Batur
Newbie level 4
Hi,
I am designing a hand torch, it will have 3 different light sources as : White (6500K), Blue(470nm) and UV (370nm).
My white source is composed of 2 chip leds, blue source: 6 chip leds and UV source: 4 chip leds, all different colors mounted on a MCPCB of its own.
I use the same lens set for all colors, which consists of collimator and focusing lenses.
My problem is this:
The torch was measured using an integrating sphere both with and without lens set. The lens seems to drop my radiant flux output:
From 4W to 0,9W for white light.
From 3W to 0,6W for blue light
From 1,8 to 0,5W for UV.
I had expected some loss due to the lens but not this much. I am an electronics engineer and my optics knowledge is pretty non-existent so I would greatly apreciate if someone can tell me if this ratio is too much due to bad design or normal?
Best Regards
I am designing a hand torch, it will have 3 different light sources as : White (6500K), Blue(470nm) and UV (370nm).
My white source is composed of 2 chip leds, blue source: 6 chip leds and UV source: 4 chip leds, all different colors mounted on a MCPCB of its own.
I use the same lens set for all colors, which consists of collimator and focusing lenses.
My problem is this:
The torch was measured using an integrating sphere both with and without lens set. The lens seems to drop my radiant flux output:
From 4W to 0,9W for white light.
From 3W to 0,6W for blue light
From 1,8 to 0,5W for UV.
I had expected some loss due to the lens but not this much. I am an electronics engineer and my optics knowledge is pretty non-existent so I would greatly apreciate if someone can tell me if this ratio is too much due to bad design or normal?
Best Regards
