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At least, that's what Steve told me and anyone else reading. As it happens, you don't need that much but movement of axicon along axis is crucial, as is pitch and yaw of each laser. Height of laser relative to axicon tip is the one that Steve mentioned, that we don't really need so much.
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respectfully disagree.
You need "Z" so the beam fits on the scanners locally, that determines the parallelism coming out of the projector. even if its a few pieces of .001 plastic shim stock.
You can't assume , at the price PL members are willing to pay for one of these, that the glass shop will do all these so they pass the autocollimator angle tests in a optics lab. Once they are cloned by low cost sources, the angles will be all over the place.
As for protecting the diodes, 1/4 wave plastic waveplate is cheap and 85% or more transparent. physical masks are even cheaper.
Chad, just so you know, my supplier is out of .50" pyrex, so I sent Mecheng .375" from my old glassblowing stock.
OH, and the diode cases have to be floating from a electrical point of view. Otherwise we're looking at a very special driver circuit,
PS< that solidworks is drop dead magnificent georgeous!
PS, PS, anybody here ever use a GRIN collimator?
Steve
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