Lens heating systems and methods for an LED lighting system
First Claim
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1. A heating system for heating the lens of a lighting system, the heating system comprising:
- a substantially clear thermoplastic substrate;
a conductive ink or film circuit including traces that are generally equal in length, positioned on the thermoplastic substrate to heat the thermoplastic substrate;
a lens heater circuit, with a lens heater controller operatively coupled to the lens heater circuit;
a busbar disposed on a non-power connect side of the heating system and configured to connect the traces; and
wherein a heating output of the conductive ink or film circuit is regulated based upon a sensed temperature of the conductive ink or film circuit.
1 Assignment
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Accused Products
Abstract
Systems and methods for lighting system lens heating are described. The systems and methods include a substantially clear thermoplastic substrate; and a conductive ink or film circuit on the thermoplastic substrate.
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Citations
19 Claims
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1. A heating system for heating the lens of a lighting system, the heating system comprising:
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a substantially clear thermoplastic substrate; a conductive ink or film circuit including traces that are generally equal in length, positioned on the thermoplastic substrate to heat the thermoplastic substrate; a lens heater circuit, with a lens heater controller operatively coupled to the lens heater circuit; a busbar disposed on a non-power connect side of the heating system and configured to connect the traces; and wherein a heating output of the conductive ink or film circuit is regulated based upon a sensed temperature of the conductive ink or film circuit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An LED lighting system having a heated lens, the LED lighting system comprising:
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a housing, the housing including a base coupled to a lens, the lens having an interior lens side and an exterior lens side; at least one LED positioned within the base and spaced apart from the lens, the at least one LED positioned within the base to provide illumination through the lens; a lens heater controller; a lens heater circuit operatively coupled to the lens heater controller; a substantially clear thermoplastic substrate positioned on at least one of the interior lens side and the exterior lens side; a conductive ink or film circuit, including traces that are generally equal in length, on the thermoplastic substrate to heat the thermoplastic substrate, the conductive ink or film operatively coupled to the lens heater circuit; and a busbar positioned on a non-power connect side within the housing, the traces connected to the busbar. - View Dependent Claims (13)
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14. A method for heating a lens of a lighting system, the method comprising:
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applying a conductive ink or film circuit, including traces that are generally equal in length, on a substantially clear thermoplastic substrate; applying the conductive ink or film circuit on the substantially clear thermoplastic substrate to at least one of an interior lens side and an exterior lens side; connecting the traces via a busbar on a non-power connect portion of the lighting system; and applying a controlled power to the conductive ink or film circuit to heat the lens. - View Dependent Claims (15, 16, 17, 18, 19)
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Specification