Vehicle Lamp Light Guide Using Curved Reflection for Slim Profiles
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Solution Overview
Problem
The challenge lies in achieving a slim structure for vehicle lamps while maintaining optical efficiency and preventing performance degradation, which is exacerbated by environmental regulations limiting power consumption increases.
Innovation Solution
A lamp design featuring a light source, a light guide with an input, reflection, and output areas, and an inner lens with specific reflection surfaces and focuses to enhance optical efficiency and maintain performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If the lamp structure is made slimmer, then the aesthetic aspect is improved, but the optical efficiency rapidly decreases
Solution Approach 1:
The light guide is designed to extend in the horizontal direction rather than vertically, utilizing the horizontal dimension to achieve the required optical path length. This allows the lamp to maintain a slim vertical profile while preserving optical efficiency through a horizontally extended reflection area.
Solution Approach 2:
The reflection area is designed with a curved surface that reflects light from the light source toward the lens. This curved geometry enables the light guide to achieve proper light directionality and optical efficiency within a compact, slim structure, avoiding the need for increased vertical height.
2Illumination intensity
If the power consumption is increased, then the optical efficiency is enhanced, but environmental regulations limit further power consumption increases
Solution Approach 1:
The patent replaces the conventional approach of increasing power consumption to improve optical efficiency with an optical design solution. By optimizing the light guide geometry, reflection surfaces, and lens configuration, the system achieves high optical efficiency through improved light path management rather than increased energy input.
Solution Approach 2:
The invention changes the geometric parameters of the light guide, including the shape and orientation of the reflection area and the positioning of the lens. These parameter optimizations allow the system to achieve superior optical efficiency without increasing power consumption, as the improved geometry maximizes light transmission and directionality.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The design achieves a slim structure with improved optical efficiency and reduced power consumption, enhancing aesthetic appeal without compromising performance.
Implementation Method 1
a reflection area connected to the input area, extending in one direction, and that totally reflects the light input from the input area
Implementation Method 2
a light guide provided on a front side of the light source
Data Source
AI summary
Disclosed is a lamp for a vehicle including a light source that outputs light, a light guide provided on a front side of the light source, and an inner lens provided on a front side of the light guide, the light guide includes an input area, into which the light is input from the light source, a reflection area connected to the input area, extending in one direction, and that totally reflects the light input from the input area, and an output area formed in an opposite direction to the input area with respect to the reflection area, connected to the reflection area, and in which the light reflected by the reflection area travels in a direction that faces the inner lens.