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Variable Colour Beam?

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Nov 19, 2010
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An idea I had...Not a laser/physics expert by any means, so bear with me.

Say you have three diodes..Red, green, and blue. If you put each on it's own driver with a externally mounted current control knob...You could theoretically have control over the beam colour. Kinda like this. ..

Not sure how you would refract/collimate the beams into one. Plus it would take a pretty custom monstrosity of a heatsink.

Thoughts on this?
 





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