Scanning optical system and scanning device
US9625694B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 16, 2016 |
| Grant date | Apr 18, 2017 |
| Priority date | — |
| Expiry date | May 16, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B27/283
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
For achieving an expanded observation range without sacrificing resolution, a scanning optical system according to the present invention includes a scanner that deflects laser light from a light source while changing a deflection angle of the laser light; a polarization beam splitter that is capable of splitting-off the laser light from an optical path of the laser light deflected by the scanner; a polarization beam splitter that is disposed between the light source and the scanner and that causes the laser light split-off by the polarization beam splitter to travel toward the scanner; and a first relay optical system that has 1× relay magnifying power and that is disposed between the polarization beam splitter and the polarization beam splitter. The first relay optical system relays the laser light split-off by the polarization beam splitter so as to cause the laser light to be incident again on the scanner at the same position as an incident position of the laser light from the light source via the polarization beam splitter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.