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Thread: "Steinheil München f=725mm Quarz" Lens ... any info?

  1. #1

    "Steinheil München f=725mm Quarz" Lens ... any info?

    Group,

    I found a lens (actually several of them with slightly different focal length) which is marked "Steinheil München f=725mm Quarz" and it indeed seems to to made of Quartz (Quarz is same in German).

    It looks quite similar to this one I found years ago:


    Any idea what this could have been used for? I read in a book about Steinheil that they made Quartz lenses from natural Quartz found in the Alpes and later Brazil.
    Klaus

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

  2. #2

    Join Date
    Jul 1998
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    Lund, Sweden
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    Re: "Steinheil München f=725mm Quarz" Lens ... any info?

    I have seen older quartz lenses made to focus light from infinity onto the entrance slit of a spectroscope. Old visible light models usually have an air-spaced achromat (they have similar design principles to telescope objecives) but the quartz ones I saw were singlets.

  3. #3
    the Docter is in Arne Croell's Avatar
    Join Date
    Dec 1997
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    Huntsville, AL
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    1,210

    Re: "Steinheil München f=725mm Quarz" Lens ... any info?

    One of Steinheil's core businesses was the production of spectrographs, for many,many years. I would speculate these lenses came from some of those instruments because of their transmission in the UV. More information can be found in this book:
    http://www.lindemanns.de/4DCGI/10453...Anzeige/354683
    I have it, but its back in Germany and I am in the US for 4 more weeks, so I can't check on it now.

  4. #4

    Re: "Steinheil München f=725mm Quarz" Lens ... any info?

    I have that book also Arne, but unfortunately these lenses are not mentioned.

    Struan, I would have assumed that also, but these seem to consist of two individual lenses.

    Thanks, Klaus
    Klaus

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

  5. #5

    Join Date
    Jun 2005
    Location
    Denmark
    Posts
    239

    Re: "Steinheil München f=725mm Quarz" Lens ... any info?

    Impresive "Jugend Still" letters on the lens.

    Do anybody have a Steinheil numbers list with production dates ?

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