I'm waiting for the cool white high CRI LEDs, which seem to be too few.
Me too!
NS3W183A-H1 is 92 CRI @ 5400k. Unfortunately it can only be driven at a little over 100 lumens. More unfortunately, the smallest quantity I can get them in is 1400 pcs.
Bummer. Is this Cree or Nichia?
High CRI at around 5000K would be my preference (that's more or less at the high end of neutral white). We can keep hoping!Plenty of LEDs in high CRI that can compete with incans. Warmwhite is easy. I'm waiting for the cool white high CRI LEDs, which seem to be too few.
I agree wholeheartly. There are things I can do with the Rebels that I cannot do so easily with any other parts.Well of course you could visit the Lumileds web site for some pretty reasonable CRI parts at 3000, 4000, and 5000 K CCT.
http://www.philipslumileds.com/products/luxeon-rebel/luxeon-rebel-white
The design of the Rebel is either a pain or brilliant, depending on your perception. It moves the die squarely over the thermal pad and makes it much easier to design a board with good thermal properties vs a package with a small thermal pad sandwiched between the contacts. That being said, each package approach has it's tradeoffs.
NS3W183A-H1 is 92 CRI @ 5400k. Unfortunately it can only be driven at a little over 100 lumens. More unfortunately, the smallest quantity I can get them in is 1400 pcs.
I was thinking of a HDS High CRI for my (very) early birthday present, do any of you guys know what LED it uses? Aparantly it's a CRI of 93, and described as the cooler end of warm white. I hope it looks more neutral than WW.
I'm in the market for a close-task, high CRI flashlight with no more than 100 lumens. But 1400 pcs minimum?!?! Bummer.....
Thanks for the reply, I got that info off of GoingGear or something like that. I'd probably be getting the XP-G one. I emailed Henry and he said ETA about a month for the next batch of high CRI. I might try and find an old one though, I don't want it THAT warm.The old or new one? The old one used an SSC P4 which was 93 CRI @ ~4000k. I would describe it as the warmer end of neutral and the very cool end of warm. The new ones will (probably) use the Cree XP-G offering which is 90+ CRI @ ~2900k.
Ive seen the CREE XPG, 90-promised cri in 2600K isnt quite attractive, expecting sth @ neutral white1400pcs? I wonder if they would sell quickly on ebay and here. What do these boxes of Nichia's cost?
Bridgelux, Sharp, has various LED in the 90cri range.
http://bridgelux.com/products/ledarray.html
http://www.sharpleds.com/zenigata.html
http://ce.citizen.co.jp/lighting_led/en/products/index.html
The Edison edipowerII and some LEDengin's are also 80-85 in the lower warmwhite LEDs.
http://www.edison-opto.com.tw/01_led_products_list.asp?sn=1
http://www.ledengin.com/products/emitters
Cree XP-G, XP-E, SSC P4, and Rebel have some in the 90 range.
http://www.philipslumileds.com/products/luxeon-rebel/luxeon-rebel-white
http://www.cree.com/products/xlamp_xpg.asp
http://www.cree.com/products/xlamp_xpe.asp
http://www.acriche.com/en/product/prd/zpowerLEDp4.asp
http://www.i-led.co.uk/PDFs/SJ1 PowerStar White.pdf
http://catalog.osram-os.com/jsp/dow...0.pdf&url=/media//_en/Graphics/00059933_0.pdf
http://www.avagotech.com/pages/en/leds/high_power_leds/3w_mini_led_emitter_(high_cri)/
Don't forget that "marketing" can make CRI meaningless as certain manufacturers leave out the 'important' colors(R9-R15 often forgotten).
http://www.xicato.com/technology.php
http://www.nichia.com/specification/en/product/led/colorrendering.pdf
http://www.sharpleds.com/ledevolution.html (R1-R8 CRI alone is not enough)
Doesn't look high CRI judging by the spectrum. I'd say it's in the area of 70-75.I have these Nichia NSPWR70CS LEDs that I absolutely love! I have a feeling they have a good CRI but cant seem to find it on the datasheet. Can someone take a look ?
http://www.nichia.co.jp/specification/en/product/led/NSPWR70CS-K1-E.pdf
Is that 100 lumens at 350mA?NS3W183A-H1 is 92 CRI @ 5400k. Unfortunately it can only be driven at a little over 100 lumens. More unfortunately, the smallest quantity I can get them in is 1400 pcs.
Yes, I am also waiting for cool white LED lamps with high CRI (hopefully at least 92). My view is that they really need to fill in the part of the spectrum around 480 nm, it's really deficient in that range of frequencies. You would think they could develop some other phosphors. Another solution would be to just combine with some other frequency LED chip close to this range. Turquoise (495nm) LED chips exist, but they are difficult to find. If the deficiency in the spectrum cannot be filled, another strategy might be to narrow the range of deficient frequencies, from both sides. 505nm blue-green chips are also relatively common, as they are used in many traffic lights. There is also the 470nm version of the blue LEDs which are also relatively common.Warmwhite is easy. I'm waiting for the cool white high CRI LEDs, which seem to be too few.