Dang, the tint and cri look amazing! I have 4 of their 5mm hi cri warm emitters, 2 in my magnified headlight and really like them. I would love to see them make a high power led.
When you mentioned you had to buy one hundred I thought to myself that you scored a couple for testing from the manufacturer. I laughed when I read the second post. You bought a hundred. Now that is taking one for the team. Your enthusiasm is commendable. Thanks for the testing.
If you get stuck with a heap of left over leds I’d be happy to donate a few bucks to you for the cause. Cheers.
I have some Osram high CRI of the same size, and when you use them without optics they’re really wide angled and no (hardly any) tintshift.
Great for a headlamp for close up stuff.
Question:
Is it noticeable that these little buddies have cyan in their spectrum?
I think they are great for a close-up headlamp. If you are in improvisation mode you can stick one of these
into one of these
and put that in one of these
You will not notice the cyan, we humans can not see narrow wavelength bands. There has been some discussion on CPF that high CRI leds are somewhat rosy because of the lack of this band and compensating the tint for that is in principle easy but that compromises the CRI.
These seem great for retrofitting to a magnifying-type desk lamp.
I just did mine the past weekend, using some neutral white 4014 LEDs from Aliex. Nice improvement, the original 5 mm ‘straw-hat’ LEDs were horrible in comparison. The PCB is single-sided and made for through-hole LEDs, but flipping it over and flowing the LEDs to the through-hole pads was not too difficult. 40 LEDs at 20 mA give plenty of light in that setup with no heat.
Don’t expect quantitative tests like Djozz’s or Maukka’s. I will only use my camera, not the best valid test for comparing CRI, but it’s just fun thing to do.