Step 11Power On
Stand back, plug it in and flip the switch! Mine worked on first try, of course, and so should yours!
Shine your new light on a blank area at a good working focal distance. Final tune the LEDs individually to work out dark spots etc. The main pix shows mine before and after tuning the LEDs.
You will notice how it seems there is less light output than the florescent lamp. This is because the LEDs are focused through the gel head that directs the light specifically to your working area rather than everywhere else. That is exactly what we desire in a magnifier lamp.
So it does really work. Lets compare.
Philips Circline 8 inch General Purpose
Color = Cool-White Light
Color Temperature = 4100K
Dispersion Pattern = 360 degrees
Expected Life = 10,000 (4 years based on 6 hour days)
Energy Used = 22 watts
Light Output = 1050 lumens
LED Replacement Light, Instuctables Project
Color = a Cool White Light
Color Temperature = 7000K
Dispersion Pattern = 12 degrees
Expected Life = 1000,000 hours
Energy Used = about 4.2 watts
Light Output =
610 lux at 16 inches
1340 lux at 12 inches
1900 lux at 10 inches
2700 lux at 8 inches
2270 lux at 6 inches
940 lux at 4 inches
Ok, so I will not bother to go into all the difficult mathematical details about this (I'd have to understand them first). Basically lumens stated on the flourescent light are dispersed everywhere while the LEDs have a narrow light beam so a comparison is difficult. The lux measurements above were taken with an LX1010B Digital Lux Meter. As a comparison my bench-top measures 490 lux and is illuminated by 2x 48 inch 40 watt florescent tubes suspended 5 feet above.
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The light output of the lamp is very dependant on the LEDs being tweeked for minimal dark spots.
I still use the lamp for magnified viewing of smal things. Like reading part numbers on small components, too small of writing on labels, color codes on small resisiters and surface mount components.