Vehicle Lamp Lens Array for Uniform Inclined Beam Patterns
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Solution Overview
Problem
Conventional vehicle lamps with micro lens arrays face challenges in maintaining uniformity of light distribution when inclined, leading to degraded optical performance and increased size, and struggle to display dynamic images effectively.
Innovation Solution
A vehicle lamp design featuring a lens array with a first micro lens part and a second micro lens part, where the upward/downward sizes of first micro lenses in the second area are smaller than those in the first area, and a shield part is used to form specific beam patterns on the road surface, minimizing light loss and enhancing uniformity without additional light sources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the optical system is mounted to be inclined to irradiate light to the road surface, then the light inclination is achieved, but the lamp size increases as the range occupied by the optical system increases
Solution Approach 1:
The optical system is divided into a first lens part and a second lens part, with the first lens part having a smaller upward/downward size than the second lens part. This segmentation allows the optical system to achieve light inclination while reducing the overall lamp volume by optimizing the size distribution of different optical components.
Solution Approach 2:
The first lens part is designed with locally optimized smaller dimensions compared to the second lens part, creating a non-uniform size distribution within the optical system. This local quality differentiation enables the system to maintain light inclination functionality while minimizing the total space occupied by the optical system.
2Device complexity
If a projection type optical system with a static image is used, then the structure is simple, but it is difficult to implement dynamic images and secure visibility
Solution Approach 1:
The patent introduces a movable shield part that can change its position or configuration, transforming the static projection system into a dynamic one. This allows the system to display dynamic images and patterns on the road surface while maintaining a relatively simple optical structure, thereby improving visibility and information conveyance without significantly increasing device complexity.
3Manufacturing precision
If the upward/downward sizes of first micro lenses are made smaller than second micro lenses, then uniformity of beam pattern is enhanced, but manufacturing precision requirements increase
Solution Approach 1:
The patent applies local quality by designing the first lens part with smaller upward/downward sizes compared to the second lens part. This deliberate size differentiation creates optimal light distribution across different regions of the beam pattern, enhancing overall uniformity. The design accounts for manufacturing capabilities by establishing feasible size ratios that balance optical performance with manufacturability.
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 enhances the uniformity of the beam pattern on the road surface by optimizing light distribution and minimizing light loss, allowing for improved optical performance and the potential to display dynamic images without increasing the lamp's size or requiring additional light sources.
Implementation Method 1
a lens array provided on a front side of the light source part, the lens array includes a first lens part including a plurality of first micro lenses, to which the light is input from the light source part
Data Source
AI summary
A lamp for a vehicle that includes a light source part that generates and irradiates light, and a lens array provided on a front side of the light source part, the lens array includes a first lens part including a plurality of first micro lenses, to which the light is input from the light source part, and a second lens part including a plurality of second micro lenses that outputs the light input from the first lens part, and upward/downward sizes of at least some of the plurality of first micro lenses are smaller than upward/downward sizes of the second micro lenses provided at corresponding locations.