CN103839325B - Image detection device - Google Patents
Image detection device Download PDFInfo
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- CN103839325B CN103839325B CN201410087760.0A CN201410087760A CN103839325B CN 103839325 B CN103839325 B CN 103839325B CN 201410087760 A CN201410087760 A CN 201410087760A CN 103839325 B CN103839325 B CN 103839325B
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- polarizing coating
- detection device
- image detection
- light source
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Abstract
The invention provides a kind of image detection device.This image detection device includes: installing rack (10)；Face battle array transmitted light source (20), is arranged on installing rack (10), sends transmission light to thing to be detected；CCD camera (30), is arranged on installing rack (10), and camera lens is towards face battle array transmitted light source (20)；First polarizing coating (40), is arranged on the transmission light incident side of thing to be detected；Second polarizing coating (50), is arranged on the transmission light emitting side of thing to be detected；Transmission light passes the first polarizing coating (40) and the second polarizing coating (50) afterwards by the image transmitting of thing to be detected to CCD camera (30).Image detection device according to the present invention, it is possible to solve the problem that the thing to be detected containing birefringent material cannot accurately, it clearly and effectively be differentiated by image detection device of the prior art.
Description
Technical field
The present invention relates to image sensing identification technical field, in particular to a kind of image detection device.
Background technology
At present, transmitted light source and CCD camera are combined to differentiate counterfeit money, identify that the situation of bill is day by day as many.In market
On, in order to improve the azimuthal capability of coin and bill etc., birefringent material enters finance neck as anti-counterfeiting mark the most more and more
Territory.The combination unit of traditional transmitted light source and CCD camera is due to the restriction of structure, it is impossible to identify high molecular polymer ticket
The information that birefringent material according to is comprised, therefore cannot fast and effeciently differentiate coin to be detected and bill etc.,
And the image differentiated and result are often due to information fails to read completely and do not knows or inaccurate, cause coin and bill
Distinguishing ability relatively low, it is impossible to meet use needs.
Summary of the invention
It is desirable to provide a kind of image detection device, with solve image detection device of the prior art cannot accurate, clear,
The problem effectively thing to be detected containing birefringent material differentiated.
To achieve these goals, according to an aspect of the invention, it is provided a kind of image detection device, including: installing rack；
Face battle array transmitted light source, is arranged on installing rack, sends transmission light to thing to be detected；CCD camera, is arranged on installing rack,
And camera lens is towards face battle array transmitted light source；First polarizing coating, is arranged on the transmission light incident side of thing to be detected；Second polarizing coating, if
Put the transmission light emitting side at thing to be detected；Transmission light through after the first polarizing coating and the second polarizing coating by the image of thing to be detected
Transmission is to CCD camera.
Further, the first polarizing coating is sticked on the transmission light injection surface of face battle array transmitted light source.
Further, the size and shape of the first polarizing coating is identical with the size and shape of face battle array transmitted light source.
Further, the size and shape of the first polarizing coating is identical with the lens shape of CCD camera and size, and corresponding CCD
Photographic head is arranged.
Further, the first polarizing coating is arranged on the position between face battle array transmitted light source and thing to be detected.
Further, the second polarizing coating is sticked on the camera lens of CCD camera.
Further, the second polarizing coating is arranged on the position between CCD camera and thing to be detected.
Further, the angle between polarization axle and the polarization axle of the second polarizing coating of the first polarizing coating is adjustable.
Further, CCD camera is rotatably arranged on installing rack around the first horizontal rotating shaft.
Further, battle array transmitted light source in face is rotatably arranged on installing rack around the second horizontal rotating shaft.
Further, the distance between camera lens and the face battle array transmitted light source of CCD camera is adjustable.
Further, image detection device also includes secondary light source, and secondary light source is arranged on the camera lens week side of CCD camera.
Application technical scheme, image detection device includes: installing rack；Face battle array transmitted light source, is arranged on installing rack,
Transmission light is sent to thing to be detected；CCD camera, is arranged on installing rack, and camera lens is towards face battle array transmitted light source；First is inclined
Vibrating diaphragm, is arranged on the transmission light incident side of thing to be detected；Second polarizing coating, is arranged on the transmission light emitting side of thing to be detected；Thoroughly
Penetrate light through after the first polarizing coating and the second polarizing coating by the image transmitting of thing to be detected to CCD camera.Using the present invention
Image detection device treat detectable substance when detecting, transmission light can arrive on thing to be detected through polarizing coating, due to be checked
Survey the transmission light difference that the birefringent material in thing allows to pass through, therefore can form different identification information, and image at CCD
Show in Tou, thus form cleaning and identify information accurately, the thing to be detected containing birefringent material is carried out accurate and effective
Discriminating.
Accompanying drawing explanation
The accompanying drawing of the part constituting the present invention is used for providing a further understanding of the present invention, the illustrative examples of the present invention and
Its explanation is used for explaining the present invention, is not intended that inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 shows the structural representation of the image detection device according to the first embodiment of the present invention；
Fig. 2 shows the structural representation of image detection device according to the second embodiment of the present invention；
Fig. 3 shows the structural representation of image detection device according to the third embodiment of the invention；
Fig. 4 shows the structural representation of image detection device according to the fourth embodiment of the invention；And
Fig. 5 shows the structural representation of image detection device according to the fifth embodiment of the invention.
Description of reference numerals: 10, installing rack；20, face battle array transmitted light source；30, CCD camera；40, the first polarizing coating；
50, the second polarizing coating；60, secondary light source；21, the second horizontal rotating shaft；31, the first horizontal rotating shaft；32, regulating part.
Detailed description of the invention
Below with reference to accompanying drawing and describe the present invention in detail in conjunction with the embodiments.It should be noted that in the case of not conflicting,
Embodiment in the application and the feature in embodiment can be mutually combined.
As shown in Figures 1 to 5, according to embodiments of the invention, image detection device includes installing rack 10, face battle array transmitted light source
20, CCD camera the 30, first polarizing coating 40 and the second polarizing coating 50.The installation that installing rack 10 is other parts provides basis；
Face battle array transmitted light source 20 is arranged on installing rack 10, sends transmission light to thing to be detected；CCD camera 30 is arranged on installing rack
On 10, and camera lens is towards face battle array transmitted light source 20, to receive image or the Word message that transmission light is formed through thing to be detected；
First polarizing coating 40 is arranged on the transmission light incident side of thing to be detected, and the transmission light injected on thing to be detected is carried out polarization manipulation；
Second polarizing coating 50, is arranged on the transmission light emitting side of thing to be detected, carries out the transmission light after thing to be detected at polarization
Reason, in order to form clear image or Word message accurately；After transmission light passes the first polarizing coating 40 and the second polarizing coating 50
By the image transmitting of thing to be detected to CCD camera 30.
When detectable substance for the treatment of image detection device in the employing present invention detects, transmission light can arrive to be checked through polarizing coating
Survey on thing, owing to the birefringent material in thing to be detected allows the transmission light passed through different, therefore at the first polarizing coating 40 and second
Different identification information can be formed under the polarization of polarizing coating 50, and show in CCD camera, the first polarization
Film 40 and the second polarizing coating 50 coordinate, and can obtain the identification included in the birefringent material on thing to be detected the most exactly
Information, can carry out quicker, accurate and effective discriminating to the thing to be detected containing birefringent material.Additionally, polarizing coating
The scattering light in transmission light can also be got rid of, enable the transmission light right path in light transmission shaft is injected into CCD camera 30, from
And make the image collected or word become apparent from nature.
In conjunction with shown in Figure 1, according to the first embodiment of the present invention, the first polarizing coating 40 of image detection device is sticked in face
On the transmission light injection surface of battle array transmitted light source 20, and the size and shape of the first polarizing coating 40 and face battle array transmitted light source 20 is big
Little identical with shape.Second polarizing coating 50 is sticked on the camera lens of CCD camera 30, and size and shape images with CCD
The camera lens of 30 is consistent.Preferably, the camera lens week side at CCD camera 30 can also arrange secondary light source 60.
In order to the information that the birefringent material treated in detectable substance is comprised can have more accurately recognition effect clearly,
Angle between polarization axle and the polarization axle of the second polarizing coating 50 of the first polarizing coating 40 is adjustable.Preferably, the first polarizing coating 40
Polarization axle and the polarization axle of the second polarizing coating 50 between can become 45 degree, parallel or perpendicular.Certainly, the first polarization
Angle between polarization axle and the polarization axle of the second polarizing coating 50 of film 40 is it can also be provided that fixed value.
Transparent plastic coin or other bill scribbling birefringent material are detected by the image detection device in using the present embodiment
Time, face battle array transmitted light source 20 sends transmission light, through arriving transparent plastic coin to be detected or bill after the first polarizing coating 40,
Owing to different birefringent materials allows the transmission light passed through and differs, therefore can be formed after thing to be detected at transmission light
Different identification information, these identify information with transmission light together through the second polarizing coating 50, subsequently into CCD camera 30
Interior formation image or Word message, just can obtain included in thing to be detected rapidly and accurately according to these images or Word message
Information such that it is able to effectively reach false distinguishing effect.
Phase para-position in said structure, between the polarization axle needing the polarization axle to the first polarizing coating 40 and the second polarizing coating 50
When the relation of putting is adjusted, can only adjust the polarization axle of the first polarizing coating 40 and the second polarizing coating 50 polarization axle one of them,
Can also adjust the polarization axle of two polarizing coatings, the mode of adjustment can be multiple simultaneously, such as, regulate the first polarizing coating 40 and make it
At self place rotation with in surface, or regulation the second polarizing coating 50, make the second polarizing coating 50 at its place rotation with in surface.
In conjunction with shown in Figure 2, according to the second embodiment of the present invention, the structure of image detection device and the knot of first embodiment
Structure is essentially identical, and difference is, in the present embodiment, eliminates secondary light source 60, the size of the first polarizing coating 40 and shape
Shape also and differs with the size and shape of face battle array transmitted light source 20.In the present embodiment, the size of the first polarizing coating 40 and shape
Shape can be changed as desired, and the position that arranges of the first polarizing coating 40 needs to make transmission light be obtained after thing to be detected
The image information taken can be intactly through the first polarizing coating 40.Preferably, in the present embodiment, the size of the first polarizing coating 40
Identical with the lens shape of CCD camera 30 and size with shape, and corresponding CCD camera 30 arranges.In the present embodiment
The using method of image detection device identical with first embodiment, here is omitted.
In conjunction with shown in Figure 3, according to the third embodiment of the invention, the structure of image detection device and the knot of first embodiment
Structure is essentially identical, and difference is, in the present embodiment, eliminates secondary light source 60, and the first polarizing coating 40 is arranged on face
Position between battle array transmitted light source 20 and thing to be detected, the second polarizing coating 50 be arranged on CCD camera 30 and thing to be detected it
Between position.In the present embodiment, the size and shape of the first polarizing coating 40 and the second polarizing coating 50 all with face battle array transmitted light source
The size and shape of 20 is identical, and this set is advantageous in that, substantially can ensure that the transmission light sent from face battle array transmitted light source 20
Necessarily can be all through the first polarizing coating 40 and the second polarizing coating at image entrained after thing to be detected and Word message
50, therefore the requirement arranging position and set-up mode for the first polarizing coating 40 and the second polarizing coating 50 is relatively low, arranges structure
Simpler convenience.Certainly, the size and shape of the first polarizing coating 40 and the second polarizing coating 50 all can be carried out as desired
Change, it is not limited to the structure defined in the present embodiment.The using method of the image detection device in the present embodiment and first
Embodiment is identical, and here is omitted.
In conjunction with shown in Figure 4, according to the fourth embodiment of the invention, the first polarizing coating 40 of image detection device is sticked in face
On the transmission light injection surface of battle array transmitted light source 20, and the size and shape of the first polarizing coating 40 and face battle array transmitted light source 20 is big
Little identical with shape.Second polarizing coating 50 is sticked on the camera lens of CCD camera 30, and size and shape images with CCD
The camera lens of 30 is consistent.Preferably, the camera lens week side at CCD camera 30 can also arrange secondary light source 60.
In the present embodiment, in order to regulate between the first polarizing coating 40 place plane and the second polarizing coating 50 place plane
Angle, so that image detection device can be applicable to more kinds of situation, CCD camera 30 is rotatable around the first horizontal rotating shaft 31
Be arranged on installing rack 10.When image detection device works, CCD camera 30 can be regulated as required so that it is around
First horizontal rotating shaft 31 turns to correct position, to regulate the direction of the camera lens reception transmission light of CCD camera 30, thus obtains
Natural image information must be become apparent from.Preferably, the camera lens week side at CCD camera 30 can also arrange secondary light source 60.
Preferably, the distance between camera lens and the face battle array transmitted light source 20 of CCD camera 30 is adjustable.In the present embodiment, CCD
Photographic head 30 can regulate the distance between the camera lens of CCD camera 30 and face battle array transmitted light source 20 by adjusting regulating part 32,
The camera lens making CCD camera 30 is in a suitable height.Regulating part 32 can be an adjusting knob, rotates this regulation
Knob, it is possible to the camera lens controlling CCD camera 30 rises or declines.
The using method of the image detection device in the present embodiment is identical with first embodiment, and here is omitted.
In conjunction with shown in Figure 5, according to the fifth embodiment of the invention, in the structure of image detection device and the 4th embodiment
Structure is essentially identical, and difference is, in the present embodiment and be not provided with secondary light source 60, and the face battle array transmission light in the present embodiment
Source 20 is rotatably arranged on installing rack 10 around the second horizontal rotating shaft 21, therefore can regulate face battle array transmitted light source 20 and send
Transmission light and horizontal plane between angle, additionally, the aperture size of the face battle array transmitted light source 20 in the present embodiment is adjustable, therefore
Go for the detection of more kinds of thing to be detected, such as transparent plastic coin or other scribble the bill of birefringent material, biological material
On material and preparation.
The image detection device of the present invention also apply be applicable to biology, medical domain, to observe microorganism, tissue samples etc.
And statistics.As can be seen from the above description, the above embodiments of the present invention achieve following technique effect:
1, the information that the birefringent material in thing to be detected that can identify more rapidly and accurately and reduce is comprised, play more added with
The false proof discriminating effect of effect.
2, the scattering light in transmission light can be got rid of, enable the transmitted ray right path to enter into CCD camera in light transmission shaft,
The image collected is made to become apparent from nature.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for those skilled in the art
For, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, any amendment of being made, etc.
With replacement, improvement etc., should be included within the scope of the present invention.
Claims (11)
1. an image detection device, it is characterised in that including:
Installing rack (10)；
Face battle array transmitted light source (20), is arranged on described installing rack (10), sends transmission light to thing to be detected；
CCD camera (30), is arranged on described installing rack (10), and camera lens is towards described battle array transmitted light source (20)；
First polarizing coating (40), is arranged on the transmission light incident side of described thing to be detected；
Second polarizing coating (50), is arranged on the transmission light emitting side of described thing to be detected；
Described transmission light passes described first polarizing coating (40) and described second polarizing coating (50) afterwards by described to be detected
The image transmitting of thing to described CCD camera (30), the polarization axle of described first polarizing coating (40) and described second inclined
Angle between the polarization axle of vibrating diaphragm (50) is adjustable.
Image detection device the most according to claim 1, it is characterised in that described first polarizing coating (40) is sticked described
On the transmission light injection surface in face battle array transmitted light source (20).
Image detection device the most according to claim 2, it is characterised in that the size of described first polarizing coating (40) and shape
Shape is identical with the size and shape of described battle array transmitted light source (20).
Image detection device the most according to claim 2, it is characterised in that the size of described first polarizing coating (40) and shape
Shape is identical with the lens shape of described CCD camera (30) and size, and corresponding described CCD camera (30) sets
Put.
Image detection device the most according to claim 1, it is characterised in that described first polarizing coating (40) is arranged on described
Position between face battle array transmitted light source (20) and described thing to be detected.
Image detection device the most according to claim 1, it is characterised in that described second polarizing coating (50) is sticked described
On the camera lens of CCD camera (30).
Image detection device the most according to claim 1, it is characterised in that described second polarizing coating (50) is arranged on described
Position between CCD camera (30) and described thing to be detected.
Image detection device the most according to claim 6, it is characterised in that described CCD camera (30) is around the first level
Rotating shaft (31) is rotatably arranged on described installing rack (10).
Image detection device the most according to claim 2, it is characterised in that described battle array transmitted light source (20) is around the second water
Flat turn axle (21) is rotatably arranged on described installing rack (10).
Image detection device the most according to any one of claim 1 to 9, it is characterised in that described CCD camera (30)
Camera lens and described battle array transmitted light source (20) between distance adjustable.
11. image detection devices according to any one of claim 1 to 9, it is characterised in that described image detection device is also
Including secondary light source (60), described secondary light source (60) is arranged on the camera lens week side of described CCD camera (30).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410087760.0A CN103839325B (en) | 2014-03-11 | 2014-03-11 | Image detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410087760.0A CN103839325B (en) | 2014-03-11 | 2014-03-11 | Image detection device |
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| Publication Number | Publication Date |
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| CN103839325A CN103839325A (en) | 2014-06-04 |
| CN103839325B true CN103839325B (en) | 2016-08-17 |
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| CN201410087760.0A Active CN103839325B (en) | 2014-03-11 | 2014-03-11 | Image detection device |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105241887A (en) * | 2015-09-25 | 2016-01-13 | 黄梦漪 | Injection product butt fusion mark detector |
| CN107682693B (en) * | 2017-11-07 | 2023-07-14 | 歌尔科技有限公司 | Device and method for detecting bad lighting point of image sensor |
| CN108174098A (en) * | 2017-12-29 | 2018-06-15 | 武汉大学 | A kind of dust detection and method |
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|---|---|---|---|---|
| GB2328180A (en) * | 1997-08-14 | 1999-02-17 | De La Rue Thomas & Co Ltd | Security device comprising a birefringent film |
| CN101686303A (en) * | 2008-09-27 | 2010-03-31 | 威海华菱光电有限公司 | Contact type image sensor |
| CN102016493A (en) * | 2008-04-28 | 2011-04-13 | 英诺薄膜有限公司 | Method for authenticating polymer films |
| CN202083622U (en) * | 2011-03-02 | 2011-12-21 | 中国石油化工股份有限公司 | Device for measuring birefringence of plastic film within visible light waveband |
| CN203746143U (en) * | 2014-03-11 | 2014-07-30 | 威海华菱光电股份有限公司 | Image detection apparatus |
-
2014
- 2014-03-11 CN CN201410087760.0A patent/CN103839325B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2328180A (en) * | 1997-08-14 | 1999-02-17 | De La Rue Thomas & Co Ltd | Security device comprising a birefringent film |
| CN102016493A (en) * | 2008-04-28 | 2011-04-13 | 英诺薄膜有限公司 | Method for authenticating polymer films |
| CN101686303A (en) * | 2008-09-27 | 2010-03-31 | 威海华菱光电有限公司 | Contact type image sensor |
| CN202083622U (en) * | 2011-03-02 | 2011-12-21 | 中国石油化工股份有限公司 | Device for measuring birefringence of plastic film within visible light waveband |
| CN203746143U (en) * | 2014-03-11 | 2014-07-30 | 威海华菱光电股份有限公司 | Image detection apparatus |
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| CN103839325A (en) | 2014-06-04 |
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