Process for producing light control plate
US5164223A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Sep 27, 1991 |
| Grant date | Nov 17, 1992 |
| Priority date | — |
| Expiry date | Sep 27, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2433/00
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A process for producing a light control plate which selectively scatters incident light of a specific angle, which comprises: PA1 (1) bringing at least one photopolymerizable compound of a photopolymerizable monomer and a photopolymerizable oligomer into contact with a transparent plastic film or sheet, each of the monomer and the oligomer having a polymerizable carbon-carbon double bond and being capable of forming a polymer having a refractive index different from a refractive index of said transparent plastic film or sheet, to allow said photopolymerizable compound to infiltrate into said transparent film or sheet through a surface of said transparent film or sheet, thereby forming a swollen surface layer, and PA1 (2) irradiating the swollen surface layer with light from a linear light source at a predetermined angle to cure said swollen surface surface layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.