Accumulation control apparatus for photoelectric conversion element and visual axis detection apparatus using the element
US5541400A · kind A · utility
19Cited by
8References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 28, 1993 |
| Grant date | Jul 30, 1996 |
| Priority date | — |
| Expiry date | Oct 28, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/672
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An apparatus includes a photoelectric conversion device having a plurality of photoelectric conversion elements for converting light to photoelectric conversion signals and for transferring the photoelectric conversion signals to adjacent photoelectric conversion elements. The apparatus also includes a transfer speed changing device for changing a transfer speed during a period of an accumulation operation of the photoelectric conversion device, making it possible to measure the luminance of an eye exactly in a short period of time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.