Chromaticity variable type road projection lamp system for vehicle and method of controlling road projection
AssigneesHyundai Motor Company, Kia Corporation
InventorsByoung-Suk Ahn, Joon-Bo Shim
Life of this patent
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Abstract
A chromaticity variable type road projection lamp system applied to a vehicle is composed of a chromaticity variable lamp that radiates a road surface radiation content, which is generated by reflecting the lights emitted from a first projection light-emitting diode (LED) of a warm white color and a second projection LED of a cool white color disposed in the direction symmetrical to a DMD at the tilting angle, with a projection beam from a chromaticity variable road projection, and radiates the low beam by comparing the warm white color of the first lamp LED and the cool white color of the second lamp LED with the road surface radiation content in chromaticity.
Claims16
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.
A vehicle comprising:
- a road projection lamp system forming a predetermined tilting angle on a mirror of a digital micromirror display (DMD), radiating a road surface radiation content, which is generated by reflecting the lights emitted from 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 the DMD at the tilting angle, with a projection beam from a chromaticity variable road projection, and radiating a low beam in which the warm white color of the first lamp LED and the cool white color of the second lamp LED are contrasted with the road surface radiation content in chromaticity from a chromaticity variable lamp;
- and
- a lamp controller forming the road surface radiation content as a fixed symbol image pattern or a variable symbol image pattern by controlling the tilting angle.
A method of controlling a road projection, the method comprising:
- lighting a chromaticity variable road projection in a state in which a low beam by a warm white color and a cool white color of a chromaticity variable lamp is lit;
- controlling a DMD that controls a mirror of a digital micromirror display (DMD) at a predetermined tilting angle by a lamp controller so that the warm white color light and the cool white color light of the chromaticity variable road projection are generated as a road surface radiation content contrasted thereto in chromaticity at the titling angle;
- performing a content mode that radiates the road surface radiation content with a projection beam from the chromaticity variable road projection in a mirror fixing mode or a mirror conversion mode;
- and
- radiating the projection beam as the low beam from the chromaticity variable lamp.
Dependencies are inferred from the claim text.