Big Book OF AV Europe Edition Page 190 Projector Lamps and Lenses

PROJECTOR LAMPS AND LENSES 190 Technology of Lamps Brilliant Pulse Pulse to boost blue or red. Increase lumens by reduction of transmission losses in green (for higher CT). Fixed Pulse plateau ratio. Dark Pulse Improve green dither noise (+2 bits). Enables lower cost solutions. Fundamental for the correct performance of a UHP lamp is the stability of the arc length, the correct dosing of the materials used inside the lamp and the quality of the materials. Incorrect manufacturing of the lamp can lead to (early) explosions, limited lifetime and loss of lumens. Explosions can damage the application. Next to the important quality process of the manufacturing of a UHP lamp, it is important to know that when Philips delivers a UHP lamp to an OEM to create a projector or rear projection television, this always is delivered together with a (high voltage) ballast. The system (lamp and ballast) is jointly developed and interacts with each other to ensure the picture on your screen is flutter-free and color reproduction is excellent. Philips has extensive release procedures in development and production to ensure the correct working of a specific lamp type with ballast, guaranteeing an optimal television or projection experience. Replacing the lamp will allow your product to perform like new. Philips UHP Technology OSRAM P-VIP Technology Imitation Original UHP High Speed Arc Gap Luminance vs. Color Temperature The first step is to manufacture the arc tube the stem-like structure in the middle of the lamp that actually produces the light. The dose of mercury and the associated halogen gas must be tightly controlled. The tungsten electrodes have a uniquely shaped tip that must be formed very accurately in order to prevent short life and flickering. The arc gap (typically 1.3 or 1.0mm) must be tightly controlled, otherwise the picture produced by the TV or FP will not be at full brightness. The spherical arc tube itself must be formed accurately, with each arc tube having the exact same shape and volume. Each arc tube is then "burned in" and assigned a serial number. All of these variables must be controlled for each arc tube AND then each one must be exactly the same as the one before it and after it! The arc tubes are then mounted, aligned, and cemented into place in a high performance dichroic-coated reflector. Each and every completed lamp is measured to ensure the required specifications are met. Often unmentioned are the large number of lamp and electronics engineers and the manufacturing engineers who work diligently behind the scenes to produce the "magic" of the P-VIP lamp. It takes years of experience to design and produce these types of products with the quality demanded by the marketplace. Poor quality imitations are being imported into our marketplace by companies that do not have the manufacturing or design experience to make premier quality lamps that have the original OEM lamp life, light output, and warranty support. OSRAM's original OEM quality is available in all its aftermarket products. While the price may not be the lowest, the risk certainly is. OSRAM manufactures and sells a complete line of RPTV and FP lamps from 100W -300W, with parabolic and elliptical reflectors, and in various configurations of closed, open, and slotted reflectors.

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