The UHP, or Ultra High Performance, mercury arc lamp

Mercury-vapor lamp

A mercury-vapor lamp is a gas discharge lamp that uses an electric arc through vaporized mercury to produce light. The arc discharge is generally confined to a small fused quartz arc tube mounted within a larger borosilicate glass bulb...

 was developed by Philips

Philips

Koninklijke Philips Electronics N.V. , more commonly known as Philips, is a multinational Dutch electronics company....

 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

Metal halide lamp

Metal-halide lamps, a member of the high-intensity discharge family of lamps, produce high light output for their size, making them a compact, powerful, and efficient light source. By adding rare earth metal salts to the mercury vapor lamp, improved luminous efficacy and light color is obtained...

, 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 lamps - A single 132 watt

Watt

The watt is a derived unit of power in the International System of Units , named after the Scottish engineer James Watt . The unit, defined as one joule per second, measures the rate of energy conversion.-Definition:...

 UHP lamp is used by DLP manufacturers such as Samsung

Samsung

The Samsung Group is a South Korean multinational conglomerate corporation headquartered in Samsung Town, Seoul, South Korea...

 and RCA

RCA

RCA Corporation, founded as the Radio Corporation of America, was an American electronics company in existence from 1919 to 1986. The RCA trademark is currently owned by the French conglomerate Technicolor SA through RCA Trademark Management S.A., a company owned by Technicolor...

 to power their DLP rear-projection TV lines.
Manufacturers of high pressure discharge lamps (UHP or similar) include:

• Iwasaki (HSCR)
• Osram (P-VIP)
• Panasonic, Matsushita (HS)
• Philips (UHP)
• Phoenix (SHP)
• Ushio (NSH)

Devices using UHP lamps

• Samsung
  Samsung
  The Samsung Group is a South Korean multinational conglomerate corporation headquartered in Samsung Town, Seoul, South Korea...
  
   DLP rear-projection TV sets.
• Sony
  Sony
  , commonly referred to as Sony, is a Japanese multinational conglomerate corporation headquartered in Minato, Tokyo, Japan and the world's fifth largest media conglomerate measured by revenues....
  
   LCD rear-projection TV sets.
• Most Digital Projectors Manufactured post 2001 (except LED
  LEd
  LEd is a TeX/LaTeX editing software working under Microsoft Windows. It is a freeware product....
  
   projectors)
• Olympus
  Olympus Corporation
  is a Japan-based manufacturer of optics and reprography products. Olympus was established on 12 October 1919, initially specializing in microscope and thermometer businesses. Its global headquarters are in Shinjuku, Tokyo, Japan, while its USA operations are based in Center Valley, Pennsylvania,...
  
  ILP-2 High Intensity Light Source

External links

• http://www.philips.com/dpl Philips, UHP lamp manufacturer.
• http://www.fixyourdlp.com/ DLP information site, FixYourDLP.com.
• http://www.dlp.com/ Texas Instruments' DLP website.
• http://store.philips.com/store/rpeusb2c/en_US/DisplayCategoryProductListPage/parentCategoryID.30002100/categoryID.30009500?resid=ThMaCQoHAtcAAGRFz2QAAAAm&rests=1316519827814# Where to find original UHP TV replacement lamps: Philips official online webstore.com.
• http://www.lighting.philips.com/main/application_areas/projection/uhp_replacement_lamps.wpd Where to find original UHP FRONT PROJECTION replacement lamps: Philips Digital Projection Lighting website
• http://www.lighting.philips.com/main/application_areas/projection/brochure/IP_Brochure/index.wpd Make sure it's an original! : Philips Digital Projection Lighting official brochure to educate people on the importance of buying and using an ORIGINAL lamp