Projection device for irradiating a light to a display device and optically magnifying and projecting a reflection light therefrom
US4818074A · kind A · utility
18Cited by
7References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 1, 1987 |
| Grant date | Apr 4, 1989 |
| Priority date | — |
| Expiry date | Sep 1, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133553
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A projection device for irradiating a light to a display device and optically magnifying and projecting a reflection light therefrom includes a liquid crystal cell, a first polarization device and a reflection device disposed respectively on the opposite side from the irradiated side of the liquid crystal cell and a second polarization device and optical magnifying means disposed respectively on an optical path of the reflection light reflected by said reflection device and outgoing from said liquid crystal cell.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.