Headlight Module Reflecting Surface Light Utilization
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Solution Overview
Problem
Existing headlight configurations, such as those described in Patent Reference 1, suffer from low light utilization efficiency due to the blocking of light by shades, resulting in unutilized illuminating light.
Innovation Solution
A headlight module comprising a light source and a light guide projection optical element with specific reflecting surfaces that form a first light distribution pattern with a cutoff line and an additional light distribution pattern by reflecting partial light, thereby enhancing light utilization efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a shade is used to block part of the light from the light source to form a cutoff line, then a distinct cutoff line can be achieved, but light utilization efficiency deteriorates
Solution Approach 1:
The invention extracts the light blocking function from a traditional shade and relocates it to a specific region of the reflecting surface. The reflecting surface has a first region that reflects light to form the cutoff line and a second region that does not reflect light, effectively blocking it. This extraction allows the cutoff line formation without the need for a separate shade that would block additional light.
Solution Approach 2:
The reflecting surface serves multiple functions: it reflects light to form the desired light distribution pattern, forms the cutoff line through its first region, and blocks excess light through its second region. By integrating these functions into a single component, the invention eliminates the need for separate shades and improves light utilization efficiency while maintaining cutoff line distinctness.
2Manufacturing precision
If a shade blocks light to create a cutoff line, then the cutoff line is distinct, but the blocked light is not utilized for illumination
Solution Approach 1:
The invention converts what would traditionally be wasted blocked light into useful illumination. The second region of the reflecting surface blocks light that would otherwise miss the target area, redirecting it to illuminate regions that require additional light. This transforms the potentially harmful effect of light blocking into a beneficial illumination source, improving overall light utilization efficiency while maintaining cutoff line distinctness.
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 described headlight module achieves high light utilization efficiency by effectively using light that would otherwise be blocked, resulting in a more efficient and effective light distribution pattern.
Implementation Method 1
an incidence surface to condense the light, thereby forming a first light
Implementation Method 2
a first reflecting surface to reflect partial light as part of the first light, thereby forming light in a first light distribution pattern
Implementation Method 3
a second reflecting surface inclined with respect to an optical axis of the light source so as to be farther from the optical axis as a distance from the light source along the optical axis increases, wherein the second reflecting surface forms light in a second light distribution pattern by reflecting second light formed of the partial light reflected by the first reflecting surface and adds the light in the second light distribution pattern to the light in the first light distribution pattern
Data Source
AI summary
A headlight module includes a light source to emit light; and a light guide projection optical element including an incidence surface to condense the light, thereby forming a first light, a first reflecting surface to reflect partial light as part of the first light, thereby forming light in a first light distribution pattern having a cutoff line from light other than the partial light, and a second reflecting surface inclined with respect to an optical axis of the light source so as to be farther from the optical axis as a distance from the light source along the optical axis increases. The second reflecting surface forms light in a second light distribution pattern by reflecting second light formed of the partial light reflected by the first reflecting surface and adds the light in the second light distribution pattern to the light in the first light distribution pattern.