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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 sharpoverheadprojector 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! Mobile Generally a step up from the Ultra-Mobile class in brightness and features, these projectors are designed for presenters on the move. This class is great for small-to-medium sized presentation environments. These units sharpoverheadprojector are typically 8 to 13 lbs. Conference The Conference class projector is designed for either permanent or portable applications. Work station connectivity and control system interface is available for most of these projectors. The typical sharpoverheadprojector weight is 13 to 30 lbs. Projectors are designed for the professional environment. Applications would include large classrooms, conference/training facilities, engineering and design, and religious venues. The typical weight for these projectors is over 30 sharpoverheadprojector lbs. Under $3,000.00 In this price range, you find mostly SVGA projectors that offer under 500 lumens of brightness and may or may not include zoom lenses and other accessories such as cables, cases and remote controls. These machines usually make great projectors for small training or classrooms where control of light is offered. $3,000.00 to $5,000.00 A step up in class, these projectors are typically SVGA ranging from 550 to 800 lumens. ©2003 www.sharp-projectors.com. All rights reserved. |