LIGHT REFLECTING MEMBER, LIGHT BEAM EXTENSION DEVICE, IMAGE DISPLAY DEVICE, AND OPTICAL DEVICE
1 Assignment
0 Petitions
Accused Products
Abstract
An image display device includes an image generating device, a light guide unit which includes a light guide plate and first and second deflection sections, and a light beam extension device which extends light incident from the image generating device, along a Z direction when an incident direction of light incident on the light guide plate is set to be an X direction and a direction of propagation of light in the light guide plate is set to be a Y direction, and emits the light to the light guide unit, wherein the light beam extension device includes a first reflecting mirror on which light from the image generating device is incident, and a second reflecting mirror which emits light incident from the first reflecting mirror to the light guide unit, and each of the first and second reflecting mirrors has a light reflecting surface having a sawtooth-shaped cross-sectional shape.
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Citations
42 Claims
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1-20. -20. (canceled)
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21. An image display device comprising:
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an image generating device; a light guide unit arranged to guide light provided by the image generating device and to emit the guided light; and a reflecting mirror disposed in an optical path between the image generating device and the light guide unit, wherein at least a portion of a cross-section of the reflecting mirror has a substantially sawtooth shape, and wherein at least two sides of the substantially sawtooth shape have different lengths. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42)
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Specification