CN216249337U - Identification module and palm biological information identification equipment - Google Patents
Identification module and palm biological information identification equipment Download PDFInfo
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- CN216249337U CN216249337U CN202122872115.8U CN202122872115U CN216249337U CN 216249337 U CN216249337 U CN 216249337U CN 202122872115 U CN202122872115 U CN 202122872115U CN 216249337 U CN216249337 U CN 216249337U
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Abstract
The utility model discloses an identification module and palm biological information identification equipment belongs to biological information identification field. The identification module comprises a shell, an identification module and an optical device; the shell wall of the shell is provided with a light inlet; the identification module and the optical device are both positioned in the shell, and the identification module and the optical device are spaced; the optical device is configured to convert a first optical signal input by the light inlet into a second optical signal so as to transmit the second optical signal to the identification module, wherein an included angle is formed between the first optical signal and the second optical signal. The present disclosure can realize close range identification of palm biological information at a low cost.
Description
Technical Field
The disclosure belongs to the field of biological information identification, and particularly relates to an identification module and palm biological information identification equipment.
Background
The identification module is a functional module for identifying biological information, is usually configured in biological information identification equipment, and has wide application in the field of quick payment.
In the related art, there is an identification module for identifying a palm print or a palm vein of a palm. When being used for placing the palm in the discernment region of discernment module, the light signal that user palm department reflection can be gathered to the camera in the discernment module to discernment user's palm print information or palm vein information. In order to allow a user to recognize a palm at a close distance (i.e., when the palm approaches the recognition module), a camera having a large angle of view is often disposed.
However, since the price of the camera having a large angle of view is high, it is not favorable for cost control of the recognition module.
SUMMERY OF THE UTILITY MODEL
The embodiment of the disclosure provides an identification module and palm biological information identification equipment, which can realize near-distance identification of palm biological information with lower cost. The technical scheme is as follows:
in a first aspect, an embodiment of the present disclosure provides an identification module, including a housing, an identification module, and an optical device;
the shell wall of the shell is provided with a light inlet;
the identification module and the optical device are both positioned in the shell, and the identification module and the optical device are spaced;
the optical device is configured to convert a first optical signal input by the light inlet into a second optical signal so as to transmit the second optical signal to the identification module, wherein an included angle is formed between the first optical signal and the second optical signal.
In one implementation of the present disclosure, the identification module is located on one side of an axis of the light inlet, and the optical device is located on the other side of the axis of the light inlet.
In another implementation of the present disclosure, the optical device is a mirror;
the reflector is connected with the wall of the shell and is positioned on the optical path of the first optical signal so as to convert the first optical signal into the second optical signal.
In yet another implementation of the present disclosure, the angle between the first optical signal and the normal of the mirror is 45 °.
In yet another implementation of the present disclosure, the optical device is a prism;
the prism is connected with the wall of the shell and is positioned on the optical path of the first optical signal so as to convert the first optical signal into the second optical signal.
In another implementation manner of the present disclosure, the prism is a total reflection prism, and the prism includes a first right-angle surface, a second right-angle surface and an inclined surface which are connected in sequence;
a first right-angle surface of the prism is close to the light inlet and is vertical to the first optical signal;
and a second right-angle surface of the prism is close to the identification module and is vertical to the second optical signal.
In yet another implementation of the present disclosure, the housing walls of the housing include first and second oppositely disposed housing walls;
the light inlet is located on the first shell wall, and the identification module is close to the second shell wall.
In yet another implementation of the present disclosure, the identification module includes at least one of a palm print identification unit and a palm vein identification unit.
In yet another implementation of the present disclosure, the light entrance has a light transmissive window therein;
the edge of the light-transmitting window is connected with the edge of the light inlet, and the light-transmitting window is perpendicular to the light path of the first optical signal.
In a second aspect, an embodiment of the present disclosure provides a palm biological information identification device, including a body and an identification module;
the identification module is the identification module described above, and the identification module is connected with the machine body.
The beneficial effects brought by the technical scheme provided by the embodiment of the disclosure at least comprise:
in the process of identifying the module work, first light signal is reflected by user's palm, and first light signal gets into the casing by going into the light mouth. The first optical signal after entering the shell is converted into a second optical signal under the action of the optical device, and the second optical signal is transmitted to the identification module, so that the palm biological information is collected and identified by the identification module.
Because under the effect of optical device, the first light signal has the contained angle with the second light signal between, so utilize the space in the casing equivalently, prolonged the light path between income light mouth to the identification module for identification module has obtained the expansion in the identification area outside going into the light mouth. That is, even when the large field angle recognition module does not need to be replaced, the recognition area can be enlarged, which is advantageous for cost control of the recognition module.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an identification module according to an embodiment of the present disclosure;
FIG. 2 is a schematic diagram illustrating comparison of identification regions provided by embodiments of the present disclosure;
fig. 3 is a schematic structural diagram of an identification module according to an embodiment of the disclosure;
fig. 4 is a schematic structural diagram of a palm biological information identification device provided in the embodiment of the present disclosure.
The symbols in the drawings represent the following meanings:
1. a housing;
11. a light inlet; 12. a first shell wall; 13. a second shell wall; 14. a light transmissive window;
2. an identification module;
3. an optical device;
31. a first right-angle face; 32. a second right-angle surface; 33. a bevel;
100. a first optical signal; 200. a second optical signal;
1000. a body; 2000. and an identification module.
Detailed Description
To make the objects, technical solutions and advantages of the present disclosure more apparent, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.
The identification module is a functional module for identifying biological information, is usually configured in biological information identification equipment, and has wide application in the field of quick payment.
In the related art, there is an identification module for identifying a palm print or a palm vein of a palm. The recognition module comprises a shell and a recognition module, the recognition module is right opposite to a light inlet on the shell, and light signals reflected by the palm are collected through the light inlet, so that the biological information of the palm is recognized. When discerning, the user places the palm in the discernment region of discernment module, and the light signal that user palm department reflection can be gathered to the camera in the discernment module to discernment user's palm print information or palm vein information.
In practical operation, users often use to bring palms close to the recognition module, and thus, the recognition module is required to have a larger recognition area in a short distance. In order to meet this requirement, a camera having a large angle of view is generally arranged.
However, since the price of the camera having a large angle of view is high, it is not favorable for cost control of the recognition module.
In order to solve the above technical problem, an embodiment of the present disclosure provides an identification module, fig. 1 is a schematic structural diagram of the identification module, and referring to fig. 1, the identification module includes a housing 1, an identification module 2, and an optical device 3.
The shell wall of the shell 1 is provided with a light inlet 11, the identification module 2 and the optical device 3 are both positioned in the shell 1, and the identification module 2 and the optical device 3 are spaced apart.
The optical device 3 is configured to convert the first optical signal 100 input from the light inlet 11 into the second optical signal 200, so that the second optical signal 200 is transmitted to the identification module 2, and an included angle is formed between the first optical signal 100 and the second optical signal 200.
The first optical signal 100 is an optical signal reflected by the palm under the action of other light sources, and the second optical signal 200 is an optical signal obtained by converting the first optical signal 100 through the optical device 3.
In the process of operating the identification module, the palm of the user reflects the first optical signal 100, and the first optical signal 100 enters the housing 1 through the light inlet 11. The first optical signal 100 entering the housing 1 is converted into a second optical signal 200 under the action of the optical device 3, and the second optical signal 200 is transmitted to the identification module 2, so that the palm biological information is collected and identified by the identification module 2.
Due to the included angle between the first optical signal 100 and the second optical signal 200 under the action of the optical device 3, the optical path from the light inlet 11 to the identification module 2 is extended by using the space in the housing 1, so that the identification area of the identification module 2 outside the light inlet 11 is enlarged. That is, even when the large field angle recognition module 2 does not need to be replaced, the recognition area can be enlarged, which is advantageous for cost control of the recognition module.
Fig. 2 is a schematic diagram illustrating comparison of recognition areas, and with reference to fig. 2, the recognition modules 2 of the embodiment of the disclosure have the same field angle α as those of the recognition modules 2 of the related art. In order to obtain the recognition regions with the same area, the recognition module in the related art needs to have a palm distance from the light inlet L1In the embodiment of the present disclosure, the recognition module only needs to be away from the light entrance L by the palm2，L2＜L1Thereby being beneficial to the user to recognize the palm biological information in a short distance.
Because the light path between the light inlet 11 and the recognition module 2 is only prolonged, and the field angle is not increased, the image collected by the recognition module 2 does not generate large-view-angle distortion, and the intervention and debugging of a correction algorithm are not needed. In addition, the pixel proportion of the palm in the identification area is not too low, and the waste of the pixels in the identification area is avoided.
As can be seen from the foregoing, the embodiments of the present disclosure can improve the recognition area without changing the angle of view. The key point is that the internal space of the housing 1 can be fully utilized by the conversion of the first optical signal 100 by the optical device 3, so that the optical path from the light inlet 11 to the identification module 2 is prolonged. For this purpose, the identification module is further described below.
With continued reference to fig. 1, in the present embodiment, the identification module 2 is located on one side of the axis of the light inlet 11, and the optical device 3 is located on the other side of the axis of the light inlet 11.
The optical path of the second optical signal 200 is provided between the identification module 2 and the optical device 3, and the distance between the identification module 2 and the optical device 3 can largely determine the optical path length of the second optical signal 200. Therefore, the identification module 2 and the optical device 3 are arranged on two sides of the axis of the light inlet 11, so that the distance between the identification module 2 and the optical device 3 can be effectively ensured, the transverse internal space of the shell 1 can be fully utilized, and the light path of the second optical signal 200 can be further prolonged.
In this embodiment, the housing wall of the housing 1 includes a first housing wall 12 and a second housing wall 13 arranged oppositely, the light inlet 11 is located on the first housing wall 12, and the identification module 2 is close to the second housing wall 13.
The optical path of the first optical signal 100 is provided between the light entrance 11 and the optical device 3, and the distance between the light entrance 11 and the optical device 3 can largely determine the optical path length of the first optical signal 100. Therefore, the light inlet 11 and the optical device 3 are respectively arranged on the first shell wall 12 and the second shell wall 13 which are opposite to each other, so that the distance between the light inlet 11 and the optical device 3 can be effectively ensured, thereby being beneficial to fully utilizing the longitudinal internal space of the shell 1 and further prolonging the optical path of the first optical signal 100.
In the present embodiment, the optical device 3 is used to convert the first optical signal 100 into the second optical signal 200, and actually changes the transmission direction of the first optical signal 100. Optionally, the transmission direction of the first optical signal 100 is changed by reflection or refraction to convert the first optical signal 100 into the second optical signal 200.
In a first variation, with continued reference to fig. 1, the optical device 3 is a mirror in this embodiment. A mirror is connected to a wall of the housing 1 and is positioned in an optical path of the first optical signal 100 to convert the first optical signal 100 into the second optical signal 200.
In the above implementation, according to the law of reflection of light, after entering the housing 1 from the light inlet 11, the first optical signal 100 is transmitted to the reflector, and under the action of the reflector, the transmission direction of the first optical signal 100 is changed, i.e. is reflected to be the second optical signal 200, and the second optical signal 200 is transmitted to the identification module 2.
Optionally, the angle between the first optical signal 100 and the normal of the mirror is 45 °. By such design, the included angle between the first optical signal 100 and the second optical signal 200 is 90 °, which can ensure the full utilization of the internal space of the housing 1 in the horizontal direction and the vertical direction.
Illustratively, the transmission direction of the first optical signal 100 is a vertical direction perpendicular to a horizontal plane, and the transmission direction of the second optical signal 200 is a horizontal direction parallel to the horizontal plane. Because the light cone sectional area of second optical signal is less than the light cone sectional area of first optical signal, so with the transmission direction of second optical signal 200 and be on a parallel with the horizontal plane design, can effectual reduction casing 1 thickness in the vertical direction, be favorable to the miniaturized design of discernment module.
Second transformation, referring to fig. 3, in the present embodiment, the optical device 3 is a prism. A prism is connected to the wall of the housing 1 and is positioned in the optical path of the first optical signal 100 to convert the first optical signal 100 into the second optical signal 200.
In the above implementation, after entering the housing 1 through the light inlet 11, the first optical signal 100 is transmitted to the prism, and under the action of the prism, the transmission direction of the first optical signal 100 is changed, that is, converted into the second optical signal 200, and the second optical signal 200 is transmitted to the identification module 2.
Optionally, the prism is a total reflection prism, and the prism includes a first right-angle surface 31, a second right-angle surface 32 and an inclined surface 33 which are connected in sequence. The first right-angle surface 31 of the prism is close to the light inlet 11 and perpendicular to the first optical signal 100, and the second right-angle surface 32 of the prism is close to the identification module 2 and perpendicular to the second optical signal 200.
According to the law of refraction of light, after the first optical signal 100 is transmitted to the prism, the first right-angle surface 31 couples into the prism, and in the process, the transmission direction of the first optical signal 100 is not changed. After the first optical signal 100 is transmitted to the inclined plane 33, according to the reflection law of light, the transmission direction of the first optical signal 100 is changed, i.e. is reflected to be the second optical signal 200, and the second optical signal 200 is output by the second right-angle surface 32 (without changing the transmission direction) and transmitted to the identification module 2.
In the second conversion mode, the second optical signal 200 can also be horizontally arranged, and the first optical signal 100 is vertically arranged, so that the thickness of the housing 1 in the vertical direction is reduced, and the miniaturization design of the identification module is facilitated.
Therefore, both of the above-mentioned two conversion manners can achieve the effect of changing the transmission direction of the first optical signal 100, so as to convert the first optical signal 100 into the second optical signal 200. Therefore, the two conversion modes can be selected according to actual requirements, and the disclosure does not limit the two conversion modes.
Due to the identification component provided by the embodiment of the disclosure, the user can be identified in a close range. In order to provide protection for the identification module 2 inside the housing 1, optionally a light-transmissive window 14 is provided in the light inlet 11. The edge of the light-transmitting window 14 is connected to the edge of the light inlet 11, and the light-transmitting window 14 is perpendicular to the optical path of the first optical signal 100.
Since the light transmissive window 14 is perpendicular to the optical path of the first optical signal 100, the transmission direction of the first optical signal 100 does not change during transmission through the light transmissive window 14 according to the reflection law of light.
The optical device 3 has been described above and the identification module 2 is described below.
In the present embodiment, the identification module 2 includes at least one of a palm print identification unit and a palm vein identification unit.
In the above implementation manner, the palm print recognition unit is configured to recognize palm print information of the palm, the palm vein recognition unit is configured to recognize palm vein information of the palm, and the palm print information and the palm vein information both belong to palm biological information. The palm print information can be shot and collected by an RGB (Red, Green and Blue) camera, and the palm vein information can be shot and collected by an infrared camera. In addition, in order to improve the collection quality, the identification module 2 further comprises an infrared light emitting diode lamp set and a visible light emitting diode lamp set which are formed by a single wave band or multiple wave bands. The infrared light-emitting diode lamp group and the visible light-emitting diode lamp group are used for assisting the RGB camera and the infrared camera to shoot.
It is easy to understand that the identification area refers to the shooting range in which the RGB camera and the infrared camera can acquire accurate palm biological information. When the palm is located the identification area, accurate palm biological information can be gathered in the shooting of RGB camera and infrared camera.
Optionally, the recognition module 2 further comprises a distance sensor for sensing the palm. When the palm is sensed, the recognition module 2 starts to collect the palm biological information. When the palm is not sensed, the recognition module 2 does not collect the palm biological information.
Fig. 4 is a schematic structural diagram of a palm biological information identification device according to an embodiment of the disclosure, and with reference to fig. 4, in this embodiment, the palm biological information identification device includes a body 1000 and an identification module 2000, where the identification module 2000 is the identification module shown in fig. 1 and 3, and the identification module 2000 is connected to the body 1000.
In the above implementation, the palm biological information recognition device can recognize the palm print information and the palm vein information by the recognition module 2000. Since the palm biological information identification device comprises the identification module shown in fig. 1 and 3, the palm biological information identification device has all the beneficial effects of the identification module shown in fig. 1 and 3, and the description is omitted.
The above description is intended to be exemplary only and not to limit the present disclosure, and any modification, equivalent replacement, or improvement made without departing from the spirit and scope of the present disclosure is to be considered as the same as the present disclosure.
Claims (10)
1. An identification module, characterized by comprising a housing (1), an identification module (2) and an optical device (3);
the shell wall of the shell (1) is provided with a light inlet (11);
the identification module (2) and the optical device (3) are both located in the housing (1), and the identification module (2) and the optical device (3) are spaced apart;
the optical device (3) is configured to convert a first optical signal (100) input by the light inlet (11) into a second optical signal (200) so that the second optical signal (200) is transmitted to the identification module (2), wherein an included angle is formed between the first optical signal (100) and the second optical signal (200).
2. An identification module according to claim 1, characterized in that the identification module (2) is located on one side of the axis of the light inlet (11) and the optics (3) is located on the other side of the axis of the light inlet (11).
3. An identification module according to claim 1 or 2, characterized in that the optical device (3) is a mirror;
the mirror is connected to a wall of the housing (1) and is positioned in an optical path of the first optical signal (100) to convert the first optical signal (100) into the second optical signal (200).
4. An identification module according to claim 3, characterized in that the angle between the first light signal (100) and the normal of the mirror is 45 °.
5. An identification module according to claim 1 or 2, characterized in that the optical device (3) is a prism;
the prism is connected to a wall of the housing (1) and is positioned in an optical path of the first optical signal (100) to convert the first optical signal (100) into the second optical signal (200).
6. An identification module according to claim 5, characterized in that said prism is a total reflection prism, said prism comprising a first right-angled surface (31), a second right-angled surface (32) and an inclined surface (33) connected in series;
a first right-angle surface (31) of the prism is close to the light inlet (11) and is vertical to the first optical signal (100);
the second right-angle surface (32) of the prism is close to the identification module (2) and is perpendicular to the second optical signal (200).
7. An identification module according to claim 1 or 2, characterized in that the walls of the housing (1) comprise a first wall (12) and a second wall (13) arranged opposite each other;
the light inlet (11) is located in the first housing wall (12), and the identification module (2) is located close to the second housing wall (13).
8. An identification module according to claim 1 or 2, characterized in that the identification module (2) comprises at least one of a palm print identification unit and a palm vein identification unit.
9. An identification module according to claim 1 or 2, characterized in that the light inlet (11) has a light-transmissive window (14) therein;
the edge of the light-transmitting window (14) is connected with the edge of the light inlet (11), and the light-transmitting window (14) is perpendicular to the light path of the first optical signal (100).
10. A palm biological information identification device is characterized by comprising a machine body (1000) and an identification module (2000);
the identification module (2000) is according to any of claims 1 to 9, the identification module (2000) being connected to the machine body (1000).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122872115.8U CN216249337U (en) | 2021-11-22 | 2021-11-22 | Identification module and palm biological information identification equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122872115.8U CN216249337U (en) | 2021-11-22 | 2021-11-22 | Identification module and palm biological information identification equipment |
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| Publication Number | Publication Date |
|---|---|
| CN216249337U true CN216249337U (en) | 2022-04-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122872115.8U Active CN216249337U (en) | 2021-11-22 | 2021-11-22 | Identification module and palm biological information identification equipment |
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| CN (1) | CN216249337U (en) |
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- 2021-11-22 CN CN202122872115.8U patent/CN216249337U/en active Active
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