CN203746144U - Contact type image detection apparatus - Google Patents
Contact type image detection apparatus Download PDFInfo
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- CN203746144U CN203746144U CN201420109085.2U CN201420109085U CN203746144U CN 203746144 U CN203746144 U CN 203746144U CN 201420109085 U CN201420109085 U CN 201420109085U CN 203746144 U CN203746144 U CN 203746144U
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- 238000006243 chemical reaction Methods 0.000 claims abstract description 23
- 238000000576 coating method Methods 0.000 claims description 157
- 239000011248 coating agent Substances 0.000 claims description 154
- 230000010287 polarization Effects 0.000 claims description 23
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- 230000011664 signaling Effects 0.000 claims description 3
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Abstract
The utility model provides a contact type image detection apparatus. The contact type image detection apparatus comprises a transmission light source portion (10) comprising a transmission light source (11), an image conversion portion (20) which is arranged to be opposite to the transmission light source portion (10) and comprises a photoelectric conversion chip, 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 emitting side of the object to be detected. Transmission light of the transmission light source (11), after passing through the first polarizing film (30) and the second polarizing film (40), transmits the optical image of the object to be detected to the photoelectric conversion chip of the image conversion portion (2) and is converted into electric signals by the photoelectric conversion chip of the image conversion portion (20). According to the utility model, the contact type image detection apparatus can solve the problem of incapability of identifying a birefringence material by use of a conventional contact type image detection apparatus in the prior art.
Description
Technical field
The utility model relates to image sensing technical field, in particular to a kind of contact type image pick-up unit.
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.
Utility model content
The utility model aims to provide a kind of contact type image pick-up unit, 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 utility model, 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, image converter section comprises opto-electronic conversion chip; 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 the optical imagery of thing to be detected the opto-electronic conversion chip of image converter section after the first polarizing coating and the second polarizing coating, and is converted to electric signal by the opto-electronic conversion chip of 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, image converter section also comprises the second transparent panel, and the second transparent panel is arranged on the outside of the second polarizing coating.
Further, the second polarizing coating is sticked on the transmitted light light incident side surface of optical lens.
Further, the second polarizing coating is sticked on the transmitted light emitting side surface of optical lens.
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, between the second polarizing coating place plane and the first polarizing coating place plane in angle of 45 degrees.
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.
Further, the angle between the polarization axle of the first polarizing coating and the polarization axle of the second polarizing coating is adjustable.
Application the technical solution of the utility model, contact type image pick-up unit comprises: 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.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.
Brief description of the drawings
The accompanying drawing that forms a part of the present utility model is used to provide further understanding of the present utility model, and schematic description and description of the present utility model is used for explaining the utility model, does not form improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 shows according to the structural representation of the first embodiment of the contact type image pick-up unit of embodiment of the present utility model;
Fig. 2 shows according to the structural representation of the second embodiment of the contact type image pick-up unit of embodiment of the present utility model;
Fig. 3 shows according to the structural representation of the third embodiment of the contact type image pick-up unit of embodiment of the present utility model;
Fig. 4 shows according to the structural representation of the 4th of the contact type image pick-up unit of embodiment of the present utility model the kind of embodiment;
Fig. 5 shows according to the structural representation of the 5th of the contact type image pick-up unit of embodiment of the present utility model the kind of embodiment;
Fig. 6 shows according to the structural representation of the 6th of the contact type image pick-up unit of embodiment of the present utility model the kind of embodiment;
Fig. 7 shows according to the structural representation of the 7th of the contact type image pick-up unit of embodiment of the present utility model the kind of embodiment;
Fig. 8 shows according to the structural representation of the transmitted light source portion of the 8th of the contact type image pick-up unit of embodiment of the present utility model the kind of embodiment;
Fig. 9 shows according to the structural representation of the transmitted light source portion of the 9th of the contact type image pick-up unit of embodiment of the present utility model the kind of embodiment;
Figure 10 shows according to the structural representation of the transmitted light source portion of the tenth of the contact type image pick-up unit of embodiment of the present utility model the kind of embodiment;
Figure 11 shows according to the structural representation of the transmitted light source portion of the 11 kind of embodiment of the contact type image pick-up unit of embodiment of the present utility model;
Figure 12 shows according to the structural representation of the 12 kind of embodiment of the contact type image pick-up unit of embodiment of the present utility model;
Figure 13 shows according to the structural representation of the 13 kind of embodiment of the contact type image pick-up unit of embodiment of the present utility model;
Figure 14 shows according to the structural representation of the 14 kind of embodiment of the contact type image pick-up unit of embodiment of the present utility model;
Figure 15 shows according to the structural representation of the 15 kind of embodiment of the contact type image pick-up unit of embodiment of the present utility model;
Figure 16 shows the image obtaining after contact type image pick-up unit of the prior art detects the bill that contains birefringent material;
The image that Figure 17 obtains after showing and according to contact type image pick-up unit of the present utility model, the bill that contains birefringent material being detected;
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 utility model 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 utility model 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 utility model 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 embodiment of the present utility model, 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, image converter section 20 comprises opto-electronic conversion chip; 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 the optical imagery of thing to be detected the opto-electronic conversion chip of image converter section 20 after the first polarizing coating 30 and the second polarizing coating 40, and be converted to electric signal by the opto-electronic conversion chip of 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.
Image converter section 20 comprises framework 21, optical lens 22, photoelectric commutator 23 and circuit board 24.Framework 21 forms the mounting structure of other each parts, and other parts all can be arranged in framework 21.The corresponding transmitted light source 11 of optical lens 22 is arranged in framework 21, for the transmitted light through thing to be detected is transferred to photoelectric commutator 23 places better; Photoelectric commutator 23 is arranged on the transmitted light emitting side of optical lens 22, and the optical signalling receiving is converted to electric signal; Circuit board 24 is arranged on the bottom of framework 21, and be electrically connected with photoelectric commutator 23, the electric signal of 23 conversions place of photoelectric commutator is processed to processing, make its image that is reduced to thing to be detected or Word message, then these images or Word message are outwards exported.This photoelectric commutator 23 is above-mentioned opto-electronic conversion chip.
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 utility model, 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 utility model 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 utility model, 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 utility model, 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 utility model, 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 utility model, 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 utility model, 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 utility model, 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 ensure 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 utility model, 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 utility model, 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 utility model 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 utility model, 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 utility model, 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 utility model, 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 utility model, 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 utility model, 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, 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.
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 having adopted the application's contact type image pick-up unit, 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 the contact type image pick-up unit that contains polarizing coating, 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 utility model the above embodiments 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 preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (17)
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), described image converter section (20) comprises opto-electronic conversion chip;
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 the optical imagery of described thing to be detected the opto-electronic conversion chip of described image converter section (20) after described the first polarizing coating (30) and the second polarizing coating (40), and is converted to electric signal by the opto-electronic conversion chip of 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 7, is characterized in that, described image converter section (20) also comprises the second transparent panel (25), and described the second transparent panel (25) is arranged on the outside of described the second polarizing coating (40).
9. 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).
10. 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 emitting side surface of described optical lens (22).
11. contact type image pick-up units 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).
12. contact type image pick-up units 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).
13. contact type image pick-up units according to claim 6, is characterized in that, between described the second polarizing coating (40) place plane and described the first polarizing coating (30) place plane in angle of 45 degrees.
14. 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.
15. 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.
16. 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.
17. contact type image pick-up units according to claim 1, is characterized in that, the angle between the polarization axle of described the first polarizing coating (30) and the polarization axle of described the second polarizing coating (40) is adjustable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420109085.2U CN203746144U (en) | 2014-03-11 | 2014-03-11 | Contact type image detection apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420109085.2U CN203746144U (en) | 2014-03-11 | 2014-03-11 | Contact type image detection apparatus |
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| Publication Number | Publication Date |
|---|---|
| CN203746144U true CN203746144U (en) | 2014-07-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420109085.2U Expired - Lifetime CN203746144U (en) | 2014-03-11 | 2014-03-11 | Contact type image detection apparatus |
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| CN (1) | CN203746144U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106355742A (en) * | 2016-08-26 | 2017-01-25 | 威海华菱光电股份有限公司 | +Transmission original reading device |
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2014
- 2014-03-11 CN CN201420109085.2U patent/CN203746144U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106355742A (en) * | 2016-08-26 | 2017-01-25 | 威海华菱光电股份有限公司 | +Transmission original reading device |
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