Like microsurgery when it was swapped in one of my BLF348’s…. I really like it more than the 5000K… Very nice in total darkness as it doesn’t hurt my night vision as much… Less output, but still plenty of light…
Mmm, this has somewhat piqued my interest on these again.
With a driver like this 3-4x3 W Watt High Power LED Light lamp Driver Power Supply 85-265V 600mA, 3 of these emitters on alu stars mounted on 40×40×11mm heatsinks would make for a nice ≈350 lumens bedroom light. Of course, I'd have to attach all of that stuff to some sort of light fixture… 
Cheers ^:)
Nah, ya don’t.
I hate the glare of overhead lights, so have a MR12-ish LED light mounted in a “flowerpot” bulb-socket + cord + inline-switch aimed at the ceiling to give a nice mellow diffuse ceiling-bounce effect.
Could just mount the critters in series on an Al block/strip, use a 12V wall-wart instead, and you can stick a suitable resistor in series with it. Eg, if 3V per LED (@700mA), that’s 9V, from 12V, leaves 3V headroom. For 0.7A, R = 3V/0.7A ~ 4.2Ω. Salt’n’pepper to taste. (3.9Ω would probably be the closest standard value.)
Mmm, no overhead fixture I was thinking on. Just a single E14 socket corded desktop lamp I have lying around.
Of course, the leds would be driven in series. That's how the driver I linked would handle them.
I was thinking in setting up the heatsinks around the lamp's tube in a triangular shape, for all-around light distribution. Maybe some cheap PMMA plano-convex lenses attached with hot glue over the emitters would also do nice… 
Cheers ^:)
I have a few of these coming from fasttech, figured I could toss them in some cheap hosts to replace the LB emitters they came with, can’t be worse then that I figure. From extreme blue to extreme yellow lol.
I would say that they would be quite a bit better than “can’t be worse”. I really like the tint these emitters produce, super warm and golden, very pleasant to the eye.
Fwiw, the 21mm lenses at FT are a perfect fit for MiniMags, if you wanna do a mod and turn it into a nice flooder.
Almost a perfect fit over a 20mm star, too, so easy centering.
Seconded.
Not nearly the nasty lemon-yellow that some “WW” LEDs are.
I have some in my S30RII triple with a frosted TIR.
They make a great nightstand light with that cosy and warm tint !
23mm acrylic plano convex lenses at less than $1… a 10-pack. Yeah! :-)
Damn I'm cheeeap! 
Thick looking, short focal lenght. Seem similar to the ones I've found on SK68 clone flashlights (∅22mm OD).
Cheers ^:)
They’re very orangy-yellow(ish).
I put one in a SingFire 348 and it’s like incandescent light, not halogen but ‘old fashioned’ normal lamp.
Kind of cool, in a warm white way… :sunglasses: