2 aspheric lenses question
- Thread starter las3r
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2xTrinity
Flashlight Enthusiast
I'd like to build a double aspheric thrower that's like a laser
My question is what kind of lens should I look for or where can I find a set ?
What do you mean by "double"?
Do you mean two separate identical emitters each with their own lens, or two lenses placed one in front of the other?
In either case your divergence will be limited by two things:
the size of your LED emitter (smaller is better)
The size of your lens (bigger is better)
I can give a more specific answer if you clarify what you want to do.
AnAppleSnail
Flashlight Enthusiast
Try shining your aspheric light through a magnifying glass to get 'laser throw.'
Edit: It will not work very well. The optical laws allow a complex aspheric to replace multiple lens elements, but do not necessarily give higher lux for more lenses. The first aspheric lens will act as a larger light source for the second lens, decreasing lux. You want to project a teensy light source, not a bigger lens.
Edit: It will not work very well. The optical laws allow a complex aspheric to replace multiple lens elements, but do not necessarily give higher lux for more lenses. The first aspheric lens will act as a larger light source for the second lens, decreasing lux. You want to project a teensy light source, not a bigger lens.
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