Vehicle Head Lamp Lens Array Segmentation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing vehicle head lamps with aspheric lenses are limited by increased size and manufacturing cost, and have constraints in light distribution pattern design and surface emission image implementation due to the use of a single aspheric lens.
Innovation Solution
A head lamp design incorporating a light source unit, an optic unit with an optic emission part that forms multiple optical focuses, and lens array units to increase the diffusion angle of light, allowing for a more compact optical system and improved design flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If an aspheric lens is applied to the head lamp, then a light distribution pattern can be formed, but the size of the head lamp is increased
Solution Approach 1:
The patent divides the single aspheric lens into multiple planar lenses arranged in an array. Each lens in the array corresponds to a specific light source and forms a portion of the overall light distribution pattern. This segmentation allows the system to achieve the same functional capability with a more compact footprint, resolving the contradiction between light distribution capability and head lamp size.
2Adaptability or versatility
If an aspheric lens is applied to the head lamp, then a light distribution pattern can be formed, but the manufacturing cost is increased
Solution Approach 1:
The patent replaces the complex aspheric lens with multiple simpler planar lenses. Planar lenses are easier and less expensive to manufacture than aspheric lenses, which require complex molding processes. By segmenting the optical function across multiple simple lenses, the system maintains light distribution capability while reducing manufacturing cost.
Solution Approach 2:
The patent changes the optical parameters from a single complex aspheric surface to multiple planar surfaces with different orientations and positions. This parameter change allows the use of simpler, more cost-effective manufacturing processes while achieving the desired light distribution pattern through the collective action of multiple lenses.
3Device complexity
If a single aspheric lens is used, then the head lamp structure is simple, but there is a limitation in implementing the design of the head lamp
Solution Approach 1:
The patent segments the optical system into multiple lens elements, each independently positioned and oriented. This segmentation provides design flexibility because each lens can be individually optimized for specific light sources or beam patterns, allowing for greater overall system adaptability despite the increased number of components.
Solution Approach 2:
The patent creates a universal optical system where the array of planar lenses can serve multiple functions: forming different light distribution patterns, creating surface emission images, and accommodating various light source configurations. This multi-functionality increases design flexibility without requiring fundamentally different optical systems for different applications.
4Volume of moving object
If a single aspheric lens is used, then the optical system is compact, but the diffusion angle of light is limited
Solution Approach 1:
The patent uses multiple planar lenses arranged in an array, where each lens contributes to the overall light diffusion. The collective arrangement of these segmented lenses creates a wider effective diffusion angle compared to a single lens of similar size, while maintaining a compact optical system footprint.
Solution Approach 2:
The patent transitions from a single-point optical element (aspheric lens) to a distributed array of optical elements (planar lenses). This dimensional change from one-dimensional single element to two-dimensional array allows the system to achieve wider light diffusion angles while maintaining compact overall size through efficient spatial utilization.
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 reduces the size and manufacturing cost of the optical system, enhances the diffusion angle of light to about 30°, and enables a welcome light function, while allowing for more design freedom and efficient light distribution.
Implementation Method 1
a first lens array unit disposed on an emission side of the shield unit and having a plurality of first lenses arranged therein; and a second lens array unit disposed on an emission side of the first lens array unit and having a plurality of second lenses arranged therein
Data Source
AI summary
A head lamp for a vehicle may include: a light source unit configured to emit light; an optic unit configured to control the light, emitted from the light source unit, to be emitted to form a plurality of optical focuses; a shield unit disposed to form a cutoff line on the plurality of optical focuses; a first lens array unit disposed on an emission side of the shield unit and having a plurality of first lenses arranged therein; and a second lens array unit disposed on an emission side of the first lens array unit and having a plurality of second lenses arranged therein.