Independent tests have shown that copy lamps (branded or otherwise) give poorer life, brightness and build quality; we value our reputation and that of our resellers with the projector user and so only supply 100% genuine performance lamps. UHP™ technology was developed in 1995 by Philips, who have become established as the largest manufacturer of lamps for projectors in the world. This evolution in lighting technology gave a light output and lifetime never experienced before and rapidly become the cornerstone for practically all projector bulb manufacturers. The bulb is a complex mix of chemicals, including mercury, and precision electronics packaged in a sealed glass bulb pressured to over 200 atmospheres (a car tyre pressure is less than 4 atmospheres). The unit is expected to operate at above 8000k – hotter than the sun! – but it also has to be handled as a spare part that members of the public can replace themselves; quality and safety are everything. Original bulb manufacturers – there are seven globally – work closely with projector OEMs to ensure the lamp set-up delivers the optimum performance within the projector setting. Original lamps undergo rigorous testing throughout the manufacturing process to ensure they meet quality and performance standards. Independent Testing! Dec 2007 – Comparison of Philips original bulbs with a variety of copy/compatible lamps. Photometric Testing The ANSI lumen values for the Philips front projection DLP™ lamps are on average 32% higher compared to lamps from compatible players A and C. The ANSI lumen values for the Philips front projection LCD lamps are on average 46% higher compared to lamps from compatible player A. The luminance in the centre of the rear projection LCD TV is on average 54% higher for the Philips lamp compared to the lamps from compatible players A and B. The luminance in the centre of the rear projection DLP™ TV is on average 218% higher for the Philips lamp compared to the lamps from compatible players A and B.
commissioned by Philips, undertaken by Kema.
For each different lamp type, 5 lamps from each brand were ordered via the Internet or external suppliers to ensure that no pre-selection of product took place. Application ANSI Lumens DLP Dell Projector LCD Sanyo Projector Lamp Type 200W 1.0 E19 200W 1.0 E19.5 Philips 1535 1845 Compatible player A 1287 1264 Compatible player B - - Compatible player C 1065 - Application Luminance DLP Samsung
RPTVLCD Sony
RPTV Lamp Type 100W 1.0 E23 100-120W 1.0 P22 Philips 418.1 335.3 Compatible player A 151.8 188.8 Compatible player B 133.1 252.4 Compatible player C - - Conclusion: The Philips original lamps offered a vastly superior performance to the copy lamps tested.
Tuesday 11 November 2008
Copy Lamps, a false economy.
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