US 12,345,889 B2
Virtual image display device
Mitsutaka Ide, Shiojiri (JP)
Assigned to SEIKO EPSON CORPORATION, Tokyo (JP)
Filed by SEIKO EPSON CORPORATION, Tokyo (JP)
Filed on Jul. 29, 2022, as Appl. No. 17/876,729.
Claims priority of application No. 2021-125110 (JP), filed on Jul. 30, 2021.
Prior Publication US 2023/0031714 A1, Feb. 2, 2023
Int. Cl. G02B 27/01 (2006.01); G02B 27/09 (2006.01)
CPC G02B 27/0172 (2013.01) [G02B 27/0972 (2013.01); G02B 27/0983 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A virtual image display device comprising:
an image light generating unit that generates an image light;
an optical member on which the image light from the image light generating unit is incident;
a first mirror that reflects the image light from the optical member;
a second mirror that reflects the image light reflected by the first mirror; and
a third mirror configured to reflects, toward a position of an exit pupil, the image light being reflected by the second mirror, wherein
the optical member includes a first incident region and a second incident region on which the image light from the image light generating unit is incident,
a distance from the first incident region to the image light generating unit is greater than a distance from the second incident region to the image light generating unit,
the first mirror is located below the optical member and the second mirror with respect to a position of the exit pupil, and
the first mirror reflects the image light projected from the optical member to the second mirror located above the exit pupil.