Hand-hold near-field imaging device and scan imaging method thereof

A near-field imaging and guiding device technology, applied in the field of radiation imaging, can solve the problems of complex scanning mechanism, high weight and cost, large lens, etc., and achieve the effect of low cost, simple structure and convenient use

Active Publication Date: 2010-12-01
TSINGHUA UNIV +1
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Problems solved by technology

This method is not suitable for handheld devices due to the large lens, complex s

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  • Hand-hold near-field imaging device and scan imaging method thereof
  • Hand-hold near-field imaging device and scan imaging method thereof
  • Hand-hold near-field imaging device and scan imaging method thereof

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Embodiment Construction

[0017] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the invention. Here, description and illustration of well-known structures are omitted so as not to unnecessarily obscure the concept of the present invention.

[0018] figure 1 A schematic structural diagram of a handheld near-field imaging device according to an embodiment of the present invention is shown. like figure 1 As shown, the handheld near-field imaging device according to this embodiment includes a radiometer 1 for measuring the amount of radiation incident thereon. In the case of millimeter wave radiation (frequency range 30GHz-500GHz), the radiometer 1 is sensitive to millimeter wave radiation. For accurate measurements, the radiometer 1 may be a narrow beam radiometer, for example.

[0019] The handh...

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Abstract

The invention provides a hand-hold near-field imaging device and a scan imaging method thereof. The hand-hold near-field imaging device in the invention comprises a radiometer, a rotatable radiation guide device and a rotation drive device, wherein the radiometer is used for metering incident radiant quantity thereon; the rotatable radiation guide device is used for guiding radiations emitted by each point of a target object in a specific direction to the radiometer one by one; the rotation drive device is used for driving the radiation guide device to rotate; and the one-dimensional image ofthe target object in the specific direction can be obtained according to the radiant quantity metered by the radiometer.

Description

technical field [0001] The present invention relates to the field of radiation imaging, in particular to a handheld near-field imaging device and a scanning imaging method thereof, in particular, a millimeter-wave passive imaging device and scanning imaging method for human body security inspection. Background technique [0002] Radiation imaging, such as millimeter wave imaging, can be widely used in industrial inspection, human security inspection and other fields. Usually, in radiation (for example, millimeter wave) imaging, energy detection and reconstruction are realized by converging the radiant energy of the target object at the focal plane on one side of the lens to the radiometer array set on the focal plane on the other side of the lens through the lens imaging. This is typically applied for mid to long range imaging. This method is not suitable for handheld devices due to the large lens, complex scanning mechanism, and large number of radiometers, resulting in t...

Claims

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Application Information

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IPC IPC(8): G01J5/00G01J5/02
Inventor 陈志强李元景林东赵自然刘以农吴万龙张丽沈宗俊
Owner TSINGHUA UNIV
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