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US 11,448,380 B2Granted
Light-emitting assembly with transparent nanostructured electrochromic polymer color filter
AssigneeGM Global Technology Operations LLC
InventorsJonglee Park, Jodi M. Allen, Nicholas V. Friszell
Life of this patent
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Abstract
A light-emitting assembly configured to generate varied color light includes an assembly housing. The light-emitting assembly also includes a light filter element fixed relative to the assembly housing. The light filter element includes a plurality of transparent nanostructured ElectroChromic (TNEC) layers. When at least one of the plurality of TNEC layers is subjected to voltage, the subject TNEC layer(s) imparts a distinct reflective color to ambient light entering the light-emitting assembly. Such a light-emitting assembly may be specifically adapted for use on a motor vehicle.
Claims16
A light-emitting assembly configured to generate varied color light, the light-emitting assembly comprising:
- an assembly housing;
- a light filter element fixed relative to the assembly housing and having a plurality of transparent nanostructured ElectroChromic (TNEC) layers;
- wherein when at least one of the plurality of TNEC layers is subjected to voltage, the at least one of the plurality of TNEC layers imparts a distinct reflective color to ambient light entering the light-emitting assembly;
- and
- a white light emitting diode (LED) mounted to the assembly housing and configured to generate a beam of light, such that the beam of light generated by the white LED passes through the light filter element, wherein, when the at least one of the plurality of TNEC layers is subjected to voltage, the at least one of the plurality of TNEC layers imparts a distinct transmittance color to the beam of light generated by the white LED and passing through the respective light filter element;
- wherein the plurality of TNEC layers includes a first layer configured to impart a cyan color to the beam of light when subjected to a first predetermined magnitude of voltage, a second layer configured to impart a magenta color to the beam of light when subjected to a second predetermined magnitude of voltage, and a third layer configured to impart a yellow color to the beam of light when subjected to a third predetermined magnitude of voltage.
3 more elements
A motor vehicle comprising:
- a vehicle body arranged along a longitudinal axis and having a first vehicle body end configured to face oncoming ambient airflow when the vehicle is in motion relative to a road surface and a second vehicle body end opposing the first vehicle body end;
- and
- a light-emitting assembly mounted to the vehicle body, configured to generate varied color light, and having:
- an assembly housing;
- at least one light filter element fixed relative to the assembly housing, each light filter element having a plurality of transparent nanostructured ElectroChromic (TNEC) layers;
- wherein when at least one of the plurality of TNEC layers is subjected to voltage, the at least one of the plurality of TNEC layers imparts a distinct reflective color to ambient light entering the light-emitting assembly (thereby generating a color reflector);
- and
- a white light emitting diode (LED) mounted to the assembly housing and configured to generate a beam of light, such that the beam of light generated by the white LED passes through the light filter element, wherein, when the at least one of the plurality of TNEC layers is subjected to voltage, the at least one of the plurality of TNEC layers imparts a distinct transmittance color to the beam of light generated by the white LED and passing through the respective light filter element;
- wherein the plurality of TNEC layers includes a first layer configured to impart a cyan color to the beam of light when subjected to a first predetermined magnitude of voltage, a second layer configured to impart a magenta color to the beam of light when subjected to a second predetermined magnitude of voltage, and a third layer configured to impart a yellow color to the beam of light when subjected to a third predetermined magnitude of voltage;
- an electric power source;
- and
- an electronic controller configured to regulate the electric power source and generate voltage across the at least one of the plurality of TNEC layers of the at least one light filter element to thereby modify color of the ambient light entering the light-emitting assembly and reflecting off the at least one light filter element.
9 more elements
Dependencies are inferred from the claim text.