Vehicle Headlight Movable Aperture for Brightness Resolution Trade-off
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Solution Overview
Problem
Current vehicle headlight projection lens modules lack the ability to adjust aperture, making it difficult to balance brightness, resolution, and contrast, necessitating additional indicator light assemblies.
Innovation Solution
A headlight system with a movable aperture mechanism driven by a power source and linkage member, allowing adjustment of aperture values to provide high-brightness illumination or high-resolution and high-contrast indicative patterns.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the aperture value is increased to provide high-brightness illumination light, then the brightness is improved, but the resolution and contrast of indicative patterns deteriorate
Solution Approach 1:
The patent implements a movable aperture member that can dynamically adjust the aperture value between different positions. This dynamic adjustment capability allows the system to optimize the aperture value for illumination mode (larger aperture) or indicative pattern mode (smaller aperture), resolving the contradiction between brightness and resolution by adapting to different operational requirements.
Solution Approach 2:
The system changes the aperture value parameter based on the operational mode. By adjusting the aperture value between different settings (e.g., first aperture value for illumination, second aperture value for indicative patterns), the system optimizes both brightness and resolution performance for their respective functions, eliminating the need for separate indicator light assemblies.
2Measurement precision
If an additional indicator light assembly is configured to provide indicative lights, then the resolution and contrast are improved, but the device complexity increases
Solution Approach 1:
The patent makes the projection lens module multi-functional by enabling it to perform both illumination and indicative pattern projection functions. By adjusting the aperture value, the same lens module can switch between providing high-brightness illumination and high-resolution indicative patterns, eliminating the need for a separate indicator light assembly and reducing device complexity.
Solution Approach 2:
The system merges the illumination function and indicative pattern projection function into a single projection lens module. By combining these functions and using aperture value adjustment to switch between them, the patent eliminates redundant components and simplifies the overall device structure while maintaining both functional 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 driving safety by enabling the headlight to adjust aperture values for different driving conditions, providing high-quality illumination and resolution as needed.
Implementation Method 1
a lens assembly (120), an aperture (130)... The lens assembly is disposed at downstream of an optical path of the image light source
Data Source
AI summary
A headlight for vehicles, including an image light source, a lens module, a lens cover, and a driving device, is provided. The lens module includes a lens assembly and an aperture. The lens assembly is disposed at downstream of an optical path of the image light source. The aperture includes a base and a movable mechanical member. The aperture is disposed at the downstream of the optical path of the image light source. The lens cover is disposed at downstream of an optical path of the aperture. The driving device is connected to the aperture. The driving device includes a power source and a linkage member connected to the movable mechanical member. The lens module includes at least two aperture values, and the aperture values are both not greater than 2.0.