CN101140349A - Camera module group - Google Patents
Camera module group Download PDFInfo
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- CN101140349A CN101140349A CNA200610200847XA CN200610200847A CN101140349A CN 101140349 A CN101140349 A CN 101140349A CN A200610200847X A CNA200610200847X A CN A200610200847XA CN 200610200847 A CN200610200847 A CN 200610200847A CN 101140349 A CN101140349 A CN 101140349A
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- camera module
- distance measuring
- lens barrel
- microscope base
- lens
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- Measurement Of Optical Distance (AREA)
Abstract
The present invention provides a camera module, which comprises a lens holder, a lens tube positioned in the lens holder, a lens module in the lens tube, a photosensitive element towards the lens module and a drive mechanism to drive the lens tubes to move in the lens holder. The present invention is characterized in that: The camera module is additionally composed of a distance measuring instrument in the lens holder to measure a distance between an image space focus and a photosensitive plane of the photosensitive element and convert the distance into that of objects to be photographed during focusing and imaging these objects. Due to the distance measuring instrument, the camera module of the present invention is provided with a function of object distance measuring and will not influence camera module size, maintenance difficulty, power consumption and photograph effect.
Description
Technical field
The present invention relates to camera technique, particularly a kind of camera module.
Background technology
The camera module can the records photographing thing appearance and color, be widely used in life and produce in every field.But, except the appearance and color of wanting the records photographing thing, also need the distance (be object distance) of records photographing object distance from the spot for photography some occasion (measuring) as building.And traditional camera module does not provide the function of this measurement object distance, and people must utilize other outside measuring tool to carry out range observation.
Subsequently, people are attached to the distance measuring device on the filming apparatus, a kind of " ranging type digital camera " occurred.Described ranging type digital camera comprises that a digital camera body and is attached to the laser range finder of digital camera outside.Described laser range finder is electrically connected with the storage unit of described digital camera, measurement result can be deposited in described storage unit.Described laser range finder comprises a generating laser and a receiver, described generating laser emission laser is beaten and is being taken on the thing, returns described receiver, the flight time of Laser Measurement (Time Of Flight after taking the thing reflection, TOF), and with the TOF value be scaled object distance.
Yet this ranging type digital camera has the following disadvantages: (1) laser range finder is attached to the volume that the digital camera outside will increase digital camera, and is opposing with the trend of miniaturization of electronic products; (2) optical element of laser range finder is exposed outside, and cover dirt easily or suffer other optical pollutions, the maintenance difficulty, serviceable life is not long; (3) the long distance ranging of laser range finder, consumed power is big, is mainly considering a little of present design of electronic products and reduce amount of power consumption with the service time that prolongs the limited reserve of electricity of electronic product; (4) laser of laser range finder is beaten on the shooting thing influences shooting effect.
In view of this, be necessary to provide a kind of camera module that overcomes the above problems and have measurement object distance function.
Summary of the invention
Fundamental purpose of the present invention provides a kind of camera module of measuring the object distance function that has that solves the prior art problem.
For realizing described purpose, the invention provides a kind of camera module, described camera module comprises that a microscope base, is arranged at lens barrel, in the described microscope base and is contained in photo-sensitive cell and that lens set in the described lens barrel, is oppositely arranged with described lens set and is used to drive described lens barrel mobile driving mechanism in described microscope base.It is characterized in that: described camera module comprises that also one is arranged at the distance measuring equipment in the described microscope base, and the picture side's principal point that is used to measure described lens set is to the distance value on the sensitization plane of described photo-sensitive cell and described distance value is converted into the object distance value of shooting thing when taking thing focusing imaging.
Because distance measuring equipment of the present invention is arranged in the microscope base, does not account for space outerpace and has avoided outside optical pollution; The photocentre of described distance measuring equipment by measuring lens set is scaled object distance to the distance value on the sensitization plane of described photo-sensitive cell, belongs to the short distance measurement mechanism, can adopt the low-power consumption product, the attenuating power consumption; The shooting effect of shooting thing is not avoided so influenced to described measurement mechanism to taking thing emission laser.To sum up, camera module of the present invention solves the technical matters that prior art produces again when realizing records photographing thing object distance.
Description of drawings
Fig. 1 is the perspective exploded view of the camera module of preferred embodiment of the present invention;
Fig. 2 is that the solid after the camera module of Fig. 1 is assembled is analysed synoptic diagram;
Fig. 3 is the structural representation of the distance measuring equipment among Fig. 1.
Embodiment
Please consult Fig. 1 and Fig. 2 simultaneously, the camera module 100 of present embodiment comprises that a microscope base 10, is arranged at lens barrels 20, in the described microscope base 10 and is contained in photo-sensitive cell 40, that lens set 30 in the described lens barrel 20, is oppositely arranged with described lens set 30 and is used to drive described lens barrel 20 mobile driving mechanism 50, in described microscope base 10 and is arranged at distance measuring equipment 60 in the described microscope base 10.The picture side principal point H ' (when taking thing focusing imaging, being image distance as square principal point to the distance on sensitization plane) that described distance measuring equipment 60 is used to measure described lens set 30 is to the distance value U on the sensitization plane of described photo-sensitive cell 40 and described distance value U is converted into the object distance value of shooting thing when taking thing and focus imaging.
In the present embodiment, described microscope base 10 is installed on the circuit board 70.Described microscope base 10 and lens barrel 20 all are circular sleeve, and described microscope base 10 is sheathed on described lens barrel 20 and forms a cavity 101.Described lens set 30 can adopt spherical lens also can adopt non-spherical lens, considers that the image quality of non-spherical lens is better than the spherical mirror lens, and present embodiment adopts non-spherical lens.Described photo-sensitive cell 40 is installed in the described cavity 101, described photo-sensitive cell 40 can adopt egative film, charge-coupled device (Charged CoupledDevice, CCD) image sensor or complementarity metal semiconductor (Complementary Metal-OxideSemiconductor, CMOS) image sensor, consider price and image quality factor, present embodiment adopts the CMOS image sensor.
The driving mechanism 50 of present embodiment comprises that one is arranged at cylinders 501, in the described microscope base 10 and is used to drive step motor 502, that described cylinder 501 rotates and extends in the cam pin 201 and of described lens barrel 20 lateral walls and be used to the limiting structure 503 that prevents that described lens barrel from rotating with described cam pin.Described cylinder 501 length directions are perpendicular to the sensitization plane of described photo-sensitive cell 40, and its sidewall offers the spiral helicine cam path 504 that matches with described cam pin 201.Described limiting structure 503 comprises that the guidance part 202 and of being located at described lens barrel is located at the limited section 102 of described microscope base.In the present embodiment, described guidance part 202 is at least one section groove that is opened in described microscope base 10 madial walls at least one extending in the guide pins limited section 102 of described lens barrel 20, and the guide pins of present embodiment and the number of groove all are one.The length direction of described groove is parallel to the optical axis of described lens set 30.
During work, described step motor 502 drives described cylinder 501 and rotates, and is opened in cam path 504 on the cylinder 501 and drive is arranged at the cam pin 201 that extends in lens barrel 20 moves up and down, and lens barrel 20 moves up and down with cam pin 201.Described limiting structure 503 has two effects: (1) limits the radially degree of freedom that prevents described lens barrel 20, prevents that described lens barrel 20 from rotating with cam pin 201; (2) the described lens barrel 20 of guiding moves along the optical axis direction of described lens set.
Be appreciated that described limiting structure also can adopt other structures, as extend in as described in lens barrel 20 lateral walls and offer the fin of through hole and limit cooperating of bar, through hole is sheathed on the qualification bar, can realize limiting the function of described lens barrel 20 direction of motion equally.
Be appreciated that driving mechanism also is not limited to above-mentioned embodiment, can adopt other driving mechanism, as voice coil motor
A signal feedback device 602 and a signal processing unit 603 that is electrically connected with described distance measuring sensor that described distance measuring equipment 60 comprises that a distance measuring sensor 601, that is attached to described lens barrel 20 lateral walls is attached on the described microscope base 10 and is oppositely arranged with described photoelectric sensor 601.Described distance measuring sensor 601 is used for transmitting and accepting the signal that described signal feedback device 602 feeds back to described signal feedback device 602.
During measurement, described distance measuring sensor 601 emission measurement signals, after described signal reflectors 602 feedbacks, return described distance measuring sensor 601, handle the distance D that just can obtain between described distance measuring sensor 601 and the described signal feedback device 602 by described signal processing unit 603.In the present embodiment, by described lens barrel 20 is set, making when described distance measuring sensor 601 joins with described signal feedback device 602 (D=0), is a given value U apart from U
0(figure is expression not) then has U=U
0-D.In described signal processing unit 603 default conversion programs, then record distance D and after described signal processing unit 603 is handled, can obtain distance value U, thereby realize the purpose of measuring distance value U.
When the distance measuring sensor 601 that is appreciated that described distance measuring equipment 60 and signal feedback device 602 are done other and are provided with, equally can by relation push away distance D and relation apart from U.
Be appreciated that and described range finding sensor 601 can be attached to described microscope base 10, and described signal feedback device 602 is attached to described lens barrel 20 lateral walls, can realize the purpose of measuring distance value U equally.
See also Fig. 3, be the structural representation of the distance measuring equipment 60 of present embodiment.In the present embodiment, described distance measuring sensor 601 is a photoelectric sensor, and it comprises an optical transmitting set 604 and an optical receiver 605 that matches with described optical transmitting set.Described signal feedback device 602 is a catoptron.Described optical transmitting set 604 comprises a light source 606 and a diversing lens 607.Described light source 606 can adopt light emitting diode or laser diode, and present embodiment adopts light emitting diode, and it is low in energy consumption, and luminous power is stable.Described optical receiver 605 comprises a diaphragm 608 and a light activated element 609 successively along optical path direction, and described light activated element 609 can adopt photoresistance, photodiode or phototriode, and present embodiment adopts phototriode, and it is highly sensitive, the resolution height.Described catoptron can adopt aluminum coating catoptron or silver coating catoptron, and present embodiment adopts the aluminum coating catoptron, and its reflectivity height is avoided power wastage, and had cost advantage with respect to the silver coating transmitting mirror.
There is corresponding relation in the emitter current of described phototriode projects self with it light quantity, and project described photosensitive light quantity and there is corresponding relation in distance D, so described signal processing unit 603 can obtain distance D by the emitter current of measuring phototriode, thereby reach the purpose of measuring distance value U, and when taking thing focusing imaging, distance value U is scaled the object distance of taking thing by imaging formula.
Certainly, described distance measuring equipment is not limited to the foregoing description, can adopt other short distance measurement mechanisms, as semiconductor laser range of triangle device.
In addition, those skilled in the art also can do other variation in spirit of the present invention.The variation that these are done according to spirit of the present invention all should be included within the present invention's scope required for protection.
Claims (10)
1. camera module comprises that a microscope base, is arranged at lens barrel, in the described microscope base and is contained in photo-sensitive cell and that lens set in the described lens barrel, is oppositely arranged with described lens set and is used to drive described lens barrel mobile driving mechanism in described microscope base; It is characterized in that: described camera module comprises that also one is arranged at the distance measuring equipment in the described microscope base, and the picture side's principal point that is used to measure described lens set is to the distance value on the sensitization plane of described photo-sensitive cell and described distance value is converted into the object distance value of shooting thing when taking thing focusing imaging.
2. camera module as claimed in claim 1 is characterized in that: a signal feedback device and a signal processing unit that is electrically connected with described distance measuring sensor that described distance measuring equipment comprises that a distance measuring sensor, that is attached to described lens barrel lateral wall is attached on the described microscope base and is oppositely arranged with described distance measuring sensor; Described distance measuring sensor is used for transmitting and accepting the signal that described signal feedback device feeds back to described signal feedback device.
3. camera module as claimed in claim 2 is characterized in that: described distance measuring sensor is a photoelectric sensor, and it comprises an optical transmitting set and an optical receiver that matches with described optical transmitting set; Described signal feedback device is a catoptron.
4. camera module as claimed in claim 3 is characterized in that: described optical transmitting set comprises that a light source and is used for the diversing lens of optically focused; Described optical receiver comprises a diaphragm and a light activated element successively along light path.
5. camera module as claimed in claim 4 is characterized in that: described light source comprises light emitting diode or laser diode.
6. camera module as claimed in claim 4 is characterized in that: described light activated element comprises photoresistance, photodiode or phototriode.
7. camera module as claimed in claim 2 is characterized in that: described catoptron comprises aluminum coating catoptron or silver coating catoptron.
8. camera module as claimed in claim 1 is characterized in that: described driving mechanism comprises that one is arranged at cylinder, in the described microscope base and is used to drive step motor, that described cylinder rotates and extends in the cam pin and of described lens barrel lateral wall and be used to the limiting structure that prevents that described lens barrel from rotating with described cam pin; Described cylinder length direction is perpendicular to the sensitization plane of described photo-sensitive cell, and its sidewall offers the spiral helicine cam path that matches with described cam pin.
9. camera module as claimed in claim 8 is characterized in that: described limiting structure comprises that the guidance part and of being located at described lens barrel is located at the limited section of described microscope base.
10. camera module as claimed in claim 9 is characterized in that: described guidance part comprises at least one fin and at least one section groove that is opened in described microscope base madial wall that extends in the lens barrel lateral wall; Described groove length direction is parallel to the optical axis of described lens set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610200847A CN100592127C (en) | 2006-09-06 | 2006-09-06 | Camera module group |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610200847A CN100592127C (en) | 2006-09-06 | 2006-09-06 | Camera module group |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101140349A true CN101140349A (en) | 2008-03-12 |
| CN100592127C CN100592127C (en) | 2010-02-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200610200847A Expired - Fee Related CN100592127C (en) | 2006-09-06 | 2006-09-06 | Camera module group |
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| Country | Link |
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| CN (1) | CN100592127C (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104270556A (en) * | 2014-10-08 | 2015-01-07 | 信利光电股份有限公司 | Camera module |
| CN104284066A (en) * | 2014-10-08 | 2015-01-14 | 信利光电股份有限公司 | Camera shooting module with inclination of lens adjustable |
| WO2016062083A1 (en) * | 2014-10-24 | 2016-04-28 | 中兴通讯股份有限公司 | Focusing method, device and terminal |
| CN105578053A (en) * | 2015-12-29 | 2016-05-11 | 广东欧珀移动通信有限公司 | Automatic focusing method, automatic focusing device, selfie stick, mobile terminal and self-timer system |
| CN111279212A (en) * | 2019-01-09 | 2020-06-12 | 深圳市大疆创新科技有限公司 | Scanning module, distance measuring device and mobile platform |
| WO2021092846A1 (en) * | 2019-11-14 | 2021-05-20 | 深圳市大疆创新科技有限公司 | Zoom tracking method and system, lens, imaging apparatus and unmanned aerial vehicle |
| CN113286024A (en) * | 2021-05-20 | 2021-08-20 | 维沃移动通信有限公司 | Electronic device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6091905A (en) * | 1995-06-22 | 2000-07-18 | 3Dv Systems, Ltd | Telecentric 3D camera and method |
| JP2000330001A (en) * | 1999-05-20 | 2000-11-30 | Olympus Optical Co Ltd | Range finder |
| JP2001147465A (en) * | 1999-11-18 | 2001-05-29 | Canon Inc | Camera |
| JP2001324665A (en) * | 2000-05-15 | 2001-11-22 | Olympus Optical Co Ltd | Auto-focusing device for camera |
| TWI233481B (en) * | 2004-01-30 | 2005-06-01 | Asia Optical Co Inc | Laser range finder |
-
2006
- 2006-09-06 CN CN200610200847A patent/CN100592127C/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104270556A (en) * | 2014-10-08 | 2015-01-07 | 信利光电股份有限公司 | Camera module |
| CN104284066A (en) * | 2014-10-08 | 2015-01-14 | 信利光电股份有限公司 | Camera shooting module with inclination of lens adjustable |
| CN104284066B (en) * | 2014-10-08 | 2018-03-30 | 信利光电股份有限公司 | The camera module of adjustable mirror head tilt degree |
| WO2016062083A1 (en) * | 2014-10-24 | 2016-04-28 | 中兴通讯股份有限公司 | Focusing method, device and terminal |
| CN105578053A (en) * | 2015-12-29 | 2016-05-11 | 广东欧珀移动通信有限公司 | Automatic focusing method, automatic focusing device, selfie stick, mobile terminal and self-timer system |
| CN111279212A (en) * | 2019-01-09 | 2020-06-12 | 深圳市大疆创新科技有限公司 | Scanning module, distance measuring device and mobile platform |
| WO2020142966A1 (en) * | 2019-01-09 | 2020-07-16 | 深圳市大疆创新科技有限公司 | Scanning module, ranging device and mobile platform |
| CN111279212B (en) * | 2019-01-09 | 2024-02-13 | 深圳市大疆创新科技有限公司 | Scanning module, range unit and mobile platform |
| WO2021092846A1 (en) * | 2019-11-14 | 2021-05-20 | 深圳市大疆创新科技有限公司 | Zoom tracking method and system, lens, imaging apparatus and unmanned aerial vehicle |
| CN113286024A (en) * | 2021-05-20 | 2021-08-20 | 维沃移动通信有限公司 | Electronic device |
| CN113286024B (en) * | 2021-05-20 | 2024-01-30 | 维沃移动通信有限公司 | Electronic equipment |
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| Publication number | Publication date |
|---|---|
| CN100592127C (en) | 2010-02-24 |
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Granted publication date: 20100224 Termination date: 20170906 |