Vehicle Lighting Module With Scattering Filter For Homogeneous Illumination
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing vehicle lighting devices with direct LED illumination suffer from manufacturing complexity, non-homogeneous light distribution, and increased installation depth, which complicates achieving both uniform illumination and animation capabilities.
Innovation Solution
A lighting module design featuring a transparent optical filter with a spatial optical structure between the LED and the light-emitting surface, scattering light to achieve homogeneous illumination with minimal thickness and allowing for animated or segmented illuminations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If LEDs are placed directly behind the light-emitting surface for direct illumination, then animation control and segmented illumination capability are improved, but light homogeneity deteriorates and installation depth increases
Solution Approach 1:
A transparent optical filter is introduced as an intermediary element between the LED and the light-emitting surface. This filter includes a scattering layer that diffuses the light from the LED, achieving homogeneous illumination while maintaining the direct lighting configuration that enables animation control and segmented illumination capability.
2Adaptability or versatility
If LEDs are placed directly behind the light-emitting surface for direct illumination, then animation control and segmented illumination capability are improved, but installation depth increases
Solution Approach 1:
The transparent optical filter with scattering layer serves as a compact intermediary that achieves light diffusion within a minimal thickness, enabling direct illumination configuration with reduced installation depth while preserving animation control capability.
3Illumination intensity
If standard primary optics are used to control light homogeneity, then light distribution control is improved, but installation depth increases
Solution Approach 1:
The patent replaces traditional mechanical/optical systems (standard primary optics) with a scattering layer integrated into the transparent optical filter. This substitution achieves light homogenization through scattering mechanisms rather than complex optical elements, significantly reducing the required installation depth.
4Illumination intensity
If the transparent optical filter with spatial optical structure is used, then light homogeneity and minimal thickness are achieved, but manufacturing complexity increases
Solution Approach 1:
The spatial optical structure on the lower surface of the transparent optical filter is designed with specific geometric parameters (spatial frequency, amplitude) that can be optimized to balance light scattering performance with manufacturability. By carefully selecting these parameters, the patent achieves effective light homogenization while maintaining compatibility with standard manufacturing processes.
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 simplifies manufacturing, reduces installation depth, and provides highly homogeneous illumination with the ability to create animated or segmented surfaces, enhancing design variability and light output uniformity.
Implementation Method 1
The spatial optical structure is adapted to scatter light from the housing cavity to the upper surface of the filter and at the same time is adapted to scatter light reflected from the upper surface of the filter back to the spatial optical structure
Implementation Method 2
the upper surface of the transparent optical filter is adapted to reflect most of the light from the LED back to the lower surface of the transparent optical filter
Data Source
AI summary
A lighting module including a housing with a cavity enclosed with a light-emitting surface and in which an LED is mounted connectable to a power source and possibly also to a control circuit. Between the LED and the light-emitting surface is arranged a transparent optical filter having an upper surface and a lower surface. The upper surface is adapted for the passage of a minor portion of light from the cavity of the housing to the light-emitting surface and, at the same time, the upper surface is adapted to reflect most of the light from the cavity of the housing back to the lower surface. On the lower surface of the transparent optical filter facing the LED is arranged a spatial optical structure adapted to scatter light from the cavity of the housing onto the upper surface and at the same time is adapted to scatter light reflected from the upper surface back to the spatial optical structure opposite the bottom of the cavity of the housing and possibly also opposite the side surfaces of the cavity of the lighting module.