Photoresistor Laser Failure Detection in Phosphor Light Circuits
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Solution Overview
Problem
Existing laser light generating systems face safety issues due to potential high-intensity laser light exposure during system failures, such as phosphor damage or optical component breakdown, leading to increased risk of direct laser emission into the ambient environment.
Innovation Solution
A light generating system comprising a solid-state light source, a luminescent material element, and a sensor element with a photo-resistor integrated into the electrical circuit, which adjusts resistance based on light exposure to prevent laser power from being provided when system failures occur, thereby reducing the risk of unsafe laser light emission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If additional sensors and control units are added to detect laser failures, then safety monitoring capability is improved, but device complexity increases and false tripping occurs
Solution Approach 1:
The patent combines the safety monitoring function with the existing electrical circuit by integrating a sensor element directly into the circuit. This eliminates the need for separate control units and additional sensors, reducing device complexity while maintaining safety monitoring capability. The sensor element works together with existing circuit components to detect failures and terminate laser power.
Solution Approach 2:
The sensor element serves multiple functions: it monitors laser operation, detects system failures, and triggers power termination. By making the sensor element multi-functional and integrating it into the existing electrical circuit, the patent avoids adding dedicated control units while achieving comprehensive safety monitoring.
2Measurement precision
If sensor sensitivity is increased to detect failures accurately, then detection precision is improved, but false tripping increases
Solution Approach 1:
The patent implements a feedback mechanism where the sensor element continuously monitors the electrical circuit and provides feedback about system state. When a failure is detected, the feedback triggers power termination. This closed-loop feedback system allows for accurate failure detection while maintaining system stability and reducing false tripping through continuous monitoring and responsive control.
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 system effectively lowers or blocks laser light output in case of system failure without the need for additional sensors and control units, minimizing the risk of false tripping and ensuring user safety by automatically terminating power to the light source when failures are detected.
Implementation Method 1
the sensor component comprises a photo-resistor, wherein the photo-resistor has a variable resistance dependent on an extend of exposure to a light selected from the group consisting of the laser light and the luminescent material light
Implementation Method 2
the luminescent material is configured to convert at least part of the light source light into luminescent material light
Data Source
AI summary
The invention provides a light generating system (1000) comprising a solid state light source (100), a luminescent material element (210), a sensor element (400), and an electrical circuit (500), wherein: (a) the solid state light source (100) is configured to generate light source light (101), wherein the solid state light source (100) is functionally coupled to the electrical circuit (500); (b) the luminescent material element (210) comprises a luminescent material (200), wherein the luminescent material element (210) is configured in a light receiving relationship with the solid state light source (100), and wherein the luminescent material (200) is configured to convert at least part of the light source light (101) into luminescent material light (201); and (c) the sensor element (400) comprises a sensor component (410), wherein the sensor element (400) is comprised by the electrical circuit (500), wherein the sensor component (410) comprises a photo-resistor, wherein the photo-resistor has a variable resistance dependent on an extend of exposure to a light (11) selected from the group consisting of the laser light (100) and the luminescent material light (201).