Optical imaging system
US11768353B2 · kind B2 · utility
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18Claims
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Key dates
| Filing date | Sep 21, 2020 |
| Grant date | Sep 26, 2023 |
| Priority date | — |
| Expiry date | Nov 23, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B9/34
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical imaging system includes an optical lens group including, sequentially along an optical axis from an object side to an image side, a first lens, a second lens, a third lens, and a fourth lens; a lens barrel, the optical lens group is accommodated in the lens barrel; and a plurality of spacers including at least two spacers disposed between the third lens and the fourth lens; the diameter D of the lens barrel at an end towards the object side and a maximum effective radius DT11 of an object-side surface of the first lens satisfy 2×DT11/D≥0.5.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.