Head-mounted image display apparatus
First Claim
1. A head-mounted image display apparatus for viewing an image comprising:
- a main apparatus comprising image display means for forming an image, enlarging means for virtually enlarging an image, a frontal region support member which is to be positioned at the frontal region on the head, and an occipital region support member which is to be positioned at the occipital region on the head;
said main apparatus further comprising a lower gap positioned below an eye level when the display apparatus is mounted on the head, said gap providing an air flow and see-through area; and
securing means for holding the frontal region support member and the frontal region of the head in contact when the main apparatus is worn on the head.
1 Assignment
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Accused Products
Abstract
In a head-mounted image display apparatus (1) for viewing images on a liquid crystal display means virtually enlarged by an enlarging lens while worn on the head, main apparatus (10) comprises a front case (2), which is positioned at the frontal region side when said main apparatus is worn on the head, and a back case (3), which is positioned at the occipital region. In addition, an air bag (8), which inflates to cause the frontal region to contact a buffer pad affixed to the inside surface of the front case (2), is provided on the inside of the back case (3). The back case (3) is able to rotate on connecting member 5 to the front case (2). Adjustment mechanisms for moving the optical system in the pupil distance direction and in the direction of the optical axes is disposed inside main apparatus (10), and the knobs therefor are centrally disposed on the front of main apparatus (10).
47 Citations
38 Claims
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1. A head-mounted image display apparatus for viewing an image comprising:
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a main apparatus comprising image display means for forming an image, enlarging means for virtually enlarging an image, a frontal region support member which is to be positioned at the frontal region on the head, and an occipital region support member which is to be positioned at the occipital region on the head; said main apparatus further comprising a lower gap positioned below an eye level when the display apparatus is mounted on the head, said gap providing an air flow and see-through area; and securing means for holding the frontal region support member and the frontal region of the head in contact when the main apparatus is worn on the head. - View Dependent Claims (2, 3, 4, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38)
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30. The head-mounted image display apparatus according to claim 29 wherein the center-to-center distance between the right and left liquid crystal display elements is approximately 55 mm.
- 31. The head-mounted image display apparatus according to claim 29 wherein the enlarging means comprises a single magnifying lens, and each liquid crystal display module satisfies the equation
- space="preserve" listing-type="equation">30×
10.sup.-3 ≦
P≦
0.0021×
W.sub.2
where W2 is the horizontal width of the image display surface of the liquid crystal display element in millimeters, and P is the horizontal pixel pitch in millimeters; and the horizontal view angle of an enlarged virtual image is 30°
or greater. - space="preserve" listing-type="equation">30×
-
- 32. The head-mounted image display apparatus according to claim 29 wherein the equation
- space="preserve" listing-type="equation">P≦
0.0016×
W.sub.2
is satisfied. - space="preserve" listing-type="equation">P≦
-
a housing portion of an optical system containing the image display means and the enlarging means, and wherein the front region support member includes a frontal region support cover extending from this optical system portion following the shape of the frontal region of the head.
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a housing portion of an optical system containing the image display means and the enlarging means, and a dividing wall separating this optical system housing portion from the face side; and wherein the dividing wall includes a recessed member recessed toward the optical system housing portion in the area where the nose is positioned.
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5. A head-mounted image display apparatus for viewing an image comprising:
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a main apparatus comprising image display means for forming an image, enlarging means for enlarging an image, a frontal region support member which is to be positioned at the frontal region on the head, and an occipital region support member which is to be positioned at the occipital region on the head; and an inflating/deflating member, which can be switched between an inflated condition and a deflated condition, at least on the surface of at least one of the frontal region support member and the occipital region support member inside the main apparatus. - View Dependent Claims (6)
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23. The head-mounted image display apparatus according to 20 wherein the optical axes of the optical units are set to intersect on extensions of the optical axes to the front.
Specification