Vehicular Headlamp Segmented Optical Systems
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing vehicular headlamps cannot achieve lighting appearances other than those formed during low beam or high beam light distribution patterns, limiting their functionality and visual effects.
Innovation Solution
A vehicular headlamp design incorporating a front lens body and multiple optical systems, including low beam and Adaptive Driving Beam (ADB) optical systems, which use specific lens configurations and light diffusion angles to create distinct light distribution patterns, allowing for the formation of various lighting appearances by controlling the states of low beam and ADB light sources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple optical systems (low beam and ADB) are used to create diverse lighting appearances, then lighting versatility is improved, but device complexity increases
Solution Approach 1:
The headlamp is divided into multiple independent optical systems (low beam optical systems and ADB optical systems), each with its own light sources and optical components. This segmentation allows each subsystem to be controlled independently to create different lighting appearances, resolving the contradiction by making the system modular and adaptable while managing complexity through functional division.
Solution Approach 2:
The headlamp system is designed to perform multiple functions using the same physical infrastructure (front lens body, rear lens units). By controlling different combinations of light sources (low beam and ADB) and their corresponding optical systems, the same hardware achieves diverse lighting appearances including low beam mode, high beam mode, and sequential lighting modes, thereby improving versatility without proportionally increasing complexity.
2Adaptability or versatility
If ADB light sources are turned off to create different lighting patterns, then lighting appearance versatility is improved, but light distribution uniformity deteriorates due to dark portions
Solution Approach 1:
The front lens body acts as an intermediary optical element that receives light from multiple rear lens units (low beam and ADB) and integrates their outputs. When ADB light sources are turned off, the front lens body still receives and transmits low beam light, maintaining overall light distribution uniformity while allowing the creation of different lighting appearances through selective activation of subsystems.
Solution Approach 2:
The optical systems are designed to merge their light outputs through the common front lens body. The low beam optical systems and ADB optical systems are positioned and configured so that their light paths converge through the front lens body, creating a unified light distribution pattern. This merging ensures that even when one subsystem is inactive, the active subsystem's light is uniformly distributed, preventing dark portions while maintaining versatility.
3Adaptability or versatility
If sequential lighting patterns are implemented by controlling individual light sources, then lighting appearance versatility is improved, but control complexity increases
Solution Approach 1:
The lighting system implements dynamic control where the operational state of each light source (on/off) and each optical system (active/inactive) can be changed in real-time based on driving conditions. This dynamic configurability allows sequential lighting patterns and adaptive beam control, achieving high versatility. The control complexity is managed by implementing this dynamics at the electronic control level rather than requiring complex mechanical or optical mechanisms.
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
Enables the creation of diverse lighting appearances, including sequential patterns and improved light distribution, while preventing dark portions and ensuring consistent light emission, even when ADB light sources are turned off, thus enhancing the visual effect and functionality of the headlamp.
Implementation Method 1
a light source which is disposed behind the rear lens unit and emits light which is irradiated forward permeating the rear lens unit and the front lens body in that order to form a light distribution pattern
Implementation Method 2
a front lens body extending in a predetermined direction; a plurality of optical systems disposed along the predetermined direction behind the front lens body
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A vehicular headlamp comprising: a front lens body extending in a predetermined direction; a plurality of optical systems disposed along the predetermined direction behind the front lens body; and a control means, wherein the plurality of optical systems each includes: a rear lens unit disposed behind the front lens body; and a light source which is disposed behind the rear lens unit and emits light which is irradiated forward permeating the rear lens unit and the front lens body in that order to form a light distribution pattern for a headlamp, and the control means individually controls lighting states of the light sources in each of the plurality of optical systems.