Title:
OPTICAL DEVICE
Document Type and Number:
Japanese Patent JP2019219597
Kind Code:
A
Abstract:
To enable fast focusing without requiring an image sensor suitable for a lens.SOLUTION: An optical device of the present invention comprises: a lens having defined thereon a plurality of lens regions corresponding to distance to an object to be focused on; and a limiting member configured to allow only the rays passing through one of the plurality of lens regions to reach an image sensor, the limiting member capable of changing the lens region for the rays entering the image sensor to pass through.SELECTED DRAWING: Figure 1
Inventors:
SATO MAMORU
Application Number:
JP2018118498A
Publication Date:
December 26, 2019
Filing Date:
June 22, 2018
Export Citation:
Assignee:
CANON KK
International Classes:
G03B17/02; G02B7/16; G03B7/095; G03B9/08; G03B17/17; H04N5/225; H04N5/232
Attorney, Agent or Firm:
Takayoshi Kokubun