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Old 09-06-2021, 08:54 PM
legswilly (Werner)
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Flatness testing box?

I am interested in testing optical flatness. I did come across a method that used what looks like a red light (monochromatic?) and a plastic diffuser. The globes looked like the energy saver type, but with a red glow. The box had a pane of glass at a 45deg angle. The piece to be tested was at the bottom of the box.
I wish I had it bookmarked. Has anyone seen the clip? Please give me a link to it?
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Old 09-06-2021, 09:01 PM
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Atmos (Colin)
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From memory it was a document provided by Starlight Xpress but I cannot remember any other details.
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Old 09-06-2021, 09:28 PM
legswilly (Werner)
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Quote:
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From memory it was a document provided by Starlight Xpress but I cannot remember any other details.

Thank you for the link. I have contacted them and hope I get an answer.
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Old 10-06-2021, 04:05 PM
legswilly (Werner)
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Quote:
Originally Posted by Atmos View Post
From memory it was a document provided by Starlight Xpress but I cannot remember any other details.

I contacted them and they said it is not one of their articles, but they gave me a link https://www.grattavetro.it/interfero...ewton/?lang=en and that shows the same test rig, bar the light source. I will be able to scale this to what I need.


Thank you Colin
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