Virtual image display apparatus

Patent metadata

Field	Value
Publication number	US-9535249-B2
Application number	US-201314079153-A
Country	US
Kind code	B2
Filing date	Nov 13, 2013
Priority date	Nov 19, 2012
Publication date	Jan 3, 2017
Grant date	Jan 3, 2017

Abstract

A trapezoidal correction processing portion performs trapezoidal correction (distortion correction) on video image areas each of which is divided into a plurality of video image areas separately in accordance with the divided video image areas. In this case, each of the video image areas is divided into a plurality of areas. Further, a pair of right and left virtual image formation sections perform trapezoidal correction in a mirror symmetric manner, and the center position of the wearer's eye in each of the virtual image formation sections is so adjusted that the center position coincides with a distortion-free image corrected by using a small amount of correction.

First claim

What is claimed is:

1. A virtual image display apparatus comprising:
an image processing section that processes an image signal that allows a user to visually recognize a virtual image in accordance with an input signal, the virtual image being one of a right-eye virtual image and a left-eye virtual image;
a video image generation section that generates light that allows the user to visually recognize the virtual image in accordance with the image signal from the image processing section; and
a virtual image formation section that allows the user to visually recognize the light from the video image generation section in the form of the virtual image displayed in an imaginary video image area,
wherein when the video image generation section generates the light and the virtual image formation section allows the user to visually recognize the light from the video image generation section in the form of the virtual image, distortion is produced at least in one of horizontal and vertical directions,
the image processing section includes a distortion correction processing portion that performs distortion correction on the virtual image to be recognized by the user, and
the image processing section divides the video image area, which the virtual image formation section allows the user to visually recognize, into a plurality of divided video image areas, and the distortion correction processing portion performs distortion correction in correspondence with each of the divided video image areas, the plurality of divided video image areas including at least a first video image area and a second video image area, the distortion correction processing portion being configured to selectively perform distortion correction in the first video image area without performing distortion correction in the second video image area.

2. The virtual image display apparatus according to claim 1 , wherein
the distortion correction processing portion performs individual distortion correction in correspondence with each of the divided video image areas.

3. The virtual image display apparatus according to claim 1 , wherein
the first video image area is located in an inner position and the second video image area is located in an outer position.

4. The virtual image display apparatus according to claim 3 , further comprising
an input reception section that receives an instruction from the user,
wherein the image processing section displays an icon related to the receiving action of the input reception section in the second video image area, which the virtual image formation section allows the user to visually recognize.

5. The virtual image display apparatus according to claim 3 , wherein
the virtual image formation section is formed of a pair of a right-eye-side virtual image formation section and a left-eye-side virtual image formation section that correspond to the right and left eyes respectively,
the image processing section processes the image signal in such a way that the first video image area of the video image area that the right-eye-side virtual image formation section allows the user to visually recognize includes a right-eye-side first video image area and the second video image area of the video image area that the right-eye-side virtual image formation section allows the user to visually recognize includes a right-eye-side second video image area,
the image processing section processes the image signal in such a way that the first video image area of the video image area that the left-eye-side virtual image formation section allows the user to visually recognize includes a left-eye-side first video image area and the second video image area of the video image area that the left-eye-side virtual image formation section allows the user to visually recognize includes a left-eye-side second video image area, and
the image processing section displays video images common to the right and left sides in the right-eye-side first video image area and the left-eye-side first video image area.

6. The virtual image display apparatus according to claim 5 , wherein
the image processing section displays independent video images formed in the right-eye-side second video image area and displays other independent video images formed in the left-eye-side second video image area.

7. The virtual image display apparatus according to claim 5 , wherein
the distortion correction processing portion performs distortion correction only on the right-eye-side first video image area and the left-eye-side first video image area, where the video images common to the right and left sides are displayed.

8. The virtual image display apparatus according to claim 5 , wherein
the image processing section forms the right-eye-side second video image area, which the right-eye-side virtual image formation section allows the user to visually recognize, in a range outside the vision of the user when the user moves the line of sight leftward, whereas forming the left-eye-side second video image area, which the left-eye-side virtual image formation section allows the user to visually recognize, in a range outside the vision of the user when the user moves the line of sight rightward.

9. The virtual image display apparatus to claim 1 , wherein
the video image generation section and/or the virtual image formation section produces at least horizontal trapezoidal distortion.

10. The virtual image display apparatus according to claim 1 , wherein
the video image generation section includes a signal light modulator that outputs signal light modulated in correspondence with an image and a scan system that causes the signal light incident from the signal light modulator to undergo a scan process and outputs the resultant light as scan light.

11. A virtual image display apparatus comprising:
an image processing section that processes an image signal that allows a user to visually recognize a virtual image in accordance with an input signal;
a video image generation section that generates light that allows the user to visually recognize the virtual image in accordance with the image signal from the image processing section; and
a virtual image formation section that allows the user to visually recognize the light from the video image generation section in the form of the virtual image displayed in an imaginary video image area,
wherein when the video image generation section generates the light and the virtual image formation section allows the user to visually recognize the light from the video image generation section in the form of the virtual image, distortion is produced at least in one of horizontal and vertical directions,
the image processing section includes a distortion correction processing portion that performs distortion correction on the virtual image to be recognized by the user,
the virtual image formation section is formed of a pair of a right-eye-side virtual image formation section and a left-eye-side virtual image formation section that correspond to the right and left eyes respectively,
the distortion correction processing portion performs distortion correction on the right-eye-side virtual image formation section and distortion correction on the left-eye-side virtual image formation section in a mirror symmetric manner with respect to an axis of symmetry in a rightward/leftward direction, the distortion correction processing portion performing distortion correction such that coordinates of original image data match coordinates of the video image area when the original image data is projected on the virtual image formation section,
the image processing section divides the video image area, which the virtual image formation

Assignees

• Seiko Epson Corp

Inventors

• Takeda Takashi
• Totani Takahiro
• Takagi Masayuki
• Komatsu Akira
• Miyao Toshiaki

Classifications

• G02B26/10

  Scanning systems · CPC title

• G02B2027/014

  comprising information/image processing systems · CPC title

• G02B2027/0178

  Eyeglass type (eyeglass details G02C) · CPC title

• G02B27/017 Primary

  Head mounted · CPC title

• G02B2027/011

  comprising device for correcting geometrical aberrations, distortion · CPC title