Optical encoder and method of operating the same
US11300403B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 28, 2017 |
| Grant date | Apr 12, 2022 |
| Priority date | — |
| Expiry date | Apr 8, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D5/3473
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A coding disc having a first surface and a second surface opposite to the first surface is provided. The coding disc includes a first aperture and a second aperture. The first aperture penetrates the coding disc from the first surface of the coding disc to the second surface of the coding disc. The first aperture has a first width. The second aperture penetrates the coding disc from the first surface of the coding disc to the second surface of the coding disc. The second aperture has a second width. The second width of the second aperture is different from the first width of the first aperture.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.