Position detector
US4687928A · kind A · utility
3Cited by
2References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 14, 1984 |
| Grant date | Aug 18, 1987 |
| Priority date | — |
| Expiry date | Dec 14, 2004 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D5/34792
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A position detector for use with a code carrier which defines a position and has alternating radiation transmissive and non-transmissive regions which define a multi-bit output is disclosed. The position detector includes a photodetector array mounted on one side of the code carrier and a radiation source mounted on the detector on the side opposite the photodetector array. A radiation guide is interposed between the code carrier and the photodetector array and has a plurality of radiation transmissive paths each of which is in exclusive communication with one photodetector.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.