Document validator subassembly
First Claim
Patent Images
1. A subassembly for a document validator comprising:
- a housing;
a light pipe core having a top diffusing surface, seated in the housing;
a light control layer associated with the top diffusing surface; and
a plurality of light-emitting diodes (LEDs) coupled to the housing, wherein at least one LED differs in wavelength from another LED.
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Accused Products
Abstract
A subassembly for a document validator. In an implementation, the subassembly includes a housing, a light pipe core seated in the housing, a light control layer and at least one light source. The apparatus may also include a prism structure layer between a top diffusing surface and the light control structure. The housing may also include at least one input light port on at least one end of the light pipe core.
31 Citations
39 Claims
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1. A subassembly for a document validator comprising:
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a housing;
a light pipe core having a top diffusing surface, seated in the housing;
a light control layer associated with the top diffusing surface; and
a plurality of light-emitting diodes (LEDs) coupled to the housing, wherein at least one LED differs in wavelength from another LED. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A document sensing arrangement comprising:
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a light source subassembly for positioning on a first side of a document passageway, the subassembly including a housing, a light pipe core seated in the housing and having a top diffusing surface, a light control layer associated with the top diffusing surface, and at least one light source coupled to the housing; and
at least one light sensor for positioning on a second side of the document passageway across from the light source subassembly. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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28. A method for illuminating a document in a document passageway comprising:
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providing a subassembly that includes a reflective housing, a light pipe core having a top diffusing surface, a light control layer and at least one light source; and
illuminating the document with a substantially rectangular beam of substantially homogenous light. - View Dependent Claims (29, 30, 31)
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32. A method of fabricating a light bar structure for a document validator subassembly comprising:
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fabricating a light pipe core to provide a light output across a document passageway;
fabricating a diffusing structure onto an output side of the core; and
applying a light control film to the diffusing structure. - View Dependent Claims (33, 34, 35)
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36. A method of fabricating a light bar structure comprising:
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fabricating a light pipe core to provide a light output across a document passageway;
fabricating a diffusing structure layer; and
fabricating a louver structure layer onto an output side of the core. - View Dependent Claims (37, 38, 39)
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Specification