CN103871151A - Contact image detection device and application method thereof - Google Patents
Contact image detection device and application method thereof Download PDFInfo
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- CN103871151A CN103871151A CN201410088206.4A CN201410088206A CN103871151A CN 103871151 A CN103871151 A CN 103871151A CN 201410088206 A CN201410088206 A CN 201410088206A CN 103871151 A CN103871151 A CN 103871151A
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Abstract
The invention provides a contact image detection device and an application method thereof. The contact image detection device comprises a transmission light source part (10) comprising a transmission light source (11), an image conversion part (20) arranged by corresponding to the transmission light source part (10), a first polarizing film (30) arranged at the transmission light incident side of an object to be detected and a second polarizing film (40) arranged at the transmission light emergent side of the object to be detected, wherein an optical image of the object to be detected is transmitted to the image conversion part (20) after the transmission light of the transmission light source (11) passes by the first polarizing film (30) and the second polarizing film (40), and the optical image is converted to an electric signal by the image conversion part (20). According to the contact image detection device, the problem that the contact image detection device in the prior art cannot identify a dual-refraction material is solved.
Description
Technical field
The present invention relates to image sensing area, in particular to a kind of contact type image pick-up unit and application process thereof.
Background technology
At present, contact-type image sensor has not only been applied in facsimile recorder, scanner, all-in-one multifunctional machine field, is also applied to more the financial field such as currency counting and detecting machine and automatic teller machine.When applying such contact-type image sensor currency, bill etc. being scanned, transmitted light can penetrate currency, bill etc., and transmitted light source faces light contact-type image sensor and just may be read into corresponding information.
But for the combination of traditional transmitted light source and contact-type image sensor, due to the restriction of structure, contained birefringent material on the more current transparent plastic coin of its None-identified and bill.And birefringent material also enters financial field as anti-counterfeiting mark at present, this just has higher requirement to imageing sensor.
Summary of the invention
The present invention aims to provide a kind of contact type image pick-up unit and application process thereof, to solve the problem of contact type image pick-up unit None-identified birefringent material in prior art.
To achieve these goals, according to an aspect of the present invention, provide a kind of contact type image pick-up unit, having comprised: transmitted light source portion, comprises transmitted light source; Image converter section, setting corresponding to transmitted light source portion; The first polarizing coating, is arranged on the transmitted light light incident side of thing to be detected; The second polarizing coating, is arranged on the transmitted light emitting side of thing to be detected; The transmitted light of transmitted light source is passed to image converter section by the optical imagery of thing to be detected after the first polarizing coating and the second polarizing coating, and is converted to electric signal by image converter section.
Further, transmitted light source portion also comprises transmitted light source mount pad, and transmitted light source is arranged on transmitted light source mount pad.
Further, the first polarizing coating is sticked or is embedded on the surface of the transmitted light emitting side of transmitted light source mount pad.
Further, transmitted light source portion also comprises the first transparent panel, and the first transparent panel is arranged on the outside of the first polarizing coating.
Further, transmitted light source portion also comprises the first transparent panel, and the first transparent panel is arranged on the surface of transmitted light emitting side of transmitted light source mount pad, and the first polarizing coating is sticked or is embedded on the outside surface of the first transparent panel.
Further, image converter section comprises: framework; Optical lens, corresponding transmitted light source is arranged in framework; Photoelectric commutator, is arranged on the transmitted light emitting side of optical lens, and the optical signalling receiving is converted to electric signal; Circuit board, is arranged on the bottom of framework, and is electrically connected with photoelectric commutator.
Further, the second polarizing coating is sticked or is embedded on the surface of the transmitted light light incident side of framework.
Further, the second polarizing coating is sticked on the transmitted light light incident side surface of optical lens or on transmitted light emitting side surface.
Further, image converter section also comprises the second transparent panel, and the second transparent panel is arranged on the surface of transmitted light light incident side of framework, and the second polarizing coating is sticked or is embedded on the outside surface of the second transparent panel.
Further, framework also comprises standing groove and is arranged on the secondary light source in standing groove, secondary light source is arranged on the outer circumferential side of optical lens, and the transmitted light source incident end of optical lens stretches in standing groove, and the second polarizing coating is arranged on the opening part of the transmitted light light incident side of standing groove.
Further, contact type image pick-up unit also comprises mounting bracket, and transmitted light source portion is fixedly installed on mounting bracket, and image converter section is articulated on mounting bracket, and angle between the first polarizing coating place plane and the second polarizing coating place plane is adjustable.
Further, contact type image pick-up unit also comprises polarizing coating mount pad, the first polarizing coating and the second polarizing coating are all arranged on polarizing coating mount pad, and the first polarizing coating planar arranges rotationally in its institute, and the second polarizing coating planar arranges rotationally in its institute.
Further, the second polarizing coating is articulated on image converter section, and the second polarizing coating is parallel to the first polarizing coating, and the opto-electronic conversion plane of image converter section is adjustable with respect to the angle between the second polarizing coating place plane.
According to a further aspect in the invention, a kind of application process of contact type image pick-up unit is provided, contact type image pick-up unit comprises transmitted light source portion, image converter section, the first polarizing coating and the second polarizing coating, and application process comprises: thing to be detected is placed on to detection position; Adjust the first polarizing coating and/or the second polarizing coating; Thing to be detected is detected.
Further, the step of adjustment the first polarizing coating and/or the second polarizing coating comprises: the relative position relation of adjusting the polarization axle of the first polarizing coating and the polarization axle of the second polarizing coating.
Further, the step of adjusting the relative position relation of the polarization axle of the first polarizing coating and the polarization axle of the second polarizing coating comprises: adjust the polarization axle of the first polarizing coating and/or the second polarizing coating, make to parallel between the polarization axle of the first polarizing coating and the polarization axle of the second polarizing coating, perpendicular or in angle of 45 degrees.
Further, the step of adjustment the first polarizing coating and/or the second polarizing coating comprises: adjust the position relationship between the polarization axle of the first polarizing coating and/or the polarization axle of the second polarizing coating and the opto-electronic conversion plane of image converter section.
Further, the step of adjusting the position relationship between the polarization axle of the first polarizing coating and/or the polarization axle of the second polarizing coating and the opto-electronic conversion plane of image converter section comprises: adjust the polarization axle of the first polarizing coating, make to parallel between the polarization axle of the first polarizing coating and opto-electronic conversion plane, perpendicular or in angle of 45 degrees.
Further, the step of adjusting the position relationship between the polarization axle of the first polarizing coating and/or the polarization axle of the second polarizing coating and the opto-electronic conversion plane of image converter section comprises: adjust the polarization axle of the second polarizing coating, make to parallel between the polarization axle of the second polarizing coating and opto-electronic conversion plane, perpendicular or in angle of 45 degrees.
Apply technical scheme of the present invention, the comprising of contact type image pick-up unit: transmitted light source portion, comprises transmitted light source; Image converter section, setting corresponding to transmitted light source portion; The first polarizing coating, is arranged on the transmitted light light incident side of thing to be detected; The second polarizing coating, is arranged on the transmitted light emitting side of thing to be detected; The transmitted light of transmitted light source is passed to image converter section by the optical imagery of thing to be detected after the first polarizing coating and the second polarizing coating, and is converted to electric signal by image converter section.According to the contact type image pick-up unit that includes polarizing coating of the present invention, because the transmitted light light incident side at thing to be detected and transmitted light emitting side all arrange polarizing coating, therefore in the time that the thing to be detected that includes birefringent material is detected, can utilize polarizing coating to make birefringent material form different identifying informations, thereby can effectively detect and identify the information that the birefringent material in thing to be detected comprises, improve the detection performance of contact type image pick-up unit.
Accompanying drawing explanation
The accompanying drawing that forms a part of the present invention is used to provide a further understanding of the present invention, and schematic description and description of the present invention is used for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 shows the structural representation of the first embodiment of contact type image pick-up unit according to an embodiment of the invention;
Fig. 2 shows the structural representation of the second embodiment of contact type image pick-up unit according to an embodiment of the invention;
Fig. 3 shows the structural representation of the third embodiment of contact type image pick-up unit according to an embodiment of the invention;
Fig. 4 shows the structural representation of the 4th kind of embodiment of contact type image pick-up unit according to an embodiment of the invention;
Fig. 5 shows the structural representation of the 5th kind of embodiment of contact type image pick-up unit according to an embodiment of the invention;
Fig. 6 shows the structural representation of the 6th kind of embodiment of contact type image pick-up unit according to an embodiment of the invention;
Fig. 7 shows the structural representation of the 7th kind of embodiment of contact type image pick-up unit according to an embodiment of the invention;
Fig. 8 shows the structural representation of the transmitted light source portion of the 8th kind of embodiment of contact type image pick-up unit according to an embodiment of the invention;
Fig. 9 shows the structural representation of the transmitted light source portion of the 9th kind of embodiment of contact type image pick-up unit according to an embodiment of the invention;
Figure 10 shows the structural representation of the transmitted light source portion of the tenth kind of embodiment of contact type image pick-up unit according to an embodiment of the invention;
Figure 11 shows the structural representation of the transmitted light source portion of the 11 kind of embodiment of contact type image pick-up unit according to an embodiment of the invention;
Figure 12 shows the structural representation of the 12 kind of embodiment of contact type image pick-up unit according to an embodiment of the invention;
Figure 13 shows the structural representation of the 13 kind of embodiment of contact type image pick-up unit according to an embodiment of the invention;
Figure 14 shows the structural representation of the 14 kind of embodiment of contact type image pick-up unit according to an embodiment of the invention;
Figure 15 shows the structural representation of the 15 kind of embodiment of contact type image pick-up unit according to an embodiment of the invention;
Figure 16 shows the image obtaining after contact type image pick-up unit of the prior art detects the bill that contains birefringent material;
Figure 17 shows the image obtaining after contact type image pick-up unit according to the present invention detects the bill that contains birefringent material;
Figure 18 shows the printing opacity schematic diagram while paralleling according to the polarization axle of the first polarizing coating of contact type image pick-up unit of the present invention and the second polarizing coating; And
Figure 19 shows the printing opacity schematic diagram when perpendicular according to the polarization axle of the first polarizing coating of contact type image pick-up unit of the present invention and the second polarizing coating.
Description of reference numerals: 10, transmitted light source portion; 20, image converter section; 30, the first polarizing coating; 40, the second polarizing coating; 50, mounting bracket; 60, polarizing coating mount pad; 70, display part; 11, transmitted light source; 12, transmitted light source mount pad; 13, the first transparent panel; 21, framework; 22, optical lens; 23, photoelectric commutator; 24, circuit board; 25, the second transparent panel; 26, standing groove; 27, secondary light source; 31, the first polarization axle; 41, the second polarization axle.
Embodiment
Hereinafter also describe the present invention in detail with reference to accompanying drawing in conjunction with the embodiments.It should be noted that, in the situation that not conflicting, the feature in embodiment and embodiment in the application can combine mutually.
Polarizing coating has another name called light polarizing film, english name: polarizer film.Polarizing coating has a polarization axle.The initial transmitted light penetrating of transmitted light source 11 is therefrom mind-set periphery multiple directions diffusion, as shown in figure 18, in the time that between the first polarization axle 31 of the first polarizing coating 30 and the second polarization axle 41 of the second polarizing coating 40, angle is 0 degree (parallel), light percent of pass is the highest, the light seeing through after processing by polarizing coating is presented on display part 70, as the part with arrow on display part in Figure 18 70.When rotating at least one polarizing coating, polarization axle angle from 0 to 90 degree of the first polarization axle 31 of the first polarizing coating 30 and the second polarization axle 41 of the second polarizing coating 40 is changed, now the percent of pass of transmitted light reduces gradually, at 90 degree (vertical time minimum) as Figure 19, on display part 70, can see, the light seeing through does not have substantially.Therefore, by regulating the angle of polarization axle of two polarizing coatings, can effectively regulate the percent of pass of transmitted light, thereby realize the object of the adjusting to transmitted light.
As shown in Fig. 1 to Figure 15, according to embodiments of the invention, contact type image pick-up unit comprises transmitted light source portion 10, image converter section 20, the first polarizing coating 30 and the second polarizing coating 40.Transmitted light source portion 10 comprises transmitted light source 11, and transmitted light source 11 sends transmitted light to thing to be detected; Image converter section 20 setting corresponding to transmitted light source portion 10; The first polarizing coating 30 is arranged on the transmitted light light incident side of thing to be detected; The second polarizing coating 40 is arranged on the transmitted light emitting side of thing to be detected; The transmitted light of transmitted light source 11 is passed to image converter section 20 by the optical imagery of thing to be detected after the first polarizing coating 30 and the second polarizing coating 40, and be converted to electric signal by image converter section 20, electric signal is reduced to picture signal after the processing such as processor, just can determine the true and false of the things to be detected such as bill according to this picture signal.The size and shape of the first polarizing coating 30 and the second polarizing coating 40 all can be according to actual needs and corresponding change does not limit the size and shape of the first polarizing coating 30 and the second polarizing coating 40 herein.
Preferably, angle between the polarization axle of the polarization axle of the first polarizing coating 30 and the second polarizing coating 40 is adjustable, thereby can choose suitable polarization axle angle for the difference of the material of thing to be detected, to obtain better image display effect, reach better anti-counterfeit recognition effect.
By the transmitted light light incident side at thing to be detected and transmitted light emitting side, polarizing coating is set respectively, in the time detecting thing to be detected, just can identify the birefringent material in thing to be detected by polarizing coating, thereby can effectively detect the information that the birefringent material in thing to be detected comprises, the more clear image information of recording on thing to be detected of reducing exactly, has therefore effectively improved the detection efficiency of contact type image pick-up unit and has detected performance.
Transmitted light source portion 10 also comprises transmitted light source mount pad 12, and transmitted light source 11 is arranged on transmitted light source mount pad 12.On transmitted light source mount pad 12, be provided with opening, the transmitted light of transmitted light source 11 penetrates and arrives thing to be detected from opening.
Preferably, be also provided with standing groove 26 in framework, be provided with secondary light source 27 in standing groove 26, secondary light source 27 is arranged on the outer circumferential side of optical lens 22, and this secondary light source 27 is for example linear light sorurce.The transmission light incident side of optical lens 22 stretches in standing groove 26, the transmitted light of being launched to receive better transmitted light source 11.
Above-mentioned thing to be detected can scribble for transparent plastic coin or other bill of birefringent material.
In conjunction with shown in Figure 1, according to the first embodiment of the present invention, transmitted light source portion 10 also comprises that the first transparent panel 13, the first transparent panels 13 are arranged on the surface of transmitted light emitting side of transmitted light source mount pad 12, and the first polarizing coating 30 is sticked on the outside surface of the first transparent panel 13.Image converter section 20 also comprises that the second transparent panel 25, the second transparent panels 25 are arranged on the surface of transmitted light light incident side of framework 21, and the second polarizing coating 40 is sticked on the outside surface of the second transparent panel 25.
In the time that contact type image pick-up unit is worked, transmitted light source 11 sends transmitted light and sees through the first polarizing coating 30 and arrive transparent plastic coin or other scribble on the bill of birefringent material, different birefringent materials allows the transmitted light difference seeing through, and can form different identifying informations.Transmitted light sees through the second polarizing coating 40 on the second transparent panel 25 of image converter section 20 again, then enter optical lens 22, from optical lens 22 other ends transmitted light out, be irradiated in the opto-electronic conversion plane of photoelectric commutator 23, photoelectric commutator 23 converts electric signal to the light signal receiving, and outwards exports as image or Word message.In the process detecting, original copy constantly moves, and the image of recording on it or Word message will be read continuously, complete the image information collecting process of scanned object.Compare the direct structure that but cannot collect birefringent material institute inclusion information through the birefringent material in thing to be detected of transmitted light source in traditional images pick-up unit, the present invention is increasing after polarizing coating, can effectively collect the expressed information of birefringent material, therefore can play better anti-counterfeit recognition effect.
In conjunction with shown in Figure 2, according to the second embodiment of invention, the structure of the structure of contact type image pick-up unit and the first embodiment is basic identical, difference is, in the present embodiment, the second polarizing coating 40 is to be not sticked on the second transparent panel 25, and is arranged on the opening part of the transmitted light light incident side of standing groove 26.The opening of the size and shape of the second polarizing coating 40 herein and the transmitted light light incident side of standing groove 26 adapts.In present embodiment, the working method of contact type image pick-up unit is identical with the first embodiment, repeats no more here.
In conjunction with shown in Figure 3, according to the third embodiment of the present invention, the structure of the structure of contact type image pick-up unit and the first embodiment is basic identical, difference is, in the present embodiment, the second polarizing coating 40 is to be not sticked on the second transparent panel 25, but is sticked on the transmitted light light incident side surface of optical lens 22.The shape on the transmitted light light incident side surface of the size and shape of the second polarizing coating 40 herein and optical lens 22 adapts.In present embodiment, the working method of contact type image pick-up unit is identical with the first embodiment, repeats no more here.
In conjunction with shown in Figure 4, according to the 4th kind of embodiment of the present invention, the structure of the structure of contact type image pick-up unit and the first embodiment is basic identical, and difference is, in the present embodiment, the second polarizing coating 40 is embedded on the outside surface of the second transparent panel 25.The size and shape of the second polarizing coating 40 herein can be selected according to actual needs voluntarily.In present embodiment, the working method of contact type image pick-up unit is identical with the first embodiment, repeats no more here.
In conjunction with shown in Figure 5, according to the 5th kind of embodiment of the present invention, the structure of the structure of contact type image pick-up unit and the first embodiment is basic identical, difference is, in the present embodiment, the second polarizing coating 40 is embedded on the surface combining with framework 21 of the second transparent panel 25.The size and shape of the second polarizing coating 40 herein can be selected according to actual needs voluntarily.In present embodiment, the working method of contact type image pick-up unit is identical with the first embodiment, repeats no more here.
In conjunction with shown in Figure 6, according to the 6th kind of embodiment of the present invention, the structure of the structure of contact type image pick-up unit and the first embodiment is basic identical, difference is, in the present embodiment, the second polarizing coating 40 is to be not sticked on the second transparent panel 25, but is sticked on the transmitted light emitting side surface of optical lens 22.The shape on the transmitted light emitting side surface of the size and shape of the second polarizing coating 40 herein and optical lens 22 adapts.In present embodiment, the working method of contact type image pick-up unit is identical with the first embodiment, repeats no more here.
In conjunction with shown in Figure 7, according to the 7th kind of embodiment of the present invention, the structure of the structure of contact type image pick-up unit and the first embodiment is basic identical, difference is, in the present embodiment, the second polarizing coating 40 is to be not sticked on the second transparent panel 25, but is sticked on the surface of the transmitted light light incident side of framework 21.The size and shape of the second polarizing coating 40 herein with can adapt with surface configuration and the size of the transmitted light light incident side of framework 21, also can regulate voluntarily according to actual conditions, only need to guarantee in the process detecting transmitted light through the second polarizing coating 40 laggard enter optical lens 22.In present embodiment, the working method of contact type image pick-up unit is identical with the first embodiment, repeats no more here.
Fig. 8 to Figure 11 shows the multiple different structure of transmitted light source portion 10, and the structure of the each transmitted light source portion 10 in Fig. 8 to Figure 11 all can match with the image converter section 20 in above-mentioned each embodiment, the contact type image pick-up unit having formed.
In conjunction with shown in Figure 8, according to the 8th kind of embodiment of the present invention, transmitted light source portion 10 comprises transmitted light source mount pad 12, transmitted light source 11 and the first transparent panel 13, the first polarizing coating 30 is embedded on the transmitted light emitting side surface of transmitted light source mount pad 12, the first transparent panel 13 is arranged on the outside of the first polarizing coating 30, and is sticked on the transmitted light emitting side surface of transmitted light source mount pad 12.The working method of contact type image pick-up unit is identical with the first embodiment in the present embodiment, repeats no more here.
In conjunction with shown in Figure 9, according to the 9th kind of embodiment of the present invention, transmitted light source portion 10 comprises transmitted light source mount pad 12, transmitted light source 11 and the first transparent panel 13, the first transparent panel 13 is sticked on the transmitted light emitting side surface of transmitted light source mount pad 12, and the first polarizing coating 30 is embedded on the outside surface of the first transparent panel 13.The working method of contact type image pick-up unit is identical with the first embodiment in the present embodiment, repeats no more here.
In conjunction with shown in Figure 10, according to the of the present invention ten kind of embodiment, transmitted light source portion 10 comprises transmitted light source mount pad 12, transmitted light source 11 and the first transparent panel 13, the first transparent panel 13 is sticked on the transmitted light emitting side surface of transmitted light source mount pad 12, the first polarizing coating 30 is embedded on the inside surface of the first transparent panel 13, and the transmitted light emitting side surface of this inside surface and transmitted light source mount pad 12 fits.The working method of contact type image pick-up unit is identical with the first embodiment in the present embodiment, repeats no more here.
In conjunction with shown in Figure 11, according to the 11 kind of embodiment of the present invention, transmitted light source portion 10 comprises that transmitted light source mount pad 12 and transmitted light source 11, the first polarizing coatings 30 are sticked on the transmitted light emitting side surface of transmitted light source mount pad 12.In present embodiment, save the first transparent panel 13.The working method of contact type image pick-up unit is identical with the first embodiment in the present embodiment, repeats no more here.
In a unshowned embodiment, transmitted light source portion 10 comprises that transmitted light source mount pad 12 and transmitted light source 11, the first polarizing coatings 30 are embedded on the transmitted light emitting side surface of transmitted light source mount pad 12.The working method of contact type image pick-up unit is identical with the first embodiment in the present embodiment, repeats no more here.
In conjunction with shown in Figure 12, according to the 12 kind of embodiment of the present invention, the structure of the structure of contact type image pick-up unit and the first embodiment is basic identical, difference is, contact type image pick-up unit also comprises polarizing coating mount pad 60, the first polarizing coating 30 and the second polarizing coating 40 are all arranged on polarizing coating mount pad 60, and the first polarizing coating 30 planar arranges rotationally in its institute, and the second polarizing coating 40 planar arranges rotationally in its institute.In the present embodiment, between the first polarizing coating 30 and the second polarizing coating 40 and transmitted light source portion 10 and image converter section 20, there is no annexation, the first polarizing coating 30 and the second polarizing coating 40 are all arranged on polarizing coating mount pad 60, and regulate by polarizing coating mount pad 60.By make the first polarizing coating 30 and the second polarizing coating 40 separately planar rotatable, the angle between the polarization axle of the first polarizing coating 30 and the polarization axle of the second polarizing coating 40 be can regulate, thereby different transparent plastic coin or the testing requirement of other bills met.Can be for paralleling between the polarization axle of the polarization axle of the first polarizing coating 30 and the second polarizing coating 40, perpendicular, become 45 degree or other is arbitrarily angled.Polarizing coating mount pad 60 herein can as a whole structure, also can be divided into the first polarizing coating mount pad and two structures of the second polarizing coating mount pad, wherein the first polarizing coating mount pad is specifically designed to the first polarizing coating 30 is adjusted, and the second polarizing coating mount pad is specifically designed to be adjusted the second polarizing coating 40.
In conjunction with shown in Figure 13, according to the 13 kind of embodiment of the present invention, the structure of the transmitted light source portion 10 of contact type image pick-up unit can be any in above-mentioned embodiment, the structure of image converter section 20 can be also any in above-mentioned embodiment, be with the difference of other embodiment, fixing in angle of 45 degrees between the second polarizing coating 40 place planes and the first polarizing coating 30 place planes.This fixed angle can be also other value.
In conjunction with shown in Figure 14, according to the 14 kind of embodiment of the present invention, the structure of the transmitted light source portion 10 of contact type image pick-up unit can be any in above-mentioned embodiment, the structure of image converter section 20 can be also any in above-mentioned embodiment, be with the difference of other embodiment, contact type image pick-up unit also comprises mounting bracket 50, transmitted light source portion 10 is fixedly installed on mounting bracket 50, image converter section 20 is articulated on mounting bracket 50, and the angle between the first polarizing coating 30 place planes and the second polarizing coating 40 place planes is adjustable, detect needs to tackle different bills.
In conjunction with shown in Figure 15, according to the 15 kind of embodiment of the present invention, the structure of the transmitted light source portion 10 of contact type image pick-up unit can be any in above-mentioned embodiment, the structure of image converter section 20 can be also any in above-mentioned embodiment, be with the difference of other embodiment, in the present embodiment, the second polarizing coating 40 is articulated on image converter section 20, the second polarizing coating 40 is parallel to the first polarizing coating 30, and the opto-electronic conversion plane of image converter section 20 is adjustable with respect to the angle between the second polarizing coating 40 place planes.Also the place plane of the first polarizing coating 30 remains parallel with the place plane of the second polarizing coating 40, only adjust the relative position of image converter section 20 with respect to the first polarizing coating 30, make the opto-electronic conversion plane of image converter section 20 adjustable with respect to the angle between the second polarizing coating 40 place planes, with this make the polarization axle of the first polarizing coating 30 and the opto-electronic conversion plane of image converter section 20 respectively parallel, vertical, become miter angle or other is arbitrarily angled, to tackle different application demands.
According to another aspect of the present invention, a kind of application process of contact type image pick-up unit is provided, this contact type image pick-up unit comprises transmitted light source portion 10, image converter section 20, the first polarizing coating 30 and the second polarizing coating 40, the first polarizing coating 30 is arranged on the transmitted light light incident side of thing to be detected, the second polarizing coating 40 is arranged on the transmitted light emitting side of thing to be detected, and the application process of this contact type image pick-up unit comprises: thing to be detected is placed on to detection position; Adjust the first polarizing coating 30 and/or the second polarizing coating 40; Thing to be detected is detected.
In the time that thing to be detected is detected, due to the variation of birefringent material, will inevitably cause corresponding the changing of refractive index of birefringent material, therefore also need correspondingly to adjust the angle between the polarization axle of the first polarizing coating 30 and the polarization axle of the second polarizing coating 40, or adjust the angle between the polarization axle of the first polarizing coating 30 and/or the polarization axle of the second polarizing coating 40 and the opto-electronic conversion plane of image converter section 20, so that final recognition structure shown in display device is more clear accurately, reach testing requirement.
Adjusting the first polarizing coating 30 and/or the second polarizing coating 40 divides and can be divided into two classes according to the object that will adjust and position relationship, the first kind is to adjust the relative position relation of the polarization axle of the first polarizing coating 30 and the polarization axle of the second polarizing coating 40, and Equations of The Second Kind is the angle of adjusting between the polarization axle of the first polarizing coating 30 and/or the polarization axle of the second polarizing coating 40 and the opto-electronic conversion plane of image converter section 20.
Step for the relative position relation of adjusting the polarization axle of the first polarizing coating 30 and the polarization axle of the second polarizing coating 40 in the first kind can comprise following several situation:
Adjust the polarization axle of the first polarizing coating 30, make to parallel between the polarization axle of the first polarizing coating 30 and the polarization axle of the second polarizing coating 40, perpendicular or in angle of 45 degrees.
Adjust the polarization axle of the second polarizing coating 40, make to parallel between the polarization axle of the first polarizing coating 30 and the polarization axle of the second polarizing coating 40, perpendicular or in angle of 45 degrees.
Adjust the polarization axle of the first polarizing coating 30 and the second polarizing coating 40 simultaneously, make to parallel between the polarization axle of the first polarizing coating 30 and the polarization axle of the second polarizing coating 40, perpendicular or in angle of 45 degrees.
These several adjustment modes all can make the angle between the polarization axle of the first polarizing coating 30 and the polarization axle of the second polarizing coating 40 realize adjustment, and this angle can be also other numerical value, can need to adjust voluntarily according to actual use.
Can comprise following several situation for the step of adjusting the position relationship between the polarization axle of the first polarizing coating 30 and/or the polarization axle of the second polarizing coating 40 and the opto-electronic conversion plane of image converter section 20 in Equations of The Second Kind:
Adjust the polarization axle of the first polarizing coating 30, make to parallel between the polarization axle of the first polarizing coating 30 and opto-electronic conversion plane, perpendicular or in angle of 45 degrees.
Adjust the polarization axle of the second polarizing coating 40, make to parallel between the polarization axle of the second polarizing coating 40 and opto-electronic conversion plane, perpendicular or in angle of 45 degrees.
Adjust the polarization axle of the first polarizing coating 30 and the polarization axle of the second polarizing coating 40 simultaneously, make to parallel between the polarization axle of the first polarizing coating 30 and opto-electronic conversion plane, perpendicular or in angle of 45 degrees, between the polarization axle of the second polarizing coating 40 and opto-electronic conversion plane, parallel, perpendicular or in angle of 45 degrees.
For the adjustment of the angle between the polarization axle of the first polarizing coating 30 and the polarization axle of the second polarizing coating 40, can with the polarization axle of the polarization axle of the first polarizing coating 30 and/or the second polarizing coating 40 and the opto-electronic conversion plane of image converter section 20 between the adjustment of angle coordinate and carry out, to reach the best identified effect to birefringent material.
In conjunction with shown in Figure 16, as can be seen from the figure, when the contact type image pick-up unit of employing prior art detects things to be detected such as the bills that contains birefringent material, can not identify the information that the birefringent material in thing to be detected comprises, therefore cannot scan the bearing mark in this bill, in surveyed area, be shown as white space a.
In conjunction with shown in Figure 17, after the contact type image pick-up unit that has adopted the application's method for making to produce, as can be seen from the figure, the information that originally birefringent material of the white space a of the central area of Figure 16 comprises is also known intactly and is restored, and be shown as image clearly, it is the shown part of region b in Figure 17, therefore apply the application's made contact type image pick-up unit that contains polarizing coating out, can know effectively the detection of the things to be detected such as the bill that contains birefringent material being carried out to the project such as false proof.
As can be seen from the above description, the above embodiments of the present invention have realized following technique effect:
1, can know the information comprising in the birefringent material of effectively identifying in thing to be detected, therefore can the true and false of the things to be detected such as bill be made more accurately and being differentiated.
2, can meet the testing requirement of the birefringent material of polytype different refractivity, there is better applicability.
3, simple in structure, easy to operate, detect precise and high efficiency more.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (19)
1. a contact type image pick-up unit, is characterized in that, comprising:
Transmitted light source portion (10), comprises transmitted light source (11);
Image converter section (20), setting corresponding to described transmitted light source portion (10);
The first polarizing coating (30), is arranged on the transmitted light light incident side of thing to be detected;
The second polarizing coating (40), is arranged on the transmitted light emitting side of described thing to be detected;
The transmitted light of described transmitted light source (11) is passed to described image converter section (20) by the optical imagery of described thing to be detected after described the first polarizing coating (30) and the second polarizing coating (40), and is converted to electric signal by described image converter section (20).
2. contact type image pick-up unit according to claim 1, is characterized in that, described transmitted light source portion (10) also comprises transmitted light source mount pad (12), and described transmitted light source (11) is arranged on described transmitted light source mount pad (12).
3. contact type image pick-up unit according to claim 2, is characterized in that, described the first polarizing coating (30) is sticked or is embedded on the surface of the transmitted light emitting side of described transmitted light source mount pad (12).
4. contact type image pick-up unit according to claim 3, is characterized in that, described transmitted light source portion (10) also comprises the first transparent panel (13), and described the first transparent panel (13) is arranged on the outside of described the first polarizing coating (30).
5. contact type image pick-up unit according to claim 2, it is characterized in that, described transmitted light source portion (10) also comprises the first transparent panel (13), described the first transparent panel (13) is arranged on the surface of transmitted light emitting side of described transmitted light source mount pad (12), and described the first polarizing coating (30) is sticked or is embedded on the outside surface of described the first transparent panel (13).
6. according to the contact type image pick-up unit described in any one in claim 1 to 5, it is characterized in that, described image converter section (20) comprising:
Framework (21);
Optical lens (22), corresponding described transmitted light source (11) is arranged in described framework (21);
Photoelectric commutator (23), is arranged on the transmitted light emitting side of described optical lens (22), and the optical signalling receiving is converted to electric signal;
Circuit board (24), is arranged on the bottom of described framework (21), and is electrically connected with described photoelectric commutator (23).
7. contact type image pick-up unit according to claim 6, is characterized in that, described the second polarizing coating (40) is sticked or is embedded on the surface of the transmitted light light incident side of described framework (21).
8. contact type image pick-up unit according to claim 6, is characterized in that, described the second polarizing coating (40) is sticked on the transmitted light light incident side surface of described optical lens (22) or on transmitted light emitting side surface.
9. contact type image pick-up unit according to claim 6, it is characterized in that, described image converter section (20) also comprises the second transparent panel (25), described the second transparent panel (25) is arranged on the surface of transmitted light light incident side of described framework (21), and described the second polarizing coating (40) is sticked or is embedded on the outside surface of described the second transparent panel (25).
10. contact type image pick-up unit according to claim 6, it is characterized in that, described framework (21) also comprises standing groove (26) and is arranged on the secondary light source (27) in described standing groove (26), described secondary light source (27) is arranged on the outer circumferential side of described optical lens (22), transmitted light source (11) the incident end of described optical lens (22) stretches in described standing groove (26), and described the second polarizing coating (40) is arranged on the opening part of the transmitted light light incident side of described standing groove (26).
11. contact type image pick-up units according to claim 6, it is characterized in that, described contact type image pick-up unit also comprises mounting bracket (50), described transmitted light source portion (10) is fixedly installed on described mounting bracket (50), it is upper that described image converter section (20) is articulated in described mounting bracket (50), and angle between described the first polarizing coating (30) place plane and described the second polarizing coating (40) place plane is adjustable.
12. contact type image pick-up units according to claim 1, it is characterized in that, described contact type image pick-up unit also comprises polarizing coating mount pad (60), described the first polarizing coating (30) and described the second polarizing coating (40) are all arranged on described polarizing coating mount pad (60), described the first polarizing coating (30) planar arranges rotationally in its institute, and described the second polarizing coating (40) planar arranges rotationally in its institute.
13. according to the contact type image pick-up unit described in any one in claim 1 to 5, it is characterized in that, described the second polarizing coating (40) is articulated on described image converter section (20), described the second polarizing coating (40) is parallel to described the first polarizing coating (30), and the opto-electronic conversion plane of described image converter section (20) is adjustable with respect to the angle between the plane of described the second polarizing coating (40) place.
The application process of 14. 1 kinds of contact type image pick-up units, it is characterized in that, described contact type image pick-up unit comprises transmitted light source portion (10), image converter section (20), the first polarizing coating (30) and the second polarizing coating (40), and described application process comprises:
Thing to be detected is placed on to detection position;
Adjust the first polarizing coating (30) and/or the second polarizing coating (40);
Thing to be detected is detected.
15. application processes according to claim 14, is characterized in that, the step of described adjustment the first polarizing coating (30) and/or the second polarizing coating (40) comprising:
Adjust the relative position relation of the polarization axle of the first polarizing coating (30) and the polarization axle of the second polarizing coating (40).
16. application processes according to claim 15, is characterized in that, the step of the relative position relation of the polarization axle of the polarization axle of described adjustment the first polarizing coating (30) and the second polarizing coating (40) comprising:
Adjust the polarization axle of the first polarizing coating (30) and/or the second polarizing coating (40), make to parallel between the polarization axle of the first polarizing coating (30) and the polarization axle of the second polarizing coating (40), perpendicular or in angle of 45 degrees.
17. application processes according to claim 14, is characterized in that, the step of described adjustment the first polarizing coating (30) and/or the second polarizing coating (40) comprising:
Adjust the position relationship between the polarization axle of the first polarizing coating (30) and/or the polarization axle of the second polarizing coating (40) and the opto-electronic conversion plane of image converter section (20).
18. application processes according to claim 17, it is characterized in that, the step of the position relationship between the polarization axle of the polarization axle of described adjustment the first polarizing coating (30) and/or the second polarizing coating (40) and the opto-electronic conversion plane of image converter section (20) comprises:
Adjust the polarization axle of the first polarizing coating (30), make to parallel between the polarization axle of the first polarizing coating (30) and opto-electronic conversion plane, perpendicular or in angle of 45 degrees.
19. application processes according to claim 17, it is characterized in that, the step of the position relationship between the polarization axle of the polarization axle of described adjustment the first polarizing coating (30) and/or the second polarizing coating (40) and the opto-electronic conversion plane of image converter section (20) comprises:
Adjust the polarization axle of the second polarizing coating (40), make to parallel between the polarization axle of the second polarizing coating (40) and opto-electronic conversion plane, perpendicular or in angle of 45 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410088206.4A CN103871151A (en) | 2014-03-11 | 2014-03-11 | Contact image detection device and application method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410088206.4A CN103871151A (en) | 2014-03-11 | 2014-03-11 | Contact image detection device and application method thereof |
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| CN103871151A true CN103871151A (en) | 2014-06-18 |
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| CN201410088206.4A Pending CN103871151A (en) | 2014-03-11 | 2014-03-11 | Contact image detection device and application method thereof |
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