US-12624811-B2 - Vehicle lamp

US12624811B2US 12624811 B2US12624811 B2US 12624811B2US-12624811-B2

Abstract

A vehicle lamp including a light source part including a plurality of light sources configured to generate light, a light condensing lens part provided in front of the light source part, corresponding to the plurality of light sources, and including a plurality of light emitting surfaces from which the light is emitted, and a first emission lens part provided in front of the light condensing lens part, the first emission lens part being configured to emit the light incident from the plurality of light sources to form a plurality of light distribution patterns, the plurality of light distribution patterns being configured to overlap each other to form a high beam pattern, and the light emitting surfaces being configured to form the light distribution patterns into a shape vertically asymmetric with respect to an optical axis.

Inventors

Eun Bi KWON
Min Ji Jin

Assignees

HYUNDAI MOBIS CO., LTD.

Dates

Publication Date: 20260512
Application Date: 20241024
Priority Date: 20240326

Claims (9)

1 . A vehicle lamp, comprising: a light source part including a plurality of light sources configured to generate light; a light condensing lens part provided in front of the light source part, corresponding to the plurality of light sources, and including a plurality of light emitting surfaces from which the light is emitted; and a first emission lens part provided in front of the light condensing lens part, the first emission lens part being configured to emit the light incident from the plurality of light sources to form a plurality of light distribution patterns, wherein the plurality of light distribution patterns are configured to overlap each other to form a high beam pattern, and wherein the light emitting surfaces are configured to form the light distribution patterns into a shape vertically asymmetric with respect to an optical axis of the first emission lens part, such that an area of an upper portion of the light distribution patterns with regard to the optical axis is different from an area of a lower portion of the light distribution pattern with respect to the optical axis, wherein the first emission lens part includes a plurality of optical lenses arranged in a left-right direction and respectively corresponding to the plurality of light sources, wherein each of the optical lenses are configured to form a virtual focal point behind a corresponding one of the plurality of light emitting surfaces, and wherein a first distance between a vertical virtual focal point and an incident surface of the optical lens is greater than a second distance between a horizontal virtual focal point and the incident surface of the optical lens.
2 . The vehicle lamp of claim 1 , wherein the light condensing lens part further comprises: a plurality of light condensing lenses arranged in a left-right direction, wherein each of the plurality of light condensing lenses includes a plurality of unit lenses integrally formed and arranged in the left-right direction, and wherein each of the unit lenses includes: the light emitting surface; and a light incident surface which corresponds to the light emitting surface and into which the light emitted from the light source is incident.
3 . The vehicle lamp of claim 2 , wherein each light emitting surface is configured as a curved surface convex toward the front and includes a vertical curvature being different from a horizontal curvature of the light emitting surface.
4 . The vehicle lamp of claim 2 , further comprising: a second emission lens part provided in front of the first emission lens part and formed in a second shape different from a first shape of the first emission lens part, the second shape being convex and the first shape being segmented into a plurality of optical lenses, wherein the second emission lens part is configured to be bent rearward from one end to the other end with respect to the left-right direction.
5 . The vehicle lamp of claim 4 , wherein each of the optical lenses includes: the incident surface into which the light is incident from the light condensing lens; and an emission surface configured to emit the light incident into the incident surface to the second emission lens part, and wherein the emission surface is configured to be bent rearward from the other end to the one end with respect to the left-right direction.
6 . The vehicle lamp of claim 1 , wherein the plurality of light sources are arranged in a left-right direction and arranged on the same plane.
7 . A vehicle lamp, comprising: a light source part including a plurality of light sources configured to generate light; a light condensing lens part provided in front of the light source part, corresponding to the plurality of light sources, and including a plurality of light emitting surfaces from which the light is emitted; and a first emission lens part provided in front of the light condensing lens part, the first emission lens part being configured to emit the light incident from the plurality of light sources to form a plurality of light distribution patterns, wherein the plurality of light distribution patterns are configured to overlap each other to form a high beam pattern, and wherein the light emitting surfaces are configured to form the light distribution patterns into a shape vertically asymmetric with respect to an optical axis of the first emission lens part, such that an area of an upper portion of the light distribution patterns with regard to the optical axis is different from an area of a lower portion of the light distribution pattern with respect to the optical axis, wherein a virtual focal surface is a virtual plane passing through a virtual focal point that is a point formed behind the light condensing lens part as an optical path formed by optical characteristics of the first emission lens part extending from and perpendicular to the optical axis, wherein a virtual pattern is a virtual optical pattern formed on the virtual focal surface by a virtual optical path in which emitted light that is the light emitted from the first emission lens part extends to a rear side of the first emission lens part, and wherein the virtual pattern is formed asymmetrically in a vertical direction with respect to the virtual focal point.
8 . The vehicle lamp of claim 7 , wherein the virtual pattern is configured to be formed such that an upper area is smaller than a lower area with respect to the virtual focal point.
9 . The vehicle lamp of claim 7 , wherein the virtual pattern is configured to be formed symmetrically in a left-right direction with respect to the virtual focal point.

Description

CROSS-REFERENCE TO RELATED APPLICATION This application claims the benefit under 35 USC § 119(a) of priority to Korean Patent Application No. 10-2024-0041358, filed in the Korean Intellectual Property Office on Mar. 26, 2024, the entire disclosure of which is incorporated herein by reference for all purposes. TECHNICAL FIELD The present disclosure relates to a vehicle lamp. BACKGROUND Head lamps play an important role for safe traveling by forming a low beam pattern or a high beam pattern to secure forward vision of a driver during night traveling. In recent years, as the head lamps are gradually slimmed, slim lenses having a wide shape in a left-right direction are used for intelligent head lamps such as intelligent front-lighting systems (IFSs) or adaptive driving beam (ADB) lamps, which do not cause glare to a driver of a preceding vehicle. In general, a projection-type optical system that implements an intelligent head lamp includes a combination of a primary optical system that collects and distributes light near a focal point and a secondary optical system that forms the focal point, a light distribution pattern, and the like of the optical system. In the intelligent head lamp according to the related art, a reflector, a silicon rod optic, a general condensing lens, or the like is used as the primary optical system. However, when the reflector according to the related art is used, heat resistance problems occur due to miniaturization of the reflector. Accordingly, a heat sink and a fan are arranged vertically with respect to a light source, and thus a volume of the lamp increases. Further, when the silicon rod optic according to the related art is used as the primary optical system, light condensing efficiency decreases in a small lamp (a lamp having an opening of 20 mm or less). Further, when the general condensing lens is used as the primary optical system, because a horizontal focal point and a vertical focal point are the same, and thus a thickness of the lens increases and optical efficiency of the lens decreases. Thus, it is necessary to develop a technology that may implement a slim lamp by minimizing a volume while improving light distribution performance and optical efficiency of the intelligent head lamp. SUMMARY This Summary is provided to introduce a selection of concepts in a simplified form that are further described below in the Detailed Description. This Summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter. In a general aspect, here is provided a vehicle lamp including a light source part including a plurality of light sources configured to generate light, a light condensing lens part provided in front of the light source part, corresponding to the plurality of light sources, and including a plurality of light emitting surfaces from which the light is emitted, and a first emission lens part provided in front of the light condensing lens part, the first emission lens part being configured to emit the light incident from the plurality of light sources to form a plurality of light distribution patterns, the plurality of light distribution patterns being configured to overlap each other to form a high beam pattern, and the light emitting surfaces being configured to form the light distribution patterns into a shape vertically asymmetric with respect to an optical axis. A virtual focal surface may be a virtual plane passing through a virtual focal point that is a focal point formed behind the light condensing lens part as an optical path formed by optical characteristics of the first emission lens part extending from and perpendicular to the optical axis, a virtual pattern may be a virtual optical pattern formed on the virtual focal surface by a virtual optical path in which emitted light that is the light emitted from the first emission lens part extends to a rear side of the first emission lens part, and the virtual pattern may be formed asymmetrically in a vertical direction with respect to the virtual focal point. The virtual pattern may be configured to be formed such that an upper area is smaller than a lower area with respect to the virtual focal point. The virtual pattern may be configured to be formed symmetrically in a left-right direction with respect to the virtual focal point. The light condensing lens part may include a plurality of light condensing lenses arranged in a left-right direction, each of the plurality of light condensing lenses including a plurality of unit lenses integrally formed and arranged in the left-right direction, and each of the unit lenses including the light emitting surface and a light incident surface which corresponds to the light emitting surface and into which the light emitted from the light source is incident. The light emitting surface may be configured as a curved surface convex toward the front and may