LED Laser Radiation Detector and Indicator
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Solution Overview
Problem
Existing laser radiation detection systems are bulky and complex due to separate detectors and indicating elements, making them prone to failure and requiring additional components like color filters and LEDs for visibility in bright environments.
Innovation Solution
A compact design where light emitting diodes (LEDs) function as both detectors and indicators, arranged along straight lines, converting detected laser radiation into voltage, amplifying signals, and illuminating during 'dead time' to indicate position, eliminating the need for separate filters and reducing circuit complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate photodetectors and indicating LEDs are used, then detection and indication functions are fulfilled, but device complexity and bulkiness increase
Solution Approach 1:
The patent combines the photodetector and indicating LED into a single integrated component. The LED serves dual functions: as a light source for indication and as a photodetector for detecting laser radiation. This merging eliminates the need for separate detector and indicator components, reducing device complexity and bulkiness while maintaining both detection and indication functions.
Solution Approach 2:
The LED is designed to perform multiple functions simultaneously. It acts as both an indicating element (emitting light to show detection) and a receiving element (detecting laser radiation through its photodetector properties). This multi-functionality reduces the number of components needed and simplifies the overall device structure.
2Measurement precision
If large silicon surface photodetectors are used, then detection sensitivity is improved, but manufacturing cost increases
Solution Approach 1:
The LED utilizes its own structure and materials to serve both as indicator and detector. Instead of requiring separate specialized photodetector components with large silicon surfaces, the LED's inherent photodetector properties are exploited. This self-service approach allows the same component to perform both functions, reducing manufacturing costs associated with separate expensive photodetectors.
3Measurement precision
If color filters are added to photodetectors, then detection bandwidth is reduced for specific radiation, but detection precision for target wavelength is improved
Solution Approach 1:
The patent merges the filtering function into the LED component itself rather than adding separate color filters. The LED's spectral characteristics naturally provide wavelength selectivity, eliminating the need for additional filter components. This reduces device complexity while maintaining the ability to detect specific laser wavelengths with precision.
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
Enables precise detection and indication of laser radiation with a cost-effective, compact device capable of determining the position of laser beams in construction applications, reducing bulkiness and susceptibility to failure.
Implementation Method 1
converting detected laser radiation into voltage
Implementation Method 2
illuminating during 'dead time' to indicate position
Data Source
AI summary
The invention relates to an arrangement and a method for detecting and indicating laser radiation comprising a laser device (36) producing the laser radiation, such as rotation lasers or line lasers, and an indicating device (22) with at least one laser beam detector and at least one indicating element (26, 28, 30) which indicates the detected laser radiation. In order to precisely indicate the position of the laser radiation to be detected using uncomplicated circuitry, it is proposed that the at least one laser beam detector and the at least one indicating element are the same component in form of an LED (26, 28, 30).