your Digital Projector Lamp

Digital projectors are a great addition to any home or office and the advantages of having one don't need to be explained here. However the joys of having the big screen image, hooked up to your surround sound in the lounge are all too often shattered with the globe, often remaining that way for several months until you can afford a new one.

Digital projector lamps are a powerful light source used to transport the image from the projector to the screen. While very strong for their designed purpose, omitting light, the same cannot be said about their durability, a point of contention with many a disgruntled digital projector owner.

Although digital projector lamps are rated with an estimated life in hours, typically a lamp will peter out after 2,000 to 3,000 hours of use, many fall short of the indicated life. There are number of reasons for this. Like with all manufactured products there will be faults. While most projector lamps come with warranties ranging from 30 days to 6 months, research shows that many projector bulbs blow after the expiration of the warranty but well before the indicated lamp life. I own a Hitachi LCD projector and have experienced this problem first hand Not only did my lamp blow after only 1000 hours use but it also exploded inside the projector. After learning the hard way myself here are a few tips to avoiding similar problems, while maximizing the protection of, and hence, life of, your expensive projector lamp.

Always check and clean your air filter before use, especially if it has been stored. Dust build up in the air filter pad can cause lamp cooling problems resulting in overheating, lamp explosion and in some cases fire.

Never move your projector during use. When the lamp is hot it is most vulnerable. A slight jolt could easily cause the lamp to blow.

Always allow the lamp to fully complete its cooling cycle before turning your digital projector off.

Ask your dealer to clean the inside of your projector once a year to avoid excessive dust builds up.

For more helpful advice about choosing the right digital projector for your needs or for more information about digital projector lamps and accessories click here [].

Chris Hopkins is an event specialist with several years experience using digital projectors both in the commercial environment for seminars, conferences and concerts and in the home for personal viewing pleasure. Chris manages [], a website providing useful tips and information to help you choose the perfect digital projector.

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Monday, August 30, 2010

Projector Lamps

Projector lamps are used as the light source in projecting devices. For example; a movie projector is a device for displaying moving pictures, and this is achieved by projecting them onto a large screen which is usually set at some given distance from the movie projector. These types of projectors are known as opto-mechanical devices.

There are many different types of devices and projectors about today and most of them will usually require some type of light source.

The size and shape of projector lamps and bulbs vary enormously due to the huge range and types of projecting equipment that is available in the market today. A bulb that is suited to the old type movie projector, will be very different from the lamp or lamps that are required to fit into a rear projection television, and will function in a very different way.

There are many different types of Projector Lamps available and some of these will include:



· Projection cubes

· Interactive whiteboards & rear projection TV bulbs

The lamps may be installed by a specialist or in many cases installed by the projector owner or operator. To install a lamp or bulb always make sure the screws or bolts of the terminals are not too tight as theses can break the ceramic part and damage the isolation of the lamp. However if they are not tight enough, they can cause too big a charge on the ballast causing it to break.

Always make sure the bulb is well housed in its cartridge. There may be a tendency to stop at the first sign of resistance. Continue applying pressure on the base of the bulb until it is well fixed within the cartridge.

Projector lamp terminology can be a bit confusing. Here are a few terms explained;

Lamp modules: are made up of two elements; the lamp or bulb and the cage or housing which includes an electrical connector.

Lamps: are high performance lights

Original lamps: are developed by the original lamp developer

Compatible lamps: are lamps that are not the same type as the original lamp.

Copy lamps: are lamps produced by unregulated manufacturing companies.

If you are in need of this service check out our product pages, they contain many companies that specialise in this. John Cheesman writes about Projector Lamps. Visit the Businessmagnet product page for details and suppliers of Projector Lamps.

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Friday, August 20, 2010

Things to Remember When Buying Dell Projector Lamps

It's never a good idea to wait until Dell projector lamps lamp blow before buying replacements. People avoid keeping a spare because they think Dell lamps are expensive. However, this is false economy - without a working lamp, a projector is just a piece of useless hardware, so why take the risk? Besides, it isn't always necessary to buy branded products. There are unbranded Dell projector lamps that are just as good as the genuine manufacturer's replacement - except they lack the Dell logo and accompanying price tag.

The important thing to ensure when buying unbranded Dell lamps is that they are made to the same high standards as the original. This means seeking out a reputable supplier - preferably, someone who sells both unbranded Dell projector lamps and the manufacturer's original versions. This company will value its customers highly, know their products and will be keen on maintaining good relationships with Dell.

The most important influence on cost is the lifespan of the lamp. Depending on the manufacturer, Dell lamps can last anywhere from 1000 to over 4000 hours. However, this must be offset against the manufacturing quality. It is pointless buying a cheap 4000 hour lamp if the bulb blows the moment the projector is moved.

Remember, though, that this works the other way, too. Original projector lamps have a finite lifespan - they are designed to need replacing after a safe number of hours by the brand manufacturer. This ensures that old lamps won't damage the projector, but it also means you may get a longer life from an original.

Original Dell projector lamps are high quality products that are designed to last a long time and using these branded lamps ensures your projector model is covered under the manufacturer's guarantee. However, good quality unbranded alternatives can be made to exactly the same stringent specifications. The best way to know what you're getting is by checking the "kite" mark. All lamps must undergo strict quality control tests to ensure the potentially dangerous mercury vapour does not come into contact with the outside air, and that users are protected from the dangers of shattering glass. They must also have the density of mercury vapour laid down by Dell.

Although buying online is cheaper than buying offline, don't be lulled into a false sense of security by so-called Dell projector lamps which seem unrealistically cheap. Just as with perfumes and fashions, there are fake projector lamps on the market which use realistic branding and packaging to create "manufacturer's original" products which are nothing of the sort. Invariably they have been made in cheap foreign sweat-shops where safety and quality control is non-existent. It is far safer to buy a quality checked, but unbranded lamp from a trusted supplier.

When it comes to Dell projector lamps, most people play safe and buy the original from a reputable known stockist. However, this often means they take a chance and don't keep a spare. A far better option is to have the manufacturer's original lamp fitted, and then order a low cost non-branded "spare" from a trusted supplier who offers a money-back guarantee. That way, you are covered from all angles.

The author James Kean represents JP-UK, a specialist UK supplier of projector lamps and bulbs as well as ink toners and cartridges. For further information, follow the link for projector lamps and find out more.

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Tuesday, August 10, 2010

Projector and Projector Lamps

Every person who has experience in business knows that it is impossible to make a lasting impact without audio visual aids. So for a good presentation one needs to have projectors. They are indispensable. Projector lamps are things one can not do without in business and also educational arenas. They help transfer images from a multimedia projector on to a large screen so that you can deliver your sales pitch or information with the help of visuals.

At first projectors were run on halogen lamps, which gave a yellow tone to the images. Now lamps use metal halide bulbs (mercury vapor) that produce excellent white light and give sharp images.

Not only are these lamps being used in business but are also increasingly being used in homes and informal settings to view movies on home theatres. Home theatres have wide screens on which the images from the projector are magnified using properties of reflection and transferred on to the screen.

These projector lamps can be used in many ways; they project films, slides and even images on transparent plastic sheet. You can easily make out from their names i.e. slide projectors, multimedia projectors and overhead projectors. Slide projectors are priced reasonably but others are expensive to purchase. Now, apart from these projectors listed above, we also have the most commonly used projectors, i.e. the overhead projectors. These are commonly found in schools where instructors use them to display information on a screen. These projectors enliven a class room and make even the dry-as-dust facts palatable and easily understandable for the students.

The lamp can be called the heart of the projector. No lamp - no image! So the lamps need to be taken care of. They are sensitive to movement and are fragile. Since they can be damaged easily, care should be taken while moving the projector. Always allow the projector to cool down before moving it. While changing lamps care should also be taken. Touching the glass housing, however inadvertently can cause the lamp to burst since our skin has a layer of oil. Therefore it is better to handle the lamp only via its metal case. Another important precaution to take is to keep the projector and the lamp at room temperature. Extreme weather (especially winters) can be hazardous to the lamp's life.

Even though technology has improved and with it the life span of projector lamps has also increased. Whereas it was 1000 hours earlier, now lamp life is up to 2000 hours. However lamps are expensive and using all the precautions is advisable. Whenever possible, one should use the lamp in economy mode. The images are less bright but the lamp life-span is not affected. By compromising a bit on the brightness, the projector lamp lasts longer.

Exercising these very small precautions makes it much easier to not only enliven a class room but also make a significant impact in the conference room or even watch a movie at home on a wide home theatre screen. You will not have to worry about the costs of the lamp or bother with frequently changing the lamp.

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Thursday, August 5, 2010

Keep the Light Burning on Your Digital Projector Lamp

A digital projector is a wonderful way to watch television and movies, and its popularity is on the rise. The one complaint that people have about the projector is that the lamp burns out too soon. That is something that can be fixed, though. If users would heed certain advice, they would be able to keep their lamp burning for much longer than the average projector owner.

When you first get your digital projector, invest in a surge protector. If a digital projector is exposed to electrical surges, the lamp is more likely to burn out before it is supposed to. Users can avoid that from happening by simply plugging the projector into a surge protector.

Once you have purchased the surge protector, dust the room you are going to put the projector in. Dust and projectors do not get along. If you keep your projector free of dust, your lamp will also be able to burn longer. Make sure that you dust the room frequently, as dust can creep up in a room. It is important that you stay on top of it for the health of your projector and lamp. If your projector has dust filters, make sure you take them out regularly and clean them too.

You can also adjust the mode in which your projector runs in order to lengthen the life of your bulb. If you use the economy mode on your projector you will be able to get more use out of the bulb before it needs to be replaced. In most cases, you will not even notice a difference in picture when you switch to economy mode ( however if you seek a perfect picture this may not be the best option). This is the easiest way to increase the time between changing bulbs.

Also, be mindful of how often you turn the projector on and off. A lot of stress can be put on a projector and its lamp if it is switched on and off often. As a rule, keep from turning the projector on and off often in order to increase not only the life of the projector lamp, but the life of the actual projector as well.

When your projector is on, you need to keep your eye on it to make sure that the lamp does not overheat. If you allow your lamp to overheat, the chances of it burning out quickly are increased. Instead, make sure that the lamp does not overheat so you can optimize performance and get the most out of the lifespan. Do not block any fans.

A digital projector is a great way to bring theater quality entertainment into your home. By keeping an eye on the lamp and how you use it, you can get more hours of use out of it. If you want to be able to keep your projector low maintenance, follow these tips and you will have a much easier time handling your projector and lamp. Also, you will save money because you will not have to replace the bulbs as often.

Laura Coates is one of two Direcrors at Chase AV Direct. Chase AV Direct specialise in audio visual accessories, including projector lamps.

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Friday, July 30, 2010

The Facts Behind Genuine Sony Projector Lamps

There is much more to a projector lamp than meets the eye; it is certainly not just a simple bulb. Sony projector lamps for instance are incredibly bright, and they only achieve this brightness via a complex chemical and electrical system, housed in a sealed module.

The lamps are precision-made components that require specialised equipment and intensive, skilled human input. It stands to reason therefore that there are few manufacturers in the world with the necessary specialist equipment to build them.

All this makes the lamp by far the costliest part of any projector; thus it follows that they are expensive to replace.

How Sony's projector lamps work

Not so long ago, projectors used halogen lamps, which gave a low intensity yellow light and burned out quickly. As digital technology arrived, so did the new generation of powerful metal halide lamps. This powerful light (Sony's projector lamps average 1000 lumen or higher) is necessary to activate the LCD or DLP panel that then produces the superior images modern projectors are known for.

Sony projector lamps operate by sending an electrical current across an ultra-high pressure ARC tube containing mercury vapour. The tube responds by generating an incredible amount of heat - hot enough to vaporise the mercury vapour, which then responds by generating a bright light (or plasma) onto the LCD screen.

ARC lamps contain various gases; Sony projector lamps contain mercury vapour as this produces an intense, white light ideal for image projection.

The pros and cons of Sony projection lamps

Metal halide lamps produce an incredibly high light output for their size, making them ideal for use in compact, modern Sony projectors. Although they are expensive, they typically last for 2000 hours or more - much longer than the old halogen bulbs.

The downside of this is the amount of heat they produce - a cause of early burnout - and the safety aspect. Sony projector lamps need special fixtures to enable soft operation. They are also a "point" light source, so need auxiliary components, such as quartz reflectors, to focus the light where it's needed.

Why genuine projector lamps from Sony cost what they do

Replacing a worn-out projector lamp is about more than just a bulb. Mercury vapour is hazardous, especially when it is igniting under pressure. Therefore, the bulb has a thick glass lens in front to protect the user should the bulb explode.

Sony projector lamps are linked to auxiliary systems, which control the electrical discharge levels during start-up and operation. During assembly it is extremely important the bulb is aligned correctly with the reflector and this must be remembered when it is replaced so the projectors are designed to make this process simple.

A projector bulb is rather delicate, and can easily be damaged. This makes replacement of the bulb alone a specialist job, best left to a qualified technician. Instead, Sony projector lamps are sold as a complete unit, comprising both the projector bulb and housing making it easy for anyone to install a genuine Sony projector bulb.

Although this makes Sony projector lamps a little more expensive, it also means the average user can replace them with just a basic screwdriver and saving much more money in the long term.

The author James Kean represents JP-UK, a specialist UK supplier of projector lamps and bulbs as well as ink toners and cartridges. For further information, follow the link for projector lamps and find out more.

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Sunday, July 25, 2010

How to Ensure Projector Lamps Last As Long As Possible

Like many bulbs, the projector lamp is a delicate object albeit much more expensive than your average household bulb so it is important to ensure your lamps last as long as possible. It is surprising to see how some places only need a new projector lamp every few years and others require them every few months. Here is some advice to help ensure your projector lamps last as long as possible:

Let the projector cool

This is probably the main reason why projector bulbs may need replacing more often when people do not allow the project lamp to cool before they move the projector or switch it back on again. Many projectors power down on their own so do not move the projector whilst in this mode. If you have an older projector model, you might have an on/off switch for the bulb and a separate on/off switch for the machine. In this case, switch the projector off first and once that has powered down, then switch the projector off.

Similarly, do not move, shake or bump the projector whilst the projector is still switched on. They are very sensitive and movement could cause the projector to blow or shorten its life.


If the projector bulb is overheating, then it will burn out earlier than it should. The main reason for overheating is when users do not clean the projector filter regularly. It should be cleaned once every three months or so with a can of compressed air but the frequency should be increased to monthly if the projector is in a dusty environment. Another sure way to overheat your projector bulb is to block the fan exhaust so take note where the fan is on your projector and make sure it has a minimum of two or three feet of room to breathe.

Never touch the lamp because your fingers have natural oil on them and this oil can also cause the projector lamp to overheat and burn out prematurely. Only touch the metal housing.

Save projector lamp hours

Most modern projectors nowadays have what is called an economy or eco-mode. This uses less brightness from the projector bulb meaning the projector lamp will last much longer so don't use more brightness than you need.

Keep the projector at room temperature

Projector lamp sales always increase in the spring or after summer holidays. The main reason for this is that people leave their projector in the cold over winter or even in the car for a day or two. The quick change in temperature will cause a projector lamp to blow if you switch a cold projector on so let it warm to room temperature first. Never leave the projector in the car or in extreme heat because the projector lamp will overheat and burn.

Following these tips should give you months of extra use from your projector bulb. This is by no means an exhaustive list of tips to help make sure your bulbs last as long as possible but it does include the main reasons that a projector lamp may have a shortened life.

The author James Kean represents JP-UK, a specialist UK supplier of projector lamps and bulbs as well as ink toners and cartridges. For further information, visit for projector lamps.

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Wednesday, July 21, 2010

Don't Only "Think Big, See Big" With Projector Lamps

If you are looking for a good presentation, you definitely need to use an audio visual aid. As such, projector lamps are an indispensable device used in business and educational organizations, where they are used to transfer images from a multimedia projector on to a larger and wider screen.

These lamps have actually replaced the halogen bulbs that were used earlier and that gave a yellow tone to the images. On the other hand, the projector lamps basically use metal halide bulbs (mostly mercury vapor bulbs) that produce excellent white light and thus enhances the quality of the image.

These lamps do not only have professional uses, but are also used widely at homes for movie or home theaters. They can send the movie or film images on the big screen for a larger audience to see. The working of the projector lamp is based on the property of reflection where the lamp shines onto a number of small mirrors that is placed inside the projector. The image is then transferred through the air and is finally visible on the screen.

The projector lamps have varied uses - they are used to project films, slides, as well as images drawn on a transparent plastic sheet. These lamps are categorized into three main types, namely, slide projectors, multimedia projectors and overhead projectors. While slide projectors are quite reasonable and are used solely to project slides measuring 35 millimeters to demonstrate certain materials at hand, the multimedia projectors are quite expensive. They have the ability to transfer a film reel, a videotape or a DVD to a blank wall or a large screen.

Apart from these, there are overhead projectors that have a much simpler use. They mostly have an educational use, where the teacher or the demonstrator, uses it to display the content on a blank screen for an entire class.

Keeping in mind the vitality of these lamps, it is but obvious that these lamps need proper attention and care. It should be remembered that these lamps are quite sensitive to movement and moving the projector while the lamp is on can cause serious damage to the projector. Moreover, care should be taken while changing the projector lamp, as touching of the glass housing of the lamp is strictly prohibited. This is because the oil from our fingers can result in bursting of the lamp, and therefore, it is recommended that the lamp should be handled only through its metal case.

Last but not the least, these lamps are meant to be used in room temperatures and extremities of the climate, especially extreme winters, are quite hazardous for the lamp.

With the advent of latest technologies, the life expectancy of projector lamps has increased from 1000 hours to almost 2000 hours. Some of the most expensive multimedia projectors also have an astonishing life of 4000 to 6000 hours. However, older models also show an extended life if used properly, particularly if they are used in an economy-mode, where the setting uses less brightness from the lamp.

Thus, by sacrificing a little brightness, you can save a lot of money as your projector lamp lasts quite longer. Hence, you can bring in the space age to your living rooms, classrooms and conference rooms with these amazing projector lamps.

Anita Agrawal is a content writer who has wide experience and expertise in writing articles on various topics. Find more articles written by her. For example, for latest tips and ideas about dogs, visit her dog's website at

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Saturday, July 17, 2010

Benefits of a High-Quality LCD Projector Lamp for Your LCD

In terms of multimedia presentations, LCD projectors have proven to provide impressive image quality and high resolutions. However, if your projector suddenly fails to work and you need to present a proposal with potential clients, it could cause your business to lose money, or worse, it could cause your job.

The most common problem of projectors is the sudden burn out of LCD projector lamps. Fortunately, these LCD projector lamps can be easily replaced. Although anyone can replace the lamps for your LCD projector, choosing the lamp can be an overwhelming task. You need to ensure that the type of lamp you buy is compatible with your projector.

A high-quality LCD projector lamp should be able to operate for over 4,000 hours. However, the measurements of lamp life are not reliable because the lamp can still work, even if it becomes dimmer. For this reason, you need to check the "peak lamp life" listed in most manufacturers of LCD projector lamps, which provides users with information of the total brightness a particular lamp could provide.

Choosing a high-quality lamp for your LCD projector should be your first concern, instead of price. Compared to the affordable halogen lamps that last about 70 hours, metal halide lamps can work up to 500 hours. Meaning, the more expensive LCD projector lamp you choose, the longer-lasting life it would provide.

How to Choose an LCD Projector Lamp

There are only two types of lamps used in LCD projectors - metal halide and tungsten halogen. In order to choose a quality lamp, you have to understand how each one works.

A metal-halide lamp provides better brightness, but lower consumption of power. Be aware that lamp wattages do not reflect the brightness. Metal-halide LCD projector lamps are more efficient because it could provide your projector with a very white light until the end of its life.

On the other hand, tungsten-halogen lamps produce whiter lights because it runs at a higher temperature than other lamps. Although the white light will become yellow during its lifetime, it provides a longer lamp life because of its low-pressure and high temperature features.

Although metal-halide LCD projector lamps are more expensive, they could provide over 2,000 hours compared to the tungsten-halogen lamps' 70 hours of operation. Be aware that lamps of your projectors could last longer when you operate them in "economy mode", which automatically cools down when the projector becomes idle.

How to get the best LCD Displays, TVS, computer monitors and more. This is must read before you decide to buy... LCDs and LCD Displays [], at []

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Wednesday, July 14, 2010

How to Change a Projector Lamp

There are a few things that you should know to ensure that you not only change your bulb properly, but that it is done at the right time to avoid injury or damage to your projector.

When to change the projector lamp

Sometimes, you will know when to change the bulb because one day you will switch on the projector and it will not work. There are a number of environmental factors that can shorten the life of a projector lamp because the bulbs are delicate objects. Factors such as letting the bulb cool before moving the projector, not cleaning the filter or even storing the projector lamp in a cold or warm place can all shorten its expected lamp life.

However, assuming this is not the case, you should see a message appear on the projector stating something along the lines of 'Lamp Life Exceeded'. When this message appears, you should replace the bulb. It is an important point that you should not exceed the lamp life by more than 20 percent. Older bulbs become very fragile and this is usually the case when you hear of them exploding. This is not only dangerous but can damage your equipment.

It is always useful to have one or two replacement projector lamps on hand to ensure you can replace the bulb at the right time and use the projector when you need to.

To tell how old your bulb is, there is usually an option in the menu of the projector showing how many hours have passed. There should also be a reset option for when you install a new lamp.

How long should a lamp last?

A typical lamp will last for around 2000 projection hours. Genuine lamps may seem expensive with prices typically between £150 and £500 but when you work this out, that is only 8p to 25p per projection hour.

As with all models, no matter how old the lamp is it can take just one sharp knock, or being left in an extreme temperature for a short while, to adversely affect the life of the bulb so it is worth keeping a replacement bulb on hand.

How to change a projector bulb

Possibly the most important point is to ensure that you only purchase genuine replacement projector lamps and you must get the right one for your model. Never use a bulb intended for another brand or model, such as using Epson projector lamps in a Sony projector.

Make sure the old bulb has sufficiently cooled; otherwise it may explode with handling. As a general rule, ensure that your projector has had around 30 minutes to cool.

Unplug the projector and remove the lamp cover, which is normally on the bottom of the projector and is held in place with screws or a clip. Remove the lamp module and the old lamp. Reverse the process to install your replacement bulb, switch the power back on and check the new lamp works. Remember to reset the projector hours in the lamp life menu option.

Disposing of the old bulb

Be sure to dispose of your old lamp carefully. Projector lamps should be recycled to ensure environmental safety.

The author James Kean represents JP-UK, a specialist UK supplier of projector lamps and bulbs as well as ink toners and cartridges. For further information, visit for projector lamps.

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Sunday, July 11, 2010

White Paper on Projector Lamps


Purpose of this white paper

The purpose of this white paper is to provide an overview of the current projector lamp market, including the emergence of UHP lamps, compatible lamps, specialist lamp distributors and the underlying economic conditions.

This paper is divided into sections. The main ones are on projector lamp technology and the economic factors. These are followed by an appendix and glossary.

Lamp technology


The lamp is the primary component of the illumination system in a projector. It is usually accessible behind a door in the projector so that it can be replaced. Sometimes a projector will have two lamps; they may be used at the same time or one may take over when the other fails.

Most common projectors use metal halide lamps, ultra high pressure lamps (UHP), variants of UHP and, in larger projectors, Xenon lamps. Although the Xenon lamps are smaller than those in film projectors, they use the same technology. Xenon lamps naturally achieve better colour reproduction than metal halide lamps, which are red deficient, but they aren't as energy-efficient and they don't last as long.

What I'm calling a lamp is actually a lamp module. It consists of a bulb and a reflector in a housing, with electrical contacts for receiving power.

The reflector

The reflector projects the light from the bulb onto a component in the projector called an integrator. This takes the form of either a "fly-eye" lens (so named because its surface is composed of multiple lens elements in a rectangular array, much like the compound eye of an insect) or a light pipe, the latter either a rectangular glass rod or a rectangular mirrored tube. Its purpose is to homogenise and shape the light beam to ensure uniform illumination of every pixel with minimal wasted light.

The design of the reflector is very important, as it has to collect as much light from the bulb as possible. It looks like a hemisphere but is usually elliptical or parabolic in cross section.

Reflectors vary in sophistication. For example, a fourth-power parabolic reflector is much more accurate and even in its distribution of light waves emitted from a focal point than a second-power parabolic. Fourth-power parabolic reflectors, however, are more difficult to accurately manufacture.

Then there are the elliptical reflectors. One of the properties of an ellipse is that it has two focuses (or foci). If you have a light source at one focus of an ellipse, the light beams that hit the ellipse are reflected so that they come together at the second focus (see diagram by downloading the actual whitepaper at

This concentrates the light from a lamp onto a lens so that you get as much light as possible delivered to the screen. If your source is bigger than a single point, some of the beams do not originate precisely at the first focus, and thus end up missing the second focus point and straying. Also, the wider the ellipse (meaning the greater the distance between the two focal points) the larger the beam spot will be at the second focus.

Bulb size and stray beams of light

As you would expect, stray beams cause problems. Light that is not funneled through the optics will strike other surfaces inside the projector, reducing brightness on the screen, and increasing heat in the projector. You may also get annoying and distracting light leaking through vents in the projector.

Furthermore, stray light may find its way back into the optics, and end up striking the screen in places where it should not. This impacts the contrast of the image. Instead of showing solid black, the stray light will lighten the black into gray.

An interesting solution to the problem of stray light beams is to reduce the size of the light source. The ideal source would be infinitely small. Any stray light would be infinitesimally small. There would be no noticeable loss of brightness (or luminance - the amount of light produced).

So the goal has been to make as small a projector lamp as possible.

This takes us to the bulb itself. Metal halide lamps spark across a gas-filled gap to create the light. The gaps are typically 2 mm or larger. Such sizes can cause colour and luminance stability problems. They also tend to deposit materials such as tungsten on the lamp while it is on, reducing brightness early on in the life of the lamp.

In 1995, Philips introduced the ultra high pressure lamp (UHP). These lamps are not metal halide lamps. Instead, they use an arc in a pure mercury vapor under very high pressure. The pressure is typically over 200 atmospheres or 200bar (a car tyre is typically under 3bar).

The arc gap tends to be much smaller than those of the metal halide lamps, typically 1.3 to 1.0 mm across. This smaller light source is much more efficient. A 100 watt UHP lamp in a projector can deliver more light to the screen than a 250 watt metal halide lamp.

Other influential factors

I will briefly cover other factors that are influential in the design and manufacture of a projector lamp.

The reflector has to be engineered to give an even field of light (no hotspot in the middle), the glass of the lamp needs to be as transparent as possible, and the filament as free as possible of impurities (they affect the colour temperature of the output).

Then there is the dichroic coating of the reflector. This allows infra-red light (heat) to pass through while reflecting visible light, thereby reducing the amount of heat shooting through the LCD element (or at the DLP mirrors if your projector is a DLP one).

Then there are the materials used. A projector lamp is made of material resistant to high pressure and high temperature.

To see the sections on Economics (Market Conditions, Investment, The Supply Chain, Compatible Lamps) and the Appendix (Lamp Life, The Difference Between a Bulb, a Lamp, a Housing and a Module), download the actual White Paper on Projector Lamps from

Bob Wilkins, Tekgia ( []).

Download a White Paper on Projector Lamps: Projector Lamps [].

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Friday, July 9, 2010

Projector Lamp Advice

Projector lamps

New projectors are supplied with a new lamp fitted, which for the average projector lasts around 2,000 hours. For business use, using a projector 7 hours a day, 5 days a week, the lamp should last over a year.

Replacement lamps or lamp modules

Majority of projector lamp manufacturers give a 3 months RTB warranty on new lamps. This warranty commences from date of purchase/invoice.

Lamps or lamp modules

Manufacturers lamps vary, but can be sold as "lamp only" or as a lamp module, as shown above.

When replacing a new lamp into the existing lamp module housing, a suitably qualified electrician or on-site professional should only undertake it. It is important to ensure the terminals are not over tightened as the ceramic can be cracked and reduce the electronic insulation of the bulb. Similarly, if the bulb is under tightened, it can cause arcing on the terminal, which puts undue load on the ballast that can lead to failure.

Lamp modules are more commonplace and can be likened to car headlights, where you buy the "unit" which just slots in. To replace a lamp module, you simply undue the necessary screws on your projector, lift out the old lamp module, insert the new lamp module and tighten the screws. Obviously, specific instructions on how to replace bulb modules will vary slightly from projector to projector, so the instruction manual should be consulted and the replacement undertaken by a suitably qualified person.

Useful tips on prolonging lamp life

Never touch the lamp with your fingers, always use a cloth for handling. Deposits from fingerprints cause temperature "hot spots" and temperature gradient stresses the glass often resulting in earlier lamp failure.

Keep the air filters of your projector clean as block filters make the lamp overheat, possibly causing earlier lamp failure. There should always be good airflow around the projector.

Always switch off the projector using the remote control and not by disconnecting the power. The projector will invariably go into a cool down mode where the image is turned off and the fan accelerates to cool the lamp in a controlled manner. The temperature of an operating lamp is many 1,000's of degrees, so if you disconnect the power to the projector, prior to the above process, the glass in the lamp will cool unevenly and will result in stress fracture, causing early lamp failure. We are led to believe that you can shorten your projector lamp life by up to 50% simply by disconnecting the power instead of switching off the projector by remote control and allowing the natural cooling process to take place.

Lamp failure can also be due to mechanical shock and vibration. A hot lamp filament is fragile and you should always ensure the unit is turned off and the lamp is cool before moving the projector.

If your projector has a high/low lamp/lamp switch, you can extend your average lamp life by using the "low lamp/lamp" position whenever possible.

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Thursday, July 8, 2010

How to Find the Right Home Projector for Your Home

Some people think that buying a home projector is the same as buying a TV or AV system. The cost, of course, has everything to do with which home projector that you finally decide to buy but in actual fact, spending a little bit more time researching and finding out more about home projector systems can make your investment more worthwhile.

Brightness, typically, is measured in ANSI lumens. For a typical home projector system, the brightness can range anywhere between 700 and 2,000 lumens. The brightness, itself, does not determine the quality of the picture that you will receive from your home projector. The environment of your home will pretty much determine the outcome. Therefore, before you buy a home projector, take into account the ambience of the room that you'll be placing the home projector system in. If you have a special TV viewing room with controlled lighting, you don't and won't need a home projector that gives out too much brightness. However, if you're placing the home projector in the living room where there are open windows or ambient lighting, you'll need a far brighter home projector to make it worth your while.

Most experts recommend that TV rooms or dedicated home theatre spaces need a 700 lumens home projector or more. Rooms with ambient lighting should use a home projector with at least 900 lumens or more. In open spaces or living rooms with extremely high lighting, you'll need a home projector with at least 2,500 lumens.

When shopping for your home projector, take a quick look for a menu that is easy to use. Some professional or business home projectors are not as user-friendly as the projectors made for home users. Your home projector should make it as hassle-free as possible for you change the color, brightness, switch between HDTV and NTSC and adjust your video input sources. Most home projectors come with a remote control because it could be hard if your home projector is fixed on the ceiling or high up on the wall, but be careful and be sure to ask the sales person if the home projector unit that you're interested in buying comes with a remote control.

Do you want to mount the home projector on the ceiling or place it on a table? Well, both options have its advantages and disadvantages. Mounting the home projector on the ceiling gives more space, creates a more polished look for your viewing area. It won't be knocked off the table by kids and saves you time since you don't need to unpack, take it, install, and set the home projector up every time you want to use it.

With a light home projector, you can probably lift it from place to place without too much effort. With these home projectors, placing it on the table for each use is probably not a problem at all. In fact, portability has its can literally take your home projector with you everywhere you go!

Dakota Caudilla, journalist, and website builder Dakota Caudilla lives in Texas. He is the owner and co-editor of [] on which you will find a longer, more detailed version of this article.

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The Right Projector Screen Can Save You Money!

At the LCD Projector Center we concentrate very much on LCD projectors, so why am I writing about projector screens? Quite simple really. Buying your lcd projector in isolation from the screen without considering how they work together is likely to cost you more and give you less than perfect results.

How can picking the right projector screen save you money?

One of the biggest challenges when choosing an lcd projector is getting the right brightness for the room you are going to be using it in. For home use you can usually darken the room. This means you can buy a cheap lcd projector, often saving many hundreds, if not thousands, of dollars.

But often darkening the room significantly is neither possible nor desirable. Buying a higher specification projector will give you a brighter image, but it's probably cheaper to buy a high gain projector screen. The quality lcd projector may cost you a thousand dollars more than a dimmer model, whilst quality projector screens that enhance the image brightness and clarity are only a few hundred dollars more.

Projector Brightness and Screen Gain

The brightness of an lcd projector is given in ansi lumens. Typical values for home theater and business presentation use are 500 to 3000. The higher the number, the brighter the picture will be. At the low end a darkened room is essential, whilst at the very top end acceptable results are possible with higher light levels. The current generation of home use projectors are typically in the 1000-1500 range.

The gain of a projector screen is the increase in brightness of the image produced compared to a flat matt white screen. This is given as a simple number, eg 1, 1.5, 2 etc. A gain of 1 means the image is the same brightness as on a flat matt white surface, whereas 2 means the image is twice as bright.

As an example, if you decide you need about 1500 lumen to get an acceptable quality picture, you could buy a projector with that rating and worry about the screen later. Or you could buy a cheaper 1000 lumen model and match it to a projector screen with a gain of 1.5. This would give you an effective image brightness of 1500 lumen at a reduced cost.

Very High Gain Projector Screens

Typical cheap projector screens have gains of between 1 and 1.2. Gains of 1.5 to 1.8 are achieved with high quality perlescent finishes at about double the cost. If money is no object and you need the maximum gain possible then you need a chromatically matched projector screen.

Gains of up to 4 can now be achieved with matched projectors and screens. An lcd projector only transmits 3 narrow wavelengths of light in Red, Green and Blue. A matched projector screen is covered with material that reflects only these wavelengths. Almost all of the ambient light is absorbed or scattered, so the projected image appears very much brighter.

The Downside of High Projector Screen Gain

Whilst projector screen gain might help you use a cheap lcd projector in brighter rooms than it could cope with on its own, there are 3 trade-offs. These are the viewing angle, color shifting and uneven brightness.

High gain projector screens limit the viewing angle. For a screen with a gain of 1 the picture appears high quality out to about 50 degrees from the projector. But at a gain of 1.5 that viewing angle is reduced to about 35 degrees. Over 2 and the viewing angle is down to around 25 degrees, making it much more difficult to layout your room.

Color shifting happens due to the surface properties of the higher gain screens. A true white screen will render colors accurately. By trying to manipulate the way light reflects, a high gain screen can cause a shift in some of the colors. This is rarely a reason not to buy, unless you really do need the colors to be spot on.

The biggest impact a high gain projector screen has on image quality is the change is brightness from the center of the screen to the edge. There can be up to 30% difference at gains over 2. This is usually not too much of a problem, but it does become far more noticable the higher the viewing angle.


A little research and a bit of leg work could help you make great savings. Treat the projector screen as an integral part of your system and buy it together with your projector. Visit stores and insist on demonstrations with a variety of lcd projector and screen combinations.

Choosing a good quality, moderate gain (1.4-1.6) projector screen can decrease the cost and increase the performance of your system. A cheap lcd projector can produce a bright, clear image at higher than expected light levels. So whilst your projector screen may cost more, overall you save. brings together all the latest news and reviews from the world of LCD Projectors. Research your home theater or business presentation LCD Projector at

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