Head-mounted display

1. A head-mounted display, comprising:

a main body that includes a display unit, wherein the display unit is configured to display an image in front of an eye of a user;

an operation unit that includes:

a buffer that is connected to the main body and deformable with respect to the main body;

a first detector configured to output a detection signal based on a bending movement when the buffer is deformed; and

a tab portion coupled to the buffer, wherein a strain gauge, inside the tab portion, is orthogonal to a first axis that passes through a first connection end and a second connection end of the buffer, wherein the first connection end couples the buffer to the main body and the second connection end couples the buffer to the tab portion; and

a controller configured to generate an image signal for generation of the image based on the detection signal and to output the image signal to the display unit,

wherein the operation unit is connected to a temple portion in the main body,

wherein the buffer includes a plurality of protrusion portions along a first axis direction, and wherein a distance from a center of the buffer to each of the plurality of protrusion portions is longer than a distance from the center of the buffer to parts other than the plurality of protrusion portions of the buffer,

wherein the bending movement of the buffer is a product of a length of the tab portion and a force exerted on the buffer by the user.

2. The head-mounted display according to claim 1 ,

wherein the buffer is along the first axis direction, and

wherein the tab portion is less easily deformed than the buffer.

3. The head-mounted display according to claim 1 , wherein the buffer includes a material more flexible than the main body.

4. The head-mounted display according to claim 1 , wherein the buffer is thinner than the tab portion as viewed in the first axis direction.

5. The head-mounted display according to claim 1 , wherein

the buffer is configured to be bent in a direction orthogonal to the first axis direction, and

the first detector further includes a bending deformation sensor unit configured to output the detection signal based on a strain based on the bending movement of the buffer.

6. The head-mounted display according to claim 5 ,

wherein the bending deformation sensor unit includes two pairs of strain gauges,

wherein the two pairs of strain gauges are opposed to each other in second and third axis directions,

wherein the second and third axis directions are orthogonal to the first axis direction, and

wherein the two pairs of strain gauges are arranged along the first axis.

7. The head-mounted display according to claim 1 , wherein

the tab portion is configured to deform by compression, and

the operation unit further includes a second detector that is provided to the tab portion, and wherein the second detector is configured to output a detection signal based on the deformation of the tab portion.

8. The head-mounted display according to claim 5 , wherein

the buffer is capable of being torsion-deformed around the first axis, and

the first detector further includes a torsion deformation sensor unit that is provided to the buffer and configured to output a torsion deformation detection signal based on torsion of the buffer.

9. The head-mounted display according to claim 1 , wherein the main body further includes the temple portion, wherein the temple portion includes:

a first end portion that is connected to the display unit, and

a second end portion that is configured to engage with an auricle of the user, and the operation unit is connected to the temple portion.

10. The head-mounted display according to claim 9 , wherein

the operation unit is connected to protrude in the first axis direction, and

the temple portion extends in a second axis direction that intersects the first axis direction.

11. The head-mounted display according to claim 9 , wherein the operation unit is connected between the first end portion and the second end portion of the temple portion.

12. The head-mounted display according to claim 9 , wherein the operation unit is connected to the second end portion of the temple portion.

13. The head-mounted display according to claim 1 , wherein each of the plurality of protrusion portions protrude at an acute angle.

14. The head-mounted display according to claim 1 , wherein each of the plurality of protrusion portions protrude at right angle.

15. The head-mounted display according to claim 1 , wherein the operation unit is connected to the temple portion, in the main body, with an angle between a first axis of the operation unit and an axis perpendicular to a display surface of the display unit equal to or less than 45°.