Optical Touch Screen Assembly
First Claim
1. An optical touch panel comprising:
- a support defining a detection region;
an optical illumination assembly including;
at least two edge emitting optical light guides extending along adjacent portions of said detection region and having ends adjacent to one another; and
at least one mechanical coupling and optical coupling assembly comprising;
first and second mechanical coupling portions mechanically coupled to said ends of said optical light guides for mechanically retaining said ends;
at least one illumination source; and
first and second optical coupling portions optically coupled to said ends of said optical light guides for optically coupling said ends to said at least one illumination source;
at least one sensor assembly, operative to detect changes in the light received from said optical illumination assembly produced by the presence of an object in said detection region; and
detection circuitry receiving at least one output from said at least one sensor assembly and providing an output indication of the two dimensional location of object impingement in said detection region.
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Accused Products
Abstract
An optical touch panel including a support defining a detection region, an optical illumination assembly including at least two edge emitting optical light guides extending along adjacent portions of the detection region and having ends adjacent to one another and at least one mechanical coupling and optical coupling assembly, at least one sensor assembly, operative to detect changes in the light received from the optical illumination assembly produced by the presence of an object in the detection region and detection circuitry receiving at least one output from the at least one sensor assembly and providing an output indication of the two dimensional location of object impingement in the detection region.
34 Citations
20 Claims
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1. An optical touch panel comprising:
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a support defining a detection region; an optical illumination assembly including; at least two edge emitting optical light guides extending along adjacent portions of said detection region and having ends adjacent to one another; and at least one mechanical coupling and optical coupling assembly comprising; first and second mechanical coupling portions mechanically coupled to said ends of said optical light guides for mechanically retaining said ends; at least one illumination source; and first and second optical coupling portions optically coupled to said ends of said optical light guides for optically coupling said ends to said at least one illumination source; at least one sensor assembly, operative to detect changes in the light received from said optical illumination assembly produced by the presence of an object in said detection region; and detection circuitry receiving at least one output from said at least one sensor assembly and providing an output indication of the two dimensional location of object impingement in said detection region. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. Illumination, mechanical coupling and optical coupling apparatus for use with an optical touch panel, said touch panel including a support defining a detection region, said apparatus comprising:
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at least two edge emitting optical light guides extending along adjacent portions of said detection region and having ends adjacent to one another; and at least one mechanical coupling and optical coupling assembly including; first and second mechanical coupling portions mechanically coupled to said ends of said optical light guides for mechanically retaining said ends; at least one illumination source; and first and second optical coupling portions optically coupled to said ends of said optical light guides for optically coupling said ends to said at least one illumination source.
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20-27. -27. (canceled)
Specification