Adaptable Glare Class Light Emitter With Reflective Barrier Walls
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Solution Overview
Problem
Conventional light emitting devices face challenges in reducing light intensities at large angles, leading to glare and discomfort, requiring costly and complex optical elements to achieve improved G/G* classifications, which increases manufacturing and maintenance costs.
Innovation Solution
A light emitting device with a light shielding structure featuring closed reflective barrier walls and a reflective surface that reduces the solid angle of light beams by cutting off or reflecting light rays with large incident angles, improving the G/G* classification while allowing for cost-effective and adaptable solutions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If improved optical elements are developed and manufactured to reduce light intensities at large angles, then the G/G* classification is improved, but manufacturing costs and investment costs increase significantly
Solution Approach 1:
The optical element is segmented into multiple zones with different refractive indices or optical properties. By dividing the lens into radial zones or annular segments, each zone can control light distribution independently, allowing reduction of glare at large angles while maintaining standard manufacturing processes for each segment
Solution Approach 2:
Different regions of the optical element are given different optical characteristics. The central region maintains high transmission for useful light, while peripheral regions are designed with specific refractive indices or surface profiles to redirect or block glare-causing rays at large angles, achieving improved G/G* classification without requiring complete redesign of the entire optical system
2Illumination intensity
If different types of optical elements are manufactured for each G/G* classification, then the G/G* classification requirement is met, but the amount of different optical elements to be manufactured increases
Solution Approach 1:
A single optical element design incorporates multiple functional zones that can be activated or deactivated to achieve different G/G* classifications. By using adjustable shutters, variable refractive index materials, or selectable zone configurations, the same optical element can adapt to meet different glare classification requirements (G1 through G6) and various road types, eliminating the need to manufacture separate optical elements for each classification
3Adaptability or versatility
If multiple categories of optical elements are manufactured for different road types and locations, then customer needs are met, but development, manufacturing, and maintenance costs increase
Solution Approach 1:
The optical element incorporates dynamic adjustment capabilities that allow it to change its light distribution characteristics in real-time or for different operating conditions. This may include adjustable mechanical shutters, electro-optical materials that change properties with applied voltage, or movable components that redirect light based on the specific road type and location requirements, enabling a single optical element design to serve multiple applications
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 light shielding structure effectively reduces light intensities at large angles, enhancing user comfort and allowing for various G/G* classifications with a single optical element, thereby reducing development and manufacturing costs.
Implementation Method 1
a reflective surface connecting the interior bottom edge and the interior top edge and surrounding one or more associated lenses of said plurality of lenses
Data Source
AI summary
Example embodiments relate to light emitter devices with adaptable glare classes. One example light emitting device includes a carrier. The light emitting device also includes a plurality of light sources disposed on the carrier. Additionally, the light emitting device includes a lens plate disposed on the carrier. The lens plate includes a flat portion and a plurality of lenses covering the plurality of light sources. Further, the light emitting device includes a light shielding structure mounted on said lens plate. The light shielding structure includes a plurality of closed reflective barrier walls, each having an interior bottom edge disposed on the flat portion, an interior top edge at a height above the flat portion, and a reflective surface connecting the interior bottom edge and the interior top edge and surrounding one or more associated lenses of the plurality of lenses. The height is at least 2 mm.