Optical displacement sensor
US4443107A · kind A · utility
12Cited by
4References
6Claims
0Family size
Inventors
Key dates
| Filing date | Aug 3, 1981 |
| Grant date | Apr 17, 1984 |
| Priority date | — |
| Expiry date | Aug 3, 2001 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D5/266
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A device and method for accurately sensing the direction and magnitude of small displacements between two objects, independent of the distance between the objects, utilizing a monochromatic light source and a reflector to produce a light standing wave pattern and a transparent photosensitive detector to detect the number of crests and/or nodes of the light standing wave pattern intercepted.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.