Distance measuring apparatus
US4601574A · kind A · utility
17Cited by
8References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 1, 1985 |
| Grant date | Jul 22, 1986 |
| Priority date | — |
| Expiry date | Apr 1, 2005 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C3/10
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A distance measuring apparatus for automatically measuring a distance from a reference point to a subject of interest, such as a subject to be photographed, is provided. The present apparatus includes a position sensitive detector having a photoelectric surface defined between two extreme points. Thus, when a light pulse emitted from the apparatus is reflected by the subject and impinges upon the photoelectric surrface, there is produced a pair of current signals, which are then processed to obtain a distance signal indicating the distance to be measured. Thus, the present apparatus can provide a highly accurate measurement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.