Distance measuring device
US4575211A · kind A · utility
126Cited by
4References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 16, 1984 |
| Grant date | Mar 11, 1986 |
| Priority date | — |
| Expiry date | Apr 16, 2004 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C3/10
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The disclosed distance measuring device is arranged to project light on an object. Reflected light from the object is received by a photo-electric converter to shift the position of a photo-taking lens to an in-focus position on the basis of a signal produced from the photo-electric converter. The projected light and/or the reflected light is divided into a multiplicity of light fluxes for the purpose of broadening and simplifying the distance measuring range and accuracy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.