Light-Projecting Device Segmentation for Headlamp Brightness
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional headlamps using halogen, HID, or LED lamps face challenges in projecting light to small regions due to insufficient brightness and size limitations, leading to increased device size and reduced illumination efficiency when trying to partition illuminated regions into smaller areas.
Innovation Solution
A light-projecting device comprising multiple light source units with a light emitting section and a light distribution section, where each unit projects light to a partitioned region, allowing for high brightness and efficient light distribution even with a small reflector diameter, thereby forming a desired illuminated region without unnecessary luminous flux generation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If a reflector with small diameter is used to project light to a small region, then the device size is reduced, but the brightness and light distribution characteristics deteriorate
Solution Approach 1:
The illuminated region is divided into multiple partitioned regions, with each light source unit responsible for projecting light to a specific partitioned region. This segmentation allows each light source unit to use a small-diameter reflector while collectively covering the entire desired illuminated area, thus maintaining small device size while achieving sufficient brightness through coordinated multiple units
Solution Approach 2:
Multiple light source units with small-diameter reflectors are combined to achieve the overall lighting effect. Each unit contributes to a specific partitioned region, and their combined output creates the complete illuminated region with desired brightness characteristics, resolving the contradiction between small individual reflector size and overall illumination intensity
2Illumination intensity
If a reflector with large diameter is used to project light to a small region, then the brightness is improved, but the device size increases
Solution Approach 1:
Instead of using one large-diameter reflector, the system segments the illumination task into multiple smaller reflectors, each handling a partitioned region. This segmentation maintains brightness in each local area while reducing the overall device size, as multiple small reflectors occupy less space than a single large reflector would require
3Shape
If multiple light sources project light to the same superposed region, then the illuminated region is formed, but illumination efficiency drops due to unnecessary luminous flux generation
Solution Approach 1:
Each light source unit is assigned to project light to a specific partitioned region rather than all units projecting to the same region. This local quality assignment ensures that luminous flux is directed precisely where needed, eliminating unnecessary light generation and improving illumination efficiency while still forming the complete illuminated region through the combination of all partitioned regions
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 enables efficient formation of desired illuminated regions with reduced device size and improved light distribution characteristics, enhancing forward visibility while preventing glare for oncoming vehicles.
Implementation Method 1
a light emitting section that emits light upon receiving light
Implementation Method 2
a light distribution section provided corresponding to the light emitting section, the light distribution section distributing light from the light emitting section to a part of an illuminated region
Data Source
AI summary
A light-projecting device according to the present invention includes a plurality of light source units including (i) a light emitting section that emits light upon receiving a laser beam and (ii) a reflector. Each of the light source units project light to a corresponding one of light-projected spots which is a region to which light is projected in an illuminated region in a partitioning manner, and the illuminated region is formed by combining a plurality of the light-projected spot.