Talk:Ultra-high-performance lamp

I just made this page after reading about the lamp in my DLP projector, seeing there wasn't one. I'll try to fill it in later with more information from the cited article.Senatorpjt 11:38, 15 May 2007 (UTC)

Question: 10,000 hours?

Why do all my UHP/similar projector lamps have a recommended (and quite often device-enforced) lifespan of 1500~4000 hours, then? Conspiracy, or is Philips just badly stretching the truth? 10k hours is a long time for any kind of incandescent bulb to last, TBH, and particularly for high intensity flavours like these... Mind you for £200+ you'd expect a little more longevity than what a cheap GU10 or GLS can muster! 193.63.174.10 (talk) 12:39, 18 March 2010 (UTC)

The lifespan is important. The peak pressure in the lamp rises as the lamp ages. Once the allotted lifetime has been reached the pressure is as high as it can safely be allowed to reach. Working the lamp beyond its rated life (it will give forth light) risks the bulb bursting which invariably causes damage to the projector internals. When the projector says the maximum life of the lamp has been reached, replace it. 86.181.0.242 (talk) 18:03, 28 March 2021 (UTC)

Answer: 10,000 hours?

Dear commentor of above statement, the 10.000 hrs in the article refers to the application of rear television. The benchmarking done on these application show that these lifetimes are reached . The application of projectors ask a different brightness level and often require high power UHP lamps > 200 W. The common brightness level in which a projector is used allow life time today for up to 6000 hrs, but depends on the interaction between lamp and projector set. So life time of 10 k hrs can be claimed but indeed relates to the application in which it is used. For further information, please don't hesitate to contact us directly, The Philips Digital Projection team (www.philips.com/dpl) Tinne Van Deun Marketing Communications DPL Philips Turnhout tinne.van.deun@philips.com

Exciting end-of-life

Another reason that the lifetime of the lamps is explicitly limited by the firmware to a value well-short of the theoretical lifetime is that UHP lamps have a tendency to explode at the end of their life. As the arc becomes harder to maintain, more energy is expended in the arc and temperatures and pressures rise. Ultimately, the quartz envelope fails.

I know. I've seen it up-close when someone reset the lamp timer but didn't change the lamp.

Atlant (talk) 18:21, 23 December 2013 (UTC)

Reverted move

I reverted a move from "Ultra-high-performance lamp" to UHP lamp because the reason given for the move, "Former name is an invention of the English Wikipedia" was manifestly untrue. The paper by Derra et al. refers in paragraph 2 to the "ultra high performance (UHP) lamp system".

I am open to a discussion of moving the article if "UHP lamp" is really the better title, but note that standard Wikipedia practice is to use full names not acronyms in most cases.--Srleffler (talk) 16:37, 17 April 2022 (UTC)

References 2 and 3 both also support "ultra-high performance" as a name for this type of lamp, with ref 3 documenting an explicit name change from "ultra high pressure" to "ultra high performance".--Srleffler (talk) 16:45, 17 April 2022 (UTC)

I thought that this term is an invention of English Wikipedia, as the original term was Ultra High Pressure. But now I've searched for the current name, and there are lots of source, not necessarily copied from this article. זור987 (talk) 17:54, 17 April 2022 (UTC)

Be careful about assuming something is wrong just because it is outside your knowledge. There may be contexts you don't know or haven't considered. Terms for things can vary in different parts of the world, or over time. If you read something in an article that you think is wrong, it is often a good idea to ask about it on the talk page. Another editor may know something about it. --Srleffler (talk) 20:01, 17 April 2022 (UTC)