Multi-Axial Light Guide Module with Curved Reflection
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Solution Overview
Problem
Existing light guide modules in electronic devices suffer from uneven light distribution, leading to discomfort and reduced visibility due to high light loss and limited multi-axial light-emitting capabilities, which restricts effective display across different angles and increases battery consumption.
Innovation Solution
A multi-axial light guide module with a curved light guide structure featuring multiple axial light-emitting planes, a display unit, and a light-guiding unit that enhances light emission efficiency by reducing light loss through optimized curvature and reflection designs, allowing light to be directed to various positions and displayed across multiple axes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a curved arc shape light guide is used to change light guidance direction, then light can be guided to different positions, but light loss increases significantly due to refraction and diffusion at the curved surface
Solution Approach 1:
The patent uses a curved surface reflection structure instead of a simple arc light guide. The curved surface is designed with specific radius of curvature to reflect light effectively while minimizing loss. The curvature allows light to be guided to different positions (improving adaptability) while the optimized reflective geometry reduces light loss compared to conventional arc guides.
Solution Approach 2:
The patent introduces a reflective layer as an intermediary between the light guide and the curved surface. This reflective layer captures light that would otherwise be lost through the curved surface and redirects it, thereby reducing overall light loss while maintaining the light guidance functionality.
2Ease of operation
If light-emitting tubes and light-emitting components are disposed on the circuit board to illuminate the back of the keypad, then indication function is achieved, but light distribution becomes uneven with portions close to the light source being much brighter and causing discomfort
Solution Approach 1:
The patent transitions from point-source illumination (light-emitting tubes on circuit board) to a distributed light guide structure that spreads light across the entire keypad surface. By using a light guide plate with curved surface reflection, light is distributed uniformly across the two-dimensional keypad area, eliminating the bright spots near the light source and dark areas farther away.
Solution Approach 2:
The patent applies different optical properties to different regions of the light guide structure. The curved surface reflection structure is designed with varying local geometries to control light distribution, ensuring uniform illumination across different areas of the keypad while maintaining comfortable viewing conditions.
3Device complexity
If a conventional light guide structure with single axial light-emitting plane is used, then device structure is simple, but light-emitting display is restricted to one angle and cannot provide effective display on other axes
Solution Approach 1:
The patent designs the light guide structure to perform multiple functions: it guides light from the light source, distributes it uniformly across the display area, and enables light emission from multiple axial planes. This multi-functional design allows the same structure to provide effective display from different viewing angles without requiring separate light guide components for each axis.
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 more uniform and efficient light-emitting display across different angles, reducing light loss and extending battery life while enabling effective message prompts and indications without angle restrictions.
Implementation Method 1
as the light guidance refracts to the connecting end 13a, due to the curve arc shape thereof
Implementation Method 2
a light-guiding unit disposed on the light-emitting portion of the light guide for increasing an efficiency of light emission in the light guide
Data Source
AI summary
A multi-axial light guide module comprises a light guide, a light-emitting unit, a display unit and a light-guiding unit. The light guide has a light-emitting portion connects to a curved portion, wherein the light-emitting portion has at least two axial light-emitting planes to generate at least two axial light-emitting effects; the display unit has a first axial display layer corresponding to a first axial light-emitting plane, and a second axial display layer corresponding to a second axial light-emitting plane; the light-guiding unit is disposed on the light emitting portion, so as to enhance the light-emitting efficiency of the light-emitting portion; and, through the display unit and the light-guiding unit, the light-emitting and display effects of the multi-axial light-emitting plane on the light-emitting portion can be improved. Thereby, users may conveniently see the light-emitting display from different axial planes, in order to achieve the purposes of message prompt and indication.