US Patent No. 10,520,157

LASER BASED LIGHT SOURCE WITH TAILORED ILLUMINATION PATTERN


Patent No. 10,520,157
Issue Date December 31, 2019
Title Laser Based Light Source With Tailored Illumination Pattern
Inventorship Steffen Zozgornik, Leverkusen (DE)
Assignee Lumileds LLC, San Jose, CA (US)

Claim of US Patent No. 10,520,157

1. A laser-based light source for a vehicle headlight comprising:at least one laser, wherein the at least one laser is adapted to emit laser light,
a light converting device comprising a light converter, wherein the light converter is adapted to convert the laser light to converted light, wherein a peak emission wavelength of the converted light is in a longer wavelength range than a laser peak emission wavelength of the laser light, and
an optical arrangement, wherein the optical arrangement is adapted to provide a transformed focused image of the laser on the light converter of the light converting device, wherein the optical arrangement is further adapted to broaden the image of the laser on the light converter of the light converting device in at least a first direction perpendicular to an optical axis of the laser-based light source, and wherein the optical arrangement is further adapted to broaden the image of the laser in the first direction independent from a second direction, wherein the second direction is perpendicular to the optical axis and to the first direction, wherein the optical arrangement is adapted to broaden the image of the laser by providing at least two overlapping images of the laser on the light converter broadened in at least the first direction.