CN212484388U - OCR gathers and indicates fingerprint collection integration equipment more - Google Patents
OCR gathers and indicates fingerprint collection integration equipment more Download PDFInfo
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- CN212484388U CN212484388U CN202021335230.0U CN202021335230U CN212484388U CN 212484388 U CN212484388 U CN 212484388U CN 202021335230 U CN202021335230 U CN 202021335230U CN 212484388 U CN212484388 U CN 212484388U
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Abstract
The utility model relates to a OCR gathers and indicates fingerprint collection integration equipment more, including trapezoidal prism, first light source, second light source, first camera and second camera, first light source and first camera are used for gathering and indicate the fingerprint more, and second light source and second camera are used for gathering the certificate, and trapezoidal prism includes long limit top surface, minor face bottom surface and two side wainscots, and long limit top surface is the common collection face of indicating fingerprint and certificate more, and first camera and first light source set up the outside at two side wainscots respectively, the second camera sets up under the minor face bottom surface, the second light source sets up on the left side or the right of second camera. Because long limit top surface, minor face bottom surface are parallel to each other, and the second camera is laminated the minor face bottom surface as far as possible, and the certificate image of gathering receives the influence of light refraction very little, and the certificate image of gathering is more outstanding, and the position setting of first light source and first camera is unanimous with indicating fingerprint collection equipment more among the prior art, so the effect is also more outstanding.
Description
Technical Field
The utility model relates to an intelligent acquisition equipment technical field especially relates to an OCR gathers and indicates fingerprint collection integration equipment more.
Background
The OCR acquisition device, also called a document reader, scanner or passport reader, recognizer, etc., is generally shaped as a rectangular box as shown in fig. 1, and has a transparent glass plate 30 at the top for covering the document to be acquired with its acquisition side facing down, and a light source 50 and a camera 60 in the box below the glass plate 30 are connected to operate to photograph the acquisition side of the document. In order to reduce image distortion and control the volume, the optical path distance from the lens to the glass plate 30 is generally extended by means of mirror reflection, and after precise calculation and placement, the light source 50 for light supplement is not collected into the image, and only the light supplement effect is achieved on the collection surface (in the figure, the inside of the dotted line is the shooting range, and the light source 50 is outside the shooting range). In general, the principle of reflection rather than refraction of light is mainly relied on in OCR collecting devices, and therefore, not a prism but a glass plate is used in the device.
The multi-finger fingerprint collection device can realize simultaneous collection of multiple fingers by utilizing optical fingerprint collection, as shown in fig. 2, the optical fingerprint collection device is generally a rectangular box, a prism 40 is arranged above the optical fingerprint collection device, and the finger fingerprints can be collected by pressing the finger fingerprints downwards on the prism. Optical fingerprint collection mainly relies on the principle of total internal reflection of light when refracted by different media. When light enters the air from the glass, if the incident angle is larger than a certain critical angle, the refracted light will disappear and all the incident light will be reflected without entering the medium of low refractive index. The light source 50 is inside the box and light from the light source 50 is totally internally reflected as it passes through the collection surface at the upper portion of the prism 40 and exits through the other surface at the lower portion of the prism 40 into the camera 60. When a finger is pressed on the prism collecting surface, the fingerprint convex part is contacted with the prism collecting surface, the prism collecting surface of the contact part is scattered, the light can not be totally reflected, the brightness is obviously lower than that of the non-contact part, and therefore the optical image of the fingerprint is collected, so that the optical fingerprint collecting equipment most importantly utilizes the total internal reflection principle and uses a prism instead of a glass plate.
In some application occasions, need use the equipment that indicates fingerprint equipment more and OCR gathered the function simultaneously, these two kinds of collection equipment are because the imaging principle is different, and the light path part is contradictory even, so can not simply make up, directly realize gathering the dual function of indicating fingerprint and certificate with same kind of optics collection module, so can only install these two kinds of equipment respectively usually, equipment occupation space does not reduce, also can not obviously promote user's use experience, await the improvement.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an OCR collection that the integrated level is high, the volume reduces by a wide margin and indicate fingerprint collection integration equipment more.
The utility model discloses a realize like this: the utility model provides an OCR gathers and indicates fingerprint collection integration equipment more, includes trapezoidal prism, first light source, second light source, first camera and second camera, first light source and first camera are used for gathering and indicate the fingerprint more, second light source and second camera are used for gathering the certificate, trapezoidal prism includes long limit top surface, minor face bottom surface and two side wainscots, and long limit top surface is the common collection face of indicating fingerprint more and certificate, first camera and first light source set up the outside at two side wainscots respectively, the second camera sets up under the minor face bottom surface, the second light source sets up on the left side or the right of second camera, perhaps sets up two terminal surfaces around trapezoidal prism.
The trapezoidal prism is an isosceles trapezoid, and the base angle is 45-80 degrees.
Wherein the length of the bottom surface of the short side is less than 1/4 of the length of the top surface of the long side.
Wherein, the bottom surface of the short side is replaced by an inner concave cambered surface or an outer convex cambered surface.
The utility model has the advantages that: the OCR acquisition and multi-finger fingerprint acquisition integrated equipment replaces a common glass plate in the OCR acquisition equipment in the prior art with a trapezoidal prism, integrates the multi-finger fingerprint acquisition function, takes the top surface of the long edge of the trapezoidal prism as the common acquisition surface of multi-finger fingerprints and certificates, the second camera is arranged right below the bottom surface of the short side, the second light source is arranged on the left side or the right side of the second camera, because the long side top surface and the short side bottom surface are parallel to each other, the certificate can be regarded as a thicker glass plate, the second camera is attached to the short side bottom surface as much as possible, the collected certificate image is slightly influenced by light refraction, because the direction of the light after passing through the trapezoidal prism remains the same or is parallel to the direction of the light before entering the trapezoidal prism, therefore, the certificate image acquired by the design is excellent, and the design simultaneously overcomes the defect that the length of the traditional OCR acquisition equipment needs to be widened for avoiding light reflection; the first camera and the first light source are respectively arranged at the outer sides of the two side waist surfaces, and the position arrangement is basically consistent with that of multi-finger fingerprint acquisition equipment in the prior art, so that the image acquisition effect is basically consistent and is excellent; the utility model discloses a brand-new trapezoidal prism, rationally arrange the first light source, first camera, the position of second light source and second camera, factors such as refraction and total reflection when fully considering light business turn over trapezoidal prism, and gather respectively at suitable position and indicate this two kinds of images of fingerprint and certificate more, unite two into one two kinds of collection principles that seem contradiction, realized two kinds of collection equipment's high integration, and do not obviously increase the volume of equipment, occupation space is few, improve user's use experience by a wide margin.
Drawings
FIG. 1 is a schematic diagram of the optical path of a prior art OCR acquisition device;
FIG. 2 is a schematic diagram of the optical path of a multi-finger fingerprint acquisition device in the prior art;
FIG. 3 is a schematic structural diagram of a first embodiment of the integrated OCR acquisition and multi-finger fingerprint acquisition apparatus of the present invention;
FIG. 4 is an optical path diagram for OCR acquisition of the first embodiment of the integrated device for OCR acquisition and multi-finger fingerprint acquisition of the present invention;
FIG. 5 is a light path diagram for collecting multiple fingerprints according to the first embodiment of the OCR collection and multiple fingerprint collection integrated device
FIG. 6 is a schematic structural diagram of a second embodiment of the integrated OCR acquisition and multi-finger fingerprint acquisition apparatus of the present invention;
FIG. 7 is a schematic structural diagram of a third embodiment of the OCR acquisition and multi-finger fingerprint acquisition integrated device of the present invention;
fig. 8 is a schematic structural diagram of a fourth embodiment of the integrated OCR acquisition and multi-finger fingerprint acquisition apparatus of the present invention;
figure 9 is the utility model discloses a fourth stereogram of OCR collection and multi-finger fingerprint collection integration equipment embodiment.
1. A trapezoidal prism; 11. the top surface of the long side; 12. a short edge bottom surface; 13. a side waist surface; 2. a first light source; 3. a second light source; 4. a first camera; 5. a second camera; 10. a multi-finger fingerprint; 20. a certificate; 30. a glass plate; 40. a prism; 50. a light source; 60. a camera.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As an embodiment one of OCR collection and multi-finger fingerprint collection integrated equipment, as shown in fig. 3 to 5, including trapezoidal prism 1, first light source 2, second light source 3, first camera 4 and second camera 5, first light source 2 and first camera 4 are used for gathering multi-finger fingerprint 10, second light source 3 and second camera 5 are used for gathering certificate 20, trapezoidal prism 1 includes long edge top surface 11, short edge bottom surface 12 and two side waist surfaces 13, and long edge top surface 11 is the common face of gathering of multi-finger fingerprint 10 and certificate 20, first camera 4 and first light source 2 set up respectively in the outside of two side waist surfaces 13, second camera 5 sets up under short edge bottom surface 12, second light source 3 sets up on the right of second camera 5 (is equivalent with setting on the left side).
The OCR acquisition and multi-finger fingerprint acquisition integrated equipment replaces a common glass plate in the OCR acquisition equipment in the prior art with a trapezoidal prism, integrates the multi-finger fingerprint acquisition function, takes the long-edge top surface 11 of the trapezoidal prism 1 as a common acquisition surface of multi-finger fingerprints and certificates, the second camera 5 is disposed right below the short-side bottom face 12, the second light source 3 is disposed on the left or right of the second camera 5, because the long-side top surface 11 and the short-side bottom surface 12 are parallel to each other, the certificate can be regarded as a thicker glass plate, the second camera 5 is attached to the short-side bottom surface 12 as much as possible, the collected certificate image is slightly influenced by light refraction, since the direction of the light rays after passing through the trapezoidal prism 1 is constant or parallel to the direction of the light rays before entering the trapezoidal prism, therefore, the certificate image acquired by the design is excellent, and the design simultaneously overcomes the defect that the length of the traditional OCR acquisition equipment needs to be widened for avoiding light reflection; the first camera 4 and the first light source 2 are respectively arranged at the outer sides of the two side waist surfaces 13, and the position arrangement is basically consistent with that of multi-finger fingerprint acquisition equipment in the prior art, so that the image acquisition effect is basically consistent and is relatively excellent; the utility model discloses a brand-new trapezoidal prism 1, rational arrangement first light source 2, first camera 4, the position of second light source 3 and second camera 5, factors such as refraction and total reflection when fully considering light business turn over trapezoidal prism 1, and gather this two kinds of images of many finger fingerprints and certificate respectively in suitable position, unite two into one two kinds of collection principles that seem contradiction, two kinds of collection equipment's high integration has been realized, and the volume of not obviously increasing equipment, occupation space is few, improve user's use experience by a wide margin.
The certificate can also be said to be an image of an object above the device, and the multi-finger fingerprint can be said to be a convex image of the object which can be in close contact with the trapezoidal prism. And starting the corresponding camera to shoot according to the requirement of the actual acquisition service, and simultaneously starting the corresponding light source to acquire images. When one image is collected, the other group of cameras and the light source are turned off so as not to influence the collection effect.
In this embodiment, the trapezoidal prism 1 is an isosceles trapezoid, and the base angle is 45 degrees. In fact, the shape is not only the case, and the angle change is about 45-80 degrees, so that the positions of the first light source, the second light source, the first camera and the second camera can be properly adjusted to call out better image quality.
In this embodiment, the length of the short side bottom surface 12 is less than 1/4 of the length of the long side top surface 11. The shorter the short side bottom 12, the better, firstly, the collection of the multi-finger fingerprint cannot be influenced, and secondly, the second camera 5 can be ensured to collect the complete certificate image.
As an embodiment two of the OCR acquisition and multi-finger fingerprint acquisition integrated device of the present invention, as shown in fig. 6, it is different from the embodiment one in that the short-side bottom surface 12 is replaced with an inward concave surface. As a third embodiment of the OCR acquisition and multi-finger fingerprint acquisition integrated device of the present invention, as shown in fig. 7, the difference from the first embodiment is that the short-side bottom surface 12 is replaced by an outward convex arc surface. Because the shooting distance of second camera 5 is nearer, if use wide-angle lens, can appear "barrel-shaped distortion", also the fisheye effect of saying so usually, so need replace minor face bottom surface 12 for the cambered surface, rectify the image, reduce the image distortion, specifically set to indent cambered surface or evagination cambered surface to and set up the radian size of indent cambered surface, evagination cambered surface, still need carry out the adaptation according to the lectotype of second camera, just can reach best effect.
As the utility model discloses a fourth embodiment of OCR collection and multi-finger fingerprint collection integration equipment, as shown in fig. 8 and 9, the difference with the first embodiment lies in trapezoidal prism 1's base angle is 80 degrees, and the base angle is big more just can obtain big more the minor face bottom surface, increases the collection area. The second light sources 3 are arranged on the front end face and the rear end face of the trapezoidal prism 1, and can also play a good light compensation effect. At this time, it is better that the front and rear end surfaces of the trapezoidal prism 1 have a certain inclination, so that the light of the second light source 3 is incident into the trapezoidal prism 1 conveniently. (in embodiments one to three, the second light source may also be arranged in this way.)
The utility model discloses in, the glass face of light source position generally adopts the dull polish mode to increase the illumination degree of consistency, all should the dull polish except that minor face bottom surface, long and short limit bottom surface and camera shooting face even, prevents that light from influencing the image at the inside multiple reflection of trapezoidal prism.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (4)
1. The utility model provides an OCR gathers and indicates fingerprint collection integration equipment more, its characterized in that, includes trapezoidal prism, first light source, second light source, first camera and second camera, first light source and first camera are used for gathering the fingerprint that indicates more, second light source and second camera are used for gathering the certificate, trapezoidal prism includes long limit top surface, minor face bottom surface and two side waists, and long limit top surface is the face of gathering jointly of the fingerprint that indicates more and certificate, first camera and first light source set up respectively in the outside of two side waists, the second camera sets up under the minor face bottom surface, the second light source sets up on the left side or the right of second camera, perhaps sets up two terminal surfaces in trapezoidal prism's front and back.
2. An OCR acquisition and multi-finger fingerprint acquisition integrated device according to claim 1, wherein the trapezoidal prism is an isosceles trapezoid with a base angle of 45-80 degrees.
3. An OCR acquisition and multi-finger fingerprint acquisition integrated device according to claim 2, wherein the length of the bottom surface of the short side is less than 1/4 of the length of the top surface of the long side.
4. An OCR acquisition and multi-finger fingerprint acquisition integrated device according to claim 1, wherein the bottom surface of the short side is replaced by an inner concave arc surface or an outer convex arc surface.
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| CN202021335230.0U CN212484388U (en) | 2020-07-09 | 2020-07-09 | OCR gathers and indicates fingerprint collection integration equipment more |
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| CN202021335230.0U CN212484388U (en) | 2020-07-09 | 2020-07-09 | OCR gathers and indicates fingerprint collection integration equipment more |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111753808A (en) * | 2020-07-09 | 2020-10-09 | 盛视科技股份有限公司 | OCR gathers and indicates fingerprint collection integration equipment more |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111753808A (en) * | 2020-07-09 | 2020-10-09 | 盛视科技股份有限公司 | OCR gathers and indicates fingerprint collection integration equipment more |
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