Title:
OPTICAL SYSTEM AND OBSERVATION DEVICE HAVING THE SAME
Document Type and Number:
Japanese Patent JP2023086613
Kind Code:
A
Abstract:
To provide an optical system that is thin and compact while having a wide viewing angle and high optical performance, and an observation device having the same.SOLUTION: An optical system forms an enlarged image of a display surface of an image display element, and the optical system has a first semi-transmissive reflection surface and a second semi-transmissive reflection surface that are arranged in order from the side of an exit pupil to the side of the display surface. The optical system includes a first optical path in which light from the display surface transmits through the second semi-transmissive reflection surface, is reflected on the first semi-transmissive reflection surface, is reflected on the second semi-transmissive reflection surface, transmits the first semi-transmissive reflection surface, and is guided to the exit pupil, and a second optical path in which light from the side of the exit pupil transmits the first semi-transmissive reflection surface, transmits the second semi-transmissive reflection surface, and is guided to an image pickup device.SELECTED DRAWING: Figure 1
Inventors:
TASHIRO YOSHIHISA
INOGUCHI KAZUTAKA
INOGUCHI KAZUTAKA
Application Number:
JP2021201273A
Publication Date:
June 22, 2023
Filing Date:
December 10, 2021
Export Citation:
Assignee:
CANON KK
International Classes:
G02B17/08; G02B25/00
Attorney, Agent or Firm:
Ryosuke Fujimoto
Atsuya Mizumoto
Tomoya Hirayama
Atsuya Mizumoto
Tomoya Hirayama
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