OPTICAL MEMBER AND VIRTUAL IMAGE DISPLAY APPARATUS
First Claim
1. An optical member comprising:
- a first surface and a second surface which face each other and each of which is formed of a free-form surface that directs light from a video image device toward a viewer'"'"'s eye to allow the viewer to visually recognize an image;
a sideways end portion provided between the first surface and the second surface; and
a protruding rib provided along at least part of the sideways end portion.
1 Assignment
0 Petitions
Accused Products
Abstract
According to a light guide device that is an optical member, since a protruding rib extending along a sideways end portion is provided, first and second surfaces including a first surface and other free-form surfaces can be aligned with another member that forms, for example, a virtual image display apparatus with high precision when the light guide device is assembled to the other member by using part of the protruding rib, which is provided separately from the first and second surfaces, as a reference, whereby an optical function of the light guide device in the virtual image display apparatus or any other apparatus can be ensured. Further, an optical main body provided with the first and second surfaces has a shape similar to that of glasses and hence has a good external appearance.
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Citations
23 Claims
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1. An optical member comprising:
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a first surface and a second surface which face each other and each of which is formed of a free-form surface that directs light from a video image device toward a viewer'"'"'s eye to allow the viewer to visually recognize an image; a sideways end portion provided between the first surface and the second surface; and a protruding rib provided along at least part of the sideways end portion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 22, 23)
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20. An optical member comprising
a first surface and a second surface which face each other and each of which is formed of a free-form surface that directs light from a video image device toward a viewer'"'"'s eye to allow the viewer to visually recognize an image, wherein each of the first and second surfaces is formed of a curved surface having an oval contour.
Specification