Selectively Transparent Breathing Tube Holder for IR Coding
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Solution Overview
Problem
The reliability of reading out coding elements on breathing tubes used in lung function diagnostics is often lower than desired due to issues with stray light interference, which affects the sensitivity and selectivity of detection systems.
Innovation Solution
A holding device made from selectively transparent material that allows light in a specific wavelength range to pass through while blocking stray light, enabling more reliable reading of coding structures on breathing tubes without the need for light breakthroughs, and simplifying manufacturing processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a holding device with light breakthrough is used to allow light passage for reading coding structures, then light transmission is enabled, but stray light interference increases reducing detection reliability
Solution Approach 1:
The holding device incorporates a selectively transparent material that exhibits different optical properties at different locations and wavelengths. The material is transparent to infrared light (wavelengths > 700 nm) allowing light passage for coding detection, while being opaque to visible light (wavelengths < 700 nm) to block stray light. This local differentiation of optical properties resolves the contradiction between enabling light transmission and preventing stray light interference.
Solution Approach 2:
The patent changes the optical parameters of the holding device material by selecting a substance with wavelength-dependent transparency characteristics. The material's transmission properties are specifically tailored to transmit infrared light while blocking visible light, thereby changing the parameter of light transmission selectivity to simultaneously achieve both light passage and stray light reduction.
2Measurement precision
If a selectively transparent material is used to block stray light, then detection sensitivity increases, but manufacturing complexity may increase
Solution Approach 1:
The patent achieves improved detection sensitivity by changing the optical parameters of the holding device material. The selectively transparent material's wavelength-dependent properties enable it to block visible stray light while transmitting infrared light, thereby enhancing measurement precision without requiring complex multi-component structures.
Solution Approach 2:
The holding device is manufactured as a single piece from a selectively transparent material that combines both transparent and opaque properties in different wavelength ranges. This use of a composite material with dual optical characteristics allows the device to simultaneously achieve stray light blocking and light transmission functions in a single manufacturing process, maintaining ease of manufacture.
3Ease of manufacture
If conventional opaque holding devices are used, then manufacturing is simple, but stray light passes through reducing readout reliability
Solution Approach 1:
The patent applies local quality by making the holding device material selectively transparent rather than uniformly opaque. The material's different optical properties at different wavelengths allow it to block visible stray light while transmitting infrared light, thereby improving readout reliability without compromising manufacturing simplicity.
Solution Approach 2:
The patent changes the optical parameters of the holding device from uniform opacity to wavelength-selective transparency. This parameter change enables the material to differentiate between visible and infrared light, blocking harmful stray light while allowing useful signal light to pass through, thus improving reliability while maintaining ease of manufacture through single-material construction.
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 increases the sensitivity and selectivity of the detection process by minimizing stray light interference, leading to a more reliable reading of coding structures on breathing tubes, thereby enhancing the accuracy of lung function diagnostics.
Implementation Method 1
a material that is transparent for light having a wavelength in a first wavelength range but nontransparent for light having a wavelength in a second wavelength range (selectively transparent material)
Data Source
AI summary
A holding device for a breathing tube for use in lung function diagnostics is disclosed. This holding device consists of a material that is transparent for light having a wavelength in a first wavelength range but nontransparent for light having a wavelength in a second wavelength range. In other aspects, a lung function diagnostics device comprising such a holding device and a method for reading out a coding on a surface of a breathing tube for use in lung function diagnostics are disclosed.