An ultra-high-performance lamp, often known by the

Philips Koninklijke Philips N.V. (), simply branded Philips, is a Dutch multinational health technology company that was founded in Eindhoven in 1891. Since 1997, its world headquarters have been situated in Amsterdam, though the Benelux headquarter ...

trademark UHP, is a high-pressure mercury arc lamp. These were originally known as ultra-high-pressure lamps, because the internal pressure can rise to as much as 200 atmospheres when the lamp reaches its operating temperature. It was developed by

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 A metal () is a material that, when polished or fractured, shows a lustrous appearance, and conducts electricity and heat relatively well. These properties are all associated with having electrons available at the Fermi level, as against non ...

, as it 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 The watt (symbol: W) is the unit of Power (physics), power or radiant flux in the International System of Units (SI), equal to 1 joule per second or 1 kg⋅m2⋅s−3. It is used to quantification (science), quantify the rate of Work ...

UHP lamp is used by DLP manufacturers such as

Samsung Samsung Group (; stylised as SΛMSUNG) is a South Korean Multinational corporation, multinational manufacturing Conglomerate (company), conglomerate headquartered in the Samsung Town office complex in Seoul. The group consists of numerous a ...

and

RCA RCA Corporation was a major American electronics company, which was founded in 1919 as the Radio Corporation of America. It was initially a patent pool, patent trust owned by General Electric (GE), Westinghouse Electric Corporation, Westinghou ...

to power their DLP

rear-projection TV Rear-projection television (RPTV) is a type of Large-screen television technology#Projection television, large-screen television set, television display technology. Until approximately 2006, most of the relatively affordable consumer large screen ...

lines. It is used in many LCD and DLP

video projector A video projector is an image projector that receives a video signal and projects the corresponding image onto a projection screen using a lens system. Video projectors use a very bright ultra-high-performance lamp (a special mercury arc l ...

Known manufacturers of high-pressure discharge lamps (UHP or similar)

* EYE/Iwasaki (HSCR) (AC only), Japan based. * Osram/Sylvania (P-VIP / NeoLux) (AC only), Europe based company. * Panasonic, Matsushita (HS, UHM) (AC only), Japan based company. * Philips (UHP) (AC only), Europe based company. * Phoenix (SHP), Japan based company. * Ushio (NSH, UMPRD, NSHA), Japan based company. * Epson (E-TORL) (Made by EYE/Iwasaki), Japan based company. * In the initial UHP lamp development stage, Philips and Osram took a lead, and focused on AC (alternate current) technology and has cross patent sharing with each other. As a result, Japanese companies focuses on DC (direct current) technology to bypass European patents.

Chinese lamp manufacturers

Manufacturers mostly in China have been reported to be making inferior counterfeit lamps. In the UK, one lamp distributor was prosecuted for supplying counterfeit Epson lamps that seriously damaged an Epson projector in Germany. In India, 400 people complained of irritation and swelling in eyes after several China-made halogen lamps burst during a cultural program. As an increasing number of counterfeit lamps are being sold, projector manufacturers, such as Optoma and Epson stress the importance of authentic and original lamps. Optoma and Epson hold the biggest projector market share in DLP and LCD respectively.

Devices using UHP lamps

DLP rear-projection TV sets. *

Sony is a Japanese multinational conglomerate (company), conglomerate headquartered at Sony City in Minato, Tokyo, Japan. The Sony Group encompasses various businesses, including Sony Corporation (electronics), Sony Semiconductor Solutions (i ...

LCD A liquid-crystal display (LCD) is a flat-panel display or other electronically modulated optical device that uses the light-modulating properties of liquid crystals combined with polarizers to display information. Liquid crystals do not em ...

rear-projection TV sets. * Most digital projectors manufactured post 2001 (except

LED A light-emitting diode (LED) is a semiconductor device that emits light when current flows through it. Electrons in the semiconductor recombine with electron holes, releasing energy in the form of photons. The color of the light (corresp ...

projectors) * Olympus ILP-2 high-intensity light source * Mitsubishi DLP projection televisions * Barco Sim7 series

LCoS Liquid crystal on silicon (LCoS or LCOS) is a miniaturized reflective active-matrix liquid-crystal display or "microdisplay" using a liquid crystal layer on top of a silicon backplane. It is also known as a spatial light modulator. LCoS initia ...

simulation projectors *

Epson Seiko Epson Corporation, commonly known as Epson, is a Japanese multinational electronics company and one of the world's largest manufacturers of printers and information- and imaging-related equipment. Headquartered in Suwa, Nagano, Japan, t ...

LCD projectors * Acer DLP projectors * Moving Head Fixtures * Golf Simulators - Typically Short Throw Projectors * Video Walls

References

{{reflist

External links

Philips, UHP lamp manufacturerTexas Instruments' DLP website
Gas discharge lamps