Variable-Transmittance Optical Element for Vehicle Lighting Efficiency
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Solution Overview
Problem
Conventional lighting assemblies for vehicles often face challenges in achieving efficient light transmission and distribution while meeting regulatory requirements, leading to inconsistent light output and energy inefficiencies due to uniform tinted lenses that increase energy usage and thermal heating.
Innovation Solution
The use of an optical element with distinct portions of transmittance, where a high transmittance portion (>80%) is surrounded by a low transmittance portion (<40%), allowing for optimized light transmission and energy efficiency while meeting regulatory standards through a non-uniform transmittance pattern.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a uniform tinted lens is used in conventional lighting assemblies, then the assembly meets regulatory requirements for light distribution, but energy efficiency deteriorates due to increased energy usage and thermal heating
Solution Approach 1:
The optical element implements different transmittance properties in different regions: a first region with high transmittance (greater than 80%) for the light-emitting portion and a second region with low transmittance (less than 40%) for the non-light-emitting portion. This local differentiation allows the lighting assembly to meet regulatory requirements while reducing overall energy consumption by allowing more light to pass through where needed.
2Reliability
If a uniform tinted lens is used in conventional lighting assemblies, then the assembly meets regulatory requirements for light distribution, but thermal management deteriorates due to increased thermal heating
Solution Approach 1:
The optical element implements different transmittance properties in different regions: a first region with high transmittance (greater than 80%) for the light-emitting portion and a second region with low transmittance (less than 40%) for the non-light-emitting portion. This local differentiation reduces thermal heating in the housing by allowing selective light transmission, thereby improving thermal management while maintaining regulatory compliance.
3Stability of the object's composition
If a uniform tinted lens is used in conventional lighting assemblies, then the assembly provides consistent appearance, but light transmission efficiency deteriorates due to signal loss
Solution Approach 1:
The optical element implements different transmittance properties in different regions: a first region with high transmittance (greater than 80%) for the light-emitting portion and a second region with low transmittance (less than 40%) for the non-light-emitting portion. This local differentiation maximizes light transmission efficiency by allowing more light to pass through where needed while maintaining a consistent visual appearance from a distance.
Solution Approach 2:
The optical element is segmented into distinct regions with different transmittance properties: a first region for the light-emitting portion and a second region for the non-light-emitting portion. This segmentation allows each region to be optimized for its specific function, improving overall light transmission efficiency while maintaining aesthetic consistency.
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 enhances light distribution and energy efficiency by maximizing transmissivity in specific paths while minimizing signal loss, offering a visually appealing and regulatory-compliant lighting solution with reduced energy consumption and thermal issues.
Implementation Method 1
a first portion of transmittance defining high transmittance enabling greater that 80% of light transmission, and a second portion of transmittance defining a low transmittance enabling less than 40% of light transmission
Data Source
AI summary
An optical element or a lighting element assembly including an optical element, can include a first portion of transmittance defining high transmittance enabling greater that 80% of light transmission, and a second portion of transmittance defining a low transmittance enabling less than 40% of light transmission, wherein the second portion of transmittance encircles the first portion of transmittance.