Optical gauging apparatus using dual beams and intermittent interruption
US5149952A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 19, 1991 |
| Grant date | Sep 22, 1992 |
| Priority date | — |
| Expiry date | Jul 19, 2011 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60G2500/30
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Here is disclosed an optical gauging apparatus utilizing light reflected on an object to be gauged and being useful for gauging of, for example, car level, spring deflection and photographic distance. Light emitted from a single light source is split into a pair of light components propagated along a pair of optical paths, respectively, the light components thus split are projected along different optical path lengths onto the object, at least one of the light components is intermittently shielded and the light components reflected on the object are photoelectrically converted to the corresponding photoelectric conversion signals which are then time-division processed so as to provide a desired gauging information.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.