Virtual image display apparatus

Patent metadata

Field	Value
Publication number	US-2018024368-A1
Application number	US-201715428598-A
Country	US
Kind code	A1
Filing date	Feb 9, 2017
Priority date	Jul 21, 2016
Publication date	Jan 25, 2018
Grant date	—

Abstract

A virtual image display apparatus includes a case member that stores a image element and is provided with a first end connected to other members, an optical component holding member with which an optical component guiding image light from the image element is assembled and that is provided with a second end connected to the first end, three or more protruding portions that are provided at one of the first end and the second end, have protrusion shapes, and extend toward the other end, three or more grooves that are provided at the other end, have depression shapes corresponding to the three or more protruding portions, and extend, and adhesive portions that fix the three or more protruding portions to the three or more grooves in a state in which the case member is aligned with the optical component holding member.

First claim

What is claimed is:

1 . A virtual image display apparatus comprising:
a case member that stores a image element and is provided with a first end connected to other members; an optical component holding member with which an optical component guiding image light from the image element is assembled and that is provided with a second end connected to the first end; three or more protruding portions that are provided at one of the first end and the second end, have protrusion shapes, and extend toward the other end; three or more grooves that are provided at the other end, have depression shapes corresponding to the three or more protruding portions, and extend; and adhesive portions that fix the three or more protruding portions to the three or more grooves in a state in which the case member is aligned with the optical component holding member, wherein, among the three or more protruding portions, at least one protruding portion is disposed on an opposite side to one or more other protruding portions with a display region of the image element interposed therebetween.

2 . The virtual image display apparatus according to claim 1 ,
wherein the three or more protruding portions are disposed at positions corresponding to a peripheral side forming an edge portion of the case member so as to be separated from each other.

3 . The virtual image display apparatus according to claim 1 ,
wherein, among the three or more protruding portions, at least one protruding portion is disposed on an opposite side to two or more other protruding portions with the display region of the image element interposed therebetween.

4 . The virtual image display apparatus according to claim 1 ,
wherein, among the three or more protruding portions, two or more protruding portions are disposed along one side of the image element in a longitudinal direction of the display region of the image element.

5 . The virtual image display apparatus according to claim 1 ,
wherein the three or more protruding portions are formed of four protruding portions disposed to correspond to four corners of the case member.

6 . The virtual image display apparatus according to claim 1 , further comprising:
a wiring member that is located near the first and second ends and is disposed on a lateral side on which external force is applied to the adhesive portions from a direction which is perpendicular to a direction in which the first end and the second end are connected to each other.

7 . The virtual image display apparatus according to claim 1 ,
wherein each of the three or more grooves has wall surface portions formed of a plurality of surfaces.

8 . The virtual image display apparatus according to claim 7 ,
wherein each of the three or more protruding portions has a prismatic shape, and wherein, in each of the three or more grooves, the wall surface portion is formed of a plurality of surfaces corresponding to a surface shape of a corresponding protruding portion.

9 . The virtual image display apparatus according to claim 7 ,
wherein the wall surface portion is formed of three or more surfaces which are respectively directed in three directions which are orthogonal to each other.

10 . The virtual image display apparatus according to claim 9 ,
wherein two of the three directions which are perpendicular to each other are directions which are orthogonal to an optical axis direction of the image element and the optical component.

11 . The virtual image display apparatus according to claim 1 ,
wherein the three or more protruding portions are disposed to be symmetric to each other with respect to the image element.

12 . The virtual image display apparatus according to claim 1 ,
wherein the adhesive portions are formed of an adhesive filling the respective grooves when the three or more protruding portions are respectively fixed to the three or more corresponding grooves.

13 . The virtual image display apparatus according to claim 1 ,
wherein the adhesive portions are formed of an ultraviolet curable resin.

14 . The virtual image display apparatus according to claim 1 ,
wherein the first end is provided with the three or more protruding portions, and wherein the case member includes a low reflection coating portion that is provided on at least a surface disposed on a light emission side in the vicinity of the image element, and a surface portion including the three or more protruding portions.

15 . The virtual image display apparatus according to claim 14 ,
wherein the low reflection coating portion is formed on a surface portion including an inclined surface which is inclined with respect to the image element.

16 . The virtual image display apparatus according to claim 1 ,
wherein each of the three or more protruding portions has an embossed structure.

17 . The virtual image display apparatus according to claim 1 ,
wherein, of the first end and the second end, an end provided with the three or more protruding portions is provided with three or more support portions that are provided to respectively correspond to the three or more protruding portions, thicker than the three or more protruding portions, and respectively support the three or more protruding portions.

18 . The virtual image display apparatus according to claim 1 ,
wherein each of the first end and the second end is provided with a void forming portion that is provided at a non-adhesive location and forms a void, and wherein the virtual image display apparatus further includes a sealing member that seals the void formed by the void forming portion.

19 . The virtual image display apparatus according to claim 1 ,
wherein the image element includes an FPC portion, and wherein the case member includes an FPC holding member that covers and holds connection locations between the FPC portion of the image element and other members.

Assignees

• Seiko Epson Corp

Inventors

• Takagi Masayuki
• Miyao Toshiaki
• Takeda Takashi
• Komatsu Akira
• Ikeda Takuya

Classifications

• G02B2027/0169

  Supporting or connecting means other than the external walls · CPC title

• G02B27/0081

  with means for altering, e.g. enlarging, the entrance or exit pupil · CPC title

• G02B2027/0178

  Eyeglass type (eyeglass details G02C) · CPC title

• G02B7/025

  using glue · CPC title

• G02B6/0001

  specially adapted for lighting devices or systems (lighting or signalling on vehicles using light guides B60Q1/00; lighting devices for vehicle dashboards B60Q3/10; lighting devices for vehicle interior using light guides B60Q3/62; lighting devices mounted on the vehicle rear part using light guides F21S43/235; measuring arrangements having light conducting pointers G01D13/265; illumination of liquid crystal displays G02F1/1336; illuminated signs G09F13/00) · CPC title