Arc-Shaped Optical Housing for Uniform Multi-Wavelength Diagnostics
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Solution Overview
Problem
Existing in vitro diagnostic devices face challenges in maintaining uniform light intensity across multiple wavelengths and ensuring measurement reliability due to circuit deterioration and mechanical wear, leading to deviations in performance and sensitivity.
Innovation Solution
A diagnostic device with a housing featuring an arc-shaped inner bottom surface and multiple LEDs of different wavelengths, coupled with a two-dimensional image sensor and control circuit board, which includes light holes and a diffuser plate to correct measurement errors and maintain uniform sensitivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple light sources with different wavelengths are spatially distributed in separate measurement spaces, then multiple test items can be measured simultaneously, but light intensity uniformity across all wavelengths deteriorates
Solution Approach 1:
The device divides the measurement system into multiple independent measurement spaces (wells), each with its own light source and light sensor. This segmentation allows simultaneous measurement of multiple test items while maintaining uniform light intensity in each space through dedicated optical paths.
Solution Approach 2:
Each measurement well is equipped with light sources and sensors specifically optimized for local measurement requirements. The light sources are positioned and configured to provide uniform illumination within each local measurement space, ensuring consistent measurement quality across all wavelengths without compromising overall system productivity.
2Volume of moving object
If light sources and sensors are arranged in a compact configuration, then device size is reduced, but measurement reliability deteriorates due to optical interference and non-uniform light distribution
Solution Approach 1:
The device utilizes vertical stacking of measurement wells and optical components to achieve compact horizontal footprint while maintaining adequate optical path lengths. By transitioning from horizontal to vertical arrangement, the device reduces overall size without compromising measurement reliability through proper light distribution.
Solution Approach 2:
Multiple measurement wells and optical components are nested within each other in a compact configuration. The housing contains arc-shaped light guides that efficiently distribute light from centralized sources to multiple nested measurement spaces, achieving space efficiency while maintaining measurement reliability.
3Ease of manufacture
If conventional flat housing design is used, then manufacturing is simpler, but light distribution uniformity across measurement wells deteriorates
Solution Approach 1:
The housing incorporates an arc-shaped light guide surface that curves to evenly distribute light from the light sources across all measurement wells. This curved geometry naturally redirects light paths to achieve uniform illumination across the array of wells, improving light distribution uniformity while remaining manufacturable through standard molding techniques.
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 device ensures accurate and reliable multi-wavelength measurements by uniformly distributing light and correcting for variations, enhancing measurement reproducibility and accuracy.
Implementation Method 1
a housing with an inner bottom surface having an arc shape that rises upward from one side where the light source is arranged to the another side where the cartridge sensing surface is arranged
Implementation Method 2
a two-dimensional image sensor arranged in the upper housing to photograph at least the plurality of sensing holes through the observation window
Implementation Method 3
a diffuser plate that forms part of its bottom surface to fit closely with the lower housing and evenly disperses light
Data Source
AI summary
A diagnostic device with an improved optical system is disclosed. The disclosed in vitro diagnostic device has a housing with an inner bottom surface having an arc shape that rises upward from one side where the light source is arranged to the other side where the cartridge sensing surface is arranged. This device may include light sources with different wavelengths arranged on one side of the lower housing. Additionally, it may include an upper housing that is coupled to the upper surface of the lower housing and has a cartridge insertion space for a cartridge with a plurality of wells. The upper housing includes an observation window that covers at least the plurality of sensing hole areas to allow optical observation of the inside of the wells.