Patent ID: 11859790
Assignee: VALEO NORTH AMERICA, INC.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC F | IPC F

Claim 6:
7. An automotive lighting apparatus comprising:
a plurality of light sources that emits light at a predetermined wavelength;
a light guide comprising:
an elongated body spanning the light sources, the body including:
an entrance face at which the light from the light sources is admitted into the light guide, wherein the entrance face includes a pattern of protuberances that disperse light;
an exit face at which the light from the light sources emanates from the light guide, with the exit face being opposite the entrance face;
an inboard side wall and an outboard side wall extending between the entrance face and the exit face, with a sidewall distance in the inboard sidewall from the entrance face to the exit face being longer than a perpendicular distance between the inboard sidewall and the outboard sidewall in the exit face and with the entrance face, the exit face, the inboard side wall and the outboard side wall enclosing a medium that includes a colorant so that the medium meets a color criterion while the medium is minimally absorptive at the wavelength of the light sources, wherein the colorant formed in the light guide includes a concentration so that the medium meets the color criterion and has a molar extinction coefficient that is a minimal value at the wavelength of the light with respect to at least one other colorant by which the medium would meet the color criterion, with substantially all the light travelling the sidewall distance; and

a reflector interposed between the light sources and the light guide, the reflector reflecting the light from the light sources to converge within the medium.