Optical imaging system
US10877245B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 9, 2018 |
| Grant date | Dec 29, 2020 |
| Priority date | — |
| Expiry date | Sep 20, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B13/02
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical imaging system includes a first lens, a second lens, a third lens, and a fourth lens sequentially disposed from an object side toward an image side on an optical axis, and a reflecting member disposed closer to the object side, as compared to the first lens, and having a reflecting surface configured to change a path of light to be incident to the first to fourth lenses. The first to fourth lenses are disposed to be spaced apart from each other by a preset distance along the optical axis, and 1.3<TTL/BFL<3.5, where TTL is a distance from an object-side surface of the first lens to an imaging plane of an image sensor, and BFL is a distance from an image-side surface of the fourth lens to the imaging plane of the image sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.