Visual axis detecting apparatus and method including scanning light source, and image device using same
US6104431A · kind A · utility
32Cited by
8References
53Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 24, 1997 |
| Grant date | Aug 15, 2000 |
| Priority date | — |
| Expiry date | Jun 24, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B2213/025
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A visual axis detecting method and apparatus comprising a device that illuminates an eye of an observer with a scanning light source, a photoelectric conversion device that receives reflection light from the eye of the observer, and an arithmetic device that detects Purkinje images and an iris image or a pupil image of the observer's eye on the basis of an output from the photoelectric conversion device, and that detects a direction of a visual axis of the observer from positions of the detected images.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.