Head mounted display using single display including only one liquid crystal shutter

• US 6,674,493 B2
• Filed: 01/02/2002
• Issued: 01/06/2004
• Est. Priority Date: 01/02/2002
• Status: Expired due to Term

• Current Assignee: Intel Corporation
• Original Assignee: Intel Corporation
• Inventors: Shaw, Jeff A.
• Primary Examiner(s): CHOWDHURY, TARIFUR RASHID
• Application Number:
  US10/038,959
• Publication Number:
  US 20030122732A1
• Time in Patent Office: 734 Days
• Field of Search: 349/11, 349/15, 349/16, 345/7, 345/8, 359/462, 359/630
• US Class Current: 349/11
• CPC Class Codes: G02B 27/017 Head mounted

Abstract

A head mounted display may include a single liquid crystal display element. The display element may successively generate left and right image pairs. A beam slitter may be utilized to successively provide a first image to the left eye and a subsequent image to the right eye and so on so that a stereoscopic image may be produced from a single display element. As a result, the power consumption, cost, size and weight of the head mounted display may be reduced in some embodiments.

Claims

1. A method comprising:

generating an image from a single display; and

successively providing that image through only one liquid crystal shutter in a head mounted display to the left and right eyes of a user.

2. The method of claim 1 wherein generating an image includes reflecting a beam to a first optical path in a first time instance and transmitting the beam to a second optical path in a second time instance.

3. The method of claim 2 including beam splitting a beam to provide separate images for the left and right eyes.

4. The method of claim 3 including beam splitting the beam to supply different images for each eye in different instances of time.

5. The method of claim 1 including splitting a beam into left and right channels and selectively displaying each channel to the user'"'"'s eyes.

6. The method of claim 1 including generating an image from a display, and splitting the beam including the image into two channels for the left and right eyes.

7. The method of claim 6 including transmitting each channel to a different eye.

8. The method of claim 7 including accounting for the difference in path lengths between the first and second channels.

9. The method of claim 8 including displaying an image to one eye of a user in a first instance of time on a first channel and displaying an image at a second instance of time to the other eye of the user in a second channel.

10. A head mounted display comprising:

a single display element; and

a device to provide images from said display element to the left and right eyes of the user in different instances of time, wherein said device includes only one liquid crystal shutter.

11. The display of claim 10 wherein said device includes a beam splitter.

12. The display of claim 11 wherein said liquid crystal shutter and said beam splitter are separate devices.

13. The display of claim 10 wherein said liquid crystal shutter is integrated with a beam splitter.

14. The display of claim 10 including an integrated circuit which includes the display element, a beam splitter, and a liquid crystal shutter.

15. The display of claim 14 including an adapter to adapt for the different path lengths of light from the display element to the left and right eyes.

16. The display of claim 15 including a transmission medium for transmitting light split by the beam splitter to said left and right eyes.

17. The display of claim 16 wherein said transmission medium includes reflective surfaces.

18. A head mounted display comprising:

a display element;

a beam splitter to split light from said head mounted display into two light paths, one of said light paths to be directed to the user'"'"'s left eye and the other of said light paths to be directed to the user'"'"'s right eye; and

a liquid crystal shutter arranged to control the transmission of light to said light paths for the left and right eyes, wherein the display includes only one liquid crystal shutter.

19. The display of claim 18 wherein said beam splitter and said liquid crystal shutter are integrated together.

20. The display of claim 18 including an integrated circuit, said beam splitter and liquid crystal shutter integrated into said integrated circuit.