Lamp life is commonly discussed in terms of " Half Life". This simply means the manufacture has set a limit on what they feel is the quality life of the lamp. If the lamp half life is 2000 hours, the lamp will generally last much longer although the brightness of the image may deteriorate. For example, on an LCD projector, the lamp half life is generally 2000 hours. The image brightness is normally above 85% of the original brightness up to 2000 hours. After 2000 hours you may see a drastic reduction in brightness. DLP projectors normally have less of a life and the brightness generally starts deteriorating before the half life. DLP & LCD Digital Light Processing (DLP): The commercial name for this technology from Texas Instruments (TI): The technology inside is often referred to as either "micro-mirrors", or DMD: It works this way: build a few hundred thousand tiny mirrors, and line them up in 800 rows of 600 mirrors each. Now attach a hinge to each of those 480,000 mirrors. Attach each of those 480,000 hinges to its own very tiny motor! Power each motor with electrostatic energy!

LCD projector technology on the home theater market. Hopefully that will change sometime soon. Billed as an "all-purpose" multimedia projector, it does have a lot to offer. At only 13 lbs, this sleek little light cannon serves up screaming bright images in data and graphics, in composite and S-video, in component video, and The on-screen menu is much better than on earlier models. Each control is intuitive and easy to operate, and the menu boxes take up very little screen area. Furthermore, the menu boxes can be relocated from the upper left corner to the lower right corner to provide flexible viewing of the screen while adjustments are being made. You would think that with the heavy duty light output of 2000 ANSI lumens, an industrial strength blower would be required to cool the system. Not so. There are four color temperature options on the Three are factory preset, and the fourth you can roll your own. On our review sample, we measured the first setting at D7500, the second, at D10500, and the third at D5900. On the fourth, we found it very easy to dial in an exact D6500.

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