DUAL FILM LIGHT GUIDE FOR ILLUMINATING DISPLAYS
First Claim
1. A light guide comprising:
- an upper portion having top and bottom surfaces, said bottom surface of said upper portion being contoured; and
a lower portion having top and bottom surfaces, said top surface of said lower portion being contoured,wherein said upper portion is disposed over said lower portion such that said contoured bottom surface of said upper portion and said contoured top surface of said lower portion form cavities between the upper portion and the lower portion.
3 Assignments
0 Petitions
Accused Products
Abstract
A front light guide panel including a plurality of embedded surface features is provided. The front light panel is configured to deliver uniform illumination from an artificial light source disposed at one side of the font light panel to an array of display elements located behind the front light guide while allowing for the option of illumination from ambient lighting transmitted through the light guide panel. The surface embedded surface relief features create air pockets within the light guide panel. Light incident on the side surface of the light guide propagates though the light guide until it strikes an air/light material guide interface at one on the air pockets. The light is then turned by total internal reflection through a large angle such that it exits an output face disposed in front of the array of display elements.
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Citations
92 Claims
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1. A light guide comprising:
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an upper portion having top and bottom surfaces, said bottom surface of said upper portion being contoured; and a lower portion having top and bottom surfaces, said top surface of said lower portion being contoured, wherein said upper portion is disposed over said lower portion such that said contoured bottom surface of said upper portion and said contoured top surface of said lower portion form cavities between the upper portion and the lower portion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33)
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34. A light guide comprising:
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a cover layer having top and bottom surfaces; a film having top and bottom surfaces, said top surface of the film being contoured; and a light guide plate having top and bottom surfaces; wherein said cover layer is disposed over said film such that the bottom surface of the cover layer and the top contoured surface of the film form cavities between said cover layer and said film; and wherein said film is disposed between said cover layer and said light guide plate. - View Dependent Claims (35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 56, 57, 58, 59)
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60. A light guide comprising:
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a cover layer having a planar surface; a film having first and second surfaces, said first surface comprising a plurality of concave surface relief features and said second surface being planar; and a light guide plate having top and bottom planar surfaces; wherein said film is disposed between said cover layer and said light guide plate, wherein said film is disposed on said light guide plate such that said planar second surface is adjacent said light guide plate and said concave surface relief features of said first surface face away from said light guide plate; and wherein said cover layer is disposed adjacent said film such that the planar surface of said cover layer and the concave surface features of said film form cavities between said cover layer and said film. - View Dependent Claims (53, 54, 55, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82)
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83. A light guide comprising:
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a first means for guiding light; and a second mean for guiding light, said first and second light guiding means having respective means for mating said first and second light guiding means together, wherein said mating means for both said first and second light guiding means is contoured such that when said first and second light guiding means are mated together, means for reflecting light are formed therebetween. - View Dependent Claims (84, 85, 86)
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87. A light guide comprising:
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a first means for guiding light; a second means for guiding light; and means for covering said second light guiding mean disposed such that said second light guiding means is between said covering means and said first light guiding means, said second light guiding means and said covering means having respective means for mating said second light guiding means and said covering means together, wherein said mating means for said second light guiding means is contoured such that when said second light guiding means and said covering means are mated together, means for reflecting light are formed therebetween. - View Dependent Claims (88, 89, 90)
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- 91. The light guide of claim 91, wherein said mating means for said second light guiding means comprises a surface on said film and said mating means for said covering means comprises a surface on said covering layer.
Specification