Vehicle Head Lamp Shield Reflective Surface Light Recovery
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Solution Overview
Problem
Current vehicle head lamps face inefficiencies in luminous performance, particularly with low beams, due to excessive light being shielded by the light shield, which limits the effective light output and reduces overall head lamp efficiency.
Innovation Solution
A head lamp design incorporating a reflective surface integrated with the shield, a main lens, and a sub lens, where the shield has a main hole and a sub hole to allow light to pass through, enhancing the utilization of light by directing it towards the front of the vehicle, thereby improving the low beam's illumination area without increasing production costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a shield is used to implement high beam and low beam by shielding portions of light, then beam direction control is achieved, but luminous efficiency deteriorates due to light being blocked
Solution Approach 1:
The patent converts the harmful effect of light shielding into a beneficial effect by integrating a reflective surface on the shield. The reflective surface reflects previously blocked light toward the lens, transforming the waste light into useful illumination. This resolves the contradiction by maintaining beam direction control while recovering luminous efficiency that would otherwise be lost.
Solution Approach 2:
The patent recovers light that would have been discarded by the shield. By adding a reflective surface, the system captures and redirects the shielded light toward the lens, effectively recovering energy that would have been wasted. This allows the system to maintain both directional control and improved luminous efficiency.
2Illumination intensity
If amount of shielded light is increased to implement low beam, then beam direction is controlled, but effective light output is reduced
Solution Approach 1:
The reflective surface on the shield converts the previously harmful blocked light into beneficial effective light output. By reflecting the shielded light toward the lens, the system increases the amount of effective light reaching the target area, resolving the contradiction between directional control and effective light output.
Solution Approach 2:
The patent recovers light that would have been discarded by the shield during low beam operation. The reflective surface captures this light and redirects it through the lens, increasing the effective light output while maintaining the low beam directional control.
3Loss of energy
If a reflective surface is added to the shield to improve light utilization, then luminous efficiency is improved, but device complexity increases
Solution Approach 1:
The patent merges the reflective surface with the existing shield structure, making them an integrated component rather than separate parts. This combination approach improves luminous efficiency while minimizing the increase in device complexity, as the reflective function is added to an existing structural element.
Solution Approach 2:
The shield is given multiple functions: it continues to provide beam direction control by blocking light while simultaneously providing light reflection through its integrated reflective surface. This multi-functionality improves luminous efficiency without requiring additional separate components, thus limiting the increase in device complexity.
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 design enhances the utilization efficiency of the light source, enlarges the low beam's illumination area, and improves driving safety by optimizing the light distribution, resulting in a more effective head lamp performance compared to existing systems.
Implementation Method 1
a reflective mirror reflecting the light emitted from the light source
Implementation Method 2
a shield implementing a low beam by transmitting a part of the light that is emitted from the light source and/or reflected by the reflective mirror and projected toward a front of the vehicle and shielding other part of the light
Implementation Method 3
a main lens transmitting the part of the light that has passed through the main hole of the shield toward the front of the vehicle
Implementation Method 4
a reflective surface reflecting the other part of the light
Implementation Method 5
a sub lens transmitting the light reflected by the reflective surface
Data Source
AI summary
A head lamp for a vehicle may include a light source emitting a light, a reflective mirror reflecting the light emitted from the light source, a shield implementing a low beam by transmitting a part of the light that is emitted from the light source and/or reflected by the reflective mirror and projected toward a front of the vehicle and shielding other part of the light that is emitted from the light source and/or reflected by the reflective mirror and projected toward the front of the vehicle, a main hole formed at the shield to allow the part of the light pass through, a main lens transmitting the part of the light that has passed through the main hole of the shield toward the front of the vehicle, a reflective surface reflecting the other part of the light, and a sub lens transmitting the light reflected by the reflective surface.