Invention Grant
- Patent Title: Virtual image display apparatus and optical unit
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Application No.: US17217116Application Date: 2021-03-30
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Publication No.: US11550155B2Publication Date: 2023-01-10
- Inventor: Daiki Matsumoto , Masatoshi Yonekubo , Takashi Takeda
- Applicant: SEIKO EPSON CORPORATION
- Applicant Address: JP Tokyo
- Assignee: SEIKO EPSON CORPORATION
- Current Assignee: SEIKO EPSON CORPORATION
- Current Assignee Address: JP Tokyo
- Agency: Oliff PLC
- Priority: JPJP2020-062279 20200331
- Main IPC: G02B27/01
- IPC: G02B27/01 ; H04N9/31 ; G02B26/08

Abstract:
A virtual image display apparatus includes an image light generation device, a projection optical system configured to project image light emitted from the image light generation device, a folding mirror configured to reflect the image light from the projection optical system in an intersection direction, a semi-transmissive mirror configured to reflect a part of the image light from the folding mirror, and a concave mirror configured to reflect the image light from the semi-transmissive mirror forming an exit pupil, in which the folding mirror is disposed between the semi-transmissive mirror and the concave mirror when viewed in a first direction, provided that the first direction is a direction from an intersection point between a projection optical axis that is an optical axis of the projection optical system and the folding mirror toward an emission optical axis that is an optical axis from the concave mirror toward the exit pupil.
Public/Granted literature
- US20210302741A1 VIRTUAL IMAGE DISPLAY APPARATUS AND OPTICAL UNIT Public/Granted day:2021-09-30
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