Tilted Vehicle Lamp Optics for Beam Pattern Control
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Solution Overview
Problem
Existing vehicle lamps face challenges in forming optimal beam patterns due to complex configurations and increased costs when separate optical systems are used to achieve sufficient viewing distance and range, and the direction of light irradiation changes with tilted installations.
Innovation Solution
A lamp module with a light source unit and optical unit that includes incident and exit lenses, where the optical unit is tilted and divided into sections with different light distribution characteristics, allowing for the formation of an optimal beam pattern even when installed in a tilted manner.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate optical systems are used to achieve sufficient viewing distance and viewing range, then light distribution characteristics are satisfied, but device complexity and cost increase
Solution Approach 1:
The patent combines multiple optical functions (viewing distance and viewing range control) into a single integrated optical system rather than using separate optical systems. The single optical system includes a light source unit and an optical unit with multiple lenses that work together to achieve both viewing distance and viewing range requirements, thereby reducing configuration complexity while maintaining light distribution characteristics.
Solution Approach 2:
The optical unit is designed to perform multiple functions simultaneously: it controls both viewing distance and viewing range, and can adapt to different installation angles. The plurality of lenses within the optical unit work together to achieve various light distribution patterns, making the system universal and multi-functional rather than requiring separate specialized systems.
2Adaptability or versatility
If the optical system is installed in a tilted manner according to vehicle body line, then vehicle integration is improved, but beam pattern formation becomes more difficult
Solution Approach 1:
The patent introduces an inclined optical unit that can be installed at different angles according to vehicle body lines. The optical unit is designed with an inclination angle relative to the light source unit, allowing dynamic adaptation to different installation environments while maintaining proper beam pattern formation. This dynamic design enables the system to adjust to tilted installations without compromising light distribution characteristics.
Solution Approach 2:
The optical unit is designed with an asymmetric inclined structure rather than a symmetric perpendicular arrangement. This asymmetric design allows the optical unit to be installed at specific inclination angles that match vehicle body lines, improving installation adaptability while the internal lens arrangement compensates for the tilt to maintain proper beam patterns.
3Device complexity
If a single optical system is used instead of separate optical systems, then device complexity is reduced, but achieving optimal beam pattern becomes more challenging
Solution Approach 1:
The optical unit is segmented into multiple functional lenses (first lens, second lens, third lens) with different characteristics. Each lens segment performs a specific function in controlling light distribution, and their combined action achieves the optimal beam pattern. This segmentation allows a single integrated system to perform multiple optical functions that would otherwise require separate systems.
Solution Approach 2:
Different lenses within the optical unit have different local optical qualities and characteristics. The first lens, second lens, and third lens are designed with different properties to address specific aspects of beam pattern formation. This local quality differentiation within the single optical system enables it to achieve complex light distribution patterns that would require multiple separate systems.
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 solution enables the formation of an optimal beam pattern with simplified configuration and reduced costs by utilizing lenses with varying light distribution characteristics and tilted exit lenses, enhancing luminance and spread regions while accommodating vehicle body lines.
Implementation Method 1
an incident lens unit including a plurality of incident lenses; and an exit lens unit including a plurality of exit lenses corresponding to the plurality of incident lenses
Implementation Method 2
an exit lens unit including a plurality of exit lenses corresponding to the plurality of incident lenses
Data Source
AI summary
A lamp module capable of forming an optimal beam pattern that satisfies light distribution characteristics includes a light source unit that generates light; and an optical unit that transmits at least a portion of the light incident from the light source unit so as to form a predetermined beam pattern. The optical unit is inclined in the left and right directions such that a first lateral side thereof is disposed in front of a second lateral side thereof, and the optical unit includes an incident lens unit including a plurality of incident lenses; and an exit lens unit including a plurality of exit lenses corresponding to the plurality of incident lenses.