Invention Grant
US09279980B2 Optical device, image display apparatus and head-mounted display unit
有权
光学装置,图像显示装置和头戴显示装置
- Patent Title: Optical device, image display apparatus and head-mounted display unit
- Patent Title (中): 光学装置,图像显示装置和头戴显示装置
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Application No.: US14301950Application Date: 2014-06-11
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Publication No.: US09279980B2Publication Date: 2016-03-08
- Inventor: Kazuya Hayashibe , Hiroshi Tanaka , Teppei Imamura
- Applicant: Sony Corporation
- Applicant Address: JP Tokyo
- Assignee: Sony Corporation
- Current Assignee: Sony Corporation
- Current Assignee Address: JP Tokyo
- Agency: Wolf, Greenfield & Sacks, P.C.
- Priority: JP2010-144453 20100625
- Main IPC: G02B26/10
- IPC: G02B26/10 ; G02B27/01 ; G02B5/30

Abstract:
Disclosed herein is an image display apparatus, including: a light source; and a scanning section adapted to scan a light beam emitted from the light source; the scanning section including (a) a first mirror, (b) a first light deflection section, (c) a second mirror, and (d) a second light deflection section; the second light deflection section including an external light receiving face; the second light deflection section having a plurality of translucent films provided in the inside thereof; the translucent films having a light reflectivity R2 at a wavelength of the light beam which satisfies: R2≦k×{(P2/t2)×tan(ζ2)}1/2 where k is a constant higher 0 but lower than 1, P2 an array pitch of the translucent films, t2 a thickness of the second light deflection section, and ζ2 an angle formed between the light emitting face and the translucent films.
Public/Granted literature
- US20140293390A1 OPTICAL DEVICE, IMAGE DISPLAY APPARATUS AND HEAD-MOUNTED DISPLAY UNIT Public/Granted day:2014-10-02
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