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US 10,422,520 B2Granted
Lamp color temperature stability in an automated luminaire
AssigneeRobe Lighting s.r.o.
InventorsPavel Jurik, Josef Valchar
Life of this patent
Estimating the term…
Abstract
Described is dynamic control of the temperature of the envelope of an HID lamp in order to stabilize the output color temperature of the lamp. As the lamp power is changed, or environmental factors alter the lamp envelope temperature, the system senses these changes and adjusts the lamp cooling systems so as to move the lamp envelope temperature back to the desired point.
Claims17
An enclosure, comprising:
- a light source within the enclosure;
- one or more fans configured to control corresponding flows of air into or out of the enclosure;
- one or more temperature sensors located within the enclosure and configured to monitor one or more corresponding temperatures inside the enclosure;
- and
- a controller coupled to the one or more fans and the one or more temperature sensors, and configured to proactively adjust one or more speeds of the one or more fans to maintain a constant light output color temperature, based on one or more of the temperatures monitored by the one or more temperature sensors and a temperature change predicted to result from a planned lamp power change in a preprogrammed light show.
2 more elements
An automated luminaire, comprising:
- a light source;
- an enclosure containing the light source comprising:
- a transparent window configured to permit light emitted by the light source to exit the enclosure;
- and
- one or more fans configured to control corresponding flows of air into or out of the enclosure;
- one or more temperature sensors located within the enclosure and configured to monitor one or more corresponding temperatures inside the enclosure;
- and
- a controller coupled to the one or more fans and the one or more temperature sensors, and configured to adjust one or more speeds of the one or more fans to maintain a constant light output color temperature, based on one or more of the temperatures monitored by the one or more temperature sensors and information relating to a planned lamp power in a preprogrammed light show, the controller further configured to recognize a blackout condition of the luminaire, reduce lamp power to the light source in response to recognizing the blackout condition, and lower one or more speeds of the one or more fans to maintain the constant light output color temperature during the blackout condition.
5 more elements
Dependencies are inferred from the claim text.