Anamorphic lens
US10969568B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 26, 2020 |
| Grant date | Apr 6, 2021 |
| Priority date | — |
| Expiry date | Aug 26, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B13/06
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An ultra-wide-angle large-aperture anamorphic lens includes a cylindrical lens group and a spherical lens group arranged in sequence from the object side to the image side. The cylindrical lens group includes a first lens, a second lens, the third lens and the fourth lens. The first lens and the second lens are negative refractive power cylindrical lenses, and the third lens and the fourth lens are positive refractive power cylindrical lenses. The spherical lens group includes a fifth lens, a sixth lens, . . . , a thirteenth lens that are sequentially arranged along the direction that the optical path points to the image side. A 2.4:1 widescreen video or photo may be obtained; at the same time, because the anamorphic lens is a front anamorphic design, in addition to the anamorphic function, it will also have optical characteristics such as elliptical out-of-focus flare and sci-fi line flare.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.