CN105259590A - Two-dimensional scanning device applied to THz wave remote imaging - Google Patents
Two-dimensional scanning device applied to THz wave remote imaging Download PDFInfo
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- CN105259590A CN105259590A CN201510678380.9A CN201510678380A CN105259590A CN 105259590 A CN105259590 A CN 105259590A CN 201510678380 A CN201510678380 A CN 201510678380A CN 105259590 A CN105259590 A CN 105259590A
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Abstract
The invention discloses a two-dimensional scanning device applied to THz wave remote imaging, comprising a planar mirror used for receiving or emitting THz wave; a first scanning motor connected to the planar mirror, and controlling the planar mirror to rotate; a second scanning motor connected to the planar mirror, and controlling the planar mirror to pitch; and a control module respectively connected to the first scanning motor and the second scanning motor, and controlling two motors to realize compound motion of the planar mirror, so as to realize THz wave remote two-dimensional scanning. According to the invention, a THz wave transmit-receive system realizes imaging through a planar mirror, and realizes THz wave remote imaging through the rotating and pitching two-dimensional motion of the planar mirror, and greatly broadens the application scope of THz wave imaging.
Description
Technical field
The present invention relates to optical devices exploration or field of detecting, be specifically related to a kind of two-dimensional scanner being applied to the imaging of THz wave long distance.
Background technology
Terahertz (THz) refers to frequency at 0.1THz ~ 10THz(wavelength in 3mm ~ 30 μm) between electromagnetic wave.THz wave between microwave and infrared between, to materials such as plastics, the scraps of paper, textile and leathers, there is good penetrability, become image resolution ratio high.
At present, by the restriction of material and processing technology, terahertz detector involves great expense, in terahertz imaging, also cannot adopt focal plane imaging, mostly adopts transmission or catoptric imaging.
" a kind of two-dimentional Terahertz transillumination imaging system and the formation method thereof " of application number 201210108140.1 describes a kind of two-dimentional Terahertz transillumination imaging system, its imaging device is fixed, the object to be imaged is positioned between terahertz imaging lens and Terahertz condenser lens, terahertz wave beam group is irradiated on imaging object after terahertz imaging lens, then the terahertz wave beam group through imaging object converges in terahertz wave detector by Terahertz condenser lens, obtains two-dimentional Terahertz image; " terahertz imaging device and the terahertz imaging method " of application number 200910135979.2 describes a kind of terahertz imaging device, and device itself is fixed, and the amplitude-splittine interference means of employing transmitting, receiving trap are to imaging of samples; " a kind of ground Terahertz radar system for surveying cloud " of application number 201510040930.4 describes a kind of Terahertz reflection imaging system for surveying cloud, device can realize 90 ° of manual overturnings of level and vertical both direction, realize surveying cloud function to reflection from lens by terahertz sources, receiver module, these existing terahertz imaging device above-mentioned unpowered device in use, system all needs to maintain static.
" a kind of THz wave imaging system " of application number 201210117305.1 describes a kind of THz wave and launches imaging system, mainly comprise level crossing and polygonal mirror tilting mirror, THz wave reflexes to level crossing through polygonal-mirror, again by flat mirror reflects to target, level crossing and polygonal-mirror respectively have independently propulsion system, the low-angle periodic reverse being respectively used to realize level crossing and polygonal-mirror swings, and then realize Terahertz two-dimensional imaging, this system dynamic device is separated, the hunting range of sweeping level crossing due to frame is less, be mainly used in the imaging of low coverage fixed target, can be applicable to carry out scanning imagery to human body in real-time safe examination system.
Summary of the invention
The object of the present invention is to provide a kind of two-dimensional scanner being applied to the imaging of THz wave long distance, its Terahertz receives, emission coefficient is embodied as picture by level crossing transmitting, level crossing is locked on combined two-dimension scanister, realized the long distance imaging of THz wave by the rotation of device, pitching two dimensional motion, greatly expand the range of application of terahertz imaging.
In order to achieve the above object, the present invention is achieved through the following technical solutions:
Be applied to a two-dimensional scanner for THz wave long distance imaging, it is characterized in that, comprise:
Plane mirror, for receiving or launching THz wave;
First scan module, its connect described in plane mirror, control plane catoptron carries out spinning movement;
Second scan module, its connect described in plane mirror, control plane catoptron carries out pitching motion;
Control module, it connects the first described scan module and the second scan module respectively, making plane mirror carry out compound motion, realizing the long distance two-dimensional scan of THz wave by controlling two motors.
The above-mentioned two-dimensional scanner being applied to the imaging of THz wave long distance, wherein:
The first described scan module is fixed on the top of an inverted U main body rack, and described main body rack has the side arm being respectively equipped with through hole for a pair, and the through hole on one of them side arm is as tache motorice exit orifice, and the through hole on another sidewall is as stiff end exit orifice; Be respectively equipped with for runner assembly that is fixing and that make described plane mirror rotate in described stiff end exit orifice and tache motorice exit orifice; The first described scan module comes and goes rotation ± α angle by the vertical axes of main body rack control plane catoptron around the first scan module place;
The second described scan module correspondence connects the runner assembly being positioned at described tache motorice exit orifice, and the second described scan module comes and goes rotation ± β angle by the transverse axis of runner assembly control plane catoptron around a pair described runner assembly place.
The above-mentioned two-dimensional scanner being applied to the imaging of THz wave long distance, wherein, be respectively equipped with bearings face in each described through hole, and each described runner assembly comprises respectively:
Bearing, it is located in corresponding through hole and its end face props up the bearings face being positioned at this through hole, and this bearing comprises an outer ring and inner ring;
The outer liner of bearing, its correspondence is located between the outside wall surface of outer ring on described bearing and the internal face of described through hole;
Turning axle, its one end is provided with correspondence and is arranged on the shaft shoulder in described bearing inner race, the plane mirror described in its other end correspondence connects;
Bearing inner liner, it is located between the shaft shoulder of described turning axle and the internal face of corresponding bearing inner race;
Bearing outer press cover, for the bearing outer ring of side corresponding to outer side compression.
The above-mentioned two-dimensional scanner being applied to the imaging of THz wave long distance, wherein:
Compressed the outer ring being positioned at the bearing of described tache motorice exit orifice by a Coupling Shaft, and by housing screw, this Coupling Shaft is connected with corresponding turning axle;
The second described scan module comprises an inner shaft of motor, and the wall of this inner shaft of motor is provided with tapped through hole, is provided with jackscrew in tapped through hole, and the inner shaft of motor of this second scan module is by jackscrew and described Coupling Shaft assembly connection.
The above-mentioned two-dimensional scanner being applied to the imaging of THz wave long distance, wherein:
Compressed the outer ring being positioned at the bearing of described stiff end exit orifice by a bearing internal gland, and by housing screw, this bearing internal gland is connected with corresponding turning axle.
The above-mentioned two-dimensional scanner being applied to the imaging of THz wave long distance, wherein:
The first described scan module is connected by lock-screw with main body rack;
The second described scan module is connected by lock-screw with main body rack.
The above-mentioned two-dimensional scanner being applied to the imaging of THz wave long distance, wherein:
Described plane mirror, main body rack, bearing outer press cover, Coupling Shaft, turning axle are aluminum alloy material.
The present invention compared with prior art has the following advantages: Terahertz receive-transmit system is embodied as picture by level crossing, and the rotation of coupling apparatus, pitching two dimensional motion realize the long distance imaging of THz wave, have greatly expanded the range of application of terahertz imaging.
Accompanying drawing explanation
Fig. 1 is one-piece construction schematic diagram of the present invention;
Fig. 2 is explosive view of the present invention;
Fig. 3 is the stereographic map of main body rack of the present invention;
Fig. 4 is the stereographic map of the first scan module of the present invention;
Fig. 5 is the stereographic map of the second scan module of the present invention;
Fig. 6 is the stereographic map of plane mirror of the present invention.
Embodiment
Below in conjunction with accompanying drawing, by describing a preferably specific embodiment in detail, the present invention is further elaborated.
As shown in Figure 1, 2; Be applied to a two-dimensional scanner for THz wave long distance imaging, it comprises: plane mirror 4, for receiving or launching THz wave; First scan module 1, its connect described in plane mirror 4, control plane catoptron 4 carries out spinning movement; Second scan module 2, its connect described in plane mirror 4, control plane catoptron 4 carries out pitching motion; Control module, it connects the first described scan module 1 and the second scan module 2 respectively, making plane mirror 4 carry out compound motion, realizing the long distance two-dimensional scan of THz wave by controlling two motors.
The first described scan module 1 is fixed on the top of an inverted U main body rack 3, the main body rack of inverted U design plays distortion-free effect, described main body rack 3 has the side arm being respectively equipped with through hole 31 for a pair, through hole 31 on one of them side arm is as tache motorice exit orifice, and the through hole 31 on another sidewall is as stiff end exit orifice; Be respectively equipped with for runner assembly that is fixing and that make described plane mirror 4 rotate in described stiff end exit orifice and tache motorice exit orifice; The first described scan module 1 comes and goes rotation ± α angle by the vertical axes of main body rack 3 control plane catoptron 4 around the first scan module 1 place; The second described scan module 2 correspondence connects the runner assembly being positioned at described tache motorice exit orifice, and the second described scan module 2 comes and goes rotation ± β angle by the transverse axis of runner assembly control plane catoptron 4 around a pair described runner assembly place.
Bearings face 311 is respectively equipped with in each described through hole 31, and each described runner assembly comprises respectively: bearing 52, it is located in corresponding through hole 31 and its end face props up the bearings face 311 being positioned at this through hole, and this bearing 52 comprises an outer ring and inner ring; The outer liner 53 of bearing, between the outside wall surface that its correspondence is located at outer ring on described bearing 52 and the internal face of described through hole, the outer liner 53 of bearing can carry out the adjustment of assembling number according to assembling situation; Turning axle 51, its one end is provided with correspondence and is arranged on the shaft shoulder 511 in described bearing 52 inner ring, and the shaft shoulder 511 end is provided with tapped blind hole 512, plane mirror 4 described in its other end correspondence connects, the other end of bearing 52 is provided with turning axle through hole 513, and described turning axle through hole 513 is connected by lock-screw 9 with the tapped blind hole 41 on plane mirror 4; Bearing inner liner 55, it is located between the shaft shoulder 511 of described turning axle 51 and the internal face of corresponding bearing 52 inner ring; Bearing outer press cover 54, for bearing 52 outer ring of side corresponding to outer side compression, in the present embodiment, described bearing outer press cover 54 is locked to by housing screw 6 in the tapped blind hole 312 on corresponding sidewall to fix.
As shown in Fig. 3 ~ 6, compressed the outer ring being positioned at the bearing 52 of described tache motorice exit orifice by a Coupling Shaft 8, and by housing screw 6, this Coupling Shaft 8 is connected with corresponding turning axle 51; The second described scan module 2 comprises an inner shaft of motor 21, the wall of this inner shaft of motor 21 is provided with tapped through hole 211, jackscrew 22 is provided with in tapped through hole 211, the inner shaft of motor 21 of this second scan module 2 is by jackscrew 22 and described Coupling Shaft 8 assembly connection, during installation, regulate turning axle 51 to drive Coupling Shaft 8 to make Coupling Shaft locking face 81 vertical with the tapped through hole 211 on axle 21 in the second scan module 2, Coupling Shaft 51 holds out against in the second surface sweeping inner shaft of motor 21 through tapped through hole 211 by jackscrew 22.
Compressed the outer ring being positioned at the bearing 52 of described stiff end exit orifice by a bearing internal gland 7, and by housing screw 6, the tapped blind hole 512 of this bearing internal gland 7 with corresponding turning axle 51 is connected.
In the first described scan module 1, axial end tapped blind hole 11 is connected by lock-screw 9 with the countersunk head through hole 32 above main body rack 3; The second described scan module 2 is connected with the tapped blind hole 313 on main body rack 3 tache motorice by lock-screw 9.
In the present embodiment, described plane mirror 4, main body rack 3, bearing outer press cover 54, Coupling Shaft 8, turning axle 51 are 2A12 aluminum alloy material, play and facilitate main body rack 3 to do scanning motion; Described bearing 52 adopts the stainless steel zanjon ball bearing of model SB6205ZZ; The outer liner 53 of bearing adopts the thick latten(-tin) of 0.1mm; Housing screw 6 is M3 × 12 socket head cap screw band spring washer and plain washer; Lock-screw 9 is M6 × 20 socket head cap screw band spring washer and plain washer.
Although content of the present invention has done detailed introduction by above-mentioned preferred enforcement, will be appreciated that above-mentioned description should not be considered to limitation of the present invention.After those skilled in the art have read foregoing, for multiple amendment of the present invention and substitute will be all apparent.Therefore, protection scope of the present invention should be limited to the appended claims.
Claims (7)
1. be applied to a two-dimensional scanner for THz wave long distance imaging, it is characterized in that, comprise:
Plane mirror (4), for receiving or launching THz wave;
First scan module (1), its connect described in plane mirror (4), control plane catoptron (4) carries out spinning movement;
Second scan module (2), its connect described in plane mirror (4), control plane catoptron (4) carries out pitching motion;
Control module, it connects described the first scan module (1) and the second scan module (2) respectively, making plane mirror (4) carry out compound motion, realizing the long distance two-dimensional scan of THz wave by controlling two motors.
2. be applied to the two-dimensional scanner of THz wave long distance imaging as claimed in claim 1, it is characterized in that:
Described the first scan module (1) is fixed on the top of an inverted U main body rack (3), described main body rack (3) has the side arm being respectively equipped with through hole (31) for a pair, through hole (31) on one of them side arm is as tache motorice exit orifice, and the through hole (31) on another sidewall is as stiff end exit orifice; Be respectively equipped with for runner assembly that is fixing and that make described plane mirror (4) rotate in described stiff end exit orifice and tache motorice exit orifice; Described the first scan module (1) comes and goes rotation ± α angle by the vertical axes of main body rack (3) control plane catoptron (4) around the first scan module (1) place;
Described the second scan module (2) correspondence connects the runner assembly being positioned at described tache motorice exit orifice, and described the second scan module (2) comes and goes rotation ± β angle by the transverse axis of runner assembly control plane catoptron (4) around a pair described runner assembly place.
3. is applied to the two-dimensional scanner of THz wave long distance imaging as claimed in claim 2, it is characterized in that, in each described through hole (31), be respectively equipped with bearings face (311), and each described runner assembly comprises respectively:
Bearing (52), it is located in corresponding through hole (31) and its end face props up the bearings face (311) being positioned at this through hole, and this bearing (52) comprises an outer ring and inner ring;
The outer liner (53) of bearing, between the outside wall surface that its correspondence is located at the upper outer ring of described bearing (52) and the internal face of described through hole;
Turning axle (51), its one end is provided with correspondence and is arranged on the shaft shoulder (511) in described bearing (52) inner ring, the plane mirror (4) described in its other end correspondence connects;
Bearing inner liner (55), between its shaft shoulder (511) being located at described turning axle (51) and the internal face of corresponding bearing (52) inner ring;
Bearing outer press cover (54), for bearing (52) outer ring of side corresponding to outer side compression.
4. be applied to the two-dimensional scanner of THz wave long distance imaging as claimed in claim 3, it is characterized in that:
Be positioned at the outer ring of the bearing (52) of described tache motorice exit orifice by a Coupling Shaft (8) compression, and by housing screw (6), this Coupling Shaft (8) be connected with corresponding turning axle (51);
Described the second scan module (2) comprises an inner shaft of motor (21), the wall of this inner shaft of motor (21) is provided with tapped through hole (211), be provided with jackscrew (22) in tapped through hole (211), the inner shaft of motor (21) of this second scan module (2) is by jackscrew (22) and described Coupling Shaft (8) assembly connection.
5. be applied to the two-dimensional scanner of THz wave long distance imaging as claimed in claim 4, it is characterized in that:
Be positioned at the outer ring of the bearing (52) of described stiff end exit orifice by a bearing internal gland (7) compression, and by housing screw (6), this bearing internal gland (7) be connected with corresponding turning axle (51).
6. be applied to the two-dimensional scanner of THz wave long distance imaging as claimed in claim 2, it is characterized in that:
Described the first scan module (1) is connected by lock-screw (9) with main body rack (3);
Described the second scan module (2) is connected by lock-screw (9) with main body rack (3).
7. be applied to the two-dimensional scanner of THz wave long distance imaging as claimed in claim 5, it is characterized in that:
Described plane mirror (4), main body rack (3), bearing outer press cover (54), Coupling Shaft (8), turning axle (51) are aluminum alloy material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510678380.9A CN105259590A (en) | 2015-10-20 | 2015-10-20 | Two-dimensional scanning device applied to THz wave remote imaging |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510678380.9A CN105259590A (en) | 2015-10-20 | 2015-10-20 | Two-dimensional scanning device applied to THz wave remote imaging |
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| CN201510678380.9A Pending CN105259590A (en) | 2015-10-20 | 2015-10-20 | Two-dimensional scanning device applied to THz wave remote imaging |
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| CN106324594A (en) * | 2016-07-28 | 2017-01-11 | 上海无线电设备研究所 | Terahertz rapid two-dimensional scanning system and method |
| CN107315248A (en) * | 2017-06-29 | 2017-11-03 | 中国科学院上海技术物理研究所 | Two waveband reflects two-dimensional scan search and track platform |
| CN108562948A (en) * | 2018-06-08 | 2018-09-21 | 西安天和防务技术股份有限公司 | A kind of Terahertz scanning imaging system based on passive type |
| CN109407168A (en) * | 2018-12-29 | 2019-03-01 | 清华大学 | Millimeter wave/THz wave imaging device and its reflecting plate regulating device |
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| US20070034790A1 (en) * | 2005-08-11 | 2007-02-15 | Samsung Electronics Co., Ltd. | Mirror positioning unit of laser scanning unit and laser scanning unit employing the same |
| CN101738619A (en) * | 2009-11-27 | 2010-06-16 | 华中科技大学 | Two-waveband infrared optical system |
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| CN106324594A (en) * | 2016-07-28 | 2017-01-11 | 上海无线电设备研究所 | Terahertz rapid two-dimensional scanning system and method |
| CN107315248A (en) * | 2017-06-29 | 2017-11-03 | 中国科学院上海技术物理研究所 | Two waveband reflects two-dimensional scan search and track platform |
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| CN109407168B (en) * | 2018-12-29 | 2024-04-09 | 清华大学 | Millimeter wave/terahertz wave imaging device and reflecting plate adjusting device thereof |
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