Re: Alignment of a beam expander
One possible method (although tedious) is to is to first align the lens
as best you can by eye. Then use your camera to look at a focused spot
about 3 meters away on a screen or wall. Adjust the tilts till you get
a nice symmetrical diffraction pattern.
Alternatively, buy a cheap laser pointer and use that to align the
lenses by looking at back reflections.
Please visit my web site at www.richardfisher.com
.
Relevant Pages
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(rec.photo.digital.slr-systems) |
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