Expansion Card Light-Homogenizing Device for Uniform Illumination
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Expansion cards with light-emitting devices often suffer from uneven light emission due to interference from heat-dissipating devices, leading to reduced illumination efficiency and potential damage from repeated startup and shutdown processes during testing.
Innovation Solution
A compact, detachable light-homogenizing device is integrated onto the circuit board, comprising a light-guiding body with diffusion and turning elements to distribute light beams evenly and assist in heat dissipation, protecting both electronic and light-emitting devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If heat-dissipating devices are disposed on the expansion card to solve heat dissipation problem, then heat dissipation capability is improved, but light beam uniformity deteriorates due to interference with light emission
Solution Approach 1:
The light-emitting structure is segmented into multiple light-emitting units arranged in an array, with light-guiding bodies positioned between them. This segmentation allows heat-dissipating devices to be placed on the circuit board without completely blocking any single light source, thereby maintaining light beam uniformity while preserving heat dissipation capability.
Solution Approach 2:
Light-guiding bodies are introduced as intermediary elements between the light-emitting devices and the external environment. These light-guiding bodies redirect and distribute light beams, ensuring uniform illumination even when heat-dissipating devices are present on the circuit board, thus resolving the conflict between heat dissipation and light uniformity.
2Reliability
If light-emitting device is used to indicate expansion card status, then device functionality is improved, but illumination efficiency deteriorates due to uneven light emission
Solution Approach 1:
The light-guiding bodies extend in the vertical dimension above the circuit board, redirecting light beams from multiple light-emitting units to create a unified, uniform illumination pattern. This dimensional extension allows the system to maintain high illumination efficiency while preserving the functional status indication capability.
3Manufacturing precision
If repeated startup and shutdown processes are performed for testing expansion cards, then testing completeness is improved, but system reliability deteriorates due to potential electronic device damage
Solution Approach 1:
The patent introduces light-emitting devices that provide visual feedback on expansion card compatibility and installation status. This parameter change from physical manipulation to optical indication allows for non-contact testing and status verification, enabling repeated testing cycles without causing electronic device damage while maintaining testing completeness.
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 homogenized light output, enhances illumination efficiency, and protects electronic components from heat damage while facilitating easier testing and installation processes.
Implementation Method 1
The light-diffusion element is configured to diffuse plural light beams entering into the light-guiding body from the light-emitting device
Implementation Method 2
The light-turning element is configured to turn the directions of portion of the light beams
Data Source
AI summary
An expansion card with homogenized light outputs and light-homogenizing device thereof are disclosed. The expansion card includes a circuit board and a light-homogenizing device. The circuit board includes a light-emitting device disposed on a first side edge. The light-homogenizing device includes a light-guiding body, a light-diffusion element, and a light-turning element. The light-guiding body includes a light-input side and a light-output side opposite to each other, and the light-input side is adjacent to the first side edge. The light-diffusion element is disposed on the light-input side of the light-guiding body and opposite to the light-emitting device. The light-diffusion element and the light-out side are configured to diffuse the light beams entering into the light-guiding body from the light-emitting device and form a light-transmitting path. The light-turning element is disposed in the light-guiding body, located on the light-transmitting path and configured to turn the directions of portion of the light beams.