High-resolution terahertz wave scanning imaging device
A scanning imaging, high-resolution technology, applied in the field of terahertz wave applications, can solve the problem of low spatial resolution of imaging, and achieve the effects of high spatial resolution, fast scanning and imaging speed, and weight reduction
Inactive Publication Date: 2014-02-12
HUBEI JIUZHIYANG INFRARED SYST CO LTD
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Problems solved by technology
Compared with mechanical scanning, optical scanning can greatly increase the scanning speed, but because the numerical aperture of the terahertz convergent beam is usually small during the scanning process, the imaging spatial resolution is low
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[0016] 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.
[0017] Such as figure 1 as shown, figure 1 It is a structural block diagram of the first embodiment of the present invention. The device in this embodiment includes a terahertz wave transceiver 1, a parabolic reflector 2, a plane reflector 3, a parabolic reflector 4, an electronically controlled displacement guide rail 5, an electronically controlled displacement guide rail 6, and an object to be measured 7, as well as a data acquisition card and a computer . Among them, the terahertz wave transceiver 1 emits terahertz waves to generate an imaging carrier for the system; the parabolic mirror 2 i...
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The invention discloses a high-resolution terahertz wave scanning imaging device. The high-resolution terahertz wave scanning imaging device comprises a terahertz wave transceiver, a first parabolic reflecting mirror, a planar reflecting mirror, a second parabolic reflecting mirror, a first electric control displacement guide rail, a second electric control displacement guide rail, a data acquisition card and a computer, wherein the terahertz wave transceiver is used for emitting terahertz waves and converting the received terahertz waves into voltage signals; the first parabolic reflecting mirror is used for aligning terahertz waves; the planar reflecting mirror is used for turning back a terahertz wave light path to the second parabolic reflecting mirror; the second parabolic reflecting mirror is used for reflecting and gathering terahertz waves to a target surface, and returning the terahertz waves to be reflected; the data acquisition card is used for carrying out A / D (Analog to Digital) conversion onto the voltage signals output by the terahertz wave transceiver and sending the voltage signals to the computer; and the computer is used for outputting target two-dimensional terahertz wave images. The device disclosed by the invention can give consideration to resolution and imaging speed at the same time.
Description
technical field [0001] The invention relates to the application field of terahertz waves, in particular to a terahertz wave scanning imaging device. Background technique [0002] Terahertz (THz) waves generally refer to electromagnetic waves with a frequency between 0.1 THz and 10 THz (wavelength between 3 mm and 30 μm), and are located between microwave and infrared radiation in the electromagnetic spectrum. THz waves can penetrate many dielectric materials and non-polar materials, such as clothing, plastic and paper, and can perform perspective imaging on objects that are opaque to visible light. In addition, terahertz waves have shorter wavelengths than millimeter-wave imaging techniques, so they can provide higher spatial resolution. Based on the above characteristics, terahertz wave imaging technology has important application value in the fields of safety inspection, non-destructive flaw detection, and quality control. [0003] At present, it is difficult and expensi...
Claims
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IPC IPC(8): G01N21/47G02B26/10
Inventor 袁英豪郭良贤孙峰邓代竹李渊梁娟张青张保
Owner HUBEI JIUZHIYANG INFRARED SYST CO LTD