Title:
OPTICAL SYSTEM, ACCESSORY DEVICE HAVING THE SAME, AND IMAGE CAPTURING DEVICE
Document Type and Number:
Japanese Patent JP2020071327
Kind Code:
A
Abstract:
To provide an optical system capable of suppressing generation of ghost by stray light reflected from multiple filters, and to provide an accessory device having the same, and an image capturing device.SOLUTION: An optical system provided herein comprises a second optical unit CL disposed on the object side of a first optical unit having a plurality of lenses LA, each being configured to form an object image, and a plurality of filters FA respectively arranged on optical axes of the plurality of lenses LA, the second optical unit having a common optical surface for the first optical unit, where an angle θ1 between the normal of the optical surface and an optical axis of the second optical unit CL is appropriately set.SELECTED DRAWING: Figure 1
Inventors:
NAKAMURA TASUKU
Application Number:
JP2018204486A
Publication Date:
May 07, 2020
Filing Date:
October 30, 2018
Export Citation:
Assignee:
CANON KK
International Classes:
G02B13/00; G02B7/02; G03B11/00; G03B17/14; H04N5/225
Attorney, Agent or Firm:
Takuma Abe
Sogo Kuroiwa
Sogo Kuroiwa