DISPLAY APPARATUS HAVING CURVED IMAGE FORMING APPARATUS

• US 20180136472A1
• Filed: 01/11/2018
• Published: 05/17/2018
• Est. Priority Date: 07/16/2013
• Status: Abandoned Application

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Tanaka, Eiichi, Tatsuta, Hirokazu, Hasegawa, Shin, Hasegawa, Yuichi
• Application Number:
  US15/867,870
• Publication Number:
  US 20180136472A1
• Time in Patent Office: Days
• 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 2027/014 comprising information/image processing systems
• CPC Class Codes: G02B 2027/0147 comprising a device modifying the resolution of the displayed image
• CPC Class Codes: G02B 2027/015 involving arrangement aiming to get less bulky devices
• CPC Class Codes: G02B 2027/0159 with mechanical means other than scaning means for positioning the whole image
• CPC Class Codes: G02B 27/017 Head mounted
• CPC Class Codes: G02B 27/0172 characterised by optical features
• CPC Class Codes: G02B 27/0176 characterised by mechanical features
• CPC Class Codes: G02B 27/02 Viewing or reading apparatus stereoscopic systems G02B30/00
• CPC Class Codes: G06T 5/00 Image enhancement or restoration
• CPC Class Codes: G06T 5/80 Geometric correction
• CPC Class Codes: H04N 5/64 Constructional details of receivers, e.g. cabinets or dust covers furniture aspects of television cabinets A47B81/06
• CPC Class Codes: H04N 5/7491 of head mounted projectors

Abstract

A display apparatus includes a frame, an image display apparatus attached to the frame, and a distortion correction apparatus. The image display apparatus includes an image forming apparatus and an optical system configured to guide an image from the image forming apparatus to a pupil of an observer. When it is assumed that a direction, which corresponds to a first direction of the image, of the image forming apparatus is an X-direction and a direction, which corresponds to a second direction of the image which direction is different from the first direction, of the image forming apparatus is a Y-direction, the image forming apparatus is curved in the X-direction and/or in the Y-direction. The distortion correction apparatus corrects an input image signal to correct a distortion of an image to be observed.

Claims

1. A display apparatus comprising:

a frame;

an image display section attached to the frame; and

a distortion correction section,

wherein the image display section includes an image forming unit and wherein a direction, that corresponds to a first direction of an image, of the image forming unit is an X-direction and a direction, that corresponds to a second direction of the image which direction is different from the first direction, of the image forming unit is a Y-direction, and the image forming unit is curved in the X-direction or the Y-direction, or in the X-direction and the Y-direction.

2. The display apparatus according to claim 1, wherein the image display section further includes an optical unit configured to guide an image from the image forming unit to a pupil of an observer.

3. The display apparatus according to claim 1, wherein the distortion correction section corrects an input image signal to correct a distortion of the image to be observed.

4. The display apparatus according to claim 1, wherein the distortion correction section corrects an input image signal in such a manner that a barrel distortion or a pincushion distortion is applied to an input image signal to be corrected.

5. The display apparatus according to claim 1, wherein the distortion correction section corrects, with respect to the input image signal, at least an image signal corresponding to both ends of the image forming unit and a part nearby to correct at least a distortion of an image at both of the ends of the image forming unit and the part nearby.

6. The display apparatus according to claim 2, wherein the optical unit is arranged in such a manner that the image displayed on the image forming unit reaches the pupil of the observer in a defocus state.

7. The display apparatus according to claim 6, wherein resolution in a horizontal direction of the image is made uniform by the optical unit being arranged in such a manner that the image displayed on the image forming unit reaches the pupil of the observer in the defocus state.

8. The display apparatus according to claim 1, wherein the image display section further includes a supporting member configured to support the image forming unit, and a supporting surface of the supporting member configured to support the image forming unit is curved in the X-direction or the Y-direction, or in the X-direction and the Y-direction, whereby the image forming unit is curved.

9. The display apparatus according to claim 8, wherein the supporting member includes a pressing member, an outer shape of the image forming unit is a rectangular shape, and an outer peripheral part of the image forming unit which part is extended in the X-direction is fixed to the supporting member by the pressing member.

10. The display apparatus according to claim 8, wherein an outer shape of the image forming unit is a rectangular shape, and an outer peripheral part of the image forming unit which part is extended in the X-direction is sandwiched by the supporting member.

11. The display apparatus according to claim 2, wherein the image display section includes an adjusting section configured to adjust a distance between the image forming unit and the optical unit.

12. The display apparatus according to claim 11, further comprising a display control section configured to control a size of a whole image from the image forming unit according to the distance between the image forming unit and the optical unit.

13. The display apparatus according to claim 2, wherein the image display section includes an adjusting section configured to adjust a distance between the optical unit and the pupil of the observer.

14. The display apparatus according to claim 1, wherein when it is assumed that an axis which passes through a predetermined point of the image forming unit and which is parallel in the X-direction is an X-axis and an axis which passes through a predetermined point of the image forming unit and which is parallel in the Y-direction is a Y-axis, the image display section further includes a rotation section configured to rotate the image forming unit with at least one of the X-axis, the Y-axis, and a Z-axis as a center.

15. The display apparatus according to claim 1, further comprising a moving section configured to move the image forming unit in the X-direction with respect to the optical unit.

16. The display apparatus according to claim 1, wherein an image display section for a left eye and an image display section for a right eye are attached to the frame, and each image display section includes an image forming unit and an optical unit configured to guide the image from the image forming unit to the pupil of the observer.

17. The display apparatus according to claim 16, wherein each of the optical units includes a reflecting mirror configured to reflect the image from the image forming unit and a lens group which is arranged between the pupil of the observer and the reflecting mirror and into which the image reflected by the reflecting mirror becomes incident, and a normal of the reflecting mirror included in the optical unit of the image display section for a left eye and a normal of the reflecting mirror included in the optical unit of the image display section for a right eye intersect with each other in a space on an opposite side of the observer with respect to the reflecting mirrors.

18. The display apparatus according to claim 17, wherein the normal of the reflecting mirror included in the optical unit of the image display section for a left eye and the normal of the reflecting mirror included in the optical unit of the image display section for a right eye intersect with each other in a space lower than a virtual plane including both pupils of the observer and an infinite distance.

19. The display apparatus according to claim 17, wherein the image forming unit is arranged in an upper part of the reflecting mirror.

20. The display apparatus according to claim 1, wherein the image forming unit includes an organic electro-luminescence display section.