Display including a prismatic lens system or a prismatic reflective system
US4726662A · kind A · utility
105Cited by
5References
43Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 24, 1985 |
| Grant date | Feb 23, 1988 |
| Priority date | — |
| Expiry date | Sep 24, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S359/90
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A display comprising means for selectively scattering or transmitting light in response to a prescribed input and a prismatic lens means located on a non-viewing side of said scattering or transmitting means for focusing light onto a light absorbing surface to enhance the contrast of the display. Alternatively, a prismatic reflector means may be utilized to direct light toward a light absorbing surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.