Optical position measuring apparatus
US4782239A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 1, 1986 |
| Grant date | Nov 1, 1988 |
| Priority date | — |
| Expiry date | Apr 1, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S17/46
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Apparatus for measuring the distance to an object comprising projection means for projecting a radiation beam onto the object including a radiation generating means and a first optical system, and detection means for detecting the radiation beam reflected from the object including radiation detecting means having a radiation-receiving surface for detecting the intensity distribution of the radiation on said radiation-receiving surface and a second optical system for guiding at least a portion of the reflected radiation beam from the object to said radiation-receiving surface, an optically conjugated relation being held between said radiation-receiving surface and an area of the optical axis of the first optical system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.