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High-Resolution Line Scan Lenses - Comparison of results
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Lou Jost



Joined: 04 Sep 2015
Posts: 1800
Location: Ecuador

PostPosted: Tue Nov 21, 2017 11:50 am    Post subject: Reply with quote

Many things about this lens make sense if it came from this mini-stepper. The mini-stepper is designed for coarser but thicker photoresist patterns, so depth of field is important. Hence the low NA, and this also explains the presence of an adjustable aperture.

Also, my rough measurement of the image circle (made before I found this document) was ">50mm" and the expected image circle of the mini-stepper lens is 55mm.
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Lou Jost
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kds315*



Joined: 02 Feb 2009
Posts: 177

PostPosted: Tue Nov 21, 2017 12:09 pm    Post subject: Reply with quote

Lou Jost wrote:
Many things about this lens make sense if it came from this mini-stepper. The mini-stepper is designed for coarser but thicker photoresist patterns, so depth of field is important. Hence the low NA, and this also explains the presence of an adjustable aperture.

Also, my rough measurement of the image circle (made before I found this document) was ">50mm" and the expected image circle of the mini-stepper lens is 55mm.


Well, looking forward to seeing your results!
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Klaus

http://www.macrolenses.de for macro and special lens info
http://www.pbase.com/kds315/uv_photos for UV Images and lens/filter info
http://photographyoftheinvisibleworld.blogspot.com/ my UV diary
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Sager



Joined: 09 Jan 2015
Posts: 38

PostPosted: Thu Nov 23, 2017 7:48 am    Post subject: Reply with quote

Very interested in what you find on the Nikon lens.

I was looking at this, glad to know one went to a good place. I'm interested in the other one if it has a decent IC.

Jonathan
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Lou Jost



Joined: 04 Sep 2015
Posts: 1800
Location: Ecuador

PostPosted: Thu Nov 23, 2017 7:50 am    Post subject: Reply with quote

I can quickly look at the IC later today for you.
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