Coaxial Optical Path Calibration for Multi-Photosensor Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing optical detection systems for laser processing face challenges in efficiently calibrating the optical path, particularly in aligning multiple photosensors with the optical signal radiation areas, which affects the signal-to-noise ratio and accuracy of signal analysis.
Innovation Solution
The optical detection device incorporates a calibration light source integrated within the device, which facilitates convenient calibration by aligning the photosensitive regions of multiple internal photosensors. This reduces the need for disassembly of internal optics and repeated calibration of internal optical paths, thereby improving user experience and alignment accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional external calibration methods are used, then calibration can be performed, but the alignment accuracy of photosensors with optical signal radiation areas deteriorates and the calibration process becomes complex
Solution Approach 1:
A calibration light source is introduced as an intermediary tool to facilitate the alignment process. This calibration light source emits light that passes through the same optical path as the actual detection signals, providing a visible reference for aligning the photosensitive regions of multiple photosensors with the optical signal radiation areas, thereby improving alignment accuracy without complicating the overall system
Solution Approach 2:
The optical detection device performs self-calibration by incorporating the calibration light source within the device itself. The calibration light source enables the device to automatically align its internal optical components without requiring external calibration equipment or complex external procedures, simplifying the calibration process while maintaining high alignment accuracy
2Adaptability or versatility
If multiple photosensors are used to detect different wavelength ranges, then the detection capability is improved, but the alignment complexity and calibration difficulty increase
Solution Approach 1:
The calibration light source serves as a universal intermediary that works with all photosensors simultaneously. It emits calibration light that passes through the beamsplitter pathway to align with each photosensor's optical path, providing a common reference for calibrating multiple photosensors with different wavelength ranges, thereby maintaining detection versatility while reducing calibration difficulty
Solution Approach 2:
The calibration light source is designed with multi-functionality to handle all photosensors uniformly. It can calibrate photosensors detecting different wavelength ranges (visible, infrared, etc.) through the same calibration mechanism, eliminating the need for separate calibration procedures for each photosensor type and reducing overall calibration 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 enhances the alignment accuracy and consistency of the internal optical path, leading to improved signal-to-noise ratio and accuracy of signal analysis during laser processing, while also simplifying the calibration process and reducing user inconvenience.
Implementation Method 1
the beamsplitter pathway is configured to receive radiated light from the external detection region entering the housing through the aperture, and split the radiated light into radiated light in at least two different wavelength ranges
Implementation Method 2
the calibration light source is arranged inside the housing, and is configured to radiate calibration light to the beamsplitter pathway, and radiate the calibration light to the external detection region through the aperture in the housing
Implementation Method 3
the first photosensor is configured to receive an optical signal in a first wavelength range from the beamsplitter pathway; the second photosensor is configured to receive an optical signal in a second wavelength range from the beamsplitter pathway
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The present disclosure provides an optical detection device and an optical path calibration method. The optical detection device includes: a housing 110, a beamsplitter pathway 120, a first photosensor 130, a second photosensor 132, and a calibration light source 134. An aperture 112 is arranged in the housing 110, and is configured to receive radiated light from an external detection region by the aperture 112. The housing 110 processes radiated light from the aperture 112 through the beamsplitter pathway 120, the first photosensor 130, and the second photosensor 132. The calibration light source 134 is arranged inside the housing 110, is configured to radiate calibration light to the beamsplitter pathway 120, and radiate the calibration light to the external detection region through the aperture 112 in the housing 110. The calibration light from the calibration light source 134 and the radiated light from the external detection region are coaxial.