High efficiency solid-state light source and methods of use and manufacture
First Claim
1. A lighting fixture, comprising:
- a housing including at least one fluid tube arranged therein to receive coolant, flow the coolant through the housing, and flow heated coolant out of the housing;
an array of solid-state light emitters including more than two modules arranged in a line, each module having a module array of multiple light emitters on a substrate, the array of solid-state light emitters mounted in the housing, where the solid-state light emitters are configured to produce ultraviolet (UV) light, where both the fluid tube and the array of solid-state light emitters are arranged inside the housing;
a heat sink attached to the housing, the heat sink arranged to dissipate heat from the array of solid-state light emitters;
a fan arranged to blow ambient air from outside the housing across the heat sink;
a transistor-based current source electrically coupled to the array of solid-state light emitters, the current source receiving power from a power supply, the power supply providing power to each module array separately; and
drive circuitry within the housing to control operation of the solid-state light emitters.
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Accused Products
Abstract
A high-intensity light source is formed by a micro array of a semiconductor light source such as a LEDs, laser diodes, or VCSEL placed densely on a liquid or gas cooled thermally conductive substrate. The semiconductor devices are typically attached by a joining process to electrically conductive patterns on the substrate, and driven by a microprocessor controlled power supply. An optic element is placed over the micro array to achieve improved directionality, intensity, and/or spectral purity of the output beam. The light module may be used for such processes as, for example, fluorescence, inspection and measurement, photopolymerzation, ionization, sterilization, debris removal, and other photochemical processes.
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Citations
20 Claims
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1. A lighting fixture, comprising:
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a housing including at least one fluid tube arranged therein to receive coolant, flow the coolant through the housing, and flow heated coolant out of the housing; an array of solid-state light emitters including more than two modules arranged in a line, each module having a module array of multiple light emitters on a substrate, the array of solid-state light emitters mounted in the housing, where the solid-state light emitters are configured to produce ultraviolet (UV) light, where both the fluid tube and the array of solid-state light emitters are arranged inside the housing; a heat sink attached to the housing, the heat sink arranged to dissipate heat from the array of solid-state light emitters; a fan arranged to blow ambient air from outside the housing across the heat sink; a transistor-based current source electrically coupled to the array of solid-state light emitters, the current source receiving power from a power supply, the power supply providing power to each module array separately; and drive circuitry within the housing to control operation of the solid-state light emitters. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of radiating an object, comprising:
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providing ultraviolet (UV) light through an array of solid-state light emitters including more than two modules arranged in a line, each module having a module array of multiple light emitters mounted on a substrate, the array of solid-state light emitters mounted in a housing; powering the array of solid-state light emitters through a transistor-based current source electrically coupled to the array of solid-state light emitters, the current source receiving power from a power supply; varying the power provided to each module array separately; flowing coolant through a fluid tube within the housing to transfer heat from the housing and to the coolant; controlling the flow of coolant through the fluid tube based on a sensed temperature of each module via a sensor coupled to each module; and blowing, via a fan, air across a heat sink attached to the housing, where the heat sink is arranged to dissipate heat from the array of solid-state light emitters. - View Dependent Claims (10, 11, 12, 13)
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14. A method for sterilizing, comprising:
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providing ultraviolet (UV) light through an array of solid-state light emitters including more than two modules, each module having a module array of multiple light emitters on a substrate, the array of solid-state light emitters mounted in a housing; powering the array of solid-state light emitters through a transistor-based current source electrically coupled to the array of solid-state light emitters, the current source receiving power from a power supply; controlling operation of the solid-state light emitters through drive circuitry; sterilizing a material with UV light output by the array of solid-state light emitters; cooling the housing via blowing, via a fan, air across a heat sink attached to the housing, where the fan is connected to the heat sink, and flowing coolant through a fluid tube within the housing to transfer heat from the housing and to the coolant; and controlling the flow of coolant through the fluid tube based on a sensed temperature of each module via a sensor coupled to each module. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification