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US 10,856,384 B2Granted
Lighting system with configurable color temperatures
AssigneeABL IP Holding LLC
InventorsFeng Chen, Towfiq M. Chowdhury
Life of this patent
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Abstract
Certain aspects involve lighting systems in which the color temperature of the illumination can be selectively modified. In one example, a lighting system can include a set of light sources. The lighting system can also include a switching device. The switching device can connect different light sources from the set into light-source combinations having different color temperatures, respectively. A light-source combination can include two of the light sources connected in series.
Claims11
A lighting system comprising:
- a set of light sources;
- and
- a switching device configured for connecting different light sources from the set of light sources into light-source combinations having different color temperatures, respectively, wherein each light-source combination:
- comprises two of the light sources connected in series, and
- is configured for emitting light at a target lumen output common to the light-source combinations,
- wherein:
- the lighting system is connectable to a device that provides or regulates power to the set of light sources,
- a first light-source combination comprises a first light source from the set of light sources and a second light source from the set of light sources,
- a second light-source combination comprises the first light source and a third light source from the set of light sources,
- a third light-source combination comprises the first light source and a fourth light source from the set of light sources,
- the switching device is connectable to the device that provides or regulates the power (i) outside of a path that includes the second light source, (ii) in series with the third light source, and (iii) in series with the fourth light source,
- the switching device has a first configuration in which an open path exists between the third light source and the device that provides or regulates the power,
- the switching device has a second configuration in which (i) a closed path exists between the third light source and the device that provides or regulates the power and (ii) an open path exists between the fourth light source and the device that provides or regulates the power,
- the switching device has a third configuration in which (i) a closed path exists between the fourth light source and the device that provides or regulates the power and (ii) the open path exists between the third light source and the device that provides or regulates the power.
11 more elements
A lighting system comprising:
- a first light-source combination comprising a first light source in series with a second light source, wherein the first light-source combination is configured for emitting light at a first color temperature;
- a second light-source combination comprising the second light source in series with a third light source, wherein the second light-source combination is configured for emitting light at a second color temperature different from the first color temperature;
- a third light-source combination comprising the third light source in series with a fourth light source;
- and
- a switching device positioned (i) between the first light source and the second light source, (ii) between the second light source and the third light source and (iii) between the third light source and the fourth light source, the switching device having (i) a first configuration connecting the first light source and the second light source, (ii) a second configuration connecting the second light source and the third light source, a third configuration connecting the third light source and the fourth light source,
- wherein the first configuration of the switching device causes (i) a first open path between the third light source and a current driver and (ii) a first closed path that includes the first light source, the second light source, and the current driver,
- wherein the second configuration of the switching device causes (i) a second open path between the first light source and the current driver and (ii) a second closed path that includes the second light source, the third light source, and the current driver,
- wherein the third configuration of the switching device causes (i) a third open path between the second light source and the current driver and (ii) a third closed path that includes the third light source, the fourth light source, and the current driver.
5 more elements
Dependencies are inferred from the claim text.