Modular Headlight Projection Module Glare Reduction
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Solution Overview
Problem
Conventional headlights have reduced illumination intensity due to ineffective light reflection and glare issues, particularly in regions above the horizontal center line, which affects nighttime driving safety and compliance with regulations.
Innovation Solution
A headlight with a modular projection module that includes a base, lighting module, support frame, reflective cover, and light-shielding member, where the lighting module is positioned below the center line of the lens assembly, and the light-shielding member has a blocking ear and reflective block to optimize light reflection and reduce glare by blocking light to the passing-beam dimming zone while increasing luminosity in the brightened region.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a light-shielding board is mounted to block light transmitted to the upper portion of the transparent cover, then glare toward oncoming cars is reduced, but illumination intensity is weakened
Solution Approach 1:
A light-shielding member with a light-reflecting surface is introduced as an intermediary element between the light source and the transparent cover. This member reflects blocked light toward the lens assembly, converting what would be wasted light into useful illumination. The light-reflecting surface acts as a mediator that transforms the light-blocking function into a dual function of glare reduction and illumination enhancement.
Solution Approach 2:
The patent converts the harmful effect of light being blocked by the light-shielding member into a beneficial effect. Instead of allowing blocked light to be wasted, the light-reflecting surface redirects this previously blocked light toward the lens assembly, turning the harm (light blockage) into a benefit (enhanced illumination intensity while maintaining glare reduction).
2Object-affected harmful factors
If the LED lighting element and reflector are mounted above the center line, then glare control is achieved, but only a small part of the reflective surface is utilized
Solution Approach 1:
The patent extends the light reflection path from a single-dimensional direct reflection to a multi-dimensional path by introducing the light-shielding member with light-reflecting surface. Light that would have been blocked is now reflected in a different spatial dimension toward the lens assembly, utilizing previously unused spatial pathways to improve energy efficiency.
Solution Approach 2:
The light-shielding member is designed to serve multiple functions: it continues to block light in the upward direction to control glare, while simultaneously reflecting blocked light toward the lens assembly to enhance illumination. This multi-functional design allows the same component to address both glare control and energy efficiency requirements.
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
Enhances illumination intensity by effectively utilizing light reflection and reducing glare, meeting regulatory requirements for lower luminous intensity in specific regions, thereby improving driving safety and compliance with traffic regulations.
Implementation Method 1
a first reflective surface concavely formed on an inner wall of the reflective cover and facing the lighting module
Implementation Method 2
a blocking ear formed on and horizontally protruding rearwards from a portion of a rear surface of the blocking wall which is adjacent to a left end of the blocking wall and is located above the center line
Data Source
AI summary
A headlight with a modular projection module for enhancing illumination intensity includes a base, a lighting module, a reflective cover, a light-shielding member and a lens assembly. The base has a connection portion obliquely formed on a top of the base. The lighting module is mounted on the connection portion of the base. The reflective cover is mounted on the connection portion of the base with an inner reflective surface facing the lighting module. The lens assembly is mounted on a front portion of the base. The light-shielding member is mounted on a rear portion of the lens assembly. As the lighting module is located below a horizontal center line of the lens assembly and the connection portion of the base is obliquely arranged, the reflective cover can significantly reflect light emitted from the lighting module to enhance illumination intensity of the headlight.