Optical operation apparatus for effecting parallel signal processing by detecting light transmitted through a filter in the form of a matrix
US4815027A · kind A · utility
37Cited by
7References
31Claims
0Family size
Assignee
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Key dates
| Filing date | Sep 23, 1987 |
| Grant date | Mar 21, 1989 |
| Priority date | — |
| Expiry date | Sep 23, 2007 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/6016
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In an optical operation apparatus, a light source emits a light intensity-modulated on the basis of a first electrical signal. A modulating device receives the light from the light source and intensity-modulates the light on the basis of the first signal, and a photoelectric converting device converts the light modulated by the modulating device into a second electrical signal. These functions are carried out by any of a number of different arrangements of filter elements, and electro-optical or acoustico-optical devices can be used for intensity modulation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.