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LED Not Retro fitted
Posted by sboverie
19th Apr 2012
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Usage energy efficiency is not the ONLY desirable light bulb quality
Posted by lighthouse10
22nd Apr 2012
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Videoprojector bulb, anyone?
The 3000-930-HD-C gives 3000 lumens, which sounds adequate for a videoprojector replacement bulb. Is there anyone manufacturing such bulbs already?
Posted by Dukhalion
19th Apr 2012
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LED Not Retro fitted
Having a different standard for connecting an LED light into a lighting system is the smart way to go for the industry. The expensive LED light bulbs have not helped sell LEDs as a practical lighting source; and it does not help when the LED bulbs are seen as expensive and short lived. Having a different style and fitting for LED light fixtures will go a long way to reduce the cost of the LED light source and make it last longer.
Posted by sboverie
19th Apr 2012
0
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Usage energy efficiency is not the ONLY desirable light bulb quality
RE All the "efficiency" talk here, in all the LED articles:
1. Energy efficiency is just one type.
There is also the small matter of constructional and performance efficiency
It is much simpler, and cheaper to construct a bright incandescent than a bright LED bulb
- in fact omnidirectional 100W equivalent bright LED replacements for ordinary bulbs can't be bought regardless of price.
2. All lighting types have advantages - energy saving is only one.
The overall switchover energy savings are small anyway, referenced http://ceolas.net/#li171x
3. LEDs have several issues of their own
They are in effect pure light sources in spectrum output, somewhat like lasers,
sometimes as with phosphorescent coating (as with white LEDs) to spread the light, but then mimicking CFL light quality.
They so not have the same smooth spectrum as incandescents, even with filters,
and their CRI is nearly always lower, and often ???tweaked???, so photographers and filmmakers are unhappy about rendition too.
http://ceolas.net/#li15ledax
.
1. Energy efficiency is just one type.
There is also the small matter of constructional and performance efficiency
It is much simpler, and cheaper to construct a bright incandescent than a bright LED bulb
- in fact omnidirectional 100W equivalent bright LED replacements for ordinary bulbs can't be bought regardless of price.
2. All lighting types have advantages - energy saving is only one.
The overall switchover energy savings are small anyway, referenced http://ceolas.net/#li171x
3. LEDs have several issues of their own
They are in effect pure light sources in spectrum output, somewhat like lasers,
sometimes as with phosphorescent coating (as with white LEDs) to spread the light, but then mimicking CFL light quality.
They so not have the same smooth spectrum as incandescents, even with filters,
and their CRI is nearly always lower, and often ???tweaked???, so photographers and filmmakers are unhappy about rendition too.
http://ceolas.net/#li15ledax
.
Posted by lighthouse10
22nd Apr 2012