Title:
OPTICAL DEVICE
Document Type and Number:
Japanese Patent JP2023091158
Kind Code:
A
Abstract:
To provide an optical device which can adjust the optical amount of each optical system with a simple configuration.SOLUTION: The optical device of the present invention includes: a plurality of optical systems each having a diaphragm; a storage unit for storing plural pieces of information showing the relation between a target opening diameter and a target light amount in the opening diameter regions with different diaphragms of the optical systems; and a control unit for adjusting an optical amount by changing the opening diameter of the diaphragm of each optical system. The control unit determines whether a predetermined target optical amount is included in one of the plural pieces of information when adjusting the optical amount of each optical system to the predetermined target optical amount, and changes the opening diameter of the diaphragm of each optical system to a target opening diameter for the predetermined target optical amount on the basis of the determined information.SELECTED DRAWING: Figure 3
Inventors:
SATO KATSUHIKO
Application Number:
JP2021205741A
Publication Date:
June 30, 2023
Filing Date:
December 20, 2021
Export Citation:
Assignee:
CANON KK
International Classes:
G03B9/02; G03B7/095; G03B35/08; H04N23/55; H04N23/75
Attorney, Agent or Firm:
Okabe
Takao Ochi
Koji Yoshizawa
Aki Honda
Takao Ochi
Koji Yoshizawa
Aki Honda