Patent · US Active

Camera, optical system and interchangeable lens with birefringent device

US9625632B2 · kind B2 · utility

2Cited by

10References

18Claims

0Family size

Assignee

SONY GROUP CORPORATION · JP

Inventors

Christin Weichelt · Esslingen am Neckar, DE
Markus Kamm · Karlsruhe, DE

Key dates

Filing date	Mar 21, 2016
Grant date	Apr 18, 2017
Priority date	—
Expiry date	Mar 21, 2036

Classification

Technology area (CPC G)Physics
CPC primaryG02F1/13439
WIPO fieldOptics
WIPO sectorInstruments

Abstract

An optical system (110) includes a lens unit (112) with a plurality of lenses. An out-of-focus point spread function of the lens unit (112) includes an annular intensity distribution with at least one ring-shaped side peak at a radial distance to a center point. A birefringent device (115) in an optical path of the optical system (110) is adapted to selectively attenuate the ring-shaped side peak in the out-of-focus point spread function of the lens unit (112).

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.