Light guide and display device incorporating the same
First Claim
1. A light guide, comprising:
- a first surface for receiving a light beam;
a second surface for guiding the light beam, wherein the second surface is opposite to the first surface and has an irregular structure for reducing a luminous flux of a total reflection of the light beam projected on the second surface; and
a lateral surface for connecting the edges of the first surface and the second surface, wherein the luminous flux of the light beam from the first surface to the second surface is larger than the luminous flux of the light beam from the first surface and to the lateral surface.
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Accused Products
Abstract
A light guide and a display device incorporating the same are provided. The light guide includes a first surface, a second surface and a lateral surface. The first surface is for receiving a light beam. The second surface is for guiding the light beam and is opposite to the first surface. The second surface has an irregular structure for reducing a luminous flux of a total reflection of the light beam projected on the second surface. The lateral surface is for connecting the edges of the first surface and the second surface. Meanwhile, the luminous flux of the light beam from the first surface to the second surface is larger than the luminous flux of the light beam from the first surface to the lateral surface.
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Citations
14 Claims
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1. A light guide, comprising:
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a first surface for receiving a light beam; a second surface for guiding the light beam, wherein the second surface is opposite to the first surface and has an irregular structure for reducing a luminous flux of a total reflection of the light beam projected on the second surface; and a lateral surface for connecting the edges of the first surface and the second surface, wherein the luminous flux of the light beam from the first surface to the second surface is larger than the luminous flux of the light beam from the first surface and to the lateral surface. - View Dependent Claims (2, 3, 4, 5, 6)
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7. a display device, comprising:
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a housing; a screen disposed on the front surface of the housing; a light guide for guiding a light beam, the light guide comprising; a first surface for receiving the light beam, wherein the first surface is disposed on the front surface of the housing; a second surface for guiding the light beam, wherein the second surface is opposite to the first surface and has an irregular structure for reducing a luminous flux of a total reflection of the light beam projected on the second surface; and a lateral surface for connecting the edges of the first surface and the second surface, wherein the luminous flux of the light beam from the first surface to the second surface is larger than the luminous flux of the light beam from the first surface to the lateral surface; a light sensor disposed in the housing and opposite to the second surface, wherein the light sensor is for receiving the light beam guided by the second surface and outputting a signal accordingly; and a controlling circuit for coupling the screen and the light sensor and adjusting the screen brightness according to the signal. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14)
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Specification