Image display apparatus

Patent metadata

Field	Value
Publication number	US-9075232-B2
Application number	US-201414558327-A
Country	US
Kind code	B2
Filing date	Dec 2, 2014
Priority date	Aug 18, 2008
Publication date	Jul 7, 2015
Grant date	Jul 7, 2015

Abstract

An image display apparatus is provided. The image display apparatus including an image forming device; an optical device on which a light is incident from the image forming device, in which the light is guided, and from which the light is emitted, wherein the optical device includes a light guide plate, a reflecting element, and a half mirror, wherein the following condition is satisfied:

2 t ·tan θ−2≦ L ≦2 t ·tan θ+2

where an axial direction of the light guide plate is the Y-direction, a normal direction of the light guide plate is the X-direction, L (unit: mm) represents an effective length of the reflecting element in the Y-direction, t represents the thickness of the light guide plate, and θ represents the incident angle of the light, which is totally reflected in the light guide plate, on an inner surface of the light guide plate.

First claim

The application is claimed as follows:

1. An image display apparatus comprising:
an image forming device;
an optical device on which a light is incident from the image forming device, in which the light is guided, and from which the light is emitted,
wherein the optical device includes a light guide plate, a reflecting element, and a half mirror,
wherein the following condition is satisfied:
2 t ·tan θ−2≦ L≦ 2 t ·tan θ+2

where an axial direction of the light guide pl…

Assignees

• Sony Corp

Inventors

• Mukawa Hiroshi

Classifications

• G02B26/101

  Physics · mapped topic

• G02B5/18

  Physics · mapped topic

• G02B5/32

  Physics · mapped topic

• G02B6/0055

  Physics · mapped topic

• G02B2027/0174

  Physics · mapped topic