Low total track length lens assembly including seven lenses of +−+−++− refractive powers for large sensor format
US12222473B2 · kind B2 · utility
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18Claims
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Key dates
| Filing date | Apr 25, 2024 |
| Grant date | Feb 11, 2025 |
| Priority date | — |
| Expiry date | Apr 25, 2044 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B13/02
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Lens assemblies comprising from an object side to an image side, seven lens elements numbered L1-L7; an optical window; and an image sensor having a sensor diagonal length (SDL), wherein an exemplary lens assembly has a total track length TTL that includes the optical window an effective focal length EFL and a field of view (FOV), wherein TTL/EFL<1.100, wherein TTL/SDL<0.64, wherein FOV<90 degrees, wherein a normalized thickness standard deviation constant T_STD of at least four of the seven lens elements complies with T_STD<0.035, and wherein a focal length f1 of lens element L1 fulfills f1/EFL<0.95.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.