Annular LED Lamp with Engraved Light-Guide Plate
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Solution Overview
Problem
LED lighting equipment faces challenges in achieving homogeneous lighting and large illuminating surfaces due to its point-like nature, requiring complex optical systems that also limit design flexibility and aesthetic appeal.
Innovation Solution
An LED lighting lamp design that uses a light-guide plate with a specifically engineered engraving pattern to laterally emit and extract light, ensuring uniform light extraction and perception across the surface, allowing for both functional and aesthetically original designs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If complex optical systems are used to achieve homogeneous lighting and large illuminating surfaces, then lighting homogeneity and surface area are improved, but device complexity and overall dimensions increase
Solution Approach 1:
The patent extracts the light guide function from complex optical systems and integrates it directly into the lampshade structure. The lampshade itself becomes the light guide, eliminating the need for separate complex optical components while achieving homogeneous lighting distribution.
Solution Approach 2:
The patent merges the lampshade and light guide into a single integrated component. The lampshade structure simultaneously serves as both the protective enclosure and the light distribution medium, simplifying the overall device while maintaining lighting homogeneity.
2Illumination intensity
If complex optical systems are used to achieve homogeneous lighting and large illuminating surfaces, then lighting homogeneity and surface area are improved, but design freedom and aesthetic appeal are limited
Solution Approach 1:
The lampshade serves multiple functions simultaneously: it provides structural support, acts as the light guide for homogeneous illumination, and functions as the aesthetic outer shell. This multi-functionality eliminates the need for separate optical components that would constrain design freedom.
Solution Approach 2:
The patent applies different optical properties to different regions of the lampshade through selective coating or material composition. This allows tailored light distribution in specific areas while maintaining overall design freedom and aesthetic appeal.
3Use of energy by moving object
If LED light sources are used, then energy efficiency is improved, but lighting width and homogeneity deteriorate due to point-like nature
Solution Approach 1:
The patent transitions from point-source LED illumination to surface-based light distribution by embedding LEDs within the three-dimensional structure of the lampshade. This dimensional change allows the light to be distributed across a larger area while maintaining homogeneity.
Solution Approach 2:
The lampshade material acts as an intermediary between the point-source LEDs and the surrounding environment. It captures light from the LEDs and redistributes it uniformly across its surface, achieving homogeneous illumination without requiring complex optical systems.
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 provides a uniform and homogeneous lighting effect suitable for various environments, maintaining transparency when off and ensuring compliance with UGR standards, while allowing for original and attractive shapes.
Implementation Method 1
The extraction takes place due to the surface irregularity formed on the light-guide plate that no longer retains the light rays inside by total internal reflection
Implementation Method 2
The extraction takes place due to the surface irregularity formed on the light-guide plate
Implementation Method 3
optical-physical constants of volumetric scattering of the light-guide plate material
Data Source
AI summary
An LED lighting lamp comprises an essentially annular perimetric frame positioned about an axis; a plurality of LEDs arranged along a radially inner perimetric edge of the frame and angularly spaced apart from one another about the axis; and a substantially flat and completely transparent light-guide plate, having two opposite faces substantially perpendicular to the axis and a radially outer perimetric edge facing the LEDs; at least one face of the light-guide plate is provided with an engraving pattern, formed by a plurality of notches shaped so as to extract light from the light-guide plate through said at least one face.