For Who wants to fully test lenses - Scientific Paper 1A

Discussion in 'Camera Building, Repairs & Modification' started by Mustafa Umut Sarac, Aug 15, 2011.

  1. Mustafa Umut Sarac

    Mustafa Umut Sarac Member

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    Calculation of Optical Transfer Functions from Optical Design Data
    Splitted PDF 1A
    Download others also .

    If you want to see all aberrations , character of a lens , you have to find transfer function first. This paper tells the story of an example lens and its transfer function calculation.
    Remember , If you need to find the transfer function , you have to know glass refraction index calculation values from the glass catalog. There must be two numbers and calculation, transfers these two values to all refraction indexes of glass for all visible light wavelenghts. Single refraction index value does not work for you.

    Than the other paper comes to mind.Paper X

    It helps to find Zernike aberrations.
    Zernike aberrations is way to design or test the lens.
    There are multiple zernike aberrations and a way to optimize all to merit function.
    Merit function is a final note for optimization software , calculations , all mathematics involved and least the number , better the result.

    Better result can be a desired error mix also for desired look of the lens.

    I want to test with these papers Glatzel , Mandler , Berek , Roosinov lenses.

    MTF graphs and look tells me there is a lot of desired aberrations at Leitz designs and I want to find what is inside.

    There is a heated debate to optimize lenses successfully for 70 years and better designer is the better mathematician and the software code designer.
    Best example is Zeiss, Erhard Glatzel.

    These are all I know.

    Umut
     

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    Last edited by a moderator: Aug 15, 2011
  2. Mustafa Umut Sarac

    Mustafa Umut Sarac Member

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    Paper 1B

    Calculation of Optical Transfer Functions from Optical Design Data
    Splitted PDF 1B


    Download others also
     

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  3. Mustafa Umut Sarac

    Mustafa Umut Sarac Member

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    Paper 1C

    Paper 1C
    Calculation of Optical Transfer Functions from Optical Design Data
    Splitted PDF 1C


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  4. Mustafa Umut Sarac

    Mustafa Umut Sarac Member

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    Paper 1D
    Calculation of Optical Transfer Functions from Optical Design Data
    Splitted PDF 1D


    That is last part of the paper.
    Download others also
     

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  5. Mustafa Umut Sarac

    Mustafa Umut Sarac Member

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    New Paper.

    For use with the help of paper at the top.

    PAPER X
    Detailed description of the ENZ
    approach
    Joseph J.M. Braat, Peter Dirksen, Sven van Haver, Augustus J.E.M. Janssen
     

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  6. paul ron

    paul ron Member

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    Do we need special clearance for this? It looks like classified governement information. :smile:


    .
     
  7. benjiboy

    benjiboy Subscriber

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    I like to leave lens testing to the people who get paid by the manufactures to do it, I use Canon lenses and they are better than my ability, I have enough problems trying to shoot good pictures. :D
     
  8. benjiboy

    benjiboy Subscriber

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    It looks to me as if these documents are classified both in Britain and the USA, although I don't know where Mustafa got them from,I appreciate he has posted them out of scientific interest but it looks to me like he could get himself into a lot of trouble if they haven't been declassified.
     
    Last edited by a moderator: Aug 15, 2011
  9. Mustafa Umut Sarac

    Mustafa Umut Sarac Member

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    Ben ,

    visit www.dtic.mil , there are millions of reports are ready for public use. Have fun , you can learn about optics with these reports spreading in one century. Funny , people were scaring for copyright infringement now , for the spying !

    Umut
     
  10. Mustafa Umut Sarac

    Mustafa Umut Sarac Member

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    As I read the first report again , I discovered abbe number must be calculated for each wavelenght also. There is the termimology at report , extract it from report and find the values from glass catalog.
    One of the hardest thing for a optical designer is to find correct abbe and refraction for each glass and wavelenght from only looking to two numbers for each. There is a new patent from Lockheed Martin which solves this problem. If you look Lockheed Martin Lens words at Google Patents , you find the algorithm.

    Umut
     
  11. georg16nik

    georg16nik Member

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    Umut, a quote from another study..
    *note - the original Russinov's design dates back to the late 30's..

     
  12. Mustafa Umut Sarac

    Mustafa Umut Sarac Member

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    Another detailed patent relates to chromatic aberration correction and selecting the glasses.

    Lockheed Martin , 6950543
     

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  13. Mustafa Umut Sarac

    Mustafa Umut Sarac Member

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    Georg ,

    Optics Research and Industrialization have a long history at Russia , They did not build Russia after WW2 with few german scientists.

    Umut
     
  14. georg16nik

    georg16nik Member

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  15. Mustafa Umut Sarac

    Mustafa Umut Sarac Member

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    Georg ,

    Do you know where can I find Russian Glass Catalogs , Roosinov time.
    Look at google patents , there is a patent from Roosinov from late 50s. I bet your link is that lens.

    Umut
     
  16. Mustafa Umut Sarac

    Mustafa Umut Sarac Member

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    http://glassbank.ifmo.ru/rus/adv_search.php

    This is the only free database on Soviet , Russian , Japanese , German and may be more optical glasses and searchable database.

    Use google translate , English page is not responding.

    Umut
     
  17. georg16nik

    georg16nik Member

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    Yes, the link is for one of the Russar variations.
    As far as I know, Russinov patented it in Russia in the 30's and in US in the 50's.

    G
     
  18. georg16nik

    georg16nik Member

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    Umut, You have PM