CN101907761A - Automatic zooming module device - Google Patents
Automatic zooming module device Download PDFInfo
- Publication number
- CN101907761A CN101907761A CN201010226521.0A CN201010226521A CN101907761A CN 101907761 A CN101907761 A CN 101907761A CN 201010226521 A CN201010226521 A CN 201010226521A CN 101907761 A CN101907761 A CN 101907761A
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- threaded rod
- lens
- lens mount
- nut
- stepper motor
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Abstract
The invention relates to an automatic zooming module device, which comprises a shell consisting of an upper cover and a base. A lens extending from the inside of the upper cover and a stepper motor for driving the lens to extend and retract are arranged in the shell. The lens is fixed on a lens mount positioned in the shell. The stepper motor is connected with the lens mount by a transmission assembly. The transmission assembly comprises an output threaded rod which is connected to an output shaft of the stepper motor and rotates synchronously with the output shaft. A nut is sleeved on the output threaded rod. Both a screw thread on the output threaded rod and a screw thread on the nut matched with the output threaded rod are transmission screw threads. The nut is fixedly connected with the lens mount. A guide post which is fixed in the shell and guides the lens mount to take linear motion along the output threaded rod is movably inserted into the lens mount. The guide post is parallel to the output threaded rod. The automatic zooming module device of the invention has the advantages of large range of focusing travel and precise and accurate focusing and positioning, is provided with a zero position detection device, meets requirements of the market and is valuable for popularization and use.
Description
Technical field
The present invention relates to a kind of automatic zooming module device.
Background technology
At present, camera lens zoom mode on the market mainly contains two kinds, a kind of is manual focusing, thereby it is to regulate a kind of clearly focusing mode of photo that camera lens makes camera take out by the hand-turning focusing ring, this mode relies on differentiation and photographer's skill level even photographer's the eyesight of human eye to the image on the focusing screen to a great extent, and it is not accurate to cause the manual focusing mode to be located; Early stage single-mirror reflecting camera and paraxonic camera substantially all are to use manual focus to finish focusing operation, and present accurate specialty and special digital camera also have single anti-digital camera all to be provided with the function of manual focus, to cooperate different shooting needs.Another kind is VCM (Voice Coil Motor) autozoom, VCM refers to the voice coil motor of electronics the inside, voice coil motor is a kind of of motor, because principle and loudspeaker are similar, so be voice coil motor, the voice coil motor stroke range is little, and its function is luminous point is correctly focused on the object lens sheet, be used for mobile phone or computer camera, there is the little shortcoming of focusing stroke range in VCM autozoom mode.And manual focusing mode and VCM autozoom mode all do not have zero-crossing detecting device, because the characteristic and the type of drive of stepper motor, when getting back to mechanical zero, the control step motor can have maximum error once, the accuracy of reading of can't guaranteeing to focus is reliable, cause the focusing read untrue easily, influence people's normal use, bring inconvenience for people's work and life.
Summary of the invention
The technical problem to be solved in the present invention provides the big and location precision automatic zooming module device accurately of focusing of a kind of focusing stroke range.
For solving the problems of the technologies described above, the present invention by the following technical solutions:
A kind of automatic zooming module device, comprise the housing of forming by loam cake and base, extended camera lens and the flexible stepper motor of driving camera lens from loam cake are installed in housing, camera lens is fixed in one and is positioned on the lens mount of housing, be connected by transmission component between stepper motor and the lens mount, described transmission component comprises that one is connected in the output threaded rod that rotates synchronously with output shaft on the stepper motor output shaft, be with a nut on the output threaded rod, screw thread on screw thread on the output threaded rod and the nut that matches is motion thread, be affixed between nut and the lens mount, activity is interspersed with one and is fixed in the housing in lens mount, the guidepost that the guiding lens mount moves as straight line along the output threaded rod, guidepost is parallel with the output threaded rod.
As the improvement to such scheme, above-mentioned lens mount initial position is provided with lens control circuit and is connected positive plate and the negative plate that is used to detect stepper motor original state position, and the original state nut contacts with negative plate to form with positive plate and conducts.
As further improvement of these options, above-mentioned output threaded rod upper end is fixed on the handware, and handware is fixed in the housing, is positioned at the below of handware with the nut of output threaded rod coupling.
Further, above-mentioned lens mount one side is provided with one and protrudes piece, and the side of protruding piece has groove, and nut is plugged in the groove.
The stepper motor of automatic zooming module device of the present invention connects lens mount by transmission component, the nut that is socket on the stepper motor output threaded rod is fixed on the lens mount, make rotatablely moving of stepper motor be converted to rectilinear motion and realize that the relative loam cake of camera lens carries out expanding-contracting action, thereby realize the automatic focusing of camera lens, and stepper motor is done the pulse feed motion under the control of lens control circuit, can make automatic zooming module device focusing of the present invention location accurate more accurate by pulse signal or the adjustment output threaded rod pitch of adjusting stepper motor, also can be by adjusting the length adjustment focusing stroke range of output threaded rod.In addition, at the lens mount initial position positive plate being set is connected with lens control circuit with negative plate, by nut positive plate and negative plate conducting being formed the reset enable signal stepper motor at lens initial position resets, make the stepper motor position have feedback, thereby reach the purpose of eliminating error, make the focusing reading more accurate.
Description of drawings
Accompanying drawing 1 is decomposition texture synoptic diagram of the present invention;
Accompanying drawing 2 is inner structure synoptic diagram of the present invention.
Embodiment
For the ease of those skilled in the art's understanding, structural principle of the present invention is further described in detail below in conjunction with specific embodiment and accompanying drawing:
As accompanying drawing 1-2, a kind of automatic zooming module device, comprise housing 1, housing 1 is made up of loam cake 11 and base 12, camera lens 3, lens mount 4 are installed in housing 1 and drive the stepper motor 5 that camera lens 3 stretches, camera lens 3 tops extend out from loam cake 11, and camera lens 3 bottoms are fixed on the lens mount 4, be connected by a transmission component 7 between stepper motor 5 and the lens mount 4, transmission component 7 can be converted to rotatablely moving of stepper motor 5 rectilinear motion and realize that camera lens 3 relative loam cakes 11 carry out expanding-contracting action.
The transmission component 7 that is adopted in the present embodiment comprises an output threaded rod 51, output threaded rod 51 is connected on stepper motor 5 output shafts and with output shaft and rotates synchronously, the upper end of output threaded rod 51 is fixed on the handware 71, handware 71 is fixed in the housing 1, on output threaded rod 51, be with a nut 72, be positioned at the below of handware 71 with the nut 72 of output threaded rod 51 coupling, the screw thread on screw thread on the output threaded rod 51 and the nut 72 that matches is motion thread.Nut 72 is a sheet, insert in form in the default fixed orifice of lens mount 4 sidewalls with lens mount 4 between affixed, lens mount 4 one sides are provided with one and protrude piece 41, the side of protrusion piece 41 has groove 411, nut 72 is plugged in the groove 411.Activity is interspersed with guidepost 2 in lens mount, and guidepost 2 is fixed in the housing 1, and guidepost 2 is parallel with output threaded rod 51, and guidepost 2 is used to guide lens mount 4 and moves as straight line along output threaded rod 51.
In addition, be provided with positive plate 81 and negative plate 82 at lens mount 4 initial positions, positive plate 81 is connected and is used to detect stepper motor 5 original state positions respectively with lens control circuit with negative plate 82, original state nut 72 contacts with negative plate 82 to form with positive plate 81 and conducts, and the null position of all right control step motor 5 forward and reverse rotations of lens control circuit and control step motor 5 detects.
When autozoom module of the present invention is worked, start power supply, lens control circuit sends signal and inputs to stepper motor 5, stepper motor 5 is realized the both forward and reverse directions rotation under the control of lens control circuit, stepper motor 5 drives 51 rotations of output threaded rod, because nut 72 is subjected to the restriction of guidepost 2, nut 72 drive lens mounts 4 are done straight line and are moved under the guide effect of guidepost 2, thereby realize the focusing action of camera lens 3.Finish when camera lens and to take when being retractable to initial position, because negative plate 82, stepper motor 5 is metal material with output threaded rod 51 and nut 72 and forever contacts each other, therefore as the negative pole of feedback circuit, when positive plate 81 contacts with nut 72, be the null position of stepper motor 5, testing circuit conducting simultaneously, lens control circuit detects it, the value at zero point that records is fed back to the focusing readout instrument that is connected with lens control circuit, the focusing readout instrument is adjusted stepper motor 5 drivers according to the value of feedback, thereby reach the purpose of eliminating error, make the focusing reading more accurate.The null position of stepper motor 5 detects the initial point position that has guaranteed stepper motor 5, makes stepper motor 5 positions have feedback.
Among the present invention, stepper motor 5 connects lens mount 4 by gearing, the nut 72 that is socket on the stepper motor 5 output threaded rods 51 is fixed on the lens mount 4, stepper motor 5 is done the pulse feed motion under the control of lens control circuit, the rotatablely moving of stepper motor 5 is converted to rectilinear motion and realizes that camera lens 3 relative loam cakes 11 carry out expanding-contracting action, realize the automatic focusing of camera lens 3, for example stepper motor 5 each pulse rotation 18 are spent, output threaded rod 51 is transformed into the moving only 0.01mm of straight-line displacement, the focusing location is accurately accurate, can make automatic zooming module device focusing of the present invention location accurate more accurate by pulse signal or adjustment output threaded rod 51 pitch of adjusting stepper motor 5, also can be by adjusting the length adjustment focusing stroke range of output threaded rod 51.In addition, at lens mount 4 initial positions positive plate 81 being set is connected with lens control circuit with negative plate 82, positive plate 81 and negative plate 82 conductings formation reset enable signal stepper motor 5 are resetted by nut 72 at camera lens 3 initial positions, make stepper motor 5 positions have feedback, thereby reach the purpose of eliminating error, make the focusing reading more accurate.
The preferred version that the foregoing description is realized for the present invention; and indefiniteness is exhaustive, and the present invention can also have other variations under same idea, need to prove; under the prerequisite that does not break away from inventive concept of the present invention, any conspicuous replacement is all within protection domain of the present invention.
Claims (4)
1. automatic zooming module device, comprise the housing of forming by loam cake (11) and base (12) (1), extended camera lens (3) and the flexible stepper motor (5) of driving camera lens from loam cake are installed in housing, camera lens is fixed in one and is positioned on the lens mount (4) of housing, be connected by transmission component (7) between stepper motor and the lens mount, it is characterized in that: described transmission component comprises that one is connected in the output threaded rod (51) that rotates synchronously with output shaft on the stepper motor output shaft, be with a nut (72) on the output threaded rod, screw thread on screw thread on the output threaded rod and the nut that matches is motion thread, be affixed between nut and the lens mount, activity is interspersed with one and is fixed in the housing in lens mount, the guidepost (2) that the guiding lens mount moves as straight line along the output threaded rod, guidepost is parallel with the output threaded rod.
2. automatic zooming module device according to claim 1, it is characterized in that: be provided with at the lens mount initial position and be connected positive plate (81) and the negative plate (82) that is used to detect stepper motor original state position with lens control circuit, the original state nut contacts with negative plate to form with positive plate and conducts.
3. automatic zooming module device according to claim 2 is characterized in that: described output threaded rod upper end is fixed on the handware (71), and handware is fixed in the housing, is positioned at the below of handware with the nut of output threaded rod coupling.
4. automatic zooming module device according to claim 3 is characterized in that: described lens mount one side is provided with one and protrudes piece (41), and the side of protruding piece has groove (411), and nut is plugged in the groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010226521.0A CN101907761A (en) | 2010-07-13 | 2010-07-13 | Automatic zooming module device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010226521.0A CN101907761A (en) | 2010-07-13 | 2010-07-13 | Automatic zooming module device |
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| Publication Number | Publication Date |
|---|---|
| CN101907761A true CN101907761A (en) | 2010-12-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010226521.0A Pending CN101907761A (en) | 2010-07-13 | 2010-07-13 | Automatic zooming module device |
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| CN (1) | CN101907761A (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102928945A (en) * | 2011-08-11 | 2013-02-13 | 鸿富锦精密工业（深圳）有限公司 | Lens module |
| CN103364933A (en) * | 2013-07-22 | 2013-10-23 | 中国科学院西安光学精密机械研究所 | Digital cam continuous zooming system |
| CN105516600A (en) * | 2015-12-31 | 2016-04-20 | 珠海市百爱科技有限公司 | Automatic focusing system and method |
| CN105988180A (en) * | 2015-02-13 | 2016-10-05 | 信泰光学(深圳)有限公司 | Optical device capable of quick focusing |
| CN107015422A (en) * | 2017-06-14 | 2017-08-04 | 山东同其智能科技有限公司 | A kind of novel photoelectric automatic focusing device |
| CN109445233A (en) * | 2018-12-28 | 2019-03-08 | 中山联合光电科技股份有限公司 | A kind of Anti-shaking structure of big focal length long stroke camera lens |
| WO2019085535A1 (en) * | 2017-10-31 | 2019-05-09 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Functional device and electronic apparatus |
| CN110524245A (en) * | 2019-09-29 | 2019-12-03 | 上海热像科技股份有限公司 | A kind of position adjusting mechanism and infreared imaging device |
| CN111479044A (en) * | 2020-04-14 | 2020-07-31 | Oppo广东移动通信有限公司 | Electronic equipment and camera module thereof |
| CN116055848A (en) * | 2023-03-31 | 2023-05-02 | 成都睿铂科技有限责任公司 | Active focal plane focusing method, camera and aerial camera |
| CN116261044A (en) * | 2023-03-17 | 2023-06-13 | 北京拙河科技有限公司 | Intelligent focusing method and device for hundred million-level cameras |
| WO2023231101A1 (en) * | 2022-05-30 | 2023-12-07 | 歌尔光学科技有限公司 | Lens module and electronic apparatus |
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| JP3244287B2 (en) * | 1991-06-19 | 2002-01-07 | ソニー株式会社 | Lens barrel |
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| CN1713015A (en) * | 2004-06-25 | 2005-12-28 | 夏普株式会社 | Lens driving unit |
| CN201732200U (en) * | 2010-07-13 | 2011-02-02 | 惠州市百宏微动技术工业有限公司 | Automatic zooming module device |
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Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US5005038A (en) * | 1983-10-11 | 1991-04-02 | Canon Kabushiki Kaisha | Focal length changeable camera |
| JP2887811B2 (en) * | 1990-01-19 | 1999-05-10 | 松下電器産業株式会社 | Lens drive |
| US5255035A (en) * | 1990-06-12 | 1993-10-19 | Konica Corporation | Focusing control apparatus for a camera |
| JP3138873B2 (en) * | 1991-06-08 | 2001-02-26 | 株式会社リコー | Driving device for variable focus lens with two groups |
| JP3244287B2 (en) * | 1991-06-19 | 2002-01-07 | ソニー株式会社 | Lens barrel |
| CN1207503A (en) * | 1997-08-04 | 1999-02-10 | 富士摄影胶片株式会社 | Zoom lens device with zooming position detector |
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102928945A (en) * | 2011-08-11 | 2013-02-13 | 鸿富锦精密工业（深圳）有限公司 | Lens module |
| CN103364933A (en) * | 2013-07-22 | 2013-10-23 | 中国科学院西安光学精密机械研究所 | Digital cam continuous zooming system |
| CN105988180A (en) * | 2015-02-13 | 2016-10-05 | 信泰光学(深圳)有限公司 | Optical device capable of quick focusing |
| CN105516600A (en) * | 2015-12-31 | 2016-04-20 | 珠海市百爱科技有限公司 | Automatic focusing system and method |
| CN105516600B (en) * | 2015-12-31 | 2019-03-01 | 珠海市百爱科技有限公司 | Atomatic focusing method |
| CN107015422A (en) * | 2017-06-14 | 2017-08-04 | 山东同其智能科技有限公司 | A kind of novel photoelectric automatic focusing device |
| WO2019085535A1 (en) * | 2017-10-31 | 2019-05-09 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Functional device and electronic apparatus |
| US10637974B2 (en) | 2017-10-31 | 2020-04-28 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Functional device, electronic apparatus, and mobile terminal |
| CN109445233B (en) * | 2018-12-28 | 2023-07-14 | 中山联合光电科技股份有限公司 | Anti-shake structure of large-focus long-stroke lens |
| CN109445233A (en) * | 2018-12-28 | 2019-03-08 | 中山联合光电科技股份有限公司 | A kind of Anti-shaking structure of big focal length long stroke camera lens |
| CN110524245A (en) * | 2019-09-29 | 2019-12-03 | 上海热像科技股份有限公司 | A kind of position adjusting mechanism and infreared imaging device |
| CN111479044A (en) * | 2020-04-14 | 2020-07-31 | Oppo广东移动通信有限公司 | Electronic equipment and camera module thereof |
| WO2023231101A1 (en) * | 2022-05-30 | 2023-12-07 | 歌尔光学科技有限公司 | Lens module and electronic apparatus |
| CN116261044A (en) * | 2023-03-17 | 2023-06-13 | 北京拙河科技有限公司 | Intelligent focusing method and device for hundred million-level cameras |
| CN116261044B (en) * | 2023-03-17 | 2024-04-02 | 北京拙河科技有限公司 | Intelligent focusing method and device for hundred million-level cameras |
| CN116055848A (en) * | 2023-03-31 | 2023-05-02 | 成都睿铂科技有限责任公司 | Active focal plane focusing method, camera and aerial camera |
| CN116055848B (en) * | 2023-03-31 | 2023-06-13 | 成都睿铂科技有限责任公司 | Active focal plane focusing method, camera and aerial camera |
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Open date: 20101208 |