Telecentric optical lens
US9897787B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 17, 2014 |
| Grant date | Feb 20, 2018 |
| Priority date | — |
| Expiry date | Sep 17, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B9/62
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A telecentric optical lens (100), comprising a first lens (L1) to a fifth lens (L5) arranged sequentially and co-axially along the direction of transmission of the incident light ray; the first lens (L1) is a plano-concave negative lens; the second lens (L2) is a meniscus negative lens; the third lens (L3) is a meniscus negative lens; the fourth lens (L4) is a biconvex positive lens; and the fifth lens (L5) is a plano-concave negative lens; the arrangement and design parameters of the first lens (L1) to the fifth lens (L5) of the telecentric optical lens (100) allow said telecentric optical lens (100) to achieve a telecentric effect, and simultaneously satisfy achromatic and relatively large aperture requirements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.