CN100376912C - Image sensing module focusing device and method - Google Patents
Image sensing module focusing device and method Download PDFInfo
- Publication number
- CN100376912C CN100376912C CNB031401295A CN03140129A CN100376912C CN 100376912 C CN100376912 C CN 100376912C CN B031401295 A CNB031401295 A CN B031401295A CN 03140129 A CN03140129 A CN 03140129A CN 100376912 C CN100376912 C CN 100376912C
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- lens barrel
- focusing
- sensing module
- image sensing
- top cover
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Abstract
The present invention provides a focusing device for an image sensing module set and a focusing method for using the focusing device. The focusing device for an image sensing module set comprises an image sensing module set and a focusing tool used for enlarging the outer diameter of a lens barrel. The focusing method comprises the steps that the focusing tool is fixed on a top cover of the lens barrel, and the lens barrel is driven to rotate through a rotary focusing tool; simultaneously, the clearness of image formation is observed through a monitoring device, and the lens barrel is fixed until the image formation has optimal clearness. By using the focusing device and the focusing method, the focusing accuracy can be raised, the focusing time can be saved, and the condition that the lens barrel is held by hands, and consequently, incident rays are blocked can be avoided.
Description
[technical field]
The invention relates to a kind of image sensing module focusing device and method that is applied on the portable electronic equipment.
[background technology]
Continuous development along with the internet multimedia technology, digital camera is by people's widespread use, particularly mobile phone and PDA portable electron devices such as (personal digital assistants) is also developing to high-performance, multifunction direction fast in recent years, and the combination of digital camera and portable electron device has become one of characteristic of development mobile multimedia technology.
The image sensing module of existing digital camera generally comprises: lens combination, lens barrel, pedestal and photoelectric sensor.Lens barrel outer wall and base internal wall are provided with the screw thread that matches, and the lens barrel front end is provided with the top cover that is used to protect lens combination.In the image sensing module assembling manufacture process of digital camera, a focusing worker station is arranged, promptly adjust the distance of lens combination and photoelectric sensor, make the light signal that incident light scioptics group incides on the photoelectric sensor reach best, thereby make imaging the most clear.The method of widespread usage is that lens barrel is inserted pedestal at present, and the emitting incident light line makes it arrive photoelectric sensor by the lens combination that is immobilizated in the lens barrel.By the screw thread that lens barrel and pedestal match, seize top cover on both sides by the arms with hand and slowly rotate lens barrel, lens barrel is moved up and down with respect to pedestal, adjust the distance of lens combination and photoelectric sensor thus.To imaging the most clearly during the position, with viscose glue or alternate manner lens barrel is fixed again.Because portable electron device miniaturization day by day, make the volume of the image sensing module that combines with it also should satisfy the requirement of miniaturization, the external diameter of general lens barrel only is 5-8mm, the top cover external diameter is 8-10mm, therefore lens barrel rotates less arc length will to cause that lens barrel moves up and down bigger, not only makes the focusing degree of accuracy lower, and need regulate repeatedly and lose time, and because the lens barrel volume is little, it is very inconvenient to grip with hand.Moreover, need to grasp lens barrel in the focusing process, stop incident ray easily, influence focus effect.
[summary of the invention]
The present invention is lower in order to overcome existing image sensing module focusing device focusing degree of accuracy, waste is made built-up time and is stopped incident ray easily, influence the deficiency of focus effect, and provide a kind of image sensing module focusing device, this device can improve the focusing degree of accuracy, save the focusing time and avoid stopping the situation of incident ray, make distance between lens and the photoelectric sensor, thereby improve the imaging definition of image sensing module near best.
Another object of the present invention is to provide a kind of focus adjustment method that uses image sensing module focusing device, this method can improve the focusing degree of accuracy.
The present invention solves the problems of the technologies described above the technical scheme that is adopted: image sensing module focusing device of the present invention comprises: an image sensing module, this sensing module comprises a plurality of lens, lens barrel, pedestal and is contained in the interior photoelectric sensor of pedestal, a plurality of lens are installed in the lens barrel, this lens barrel front end is provided with top cover, this lens barrel outer wall and base internal wall are provided with the screw thread that cooperatively interacts, and lens barrel and pedestal combine by this screw thread; One focusing instrument, this focusing instrument comprises a body, which is provided with through hole, this through hole matches with the top cover of above-mentioned lens barrel, the outside dimension of this body is much larger than the outside dimension of top cover, when rotating the body of this focusing instrument, this body drives this lens barrel with respect to base motion, with the position of the relative pedestal of fine setting lens barrel.
Image sensing module focusing method of the present invention may further comprise the steps: earlier the focusing instrument is immobilizated on the top cover of lens barrel; Lens barrel is inserted pedestal; One test board, a test pattern, a supervising device are provided; Then, adjust the position of test pattern and test board; Connect test board and watch-dog; Image sensor apparatus after will assembling again is assemblied on the test board in the focusing instrument, by the rotation of rotation focusing tool belt moving lens barrel, regulates lens barrel and moves up and down; Simultaneously, the sharpness of the imaging by supervising device observation test figure when imaging is known most, is fixed lens barrel.
The invention has the beneficial effects as follows: image sensing module focusing method of the present invention is to utilize the focusing instrument to increase the external diameter of top cover, thereby improve the focusing degree of accuracy, save the focusing time and avoid stopping the situation of incident ray, make the distance between lens and the photoelectric sensor approaching best, thereby improve the imaging definition of digital camera.
[description of drawings]
Fig. 1 is an image sensing module focusing device synoptic diagram of the present invention;
Fig. 2 is an image sensing module disassembly diagram of the present invention;
Fig. 3 is a focusing instrument disassembly diagram of the present invention;
Fig. 4 is the assembly drawing of image sensing module of the present invention and focusing instrument.
[embodiment]
Panel Dismounting Structure Of Portable Electronic Devices of the present invention is used for portable electron devices such as mobile phone, PDA.
Please refer to shown in Figure 1ly, image sensing module focusing device of the present invention comprises image sensing module 10, focusing instrument 20.
Please refer to shown in Figure 2ly, sensing module 10 comprises a plurality of lens (figure do not show), lens barrel 12, pedestal 14 and photoelectric sensor 16.A plurality of lens are generally non-spherical lens, are mounted and fixed in the cylindrical lens barrel 12, and the lens barrel front end is provided with the top cover 122 that external diameter is slightly larger than lens barrel 12, and top cover 122 is used for protecting lens and can allows extraneous light be incident to lens.The lens barrel outer wall is provided with first screw thread 120.Photoelectric sensor 16 is installed on the circuit board 143 and other interlock circuit is connected.This photoelectric sensor 16 is to write down the semiconductor devices that light changes, and received light signal can be converted into electric signal.It can be CCD (ChargeCoupled Device, charge-coupled device) or CMOS (Complementary Metal-OxideSemiconductor, complementary metal oxide semiconductor (CMOS)).Pedestal 14 comprises base 141 and the tube 142 of finding a view, and base 141 is fixed on the circuit board 143, makes photoelectric sensor 16 be contained in the base 141 and makes the tube 142 of finding a view corresponding to photoelectric sensor 16 tops.Incident ray can be incided on the photoelectric sensor 16 by the tube 142 of finding a view.Tube 142 inwalls of finding a view are provided with second screw thread 1420 that first screw thread 120 with lens barrel 12 outer walls matches.Lens barrel 12 can insert the tube 142 of finding a view, and by first screw thread 120 and the rotation of second screw thread 1420 and move up and down with respect to getting lens barrel 142.
Please refer to shown in Figure 3ly, focusing instrument 20 comprises body 21 and two screw rods 22.Body 21 is cylindrical, and the centre is provided with manhole 211, and the slightly larger in diameter of this through hole 211 is in top cover 122 external diameters.The inwall of through hole 211 is provided with two circular socket holes 212, and it runs through body 21.The inwall of jack 212 is provided with the 3rd screw thread (figure does not show), and two jacks 212 are about the center of circle symmetry of through hole 211.First surface 210 at the body 21 of focusing instrument 20 is established annular recess 213 along through hole 211 rings, so that the incident light in the lens field angle can pass through smoothly when focusing
Lens imaging and not being blocked.Screw rod 22 1 ends are provided with nut 222, its body surfaces be provided with jack 212 inwalls on the 4th screw thread 220 of set the 3rd threads engaged.Nut 222 surfaces can be provided with cross groove 224, make things convenient for application tool rotary screw 22 in jack 211.The outside dimension of this body 21 is much larger than the outside dimension of the top cover 122 of lens barrel 12, makes when regulating focusing instrument 20, can finely tune the position of lens barrel 12 relative pedestals 14.Therefore, during focusing, only need to regulate focusing instrument 20, just can accurately finely tune focal length apace.
Referring again to shown in Figure 1, test macro 30 comprises test Figure 31, test board 32 and relevant supervising device 33, as: the counter with relative program.Test Figure 31 is provided with the different grid-shaped strip line of many densitys distributions, judges by the image definition after 10 imagings of this clause figure process image sensing module whether the lens of image sensing module 10 and the distance of photoelectric sensor 16 reach best.During focusing, image sensing module 10 is assemblied on the test board 32, which is provided with interlock circuit and transmission line, USB (Universal Serial Bus for example, USB (universal serial bus)) bus 34, and the signal of video signal of the test Figure 31 that image photoelectric sensor 16 can be captured is sent in the supervising device 33.Supervising device 33 is converted to the signal that receives VGA (Video Graphics Array, Video Graphics Array) video signal form, and is presented on the display screen, or with after the calculating of signal process, finishes robotization image quality interpretation function.
Please refer to shown in Figure 4ly, a kind of focus adjustment method of this image sensing module focusing device that uses may further comprise the steps: at first, the through hole 211 of focusing instrument 20 is aimed at the top cover 122 of lens barrels, and the first surface 210 that makes focusing instrument 20 is towards the incident direction of light.To center of circle direction rotary screw 22, make it seize top cover 122 on both sides by the arms, be in the same place thereby top cover 122 and focusing instrument 20 fixed.There is the lens barrel 12 of focusing instrument 20 to insert pedestal 14 fixing, can adjusts the distance of lens and photoelectric sensor 16 by rotation focusing instrument 20.Please refer to shown in Figure 1 again, the image sensing module 10 and the focusing instrument 20 that assemble are fixed on the test board, adjust the position of test Figure 31 and test board 32, make test Figure 31 be positioned at test board 32 dead aheads and the two is highly suitable, make the tube 142 of finding a view over against test pattern, so that incident light is injected lens with best angle.With usb bus 34 test board 32 and supervising device 33 are linked up.Drive lens barrel 12 rotations by rotation focusing instrument 20, utilize the screw thread 120,1420 between lens barrel 12 outer walls and base internal wall, reach the purpose of regulating lens and photoelectric sensor 16 distances.When body 21 external diameters of focusing instrument 20 are big more, rotate same arc length, the distance that lens barrel 12 moves up and down is short more, reaches the purpose that improves focusing accuracy thus.Simultaneously, the sharpness of observing imaging by supervising device, by gluing or alternate manner that lens barrel 12 and pedestal 14 is fixing when imaging is known most, the focusing worker station of then finishing an image sensing module.The instrument 20 of will focusing is separated top cover, and the image sensing module is separated test board, again from newly beginning new round focusing worker station.
Claims (8)
1. an image sensing module focusing device comprises: an image sensing module, this sensing module comprises a plurality of lens, lens barrel, pedestal and is contained in the interior photoelectric sensor of pedestal, these lens are installed in this lens barrel, this lens barrel front end is provided with top cover, this lens barrel outer wall and base internal wall are provided with the screw thread that matches, and this lens barrel and this pedestal combine by above-mentioned screw thread; It is characterized in that: above-mentioned image sensing module focusing device also comprises a focusing instrument, this focusing instrument comprises a body, which is provided with through hole, this through hole matches with the top cover of this lens barrel, the outside dimension of this body is much larger than the outside dimension of this top cover, when rotating the body of this focusing instrument, this body drives this lens barrel with respect to base motion, to finely tune this lens barrel position of this pedestal relatively.
2. image sensing module focusing device as claimed in claim 1, it is characterized in that: this pedestal comprises base and the tube of finding a view, this base is fixed on the circuit board, this tube of finding a view is corresponding to this photoelectric sensor top, this photoelectric sensor is installed on this circuit board, and this photoelectric sensor is contained in this base.
3. image sensing module focusing device as claimed in claim 1 is characterized in that: this inwall of finding a view is provided with second screw thread with first threads engaged of this lens barrel outer wall.
4. image sensing module focusing device as claimed in claim 1, it is characterized in that: this through-hole wall is provided with the jack that runs through described body, this jack is for circular and be two, and with respect to the center of circle symmetry of through hole, this focusing instrument also comprises the screw rod that matches with this jack.
5. image sensing module focusing device as claimed in claim 4 is characterized in that: this jack inwall is provided with the 3rd screw thread, and this screw rod main body is provided with the 4th screw thread with the 3rd threads engaged.
6. image sensing module focusing device as claimed in claim 1, it is characterized in that: this body is cylindrical, the first surface towards the incident light direction of this body is established the annular recess along this through hole ring.
7. focus adjustment method that uses the described image sensing module focusing of claim 3 device, it may further comprise the steps:
A. should be immobilizated on the top cover of this lens barrel by the focusing instrument;
B. this lens barrel is inserted this pedestal;
C., one test board, a test pattern, a supervising device are provided;
D. this image sensing module and this focusing instrument after will assembling are assemblied on this test board;
E. adjust the position of this test pattern and this test board, make this get lens barrel over against this test pattern;
F. connect this test board and this supervising device;
G. drive the rotation of this lens barrel by rotating this focusing instrument, regulate this lens barrel and move up and down, simultaneously, the sharpness of observing the imaging of this test pattern by this supervising device when imaging is known most, is fixed this lens barrel.
8. focus adjustment method as claimed in claim 7, it is characterized in that: this through-hole wall is provided with the jack that runs through this body, this jack is circular and is two, and center of circle symmetry with respect to this through hole, this focusing instrument also comprises the screw rod that matches with this jack, this focusing instrument being immobilizated on the top cover of this lens barrel is top cover with this lens barrel of through-hole alignment of this focusing instrument, and first surface that should the focusing instrument is towards the incident direction of light, rotate this screw rod to center of circle direction, make it seize this top cover on both sides by the arms, thereby this top cover and this focusing instrument are fixed together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031401295A CN100376912C (en) | 2003-08-06 | 2003-08-06 | Image sensing module focusing device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031401295A CN100376912C (en) | 2003-08-06 | 2003-08-06 | Image sensing module focusing device and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1580848A CN1580848A (en) | 2005-02-16 |
| CN100376912C true CN100376912C (en) | 2008-03-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031401295A Expired - Fee Related CN100376912C (en) | 2003-08-06 | 2003-08-06 | Image sensing module focusing device and method |
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| Country | Link |
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| CN (1) | CN100376912C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI623775B (en) * | 2017-09-12 | 2018-05-11 | 財團法人金屬工業研究發展中心 | Optical alignment apparatus and optical alignment method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2341163Y (en) * | 1998-08-13 | 1999-09-29 | 业胜股份有限公司 | Improved lens for monitoring camera |
| CN1339708A (en) * | 2000-08-16 | 2002-03-13 | 索尼株式会社 | Connection device of optical parts and optical module using said device |
| CN1374556A (en) * | 2001-03-09 | 2002-10-16 | 奥林巴斯光学工业株式会社 | Focus regulating method for photographic lens |
| JP2003215430A (en) * | 2002-01-25 | 2003-07-30 | Canon Inc | Focusing device, image pickup device, focusing method, control program for focusing device and storage medium |
-
2003
- 2003-08-06 CN CNB031401295A patent/CN100376912C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2341163Y (en) * | 1998-08-13 | 1999-09-29 | 业胜股份有限公司 | Improved lens for monitoring camera |
| CN1339708A (en) * | 2000-08-16 | 2002-03-13 | 索尼株式会社 | Connection device of optical parts and optical module using said device |
| CN1374556A (en) * | 2001-03-09 | 2002-10-16 | 奥林巴斯光学工业株式会社 | Focus regulating method for photographic lens |
| JP2003215430A (en) * | 2002-01-25 | 2003-07-30 | Canon Inc | Focusing device, image pickup device, focusing method, control program for focusing device and storage medium |
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| Publication number | Publication date |
|---|---|
| CN1580848A (en) | 2005-02-16 |
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