Raising CRI with colored LED's?

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Horsefeathers

Newly Enlightened
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Jun 1, 2012
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Hello folks,

After reading blasterman's Easy Bridgelux DIY thread I thought I'd look into giving it a try for shop/garage lighting. As I recall the CRI of a Bridgelux BXRA-56C1600-B-00 or BXRA-C5000-00E0C is 70 at 5600k. So, being totally new to LED's and lighting tech, I was woundering if it was possible to raise to the CRI by adding a few red leds close to the Bridgelux emitter?

Cheers!!

Horsefeathers

P.S. I don't know how I ended up in the Homemade and modified flashlight forum. Thought I was posting to the fixed light forum. Please chalk it up to my being new on this forum.
 
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I think your need a whole range of color LED's to ad to your cri, resistering each one a little different so they have a similar output. A showerhead style light with a diffuser lens may be the simplest result.

An easier route would be the Nichia B10 4500k 92cri emitter That's out now. It's a little vanilla-ish but has what I consider nearly tintless tint. It doesn't mask any colors like the hi cri XPG.

Eala has found 4500k and 5000k 5mm Nichia LED's with 85+ cri

I hope I've helped some :) what's the light your trying to mod look like?


Are you lighting your shop? Strip light or bulb?
 
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"what's the light your trying to mod look like?"

I have been using the old standard twin 4 foot fluorescent tube fixtures, but now that I am between shops I thought I'd make a fresh start with LED's. Perhaps mounting the LED's to an aluminum channel or into an existing incandescent fixture if I can figure out a way to deal with the heat. As that most shops have >8 foot high ceilings I am looking at the 2000 plus lumen Bridgelux's. Blasterman's DIY thread was pretty sweet from a cost point of view taking into account the price of power supply and emitters--however the Wakefield heatsink price has me trying to come up with other ways to cool the led's.

Horsefeathers
 
I've seen led strip lighting outside gas stations is now popular, and in the city archive. If they came in a warmer color temp I'd be stoked.
Im not trying to light anything, though I buy the 10-13 watt led bulbs for the light fixtures at home. 3000k color temp may not be hi cri but it sure feels cozy :)
 
You can buy 3000K fluorescent tubes, they would be a hell of a lot cheaper than getting a suitably tinted LED and way brighter too.

Wouldn't daylight bulbs be a better working light ?
 
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