CN101017310A - Automatically focusing device of digital camera - Google Patents
Automatically focusing device of digital camera Download PDFInfo
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- CN101017310A CN101017310A CN 200610033586 CN200610033586A CN101017310A CN 101017310 A CN101017310 A CN 101017310A CN 200610033586 CN200610033586 CN 200610033586 CN 200610033586 A CN200610033586 A CN 200610033586A CN 101017310 A CN101017310 A CN 101017310A
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- automatic focusing
- focusing mechanism
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Abstract
This invention relates to one digital camera automatic focus device, which comprises one baseboard, one first lens cylinder fixed on the baseboard; one second lens cylinder with one lens head and the second cylinder is fixed inside first lens cylinder; one work lens slice set inside second lens cylinder and one image sensor fixed on baseboard; the work lens set has multiple work lens with different curve rates to rotate inside second lens cylinder; the multiple work lens is for liquid lens to change work lens curve rate through reducing liquid lens.
Description
[technical field]
The present invention relates to a kind of digital camera automatic focusing mechanism, refer to a kind of digital camera automatic focusing mechanism that can apply in the portable electron devices such as mobile phone especially.
[background technology]
Along with the fast development of mechanics of communication, digital camera has been widely used in by people in the portable electric appts such as mobile phone, and numerous cell phone manufacturers release one after another and possess the mobile phone of digital camera.Yet the mobile phone of being sold on the market that possesses digital camera can not carry out continuously focusing automatically in shooting process, has therefore influenced the quality of captured image.
Seeing also Fig. 1, is a kind of digital camera automatic focusing mechanism that prior art provides.This automatic focusing mechanism 10 comprises distance sensing device 11, signal processing unit 12, motor driven chip 13, motor 14 and the lens set 15 that is connected with lead respectively.This distance sensing device 11 is arranged in the observation window 16, when the user watches the image that will take through observation window sight 16, this distance sensing device 11 can be by the infrared ray of emission and acceptance reflection, measure interior crystalline of user's eyeball and cornea variable quantity to observed objects, signal processor detect the information of this variable quantity and handle after transfer to motor driven wafer 13 and drive lens set 15 with CD-ROM drive motor 14, lens set 15 is moved to assigned address, finish automatic focusing.
Because this digital camera automatic focusing mechanism 10 adopts motor 14 to drive lens set 15 to realize automatic focus function, and motor 14 volumes own are more greatly and comparatively heavy, this kind digital camera automatic focusing mechanism 10 is directly applied in the portable electric appts such as mobile phone, with greatly increasing the volume and the weight of mobile phone, have a strong impact on its Portability.And power consumption is very big during motor operations, and the electric energy storage of mobile phone is very limited, thereby will greatly shorten the stand-by time of mobile phone, thereby influences the utilization of its basic function.
[summary of the invention]
In view of this, be necessary to provide a kind of volume little, the digital camera automatic focusing mechanism that can be applied to portable electric appts such as mobile phone low in energy consumption.
A kind of digital camera automatic focusing mechanism, it comprises a substrate, one is fixedly mounted on first lens barrel on the substrate, one has second lens barrel of a camera lens, this second lens barrel is installed in first lens barrel, the one work lens set and that is positioned at second lens barrel is installed in the image sensor on the substrate, and wherein this work lens set has a plurality of working lenses, and these a plurality of working lenses have different curvature respectively.And this work lens set can be rotated in second lens barrel.
A kind of digital camera automatic focusing mechanism, it comprises a camera lens, the central point of one central point and camera lens is positioned at image sensor and at least one work lens set on the straight line, wherein this work lens set has a plurality of working lenses, these a plurality of working lenses have different curvature respectively, and this work lens set is rotatable, and the central point of these a plurality of working lenses is respectively by the central point of image sensor and the determined straight line of central point of camera lens during rotation.
Compared to prior art, described digital camera automatic focusing mechanism, owing to utilize the working lenses of a plurality of different curvature to change the length of its effective focal length to realize focusing and zoom function, and do not need to use motor, therefore can reduce the volume and the weight of digital camera automatic focusing mechanism, be suitable for use in the portable electric appts such as mobile phone.And use working lenses not need consumed power, and therefore less for the electric energy storage influence of portable electric appts such as mobile phone, can not shorten its stand-by time, less to its basic function influence, be suitable for use in the portable electric appts.
[description of drawings]
Fig. 1 is the structural representation of a kind of digital camera automatic focusing mechanism of prior art.
The structural representation of a kind of digital camera automatic focusing mechanism that Fig. 2 provides for the embodiment of the invention.
Fig. 3 is the structural representation of a work lens set among Fig. 2.
[embodiment]
Below in conjunction with accompanying drawing the embodiment of the invention is described in further detail.
See also Fig. 2, be that the embodiment of the invention provides a kind of digital camera automatic focusing mechanism, this digital camera automatic focusing mechanism 100 mainly comprises a substrate 110, one is fixed on first lens barrel 120 on the substrate 110, one second lens barrel 130, one is installed in image sensor 150, one first work lens set 160, the one second work lens set 170 on the substrate 110.This image sensor 150 can adopt CMOS image sensor or CCD image sensor.
This second lens barrel 130 is made up of the right cylinder 132 of circular dull and stereotyped 131 and one inner hollow.The right cylinder 132 of this second lens barrel 130 is installed on first lens barrel 120 to support this second lens barrel 130.Circular dull and stereotyped 131 of this second lens barrel 130 has an opening, and a camera lens 140 is installed in this opening part, and the center position of camera lens 140 is corresponding with the center position of image sensor 150, all is located along the same line.
The right cylinder 132 of this first lens barrel 120 and second lens barrel 130 has a peristome respectively at the same position place, at this peristome one circular gear 1710 with teeth is installed.
The first work lens set 160 is mounted within second lens barrel 130.And this first work lens set 160 is made up of first bracing frame 162 and first working lenses 161.This first bracing frame 162 is fixed this first working lenses 161 and is made its position corresponding with image sensor 150 and camera lens 140, and promptly image sensor 150, and the center of the camera lens 140 and first working lenses 161 in line.This first work eyeglass 161 can be glass lens or plastic cement lens, and these lens can be non-spherical lens.
See also Fig. 3, second work lens set 170 be arranged within second lens barrel 130, and this second work lens set 170 comprise a rotary table 171 and a plurality of second working lenses 172, as 172A, 172B, 172C, 172D and 172E.This rotary table 171 is a circular platform, and its excircle place has teeth.This rotary table 171 is by the teeth engagement of its excircle teeth and gear 1710.By the rotation of this gear 1710, can drive the second work lens set 170 and in second lens barrel 130, be rotated.
This rotary table 171 contains a plurality of holes with certain regular distribution and shape, it corresponds respectively to this a plurality of second work eyeglasses, promptly the second working lenses 172A, 172B, 172C, 172D, 172E all are arranged in the hole of rotary table 171, and the shape of hole and size are corresponding with second working lenses respectively.The curvature of this second working lenses 172A, 172B, 172C, 172D, 172E has nothing in common with each other, and its central point all is positioned on the concentric circles, when rotary table 171 rotations, the central point of this second working lenses 172A, 172B, 172C, 172D, 172E respectively can be by the determined straight line of central point of camera lens 140 and image sensor 150.
This second working lenses 172A, 172B, 172C, 172D, 172E can be common optical lenses, as glass lens or plastic cement lens, and are aspheric surface formula lens.
Preferably, this second work eyeglass 172A, 172B, 172C, 172D, 172E are liquid lens as shown in Figure 3, as oily mirror.Refractive index of this second work eyeglass 172A, 172B, 172C, 172D, 172E is in 1.4 to 2.0 the scope.This second work lens set 170 further comprises a liquid containing layer 173.This liquid containing layer 173 is covered on the rotary table 171, and communicate with the second working lenses 172A, 172B, 172C, 172D, 172E respectively, promptly the liquid in the second work eyeglass can flow to liquid containing layer 173 from lens, or the liquid in the liquid containing layer 173 also can flow to lens.
This digital camera automatic focusing mechanism 100 also further comprises an aperture diaphragm (ApertureStop) 180, and it is arranged on the second work lens set 170.This aperture diaphragm 180 can be controlled the size by light quantity, and this aperture diaphragm 180 can also be controlled light in working order down only by one second working lenses 172 in the second work lens set 170.
This digital camera automatic focusing mechanism 100 can further include an infrared ray cut optical filtering (IR-cut Filter) 190.This infrared ray cut optical filtering 190 is arranged within the barrel 130, and is positioned at the below of the second work lens set, promptly near substrate 110 places.This infrared ray cut optical filtering 190 can stop ultraviolet and infrared light, and visible light is passed through, and avoids because of ultraviolet or infrared light optical-mechanical system and element being produced bad injury.
When these digital camera automatic focusing mechanism 100 work,, by the first work lens set 160 and the second work lens set 170 image is transferred to image sensor 150 imagings then by camera lens 140 picked-up external images.
Because this second work lens set 170 comprises a plurality of second working lenses 172A, 172B, 172C, 172D, 172E, and this second working lenses 172A, 172B, 172C, 172D, 172E have different curvature respectively, so this second working lenses 172A, 172B, 172C, 172D, 172E have different effective focal lengths respectively.When the rotation that utilizes rotary table 171, can select to be fit to some second working lenses of demand as required to carry out work, as 172B.When the image of picked-up changed, another second working lenses that can select to be fit to demand as 172D, dropped on the image sensor 150 focus of its imaging to carry out work.Then this digital camera automatic focusing mechanism 100 can be realized the function that focusing automatically and image amplify (zoom).
Further, utilize the working lenses of liquid lens as the second work lens set 170.When small variation takes place the image of picked-up, and the curvature of all second working lenses is not when all matching this variations, selects curvature to approach to be fit to one second working lenses of this image most, as 172C, with it in running order under.Utilize the surface tension balance on the second working lenses liquid lens 172C and liquid containing layer 173 surface, impel in the second working lenses 172C flow direction liquid containing layer 173 or with the flow direction second working lenses 172C in the liquid containing layer 173, reduce or increase the liquid in the second working lenses 172C so that change fine takes place the curvature of the second working lenses 172C, then correspondingly its effective focal length takes place fine to change, adapt to the subtle change that the picked-up image takes place, realize focusing and zoom function.
Promptly utilize second working lenses of different curvature can realize interior in a big way focusing, and utilize second working lenses to be liquid lens, the curvature that how much fine changes this liquid lens of contained liquid can realize interior among a small circle focusing in the liquid lens by changing.
This second working lenses group 170 utilizes second working lenses under in running order to match with first working lenses in the first working lenses group 160, to adapt to the requirement of this digital camera to resolution and pixel.
Compared to prior art, this digital camera automatic focusing mechanism 100, because the liquid that utilizes the working lenses 172 of a plurality of different curvature and increase or reduce in the liquid lens 172 changes the curvature of this working lenses 172 to realize focusing and zoom function, and do not need to use motor, therefore can reduce the volume and the weight of digital camera automatic focusing mechanism 100, make this automatic focusing mechanism 100 be fit to use in portable electric appts such as mobile phone.And use working lenses 172 not need consumed power, therefore these digital camera automatic focusing mechanism 100 power consumptions are few, electric energy storage influence for portable electric appts such as mobile phones is less, can not shorten its stand-by time, little to its basic function influence, be suitable for use in the portable electric appts.
Similarly, this digital camera automatic focusing mechanism also can only comprise a work lens set, and this work lens set is the second above-mentioned work lens set 170, and does not need to use the first working lenses group, can realize focusing and zoom function.This digital camera automatic focusing mechanism also can comprise a plurality of work lens set, and these a plurality of work lens set comprise that at least one second work lens set with a plurality of working lenses is fixed on first in second lens barrel with two or more and works lens set to adapt to the requirement of dissimilar cameras to resolution and pixel.
This digital camera automatic focusing mechanism also can be arranged on the second work lens set 170 in first lens barrel 120, makes this second work lens set 170 also can reach identical effect with respect to 120 rotations of first lens barrel.
Claims (14)
1. digital camera automatic focusing mechanism, it comprises a substrate, one is fixedly mounted on first lens barrel on the substrate, one has second lens barrel of a camera lens, this second lens barrel is installed in first lens barrel, and at least one work lens set and that is positioned at second lens barrel is installed in the image sensor on the substrate, it is characterized in that this work lens set has a plurality of working lenses, these a plurality of working lenses have different curvature respectively, and this work lens set can be rotated in second lens barrel.
2. digital camera automatic focusing mechanism as claimed in claim 1 is characterized in that the central point of this image sensor and the central point of camera lens are positioned on the perpendicular line.
3. digital camera automatic focusing mechanism as claimed in claim 2 is characterized in that the central point of a plurality of working lenses that this work lens set is had all is positioned on the concentric circles.
4. digital camera automatic focusing mechanism as claimed in claim 3, when it is characterized in that this work lens set rotation, the central point of these a plurality of working lenses is respectively by the central point of image sensor and the determined straight line of central point of second lens barrel.
5. digital camera automatic focusing mechanism as claimed in claim 1 is characterized in that these a plurality of working lenses are liquid lens.
6. digital camera automatic focusing mechanism as claimed in claim 5 is characterized in that also covering a liquid containing layer on this work lens set, and this liquid containing layer communicates with a plurality of working lenses respectively.
7. digital camera automatic focusing mechanism as claimed in claim 6 is characterized in that this working lenses injects or flow out the curvature that liquid in it changes this working lenses by liquid containing course working lenses.
8. digital camera automatic focusing mechanism as claimed in claim 1 is characterized in that this digital camera automatic focusing mechanism further comprises at least one work lens set that is fixedly mounted in second lens barrel.
9. digital camera automatic focusing mechanism as claimed in claim 8, it is characterized in that this work lens set that is fixedly mounted in second lens barrel comprises steady job lens, the central point of these steady job lens is positioned on the determined straight line of central point of image sensor and camera lens, and it is glass lens or plastic lens.
10. digital camera automatic focusing mechanism as claimed in claim 1 is characterized in that this digital camera automatic focusing mechanism further comprises an aperture diaphragm, and it is arranged between work lens set and the camera lens.
11. digital camera automatic focusing mechanism as claimed in claim 1 is characterized in that this digital camera automatic focusing mechanism further comprises an infrared ray cut optical filtering, it is arranged in second lens barrel near the substrate place.
12. digital camera automatic focusing mechanism, it comprises a camera lens, the central point of one central point and camera lens is positioned at image sensor and at least one work lens set on the straight line, it is characterized in that this work lens set has a plurality of working lenses, these a plurality of working lenses have different curvature respectively, and this work lens set is rotatable, and the central point of these a plurality of working lenses is respectively by the central point of image sensor and the determined straight line of central point of camera lens during rotation.
13. digital camera automatic focusing mechanism as claimed in claim 12 is characterized in that these a plurality of working lenses are liquid lens.
14. digital camera automatic focusing mechanism as claimed in claim 13 is characterized in that covering a liquid containing layer on this work lens set, this liquid containing layer communicates with a plurality of working lenses respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610033586 CN101017310A (en) | 2006-02-11 | 2006-02-11 | Automatically focusing device of digital camera |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610033586 CN101017310A (en) | 2006-02-11 | 2006-02-11 | Automatically focusing device of digital camera |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101017310A true CN101017310A (en) | 2007-08-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610033586 Pending CN101017310A (en) | 2006-02-11 | 2006-02-11 | Automatically focusing device of digital camera |
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| Country | Link |
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| CN (1) | CN101017310A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108495017A (en) * | 2018-06-02 | 2018-09-04 | Oppo（重庆）智能科技有限公司 | The control method of camera module, electronic device and electronic device |
| CN110958380A (en) * | 2018-09-25 | 2020-04-03 | 株式会社斯库林集团 | Image processing method and image processing apparatus |
| CN113905180A (en) * | 2021-10-15 | 2022-01-07 | 珠海格力电器股份有限公司 | Lens module with adjustable focal length and electronic equipment |
| US11280984B2 (en) | 2019-09-27 | 2022-03-22 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Reflective camera and electronic device |
-
2006
- 2006-02-11 CN CN 200610033586 patent/CN101017310A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108495017A (en) * | 2018-06-02 | 2018-09-04 | Oppo（重庆）智能科技有限公司 | The control method of camera module, electronic device and electronic device |
| CN110958380A (en) * | 2018-09-25 | 2020-04-03 | 株式会社斯库林集团 | Image processing method and image processing apparatus |
| US11280984B2 (en) | 2019-09-27 | 2022-03-22 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Reflective camera and electronic device |
| CN113905180A (en) * | 2021-10-15 | 2022-01-07 | 珠海格力电器股份有限公司 | Lens module with adjustable focal length and electronic equipment |
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Open date: 20070815 |