http://amerisus.com/?product=conturrent-ready-packs .
The 4" light is petite 250 lumens, in three color temperature ranges:
2700 to 3000°K Warm
4000 to 4500°K Cool
6000 to 8500°K Daylight
- Trim Ring Diameter 4.15″
- Ceiling Hole Diameter 3.75″
- Lamp Thickness (max) 0.80″
- Power Consumption 3 W
- Operating Voltage/Current 12VDC / 0.25A
- Light Output Full Brightness 250 lumens
- Dimmable Yes
- Temperature Rise (full brightness) 10°C above ambient
- Warranty 5 years
- Trim Ring Diameter 6.75″
- Ceiling Hole Diameter 6.25″
- Lamp Thickness (max) 0.80″
- Power Consumption 9 W
- Operating Voltage/Current 36VDC / 0.25A
- Light Output Full Brightness 800 lumen
- Dimmable Yes
- Temperature Rise (full brightness) 10°C above ambient
- Warranty 5 years
The active area of the lens is a 65.5 mm circle, area 3370 sq mm. Circle luminance is 250/3370 lumens per sq mm = 7,400 lumens per sq meter, 7400 Lux.
For this, I bought a nice 15 VDC power supply.
Just pure light within the 65.5 mm lens. I don't perceive edge glare at the diodes.
Lift out the lens stack to view the diode strip.
There are twenty diodes 3.5 mm square, giving 250 lumens. Diode area is 245 sq mm. Diode luminance is one lumen per sq mm, one million lux.
See etched back face of the thick acrylic diverter of edge lighting. The etching and a reflective top covering raise efficacy, amount unknown, but certainly not 100% transmission as productive light. Claimed 250 lumens/ 3 watts, is a really-good 83 lumens per watt. For this, diodes must put out 100 lumens per watt, or more.
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