Optical system, optical apparatus, and method of manufacturing optical system
US11686926B2 · kind B2 · utility
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24Claims
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Key dates
| Filing date | Dec 15, 2017 |
| Grant date | Jun 27, 2023 |
| Priority date | — |
| Expiry date | Aug 29, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B15/143105
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical system (LS) Includes lenses (L22,L23) satisfying the following conditional expressions, νdLZ<35.0, and0.702<θgFLZ+(0.00316×νdLZ), where νdLZ: Abbe number of the lens with reference to d-line, and
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.