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The Ultra-High-Performance lamp, a high-pressure mercury arc lamp often known by the Philips trademark UHP, was originally known as the ultra-high-pressure lamp, because the internal pressure was as much as 200 atmospheres. It was developed by Philips in 1995 for use in commercial projection systems, home theatre projectors, MD-PTVs and video walls. Unlike other common mercury vapor lamps used in projection systems, it is not a metal halide lamp, but uses only mercury. Philips claims a lifetime of over 10,000 hours for the lamps. These lamps are highly efficient compared to other projection lampsa single 132 watt UHP lamp is used by DLP manufacturers such as Samsung and RCA to power their DLP rear-projection TV lines, however Laser Display technology could be the superseding technology due to its increased longevity and display characteristics. == Known manufacturers of high pressure discharge lamps (UHP or similar) == * Canon (NSH) * Iwasaki (HSCR) * Osram/Sylvania (P-VIP) * Panasonic, Matsushita (HS) * Philips (UHP) * Phoenix (SHP) * Ushio (NSH) * Panasonic (UHM) * Epson 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Ultra-high-performance lamp」の詳細全文を読む スポンサード リンク
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