Faceted Area Optical Cover for Linear Light Source
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Solution Overview
Problem
Existing lighting applications using linear light sources often suffer from inefficient and undesirable light distribution due to uncontrolled light emission, which can lead to glare and uneven lighting. Conventional optics used to address this issue can be heavy, costly, inefficient, and aesthetically unpleasing.
Innovation Solution
The use of an area optical cover with a faceted surface for linear light sources, where the inner surface of the optical cover forms a plurality of facets that refract light in a controlled manner, optimizing light distribution within a selected range, typically up to 30 degrees from the nadir.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If conventional optics are used to control light distribution, then light distribution control is improved, but weight increases
Solution Approach 1:
The optical surface is segmented into multiple discrete facets instead of using a continuous conventional optic. Each facet is a separate geometric element that collectively provides the desired light redistribution function while using significantly less material.
Solution Approach 2:
The invention changes the geometric parameters of the optical surface by using faceted geometry with specific angles and orientations. The facets are configured with precise angular relationships to control light refraction and redistribution, achieving the desired optical performance through geometric parameter optimization rather than material volume.
2Illumination intensity
If conventional optics are used to control light distribution, then light distribution control is improved, but cost increases
Solution Approach 1:
The optical surface is segmented into multiple discrete facets instead of using a continuous conventional optic. Each facet is a separate geometric element that collectively provides the desired light redistribution function while using significantly less material.
Solution Approach 2:
The invention changes the geometric parameters of the optical surface by using faceted geometry with specific angles and orientations. The facets are configured with precise angular relationships to control light refraction and redistribution, achieving the desired optical performance through geometric parameter optimization rather than material volume.
3Illumination intensity
If conventional optics are used to control light distribution, then light distribution control is improved, but optical efficiency decreases
Solution Approach 1:
The optical surface is segmented into multiple discrete facets instead of using a continuous conventional optic. Each facet is a separate geometric element that collectively provides the desired light redistribution function while using significantly less material.
Solution Approach 2:
The invention changes the geometric parameters of the optical surface by using faceted geometry with specific angles and orientations. The facets are configured with precise angular relationships to control light refraction and redistribution, achieving the desired optical performance through geometric parameter optimization rather than material volume.
4Illumination intensity
If conventional optics are used to control light distribution, then light distribution control is improved, but appearance deteriorates
Solution Approach 1:
The optical surface is segmented into multiple discrete facets instead of using a continuous conventional optic. Each facet is a separate geometric element that collectively provides the desired light redistribution function while using significantly less material.
Solution Approach 2:
The invention changes the geometric parameters of the optical surface by using faceted geometry with specific angles and orientations. The facets are configured with precise angular relationships to control light refraction and redistribution, achieving the desired optical performance through geometric parameter optimization rather than material volume.
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 provides a cost-effective, efficient, and aesthetically pleasing means to control light distribution, reducing glare and ensuring that light is directed where needed, while maintaining a smooth outer surface for improved appearance.
Implementation Method 1
Each of the facets forms a refractive surface that is configured to refract a corresponding portion of the light from the light source
Data Source
AI summary
An area optical cover for a linear light source extends along an axial direction. The optical cover includes a portion of an optical material that forms a constant cross-section transverse to the axial direction. An outer surface of the cross-section is substantially planar, and an inner surface of the cross-section forms a plurality of facets. Each of the facets forms a refractive surface that is configured to refract a corresponding portion of light from the light source, and a return surface that connects the refractive surface with a refractive surface of an adjacent facet. When the outer surface is oriented horizontally on a lower side of the portion of the optical material, and the linear light source is positioned at an installation height above the inner surface, all facets within at least 30 degrees of nadir from the light source are optimized to provide a selected light distribution.