Light-receiving optical system
US10527489B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 19, 2018 |
| Grant date | Jan 7, 2020 |
| Priority date | — |
| Expiry date | Jun 2, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B26/105
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A light-receiving optical system includes a rotating mirror configured to rotate around a rotation axis and having a reflection plane arranged at an angle with the rotation axis; an imaging optical system having an optical axis that coincides with the rotation axis; a multifocal Fresnel lens having sections formed concentrically around the optical axis; and light-receiving elements, wherein the imaging optical system is configured such that rays of light that enter the rotating mirror are converged onto one of the sections depending on an angle of the rays with the optical axis, and the multifocal Fresnel lens is configured such that the rays reach one of the light-receiving elements, which corresponds to the one of the sections so that a light-receiving element that the rays reach is determined depending on the angle of the rays with the optical axis independently of a rotational position of the rotating mirror.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.