US 12,222,505 B2
Optical module and head-mounted display apparatus
Tokito Yamaguchi, Azumino (JP)
Assigned to SEIKO EPSON CORPORATION, Tokyo (JP)
Filed by SEIKO EPSON CORPORATION, Tokyo (JP)
Filed on Feb. 25, 2022, as Appl. No. 17/680,492.
Claims priority of application No. 2021-029690 (JP), filed on Feb. 26, 2021.
Prior Publication US 2022/0276492 A1, Sep. 1, 2022
Int. Cl. G02B 5/04 (2006.01); G02B 27/01 (2006.01)
CPC G02B 27/0172 (2013.01) [G02B 5/04 (2013.01); G02B 2027/0132 (2013.01); G02B 2027/0178 (2013.01)] 15 Claims
OG exemplary drawing
 
1. An optical module comprising:
an image element that emits an image light;
a first reflection member that includes:
an incident portion on which the image light is incident,
an emission portion that emits the image light, and
a reflection portion that reflects the image light from the incident portion toward the emission portion;
a second reflection member that reflects the image light from the first reflection member toward a pupil position;
a rear optical member disposed between the first reflection member and the second reflection member in the optical path of the image light;
a front optical member disposed between the image element and the first reflection member in the optical path of the image light; and
a supporting member that is disposed between the first reflection member and the second reflection member in an optical path of the image light, wherein the supporting member includes:
a first limiting portion,
a second limiting portion facing the first limiting portion in a first direction,
a pair of first positioning portions contacts with the first reflection member in a second direction intersecting the first direction, and
a second positioning portion contacts with the first reflection member in a third direction perpendicular to the first direction and intersecting the second direction,
the supporting member supports the rear optical member on an opposite side, in the second direction, from the first reflection member,
a distance between the first reflection member and the front optical member is shorter than a distance between the first reflection member and the rear optical member, and
the first reflection member includes, on each of one side and the other side in the first direction,
a third positioning surface brought into contact with the front optical member, and
a fourth positioning surface that is brought into contact with the front optical member and that is different from the third positioning surface.