Hoop
Enlightened
I'm remodeling my garage and turning it into a shop. The lights I intend to install will be custom made arrays of Nichia "NVSL219AT-H1 4500K, 92 CRI, B10 Bin" LED's from Illumination Supply, powered by a 320w meanwell driver, hooked to a dimmer. The overall output of the luminaries will approach 20,000 lumens, and should achieve a lux of over 1,000 in this space at full brightness.
EDIT: Changed to 180 LED's and three drivers. 60 LED's per driver in 12s5p configuration, driven at 1340ma each. At 70% optical efficiency this will be approximately 40,000 lumens. Lux should be about 640. My original Lux calculation is incorrect. /End Edit
I am worried about glare. I think I will need to diffuse the led's to some extent. LED downlights in stores that I've seen are recessed cans and have a diffuser over the leds. There is no secondary optic besides the can baffle. A led with a diffuser in front of it is going to output 120 degrees and beyond, but I assume this would be ok considering other types of light sources do this and it isn't so bad. I have ordered some ledil TIR optics which are 26mm in diameter and appear to have a somewhat diffused face. I also have some ledil reflectors to try but these are not diffused. I went with wide viewing angles such as 50 degrees FWHM.
I am wondering if I should skip optics and just put a diffuser directly in front of the LEDS. I would like to mount the lights on the outside of the drywall rather than recessing them, for ease of installation and better heatsinking.
Another option is to make really mini cans with the ledil reflectors I got, and to put a diffuser film over the reflector.... I think this may be what I end up doing, barring any good suggestions.
Next will be tape and mud....
EDIT: Changed to 180 LED's and three drivers. 60 LED's per driver in 12s5p configuration, driven at 1340ma each. At 70% optical efficiency this will be approximately 40,000 lumens. Lux should be about 640. My original Lux calculation is incorrect. /End Edit
I am worried about glare. I think I will need to diffuse the led's to some extent. LED downlights in stores that I've seen are recessed cans and have a diffuser over the leds. There is no secondary optic besides the can baffle. A led with a diffuser in front of it is going to output 120 degrees and beyond, but I assume this would be ok considering other types of light sources do this and it isn't so bad. I have ordered some ledil TIR optics which are 26mm in diameter and appear to have a somewhat diffused face. I also have some ledil reflectors to try but these are not diffused. I went with wide viewing angles such as 50 degrees FWHM.
I am wondering if I should skip optics and just put a diffuser directly in front of the LEDS. I would like to mount the lights on the outside of the drywall rather than recessing them, for ease of installation and better heatsinking.
Another option is to make really mini cans with the ledil reflectors I got, and to put a diffuser film over the reflector.... I think this may be what I end up doing, barring any good suggestions.
Next will be tape and mud....
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