Imaging system and scanning method based on terahertz wave

An imaging system and terahertz technology, applied in the field of terahertz imaging, can solve the problems of single imaging method, large space occupation, and high production cost, and achieve the effects of shortening scanning time, reducing space occupation, and reducing production cost

Pending Publication Date: 2019-07-26
HUAZHONG UNIV OF SCI & TECH
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Problems solved by technology

[0005] Aiming at the defects of the prior art, the present invention provides an imaging system and scanning method based on terahertz waves, aiming to solve the problems of single imaging mode, high manufacturing cost and large space occupation in the existing system

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  • Imaging system and scanning method based on terahertz wave
  • Imaging system and scanning method based on terahertz wave
  • Imaging system and scanning method based on terahertz wave

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Embodiment Construction

[0038]In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.

[0039] Such as figure 1 The terahertz wave-based imaging system shown includes a terahertz wave emission module, two linear stepper motors, two rotary stepper motors, a sample stage, a U-shaped bracket, a terahertz wave detection module, and a data acquisition module.

[0040] The terahertz wave emitting module is used to emit terahertz waves, and the module includes a terahertz wave emitting so...

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Abstract

The invention discloses an imaging system and a scanning method based on a terahertz wave. The imaging system comprises a terahertz wave transmission module, a first linear stepper motor, a first rotating stepper motor, a sample stage, a second linear stepper motor, a second rotating stepper motor, a U-shaped bracket, a terahertz wave detection module, and a data collection module, the terahertz wave transmission module transmits the terahertz wave, the stepper motor is used for moving a sample and collect signals of the sample at the positions and angles, a light intensity signal is convertedinto a photocurrent signal and collected and saved in the data collection module, and finally, a transmitted image or a sinusoidal image of the sample is obtained. A scanning method of a two-dimensional terahertz transmission-type imaging system, a scanning method of a terahertz tomography imaging system based on two-dimensional Radon transform, and a scanning method of a terahertz tomography imaging system based on three-dimensional Radon transform are provided based on the imaging system, integrated design effectively lowers the production cost of the imaging system, and space occupation ofthe imaging system is reduced.

Description

technical field [0001] The invention belongs to the field of terahertz imaging, and more specifically relates to an imaging system and scanning method based on terahertz waves. Background technique [0002] Terahertz wave (Terahertz wave, THz wave for short) refers to an electromagnetic wave with a frequency between 0.1 and 10 THz, and its wavelength is in the range of 0.03 mm to 3 mm, which is between the infrared wave and the microwave band. Terahertz waves have many unique advantages such as transient, low energy, broadband and coherence. [0003] X-rays have a strong ability to penetrate various materials and substances, so they are widely used in many fields such as medical diagnosis, material analysis and industrial production. But non-dense materials, such as aerospace insulation foam, absorb x-rays very poorly, making it difficult to identify defects in these materials using x-ray imaging techniques. Compared with X-rays, terahertz waves can penetrate non-metallic ...

Claims

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Application Information

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IPC IPC(8): G01N21/59G01N21/3581G01N21/01
CPCG01N21/59G01N21/3581G01N21/01G01N2021/0112
Inventor 牛丽婷刘劲松许润生王可嘉杨振刚
Owner HUAZHONG UNIV OF SCI & TECH
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