Patent ID: 9442348
Filing Date: 2016-09-13
CPC Classification: G03B,H04N

Claim Text:
1. An imaging device comprising: an imaging optical system; an image pickup element arranged opposite to the imaging optical system, the image pickup element being configured to perform photoelectric conversion on an optical image formed by the imaging optical system; a magnetic field generation source that generates a magnetic field when receiving an electric current supplied; and an annular magnetic member arranged between the magnetic field generation source and the image pickup element, the annular magnetic member having an opening through which light directed from the imaging optical system toward the image pickup element passes, wherein the annular magnetic member includes a first magnetic body and a second magnetic body, the second magnetic body being made of a ferromagnetic material having higher relative permeability than relative permeability of the first magnetic body, the second magnetic body having a smaller area than an area of the first magnetic body when seen in an optical axis direction of the imaging optical system, and a region in which the second magnetic body is arranged includes a region nearest to the magnetic field generation source of the annular magnetic member.