Large aperture anamorphic lens
US10831002B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 1, 2020 |
| Grant date | Nov 10, 2020 |
| Priority date | — |
| Expiry date | Jun 1, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B13/08
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A large aperture anamorphic lens includes a cylindrical lens group arranged in a direction from an object side to an image side. The cylindrical lens group includes a anamorphic group and together form an imaging group. The anamorphic group includes a first lens, a second lens, and a third lens arranged in a direction of an object side to an image side. The first lens and the second lens may be a negative optical power cylindrical lens, and the third lens may be a positive optical power cylindrical lens. Through the optical characteristics of the cylindrical lens in the anamorphic group, the entering horizontal light is compressed while the vertical light path maintains unchanged. The imaging group comprehensively corrects the light so that the horizontal field of view angle is increased by about 33% to achieve a magnification by 1.33 times for an anamorphic shooting.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.