CN214795945U - Iris camera module and terminal equipment - Google Patents
Iris camera module and terminal equipment Download PDFInfo
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- CN214795945U CN214795945U CN202120623751.4U CN202120623751U CN214795945U CN 214795945 U CN214795945 U CN 214795945U CN 202120623751 U CN202120623751 U CN 202120623751U CN 214795945 U CN214795945 U CN 214795945U
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Abstract
The utility model discloses an iris module and terminal equipment of making a video recording. The iris camera module comprises a base, a first lens, a second lens, a photosensitive chip, a shutter and a circuit board. The first lens and the second lens are arranged on the base side by side, optical axes of the first lens and the second lens are parallel, and the circuit board is fixed on the base. The photosensitive chip is positioned at one end of the first lens and one end of the second lens and is electrically connected with the circuit board. The shutter comprises two shielding parts which can be opened and closed, and the two shielding parts are respectively arranged at the object sides of the first lens and the second lens along the optical axis direction. When the shielding part at the object side of the first lens is opened, the photosensitive chip acquires the face information through the first lens. When the shielding part at the object side of the second lens is opened, the photosensitive chip acquires iris information through the second lens. In order to solve prior art, need to set up two cameras for acquireing iris information and be used for shooing the face image respectively and gather iris information, and cause the problem of the complicated and the wasting of resources of module structure of making a video recording.
Description
Technical Field
The utility model relates to a technical field that makes a video recording especially relates to an iris module and terminal equipment of making a video recording.
Background
Among the current biometric identification technologies, the iris identification technology is one of the technologies with the highest accuracy and the best anti-counterfeiting performance. In order to acquire iris information, it is generally necessary to capture a face image and then acquire iris information from the captured face image. However, since the diameter of the iris is very small and the acquired iris information requires enough pixels, a high-resolution photosensitive chip is required to quickly acquire the iris information. Among the prior art, need set up a ordinary camera and a high resolution camera usually, shoot the face image through ordinary camera, then gather iris information through high resolution camera, this makes the structure of the module of making a video recording complicated, still can cause cost increase and wasting of resources simultaneously.
SUMMERY OF THE UTILITY MODEL
The utility model provides an iris module and terminal equipment of making a video recording to among the solution prior art, need set up two cameras and be used for shooting facial image respectively and gather iris information for acquireing iris information, and cause the problem of the complication and the wasting of resources of module structure of making a video recording.
For solving the above problem, the utility model provides an iris camera module, including first camera lens, second camera lens, sensitization chip, shutter and circuit board. The first lens and the second lens are arranged on the base side by side, optical axes of the first lens and the second lens are parallel, and the circuit board is fixed on the base. The photosensitive chip is located at one end of the first lens and one end of the second lens and is electrically connected with the circuit board. The shutter is located at one end, back to the photosensitive chip, of the first lens and the second lens and electrically connected with the circuit board. The shutter comprises two shielding parts which can be opened and closed, and the two shielding parts are respectively arranged at the object sides of the first lens and the second lens along the optical axis direction. When the shielding part at the object side of the first lens is opened, the photosensitive chip acquires face information through the first lens, and the circuit board is used for receiving the face information so as to realize the recognition of the face information and the acquisition of the position information of human eyes. When the shielding part at the object side of the second lens is opened, the photosensitive chip acquires iris information through the second lens according to the position information of the human eyes.
In this embodiment, first camera lens with a sensitization chip is shared to the second camera lens, face information with iris information all passes through sensitization chip acquires, plays the simplification the effect of iris module structure of making a video recording, can practice thrift the cost simultaneously.
In a possible implementation manner, the iris image capturing module includes a controller, the controller is electrically connected to the circuit board, the controller is configured to send a control signal, and the circuit board is configured to receive the control signal, so that the two shielding portions are opened or closed. In this embodiment, the controller controls the shielding portion to shield the first lens and the second lens, so that the mutual interference between the processes of the photosensitive chip obtaining the face information through the first lens and the processes of the photosensitive chip obtaining the iris information through the second lens can be avoided.
In a possible implementation manner, the terminal device further includes a controller, the controller is electrically connected to the circuit board, the controller is configured to send a control signal, and the circuit board is configured to receive the control signal, so that the two shielding portions are opened or closed.
In one possible embodiment, the field angle of the first lens is wider than the field angle of the second lens. The first lens with the wide visual angle can enlarge the range of the image shot by the first lens so as to completely shoot the human face into a picture. The second lens with a narrow field angle can increase the ratio of the iris in the picture acquired by the second lens, thereby accelerating the acquisition speed of the iris information.
In a possible implementation manner, the first lens includes a first folding element and a first lens, the first folding element is disposed between the first lens and the photosensitive chip, and when the photosensitive chip obtains the face information, light passes through the first lens and then passes through the first folding element and is projected onto the photosensitive chip to form the face image. The second lens comprises a second lens and a second folding element, the second folding element is arranged between the second lens and the photosensitive chip, and when the photosensitive chip acquires iris information, light rays pass through the second lens and then pass through the second folding element and are projected onto the photosensitive chip to form the iris information.
In one possible embodiment, the first folding element is a prism or a plane mirror, and the second folding element is a prism or a plane mirror.
In one possible embodiment, the second lens is a zoom lens. And a zoom lens is adopted as a second lens, and the second lens can automatically adjust the focal length according to the distance between the face and the second lens, so that the iris in the picture acquired by the second lens is large enough to obtain the iris information meeting the requirement.
The utility model also provides a terminal equipment, including body and the arbitrary embodiment of the aforesaid iris module of making a video recording. The body comprises a shell, and the iris camera module is contained in the shell. The terminal equipment further comprises a memory, the memory is used for storing preset iris information, the terminal equipment further comprises a controller, the controller is used for reading the preset iris information and target iris information obtained by the iris camera module, and the controller is further used for comparing the preset iris information with the target iris information and outputting a recognition result.
In one possible implementation manner, the memory is configured to store a plurality of pieces of preset iris information, each piece of preset iris information corresponds to one piece of character information, the controller is configured to compare whether the target iris information matches with the preset iris information, and when the target iris information matches with any one piece of preset iris information, the terminal device outputs character information corresponding to the preset iris information.
In a possible implementation manner, the controller is configured to compare whether the target iris information matches the preset iris information, and when the target iris information matches the preset iris information, the controller sends an unlocking control instruction, and the terminal device unlocks.
To sum up, the utility model discloses a sensitization chip of first camera lens and second camera lens sharing, face information with iris information all passes through sensitization chip acquires, plays the simplification the iris makes a video recording module structure and the effect of practicing thrift the cost. Meanwhile, when the photosensitive chip acquires the iris information through the second lens, the photosensitive chip can be focused to the position of eyes, and only the iris in the picture is identified and acquired, so that the iris camera module can obtain the iris information with enough resolution by using the photosensitive chip with lower resolution, the requirement on the photosensitive chip is reduced, and the resource is saved.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings required for the embodiments will be briefly described below, and obviously, the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic plane structure diagram of an iris camera module provided by the present invention;
fig. 2 is a schematic plan view of one of the operating states of the iris imaging module shown in fig. 1;
fig. 3 is a schematic plan view of one of the operating states of the iris imaging module shown in fig. 1;
fig. 4 is a flowchart of a process of acquiring iris information by the iris imaging module shown in fig. 1.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1-3, the present invention provides an iris imaging module 100, including a base 1, a first lens 10, a second lens 20, a photosensitive chip 30, a shutter 40 and a circuit board 50, wherein the first lens 10 and the second lens 20 are disposed side by side on the base 1 and have parallel optical axes, the circuit board 50 is fixed on the base 1, the photosensitive chip 30 is disposed at one end of the first lens 10 and the second lens 20 and electrically connected to the circuit board 50, and the shutter 40 is disposed at one end of the first lens 10 and the second lens 20 opposite to the photosensitive chip 30 and electrically connected to the circuit board 50. The shutter 40 includes two openable and closable blocking portions, and the two blocking portions are respectively disposed at the object sides of the first lens and the second lens along the optical axis direction. When the shielding part on the object side of the first lens 10 is opened, the photosensitive chip 30 acquires face information through the first lens 10, and the circuit board 50 is configured to receive the face information, so as to recognize the face information and acquire eye position information; when the shielding portion on the object side of the second lens 20 is opened, the light sensing chip 30 obtains iris information through the second lens 20 according to the position information of the human eyes.
In this embodiment, the iris information acquisition process is divided into two steps by providing two lenses, namely, a first lens 10 and a second lens 20; firstly, the shielding part on the object side of the first lens 10 is opened, the shielding part on the object side of the second lens 20 is closed, and the photosensitive chip 30 acquires face information through the first lens 10 and transmits the face information to the circuit board 50; then, the circuit board 50 receives the face information to realize the recognition of the face to obtain the eye position information; then, the shielding portion on the object side of the second lens 20 is opened, the shielding portion on the object side of the first lens 10 is closed, and the light sensing chip 30 obtains the iris information through the second lens 20 according to the position information of the human eyes. In this embodiment, the first lens 10 and the second lens 20 share one photosensitive chip 30, and the face information and the iris information are both obtained through the photosensitive chip 30, so as to simplify the structure of the iris camera module 100, and save the cost.
In this embodiment, when the photosensitive chip 30 acquires the iris information through the second lens 20, the photosensitive chip can focus on the position of the human eye, and only the iris in the picture is recognized and acquired, so that the iris image capturing module 100 can obtain the iris information with sufficient resolution by using the photosensitive chip 30 with lower resolution. This not only reduces the requirements for the photosensitive chip 30, but also serves to save resources. Meanwhile, the photosensitive chip 30 only needs to recognize the iris information in the visual field of the second lens 20, and does not need to recognize other information except the iris in the visual field too much, so that the iris information can be acquired more accurately, and the speed of acquiring the iris information can be increased.
Specifically, the shielding portions are a first shielding portion 41 and a second shielding portion 42, respectively, where the first shielding portion 41 is located at the object side of the first lens 10, and the second shielding portion 42 is located at the object side of the second lens 20. When the iris image pickup module does not work, the first shielding part 41 and the second shielding part 42 are both in a closed state, the first shielding part 41 shields the first lens 10, and the second shielding part 42 shields the second lens 20. In this embodiment, the first shielding portion 41 and the second shielding portion 42 are of a split structure, and the opening and closing of the first shielding portion 41 and the second shielding portion 42 do not affect each other. In other embodiments, the first shielding portion 41 and the second shielding portion 42 may also be an integral structure to simplify the structure of the shutter 40.
Specifically, the first turning element 11 is a prism or a plane mirror, and the second turning element 21 is a prism or a plane mirror. In this embodiment, the first folding element 11 and the second folding element 21 are both prisms.
With reference to fig. 1 to fig. 3, the iris image capturing module further includes a controller electrically connected to the circuit board 50, the controller is configured to send a control signal, and the circuit board 50 is configured to receive the control signal, so as to open or close the two shielding portions. The controller controls the first shielding portion 41 to be closed to shield the first lens 10, and also controls the second shielding portion 42 to be closed to shield the second lens 20. In this embodiment, the controller controls the first shielding part 41 and the second shielding part 42 to open and close, and when the first shielding part 41 is opened and the first lens 10 obtains face information, the second shielding part 42 is closed to shield the second lens 20; when the second shielding portion 42 is opened and the second lens 20 acquires the iris information, the first shielding portion 41 is closed to shield the first lens 10, so that the two processes of acquiring the face information by the first lens 10 and acquiring the iris information by the second lens 20 can be prevented from interfering with each other.
Specifically, as shown in fig. 2, when the photosensitive chip 30 obtains the face information through the first lens 10, the controller controls the first shielding portion 41 to be opened, and controls the second shielding portion 42 to be closed to shield the second lens 20. When the photosensitive chip 30 acquires the face information through the first lens 10, the second lens 20 is prevented from interfering with the first lens. As shown in fig. 3, when the light sensing chip 30 acquires the iris information through the second lens 20, the controller controls the second shielding portion 42 to be opened, and controls the first shielding portion 41 to be closed to shield the first lens 10, so as to prevent the first lens 10 from interfering when the light sensing chip 30 acquires the iris information through the second lens 20.
In this embodiment, the shutter 40 is disposed at a distance from the first lens 10 and the second lens 20, that is, the shutter 40 is disposed at one end of the first lens surface 12 and the second lens surface 22 away from the first folding element 11 and the second folding element 21. The process of opening and closing the shielding portion of the shutter 40 is performed outside the first lens 10 and the second lens 20, so that the shielding portion is prevented from moving to cause dust to enter the first lens 10 and the second lens 20, thereby affecting the sharpness of the images captured by the first lens 10 and the second lens 20.
In another embodiment of the present application, unlike the previous embodiment, the electronic device includes a controller. The controller is electrically connected to the circuit board 50, the controller is configured to send a control signal, and the circuit board 50 is configured to receive the control signal, so that the first shielding portion 41 and the second shielding portion 42 are opened or closed. The controller controls the first shielding part 41 to be closed to shield the first lens 10. The controller controls the second shielding part 42 to be closed to shield the second lens 20. In this embodiment, the controller is disposed in the electronic device to simplify the structure of the iris imaging module 100.
In one embodiment, the controller of the electronic device is disposed on a main board of the electronic device, and the controller of the electronic device sends a control signal, and transmits the control signal to the circuit board 50 of the iris image capturing module, and the control signal is transmitted to the shutter 40 by the circuit board, so as to control the first shielding portion 41 and the second shielding portion 42.
In another embodiment, the controller of the electronic device is disposed on a main board of the electronic device, and the circuit board 50 is disposed with a processor and a second controller. The controller of the electronic device sends out a control signal and transmits the control signal to the processor, the processor processes the control signal and transmits the control signal to the second controller, and the second controller controls the first shielding part 41 and the second shielding part 42 to be opened and closed.
Furthermore, the iris camera module further comprises an identification module, the identification module can be integrated with the controller, and the identification module can also be an independent module. When the identification module is an individual module, the identification module is electrically connected with the circuit board or the controller. In this embodiment, the identification module is disposed on the controller and integrated with the controller. The photosensitive chip 30 obtains the face information through the first lens and then transmits the face information to the recognition module, and the recognition module recognizes the face information and obtains the position information of human eyes.
Referring to fig. 2 and 3, the field angle of the first lens 10 is wider than that of the second lens 20. The first lens 10 with a wide field angle may enlarge a range of an image photographed by the first lens 10 to completely photograph the human face into a picture. The second lens 20 with a narrow field angle can increase the ratio of the iris in the picture acquired by the second lens 20, thereby speeding up the acquisition speed of the iris information.
Further, the second lens 20 is a zoom lens. The different distances between the human face and the second lens 20 cause different proportions of the iris in the visual field of the second lens 20. When the human eye is far away from the second lens 20, the iris occupies a smaller proportion of the field of view of the second lens 20, so that the iris image acquired by the second lens 20 is smaller. In this embodiment, a zoom lens is used as the second lens 20, and the second lens 20 can automatically adjust the focal length according to the distance between the face and the second lens 20, so that the iris in the picture acquired by the second lens 20 is large enough to obtain the iris information meeting the requirement.
Optionally, the first lens 10 is a wide-angle lens, so that the range of the image captured by the first lens 10 can be enlarged. When the face is far away from the camera module, the first lens 10 can still shoot the face into the picture completely.
Specifically, the controller determines the distance of the user according to the face information, and controls the second lens 20 to automatically zoom through the determination structure. In the embodiment, the distance of the user is judged according to the size of the face, and when the user is at a longer distance, the long focal length is adjusted. When the user is at close range, the focus is adjusted to a short distance. This ensures that the iris in the picture taken by the second lens 20 is large enough to ensure that satisfactory iris information is obtained, whether the user is far or near. In this embodiment, the second lens 20 has an auto-focusing function at the same time to ensure that clear iris information can be obtained.
Further, the photosensitive chip 30 is an image sensor. Specifically, the image sensor uses a photoelectric element as a detection element, and can convert an optical signal into an electrical signal. The image sensor can be a CCD sensor or a CMOS sensor. In this embodiment, the photosensitive chip 30 is a CCD image sensor. The first lens 10 and the second lens 20 share one photosensitive chip 30, so that the manufacturing cost of the iris image pickup module 100 and the use cost of a user are reduced.
Referring to fig. 4, in the present invention, the iris image capturing module 100 obtains iris information of human eyes as follows:
s1: the first shielding part is opened, and the second shielding part is closed;
s2: the photosensitive chip acquires face information through the first lens;
s3: the circuit board acquires face information, identifies the face information and acquires eye position information;
s4: the first shielding part is closed, and the second shielding part is opened;
s5: and the photosensitive chip acquires iris information through the second lens according to the position information of the human eyes.
Specifically, referring to fig. 1 and 2, in S1, the controller sends a control signal, and transmits the control signal to the shutter 40 through the circuit board 50, so that the first shielding portion 41 is opened to operate the first lens 10, and the second shielding portion 41 is closed to shield the second lens 20.
In S2, the first lens 10 works, the first lens 10 receives the face information located on the front side of the iris imaging module 100 and projects the face information onto the photosensitive chip 30, and the photosensitive chip transmits the face information to the circuit board 50.
Specifically, an identification module is arranged on the circuit board 50, in S3, the circuit board 50 receives the face information and transmits the face information to the identification module, and the identification module receives the face information and then identifies the face image to obtain eye position information and transmits the eye position information to the circuit board.
In S4, referring to fig. 1 and 3, the controller further sends a control signal, and transmits the control signal to the shutter through the circuit board 50, so that the first shielding portion 41 is closed to shield the first lens 10, and the second shielding portion 42 is opened to operate the second lens 20.
In S5, the photosensitive chip 30 obtains the eye position information transmitted by the circuit board, and obtains the iris information through the second lens 20 according to the eye position information.
In this embodiment, the iris imaging module 100 obtains the face information through the first lens 10, and the second lens 20 obtains the iris information according to the face information obtained by the first lens 10, so that the second lens 20 can focus on the eyes when obtaining the iris information, and only identifies and obtains the iris in the picture, thereby reducing the requirement for the resolution of the light sensing chip. Meanwhile, the first lens 10 and the second lens 20 share one photosensitive chip, which plays a role in simplifying the iris image pickup module.
The utility model provides a terminal equipment (not shown), terminal equipment includes body and any one of the above-mentioned embodiment the iris module of making a video recording, the body includes the casing, the iris module of making a video recording accept in the casing, terminal equipment still includes the memory, the memory is used for storing and predetermines iris information, terminal equipment still includes the controller, the controller is used for reading predetermine iris information and the target iris information that the iris module of making a video recording obtained, the controller still is used for comparing predetermine iris information with target iris information to output the identification result. Specifically, the terminal device may be a mobile phone, a computer, a watch, or the like, or may be an intelligent door lock, an attendance machine, or the like.
In one embodiment, the controller is configured to compare whether the target iris information matches the preset iris information, and when the target iris information matches the preset iris information, the controller sends an unlocking control instruction, so that the terminal device unlocks. In this embodiment, when the face is close to one end of the lens surface of the iris image pickup module, the iris image pickup module acquires iris information of the face and transmits the information to the controller, and the controller compares the iris information with the preset iris information. When the iris information is matched with the preset iris information, the terminal equipment is unlocked; and when the iris information is different from the preset iris information, the terminal equipment keeps the original state.
In another embodiment, the memory is configured to store a plurality of pieces of the preset iris information, each piece of the preset iris information corresponds to one piece of character information, the controller is configured to compare whether the target iris information matches with the preset iris information, and when the target iris information matches with any one piece of the preset iris information, the terminal device outputs the character information corresponding to the preset iris information. In this embodiment, the personal information may be a name of a person or other personal information. The terminal equipment can rapidly output character information through the iris information acquired by the iris camera module.
In another embodiment, the difference from the previous embodiment is that the controller is configured to compare whether the target iris information matches with the preset iris information, and when the target iris information matches with any one of the preset iris information, the terminal device outputs character information corresponding to the preset iris information, and the controller sends an unlocking control command to unlock the terminal device.
The embodiments of the present invention have been described in detail, and the principles and embodiments of the present invention have been explained herein using specific embodiments, and the above description of the embodiments is only used to help understand the method and the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the specific implementation and application scope, to sum up, the content of the present specification should not be understood as the limitation of the present invention.
Claims (10)
1. An iris camera module is used in terminal equipment and is characterized by comprising a base, a first lens, a second lens, a photosensitive chip, a shutter and a circuit board, wherein the first lens and the second lens are arranged on the base side by side and have parallel optical axes; the shutter comprises two shielding parts which can be opened and closed, and the two shielding parts are respectively arranged at the object sides of the first lens and the second lens along the optical axis direction;
when the shielding part at the object side of the first lens is opened, the photosensitive chip acquires face information through the first lens, and the circuit board is used for receiving the face information so as to realize the recognition of the face information and acquire the position information of human eyes; when the shielding part at the object side of the second lens is opened, the photosensitive chip acquires iris information through the second lens according to the position information of the human eyes.
2. The iris image module of claim 1 further comprising a controller electrically connected to the circuit board, wherein the controller is configured to send a control signal, and the circuit board is configured to receive the control signal, so that the two shielding portions are opened or closed.
3. The iris image pickup module as claimed in claim 1, wherein the terminal device comprises a controller, the controller is electrically connected to the circuit board, the controller is configured to send a control signal, and the circuit board is configured to receive the control signal, so that the two shielding portions are opened or closed.
4. An iris camera module of claim 2 or 3, wherein the field angle of the first lens is wider than the field angle of the second lens.
5. The iris image pickup module as claimed in claim 4, wherein the first lens comprises a first folding element and a first lens, the first folding element is arranged between the first lens and the photosensitive chip, and when the photosensitive chip acquires the face information, light passes through the first lens, passes through the first folding element and is projected onto the photosensitive chip to form the face information; the second lens comprises a second lens and a second folding element, the second folding element is arranged between the second lens and the photosensitive chip, and when the photosensitive chip acquires iris information, light passes through the second lens, passes through the second folding element and is projected onto the photosensitive chip to form the iris information.
6. An iris image pickup module as claimed in claim 5, wherein the first return element is a prism or a plane mirror, and the second return element is a prism or a plane mirror.
7. The iris image capture module of claim 6 wherein the second lens is a zoom lens.
8. A terminal device, characterized in that, includes the body and the iris image pickup module of any one of claims 1-7, the body includes the casing, the iris image pickup module is acceptd in the casing, terminal device still includes the memory, the memory is used for storing predetermines iris information, terminal device still includes the controller, the controller is used for reading predetermine iris information and the target iris information that iris image pickup module obtained, the controller is still used for comparing predetermine iris information with the target iris information, and output recognition result.
9. The terminal device of claim 8, wherein the memory is configured to store a plurality of pieces of predetermined iris information, each piece of predetermined iris information corresponds to a piece of character information, the controller is configured to compare whether the target iris information matches with the predetermined iris information, and when the target iris information matches with any one of the predetermined iris information, the terminal device outputs the character information corresponding to the predetermined iris information.
10. The terminal device according to claim 8 or 9, wherein the controller is configured to compare whether the target iris information matches the preset iris information, and when the target iris information matches the preset iris information, the controller issues an unlocking control command to unlock the terminal device.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120623751.4U CN214795945U (en) | 2021-03-26 | 2021-03-26 | Iris camera module and terminal equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120623751.4U CN214795945U (en) | 2021-03-26 | 2021-03-26 | Iris camera module and terminal equipment |
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| CN214795945U true CN214795945U (en) | 2021-11-19 |
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