Lighting Device Composite Micro-Structure Light Spot Reduction
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Solution Overview
Problem
Current tube lights have a wide light-emitting angle, leading to light spreading over a large area rather than being concentrated, and replacing light covers or increasing power does not meet energy-saving requirements.
Innovation Solution
A lighting device with a composite micro-structure light cover featuring two vertical portions and a curved portion with arc-shaped recesses, flat portions, first sawteeth, and second sawteeth, which offsets and concentrates light to reduce light spots and increase illuminance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the light cover is made more transparent, then the brightness is improved, but severe light spots are incurred
Solution Approach 1:
The light cover incorporates different micro-structures in different regions: the first light-transmitting portion has a first micro-structure that offsets light spots away from the central axis, while the second light-transmitting portion has a second micro-structure that offsets light spots towards the central axis. This local differentiation allows each region to address specific lighting issues, achieving overall uniform illumination without severe light spots.
Solution Approach 2:
The patent converts the harmful light spots into beneficial uniform illumination by using micro-structures that deliberately offset light paths. The first and second micro-structures create controlled light displacement that transforms concentrated light spots into distributed uniform lighting, turning a visual defect into a lighting advantage.
2Illumination intensity
If the power of the tube light is increased, then the brightness is improved, but the energy consumption is increased
Solution Approach 1:
The patent changes the optical parameters of the light cover by introducing specific micro-structures with defined geometries and distributions. These micro-structures modify light transmission characteristics to concentrate illumination in target areas while maintaining energy efficiency, achieving enhanced brightness without increasing power consumption.
3Reliability
If a transparent light cover is used, then the light transmission is improved, but light spots are severe
Solution Approach 1:
The light cover is divided into different regions with distinct micro-structures: the first light-transmitting portion contains a first micro-structure for offsetting light spots in one direction, while the second light-transmitting portion contains a second micro-structure for offsetting light spots in another direction. This local quality differentiation maintains high light transmission while eliminating severe light spots through region-specific optical control.
Solution Approach 2:
The light cover is segmented into multiple functional portions, each with its own micro-structure design. The first and second light-transmitting portions are separately engineered with different micro-structures to collectively address the light spot issue while maintaining overall transparency and efficient light transmission.
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 composite micro-structure effectively reduces the visual impact of light spots, increases illuminance in target areas, and meets energy-saving requirements by concentrating light without significant increases in cost or complexity.
Implementation Method 1
The inner surface of the curved portion has a plurality of arc-shaped recess and a plurality of flat portions alternately arranged... The integrated structure of these arc-shaped recesses and flat portions slightly offsets the light in the direction away from the central axis
Implementation Method 2
The shape of these second sawteeth reflects the light irradiated on the inner surface of the vertical portion... the light emitted by the light source is almost not transmitted through the vertical portions but is further concentrated towards the target area
Data Source
AI summary
A lighting device having composite micro-structure includes a main body, a light source board and a light cover. The main body has an installation slot. The light source board is disposed in the installation slot, and includes a circuit board and a light source disposed on one side of the circuit board. The light cover is disposed on one side of the main body to form an accommodating space between the light cover and the main body. The light source board being is disposed in the accommodating space. The light cover includes two vertical portions and a curved portion disposed between the vertical portions. The inner surface of the curved portion has a plurality of arc-shaped recess and a plurality of flat portions alternately arranged. The lighting device can achieve great lighting effects and increase the illuminance of a target area.