Vehicle Lamp Lens Structure with Reflective Surface for Dual Light Paths
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Solution Overview
Problem
Existing lens structures for vehicle lamps are limited in their ability to utilize light from a single or group of light sources for multiple applications, such as both horizontal radiation and road surface illumination, which can hinder downsizing and performance improvement, as well as contribute to enhanced traffic safety and sustainable transportation.
Innovation Solution
A lens structure with a reflective surface at the upper portion of the light transmitter that totally reflects light traveling in a predetermined horizontal direction downward, allowing for both horizontal radiation and road surface illumination, and integrating a light guide to ensure smooth light transmission without reflection issues.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If light from one or one group of light sources is used for multiple applications (horizontal radiation and road surface illumination), then the versatility and efficiency of the lighting system is improved, but the device complexity increases due to the need for additional reflective surfaces and optical path management
Solution Approach 1:
The light transmitter is designed to perform multiple functions: it transmits light in a predetermined horizontal direction for horizontal radiation applications, while also working with the reflective surface to illuminate the road surface. This multi-functionality allows one light source to serve multiple purposes, improving versatility without requiring completely separate lighting systems for different applications
Solution Approach 2:
The reflective surface is positioned at an upper portion of the light transmitter and oriented at a specific angle to redirect light from the horizontal path into a downward path toward the road surface. This spatial arrangement in three dimensions enables the separation and management of different light paths, allowing multiple functions to coexist without excessive complexity
2Illumination intensity
If a reflective surface is added to enable road surface illumination, then the illumination coverage is improved, but the manufacturing complexity and precision requirements increase
Solution Approach 1:
The reflective surface and the light transmitter are integrated into a single structural unit, with the reflective surface positioned at an upper portion of the light transmitter. This merging reduces the number of separate components that need to be assembled and aligned, thereby simplifying the manufacturing process while still achieving the dual function of horizontal radiation and road surface illumination
Solution Approach 2:
The reflective surface is specifically positioned at an upper portion of the light transmitter rather than being distributed throughout the entire structure. This localized placement concentrates the optical function in a specific area, making the manufacturing process more manageable by focusing precision requirements on a defined region rather than the entire component
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
Enables the efficient use of light from a single or group of light sources for multiple applications, enhancing vehicle lamp design and mountability while improving visibility and safety by effectively illuminating both the road surface and surrounding areas.
Implementation Method 1
The reflective surface is provided at an upper portion of an end portion of the light transmitter in the predetermined horizontal direction and is configured to totally reflect the light travelling in the predetermined horizontal direction downward
Data Source
AI summary
To allow light from one or one group of light sources to be used for a plurality of applications. A lens structure for a vehicle lamp includes a light transmitter and a reflective surface. The light transmitter is configured to transmit light in a predetermined horizontal direction. The reflective surface is provided at an upper portion of an end portion of the light transmitter in the predetermined horizontal direction. A direction perpendicular to the reflective surface is inclined toward a direction opposite to the predetermined horizontal direction from a direction directly downward. The reflective surface totally reflects the light travelling in the predetermined horizontal direction downward. The light transmitted from below the reflective surface in the light transmitter in the predetermined horizontal direction radiates in the predetermined horizontal direction, and the light reflected by the reflective surface illuminates a road surface.