LIGHT GUIDE UNIT, IMAGE DISPLAY DEVICE, AND DISPLAY APPARATUS

• US 20150277125A1
• Filed: 03/17/2015
• Published: 10/01/2015
• Est. Priority Date: 03/25/2014
• Status: Active Grant

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Hirano, Takaaki, Isobe, Hiroshi, Fukumoto, Koji
• Granted Patent: US 10,338,388 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G02B 2027/011 comprising device for correcting geometrical aberrations, distortion
• CPC Class Codes: G02B 2027/0132 comprising binocular systems
• CPC Class Codes: G02B 2027/0161 characterised by the relative positioning of the constitutive elements
• CPC Class Codes: G02B 2027/0174 holographic
• CPC Class Codes: G02B 2027/0178 Eyeglass type eyeglass details G02C
• CPC Class Codes: G02B 27/0101 characterised by optical features G02B27/0172 takes precedence
• CPC Class Codes: G02B 27/0149 characterised by mechanical features G02B27/0176 takes precedence
• CPC Class Codes: G02B 27/0172 characterised by optical features
• CPC Class Codes: G02B 27/0176 characterised by mechanical features
• CPC Class Codes: G02B 6/0088 of the light guide or other optical sheets in the package
• CPC Class Codes: G02B 6/0093 Means for protecting the light guide

Abstract

There is provided an image display device that comprises an image forming unit and a light guide unit.

The light guide unit includes a light guide plate configured to guide light of an image formed in the image forming unit, and a support member. The light guide plate is supported by one or more buffer members at, at least, a plurality of portions of the support member.

Claims

1. An image display device, comprising:

an image forming unit; and

a light guide unit, the light guide unit including

a light guide plate configured to guide light of an image formed in the image forming unit, and

a support member,

the light guide plate being supported by one or more buffer members at, at least, a plurality of portions of the support member.

2. The image display device according to claim 1, wherein:

the one or more buffer members comprise a first buffer member and a second buffer member separate from the first buffer member.

3. The image display device according to claim 2, wherein:

the light guide plate is supported by the first buffer member at a first portion of the support member, and

the light guide plate is supported by the second buffer member at a second portion of the support member, the first and second portions being opposed to each other with the light guide plate being sandwiched therebetween.

4. The image display device according to claim 1, wherein:

the one or more buffer members comprise a continuous buffer member adapted to be in contact with an outer circumferential portion of at least two sides of the light guide plate.

5. The image display device according to claim 1, wherein:

an elastic modulus of the buffer member is smaller than an elastic modulus of the light guide plate.

6. The image display device according to claim 1, wherein:

the buffer member is made of resin.

7. The image display device according to claim 1, wherein:

the light guide plate includes four sides; and

the support member is shaped to be around the light guide plate on four sides.

8. The image display device according to claim 7, wherein:

the light guide plate is rectangular.

18. The image display device according to claim 1, further comprising a dimmer unit.

9. An image display device, comprising:

an image forming unit; and

a light guide unit, the light guide unit including

a light guide plate configured to guide light of an image formed in the image forming unit, and

a support member,

the light guide plate and the support member including therebetween a fixing member, the fixing member being provided around the light guide plate to fix the light guide plate to the support member.

10. The image display device according to claim 9, wherein:

the fixing member is provided with a buffer area.

11. The image display device according to claim 9, wherein:

the fixing member comprises a spring.

12. The image display device according to claim 9, wherein:

the fixing member comprises an adhesive layer.

13. The image display device according to claim 12, wherein:

the adhesive layer is formed with a notch section.

14. The image display device according to claim 9, wherein:

the light guide plate is provided with a buffer area on an outer circumferential section.

15. The image display device according to claim 14, wherein:

the buffer area is formed with a notch section.

16. The image display device according to claim 9, wherein:

the support member is provided with a buffer area on an inner circumferential section.

17. The image display device according to claim 16, wherein:

the buffer area is provided with a notch section.

19. A light guide unit, comprising:

a light guide plate; and

a support member,

the light guide plate being supported by one or more buffer members, the one or more buffer members supporting the light guide plate at, at least, a plurality of portions of the support member.

20. A light guide unit, comprising:

a light guide plate; and

a support member,

the light guide plate and the support member including therebetween a fixing member, the fixing member being provided around the light guide plate to fix the light guide plate to the support member.

21. A display apparatus, comprising:

a frame; and

an image display device attached to the frame,

the image display device including

an image forming unit, and

a light guide unit,

the light guide unit including

a light guide plate configured to guide light of an image formed in the image forming unit, and

a support member,

the light guide plate being supported by one or more buffer members, the one or more buffer members supporting the light guide plate at, at least, a plurality of portions of the support member.

22. The display apparatus according to claim 21, wherein the frame is configured to be mounted on a viewer'"'"'s head portion.

23. A display apparatus, comprising:

a frame; and

an image display device attached to the frame,

the image display device including

an image forming unit, and

a light guide unit,

the light guide unit including

a light guide plate configured to guide light of an image formed in the image forming unit, and

a support member,

the light guide plate and the support member including therebetween a fixing member, the fixing member being provided around the light guide plate to fix the light guide plate to the support member.

24. The display apparatus according to claim 23, wherein the frame is configured to be mounted on a viewer'"'"'s head portion.