Optical arrangement for developing fundamental primary colors
US4264922A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 11, 1980 |
| Grant date | Apr 28, 1981 |
| Priority date | — |
| Expiry date | Feb 11, 2000 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/11
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Apparatus for processing a polychromatic optical beam for display on a color television receiver employs an optical splitter that divides an incident beam into a sub-beam responsive to luminance and into two single-color sub-beams. The splitter employs a beam splitting element, a reflective filter, and an absorbent filter. Converter elements convert the three sub-beams into corresponding electrical signals, and electronic circuits combine them to produce a composite signal having the format of chrominance and of luminance signal components standard for color television display. A consumer product for the home display of motion pictures on a color television receiver advantageously employs the foregoing construction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.