Apparatus for preventing formation of condensation on an electrooptical scanner window
First Claim
1. A portable, handheld scanner having an electro-optical element for scanning a one or two-dimensional symbology, comprising:
- a housing having an enclosed compartment containing said electro-optical element, said compartment further having a window permitting said electro-optical element to collect reflected light therethrough; and
a heating element coupled to at least a portion of an inner surface of said window, wherein said heating element precludes condensation from forming on said inner surface of said window.
2 Assignments
0 Petitions
Accused Products
Abstract
A scanner for scanning a one or two-dimensional bar code symbology is provided that effectively prevents condensation from forming on the protective window. The scanner comprises a housing having an electro-optical element and a window permitting the electro-optical element to collect reflected light therethrough. A heating element is coupled to at least a peripheral portion of the inner surface of the window. Application of an electrical current to the heating element heats the window and precludes condensation from forming on the inner surface of the window. The heating element may further comprise a resistive element having an adhesive layer permitting attachment to the inner surface of the window. The heating element would be further compatible with operation of conventional electro-optical elements, such as a charge coupled device or a laser.
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Citations
16 Claims
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1. A portable, handheld scanner having an electro-optical element for scanning a one or two-dimensional symbology, comprising:
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a housing having an enclosed compartment containing said electro-optical element, said compartment further having a window permitting said electro-optical element to collect reflected light therethrough; and a heating element coupled to at least a portion of an inner surface of said window, wherein said heating element precludes condensation from forming on said inner surface of said window.
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2. A portable, handheld scanner having an electro-optical element for scanning a one or two-dimensional symbology, comprising:
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a housing having an enclosed compartment containing said electro-optical element, said compartment further having a window permitting said electro-optical element to collect reflected light therethrough; and means for precluding condensation from forming on an inner surface of said window, wherein said condensation precluding means further comprises a heating element coupled to at least a portion of said inner surface of said window. - View Dependent Claims (3, 4, 5, 6)
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7. In a portable, handheld scanner used for scanning a one or two-dimensional bar code symbology, a defogging apparatus comprises:
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a housing having an electro-optical element and a window permitting said electro-optical element to collect reflected light therethrough; and a heating element coupled to at least a peripheral portion of said inner surface of said window; wherein, application of an electrical current to said heating element heats said window and precludes condensation from forming on said inner surface of said window. - View Dependent Claims (8, 9, 10, 11)
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12. A portable, handheld symbology scanning apparatus comprising:
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a housing having an enclosed compartment containing an electro-optical element, said compartment further having a window permitting said electro-optical element to collect reflected light therethrough; and means for precluding condensation from forming on an inner surface of said window, said condensation precluding means further comprising a heating element coupled to at least a portion of said inner surface of said window. - View Dependent Claims (13, 14, 15, 16)
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Specification