Vehicle Light Lenticular Body with Extractor Elements
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Solution Overview
Problem
Existing vehicle light systems struggle to achieve different luminance levels in a cost-effective and energy-efficient manner, as they often require oversized light sources due to the use of filters that absorb light power, leading to inefficiency and increased production complexity.
Innovation Solution
A vehicle light design featuring a light guide body with extractor elements and reflecting elements that direct light beams to create distinct luminance levels, allowing for customizable light patterns without the need for energy-wasting filters, using a light emitting diode (LED) source and a partially transparent lenticular body to achieve precise light distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If filters are used to create different luminance levels, then the desired light pattern with varying luminance is achieved, but energy efficiency deteriorates due to light absorption
Solution Approach 1:
The light guide body is segmented into multiple extraction zones with extractor elements distributed throughout its volume. Each extractor element extracts a portion of the light beam from the light guide, creating different luminance levels in different spatial regions without absorbing light. This segmentation approach replaces the traditional filter-based method with a spatial distribution strategy that maintains energy efficiency.
Solution Approach 2:
The light guide body acts as an intermediary between the light source and the final light pattern. Instead of using filters to modify light after generation, the light guide body pre-distributes and extracts light in controlled amounts at different locations, mediating the light transmission process to achieve the desired luminance pattern without energy loss.
2Illumination intensity
If filters are used to achieve different luminance levels, then the light pattern is created, but device complexity and cost increase
Solution Approach 1:
The invention merges the light guide body with the extractor elements into a single integrated component. The extractor elements are distributed within the light guide body structure, combining the functions of light guidance and light extraction into one element. This integration simplifies manufacturing and reduces assembly complexity compared to separate filter components.
Solution Approach 2:
The light guide body serves multiple functions simultaneously: it guides light from the source, distributes light to different regions, and works with extractor elements to create the final luminance pattern. This multi-functionality eliminates the need for separate filter components, reducing device complexity and production costs.
3Illumination intensity
If filters are used to create luminance patterns, then the aesthetic effect is achieved, but the light source size must be increased to compensate for energy loss
Solution Approach 1:
The invention changes the approach from modifying light intensity through absorption (filter transmission parameter) to modifying light distribution through extraction (spatial distribution parameter). By controlling the extraction amount at different positions along the light guide body, the desired luminance pattern is achieved without energy loss, eliminating the need for oversized light sources.
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 solution enables the creation of light patterns with varying luminance levels while maintaining energy efficiency, simplicity, and meeting photometric specifications, allowing for customizable and aesthetically pleasing designs without the need for oversized light sources or energy dissipation.
Implementation Method 1
a light guide body (28) shaped to receive a light beam from a light input wall (32) and to transmit it, by total internal reflection, to a light output wall (36)
Implementation Method 2
The light guide body (28) comprises extractor elements (44, 60, 76) which extract portions of the light beam from the light guide body (28)
Implementation Method 3
The first reflecting element (52) reflects the first extracted portion (48) towards the lenticular body (20)
Data Source
Figure 1~3
Figure 4
Figure 5~6
AI summary
A vehicle light (4) comprising - a container body (8) and a lenticular body (20) joined at least partially to close the container body, - wherein the container body (8) delimits a containment seat (12) housing at least one light source (16) that emits a beam of light through the lenticular body (20), - wherein said at least one light source (16) faces at least one light guide (24) having a light guide body (28) shaped to receive the light beam from a light input wall (32), and to transmit it, by total internal reflection, to a light output wall (36) and from this to a main light emission portion (40) of the lenticular body (20), - wherein the light guide body (28) comprises at least first extractor elements (44), placed between the light input wall (32) and the light output wall (36), which extract a first extracted portion (48) of the light beam emitted by the light source (16) and direct it onto first reflecting elements (52) separate from the light guide (24), said first reflecting elements (52) reflecting said first extracted portion (48) towards the lenticular body (20) at a first auxiliary light emission portion (56), separate from said main emission portion (40).