Method for producing an optical cast body having a holographic optical element, and optical cast body

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United States of America Patent

PATENT NO 11000976
APP PUB NO 20170368723A1
SERIAL NO

15543124

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Abstract

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The invention relates to a process for producing an optical casting comprising at least one volume-holographic optical element by means of at least one casting operation, the process comprising the following steps:

    providing a casting mould comprising a first mould section having a flat, spherical, aspherical or free-form first surface and a second mould section having a flat, spherical, aspherical or free-form second surface, the first mould section being connectable to the second mould section to form the casting mould,providing at least one holographic optical element,positioning and aligning the at least one holographic optical element with respect to the first mould section or/and with respect to the second mould section,combining the first and second mould sections to form the casting mould,introducing casting material in one or more casting steps, the casting material having a maximum viscosity at 25° C. of 100 000 mPas,curing the casting material,removing the cured casting material comprising the at least one holographic optical element from the casting mould, the at least one holographic optical element being at least partly surrounded by the casting material.

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Patent Owner(s)

  • COVESTRO DEUTSCHLAND AG

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Fäcke, Thomas Leverkusen, DE 67 961
Maleika, Robert Düsseldorf, DE 24 87
Orselli, Enrico Cologne, DE 15 31
Stern, Frank-Stefan Bergisch Gladback, DE 8 8

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