Optical encoder system
US10317254B2 · kind B2 · utility
0Cited by
11References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 18, 2015 |
| Grant date | Jun 11, 2019 |
| Priority date | — |
| Expiry date | Mar 20, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D5/34715
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Optical encoding systems include a generalized cylindrical code scale having one or more regions with different light reflective properties. In an example process, a code scale can be created by coating an elongated generalized cylinder with one or more different layers of materials having different light reflective properties. Portions of these layers can be removed selectively in order to expose a particular overlying material and create a particular pattern of features having different optical characteristics (e.g., absorbing, specularly reflecting, diffusely reflecting).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.