DIY Lens with Dichromated gelatin or photopolymer relief after exposing with mask
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
Microlens arrays are commonly made by photolithographic techniques. Please keep us informed of the results of your experiments.