Vehicle Lamp Shield Segmentation for Brightness Pattern Control
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Solution Overview
Problem
Existing vehicle lamps struggle to form pattern images with various brightness patterns due to the fixed light intensity determined by the light source, limiting their ability to create diverse and informative lighting scenarios for drivers and pedestrians.
Innovation Solution
A vehicle lamp design incorporating a light source unit, a lens unit with incident and emitting lenses, and shields with non-uniform light shielding members across transmission regions, allowing for adjustable light distribution to create different brightness patterns without requiring a separate optical system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed light source is used to form pattern images, then the lamp structure remains simple, but the brightness pattern of the pattern image cannot be varied
Solution Approach 1:
The shield is segmented into multiple regions with different light transmission characteristics. By dividing the shield into a first region, second region, and third region with progressively smaller light blocking areas, the system creates multiple brightness levels without requiring multiple light sources or complex optical components. Each region segment controls the light amount differently, enabling varied brightness patterns.
Solution Approach 2:
Different regions of the shield are given different local qualities in terms of light transmission. The first region allows more light to pass through compared to the second region, which in turn allows more light than the third region. This local differentiation of light transmission properties enables the formation of pattern images with various brightness patterns using a single fixed light source.
2Volume of moving object
If micro lenses with short focal length are used to reduce lamp size, then the lamp size decreases, but the ability to form various brightness patterns is limited
Solution Approach 1:
The shield is divided into multiple segmented regions (first, second, and third regions) with progressively varying light blocking characteristics. This segmentation allows a single compact lens to generate multiple brightness patterns by selectively blocking light in different regions, maintaining small lamp size while achieving brightness pattern variety.
Solution Approach 2:
Different local regions of the shield are designed with different light transmission qualities. The first region transmits more light than the second region, which transmits more than the third region. This local quality differentiation enables the compact lens system to produce varied brightness patterns without increasing overall lamp volume.
3Illumination intensity
If the light amount of the light source is adjusted to change pattern image brightness, then brightness can be varied, but the lamp structure becomes more complex
Solution Approach 1:
The shield acts as an intermediary element between the fixed light source and the lens. Instead of adjusting the light source itself to change brightness, the shield's segmented regions modulate the light amount passing through to the lens. This intermediary approach enables brightness variation while keeping the light source and overall system structure simple.
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
This configuration simplifies the adjustment of brightness patterns and enables the creation of more diverse and informative lighting scenarios, enhancing visibility and communication on the road surface.
Implementation Method 1
a lens unit including a plurality of incident lenses, to which the light generated from the light source unit is incident, a plurality of emitting lenses for emitting the light incident from the plurality of incident lenses
Implementation Method 2
a plurality of shields for obstructing at least a portion of the light incident to each of the plurality of emitting lenses. Each of the plurality of shields may include a transmission region for transmitting light and a blocking region for obstructing light
Data Source
AI summary
A vehicle lamp includes a light source unit for generating light, and a lens unit including a plurality of incident lenses, to which the light generated from the light source unit is incident, a plurality of emitting lenses for emitting the light incident from the plurality of incident lenses, and a plurality of shields for obstructing at least a portion of the light incident to each of the plurality of emitting lenses. Each of the plurality of shields includes a transmission region for transmitting light and a blocking region for obstructing light, and at least one light shielding member for obstructing a portion of the light through the transmission region is formed in the transmission region of at least one of the plurality of shields.