Camera with a line-of-sight detecting device
US5640610A · kind A · utility
3Cited by
8References
33Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 13, 1994 |
| Grant date | Jun 17, 1997 |
| Priority date | — |
| Expiry date | Jun 13, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B2213/025
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A camera with a line-of-sight detecting device, having a light source illuminating an eye of a photographer with light; a conversion device converting reflected light from the illuminated eye to an output corresponding to the intensity of the reflected light; and an eye gazing point determination system identifying an eye-gazing point of the photographer when an output difference or an output ratio between a peak output and a background output of the conversion device is greater than a predetermined value and when the magnitude of a peak output from the conversion device is within a predetermined range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.