Control on Refractive Index of Liquid between Two Cylinder Lenses for Correction

Mustafa Umut Sarac

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Joined
Oct 29, 2006
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İstanbul
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I am still thinking for better DIY lenses made with less controlled parts.
I selected cut lenses from cylinder acrylic tubes and filling between elements with high or lower index water iodide mixes.

How much does liquid element contribute the quality of final design ?

Anyone can prepare an high , very highy or moderate index mixes from above material .

I want to get your opinion ,

Thank you,

Mustafa Umut Sarac
Istanbul
 
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Dan Fromm

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Mar 23, 2005
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Get a ray tracing program, measure the plastic's index of refraction, radii, and so on, and ask the program what it thinks. Or just ask the Hodja's donkey.
 

Jim Jones

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Jan 16, 2006
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Chillicothe MO
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Is there a need in photography for highly corrected cylinder lenses other than anamorphic panoramic adapters? For that purpose, improvised optics are unlikely to be good enough. The acrylic tubes would have a circular contour, not the parabolic contour more likely needed for image forming. Also, the acrylic tubing may deform.
 

Xmas

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Sep 4, 2006
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UK
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35mm RF
In normal lenses the radia are held the same within production tolerance or optically flat and the filler is close to (intermediate between) glass refractive indicies to minimise reflections and a compound to passivate both glasses.

Cemented elements are expensive to manufacture.

The filler can include a dye to keep the lens neutral.
 
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