DIY Lens with Dichromated gelatin or photopolymer relief after exposing with mask

Discussion in 'Camera Building, Repairs & Modification' started by Mustafa Umut Sarac, Apr 11, 2013.

  1. Mustafa Umut Sarac

    Mustafa Umut Sarac Member

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    I read that chinese scientists defends to produce micro lenses with exposing dichromated gelatin and make an positive or negative element .

    What could be the limit at thickness , relief height or depth and total diameter ?

    Its possible to produce free form and non spherical ones also and as Hexavalent reported , it would be possible to add alum and make hard rock pieces.

    This is very interesting because wide angle domes or cylindrical lenses are veryt possible to be produced.

    I am thinking loud , we can pour gelatin to glass box and expose from two sides

    I need to know the dimensional limits of these parts as I asked above.

    I think photopolymers could use a mask than appear a relief and clean with a solvent.

    I think acrylics are very suitable to uv exposure and a photomask

    Mustafa Umut Sarac
    Istanbul
     
  2. bernard_L

    bernard_L Subscriber

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    Microlens arrays are commonly made by photolithographic techniques. Please keep us informed of the results of your experiments.