Head-mounted display device

Abstract

To reduce the load on a control unit required for distortion correction of a video.SOLUTION: A head-mounted type display device 100 comprises: a control unit 88 that corrects a video; a display element 11 that displays the video corrected by the control unit 88; a first optical member 22 on which video light corresponding to the video is incident; and a reflecting member 23 that reflects the video light from the first optical member 22 to project a virtual image corresponding to the video. The first optical member 22 and the reflecting member 23 correct distortion related to the virtual image in a first direction, and the control unit 88 corrects the video according to distortion related to the virtual image in a second direction intersecting the first direction.SELECTED DRAWING: Figure 2

Claims

1. A control unit that corrects the image, A display element that displays the image corrected by the control unit, A first optical member into which image light corresponding to the aforementioned image is incident, The system comprises a reflective member that reflects the image light from the first optical member and projects a virtual image corresponding to the image, The first optical member and the reflective member correct the distortion in the first direction with respect to the virtual image, The control unit corrects the image according to the distortion in a second direction that intersects with the first direction relating to the virtual image. The second direction is the direction corresponding to the scanning direction of the display element, When y is the coordinate of the image before correction in the first direction, x is the coordinate of the image before correction in the second direction, U is the coordinate of the image after correction in the second direction, a is the coefficient corresponding to the length of the image after correction in the second direction, b is the coefficient corresponding to the angle between the side in the first direction and the side in the second direction of the image after correction, and c is the coefficient corresponding to the distortion of one tilt in the second direction and the other tilt in the second direction of the image after correction, The coefficient c includes the case where it is 0. The control unit corrects the image so that it satisfies the following equation, and is a head-mounted display device. U=ax+bxy+cy

2. The head-mounted display device according to claim 1, wherein the control unit corrects the image so that the length of the second direction in one of the first directions of the image is shorter than the length of the second direction in the other of the first directions of the image.

3. The head-mounted display device according to claim 1, wherein coefficient a, coefficient b, and coefficient c are rewritable parameters.

4. The display element displays a first image including a first wavelength, a second image including a second wavelength which is shorter than the first wavelength, and a third image including a third wavelength which is longer than the first wavelength. The length in the second direction in the first image is the length between the length in the second direction in the second image and the length in the second direction in the third image. The head-mounted display device according to any one of claims 1 to 3, wherein the length in the first direction in the first image is the same as the length in the first direction in the second image and the length in the first direction in the third image.

5. The corrected image includes a first corrected region obtained by correcting the first region of the image before correction, and a second corrected region obtained by correcting the second region of the image before correction that is aligned with the first region in the second direction. The head-mounted display device according to any one of claims 1 to 4, wherein the number of pixels in the second direction of the first correction region after correction is within ±10% of the number of pixels in the second direction of the second correction region after correction.

6. The head-mounted display device according to any one of claims 1 to 5, wherein the reflective member is provided such that the angle θ1 formed by the image light incident from the first optical member to the reflective member and the image light reflected by the reflective member to the pupil position is 10° ≤ θ1 ≤ 70°.

7. The head-mounted display device according to any one of claims 1 to 6, wherein the first optical member has an incident portion into which the image light from the display element is incident, an outgoing portion into which the incident image light is emitted toward the reflective member, and a reflective portion into which the image light incident from the incident portion is reflected toward the outgoing portion.

8. The head-mounted display device according to claim 7, wherein the first optical member is provided such that the angle θ2 formed by the image light incident on the reflecting portion and the image light reflected by the reflecting portion is 30° ≤ θ2 ≤ 90°.

9. The head-mounted display device according to any one of claims 7 and 8, wherein θ3 is the angle between the horizontal direction and the image light reflected by the reflecting member to the position of the pupil, L1 is the optical path length of the image light incident from the first optical member to the reflecting member, and L2 is the optical path length of the image light reflected by the reflecting member to the position of the pupil, and the distance Ln from the pupil to the first optical member in the horizontal direction satisfies the following formula. Ln=L2cosθ3−L1cos(θ3+θ1)

10. The head-mounted display device according to any one of claims 7 to 9, wherein the display element is provided such that the angle θ4 formed by the horizontal direction and the image light incident on the reflective portion of the first optical member is θ4 ≤ 10°.

11. A head-mounted display device according to any one of claims 1 to 10, further comprising a second optical member disposed between the first optical member and the display element.

12. A support member that supports the display element, the first optical member, and the reflective member, A head-mounted display device according to any one of claims 1 to 11, comprising: a mounting member connected to the support member and mounted on the user's head.

Images