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1. (WO2018198587) OPTICAL DEVICE, IMAGE DISPLAY DEVICE, AND DISPLAY DEVICE

Pub. No.:    WO/2018/198587    International Application No.:    PCT/JP2018/010405
Publication Date: Fri Nov 02 00:59:59 CET 2018 International Filing Date: Sat Mar 17 00:59:59 CET 2018
IPC: G02B 27/02
G02B 5/32
Applicants: SONY CORPORATION
ソニー株式会社
Inventors: YOSHIKAIE Akira
吉海江 憲
Title: OPTICAL DEVICE, IMAGE DISPLAY DEVICE, AND DISPLAY DEVICE
Abstract:
This optical device, on which light emitted from an image formation device is incident, and by which the light is guided and emitted, has: a light guide plate 30; a first deflection means 41 that deflects the light incident on the light guide plate 30 so that the light is totally reflected inside the light guide plate 30; a second deflection means 42 that deflects the light propagated inside the light guide plate 30 by the total reflection to emit the light from the light guide plate 30; and a third deflection means 43 that deflects, toward the second deflection means 42, the light deflected by the first deflection means 41 and propagated inside the light guide plate 30 by the total reflection, wherein the incident angle to the light guide plate of the light emitted from the center point of an image formation region of the image formation device is an angle other than 0 degrees, and the unit vector of the light emitted from the center point of the image formation region of the image formation device and the unit vector when the light is emitted from the light guide plate have opposite vector directions.