Germanium Lens Advantage

Discussion in 'Camera Building, Repairs & Modification' started by Mustafa Umut Sarac, May 16, 2010.

  1. Mustafa Umut Sarac

    Mustafa Umut Sarac Member

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    I read at Edmund Scientific that Germanium is refractive index 4.
    This was the highest index material in the list.
    Than I looked to the price lists and 3 element , 3 centimeters diameter lens is 140 dollars.
    Do these lenses make a killer image quality or waste of time ?
    Is there extremelly high abbe number , high ref index doublet or triplet lenses at the market ? May be Schott start to make Lutetium at near future .

    Thank you ,

    Mustafa Umut Sarac

    Istanbul
     
  2. alanrockwood

    alanrockwood Member

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    I think germanium is for infrared imaging only. I don't think it is transparent to visible light.
     
  3. Mustafa Umut Sarac

    Mustafa Umut Sarac Member

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    Thank you.
     
  4. ath

    ath Member

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    correct.