Light-guiding member with segmented holes for uniform brightness
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing light-emitting devices often suffer from uneven brightness, which can be conspicuous and difficult to address without increasing costs by adding more light sources.
Innovation Solution
A light-emitting device comprising a light source and a light-guiding member with a plate portion, a first hole for the light source, and multiple second holes between the first hole and the peripheral edge, where the light source emits light toward the side surface of the first hole, allowing light to exit from the outer surface of the light-guiding member and distribute uniformly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the number of light sources is increased to suppress uneven brightness, then the brightness uniformity is improved, but the device cost increases
Solution Approach 1:
The light-guiding member is segmented with multiple second holes provided at intervals along the peripheral edge, between the first hole and the peripheral edge. This segmentation allows light to exit through multiple distributed points, achieving uniform brightness distribution without requiring multiple light sources.
Solution Approach 2:
The second holes act as intermediary light exit points between the light source (first hole) and the peripheral edge. These intermediary holes distribute the light progressively along the peripheral edge, creating uniform brightness without direct illumination from multiple sources.
2Area of stationary object
If a light source is provided at the substrate with light incident on the light-guiding member, then the light can be emitted in a relatively wide area, but uneven brightness becomes conspicuous
Solution Approach 1:
Different regions of the light-guiding member are given different functions: the first hole serves as the light source entry point, while multiple second holes are strategically positioned at intervals to serve as light exit points. This local differentiation ensures uniform brightness distribution across the wide emission area.
Solution Approach 2:
The light propagation path is extended from a direct substrate-to-peripheral-edge path to a multi-dimensional path involving multiple exit holes distributed in space. This dimensional distribution of light exit points creates uniform brightness across the emission area.
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 effectively suppresses uneven brightness by ensuring that light is distributed more uniformly across the outer surface of the light-guiding member, enhancing the light emission state.
Implementation Method 1
a light-guiding member on which light emitted by the light source is incident and from which the light incident exits to an outside
Implementation Method 2
light emitted from the light source is incident from the side surface of the first hole and exits from the outer surface of the light-guiding member
Data Source
AI summary
A light-emitting device includes a light source and a light-guiding member on which light emitted by the light source is incident and from which the light incident exits to an outside, wherein the light-guiding member includes a plate portion having a planar shape, a first hole provided in the plate portion, the first hole being a hole in which the light source is disposed, and a plurality of second holes provided in the plate portion, the plurality of second holes being located between the first hole and a peripheral edge of the light-guiding member in plan view of the plate portion, the plurality of second holes being provided at intervals along the peripheral edge, and the light source emits light toward a side surface of the first hole.