Color mixing illumination device
AssigneeRebo Lighting & Electronics, LLC
InventorTodd Irgang
Life of this patent
Estimating the term…
Abstract
A color mixing illumination device and method of using the same. The color mixing illumination device includes a printed circuit board (PCB) having a PCB surface with a reflective portion; a multi-color light source attached to the PCB, such as a red-green-blue light emitting diode (RGB LED); and a reflector with a reflector surface. The PCB surface and the reflector surface are configured to mix light from the multi-color light source in a mixing region and then direct mixed light out of the device from an exit region. In one embodiment, the color mixing illumination device is a multi-color indicator lamp for a vehicle.
Claims19
A color mixing illumination device, comprising:
- a printed circuit board (PCB) having a PCB surface with a reflective portion;
- a light source mounted to the PCB and having a first color emitting site and a second color emitting site, wherein the first color emitting site is configured to emit light of a first wavelength and the second color emitting site is configured to emit light of a second wavelength that is different than the first wavelength;
- a lens;
- and
- a reflector having a reflector surface with a first reflective portion, a second reflective portion, and a junction separating the first and second reflective portions, the first reflective portion of the reflector surface faces the reflective portion of the PCB surface to at least partially define a mixing region therebetween, the second reflective portion of the reflector surface faces the lens to at least partially define an exit region therebetween, wherein the PCB surface and the reflector surface are configured to mix light from the first color emitting site and the second color emitting site in the mixing region and to direct mixed light to the lens in the exit region.
A color mixing illumination device, comprising:
- a printed circuit board (PCB) having a PCB surface with a reflective portion;
- a light source mounted to the PCB, wherein the light source includes a first color emitting site, a second color emitting site, and a third color emitting site, wherein the first color emitting site is configured to emit light of a first wavelength, the second color emitting site is configured to emit light of a second wavelength that is different than the first wavelength, and the third color emitting site is configured to emit light of a third wavelength that is different than the first wavelength and the second wavelength;
- and
- a reflector having a first reflective portion and a second reflective portion, wherein the first reflective portion includes a curved wall adjacent the PCB and a transition wall extending to an exit wall at the second reflective portion, wherein the reflector is configured to mix light from the first color emitting site, the second color emitting site, and the third color emitting site between the reflective portion of the PCB and at least one of the curved wall or the transition wall of the reflector and to direct at least some of the mixed light from the first color emitting site, the second color emitting site, and the third color emitting site to the exit wall so that the mixed light exits out through the color mixing illumination device.
A method of using a color mixing illumination device, the color mixing illumination device comprising a printed circuit board (PCB) having a PCB surface with a reflective portion, a light source mounted to the PCB and having a first color emitting site and a second color emitting site, and a reflector having a first reflective portion, a second reflective portion, and a junction separating the first and second reflective portions, the first reflective portion faces the reflective portion of the PCB surface to at least partially define a mixing region therebetween, the second reflective portion faces the lens to at least partially define an exit region therebetween, the method comprising the steps of:
- emitting light of a first wavelength from the first color emitting site;
- emitting light of a second wavelength from the second color emitting site;
- mixing light from the first color emitting site and the second color emitting site in the mixing region;
- and
- directing mixed light from the mixing region to the exit region.
Dependencies are inferred from the claim text.