Light Source Housing Fuse Mechanism for Diffuser Detachment Protection
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Solution Overview
Problem
Electronic devices with light sources, such as proximity sensors, face the risk of user harm due to high-intensity light exposure when the diffuser is detached or removed, as the light beam intensity increases significantly without diffusion.
Innovation Solution
A housing for the light source with a fuse mechanism that breaks if the diffuser is detached, ensuring the light source is deactivated to prevent harm, and conductive paths or plugs are used to maintain electrical connections within the housing, allowing for detection of diffuser detachment and automatic deactivation of the light source.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the diffuser is removed or detached from the device, then the light beam intensity increases and measurement distance can be extended, but the light source may cause harm to the user's eyes
Solution Approach 1:
The patent implements a protection mechanism that is预先 prepared and activated automatically when diffuser detachment is detected. The fuse or conductive path is designed in advance to break or open circuit upon diffuser removal, deactivating the light source before harm can occur. This preliminary protective structure ensures that the high-intensity light cannot operate without the diffuser in place.
Solution Approach 2:
The patent introduces an intermediary protection mechanism (fuse or conductive path) between the light source and the user. This intermediary element acts as a safety mediator that automatically interrupts the electrical connection when the diffuser is removed, preventing the harmful high-intensity light from reaching the user while still allowing the light source to function normally when the diffuser is properly installed.
2Reliability
If a protection mechanism is added to detect diffuser detachment, then user safety is improved, but the device complexity increases
Solution Approach 1:
The patent merges the protection mechanism with the existing electrical connection structure. The fuse or conductive path is integrated into the same electrical pathway that powers the light source, combining the functional electrical connection with the safety protection function. This merging approach allows the protection mechanism to be implemented without adding separate complex detection systems, thereby improving safety while minimizing increases in device complexity.
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 reduces the risk of user harm by ensuring the light source is deactivated when the diffuser is removed, while maintaining reliable electrical connections within the housing, thus preventing accidental exposure to high-intensity light.
Implementation Method 1
a fuse electrically coupling the first and second conducting columns, a portion of the fuse being mechanically fixed to the diffuser and/or the fuse being arranged to trap the diffuser in the mounting
Implementation Method 2
The light source used to generate the light beam is generally covered by a diffuser that spreads the beam and thereby reduces to some extent its intensity
Implementation Method 3
a diffuser having one or more conductive paths arranged to electrically connect the first and second conducting columns when the diffuser is mounted on the barrel
Data Source
AI summary
The disclosure concerns a housing for a light source mounted on a substrate, the housing comprising: a barrel comprising a mounting for a diffuser; and a diffuser positioned in the mounting, wherein the barrel comprises first and second conducting columns and a fuse or conductive wire electrically coupling the first and second conducting columns. A portion of the fuse is mechanically fixed to the diffuser and/or the fuse being arranged to trap the diffuser in said mounting.