Vehicle Headlight Segmentation for Turning-On Perception
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Solution Overview
Problem
Conventional vehicle headlights configured to form high-beam additional light distribution patterns lack the ability to make drivers feel the sense of turning-on, especially when the high-beam additional light distribution pattern is formed, as they do not provide sufficient perceptible illumination on the road surface.
Innovation Solution
A vehicle lighting fixture that includes a lighting unit capable of forming a high-beam additional light distribution pattern and a turning-on perceptible light distribution pattern, with a swivel mechanism to adjust the light distribution, and specific optical configurations such as projector lenses, reflecting surfaces, and shades to enhance illumination intensity and visibility, allowing drivers to feel the turning-on of the headlight.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a high-beam additional light distribution pattern is formed to improve distant visibility, then the illumination intensity on the road surface is insufficient to make drivers feel the turning-on of the headlight
Solution Approach 1:
The lighting system is divided into two separate lighting units: a first lighting unit (LED) for forming the high-beam light distribution pattern and a second lighting unit (laser) for forming the high-beam additional light distribution pattern. This segmentation allows each unit to be optimized for its specific function, with the LED providing broad illumination for driver awareness and the laser providing targeted distant illumination.
Solution Approach 2:
Different regions of the road are illuminated with different light characteristics. The first lighting unit illuminates the general road area for driver awareness, while the second lighting unit provides concentrated illumination in the distant high-beam region. This local quality differentiation ensures both driver perception of turning-on and improved distant visibility.
2Adaptability or versatility
If the high-beam additional light distribution pattern is overlaid on the high-beam light distribution pattern, then distant visibility is improved, but the driver cannot feel the sense of turning-on
Solution Approach 1:
The first lighting unit (LED) is activated before or simultaneously with the second lighting unit (laser) to establish a baseline illumination that the driver can perceive as the headlight turning on. This preliminary action ensures driver awareness before the additional distant illumination is added.
Solution Approach 2:
The first lighting unit acts as an intermediary between the driver and the second lighting unit. It provides a perceptible light distribution pattern that mediates the driver's awareness, while the second lighting unit provides the additional distant illumination that the driver cannot directly perceive as turning on.
3Device complexity
If a single lighting unit is used to form both high-beam and additional light patterns, then device complexity is reduced, but the ability to provide distinct light distribution patterns is compromised
Solution Approach 1:
Each lighting unit is designed with multi-functionality in mind. The first lighting unit can operate independently for daytime running lights or low-beam functions, while also contributing to high-beam illumination. The second lighting unit provides both the high-beam additional light distribution and the turning-on perceptible light distribution, reducing the need for separate dedicated components.
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 solution improves distant visibility and increases illumination intensity on the road surface, making drivers aware of the headlight's turning-on, while minimizing chromatic aberration and guiding the driver's line of sight through adjustable light distribution patterns.
Implementation Method 1
a projector lens 32 having a rear-side focal point; a light source 34 disposed behind the rear-side focal point of the projector lens 32
Implementation Method 2
a front-side reflecting surface 38... configured to reflect the light from the light source 34 and converge the same in a region of the front-side shade 42 at or near the rear-side focal point of the projector lens 32
Implementation Method 3
a rear-side shade 40 configured to extend from a position at or near the rear-side focal point of the projector lens 32 toward the light source 34
Data Source
AI summary
Provided is a vehicle headlight for forming a high-beam additional light distribution pattern overlaid on a high-beam light distribution pattern. The vehicle headlight is capable of making a driver feel the sense of turning-on of the headlight when the high-beam additional light distribution pattern is additionally formed. The vehicle lighting fixture can be configured to further form a turning-on perceptible light distribution pattern for causing a driver to feel a sense of turning-on together with the high-beam additional light distribution pattern.