US 11,959,612 B2
Chromaticity variable type road projection lamp system for vehicle and method of controlling road projection
Byoung-Suk Ahn, Gwacheon-si (KR); and Joon-Bo Shim, Seoul (KR)
Assigned to HYUNDAI MOTOR COMPANY, Seoul (KR); and KIA CORPORATION, Seoul (KR)
Filed by HYUNDAI MOTOR COMPANY, Seoul (KR); and KIA CORPORATION, Seoul (KR)
Filed on Nov. 17, 2022, as Appl. No. 17/989,455.
Claims priority of application No. 10-2022-0051234 (KR), filed on Apr. 26, 2022.
Prior Publication US 2023/0341102 A1, Oct. 26, 2023
Int. Cl. F21S 41/143 (2018.01); F21S 41/25 (2018.01); F21S 41/39 (2018.01); F21S 41/675 (2018.01)
CPC F21S 41/675 (2018.01) [F21S 41/143 (2018.01); F21S 41/25 (2018.01); F21S 41/39 (2018.01)] 16 Claims
OG exemplary drawing
 
1. A road projection lamp system comprising:
a chromaticity variable road projection having a first projection light-emitting diode (LED) of a warm white color and a second projection LED of a cool white color disposed in a direction symmetrical to a mirror of a digital micromirror display (DMD), the chromaticity variable road projection being configured to generate a road surface radiation content by the warm white color light and the cool white color light at a tilting angle of the mirror to radiate the road surface radiation content to an imaging lens by a projection beam; and
a chromaticity variable lamp having a first lamp LED of a warm white color and a second lamp LED of a cool white color that are contrasted with road surface radiation content in chromaticity, and having the road surface radiation content added thereto.