Method of producing light control plate which induces scattering of light at different angles
US5112722A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Apr 10, 1990 |
| Grant date | May 12, 1992 |
| Priority date | — |
| Expiry date | Apr 10, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03F7/0005
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A method of producing a light control plate which induces scattering of light at different angles of incidence for different places. The method comprises (1) preparing an assembly comprising a film of a photo-polymerizable composition and a light-pervious body having a light-impervious pattern arranged along the surface of the film, (2) irradiating light limitedly to the assembly from that side where the light-pervious body at a limited angle while moving the assembly continuously in the planar direction of the film thereby to polymerize at least part of the photopolymerizable film, the light being emitted from a first linear light source whose long axis is positioned in a direction crossing the moving direction of the assembly; and thereafter (3) polymerizing the photopolymerizable composition of that portion of the film-like molded article which is covered with the light-impervious pattern of the light-pervious body by light irradiation or heating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.