Head-mounted display capable of preventing damage of an image display apparatus

1. A head-mounted display, comprising:

a frame worn on a head of an observer;

an image display apparatus that is connected to a central part of the frame in a left-right direction and that includes

an image forming apparatus;

an optical member that is connected to the image forming apparatus and arranged in front of left and right eyes of the observer; and

a reinforcing member that includes restriction ribs,

wherein parts of the restriction ribs are inside restriction grooves in a lower surface of the frame; and

a rotation restricting unit that is arranged opposite to, across a specific gap in a front-rear direction, one of the optical member and an extended part that extends from the optical member.

2. The head-mounted display according to claim 1 , wherein the rotation restricting unit is arranged opposite to a face of the observer relative to at least one of the optical member and the extended part.

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

the reinforcing member is joined to the central part of the optical member, and

the rotation restricting unit is a part of the reinforcing member.

4. The head-mounted display according to claim 3 , wherein

a part of the optical member is disposed inside a groove portion that is in the reinforcing member, and

the rotation restricting unit is a side surface of the groove portion.

5. The head-mounted display according to claim 1 , wherein the rotation restricting unit is a part of the frame.

6. The head-mounted display according to claim 5 , wherein the rotation restricting unit is a rib on the frame.

7. The head-mounted display according to claim 1 , wherein when the optical member rotates about the central part, the rotation restricting unit and one of the optical member or the extended part arranged opposite to each other come into contact with each other.

8. The head-mounted display according to claim 1 , further comprising:

an up-down movement restricting unit that restricts a relative movement range of the rotation restricting unit and one of the optical member or the extended part in a vertical direction, in cooperation with at least one of a left side and a right side sandwiching a central part of the image display apparatus in a left-right direction.

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

the image display apparatus includes the reinforcing member that is joined to the central part of the optical member,

a part of the optical member is disposed inside a groove portion that is in the reinforcing member,

the rotation restricting unit is a side surface of the groove portion, and

the up-down movement restricting unit includes an engaging groove that is on one of the reinforcing member or the image forming apparatus, and

an engaging protrusion that is on end portion of the reinforcing member of the image forming apparatus.

10. The head-mounted display according to claim 1 , wherein the optical member includes

two left and right optical plates; and

a connection plate that connects the two left and right optical plates.

11. The head-mounted display according to claim 1 , wherein the optical member includes a light guide plate.

12. The head-mounted display according to claim 1 , wherein the optical member includes an optical reflection plate.

13. The head-mounted display according to claim 1 , wherein the optical member includes an optical transmission plate.

14. The head-mounted display according to claim 1 , wherein the optical member includes a lens.