Slim Vehicle Lamp Reflector Design for Compact Dual Beam Packaging
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Solution Overview
Problem
Downsizing an optical system for vehicles to enable both low and high beam functionality is challenging due to the difficulty in reducing the size while maintaining effective light emission.
Innovation Solution
A slim type lamp apparatus featuring a reflector with a bent shape and multiple beam guides, including a first reflective surface for low beam emission and a second reflective surface for high beam emission, allowing for efficient light distribution and reduced overall size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional optical system is used to emit both low beam and high beam, then both beam functions are achieved, but the overall size of the optical system becomes large
Solution Approach 1:
The reflector is designed to serve multiple functions: it reflects light for low beam emission and also guides light for high beam emission through its bent shape and multiple reflective surfaces. This multi-functionality allows a single optical component to replace what would traditionally require separate systems, thereby reducing overall size while maintaining both beam capabilities
Solution Approach 2:
The reflector is formed in a bent shape with incident part and exit part disposed at different positions, utilizing three-dimensional spatial arrangement to achieve both low and high beam functions. By changing the geometric configuration from a simple planar structure to a bent three-dimensional structure, the system accomplishes multiple beam functions within a compact volume
2Volume of moving object
If the optical system size is reduced, then packaging is improved, but it becomes difficult to maintain effective light emission for both low and high beams
Solution Approach 1:
Different regions of the reflector are designed with different reflective surfaces oriented at different angles. The first reflective surface is configured to reflect light for low beam emission, while the bent shape creates appropriate angles for high beam emission. This local differentiation of reflective properties ensures that each part of the compact reflector contributes to the appropriate beam function with effective light emission
3Volume of moving object
If a bent shape reflector is used to reduce size, then the optical system becomes compact, but the structural complexity increases
Solution Approach 1:
The incident part, exit part, and multiple reflective surfaces are integrated into a single bent reflector structure rather than being separate components. This merging of functions into one monolithic component achieves the compact size goal while actually reducing the number of separate parts and assembly complexity, despite the sophisticated geometry
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 implementation of both low and high beams in a compact optical system, enhancing the packaging of the vehicle lighting system with improved light efficiency and flexibility in beam distribution.
Implementation Method 1
a first reflective surface with a first reflection angle, wherein the first reflective surface is configured to reflect the low light beam, which is received at the reflector through the incident part, such that the low light beam travels toward the exit part
Implementation Method 2
a parallel light lens configured to convert the low light beam, which is emitted from the first light source, into parallel light
Implementation Method 3
a condensing lens part configured to condense the light for the high light beam emitted from the second light source
Data Source
AI summary
A degree of freedom of upper and lower widths of an area in which light is emitted is secured such that a slim type head lamp is implemented. Further, a slim type lamp apparatus for a vehicle, in which a low beam and a high beam are implemented at the same lighting portion, and an overall size of an optical system is reduced such that it is advantageous to configure a package of an optical system, is disclosed.