Crooked Light Guide Post for Uniform Illumination
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Solution Overview
Problem
Conventional input devices with indicating lamps suffer from non-uniform light distribution due to the light gathering property of electronic lighting elements, causing discomfort to the user's vision.
Innovation Solution
The input device employs a modified light guide post with a length greater than the vertical distance between the electronic lighting element and the case perforation, and a crooked shape to prevent light focusing, ensuring even light distribution across the lamp cover.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the electronic lighting element is aligned with the case perforation and the light guide post length is equal to the vertical distance between them, then the assembly is simple and compact, but the light beams are focused on a spot causing non-uniform light distribution
Solution Approach 1:
The light guide post is designed with a crooked shape that extends in multiple dimensions rather than a straight vertical line. By increasing the post length beyond the vertical distance and introducing lateral extensions, the light paths are distributed across different spatial dimensions, preventing focal concentration and achieving uniform illumination across the lamp cover surface.
Solution Approach 2:
The light guide post employs an asymmetric crooked geometry instead of a symmetric straight configuration. This asymmetric design disrupts the light gathering property that would otherwise focus beams at a single point, scattering the light paths to achieve more uniform distribution across the entire lamp cover area.
2Illumination intensity
If the light guide post length is increased beyond the vertical distance, then the light distribution becomes uniform, but the device complexity increases
Solution Approach 1:
The crooked light guide post utilizes multi-dimensional spatial arrangement to achieve uniform light distribution. By extending the post beyond the vertical distance and introducing lateral components, the design distributes light paths across different dimensions, effectively preventing focal concentration while maintaining manufacturing simplicity.
Solution Approach 2:
The invention changes the geometric parameters of the light guide post by increasing its length beyond the vertical distance and introducing crooked configurations. These parameter modifications fundamentally alter the light transmission characteristics, transforming the light distribution from focused to uniform across the lamp cover.
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 results in a uniformly distributed light signal that is more pleasing to the eye and comfortable for the user, overcoming the issue of light gathering and spot-focused illumination in prior art devices.
Implementation Method 1
The light guide post is arranged between the case and the electronic lighting element for guiding the light beams
Data Source
AI summary
The present invention relates to an input device having an indicating lamp. The input device includes a case and an electronic lighting module. The electronic lighting module includes a printed circuit board, an electronic lighting element and a light guide post. The light guide post has a crooked shape. Due to the crooked shape, the light beams emitted by the electronic lighting element are no longer focused as a spot on the surface of the case.