I'm interested!Quote:
Originally Posted by VDX
Allthough I believe most of the cost is focusing back on the fibers to get a proper beam out right?
*input and Output coupler
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I'm interested!Quote:
Originally Posted by VDX
Allthough I believe most of the cost is focusing back on the fibers to get a proper beam out right?
*input and Output coupler
... I'll try to make some images of a diode, some pieces of fibers with different diameters (and cleaved ends) and a lens, to get the feeling for the 'simplest beam setup'.
Here some images of a test with a 0.1mm-fiber and the resulting output without lens and with a single collimating/focussing lens in roughly 1m distance, I've done some time ago ...
Attachment 49981
Attachment 49980
Attachment 49979
Attachment 49978
Viktor
This is quite nice. It would be an interesting alternative to a pinhole as you could just shoot a beam over a short fiber and also gives the ability to re-orientate modules in any way you'd like in a projector without having to use bounce mirrors. Trade off is some power at the cost of a pretty nice round beam.
... here a "short'n dirty" setup made with a 445nm-laserdiode without collimator, a 280mm long piece of a 1mm glass-fiber (with coarse broken ends, not polished) and a random found lens.
- the three parts:
Attachment 49988
- far-field of the diode without lens:
Attachment 49989
- fiber attached to the output-window of the laserdiode:
Attachment 49982
- output only with fiber:
Attachment 49983
- lens in 50mm distance to the fiber end:
Attachment 49984
- lens in 20mm distance:
Attachment 49985
- lens in 5mm distance (collimated beam):
Attachment 49986
- lens in 1mm distance:
Attachment 49987
... with polished ends the emitted shape would be a perfect circle ...
Viktor
forget the laser and use a lightbulb or bright led. Then focus that. IE a mini pinspot
http://www.amazon.com/Chauvet-LED-Pi.../dp/B003N7BCFE