Visual axis detecting apparatus
US6674964B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 21, 2002 |
| Grant date | Jan 6, 2004 |
| Priority date | — |
| Expiry date | Aug 16, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B2213/025
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Disclosed is a visual axis detecting apparatus having: a visual axis detection circuit for detecting a visual axis of an observer; an arithmetic circuit for performing an arithmetic operation of calculating a distributed state of variations of visual axis positions obtained in a plurality of visual axis detections executed by the visual axis detection circuit in a state in which the observer is observing a predetermined point, with respect to the predetermined point; a determination circuit for determining a condition of the visual axis according to the result of detection by the visual axis detection circuit; and a change circuit for changing a determination process of determining the condition of the visual axis by the determination circuit, according to the distributed state of variations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.