Display, control method of display, and program

Patent metadata

Field	Value
Publication number	US-2016284129-A1
Application number	US-201615049203-A
Country	US
Kind code	A1
Filing date	Feb 22, 2016
Priority date	Mar 27, 2015
Publication date	Sep 29, 2016
Grant date	—

Abstract

A HMD is provided with a virtual image display including a first display and a second display that display images respectively corresponding to a right eye and a left eye of a user such that an outside scene is visible. The HMD is provided with a control device that controls a display mode of the image by the virtual image display according to a gaze distance of the user.

First claim

What is claimed is:

1 . A display comprising:
display units that display images respectively corresponding to a right eye and a left eye of a user such that an outside scene is visible; and a control unit that controls a display mode of the image by each of the display units according to a gaze distance of the user.

2 . The display according to claim 1 ,
wherein the control unit changes a display position of the image and/or a display size of the image, by the display unit, according to the gaze distance of the user.

3 . The display according to claim 1 ,
wherein the control unit controls the display mode of the image by the display unit, based on a convergence angle between both eyes corresponding to the gaze distance of the user.

4 . The display according to claim 3 ,
wherein the control unit obtains the convergence angle between both eyes of the user, and varies a position where the user views an image displayed on the display unit, according to the obtained convergence angle.

5 . The display according to claim 4 ,
wherein the control unit shifts a display position where the display unit displays the image, from a standard position that is set in advance, according to the convergence angle between both eyes of the user.

6 . The display according to claim 1 , further comprising:
a state detecting unit that detects state of both eyes of the user, wherein the control unit calculates the gaze distance of the user, based on a detection result of the state detecting unit, and controls a display mode of an image by the display unit according to the calculated gaze distance.

7 . The display according to claim 6 ,
wherein the state detecting unit includes first imaging units that are respectively provided corresponding to a right eye and a left eye of the user, and wherein the control unit calculates the gaze distance of the user, by obtaining at least one of a pupillary distance, a pupil diameter, and a gaze time in a gaze direction of each of both eyes of the user, based on a captured image of the first imaging unit.

8 . The display according to claim 6 ,
wherein the state detecting unit includes a second imaging unit that captures a gaze direction of the user, and wherein the control unit calculates the gaze distance of the user, by obtaining a distance to a gaze object that the user gazes, based on the captured image of the second imaging unit.

9 . The display according to claim 1 ,
wherein the display unit includes
an emitting unit that emits image light;
an optical system that guides the image light which is emitted by the emitting unit, to each of the right eye and the left eye of the user; and
a change unit that displaces at least a portion of members constituting the emitting unit or the optical system, and changes an angle of the image light that is incident from the optical system to the right eye and the left eye of the user, and
wherein the control unit operates the change unit according to the gaze distance of the user.

10 . The display according to claim 1 ,
wherein the control unit controls a position of an image, in a display range in which the user views an image displayed on the display unit, according to the gaze distance of the user.

11 . The display according to claim 10 , comprising:
an image generation unit that generates an image that the display unit displays based on image data, wherein the control unit generates an image for adjustment by cutting out a part of the image data by the image generation unit, according to the gaze distance of the user, and displays the image for adjustment on the display unit.

12 . The display according to claim 1 ,
wherein the control unit causes the display unit to display an image corresponding to either the right eye or the left eye of the user, when the gaze distance of the user is closer than a reference distance that is set in advance.

13 . A display which displays images respectively corresponding to a right eye and a left eye of a user such that an outside scene is visible, the display comprising:
a display unit including
an emitting unit that emits image light;
an optical system that guides the image light which is emitted by the emitting unit, to each of the right eye and the left eye of the user; and
a change unit that changes an emission direction of the emitting unit or an incidence angle of the image light that is incident from the optical system to the right eye and the left eye of the user,
an image generation unit that generates an image that the display unit displays based on image data; and a control unit that performs at least one of a process of calculating the gaze distance of the user, and operating the change unit according to the calculated gaze distance, and a process of generating an image for adjustment by cutting out a part of the image data, by the image generation unit, according to the gaze distance of the user, and displaying the image for adjustment on the display unit.

14 . The display according to claim 1 , further comprising:
an external imaging unit, wherein the control unit is capable of executing a process of displaying an image based on a captured image of the external imaging unit on the display unit.

15 . The display according to claim 14 ,
wherein the display unit is configured such that the user can view an outside scene by external light passing through the display unit, and visibly displays the image based on the captured image of the external imaging unit and the outside scene at the same time.

16 . The display according to claim 14 ,
wherein the control unit executes a process of improving the visibility of the image based on the captured image, as compared to external light passing through the display unit, when the image based on the captured image is displayed on the display unit.

17 . The display according to claim 16 ,
wherein the control unit executes a process of improving the visibility of the image based on the captured image, by varying brightness or color of the image based on the captured image, or executing an edge enhancement process on the image based on the captured image, when the image based on the captured image is displayed on the display unit.

18 . The display according to claim 14 ,
wherein the control unit causes the display unit to display an image based on a captured image of the external imaging unit, corresponding to either the right eye or the left eye of the user.

19 . The display according to claim 14 ,
wherein the control unit causes the display unit to display an image based on a captured image of the external imaging unit, corresponding to each of the right eye and the left eye of the user, in a manner without left and right parallax.

20 . The display according to claim 14 ,
wherein the control unit causes the display unit to display a captured image of the external imaging unit in an enlarged manner.

21 . The display according to claim 14 ,
wherein the control unit causes the display unit to display the image based on the captured image of the external imaging unit, when an operation of the user is received.

22 . The display according to claim 14 ,
wherein the control unit detects a gaze distance of the user, and displays the image based on the captured image of the external imaging unit, when the detected gaze distance is shorter than a distance that is set in advance.

23 . The display according to claim 14

Assignees

• Seiko Epson Corp

Inventors

• Nishizawa Kazuo
• Takano Masahide

Classifications

• G02B2027/0178

  Eyeglass type (eyeglass details G02C) · CPC title

• G02B2027/014

  comprising information/image processing systems · CPC title

• G02B2027/0138

  comprising image capture systems, e.g. camera · CPC title

• G02B2027/0129

  comprising devices for correcting parallax · CPC title

• G02B2027/0127

  comprising devices increasing the depth of field · CPC title