Optical system, optical apparatus, and method for manufacturing optical system
US12366729B2 · kind B2 · utility
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4References
23Claims
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Key dates
| Filing date | Mar 18, 2020 |
| Grant date | Jul 22, 2025 |
| Priority date | — |
| Expiry date | Jun 4, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B15/22
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical system and an optical apparatus that have favorable imaging performance and a method for manufacturing the optical system are provided. An optical system OL includes, sequentially from an object side, a front group G1 having positive refractive power and a focusing group G2 that performs focusing by moving in an optical axis direction, the front group G1 includes, sequentially from the object side, a first lens L11, a second lens L12, and a third lens L13, and the optical system OL satisfies a condition expressed by an expression below, 0.10<D23/f1<0.75
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.