Title:
OCULAR OPTICAL SYSTEM, OBSERVATION DEVICE HAVING THE SAME, AND IMAGE CAPTURING DEVICE
Document Type and Number:
Japanese Patent JP2023028995
Kind Code:
A
Abstract:
To provide an ocular optical system which ensures telecentricity and a high zoom ratio.SOLUTION: An ocular optical system L0 provided herein is used to observe an image displayed on an image display element. The ocular optical system L0 comprises a first lens L1 having positive refractive power, a second lens L2 having negative refractive power, and a third lens L3 having positive refractive power arranged in order from the image display element side to the observation side. The ocular optical system L0 satisfies predetermined conditional expressions.SELECTED DRAWING: Figure 1
Inventors:
ISHIDA KAZUTO
Application Number:
JP2021135030A
Publication Date:
March 03, 2023
Filing Date:
August 20, 2021
Export Citation:
Assignee:
CANON KK
International Classes:
G02B25/00; G03B13/06; H04N23/53; H04N23/55
Attorney, Agent or Firm:
Takuma Abe
Sougo Kuroiwa
Sougo Kuroiwa