Optical distance measuring apparatus having semiconductor position sensitive photodetector
US5488468A · kind A · utility
19Cited by
6References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 22, 1992 |
| Grant date | Jan 30, 1996 |
| Priority date | — |
| Expiry date | Dec 22, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S17/46
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A light emitting element and a light receiving element are installed on a wiring board mounted in a housing case. Light emitted from the light emitting element is irradiated on an object to be detected through a first lens installed in the housing case. Light reflected by the object to be detected is received by the light receiving element through a second lens installed in the housing case. The housing case is formed of a grounded conductive material, and the wiring board is formed of a material having a coefficient of linear expansion equivalent to that of the housing case.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.