Light source device and photoelectric encoder including the same
US10416002B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 16, 2017 |
| Grant date | Sep 17, 2019 |
| Priority date | — |
| Expiry date | Apr 7, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D5/34707
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Provided are a light source device that can achieve higher accuracy while maintaining reliability by reducing stray light, and a photoelectric encoder including the same. A light source device 2 includes a translucent member 10 configured to accommodate a light emitting unit 5 thereinside, and to make light emitted from the light emitting unit 5, into parallel light. The translucent member 10 includes an optical axis plane 11, an orthogonal plane 12, a reflection portion configured to make light from the light emitting unit 5, into parallel light, and a connection portion 14 formed by the optical axis plane 11 and the orthogonal plane 12 connecting to each other, and having a curved surface. A central axis AX of the curved surface is in an outside region of the translucent member 10, and a region between the optical axis plane 11 and the orthogonal plane 12.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.