Image display apparatus and head mount display

Patent metadata

Field	Value
Publication number	US-9874757-B2
Application number	US-201615056267-A
Country	US
Kind code	B2
Filing date	Feb 29, 2016
Priority date	Aug 30, 2013
Publication date	Jan 23, 2018
Grant date	Jan 23, 2018

Abstract

A head mount display (HMD) includes: an image unit; a lens unit; and a housing including a first surface arranged on the front side, a second surface extending rearward from an upper side of the first surface, and a third surface extending rearward from a lower side of the first surface. The HMD further includes a half mirror provided on the left side of the housing and on the left side relative to the lens unit and deflecting, rearward, image light led by the lens unit; an operating member provided on the left side relative to the center in right and left directions of the housing within the first surface and rotating about an axis extending in frontward and rearward directions; and an adjustment mechanism connected to at least one of the image unit and the lens unit and moving the unit(s) according to rotation of the operating member.

First claim

What is claimed is:

1. An image display apparatus comprising:
an image unit that generates image light;
a lens unit including a plurality of lenses whose optical axes extend in a first direction and arranged on one side in the first direction relative to the image unit;
a housing covering at least a part of the image unit and the lens unit and including, relative to the image unit and the lens unit, at least a first face arranged on one side in a second direction perpendicular to the first direction, a second face extending from one side in a third direction perpendicular toward both the first direction and the second direction within the first face toward another side in the second direction, and a third face extending from another side in the third direction toward the other side in the second direction;
a deflection member provided on the one side in the first direction of the housing and on the one side in the first direction relative to the lens unit and deflecting the image light led by the lens unit toward the other side in the second direction;
an operating member that is provided at a position on the one side relative to a center in the first direction of the housing within the first face and that rotates about an axis extending in the second direction as a pivot; and
an adjustment mechanism that engages with at least one of the image unit and the lens unit and that moves at least one of the image unit and the lens unit toward the first direction in accordance with rotation of the operating member,
wherein an end part on the one side in the third direction of the operating member is arranged on the other side in the third direction relative to an end part on the one side in the third direction of the first face,
an end part on the other side in the third direction of the operating member is arranged on the one side in the third direction relative to an end part on the other side in the third direction of the first face,
a length in the third direction of an end part on the one side in the second direction at a first position in the first direction within the operating member is shorter than a length in the third direction of an end part on the other side in the second direction at the first position within the operating member, and
a length in the first direction of an end part on the one side in the second direction at a second position in the third direction within the operating member is shorter than a length in the first direction of an end part on the other side in the second direction at the second position within the operating member.

2. The image display apparatus according to claim 1 ,
wherein the operating member has a frustum shape,
a direction extending from a lower base of the frustum shape toward an upper base of the frustum shape is directed to the one side in the second direction, and
an acute angle of an angle formed by the second direction and a side face of the frustum shape in the operating member is 40 degrees or smaller.

3. The image display apparatus according to claim 1 , wherein the operating member includes a first member extending from the first face toward the one side in the second direction and a second member protruding from the first member toward a direction intersecting with the first direction.

4. The image display apparatus according to claim 3 , wherein the second member includes a plurality of protruding parts protruding in directions different from each other.

5. The image display apparatus according to claim 1 , wherein a rotatable angle of the operating member is 90 degrees or greater and 180 degrees or smaller.

6. The image display apparatus according to claim 5 , wherein the rotatable angle of the operating member is 90 degrees or greater and 120 degrees or smaller.

7. The image display apparatus according to claim 1 , wherein a length in the second direction from the first face of the housing to an end part on the one side in the second direction of the operating member is 3 mm or greater.

8. The image display apparatus according to claim 1 , wherein a portion where the first face and the second face of the housing are connected together and a portion where the first face and the third face are connected together are curved.

9. The image display apparatus according to claim 1 , wherein a distance between the second face and the third face is smaller as approaching the one side from the other side in the second direction.

10. The image display apparatus according to claim 1 ,
wherein an end part on the one side in the first direction of the first face is arranged on another side in the first direction relative to an end part on the one side in the first direction of each of the second face and the third face, and
the deflection member is arranged in a portion located between the second face and the third face and a position in the first direction of the deflection member is on the one side relative to the first face.

11. A head mount display comprising:
the image display apparatus according to claim 1 ;
a mounting member including a first portion extending in the first direction and a pair of second portions extending from both sides of the first portion toward the other side in the second direction; and
a connecting member connected to the first portion of the mounting member and connected to the image display apparatus.

12. The head mount display according to claim 11 ,
wherein the first portion is curved convexly toward the one side in the second direction,
the connecting member extends from the first portion along the third direction,
one end of the connecting member is connected to the mounting member, and
another end of the connecting member is connected to the image display apparatus.

Assignees

• Brother Ind Ltd

Inventors

• Kusuda Miyuki
• Hiraki Nobuo

Classifications

• H04N5/64

  Constructional details of receivers, e.g. cabinets or dust covers (furniture aspects {of television cabinets} A47B81/06) · CPC title

• G02B27/0176 Primary

  characterised by mechanical features · CPC title

• G02B2027/0143

  the two eyes not being equipped with identical nor symmetrical optical devices · CPC title

• G02B2027/0127

  comprising devices increasing the depth of field · CPC title

• G02B2027/0159

  with mechanical means other than scaning means for positioning the whole image · CPC title