CN101056360A - Zooming camera module of the hand-held action device - Google Patents
Zooming camera module of the hand-held action device Download PDFInfo
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- CN101056360A CN101056360A CN 200610073626 CN200610073626A CN101056360A CN 101056360 A CN101056360 A CN 101056360A CN 200610073626 CN200610073626 CN 200610073626 CN 200610073626 A CN200610073626 A CN 200610073626A CN 101056360 A CN101056360 A CN 101056360A
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Abstract
The present invention relates to a focus-variable photographic module of a hand held action device, which is used for resolving the problem of oversize volume in the technology in existence and comprises a focus-variable module, an automatic focusing module and an image sensor set below the automatic focusing module. Said focus-variable module comprises a first drawtube and at least one liquid lens fixed inside the first drawtube; said automatic focusing module comprises a second drawtube locating at bottom of the first drawtube, a lens group fixed inside the second drawtube and an actuator mounted at at bottom of the first drawtube. Said lens group comprises at least one aspheric surface lens or molding glass lens (glass lens with a surface curvature being any combination of spherical surface and aspheric surface) and is used for receiving images which have passed through the liquid lens and correcting aberrations and dispersions. Said actuator is used for driving the second drawtube in the direction of optical axis to adjust the image focal length.
Description
Technical field
The present invention relates to a kind of Zooming camera module of hand-held action device, it comprises the camera module of being made up of liquid lens and lens set, has the function of zoom and focusing simultaneously, and is applicable to hand-held action device.
Background technology
Because the fast development of electronic technology, many hand-held action devices have possessed camera function, and camera module all develops to miniaturization.For the volume that reaches zoom function and dwindle camera module, technology is all utilized the camera lens of three groups of formula lens set to cooperate and is moved the purpose that lens set middle and the back group reaches zoom and focusing at present.Yet this kind structure is for hand-held action device, for example mobile phone, PDA (personal digital assistant) ... Deng, volume is too huge.Therefore prior art has the invention of liquid lens.
The patent relevant with liquid lens please refer to the U.S. Patent number US 6,369 that is announced on April 9th, 2002, " camera lens of tool different focal " of 954B1 (also being PCTNo.WO 99/18456); Be disclosed in the U.S. Patent Publication No. US 2005/0002113A1 on January 6th, 2005 " droplet congregating device ", it is the application of Varioptic company; And " Varifocal zoom lens " that be disclosed in the U.S. Patent Publication No. US 2005/0113912A1 on May 26th, 2005, it is the application of Philips company.
The liquid lens of above-mentioned prior art all is that fused (non-miscible) and liquid with different refractivity are packed in the middle of the transparent column shape container mutually with two kinds, and apply the polarity that voltage changes two kinds of liquid in the container, change the curvature of interface between liquid by capillary variation, to reach the purpose of deviation light.Here be that example is described as follows with U.S. Patent Publication No. US 2005/0113912 A1.
See also Fig. 1 and Fig. 2, it is the generalized section according to the Varifocal zoom lens of U.S. Patent Publication No. US 2005/0113912 A1.This Varifocal zoom lens includes first an electrode 2a cylindraceous, and it forms a capillary body, and is sealed (4a, 6a are generally optical glass) by a transparent front element 4a and a back element 6a, to form a liquid room 5a.This liquid room 5a is equipped with two kinds of non-miscible liquid A and B.Liquid A is non-conductive liquid, for example silicone oil; Liquid B is a conducting liquid, for example contains the water of salting liquid.This first electrode 2a is made and is coated with an insulating barrier 8a by metal material, this insulating barrier 8a is coated with liquid contact layer 10a, for example a Teflon.Aforesaid liquid contact layer 10a is the male and fomale(M﹠F) (meniscus) that is used for reducing liquid, and promptly the liquid curved surface 14, with the hysteresis (hysteresis) of the cylindric wall contact angle of liquid room.One second electrode 12a is located at the end of this liquid room 5a and arranges at least a portion to be positioned at this liquid room 5a, makes this second electrode 12a act on liquid B by this.
When applying different voltage V1 and V2 between the first electrode 2a and the second electrode 12a time, can change the liquid curved surface 14 of aforesaid liquid B, change the refraction angle of light by this and form different focal lengths.
Yet the aforesaid liquid camera lens has the shortcoming of spherical aberration, and the switching between the different focal position is rather consuming time, that is accurately between controlling liquid the curvature changing of interface need expend considerable time to the numerical value that optical computing obtains.And, if the function of utilizing a plurality of liquid lens to reach optical zoom and focus automatically simultaneously, therefore the needed time can be longer, if the camera lens module that utilizes the aforesaid liquid camera lens to be used as having zoom and automatic focus function merely, still has many imperfection parts and need be overcome.
Therefore, the present invention proposes a kind of reasonable in design and effectively improve the Zooming camera module of the hand-held action device of above-mentioned defective.
Summary of the invention
Main purpose of the present invention provides a kind of Zooming camera module of hand-held action device, and not only volume is little and be applicable to hand-held action device for it, and with the zoom and the function of focusing automatically.
Another object of the present invention provides a kind of Zooming camera module of hand-held action device, and its driving element of integrating camera module is simplified overall structure and saved cost, and can further shorten the time of zoom and focusing.
To achieve the above object, the invention provides a kind of Zooming camera module of hand-held action device, comprise a zoom modules, an automatic Focusing module and an image sensor.This zoom modules has: one first lens barrel and at least one liquid lens, described at least one liquid lens is fixed in this first lens barrel.This automatic Focusing module has: one second lens barrel, it is positioned at this first lens barrel bottom, one lens set is fixed in this second lens barrel inside, and in order to receive image and correction aberration and the chromatic dispersion through this liquid lens, this lens set includes at least one aspherical lens or molded glass eyeglass; And an actuator, it is arranged at the bottom of this first lens barrel and drives this second lens barrel to adjust above-mentioned image focal length along optical axis direction.This image sensor is arranged at the bottom of this second lens barrel, to receive above-mentioned image and above-mentioned video conversion is become electronic signal.
In order to reach another above-mentioned purpose, the Zooming camera module of hand-held action device of the present invention also comprises a chip for driving, in order to drive the action that liquid in this liquid lens changes the curvature of its interface and controls this actuator.In addition, be provided with an inquiry table of comparisons in this chip for driving, this inquiry table of comparisons provides the optical zoom multiplying power to correspond to the curvature of liquid interface in this liquid lens.
Compare with liquid lens or traditional zoom camera lens with three groups of lens set, the present invention utilizes liquid lens to reduce the volume of camera module and reaches the function of zoom, it is provided with aberration and the chromatic dispersion that is produced when a lens set is revised the liquid lens imaging in addition, further utilizes actuator to move above-mentioned lens set the image through this liquid lens is adjusted the purpose that focal length reaches sharp image.Moreover the driving element of the camera module after the integration has not only been simplified overall structure and has been provided cost savings, and has further shortened the time of zoom and focusing in addition.
Conjunction with figs. is described in detail as follows preferred embodiment of the present invention now, but these explanations only are to be used for illustrating the present invention, and is not that protection scope of the present invention is carried out any restriction.
Description of drawings
Fig. 1: be generalized section according to the Varifocal zoom lens of U.S. Patent Publication No. US 2005/0113912 A1.
Fig. 2: be generalized section according to another state of Varifocal zoom lens of U.S. Patent Publication No. US 2005/0113912 A1.
Fig. 3: be the cutaway view of the Zooming camera module of hand-held action device of the present invention.
Fig. 4: the cross-sectional schematic that is arranged at a hand held device for Zooming camera module of the present invention.
Wherein, description of reference numerals is as follows:
The 2a first electrode 4a front element
5a liquid room 6a back element
8a insulating barrier 10a liquid contact layer
14 liquid curved surfaces
A liquid B liquid
1 Zooming camera module
2 zoom modules
20 first lens barrels, 21,22 liquid lens
3 automatic Focusing modules
31 actuators, 32 second lens barrels
33,34 eyeglasses
4 image sensors
5 circuit boards, 52 chip for driving
6 reflecting elements
100 hand held devices, 102 windows
L light
Embodiment
See also Fig. 3, it is the cutaway view of the Zooming camera module of hand-held action device of the present invention.The invention provides a kind of Zooming camera module 1 of hand-held action device, it comprises a zoom modules 2, one an automatic Focusing module 3 and an image sensor 4, and this image sensor 4 is arranged at the below of automatic Focusing module 3 to receive image and the video conversion that receives is become electronic signal.For fixing Zooming camera module 1 of the present invention, be typically provided with a housing (not shown), with ccontaining and fixing above-mentioned all elements.
Above-mentioned zoom modules 2 mainly utilizes liquid lens to realize, it comprises one first lens barrel 20 and at least one liquid lens, and described at least one liquid lens is fixed in this first lens barrel 20.This zoom modules 2 has two liquid lens 21 and 22 in the present embodiment, can reach bigger zooming range by this.Because the principle of liquid lens has been previously described, therefore here do not give unnecessary details.
Above-mentioned automatic Focusing module 3 mainly is to utilize movably lens set, at carrying out the focal length adjustment through the image of this zoom modules 2 and revising differing that this zoom modules 2 produced.This automatic Focusing module 3 comprises: one second lens barrel 32, and it is positioned at this first lens barrel, 20 bottoms; And an actuator 31, it is arranged at the bottom of this first lens barrel 20 and drives this second lens barrel 32 along optical axis direction.The aberration and the chromatic dispersion that are produced when wherein these second lens barrel, 32 internal fixation have a lens set to revise liquid lens 21 and 22 imagings to improve, in addition, the distance that this actuator 31 can move this lens set and above-mentioned zoom modules 2 along optical axis direction reaches the purpose of blur-free imaging to carry out the optics focusing.
More particularly, this lens set is made up of two eyeglasses 33 and 34 in the present embodiment, for example can comprise a spheric glass and an aspherical lens, perhaps two aspherical lens, this lens set also can be molded glass (Molding Glass) eyeglass certainly.Improve the quality of image effectively by these lens set.
Aforesaid liquid camera lens 21,22 and this actuator 31 all need the external circuit (not shown) and drive integrated circult comes the curvature changing of liquid interface and moving of this actuator 31 in the difference controlling liquid camera lens.In the present embodiment, this image sensor 4 is arranged on the circuit board 5.
Above-mentioned actuator 31 can be stepper motor (stepping motor), voice coil motor (voice coilmotor) or piezoelectric type motor (piezo motor), and wherein the piezoelectric type motor is a preferable selection.The piezoelectric type motor drives with the low current high voltage, and it has the little advantage of power consumption on the one hand, and the characteristic of its high voltage drive and liquid lens are close on the other hand, therefore can be incorporated on the same chip for driving with liquid lens 21 and 22.
In other words, the present invention has one and is characterised in that, this circuit board 5 is provided with a chip for driving 52 of integrating, be integrated with the circuit that drives this actuator in this chip for driving 52, the action that it not only can be used to drive the curvature of liquid interface in this liquid lens 21,22 and can be used to control this actuator 31.
In addition, chip for driving 52 of the present invention is utilized the curvature changing of liquid interface in (look up table) the algorithm controls liquid lens of tabling look-up, to realize the control of optical zoom multiplying power.That is the present invention stores an inquiry table of comparisons in advance in this chip for driving, and this inquiry table of comparisons provides the optical zoom multiplying power to correspond to the curvature of the interior liquid interface of this liquid lens.Again at length, the curvature of a certain specific liquid interface is to correspond to a certain fixing optical zoom multiplying power, and the curvature of the liquid interface that another is specific is again to correspond to another fixing optical zoom multiplying power, and both sides relation is one to one.Therefore the present invention ties up to both corresponding passes in the table of comparisons in advance and lists one by one, and stores in advance, by this can be rapidly and reach the purpose of control zoom ratio accurately.Do not need as prior art, will constantly attempt leveling off to right value by control loop.
Wherein above-mentioned image sensor 4 is arranged at the bottom of this second lens barrel 32 to receive image and to convert electronic signal to.This image sensor 4 can be complementary metal oxide semiconductors (CMOS) (CMOS, Complementary Metal Oxide Semiconductor), or charge coupled device (CCD, Charge Coupled Device).
Please refer to Fig. 4, it is arranged at the cross-sectional schematic of a hand held device for Zooming camera module of the present invention.Zooming camera module 1 of the present invention can further be provided with a reflecting element 6, and its top that is positioned at this first lens barrel 20 is to form a periscopic Zooming camera module 1.Above-mentioned reflecting element 6 can be a mirror.The optical axis direction of this Zooming camera module 1 can be changed into the direction that is parallel to hand held device 100 by this reflecting element 6, light L enters this Zooming camera module 1 through a window 102 and behind these reflecting element 6 bendings 90 degree earlier.The advantage of this embodiment is to avoid increasing the thickness of hand held device.
(feature of the present invention and characteristics)
Details are as follows for characteristics that the present invention had and function:
One, the Zooming camera module of hand-held action device of the present invention utilizes liquid lens effectively to dwindle overall volume and is applicable to hand-held action device, and utilizes actuator to move a lens set, and reaches with the zoom and the function of focusing automatically.
Two, the Zooming camera module of hand-held action device of the present invention is incorporated on the chip for driving driving element of camera module to simplify overall structure and to save cost.
Three, the Zooming camera module of hand-held action device of the present invention also is provided with an inquiry table of comparisons in chip for driving, and the curvature changing of liquid interface in the controlling liquid camera lens by this is to reach the purpose of accelerating zoom.
Four, the automatic focusing camera module of hand-held action device of the present invention also has the function of fine setting focusing, with the focusing compensation as optical zoom.
Five, the Zooming camera module of hand-held action device of the present invention also is provided with a reflecting element, and it can change the direction that light is advanced, and this camera module is arranged in the hand-held action device and can not increases the thickness of hand-held action device.
The above content that discloses is preferred embodiment of the present invention only, and can not limits protection scope of the present invention with this, and therefore the equivalence of doing according to protection scope of the present invention changes or modifies, and all belongs to the scope that the present invention is contained.
Claims (10)
1, a kind of Zooming camera module of hand-held action device is characterized in that, comprising:
One zoom modules has: one first lens barrel and at least one liquid lens, wherein said at least one liquid lens are fixed in this first lens barrel;
One automatic Focusing module has: one second lens barrel, and it is positioned at this first lens barrel bottom, and a lens set is fixed in this second lens barrel inside; And an actuator, it is arranged at the bottom of this first lens barrel and drives this second lens barrel along optical axis direction; And
One image sensor, it is arranged at the bottom of this automatic Focusing module, to receive image and described video conversion is become electronic signal.
2, the Zooming camera module of hand-held action device as claimed in claim 1 is characterized in that, the above-mentioned first lens barrel internal fixation has two liquid lens.
3, the Zooming camera module of hand-held action device as claimed in claim 1 is characterized in that, described Zooming camera module also comprises a chip for driving, in order to control the curvature of liquid interface in this liquid lens.
4, the Zooming camera module of hand-held action device as claimed in claim 3 is characterized in that, is provided with an inquiry table of comparisons in the above-mentioned chip for driving, and this inquiry table of comparisons provides the optical zoom multiplying power to correspond to the curvature of liquid interface in this liquid lens.
5, the Zooming camera module of hand-held action device as claimed in claim 3 is characterized in that, is integrated with the circuit that drives this actuator in the above-mentioned chip for driving, to control moving of this actuator.
6, the Zooming camera module of hand-held action device as claimed in claim 1 is characterized in that, above-mentioned actuator is a piezoelectric type motor.
7, the Zooming camera module of hand-held action device as claimed in claim 1 is characterized in that, this lens set of above-mentioned second lens barrel comprises a slice aspherical lens at least.
8, the Zooming camera module of hand-held action device as claimed in claim 1, wherein this lens set of this second lens barrel includes a slice spheric glass and a slice aspherical lens.
9, the Zooming camera module of hand-held action device as claimed in claim 1 is characterized in that, this lens set of above-mentioned second lens barrel comprises a slice molded glass eyeglass at least.
10, the Zooming camera module of hand-held action device as claimed in claim 1 is characterized in that, described Zooming camera module also includes a reflecting element, and its top of being located at this first lens barrel is to form a periscopic Zooming camera module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610073626 CN101056360A (en) | 2006-04-13 | 2006-04-13 | Zooming camera module of the hand-held action device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610073626 CN101056360A (en) | 2006-04-13 | 2006-04-13 | Zooming camera module of the hand-held action device |
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| CN101056360A true CN101056360A (en) | 2007-10-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200610073626 Pending CN101056360A (en) | 2006-04-13 | 2006-04-13 | Zooming camera module of the hand-held action device |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7831139B2 (en) | 2008-01-28 | 2010-11-09 | Hon Hai Precision Industry Co., Ltd. | Camera module with lens carrying structure using electrostatic driving unit |
| CN104104850A (en) * | 2014-07-02 | 2014-10-15 | 格科微电子（上海）有限公司 | Imaging module group equipped with voice coil motor and calibration method thereof |
| CN103268050B (en) * | 2008-03-13 | 2016-03-02 | 奥林巴斯株式会社 | Electronic equipment |
| CN107241545A (en) * | 2016-03-29 | 2017-10-10 | 齐发光电股份有限公司 | Focusing method and focusing mechanism |
| CN107300757A (en) * | 2017-08-07 | 2017-10-27 | 惠州璀璨光影技术有限公司 | A kind of basic lenses |
| CN109089024A (en) * | 2018-08-03 | 2018-12-25 | 信利光电股份有限公司 | It is a kind of can microshot camera module |
| WO2020119283A1 (en) * | 2018-12-13 | 2020-06-18 | 宁波舜宇光电信息有限公司 | Photographing module having liquid lens and image surface correcting method therefor |
| CN113031246A (en) * | 2021-02-24 | 2021-06-25 | 上海酷聚科技有限公司 | External lens assembly of handheld device |
| CN113167986A (en) * | 2019-02-25 | 2021-07-23 | 核心光电有限公司 | Multi-aperture camera with at least two-state zoom |
| CN114077028A (en) * | 2020-08-21 | 2022-02-22 | 宁波舜宇光电信息有限公司 | Vertical zoom module and corresponding shooting method |
-
2006
- 2006-04-13 CN CN 200610073626 patent/CN101056360A/en active Pending
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101498823B (en) * | 2008-01-28 | 2011-03-30 | 鸿富锦精密工业（深圳）有限公司 | Camera module group |
| US7831139B2 (en) | 2008-01-28 | 2010-11-09 | Hon Hai Precision Industry Co., Ltd. | Camera module with lens carrying structure using electrostatic driving unit |
| CN103268050B (en) * | 2008-03-13 | 2016-03-02 | 奥林巴斯株式会社 | Electronic equipment |
| CN104104850A (en) * | 2014-07-02 | 2014-10-15 | 格科微电子（上海）有限公司 | Imaging module group equipped with voice coil motor and calibration method thereof |
| CN107241545A (en) * | 2016-03-29 | 2017-10-10 | 齐发光电股份有限公司 | Focusing method and focusing mechanism |
| CN107300757B (en) * | 2017-08-07 | 2023-10-31 | 惠州璀璨光影技术有限公司 | Special effect lens |
| CN107300757A (en) * | 2017-08-07 | 2017-10-27 | 惠州璀璨光影技术有限公司 | A kind of basic lenses |
| CN109089024A (en) * | 2018-08-03 | 2018-12-25 | 信利光电股份有限公司 | It is a kind of can microshot camera module |
| CN111323902A (en) * | 2018-12-13 | 2020-06-23 | 宁波舜宇光电信息有限公司 | Camera module with liquid lens and image surface correction method thereof |
| WO2020119283A1 (en) * | 2018-12-13 | 2020-06-18 | 宁波舜宇光电信息有限公司 | Photographing module having liquid lens and image surface correcting method therefor |
| CN113167986A (en) * | 2019-02-25 | 2021-07-23 | 核心光电有限公司 | Multi-aperture camera with at least two-state zoom |
| CN113167986B (en) * | 2019-02-25 | 2023-09-01 | 核心光电有限公司 | Multi-aperture camera with at least one two-state zoom camera |
| CN114077028A (en) * | 2020-08-21 | 2022-02-22 | 宁波舜宇光电信息有限公司 | Vertical zoom module and corresponding shooting method |
| CN113031246A (en) * | 2021-02-24 | 2021-06-25 | 上海酷聚科技有限公司 | External lens assembly of handheld device |
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