Dual Reflector Vehicle Lamp Optical System
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Solution Overview
Problem
Existing vehicle lamp illumination devices with bidirectional collimating lenses face challenges in achieving illumination light patterns with large aspect ratios due to the large volume and heavy weight of these lenses, leading to low production efficiency and high costs.
Innovation Solution
The optical reflecting system employs a primary optical system with a light source and a third reflector, along with a dual-reflector configuration where the first reflector collimates light in one direction and the second reflector collimates light in an orthogonal direction, allowing for flexible adjustment of the focal points to achieve desired illumination patterns.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If a bidirectional collimating lens is used to achieve illumination light patterns with large aspect ratios, then the light pattern aspect ratio is improved, but the volume and weight of the optical component increase
Solution Approach 1:
The bidirectional collimating lens is divided into two separate unidirectional collimating reflectors. Each reflector handles collimation in one direction (horizontal or vertical), replacing the single monolithic lens with two simpler, smaller reflective components that achieve the same overall light pattern.
Solution Approach 2:
The optical lens system is replaced with a reflective system using mirrors or reflectors. This substitution eliminates the need for complex lens manufacturing and reduces the overall component size while maintaining the bidirectional collimation function through the arrangement of multiple reflective surfaces.
2Shape
If a bidirectional collimating lens is used to achieve illumination light patterns with large aspect ratios, then the light pattern aspect ratio is improved, but the manufacturing cost and complexity increase
Solution Approach 1:
The complex bidirectional collimating lens is segmented into two separate unidirectional collimating reflectors. Each reflector is simpler to manufacture individually, and their assembly is more straightforward than producing and precision-machining a single complex lens with bidirectional collimation properties.
Solution Approach 2:
The lens-based optical system is replaced with a reflective system. Reflectors can be manufactured using simpler processes such as coating mirrors or shaping reflective surfaces, which are generally more cost-effective and easier to produce than precision optical lenses, especially for bidirectional collimation applications.
3Shape
If a bidirectional collimating lens is used to achieve illumination light patterns with large aspect ratios, then the light pattern aspect ratio is improved, but the production efficiency decreases
Solution Approach 1:
The manufacturing process is segmented into producing two separate, simpler unidirectional collimating reflectors rather than one complex bidirectional lens. This segmentation allows for parallel production, simpler machining operations, and reduced manufacturing time, thereby improving overall production efficiency.
Solution Approach 2:
The replacement of lenses with reflective components enables faster production cycles. Reflectors can be manufactured using more rapid processes such as mirror coating or simple reflective surface shaping, which are more efficient than precision lens grinding and polishing, thus increasing production throughput.
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
This configuration enables the formation of illumination light patterns with a relatively large aspect ratio, improving production efficiency and reducing costs by simplifying the manufacturing process and utilizing a compact, easy-to-manufacture design.
Implementation Method 1
a first reflector having a first reflecting surface configured to collimate light in a first direction
Implementation Method 2
a second reflector having a second reflecting surface configured to collimate light in a second direction orthogonal to the first direction
Data Source
Figure 1
Figure 2~3
Figure 4~5
AI summary
Provided are an optical reflecting system for a vehicle lamp illumination device and a vehicle lamp illumination device, which comprises a primary optical system having a light source (80), and the optical reflecting system is configured to receive light beams emitted from the light source (80) of the primary optical system. The optical reflecting system comprises a first reflector having a first reflecting surface (10) and a second reflector having a second reflecting surface (20), wherein the first reflecting surface (10) is configured to collimate light in a first direction, and the second reflecting surface (20) is configured to collimate light in a second direction orthogonal to the first direction. The first reflecting surface (10) and the second reflecting surface (20) have a curved shape represented by a contour line, and the curved shape is a curved surface formed by stretching the contour line along a direction normal to a plane where the contour line is located. The optical reflecting system is configured such that light beams emitted from the primary optical system having the light source (80), after being reflected by the first reflector and the second reflector, are emitted in a form of approximately parallel light beams, so as to form an illumination light pattern of the vehicle lamp illumination device.