Telecentric optical apparatus
US11467384B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 11, 2019 |
| Grant date | Oct 11, 2022 |
| Priority date | — |
| Expiry date | Jan 4, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B7/021
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A telecentric optical apparatus that is capable of suppressing an increase in the number of components as well as achieving high precision optical axis alignment, is provided. The telecentric optical apparatus of the present invention is characterized in that it is provided with: a first telecentric lens surface that is provided on an object side; a second telecentric lens surface that is provided on an image side and that shares a focus position with the first telecentric lens surface; and an optical path trimming part that is provided, between the first telecentric lens surface and the second telecentric lens surface, in an outside region, which is located on a side further out than a light passing region having a center thereof located at the focus position, and that changes an optical path such that a light beam incident on the outside region is prevented from contributing to image formation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.