Distance measuring device
US5060003A · kind A · utility
4Cited by
3References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 27, 1990 |
| Grant date | Oct 22, 1991 |
| Priority date | — |
| Expiry date | Jun 27, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B7/32
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A distance measuring device is provided with a plurality of comparators which are respectively connected to a plurality of light receiving elements for receiving light reflected from a subject. The plurality of comparators detect the levels of output signals of the light receiving elements. The comparators are supplied with reference voltages to be used for comparison with the output signals, the reference voltages being set diffrerent for each comparator according to the distance from which the respective light receiving element receives light.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.