Visible light and near infrared imaging device
US4242706A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 13, 1978 |
| Grant date | Dec 30, 1980 |
| Priority date | — |
| Expiry date | Nov 13, 1998 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/779
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A visible light and near infrared imaging device is disclosed. The imaging device comprises X-Y addressing means, an array of opto-electronic semiconductor elements or cells, a multiplexer, a precharge switch, and an amplifier. The X-Y addressing means selectively addresses each cell of the array of opto-electronic semiconductor cells and corresponding multiplexer switch for connecting a reference voltage to each cell to charge each element to the reference voltage, then to isolate each element and vary its voltage in proportion to the intensity of the impinging light, and finally to read out selectively the voltage of each element to the amplifier for amplifying the electrical signals representative of the light intensity to a working level for processing into video signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.