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

[Mustafa Umut Sarac]

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

 

[Dan Fromm]

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

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.

 

[Mustafa Umut Sarac]

Or just ask the Hodja's donkey.

I cant find a better donkey than you ! Idiot !

 

[Dan Fromm]

I cant find a better donkey than you ! Idiot !

Tsk, tsk, tsk. Who posts in a public forum must expect responses that don't please.

And who knows? Perhaps the donkey has learned to speak.

 

[Jim Jones]

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]

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.