Compact optical imaging device with shortened focal length, imaging module, and electronic device
US12292551B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 21, 2022 |
| Grant date | May 6, 2025 |
| Priority date | — |
| Expiry date | Sep 22, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B9/60
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A compact optical imaging device with shortened focal length, for use in an imaging module and an electronic device, comprises first to fifth lenses. An image-side surface of the first lens is concave near an optical axis. An image-side surface of the third lens is concave near the optical axis. The second and fourth lenses have a negative refractive power. The third and fifth lenses have a positive refractive power. The optical imaging device satisfies formulas: 95°/mm<FOV/TL5<105°/mm and 1 mm−1<FNO/TL4<1.5 mm−1, FOV being a maximum field of view of the optical imaging device, TL5 being a distance from an object-side surface of the fifth lens to an image plane of the optical imaging device along the optical axis, FNO being a F-number of the optical imaging device, and TL4 being a distance from an object-side surface of the fourth lens to the image plane along the optical axis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.