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Multi-spectral imaging food detection device based on visible light wave band narrow-band absorber

A multi-spectral imaging and food detection technology, applied in measuring devices, color/spectral characteristic measurement, material analysis by optical means, etc.

Pending Publication Date: 2022-05-31
长治学院
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  • Description
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Problems solved by technology

This is also the main reason why there are few studies on multi-band absorbers in the visible light band.

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  • Multi-spectral imaging food detection device based on visible light wave band narrow-band absorber
  • Multi-spectral imaging food detection device based on visible light wave band narrow-band absorber
  • Multi-spectral imaging food detection device based on visible light wave band narrow-band absorber

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Embodiment Construction

[0017] In order to make the objects, features and advantages of the present invention more clearly understood, the specific embodiments of the present invention will be described in detail below.

[0018] like figure 1 As shown, the multispectral imaging food detection device based on the visible light band narrow-band absorber includes a laser-driven broadband light source, a half mirror, a detection platform, a polarizer, a plane mirror, a multispectral imaging sensor and an image processing system.

[0019] The laser-driven broadband light source emits continuous light in the range of 300nm to 1200nm, and the plant food placed on the detection platform is irradiated by the semi-reflecting and semi-mirror. Polarized light, and finally the polarized light of TM polarization is reflected by the plane mirror and enters the multi-spectral imaging sensor. The pixel of the multi-spectral imaging sensor is a multi-spectral narrow-band absorber. The image transmitted to the image pr...

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Abstract

A multispectral imaging food detection device based on a visible light band narrow-band absorber belongs to the field of spectral imaging food detection, and designs a multispectral imaging system based on the visible light band narrow-band absorber, and the designed absorbers are arranged into a two-dimensional array as an imaging unit of a detector to directly form a visual image. The microstructure of the absorber adopts a sandwich structure waveguide formed by metal-dielectric-metal, and the top and bottom metal layers of the absorber can be directly used as electrodes to be integrated in an electro-optical system, so that a multispectral imaging system is miniaturized; the absorption peak value of the narrow-band absorber designed in the invention is continuously adjustable, so that the narrow-band absorber can be applied to multispectral imaging of different fruits, vegetables and rhizome foods.

Description

technical field [0001] The invention belongs to the field of spectral imaging food detection, in particular to a multispectral imaging food detection device based on a visible light band narrow-band absorber. Background technique [0002] Food safety issues are related to human health and life safety, and have long been the focus of research by researchers. Multispectral imaging technology, which can capture image data in a discontinuous spectral range, has now been recognized as an advanced means to meet the safety inspection needs of the food industry, and has been widely used in recent years to predict and visualize various quality parameters of plant-based foods. . [0003] Plant-based foods play a central role in meeting the growing global demand for agricultural products. As an extremely important part of a healthy diet, plant-based foods not only provide a lot of energy and nutrients, but also reduce the risk to humans of many diseases such as insulin resistance, di...

Claims

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Application Information

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IPC IPC(8): G01N21/31G01N21/25
CPCG01N21/31G01N21/255
Inventor 黄振芬王贵平赵波黄长明
Owner 长治学院
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