Invention Grant
- Patent Title: Virtual image display apparatus
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Application No.: US16375934Application Date: 2019-04-05
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Publication No.: US10942431B2Publication Date: 2021-03-09
- Inventor: Akira Komatsu , Masayuki Takagi , Toshiaki Miyao , Takashi Takeda , Tokito Yamaguchi
- 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: JPJP2018-073667 20180406
- Main IPC: G03B21/20
- IPC: G03B21/20 ; G02B5/02 ; G06F3/01 ; G06K9/00

Abstract:
Provided is a virtual image display apparatus including a laser light source, a scanner configured to scan light from the laser light source and render an intermediate image, a diffusion element arranged at a position of the intermediate image formed by the scanner, and an exit pupil forming unit configured to cause light that has passed through the diffusion element to be incident on a position of an exit pupil. The diffusion element separates the light from the scanner into first emission light used as a reference, and second emission light having a separation angle greater than a capturing angle corresponding to an inclination of light toward a predetermined pupil radius relative to the first emission light at an emission position of the light from the diffusion element, and then emits the first emission light and the second emission light.
Public/Granted literature
- US20190310543A1 VIRTUAL IMAGE DISPLAY APPARATUS Public/Granted day:2019-10-10
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