Visible Light Absorption Element for Temperature Visualization
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Solution Overview
Problem
Thermographic cameras face challenges due to low photon energy of infrared rays, leading to noise sensitivity and a limited number of pixels, and temperature measurement devices often have complex configurations that hinder miniaturization.
Innovation Solution
A visible light absorption element with a resonance frequency in the visible light range that changes with temperature, allowing it to absorb or reflect visible light based on heat, comprising an LC circuit with thermally deformable inductor and capacitor portions, enabling miniaturization and simplified temperature detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If infrared detecting elements are used to measure temperature without contact, then temperature visualization is achieved, but the element size must be large to ensure sufficient signal intensity, limiting the number of pixels
Solution Approach 1:
The patent replaces infrared detection (electromagnetic radiation detection) with visible light detection. The temperature measurement function is transferred from infrared detecting elements to visible light absorbing elements, which have higher photon energy and can be miniaturized. This substitution enables high-resolution temperature imaging with smaller pixel sizes.
Solution Approach 2:
The patent changes the detection wavelength parameter from infrared to visible light range. By using visible light absorbing elements with resonance frequencies in the visible light region, the system achieves higher photon energy detection, improving signal-to-noise ratio and enabling smaller element sizes while maintaining measurement precision.
2Manufacturing precision
If the number of pixels in thermographic camera is increased, then temperature distribution resolution is improved, but element size must be reduced which conflicts with the requirement for sufficient light-receiving area
Solution Approach 1:
The patent substitutes infrared detecting elements with visible light absorbing elements. This replacement allows for smaller element sizes because visible light has higher photon energy, providing sufficient signal intensity even with reduced light-receiving area. Consequently, high-density pixel arrays can be implemented without compromising measurement quality.
3Measurement precision
If temperature measurement devices use complex configurations (wiring, signal amplifiers, etc.), then measurement functionality is achieved, but device size increases and miniaturization becomes difficult
Solution Approach 1:
The visible light absorbing element serves dual functions: it acts as both the temperature sensing element and the signal generation element. When illuminated by visible light, the element's resonance frequency changes with temperature, directly modulating the reflected or transmitted light. This self-service mechanism eliminates the need for separate wiring, signal amplifiers, and processing circuits, enabling miniaturization.
Solution Approach 2:
The patent utilizes changes in the optical properties (color/frequency) of the visible light absorbing element in response to temperature changes. The element's resonance frequency shifts with temperature, causing it to absorb or reflect different frequencies of visible light. This optical signaling method replaces complex electrical wiring and signal processing with simple optical detection.
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 allows for a high-density array of small visible light absorption elements that convert temperature into visible light frequency changes, enabling precise temperature visualization without complex wiring, and facilitating the detection of temperature distributions with high sensitivity.
Implementation Method 1
the visible light absorption element possesses a resonance frequency included in a visible light frequency region, and resonates and absorbs visible light when the visible light of the resonance frequency enters on the element
Implementation Method 2
the visible light absorption element thermally deforms due to temperature change to thereby change the resonance frequency
Data Source
AI summary
In accordance with heat received from a target object, a visible light absorption element 10 changes a frequency component of visible light to reflect or transmit. The visible light absorption element 10 possesses a resonance frequency included in a visible light frequency region. The visible light absorption element 10 absorbs visible light of the resonance frequency. The visible light absorption element 10 thermally deforms due to temperature change to thereby change the resonance frequency, and absorbs visible light of the changed resonance frequency.