Imaging system
US4728185A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 20, 1987 |
| Grant date | Mar 1, 1988 |
| Priority date | — |
| Expiry date | Feb 20, 2007 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/036
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Optical systems for imaging activated pixels of a linear cantilever beam light valve (14) on a receptor or screen (24) are disclosed. The systems include a light source (12), a condenser lens (16) and pupil mask (26) forming a beam (32) from the output of the light source (12), a relay lens (18) for the beam (32) to image the pupil mask (26) onto the linear cantilever beam light valve (14), and an imaging lens (22) with an optional iris diaphragm (50) for imaging the portion of the beam (32) reflected from activated pixels of the light valve (14) onto the receptor or screen (24) while blocking the portion of the beam (32) reflected or diffracted from the remainder of the light valve (14).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.