HEAD MOUNTED DISPLAY AND DRIVE METHOD THEREOF

• US 20110267321A1
• Filed: 07/07/2011
• Published: 11/03/2011
• Est. Priority Date: 01/16/2009
• Status: Abandoned Application

• Current Assignee: Brother Kogyo Kabushiki Kaisha
• Original Assignee: Brother Kogyo Kabushiki Kaisha
• Inventors: HAYAKAWA, Kazuhiro
• Application Number:
  US13/178,105
• Publication Number:
  US 20110267321A1
• Time in Patent Office: Days
• US Class Current: 345/204
• CPC Class Codes: G02B 2027/014 comprising information/image processing systems
• CPC Class Codes: G02B 27/0093 with means for monitoring data relating to the user, e.g. head-tracking, eye-tracking
• CPC Class Codes: G02B 27/017 Head mounted
• CPC Class Codes: G02B 27/0176 characterised by mechanical features
• CPC Class Codes: G02C 9/00 Attaching auxiliary optical parts auxiliary optical parts per se G02C7/08 - G02C7/16

Abstract

A head mounted display includes a display device and a pressure detecting part. The display device includes an eyeglass type frame provided with temples which are connected to a front frame in an openable/closable manner, a light source part, a drive part and a control part. The pressure detecting part detects opening/closing of the temple with respect to the front frame. The control part controls a starting of the operation of the drive part and a starting of the operation of a light source part corresponding to magnitude of pressure detected by the pressure detecting part.

Claims

1. A head mounted display comprising:

an eyeglass-type frame comprising a front frame and temples which are connected to the front frame in an open/close manner;

a display device which includes a light source part, a drive part which is configured to convert light emitted from the light source part into a projection light for representing an image, and a control part which is configured to control starting of an operation of the light source part and starting of an operation of the drive part; and

a pressure detecting part which is configured to detect opening/closing of at least one of the temples with respect to the front frame, wherein

a wraparound endpiece is arranged at a connecting portion where the front frame and the temple are connected to each other,

an open/close part whose gap is narrowed when the temple is configured to be opened with respect to the front frame is mounted on the wraparound endpiece,

the pressure detecting part is configured to detect a pressure generated in the open/close part, and

the control part is configured to control the starting of the operation of the drive part and the starting of the operation of the light source part corresponding to magnitude of pressure which the pressure detecting part detects.

2. The head mounted display according to claim 1, wherein the pressure detecting part is configured to detect a first pressure in a state where the temple is opened with respect to the front frame and to detect a second pressure larger than the first pressure in a state where the eyeglass-type frame is mounted on a head of a user, and

the control part is configured to start the operation of the light source part in response to detection of the second pressure by the pressure detecting part.

3. The head mounted display according to claim 2, wherein the control part is configured to start the operation of the drive part in response to detection of the first pressure by the pressure detecting part.

4. The head mounted display according to claim 3, wherein the drive part includes an optical scanner part which is configured to convert light emitted from the light source part into a projection light by scanning the light with a oscillating reflection surface.

5. The head mounted display according to claim 1, wherein the pressure detecting part is arranged in a gap of the open/close part.

6. The head mounted display according to claim 1, wherein the display device includes a mounting part which is detachably mounted on the eyeglass-type frame, and the pressure detecting part is mounted on the mounting part.

7. The head mounted display according to claim 6, wherein the mounting part includes a mounting jig which is inserted into a gap of the open/close part, and the pressure detecting part is mounted on the mounting jig.

8. The head mounted display according to claim 4, wherein the control part is configured to start the operation of the drive part after a predetermined time elapses from detection of the first pressure by the pressure detecting part.

9. The head mounted display according to claim 4, wherein the control part is configured to allow the light source part to emit light after a predetermined time elapses from detection of the second pressure by the pressure detecting part.

10. A method of driving a head mounted display comprising:

an eyeglass-type frame comprising a front frame and temples which are connected to the front frame in an open/close manner; and

a display device which includes a light source part, a drive part which is configured to convert light emitted from the light source part into a projection light for representing an image, the head mounted display further comprising a pressure detecting part which is configured to detect opening/closing of at least one of the temples with respect to the front frame, the method comprising the steps of;

detecting a pressure generated by the opening/closing of the temple by the pressure detecting part;

starting an operation of the drive part in response to detection of a first pressure by the pressure detecting part; and

starting an operation of the light source part in response to detection of a second pressure larger than the first pressure by the pressure detecting part.