Light Maintenance System
OwnerThomas R. Rogers, IIIinventor
Life of this patent
Estimating the term…
Abstract
Lighting systems maintain the quantitative and/or qualitative output of a light as the light ages, while also limiting the power consumed by the light, for example by increasing this power limit as the light ages. Some lighting systems compensate for reduction of spectral output as the light ages by activating compensating light emitting diodes within a light, which compensating light emitting diodes produce a spectral output that supplements the light's output at the frequencies at which spectrum has been reduced. Some lighting systems cap the total power of consumed by the light even when compensating for loss of spectral output.
Claims20
A lighting system comprising:
- a lighting fixture having an inherent decreasing light output that diminishes with time at constant power, the lighting fixture further having a power input for controlling the light output;
- and
- a controller operably coupled with the power input of the lighting fixture, the controller being configured to maintain a changeable power cap to the power input, the controller being configured to increase the power cap to increase power to the power input, the increase in the power cap causing the lighting fixture to increase light output, the increase in the power cap being a function of the inherent decreasing light output of the lighting fixture over time.
A lighting system comprising:
- a lighting fixture having a plurality of primary LEDs and a plurality of compensation LEDs, the primary LEDs having a specified spectral output, the spectral output of the primary LEDs having an inherent diminishing spectral output;
- and
- a controller operably coupled with the lighting fixture, the controller being configured to selectively activate at least one of the compensation LEDs to produce a combined spectral output of the primary LEDs and the at least one compensation LED, the controller being configured to selectively activate the at least one compensation LED as a function of the inherent diminishing spectral output of the plurality of primary LEDs and the specified spectral output.
A lighting system comprising:
- a lighting fixture having a plurality of primary LEDs and a plurality of compensation LEDs, the primary LEDs having a specified spectral output, the spectral output of the primary LEDs having an inherent diminishing spectral output,
- the lighting fixture also having an inherent decreasing light output that diminishes with time at constant power, the lighting fixture further having a power input for controlling the light output;
- and
- a controller operably coupled with the lighting fixture, the controller being configured to selectively activate at least one of the compensation LEDs to produce a combined spectral output of the primary LEDs and the at least one compensation LED, the controller being configured to selectively activate the at least one compensation LED as a function of the inherent diminishing spectral output of the plurality of primary LEDs and the specified spectral output,
- the controller also configured to maintain a changeable power cap to the power input and configured to increase the power cap to increase power to the power input, the increase in the power cap causing the lighting fixture to increase light output, the increase in the power cap being a function of the inherent decreasing light output of the lighting fixture over time.
Dependencies are inferred from the claim text.