CN106339696B - Miniature anti-shake iris discernment module and terminal equipment - Google Patents
Miniature anti-shake iris discernment module and terminal equipment Download PDFInfo
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- CN106339696B CN106339696B CN201610866438.7A CN201610866438A CN106339696B CN 106339696 B CN106339696 B CN 106339696B CN 201610866438 A CN201610866438 A CN 201610866438A CN 106339696 B CN106339696 B CN 106339696B
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- shake
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- lens
- iris recognition
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/18—Eye characteristics, e.g. of the iris
- G06V40/19—Sensors therefor
Abstract
The invention provides a miniature anti-shake iris recognition module which comprises a camera module body, a detection device and an anti-shake mechanism. When the operation module shakes, a detection device on the camera module body detects the displacement difference between the position of the optical axis of the lens in the lens barrel on the photosensitive chip and the central position of the photosensitive chip, the displacement difference is converted into an electric signal and is transmitted to a driving chip, the driving chip calculates the displacement to be compensated and controls the current amount of a coil on the lens barrel, and the generated electromagnetic force and the magnetic substance generate magnetic attraction or repulsion force to drive the lens barrel to compensate on the relative displacement between the optical axis and the central position of the photosensitive chip. According to the miniature anti-shake iris recognition module, the miniature anti-shake mechanism is arranged, so that the problems that iris pictures cannot be quickly recognized due to the fact that an external support is required to be provided and the hand shakes are solved, the success rate of one-time recognition of the handheld iris terminal device is improved, and the iris recognition process can be completed stably at one time.
Description
Technical Field
The invention belongs to the technical field of camera modules, and particularly relates to a miniature anti-shake iris recognition module and a terminal device.
Background
In recent years, iris recognition systems have been increasingly applied to secure verification of the identity of an individual. Iris recognition systems are highly appreciated because they have superior recognition rate and high accuracy compared to fingerprint recognition systems. The conventional iris identification camera module generally has a small field angle, and if the lens slightly shakes, the image is blurred. The conventional anti-shake method generally adopts an external auxiliary anti-shake camera bracket or a common auto-focus camera with a high-resolution image sensor combined with a voice coil motor. Because miniature iris identification module is applied to handheld terminal equipment usually, like cell-phone, panel computer, wearing equipment etc. inevitable can produce the camera lens shake when shooing the iris image, and conventional anti-shake mode is not very suitable for miniature iris identification module, needs the assistance of external support, perhaps need carry out many times to shoot just can adjust the optical axis of lens to with the central point on the sensitization chip coincide to catch clear iris picture. The conventional anti-shake method causes the process of iris recognition to be much slower than fingerprint recognition, and the user experience is not good.
Therefore, how to solve the problem of one-time identification by the anti-shake iris identification module is a problem to be urgently solved by those skilled in the art.
Disclosure of Invention
The invention provides a miniature anti-shake iris recognition module and terminal equipment, wherein the module is provided with a miniature anti-shake mechanism, so that the shooting problems that iris pictures cannot be quickly recognized and the like due to the fact that an external support is required to be provided and the hand shakes are avoided, and the iris recognition process can be completed at one time.
In order to solve the above technical problems, the present invention provides a miniature anti-shake iris recognition module, comprising:
the camera module body comprises a lens barrel;
the detection device is arranged on the camera module body and used for detecting the displacement difference between the position of the optical axis of the lens in the lens cone on the photosensitive chip and the central position of the photosensitive chip;
the anti-shake mechanism comprises a driving chip connected with the detection device, a magnetic substance arranged on the side wall of the camera module body and a coil arranged at the top end of the lens cone, wherein the driving chip is used for acquiring the displacement difference and calculating the displacement required to be compensated by the lens according to the displacement difference; the driving chip can control the electromagnetic force generated by the coil.
Preferably, in the above miniature anti-shake iris recognition module, the miniature anti-shake iris recognition module further includes a suspension spring piece which can be close to or far away from the optical axis, and the lens barrel is connected with the magnetic substance through the suspension spring piece.
Preferably, in the miniature anti-shake iris recognition module, the detection device is a gyroscope.
Preferably, in the miniature anti-shake iris recognition module, the gyroscope is a 2-axis gyroscope, a 3-axis gyroscope, a 6-axis gyroscope or a 9-axis gyroscope.
The invention also provides terminal equipment applying the miniature anti-shake iris identification module.
Preferably, in the above terminal device, the terminal device is a mobile phone, a tablet computer, a notebook computer, a card swiping machine, a wearable device or an access control system.
The invention provides a miniature anti-shake iris identification module which comprises a camera module body, a detection device and an anti-shake mechanism. When the micro iris recognition module is operated to shake, a detection device on the camera module body detects the displacement difference between the position of the optical axis of the lens in the lens cone on the photosensitive chip and the central position of the photosensitive chip, the displacement difference is converted into an electric signal and is transmitted to the driving chip, the driving chip calculates the displacement to be compensated, the driving chip generates appropriate electromagnetic force by controlling the current amount of the coil on the lens cone, the driving chip generates magnetic attraction or repulsion with magnetic substances to drive the lens in the lens cone to shift, and further drives the lens cone to compensate on the relative displacement between the optical axis of the lens and the central position of the photosensitive chip, and corrects the deviation of an optical path, so that the image blurring caused by shaking is effectively avoided. Compared with the prior art, the miniature anti-shake iris recognition module and the terminal equipment provided by the invention have the advantages that the miniature anti-shake mechanism is arranged, so that the shooting problems that iris pictures cannot be quickly recognized and the like due to the fact that an external support is required to be provided and the hands shake are avoided, the one-time recognition success rate of handheld iris terminal equipment is improved, and the iris recognition process can be quickly and stably completed.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural view of a micro anti-shake iris recognition module provided in the present invention;
FIG. 2 is a schematic structural view of the micro anti-shake iris recognition module according to the present invention when the optical axis of the lens is shifted;
FIG. 3 is a schematic structural diagram of the micro anti-shake iris recognition module provided by the present invention during calibration of the optical axis of the swinging lens;
fig. 4 is a schematic structural diagram of the micro anti-shake iris recognition module provided by the present invention when the optical axis of the translation lens is corrected.
In the figure: lens barrel 101, magnetic substance 301, suspension spring piece 302, photosensitive chip 303, optical axis 4.
Detailed Description
The core of the invention is to provide a miniature anti-shake iris recognition module and terminal equipment, and the module is provided with a miniature anti-shake mechanism, so that the shooting problems that iris pictures cannot be quickly recognized and the like due to the need of providing an external support and the shake of human hands are avoided, and the success rate of primary recognition of handheld iris terminal equipment is improved.
In order to make those skilled in the art better understand the technical solutions provided by the present invention, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1 to 4, a micro anti-shake iris recognition module provided by the present invention includes a camera module body, a detection device and an anti-shake mechanism. The camera module body includes a lens barrel 101. The detection device is arranged on the camera module body and used for detecting the displacement difference between the position of the optical axis 4 of the lens in the lens barrel 101 on the photosensitive chip 303 and the central position of the photosensitive chip 303. The anti-shake mechanism comprises a driving chip connected with the detection device, a magnetic substance 301 arranged on the side wall of the camera module body and a coil arranged at the top end of the lens barrel 101, wherein the driving chip is used for obtaining displacement difference and calculating displacement amount required to be compensated according to the displacement difference. The driving chip can control the electromagnetic force generated by the coil. The magnetic substance 301 can be a substance which can generate magnetism under the action of a magnetic field, acting force is generated by the coil and the magnetic substance 301, the lens barrel 101 can be driven to move transversely or longitudinally to realize optical anti-shake with two dimensions, and the optical axis 4 is intersected and coincided with the central position of the photosensitive chip 303.
When a terminal product operating the micro iris recognition module shakes, a detection device arranged in the module detects the displacement difference of the lens cone, the displacement difference is converted into an electric signal and is transmitted to a driving chip, the driving chip calculates the displacement required to be compensated, the driving chip generates appropriate electromagnetic force by controlling the current amount of a coil on the lens cone 101, generates magnetic attraction or repulsion with the magnetic substance 301, drives the lens cone 101 to displace, further drives the lens cone 101 to compensate on the relative displacement between the optical axis 4 of the lens and the central position of the photosensitive chip 303, corrects the offset of an optical path, and therefore image blurring caused by shaking is effectively avoided.
In actual life, in a normal state, the lens of the miniature anti-shake iris recognition module is in a state as shown in fig. 1, the optical axis 4 coincides with the central position of the photosensitive chip 303, when the lens shakes and shifts left or right, as shown in fig. 2, or the lens tilts, the anti-shake mechanism can correct the position of the lens to shift or translate the lens, please refer to fig. 3 and 4, so that the optical axis 4 of the lens is always in the central position of the photosensitive chip 303, and a clear picture is shot.
Compared with the prior art, the miniature anti-shake iris recognition module provided by the invention has the advantages that the module is provided with the miniature anti-shake mechanism, so that the shooting problems that iris pictures cannot be quickly recognized and the like due to the fact that an external support is required to be provided and the hands shake are avoided, the one-time recognition success rate of handheld iris terminal equipment is improved, and the iris recognition process can be stably completed at one time. The fingerprint identification system has the same convenience as fingerprint identification and higher personal identification safety, can provide better and safer identification experience for consumers, and has wide market prospect.
The miniature anti-shake iris recognition module further comprises a suspension spring piece 302 which can be close to or far away from the optical axis 4, and the magnetic substance 301 is arranged on the side wall of the lens barrel 101 through the suspension spring piece 302. In the process of correcting the miniature anti-shake iris recognition module, in the process of generating magnetic attraction or repulsion force between the magnetic substance 301 and the electromagnetic force of the coil in the lens barrel 101, the suspension spring piece 302 can drive the lens barrel 101 to transversely translate, longitudinally translate or swing at a certain angle.
Further, the detection device is a gyroscope, i.e., an angular velocity sensor. The gyroscope may be a 2-axis gyroscope, a 3-axis gyroscope, a 6-axis gyroscope, or a 9-axis gyroscope. In addition, the gyroscope can also be a gyroscope with other axis numbers, and the gyroscope needs to be selected according to practical application, and the application is not particularly limited.
The invention also provides a terminal device which comprises the iris identification camera module. The terminal equipment can be preferably a mobile phone, a tablet personal computer, a notebook computer, a card swiping machine, wearable equipment or an access control system and the like.
Terminal equipment's miniature anti-shake iris discernment module mainly includes: camera module body, detection device and anti-shake mechanism. The detection device is arranged on the camera module body and used for detecting the moving track of the camera module body. The anti-shake mechanism comprises a driving chip connected with the detection device, a magnetic substance 301 arranged on the side wall of the lens barrel 101 and a coil arranged at the top end of the lens barrel 101, wherein the driving chip is used for acquiring a moving track and calculating a displacement amount required to be compensated according to the moving track; the driving chip is also connected with the coil.
According to the terminal equipment provided by the invention, the miniature anti-shake iris recognition module in the scheme is adopted, and the module is provided with the miniature anti-shake mechanism, so that the shooting problems that iris pictures cannot be quickly recognized and the like due to the fact that an external support is required to be provided and the hand shakes are avoided, the one-time recognition success rate of the handheld iris terminal equipment is improved, and the iris recognition process can be stably completed at one time. Meanwhile, the fingerprint identification system has the same convenience as fingerprint identification and higher personal identification safety, can provide better and safer identification experience for consumers, and has wide market prospect.
The above detailed description is provided for the miniature anti-shake iris recognition module and the terminal device provided by the invention. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (5)
1. The utility model provides a miniature anti-shake iris discernment module which characterized in that includes:
a camera module body including a lens barrel (101);
the detection device is arranged on the camera module body and used for detecting the displacement difference between the position of the optical axis (4) of the lens in the lens barrel (101) on the photosensitive chip (303) and the central position of the photosensitive chip (303);
the anti-shake mechanism comprises a driving chip connected with the detection device, a magnetic substance (301) arranged on the side wall of the camera module body and a coil arranged at the top end of the lens barrel (101), wherein the driving chip is used for acquiring the displacement difference and calculating the displacement amount required by the inner lens to be compensated according to the displacement difference; the driving chip can control the electromagnetic force generated by the coil;
a suspension spring (302) which can be close to or far from the optical axis (4), wherein the inner lens is connected with the magnetic substance (301) through the suspension spring (302).
2. The miniature anti-shake iris recognition module set forth in claim 1, wherein the detection device is a gyroscope.
3. The miniature anti-shake iris recognition module set forth in claim 2, wherein the gyroscope is a 2-axis gyroscope, a 3-axis gyroscope, a 6-axis gyroscope, or a 9-axis gyroscope.
4. A terminal device, characterized in that it comprises the miniature anti-shake iris recognition module set according to any one of claims 1-3.
5. The terminal device according to claim 4, wherein the terminal device is a mobile phone, a tablet computer, a notebook computer, a card reader, a wearable device or an access control system.
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| CN201610866438.7A CN106339696B (en) | 2016-09-29 | 2016-09-29 | Miniature anti-shake iris discernment module and terminal equipment |
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| CN201610866438.7A CN106339696B (en) | 2016-09-29 | 2016-09-29 | Miniature anti-shake iris discernment module and terminal equipment |
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| CN106339696B true CN106339696B (en) | 2020-12-15 |
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| CN108737737A (en) * | 2018-08-31 | 2018-11-02 | 信利光电股份有限公司 | A kind of stabilization camera module, its control method and electronic equipment |
| CN109278440B (en) * | 2018-09-25 | 2020-06-02 | 绵阳鼎飞益电子科技有限公司 | System for be used for parkinson syndrome patient to write |
| CN110351465A (en) * | 2019-07-18 | 2019-10-18 | 珠海格力电器股份有限公司 | A kind of stabilization camera module and its anti-fluttering method |
| CN111835951B (en) * | 2020-07-13 | 2022-03-25 | 杭州海康威视数字技术股份有限公司 | Adjusting method of shooting lens and shooting lens |
| CN114390203A (en) * | 2022-01-16 | 2022-04-22 | 昆山丘钛光电科技有限公司 | Anti-shake module |
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