Lens With Auxiliary Surface For Concentrated Light Distribution
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Solution Overview
Problem
Existing LED lighting fixtures face issues with large thickness, high cost, and inefficient light distribution, as well as an inability to adjust beam angles.
Innovation Solution
A lighting fixture design featuring a lens with a light incident portion and a light-emitting portion, including a main and auxiliary light-emitting surfaces, and convex portions that facilitate light concentration and adjustable beam angles through a step shaft and restrictive holes for adjusting the distance between installation components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If TIR lens is used for light focusing, then light distribution is improved, but thickness increases and cost increases
Solution Approach 1:
The lens is divided into multiple light-emitting surfaces (first, second, third light-emitting surfaces) with different orientations. Each surface focuses light in a specific direction, achieving comprehensive light distribution without requiring a thick single-element TIR lens. This segmentation allows the lens to maintain a thin profile while providing effective light control.
Solution Approach 2:
The patent combines refractive elements (lens surfaces) and reflective elements (reflective surface) into a single integrated lens structure. The reflective surface works in conjunction with the light-emitting surfaces to redirect and focus light, eliminating the need for separate reflector components and reducing overall thickness while maintaining effective light distribution.
2Illumination intensity
If reflector is used for light focusing, then light distribution is improved, but thickness increases and beam angle cannot be adjusted
Solution Approach 1:
The lighting fixture incorporates an adjustable mechanism that allows the lens or light source to be positioned at different angles relative to the housing. This dynamic adjustment capability enables the beam angle to be changed according to different lighting requirements, making the fixture versatile for various applications while maintaining a thin profile through the use of multiple oriented light-emitting surfaces.
3Illumination intensity
If lens plus reflector is used for light focusing, then light distribution is improved, but thickness increases
Solution Approach 1:
The patent integrates the functions of both lens and reflector into a single unified lens structure. The lens includes multiple light-emitting surfaces for refraction and a reflective surface for reflection, all within one thin component. This merging eliminates the need for separate lens and reflector assemblies, significantly reducing thickness while maintaining effective light distribution through the combined optical actions.
4Device complexity
If existing LED lighting fixture design is used, then structure is simple, but beam angle cannot be adjusted
Solution Approach 1:
The patent introduces an adjustable mechanism that allows the optical components (lens or light source) to be positioned at different angles. This dynamic feature enables beam angle adjustment while maintaining relatively simple construction through the use of a modular lens design with integrated reflective surfaces, avoiding the need for complex multi-component assemblies.
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 design enhances light concentration and allows for adjustable beam angles, improving light distribution efficiency and reducing the overall thickness and cost of the lighting fixture.
Implementation Method 1
a surface of the convex portion away from the main light incident surface forms a reflective surface, and the reflective surface is a total reflective surface
Data Source
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AI summary
The present application relates to a lens and a lighting fixture, the lens includes a light incident portion and a light-emitting portion, the light-emitting portion includes a main light-emitting surface and an auxiliary light-emitting surface surrounding the main light-emitting surface. The main light-emitting surface and the auxiliary light-emitting surface protrude toward a side away from the light incident portion, the auxiliary light-emitting surface is a curved surface. The auxiliary light-emitting surface has a protruding height gradually decreasing in a direction away from the main light-emitting surface. The lighting fixture includes a lamp housing, a light-emitting assembly, and a light distribution assembly, the light distribution assembly includes the above lens. The light distribution assembly further includes an installation plate, the lens is arranged on the installation plate, and the installation plate is provided with a step shaft. The step shaft has at least three shaft sections, and an interface of every two adjacent shaft sections among the three shaft sections forms a restrictive surface. The light-emitting assembly includes a light plate, the light plate is provided with at least two restrictive holes with different apertures, the step shaft is fitted with the restrictive holes in a plug-in manner, and the restrictive holes are restrictively fitted with the restrictive surfaces. Compared with the existing flat light-emitting surface, the shape of the light-emitting portion of the present application enables the light emitted by the lens to be more concentrated.