Adaptable Glare Class Light Emitting Device
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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, particularly in outdoor luminaires, which requires multiple optical elements with different G/G* classifications, increasing manufacturing and maintenance costs.
Innovation Solution
A light emitting device with a light shielding structure comprising reflective barriers and lenses, where light rays emitted at large angles are redirected through a light transmitting material, improving the G/G* classification by reducing light intensities at large angles without the need for multiple optical elements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If multiple optical elements with different G/G* classifications are used to reduce light intensities at large angles, then the G/G* classification is improved, but the device complexity and manufacturing costs increase
Solution Approach 1:
The single optical element is segmented into multiple functional zones: a first optical zone for primary light distribution, a second optical zone for redirecting light at large angles, and a third optical zone for additional light control. This segmentation allows different regions of the same element to perform different optical functions, effectively replacing multiple separate optical elements while maintaining reduced light intensity at large angles.
Solution Approach 2:
The single optical element is designed to perform multiple functions simultaneously: it acts as both a primary light distribution element and a glare reduction element through its integrated multi-zone structure. The first, second, and third optical zones collectively provide both illumination and glare control functions that would traditionally require separate optical components.
2Adaptability or versatility
If multiple optical elements with different G/G* classifications are manufactured to adapt to various road types and locations, then the adaptability is improved, but the manufacturing and maintenance costs increase
Solution Approach 1:
The single optical element with its multi-zone structure serves as a universal solution that can be applied across different road types and locations. By integrating multiple optical functions within one element, the system eliminates the need to manufacture and stock multiple specialized optical elements for different applications, thereby reducing manufacturing complexity and maintenance costs while maintaining adaptability.
Solution Approach 2:
The optical element's design parameters (zone configurations, refractive indices, surface profiles) can be adjusted to optimize performance for different road types and locations. This parametric flexibility allows a single base design to be adapted to various applications without requiring completely different optical elements, thus maintaining versatility while simplifying manufacturing.
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 solution effectively reduces light intensities at large angles, enhancing user comfort and achieving higher G/G* classifications at a lower cost by using a single light shielding structure that can be adapted for various applications.
Implementation Method 1
The first reflective inner surface is configured for reflecting the portion of the light rays in the direction of a second portion of the outer surface
Implementation Method 2
a portion of the light rays emitted by a first light source of the plurality of light sources is transmitted through a first lens of the plurality of lenses and through a first portion of the outer surface
Data Source
AI summary
Example embodiments relate to light emitting 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 plurality of lenses disposed on the carrier and covering the plurality of light sources. Each lens of the plurality of lenses includes a lens portion and a base portion surrounding said lens portion. Further, the light emitting device includes a light shielding structure including a plurality of reflective barriers, each having an outer surface and a first reflective inner surface. The outer surface is oriented such that a portion of the light rays emitted by a first light source of the plurality of light sources is transmitted through a first lens of the plurality of lenses and through a first portion of the outer surface.