Apparatus with focus detection means and sight axis detection means
US5497210A · kind A · utility
2Cited by
7References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 15, 1994 |
| Grant date | Mar 5, 1996 |
| Priority date | — |
| Expiry date | Dec 15, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B2213/025
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Apparatus with focus detection circuitry and sight axis detection circuitry includes multi-point focus state detection circuitry for detecting focus states of an objective lens for a plurality of areas in a field of view. Sight point detection circuitry is provided for detecting a sight point state (e.g., visual axis) of an observer. Control circuitry is provided for executing, in parallel, a detection operation of the multi-point focus state detection circuitry and a detection operation of the sight point detection circuitry.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.