Glassy oxide network passivation of dichromated gelatin holograms
AssigneeHughes Aircraft Company
InventorEdward T. Knobbe
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Abstract
A passivated dichromated gelatin film in which the film includes a glassy oxide network to provide passivation and structural strengthening. The glassy oxide network is formed simultaneously with the gelatin formation via a sol-gel process.
Claims17
A passivated dichromated gelatin film adapted for use in a hologram, said passivated film comprising a gelatin film impregnated with a sufficient amount of glassy oxide network to provide a passivated dichromated gelatin film having increased structural strength.
In a dichromated gelatin film adapted for use in a hologram, wherein said gelatin film is made from an aqueous solution containing gelatin and dichromate and wherein the improvement comprises forming a passivated gelatin film including a glassy oxide network within said gelatin film, said glassy oxide network being formed by a sol-gel process wherein a sufficient amount of a metal alkoxide is added to said aqueous solution during formation of gelatin layer to form said glassy oxide network.
A method for making a passivated dichromated gelatin film comprising the steps of:
- reacting dichromate, gelatin, catalyst and a metal alkoxide to form an aqueous gelatin solution;
- forming said aqueous gelatin solution into a passivated dichromated gelatin film which includes a glassy oxide network formed by said metal alkoxide.
A method for making a passivated dichromated gelatin film comprising the steps of:
- reacting gelatin, dichromate and a metal alkoxide to form an aqueous gelatin solution;
- and
- forming said aqueous gelatin solution into a passivated dichromated gelatin film which includes a glassy oxide network formed by said metal alkoxide.
Dependencies are inferred from the claim text.