Precision angle sensor
US5110210A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 23, 1990 |
| Grant date | May 5, 1992 |
| Priority date | — |
| Expiry date | Jul 23, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01B11/26
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Optical apparatus for measuring angles to a precision approaching the theoretical optical limit for a fixed aperture. Calculations and measurement of the angle are made on the basis of the displacement of a very detailed waveform on a multi-pixel detector from a known point on the detector. The angle this displacement represents is created by the angular displacement of a dispersive element attached to the object of interest. The beamline comprises an optical source, the dispersive element on the object, and a spectrometer which contains an echelle and the detector. The known point on the detector is established by aligning the beamline to a fiducial angle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.