CN101900606B - Hand-hold near-field imaging device and scan imaging method thereof - Google Patents
Hand-hold near-field imaging device and scan imaging method thereof Download PDFInfo
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- CN101900606B CN101900606B CN 200910085552 CN200910085552A CN101900606B CN 101900606 B CN101900606 B CN 101900606B CN 200910085552 CN200910085552 CN 200910085552 CN 200910085552 A CN200910085552 A CN 200910085552A CN 101900606 B CN101900606 B CN 101900606B
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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
The present invention relates to the radiant image field, particularly, relate to a kind of hand-hold near-field imaging device and scan imaging method thereof, particularly, millimeter wave imaging and passive imaging device and scan imaging method that human body safety check is used.
Background technology
Radiant image, for example mm-wave imaging can be widely used in the fields such as industrial detection, human body safety check.Usually, in radiation (for example, millimeter wave) imaging, by the target object radiation energy at place, lens one side focal plane is converged on the radiometer array that arranges on the lens opposite side focal plane through lens, realize energy detection and reestablishment imaging.This is applied to the medium and long distance imaging usually.This method causes weight and cost too high, thereby is not suitable for handheld device owing to needing larger lens, complicated scanning mechanism, the radiometer of One's name is legion.
Therefore, need a kind of lightweight, cost is low and be suitable for hand-held near-field scan imaging device and the method for using.
Summary of the invention
In view of the above problems, the object of the present invention is to provide a kind of hand-hold near-field imaging device and method thereof, thus can be with the scanning imagery of simple structure realization to target object.
According to an aspect of the present invention, provide a kind of hand-hold near-field imaging device, having comprised: radiometer is used for measuring the radiant quantity that incides on it; Rotatable radiation guiding device is used for the target object radiation that each point sends on specific direction is directed to radiometer one by one; And rotating driving device, be used for driving the rotation of radiation guiding device, wherein, according to the radiant quantity that radiometer records, obtain target object along the one dimension image of described specific direction.
Preferably, radiometer can be the narrow beam radiometer.
Preferably, the radiation guiding device can be catoptron.Further preferably, the axis of radiometer can pass the turning axle of catoptron and the intersection point of catoptron.
Preferably, radiation is millimeter wave, and catoptron is the non-metal board that there is the coat of metal on sheet metal or surface.
Preferably, the angle of catoptron and turning axle is between 30 degree are spent to 60.
Preferably, rotating driving device comprises: support is used for the fixing radiation guiding device of supporting; Drive motor links to each other with support, drives the rotation of radiation guiding device thereby be used for driving support; And the transient equilibrium body, be arranged on the support torsional moment when rotating in order to the equilibrium radiation guiding device.
According to a further aspect in the invention, provide the above-mentioned hand-hold near-field imaging device of a kind of usefulness to come target object is carried out the method for scanning imagery, having comprised: utilized rotating driving device, drive the rotation of radiation guiding device; Utilize radiometer, the radiation guiding device is measured from the radiation that target object is directed on it; And according to the measurement result of radiometer, obtain the one dimension image of target object on specific direction.
Preferably, the method can also comprise: along the other direction ambulatory handheld Near-Field Radar Imaging device vertical with described specific direction, thereby realization is to the two-dimensional scan imaging of target object.
According to hand-hold near-field imaging device of the present invention and method, can realize the transversal scanning of target object near field, cooperate to hand to vertically move the two-dimensional scan that can realize very easily target object, simple in structure, with low cost, easy to use.
Description of drawings
Below, the preferred embodiments of the present invention are described with reference to the drawings, wherein:
Fig. 1 shows the structural representation according to the hand-hold near-field imaging device of the embodiment of the invention; And
Fig. 2 shows the schematic diagram that target object is carried out one-dimensional scanning.
Embodiment
Below, describe with reference to the accompanying drawings the preferred embodiments of the present invention in detail.Should be appreciated that these embodiment only are used for the purpose of explanation, rather than will limit the scope of the invention.At this, description and the explanation of known configurations have been omitted, in order to avoid unnecessarily obscure concept of the present invention.
Fig. 1 shows the structural representation according to the hand-hold near-field imaging device of the embodiment of the invention.As shown in Figure 1, comprise radiometer 1 according to the hand-hold near-field imaging device of this embodiment, be used for measuring the radiant quantity that incides on it.In the situation that millimeter-wave radiation (frequency range 30GHz-500GHz), this radiometer 1 is to the millimeter-wave radiation sensitivity.In order to carry out Measurement accuracy, for example, this radiometer 1 can be the narrow beam radiometer.
This hand-hold near-field imaging device also comprises radiation guiding device 2, is used for being directed to from the radiation of target object radiometer 1, so that the radiation of 1 pair of target object of radiometer is measured.For example, this radiation guiding device 2 can be catoptron.In the situation that millimeter-wave radiation, this catoptron can be smooth smooth sheet metal or the surperficial non-metal board that the coat of metal is arranged.
In order to measure, when this radiation guiding device 2 is in ad-hoc location, the radiation of target object in the particular orientation emission can be directed on the radiometer 1, thereby radiometer 1 can the radiant quantity of measurement target object on the point of this particular orientation.That is to say, when radiation guiding device 2 was in ad-hoc location, radiometer 1 can obtain the radiant quantity at certain some place on the object,, realized the some imaging of object that is.
Should be pointed out that above-mentioned " point " only is schematic concept, it represents in fact zone certain on the target object.According to factors such as the size of distance between this hand-hold near-field imaging device and the target object, Measurement Resolution, this zone (" point ") is changeable.
Fig. 2 shows the relation between radiometer 1, radiation guiding device 2 and the target object TO.Wherein, radiation guiding device 2 is depicted as catoptron to describe.Mark " 2 (1) ", " 2 (2) " represent respectively residing two diverse locations of catoptron.When catoptron is in 2 (1) position, will reflex on the radiometer 1 from the radiation at the upper point of target object TO A place along direction D (1); And when catoptron is in 2 (2) position, will reflex on the radiometer 1 from the radiation at the upper point of target object TO B place along direction D (2).Therefore, when catoptron was in 2 (1) position, radiometer 1 had been measured the radiation that the upper point of target object TO A sends; And when catoptron was in 2 (2) position, radiometer 1 had been measured the radiation that the upper point of target object TO B sends.According to measured radiation, can obtain respectively the image of target object point A and some B.According to how imaging of radiation, this is known to those skilled in the art, is not repeated herein.
For target object is carried out scanning imagery, radiation guiding device 2 can be around turning axle rotation, in order to upward target object is carried out one-dimensional scanning in specific direction (first direction as shown in Figure 2).As shown in Figure 2, radiation guiding device 2 can will be directed to one by one on the radiometer 1 from the upper radiation of sending along the every bit (zone) of first direction of target object TO, thereby realize the one-dimensional scanning of target object TO on first direction in rotary course.
For this purpose, radiometer 1 and radiation guiding device 2 should suitably be located.In the situation that radiation guiding device 2 is catoptron, the axis of radiometer 1 can pass the intersection point of catoptron turning axle and catoptron.At this moment, first direction can with the perpendicular direction of turning axle.For the technician of optical field, it is contemplated that multiple such configuration.In addition, the angle between mirror plane and the catoptron turning axle as required can be at 30 degree between 60 degree.For the plane target object, radiometer measurement effective scanning angle is between 60 degree are spent to 100.
In order to drive radiation guiding device 2 rotation, also comprise rotating driving device according to the hand-hold near-field imaging device of this embodiment.Those of ordinary skills can expect that various mechanism realizes this rotary actuation.For example, as shown in Figure 1, comprise according to the rotating driving device of the embodiment of the invention: support 3 is used for the fixing radiation guiding device 2 of supporting; Drive motor 4 links to each other with support 3, rotates thereby be used for driving the 2 high speed convolutions of support 3 drive radiation guiding devices; And transient equilibrium body 5, be arranged on the support 3 torsional moment during in order to 2 rotation of equilibrium radiation guiding device.
The as above operation of the hand-hold near-field imaging device of configuration below will be described.
If need two-dimensional scan, then can hand this device, to target object in the enterprising line scanning of the second direction vertical with first direction, thereby realize two-dimensional imaging.
In the present invention, based on the quasi-optics principle of (millimeter wave) radiation, utilize narrow beam feed radiometer, through the radiation guiding device (for example, catoptron) of rotation, consist of the one dimension x wire scanister of single radiometer.According to the present invention, only utilize single (narrow beam) radiometer, just can realize closely directly to the target object scanning imagery.In addition, hand-held this scanister vertically moves, and can finish the two-dimensional scan imaging.
Below only be the preferred embodiments of the present invention.Those of ordinary skill in the art can expect multiple modification and of equal value the replacement.For example, in the above description, the radiation guiding device has been described as an example of catoptron example.But radiation guiding device of the present invention is not limited to catoptron, but can realize with miscellaneous part.For example, those skilled in the art can expect utilizing concave mirror to replace above-mentioned catoptron, can realize purpose of the present invention equally.
In addition, in the above-described embodiments, only comprise single catoptron in the radiation guiding device.But the invention is not restricted to this.For example, the radiation guiding device can also comprise miscellaneous part, for example, another catoptron, thus optical propagation direction is deflected.In this case, the location of radiometer can be more flexible.
The preferred embodiments of the present invention more than have been described with reference to the drawings.But should be appreciated that provide these embodiment be for so that the disclosure fully and complete, rather than in order to limit the scope of the invention.Those skilled in the art can make multiple modification and change to these embodiment in the situation that does not break away from the spirit and scope of the present invention that limited by claims and equivalent thereof.Such modification and change also fall within the scope of the present invention.
Claims (5)
1. hand-hold near-field imaging device comprises:
Radiometer is used for measuring the radiant quantity that incides on it;
Rotatable radiation guiding device is used for the target object radiation that each point sends on specific direction is directed to radiometer one by one; And
Rotating driving device is used for driving the rotation of radiation guiding device,
Wherein, according to the radiant quantity that radiometer records, obtain target object along the one dimension image of described specific direction,
Described radiation guiding device is catoptron, and the angle of catoptron and turning axle is spent between 60 degree 30,
Wherein, described radiometer is single narrow beam radiometer,
Wherein, the axis of described radiometer passes the turning axle of described catoptron and the intersection point of described catoptron, and described radiation is incided on the described radiometer through the axis direction along described radiometer after the described mirror reflects.
2. hand-hold near-field imaging device according to claim 1, wherein, described radiation is millimeter wave, and described catoptron is the non-metal board that there is the coat of metal on sheet metal or surface.
3. hand-hold near-field imaging device according to claim 1, wherein, described rotating driving device comprises:
Support is used for the fixing radiation guiding device of supporting;
Drive motor links to each other with support, drives the rotation of radiation guiding device thereby be used for driving support; And
The transient equilibrium body is arranged on the support, the torsional moment when rotating in order to the equilibrium radiation guiding device.
4. a right to use requires the hand-hold near-field imaging device described in 1 to come target object is carried out the method for scanning imagery, comprising:
Utilize rotating driving device, drive the rotation of radiation guiding device;
Utilize radiometer, the radiation guiding device is measured from the radiation that target object is directed on it; And
According to the measurement result of radiometer, obtain the one dimension image of target object on specific direction.
5. method according to claim 4 also comprises:
Move described hand-hold near-field imaging device along the other direction vertical with described specific direction, thereby realize the two-dimensional scan imaging to target object.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910085552 CN101900606B (en) | 2009-05-25 | 2009-05-25 | Hand-hold near-field imaging device and scan imaging method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200910085552 CN101900606B (en) | 2009-05-25 | 2009-05-25 | Hand-hold near-field imaging device and scan imaging method thereof |
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| CN101900606A CN101900606A (en) | 2010-12-01 |
| CN101900606B true CN101900606B (en) | 2013-09-18 |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6417502B1 (en) * | 1998-08-05 | 2002-07-09 | Microvision, Inc. | Millimeter wave scanning imaging system having central reflectors |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6417502B1 (en) * | 1998-08-05 | 2002-07-09 | Microvision, Inc. | Millimeter wave scanning imaging system having central reflectors |
Non-Patent Citations (1)
| Title |
|---|
| JP特开平8-152417A 1996.06.11 |
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| CN101900606A (en) | 2010-12-01 |
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