CN110703540B - Method for realizing optical fingerprint camera module - Google Patents
Method for realizing optical fingerprint camera module Download PDFInfo
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- CN110703540B CN110703540B CN201810742502.XA CN201810742502A CN110703540B CN 110703540 B CN110703540 B CN 110703540B CN 201810742502 A CN201810742502 A CN 201810742502A CN 110703540 B CN110703540 B CN 110703540B
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- module
- camera module
- locking structure
- optical fingerprint
- temperature
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B17/00—Details of cameras or camera bodies; Accessories therefor
- G03B17/02—Bodies
- G03B17/12—Bodies with means for supporting objectives, supplementary lenses, filters, masks, or turrets
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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
- G06V40/12—Fingerprints or palmprints
- G06V40/13—Sensors therefor
- G06V40/1318—Sensors therefor using electro-optical elements or layers, e.g. electroluminescent sensing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
- H04N23/55—Optical parts specially adapted for electronic image sensors; Mounting thereof
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Human Computer Interaction (AREA)
- Theoretical Computer Science (AREA)
- Studio Devices (AREA)
Abstract
The invention provides a method for realizing an optical fingerprint camera module, wherein the camera module finishes focusing, and when no electricity is available, the position of a lens cone module of a camera is fixed through clamping friction force, so that the corresponding position of the lens cone module does not change when the camera module works, thereby reducing the power consumption of a system, ensuring the imaging quality and improving the fingerprint identification accuracy.
Description
Technical Field
The invention relates to a method for realizing an optical fingerprint camera module.
Background
The current fingerprint identification scheme mainly comprises an optical technology, a silicon technology (a capacitance type/radio frequency type), an ultrasonic technology and the like. Among them, the optical fingerprint recognition technology has been widely used in portable electronic devices.
With the rapid development of portable electronic devices, the requirements of people on optical fingerprint identification devices are gradually increasing, and especially on the premise that the size of the optical fingerprint identification device is limited, in order to ensure the required optical characteristics, such as resolution, after the camera module is focused, even in the unpowered state, the corresponding position of the lens cone module does not change when the camera module works, so as to ensure that clear and accurate fingerprint images are collected.
Disclosure of Invention
The invention aims to provide a method for realizing an optical fingerprint camera module, which reduces the power consumption of a system, ensures the imaging quality and improves the fingerprint identification accuracy.
In order to solve the above technical problems, the present invention provides a method for implementing an optical fingerprint camera module, where the camera module completes focusing, and when no power is available, the position of a lens barrel module of a camera is fixed by a clamping friction force, so that the corresponding position of the lens barrel module does not change when the camera module works.
Preferably, the clamping mode is as follows: and elastic clamping is carried out through the elastic clamping structure.
Preferably, the clamping mode is as follows: the position of the lens barrel module is clamped and locked through the locking structure.
Preferably, the locking structure may be an elastic locking structure.
Preferably, the locking structure is a temperature-controlled locking structure, and the locking structure locks the lens barrel module at the current position at normal temperature when the current heating is not used; when the current is heated to a certain temperature, the locking structure releases the lens barrel module.
Preferably, the temperature-controlled locking structure consists of a bimetallic strip and a driving circuit.
Preferably, the temperature control locking structure consists of a memory alloy and a driving circuit.
Preferably, the temperature control locking structure is an electromagnetic control mechanical locking structure.
Preferably, the temperature control locking structure is a temperature-variable viscous locking structure; when the temperature of the viscous lock catch structure is low, the viscosity of the adhesive of the viscous lock catch structure is high, the lens cone module is adhered, and the lens cone module is locked at the current position; when the temperature is higher, the viscosity of the adhesive of the viscous lock catch structure is lower, the lens cone module is released by the viscous lock catch structure, and the lens cone module moves.
According to the implementation method of the optical fingerprint camera module, the camera module finishes focusing, and when no electricity is available, the position of the lens cone module of the camera is fixed through clamping friction force, so that the corresponding position of the lens cone module does not change when the camera module works, and therefore the power consumption of a system is reduced, the imaging quality is guaranteed, and the fingerprint identification accuracy is improved.
Drawings
Fig. 1 is a schematic cross-sectional view of an optical fingerprint camera module according to an embodiment of the present invention.
Detailed Description
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may be embodied in many different forms than those herein set forth and should be readily appreciated by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Next, the present invention is described in detail by using schematic diagrams, and when the embodiments of the present invention are described in detail, the schematic diagrams are only examples for convenience of description, and the scope of protection of the present invention should not be limited herein.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, the present invention is described in detail with reference to the accompanying drawings.
The invention provides a method for realizing an optical fingerprint camera module, wherein the camera module finishes focusing, and when no electricity is available, the position of a lens cone module of a camera is fixed through clamping friction force, so that the corresponding position of the lens cone module does not change when the camera module works, thereby reducing the power consumption of a system, ensuring the imaging quality and improving the fingerprint identification accuracy.
Fig. 1 is a schematic cross-sectional view of an optical fingerprint camera module according to an embodiment of the present invention, wherein, during the process of extending and retracting the camera module, a lens barrel module 50 moves to adjust an image distance and an object distance, so as to present a clear image and realize focusing. The optical fingerprint camera module of the invention further comprises an elastic clamping structure 40 arranged around the lens cone module 50, when the camera module finishes focusing, when no electricity is available, the lens cone module 50 is elastically clamped by the elastic clamping structure 40 to keep the position of the lens cone module 50, so that the corresponding position of the lens cone module 50 is not changed when the camera module works. The elastic clamping structure 40 and the clamping barrel module 50 may be in point contact, line contact or surface contact.
As shown in fig. 1, the optical fingerprint camera module of the present invention can further hold and lock the position of the lens barrel module 50 by the locking structures 41 and 51, and preferably, the locking structures 41 and 51 can be elastic locking structures, that is, made of elastic material. The elastic clamping structure 40 is provided with a protrusion 41, the lens barrel module 50 is provided with a groove 51, and the protrusion 41 and the groove 51 correspond to each other. When the lens barrel module 50 is static, the protrusion 41 and the groove 51 are engaged to form self-locking, so that the lens barrel module 50 is prevented from sliding; when the lens barrel module 50 moves in steps, a force is applied by the action of current to separate the protrusion 41 from the groove 51, so that unlocking is realized. It will be understood by those skilled in the art that in other embodiments not shown, it may be configured that the elastic clamping structure 40 is provided with a groove, and the lens barrel module 50 is provided with a protrusion, and the protrusion and the groove correspond to each other.
In addition, the locking structure may also be a temperature control locking structure, and when the current heating is not used, the locking structure locks the lens barrel module 50 at the current position at normal temperature; when the current is heated to a certain temperature, the latch structure releases the lens barrel module 50.
In a preferred embodiment of the present invention, the temperature-controlled locking structure is composed of a bimetal and a driving circuit.
In a preferred embodiment of the present invention, the temperature-controlled locking structure is composed of a memory alloy and a driving circuit.
In a preferred embodiment of the present invention, the temperature-controlled latch structure is an electromagnetic-controlled mechanical latch structure.
In a preferred embodiment of the present invention, the temperature-controlled locking structure is a temperature-variable viscous locking structure; when the temperature of the viscous locking structure is low, the viscosity of the adhesive of the viscous locking structure is high, the lens cone module 50 is adhered, and the lens cone module 50 is locked at the current position; when the temperature is high, the viscosity of the adhesive of the viscous locking structure is low, the lens cone module 50 is released by the viscous locking structure, and the lens cone module 50 moves.
In summary, in the implementation method of the optical fingerprint camera module, the camera module finishes focusing, and when no electricity is available, the position of the lens barrel module of the camera is fixed through the clamping friction force, so that the corresponding position of the lens barrel module does not change when the camera module works, thereby reducing the system power consumption, ensuring the imaging quality and improving the fingerprint identification accuracy.
Although the present invention has been described with reference to the preferred embodiments, it is not intended to limit the present invention, and those skilled in the art can make possible variations and modifications of the present invention using the method and the technical contents disclosed above without departing from the spirit and scope of the present invention, and therefore, any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention are all within the scope of the present invention.
Claims (5)
1. The method for realizing the optical fingerprint camera module is characterized in that the camera module finishes telescopic focusing, and when no electricity is available, the position of a lens cone module of the camera is fixed through clamping friction force, so that the corresponding position of the lens cone module does not change when the camera module works; the clamping mode is as follows: the position of the lens barrel module is clamped and locked through the locking structure; the locking structure is a temperature control locking structure, and locks the lens barrel module at the current position at normal temperature when the current heating is not used; when the current is heated to a certain temperature, the locking structure releases the lens barrel module.
2. The method for implementing an optical fingerprint camera module according to claim 1, wherein the temperature control locking structure is composed of a bimetallic strip and a driving circuit.
3. The method for implementing an optical fingerprint camera module according to claim 1, wherein the temperature control locking structure is composed of a memory alloy and a driving circuit.
4. The method for implementing an optical fingerprint camera module according to claim 1, wherein the temperature control latch structure is an electromagnetic control mechanical latch structure.
5. The method for implementing the optical fingerprint camera module according to claim 1, wherein the temperature control locking structure is a temperature-variable viscous locking structure; when the temperature of the viscous lock catch structure is low, the viscosity of the adhesive of the viscous lock catch structure is high, the lens cone module is adhered, and the lens cone module is locked at the current position; when the temperature is higher, the viscosity of the adhesive of the viscous lock catch structure is lower, the lens cone module is released by the viscous lock catch structure, and the lens cone module moves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810742502.XA CN110703540B (en) | 2018-07-09 | 2018-07-09 | Method for realizing optical fingerprint camera module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810742502.XA CN110703540B (en) | 2018-07-09 | 2018-07-09 | Method for realizing optical fingerprint camera module |
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| CN110703540A CN110703540A (en) | 2020-01-17 |
| CN110703540B true CN110703540B (en) | 2022-07-15 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11337995A (en) * | 1998-05-28 | 1999-12-10 | Minolta Co Ltd | Image blurring correcting optical device |
| CN1916683A (en) * | 2005-08-15 | 2007-02-21 | 富士能株式会社 | Actuator |
| CN101408658A (en) * | 2007-10-09 | 2009-04-15 | 一品光学工业股份有限公司 | Lens shifting mechanism with shape memory alloy |
| CN103676403A (en) * | 2012-09-04 | 2014-03-26 | 克拉斯农机公司 | Camera lens |
| CN204314588U (en) * | 2014-12-04 | 2015-05-06 | 白花花 | A kind of backpack safety fixing structure for camera |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100730910B1 (en) * | 2005-08-13 | 2007-06-21 | (주)디바이스 온 | Mobile phone zoom camera module and control method thereof |
| CN2886611Y (en) * | 2006-03-30 | 2007-04-04 | 天津三星电机有限公司 | Automatic focusing mechanism for cam of mobile phone |
| JP2008129252A (en) * | 2006-11-20 | 2008-06-05 | Nec Saitama Ltd | Imaging unit, imaging apparatus, and method for performing switching between ordinary photography and macrophotography |
| JP2013120375A (en) * | 2011-12-09 | 2013-06-17 | Konica Minolta Advanced Layers Inc | Driving device |
| CN103501402B (en) * | 2013-08-13 | 2017-10-13 | 格科微电子（上海）有限公司 | A kind of control method and camera module for camera module |
-
2018
- 2018-07-09 CN CN201810742502.XA patent/CN110703540B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11337995A (en) * | 1998-05-28 | 1999-12-10 | Minolta Co Ltd | Image blurring correcting optical device |
| CN1916683A (en) * | 2005-08-15 | 2007-02-21 | 富士能株式会社 | Actuator |
| CN101408658A (en) * | 2007-10-09 | 2009-04-15 | 一品光学工业股份有限公司 | Lens shifting mechanism with shape memory alloy |
| CN103676403A (en) * | 2012-09-04 | 2014-03-26 | 克拉斯农机公司 | Camera lens |
| CN204314588U (en) * | 2014-12-04 | 2015-05-06 | 白花花 | A kind of backpack safety fixing structure for camera |
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| CN110703540A (en) | 2020-01-17 |
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