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Title:
OPTICAL DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/025628
Kind Code:
A1
Abstract:
Provided is an optical device capable of minimizing visibility degradation of a stereoscopic image in a space along a wide viewing angle direction. The optical device (1A) includes a light guide plate (10) that guides light entering from a light source and deflects the optical path of the guided light causing the light to exit from an emission surface (12), thereby forming an image in a space. The optical device includes a narrow-view deflector group (27) that forms an image in a space along a narrow viewing angle direction at 0° or greater but less than a first angle relative to a reference plane perpendicular to the emission surface (12) and parallel to a side surface (14) of the light guide plate (10), and a wide-view deflector group (28) that forms an image in a space along a wide viewing angle direction at the first angle or greater but less than 90° relative to the reference plane. The image forming condition created by the narrow-view deflector group (27) is different from the image forming condition created by the wide-view deflector group (28).

Inventors:
SHINOHARA, Masayuki (801 Minamifudodo-cho, Horikawahigashiiru, Shiokoji-dori, Shimogyo-ku, Kyoto-sh, Kyoto 30, 〒6008530, JP)
TANOUE, Yasuhiro (801 Minamifudodo-cho, Horikawahigashiiru, Shiokoji-dori, Shimogyo-ku, Kyoto-sh, Kyoto 30, 〒6008530, JP)
KURATA, Gouo (801 Minamifudodo-cho, Horikawahigashiiru, Shiokoji-dori, Shimogyo-ku, Kyoto-sh, Kyoto 30, 〒6008530, JP)
KITAMURA, Norikazu (801 Minamifudodo-cho, Horikawahigashiiru, Shiokoji-dori, Shimogyo-ku, Kyoto-sh, Kyoto 30, 〒6008530, JP)
OKADA, Kazuyuki (801 Minamifudodo-cho, Horikawahigashiiru, Shiokoji-dori, Shimogyo-ku, Kyoto-sh, Kyoto 30, 〒6008530, JP)
Application Number:
JP2017/025981
Publication Date:
February 08, 2018
Filing Date:
July 18, 2017
Export Citation:
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Assignee:
OMRON CORPORATION (801 Minamifudodo-cho, Horikawahigashiiru Shiokoji-dori, Shimogyo-ku, Kyoto-sh, Kyoto 30, 〒6008530, JP)
International Classes:
G02B27/22; F21S2/00; G03B35/18; G09F13/18; G09F19/12
Attorney, Agent or Firm:
MURAKAMI, Takashi (Daiwa Minamimorimachi Building 4F, 2-6 Tenjinbashi 2-chome Kita, Kita-ku, Osaka-sh, Osaka 41, 〒5300041, JP)
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