Compact Infrared Gas Sensor with Integrated Deflection Optics
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Solution Overview
Problem
Conventional gas sensors using infrared absorption characteristics are bulky, making them unsuitable for mobile devices or mobile communication devices, where a compact and reliable gas detection solution is needed.
Innovation Solution
A compact detection arrangement with a mounting surface for external electrical connection, an emitter generating radiation in the infrared range, a detector with adapted spectral sensitivity, and a form body that encloses the emitter and detector, along with deflection optics to form an optical path, allowing for efficient gas detection without a separate housing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional infrared gas sensors are used, then reliable gas detection is achieved, but the device size becomes large and bulky
Solution Approach 1:
The patent merges the emitter, detector, deflection optics, and housing into a single integrated detection arrangement where the form body serves both as structural housing and as the deflection optic element. This consolidation eliminates the need for separate components and reduces overall device volume while maintaining detection functionality.
Solution Approach 2:
The detection arrangement employs a nested structure where the emitter and detector are positioned within the form body, and the deflection optic is integrated into the form body itself. This nesting approach allows multiple functional elements to occupy overlapping or adjacent spatial volumes, achieving compact packaging.
2Volume of moving object
If the detection arrangement is made compact, then suitability for mobile devices is improved, but external electrical connection becomes more difficult
Solution Approach 1:
The patent positions all external contact surfaces on the mounting surface, which is oriented perpendicular to the optical axis direction. This dimensional arrangement allows electrical connections to be made from the side rather than from the optical path direction, facilitating compact packaging while maintaining ease of electrical connection.
3Stability of the object's composition
If a separate housing is used to enclose emitter and detector, then structural stability is improved, but device complexity and size increase
Solution Approach 1:
The form body is designed to simultaneously serve as the structural housing and as the deflection optic component. By combining these two functions into a single element, the patent reduces the number of separate components while maintaining both structural stability and optical functionality.
Solution Approach 2:
The form body performs multiple functions: it provides structural housing, acts as a deflection optic for directing radiation, and serves as a mounting platform for the emitter and detector. This multi-functionality reduces overall device complexity while maintaining structural integrity.
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 enables reliable gas detection with a compact design, facilitating easy external electrical connection and efficient interaction between radiation and the gas, suitable for use in mobile devices without the need for additional housing.
Implementation Method 1
an emitter (2) for generating radiation (90) having a peak wavelength in the infrared spectral range
Implementation Method 2
Gas sensors using the absorption characteristic of the respective gas in the infrared spectral range
Implementation Method 3
a change in direction of the impinging radiation is effected by reflection, for example, directed reflection, diffuse reflection or total reflection, and/or by refraction
Implementation Method 4
a change in direction of the impinging radiation is effected by reflection, for example, directed reflection, diffuse reflection or total reflection, and/or by refraction
Data Source
AI summary
A detection assembly and a method for producing a detection assemblies are disclosed. In an embodiment a detection arrangement includes an emitter configured to generate radiation having a peak wavelength in an infrared spectral range, a detector configured to receive the radiation, a mounting surface comprising at least a first contact surface and a second contact surface for external electrical connection of the detection arrangement, a form body adjoining the emitter and the detector at least in places and deflection optics, on which the radiation impinges during operation of the detection arrangement so that an optical path is formed between the emitter and the detector by the deflection optics, wherein the deflection optics include a scattering body into which the radiation enters during the operation through a surface of the scattering body facing the emitter.