Self-Calibrating Weak Light Detection via Diffuse Reflection Cavity
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Solution Overview
Problem
Conventional weak light detection devices for chemiluminescent immunodetection face issues such as temperature drift and device aging, leading to inconsistent responses and requiring complex calibration systems, which are costly, difficult to assemble, and have low mass production efficiency.
Innovation Solution
A self-calibrating weak light detection device is developed, featuring a signal optical system and a reference optical system with a diffuse reflection cavity and a diaphragm, which allows for drift calibration and accurate measurement of optical signals without the need for complex optical devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional calibration optical path systems with reflectors, spectroscopes, and filters are used to solve temperature drift and aging problems, then measurement precision is improved, but device complexity increases and manufacturing precision requirements become stricter
Solution Approach 1:
The patent extracts and eliminates complex optical components (reflectors, spectroscopes, filters) from the calibration system, retaining only the essential light source and detector. This simplification maintains calibration functionality while dramatically reducing device complexity and assembly requirements.
Solution Approach 2:
Instead of using multiple optical elements to control and direct light through complex paths, the patent inverts the approach by using a simple integrated cavity where the light source and detector face each other directly. This reversal of the conventional optical path design eliminates the need for intermediate optical components.
2Measurement precision
If complex calibration systems with multiple optical components are implemented to address temperature drift, then measurement precision is improved, but ease of manufacture deteriorates due to high assembly and debugging requirements
Solution Approach 1:
The patent merges the light source, detection area, and calibration function into a single integrated cavity structure. This consolidation eliminates the need for separate optical components and their associated alignment procedures, dramatically improving ease of manufacture while maintaining response consistency.
3Measurement precision
If conventional calibration systems with multiple optical components are used to solve aging effects, then measurement precision is improved, but productivity decreases due to low mass production efficiency
Solution Approach 1:
The patent segments the calibration function from the complex optical system and integrates it directly into the cavity structure. This modular integration allows the calibration device to be manufactured as a single unit, significantly improving mass production efficiency while maintaining calibration accuracy.
4Measurement precision
If complex calibration optical systems are implemented to address temperature drift, then measurement precision is improved, but reliability decreases due to increased risk coefficient of instability
Solution Approach 1:
The patent converts the potential harm of temperature drift and aging into a benefit by designing a calibration system that is inherently insensitive to these factors. The simple integrated cavity design with direct light source-detector facing arrangement eliminates multiple optical interfaces that could be affected by environmental changes, thereby improving reliability while maintaining calibration accuracy.
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 self-calibrating device achieves improved accuracy and stability in weak light detection, simplifies the structure, reduces costs, and enhances mass production efficiency while minimizing the impact of temperature drift and device aging.
Implementation Method 1
a reference optical system (30) which provides a standard light source for calibration, comprising a diffuse reflection cavity (31)
Implementation Method 2
a signal optical system (20) for collecting signal light and converting the signal light into electrical signal
Data Source
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AI summary
A self-calibrating weak light detection device comprises a housing provided with a photon counting module and a reference optical system therein. The reference optical system is used to calibrate a signal optical system, and comprises: a diffuse reflection cavity; a reference light source and a photoelectric detector provided in the diffuse reflection cavity; a photoelectric control panel; and a diaphragm in communication with the photon counting module and the diffuse reflection cavity. The photoelectric control panel is electrically connected to the reference light source, the photon counting module and the photoelectric detector. The diaphragm communicates with a detection compartment and a reference compartment.