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US 9,313,854 B2Granted
LED drive current adjustment for irradiance step response output
AssigneePhoseon Technology, Inc.
InventorsOgnyan Moore, Paul Eddy, Jeff Smith
Life of this patent
Estimating the term…
Abstract
A system and method for operating one or more light emitting devices is disclosed. In one example, the intensity of light provided by the one or more light emitting devices is adjusted responsive to a temperature of the one or more light emitting device. The light is adjusted via modifying a current supplied to the one or more light emitting devices.
Claims18
A system for operating one or more light emitting devices, comprising:
- a voltage regulator including a feedback input, the voltage regulator in electrical communication with the one or more light emitting devices;
- and
- a controller including non-transitory instructions to provide a linearized correction to current supplied to the one or more light emitting devices, where the linearized correction is a correction based on normalized light output and lighting device temperature.
A method for operating one or more light emitting devices, comprising:
- selecting a current that corresponds to a desired irradiance output of the one or more light emitting devices in response to a change in the desired irradiance output of the one or more light emitting devices;
- and
- outputting the current modified via a linearized current adjustment to the one or more light emitting devices, where the linearized current adjustment is based on a slope and offset.
A method for operating one or more light emitting devices, comprising:
- in response to a change in a temperature of the one or more light emitting devices being less than a threshold, continuing to monitor the temperature of the one or more light emitting devices and not revising a current supplied to the one or more light emitting devices;
- and
- in response to a change in a temperature of the one or more light emitting devices being greater than the threshold, revising the current supplied to the one or more light emitting devices in response to a temperature based linearized current adjustment.
Dependencies are inferred from the claim text.