Ring Light Guide with Optical Structures for Uniform Brightness
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Solution Overview
Problem
Existing ring light solutions, whether using multiple LEDs or flexible light bars, face challenges in achieving uniform brightness and aesthetically pleasing designs, leading to high costs and dark areas in joint regions, which do not meet refined appearance requirements.
Innovation Solution
A ring light guide with a light incident portion aligned with the extension direction of the ring body, featuring optical structures with increasing density along the ring, allows for uniform brightness distribution using a limited number of light sources, and a light source module incorporating a reflector and diffuser to enhance light homogeneity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If multiple LEDs are evenly arranged along the ring to achieve uniform brightness, then the brightness uniformity is improved, but the cost increases due to the large amount of LEDs required
Solution Approach 1:
The invention divides the ring light guide into multiple sections along its extension direction, with each section containing a limited number of light sources. Optical structures are distributed throughout to guide and redistribute light, segmenting the illumination function across multiple components rather than relying on numerous discrete LEDs arranged around the entire ring.
Solution Approach 2:
The invention introduces optical structures as intermediary elements between the light sources and the ring light guide. These optical structures guide light from a limited number of sources along the extension direction and distribute it uniformly across the entire ring, acting as mediators that transform concentrated light input into uniform ring illumination.
2Device complexity
If a flexible light bar is bent into a ring shape to achieve ring lighting, then the device complexity is reduced, but dark areas appear in the joint area of the light bar
Solution Approach 1:
The invention applies different optical properties to different regions of the ring light guide. Optical structures are distributed with varying density along the extension direction, with higher density in regions that need more light guidance. This local differentiation ensures uniform brightness distribution, particularly addressing the joint area problem without requiring complex structural modifications.
Solution Approach 2:
The invention transitions from a simple one-dimensional flexible light bar to a three-dimensional ring light guide structure with optical structures distributed throughout its volume. This dimensional transformation allows light to be guided and distributed in multiple directions, eliminating the dark joint areas that occur in bent light bars while maintaining structural simplicity.
3Quantity of substance
If a limited amount of light sources is used to reduce cost, then the cost is optimized, but achieving uniform brightness distribution becomes difficult
Solution Approach 1:
The invention uses optical structures as intermediary elements that guide and redistribute light from a limited number of sources. These optical structures are distributed along the ring light guide's extension direction, capturing light from the sources and guiding it to multiple locations, thereby achieving uniform brightness distribution without requiring a large number of light sources.
Solution Approach 2:
The invention changes the spatial distribution parameter of optical structures along the ring light guide, with density increasing from the light incident surface along the extension direction. This parameter variation optimizes light guidance efficiency, ensuring that limited light sources can achieve uniform illumination across the entire ring by strategically positioning optical elements in high-density regions.
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 achieves cost optimization and uniform light distribution with reduced maintenance costs by using fewer light sources, ensuring efficient and aesthetically pleasing ring-shaped lighting.
Implementation Method 1
the plurality of optical structures guiding the light along the extension direction of the ring body to emit out of the ring body from the light exit surface
Implementation Method 2
the reflector disposed on the bottom surface of the ring body to reflect the light toward the light exit surface
Implementation Method 3
the diffuser disposed on the light exit surface to homogenize the light emitted from the light exit surface
Data Source
AI summary
A light source module includes a ring light guide, at least one light source, a reflector, and a diffuser. The ring light guide includes a ring body and at least one light incident portion. The ring light guide has a light exit surface and a bottom surface, which are two opposite ring surfaces of the ring body. The ring body has a plurality of optical structures disposed along the ring body. The at least one light incident portion is disposed on the ring body and protrudes from a lateral side of the ring body. The light incident portion has a light incident surface, wherein a plane where the light incident surface lies crosses a plane where the light exit surface lies.