Radiation imagery chemistry: process – composition – or product th – Imaging affecting physical property of radiation sensitive... – Light scattering or refractive index image formation
Patent
1988-05-06
1989-03-28
Brammer, Jack P.
Radiation imagery chemistry: process, composition, or product th
Imaging affecting physical property of radiation sensitive...
Light scattering or refractive index image formation
430272, 430325, 430330, G03C 500
Patent
active
048163767
ABSTRACT:
A method for forming an optical pattern involves subjecting a porous glass material impregnated with a photocurable composition to a patterning exposure. The composition remaining uncured in the unexposed portion of the glass material is removed from the glass material to form a pattern composed of a section containing a photocured composition filled in the pores of the glass material. The glass material is directly heated to carbonize the photocured composition present in the glass material, or heated after having been further impregnated with a substance capable of changing an optical characteristic of glass. The photocurable composition may comprise one or more members selected from an acrylic ester, a methacrylic ester, an acrylic ester resin and an epoxy resin, and optionally a photopolymerization initiator.
REFERENCES:
patent: 4173475 (1979-11-01), Chandross et al.
patent: 4187111 (1980-02-01), Chandross et al.
patent: 4488864 (1984-12-01), Borrelli et al.
Brammer Jack P.
Canon Kabushiki Kaisha
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