CN100342543C - Package apparatus capable of selecting optimized distance to pack optical sensing module - Google Patents
Package apparatus capable of selecting optimized distance to pack optical sensing module Download PDFInfo
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- CN100342543C CN100342543C CNB2004100296990A CN200410029699A CN100342543C CN 100342543 C CN100342543 C CN 100342543C CN B2004100296990 A CNB2004100296990 A CN B2004100296990A CN 200410029699 A CN200410029699 A CN 200410029699A CN 100342543 C CN100342543 C CN 100342543C
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- optical pickocff
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Abstract
The present invention relates to a package device capable of selecting the optimized distance to pack an optical sensing module, which comprises a base, an image analysis module, a distance adjustment module and a blur detecting module. The package device can make a lens and an optical sensor packed into one optical sensing module by the optimized package distance, and moreover, the present invention has a function of detecting whether the blur exists on the lens or the optical sensor. The present invention can effectively, quickly and accurately accomplish the package and detection for the optical sensing module.
Description
Technical field
The invention provides a kind of sealed in unit, refer to a kind of sealed in unit that can choose optimum distance encapsulating optical sensing module especially.
Background technology
Light energy source is a very important energy source the in life of the mankind from ancient times to the present always, the early stage human luminous energy that uses is warmed oneself, fire or throw light on, modern age, the characteristic for light had more deep understanding again, and the more applications of having derived, no matter in communication (optical-fibre communications), in the image processing (digital camera), show (LCD screen) or other application on the equipment, can see the sci-tech product that utilizes optics, therefore, in conjunction with waiting basic module,, become one of major product that many now electronics manufacturing company produces about photoelectricity as optical pickocff in order to detecting light quantity size.
More common optical pickocff has two kinds, and a kind of is the optical pickocff that digital camera uses, and is called Charged Coupled Device (CCD), but is the semiconductor that a kind of recording optically changes.The surface of Charged Coupled Device has the ability of store charge, and arrange in the mode of matrix, an image signal that presents with optical signal can be changed into image signal with Charge Storage, and, and be reduced into former image according to the power that the number of store charge in the Charged Coupled Device just can this image signal of interpretation.Another kind is the optical pickocff that utilizes MOS (metal-oxide-semiconductor) transistor (CMOS) principle to make, it is to utilize silicon and these two kinds of semiconductors that element is made of germanium, it is being coexisted on CMOS with the semiconductor of the N and the band P utmost point, and these two electric currents that complementary effect produced can write down and be interpreted to image by processed chip.
Yet, the plant produced manufacturing in order to the detecting light quantity assembly the time be to produce an optics sensing module that comprises an optical pickocff and lens simultaneously.Please refer to Fig. 1.Fig. 1 is the schematic diagram of an optics sensing module 10.This optics sensing module 10 comprises lens 14, one optical pickocffs 16 and an interface circuit 18.Generally speaking, the image capturing range that detect can many greatly than the area of optical pickocff, be imaged on the optical pickocff so need lens that extraneous image is dwindled, and as shown in Figure 1, shiner 12 is imaged on the optical pickocff 16 via lens 14.After optical pickocff 16 detects the optical signal of the image that receives, this optical signal is stored in interface circuit 18 in the mode of electric signal, and the electric signal that interface circuit 18 can have these image information is transferred to other equipment and handles by image.
Desire images in lens 14 on the optical pickocff 16 in the prior art, must will be between lens 14 and the optical pickocff 16 adjust an optimum distance (as the D among the figure), just can make on the optical pickocff 16 formed image the clearest.Factory must find this optimum distance when appearing on the scene these optics sensing modules 10, be fixed on lens 14 and optical pickocff 16 on this optimum distance and encapsulation simultaneously, after this, the user will obtain an image the most clearly when using optics sensing module 10, needn't worry the problem of focusing.
It is as follows to adjust between lens 14 and the optical pickocff 16 the optimum distance method now, at first at optics sensing module 10 external shiners 12, shiner 12 can be imaged on the optical pickocff 16 via lens 14, at this moment, keep a segment distance (not being optimum distance usually) between lens 14 and the optical pickocff 16, afterwards, optical pickocff 16 can be passed to interface circuit 18 with image signal, and image signal is exported to a computer via interface circuit 18, showing the image that is projeced on the optical pickocff 16 on the computer screen at last.Whether the tester determines the present imaging in the end by the image on the computer screen clear, if it is unclear, expression lens 14 are not the focal length of lens with the distance of optical pickocff 16, therefore adjust the distance of lens 14 and optical pickocff 16 again with manual type, Yi Bian note the image on the computer screen simultaneously.Image on the tester thinks computer screen has been the most clearly under the situation, then identification lens 14 this moment have been optimum distance with the distance of optical pickocff 16, so,, become an optics sensing module 10 that can dispatch from the factory and put on the shelf lens 14 and optical pickocff 16 fixing encapsulation.
Though the method for previous encapsulating optical sensing module can be at the optimum distance between encapsulation process fixed lens and optical pickocff; but following shortcoming is arranged but: one, owing to judge the clear and fuzzy of image in artificial mode; usually can define different focal lengths, the result of focusing and indeterminate unification because of the tester is different.Two, the non-machine of people and tired easily is so the manual type focusing is more unreliable.Three, the human resources price is higher, and speed is also slower, and the economy that does not meet production is beneficial.If the lens of four optics sensing modules itself have a stain or optical pickocff on little bad point is arranged, can't detect fast and effectively.Therefore, the invention provides a kind of sealed in unit that can choose optimum distance encapsulating optical sensing module, improve the shortcoming of prior art, promote encapsulating optical sensing module accuracy and speed.
Summary of the invention
The present invention discloses a kind of sealed in unit that can choose optimum distance encapsulating optical sensing module, and it comprises a pedestal, is used for placing lens and an optical pickocff, and the distance between these lens and this optical pickocff is adjustable; One image analysing computer module is used for analyzing the image signal of this optical pickocff reception and exports an analysis result signal according to the result who analyzes; One apart from adjusting module, links to each other with this pedestal and this image analysing computer module, is used for analysis result signal according to the output of this image analysing computer module, adjusts the lens of this pedestal and the distance between optical pickocff; And a stain detection module, link to each other with this pedestal, be used for the image signal that receives according to this optical pickocff and a standard video and judge whether these lens or this optical pickocff be stained.
The invention provides a kind of method that can encapsulate this optics sensing module, comprise following steps with the preferred package distance of lens in the optics sensing module and an optical pickocff:
(a) read the image signal that this optical pickocff receives;
(b) the image analysing computer module captures a part of image signal from the image signal that this optical pickocff receives;
(c) the image analysing computer module is calculated the image difference coefficient according to the partial image signal that is captured again, and the following step is carried out in the calculating of this image difference coefficient:
(c1) in this partial image signal, on the calculated level axle difference of each adjacent local image signal square;
(c2) in this partial image signal, calculate each adjacent local image signal on the vertical axis difference square; And
(c3) with each image signal difference on this trunnion axis square with vertical axis on the summed square of each image signal difference, to obtain this image difference coefficient;
(d) apart from adjusting module according to this image difference coefficient, the control adjusting mechanism is adjusted the distance between these lens and this optical pickocff, this step (d) is adjusted the distance between these lens and this optical pickocff, make these lens and this optical pickocff under this distance, the partial image signal that is captured calculates the image difference coefficient for maximum;
(e) fix these lens and this optical pickocff by package module and finish the encapsulation of this optics sensing module.
The present invention is significant with respect to the effect of existing structure:
Can choose in the sealed in unit of optimum distance encapsulating optical sensing module in the present invention, utilize the image analysing computer module and the optimum distance of the lens on the pedestal and optical pickocff being adjusted to automatically encapsulation that cooperates apart from adjusting module, make that the image of being detected can more clearly imaging in the optical pickocff of inside after this optics sensing module encapsulation.In addition, sealed in unit of the present invention has a stain detection module, can be in encapsulation process simultaneously in the detection optical sensing module lens and optical pickocff whether stained situation is arranged, if detect when having stained situation, further point out on the lens with optical pickocff on stained position.The present invention will encapsulate with optical detection and close in same flow process, and encapsulation distance, encapsulating optical sensing module and detection optical module have been realized adjusting in full automatic mode, shortened the time of previous packaging and testing greatly, reduce the required human resources of packaging and testing process, the efficient of dispatching from the factory of optics sensing module develops efficiency, and promoting the accuracy of optics sensing module package detection, is that prior art is beyond one's reach.
The method of existing encapsulating optical sensing module is utilized the normal indefinite situation of result because of judging that the different generations with fuzzy definition of knowing of image are focused of the encapsulation distance between tester's manual adjustment lens and optical pickocff.Moreover, the required human resources price of previous method height, package speed is slow, does not meet the economic benefit of production.And, can not in encapsulation process, detect the stain of lens or the bad point on the optical pickocff fast and effectively.The present invention can choose the sealed in unit of optimum distance encapsulating optical sensing module, have the image analysing computer module, apart from adjusting module and stain detection module, can finish the encapsulation of optics sensing module and the stained detection of lens and optical pickocff automatically, have that speed is fast, efficient is high, accuracy promotes and advantage cheaply.
Description of drawings
Fig. 1 is the schematic diagram of existing optics sensing module.
Fig. 2 can choose the calcspar of the sealed in unit of optimum distance encapsulating optical sensing module for the first embodiment of the present invention.
Fig. 3 be between lens and optical pickocff when the different distance, the variation schematic diagram of image difference coefficient FD.
Fig. 4 can choose the calcspar of the sealed in unit of optimum distance encapsulating optical sensing module for the second embodiment of the present invention.
Fig. 5 is the vertical view of base construction in the sealed in unit of the present invention.
Whether stained Fig. 6 be used for detecting the flow chart of lens or an optical pickocff method for the present invention.
Fig. 7 determines the flow chart of the method for the preferred package distance of lens and an optical pickocff in the optics sensing module for the present invention.
The figure number explanation
10 optics sensing modules, 14 lens, 16 optical pickocffs
18 interface circuits, 30 sealed in units, 32 stain detection modules
33 memories 34 are apart from adjusting module 36 image analysing computer modules
37 logic devices, 31 package modules, 35 adjusting mechanisms
38 pedestals, 40 sealed in units, 44 motors
39 flips of 46 signal translation interfaces, 48 processors
Embodiment
Please refer to Fig. 2, Fig. 2 can choose the calcspar of the sealed in unit 30 of optimum distance encapsulating optical sensing module for the first embodiment of the present invention.Sealed in unit 30 comprises a stain detection module 32, apart from adjusting module 34, an image analysing computer module 36, a package module 31 and a pedestal 38.Pedestal 38 is used for placing lens and an optical pickocff, and the segment distance of being separated by between these lens and this optical pickocff, pedestal 38 comprises an adjusting mechanism 35 in addition, is used for adjusting the distance between these lens and this optical pickocff.Image analysing computer module 36 links to each other with pedestal 38, is used for analyzing the image signal that optical pickocff received on the pedestal 38.Link to each other with pedestal 38 and image analysing computer module 36 apart from adjusting module 34, analyzed one group image signal when image analysing computer module 36 after, analysis result is reached apart from adjusting module 34, whether control adjusting mechanism 35 apart from adjusting module 34 according to the decision of this analysis result and adjust the distance between these lens and this optical pickocff on the pedestal 38, if the distance between these lens and this optical pickocff must change, apart from adjusting mechanism 35 adjustment lens in the adjusting module 34 control pedestals 38 and the distance between this optical pickocff.Stain detection module 32 links to each other with pedestal 38, is used for judging whether the image signal that optical pickocff receives is spotless perfect image signal.Package module 31 is used for encapsulating these lens and this optical pickocff to form this optics sensing module.
After image analysing computer module 36 was received the image signal that pedestal 38 transmits, acquisition partial image signal wherein was as the usefulness of analysis.The function of image analysing computer is to be finished by a logic device 37 of image analysing computer module 36 inside.Logic device 37 can be judged the degree of knowing of an image signal, and its method is to see through a parameter that is called the image difference coefficient to do assessment.If the image difference coefficient of an image is bigger, represent that this image is clearer.Suppose that the partial image signal that captured is made of the image signal of a plurality of pixels, only get among the Color Filter pixel for the position of Gb (or Gr), its image signal value is with g (x, y) expression.Next define one on the trunnion axis signal gradient G x and the signal gradient G y on the vertical axis, be expressed as follows with mathematical expression respectively:
Gx＝g(x，y)-g(x+1，y)
Gy＝g(x，y)-g(x，y+1)
Therefore, image difference coefficient FD can be expressed as follows:
When lens and optical pickocff were separated by different distance in the pedestal 38, the image difference coefficient FD of the image analysing computer module 36 analysis image signals that receive was also inequality.If the distance of adjusting lens and optical pickocff on the pedestals 38 apart from adjusting module 34 can obtain the value of different images coefficient of variation FD from closely when far away.
Please refer to Fig. 3, Fig. 3 be between lens and optical pickocff when the different distance, the variation schematic diagram of image difference coefficient FD.Transverse axis among the figure is the distance between lens and optical pickocff, and the longitudinal axis is represented image difference coefficient FD.As shown in Figure 3, when between lens and optical pickocff when the optimum distance, image difference coefficient FD be maximum, and this distance is the distance that sealed in unit 30 is fixed the encapsulation of optics sensing module.
When choosing an optimum distance and come the encapsulating optical sensing module, the operation situation of each module is exemplified below in the sealed in unit 30: at first control the distance that pedestal 38 changes between lens and optical pickocff apart from adjusting module 34, image analysing computer module 36 is analyzed the image difference coefficient FD under each distance on one side in the process that distance changes.If image difference coefficient FD begins to diminish in the process that distance changes, and during less than a degree, then the distance of oppositely adjusting between lens and optical pickocff apart from the adjusting mechanism 35 in the adjusting module 34 control pedestals 38 (that is to say, originally distance is it to be furthered when zooming out, originally distance is when furthering, it is zoomed out), otherwise, if image difference coefficient FD is more and more big in the process that distance changes, then continue to adjust in the same way distance, till image difference coefficient FD begins to diminish.As shown in Figure 3, optimum distance occurs in the turning point of curve, so work in coordination apart from adjusting module 34 and image analysing computer module 36, find out optimum distance, afterwards, finish the encapsulation of optics sensing module apart from adjusting module 34 by package module 31 with being fixed on this optimum distance between lens on the pedestal and optical pickocff.
In adjusting the process of distance, is different to change distance between lens and optical pickocff apart from adjusting range with one apart from adjusting module 34.When searching first, apart from the adjusting module 34 fixing focal lengths that go to seek the best with bigger adjusting range, wait to search and surpass after the curve turning point, can begin reverse search with littler adjusting range, go to seek more accurate focal position, so repeatedly till the adjusting range search with minimum finishes.The purpose of doing like this be can allow roll adjustment from process both become fast and accurately.
It is to have a stain detection module 32 that sealed in unit 30 of the present invention has an important characteristic, can detect the stain on the lens or the bad point of optical pickocff.Stain detection module 32 comprises a memory 33, and it is used for storing a standard video.Standard video be one perfectly with reference to image, it is to receive the resulting image signal of a sample light source by the lens of one group of perfection (not having stained) and optical pickocff to be stored within this memory 33.Lens and the optical pickocff of supposing desire encapsulation all are that quality is good and no problem, then this sample light source via these lens and this optical pickocff pass to stain detection module 32 image signal should with the standard video striking resemblances that store in the memory 33.Otherwise, if the image signal that stain detection module 32 receives with the standard video in the memory 33 when different, is represented lens or optical pickocff has stained situation.
The image signal that optical pickocff received that pedestal 38 reaches stain detection module 32 is divided into a plurality of sub-image signals, and each sub-image signal is represented pixel signal on the optical pickocff, and each pixel signal is corresponding to position of optical pickocff.On the other hand, standard video also resolves into a plurality of substandard images, each substandard image is the same as position of optical pickocff, when stain detection module 32 is compared, be with a plurality of sub-image signals of corresponding same position and the comparison one by one of a plurality of substandard images, if when finding that comparison does not meet, can know that the sub-image signal of corresponding those positions does not meet, can push back thus has stained position on optical pickocff or the lens.
In addition, stain of the present invention detect differ be decided to be one independently the stain detection module finish, the function that stain detects can be finished in the lump by the circuit in the image analysing computer module.Therefore the sealed in unit that can choose optimum distance encapsulating optical sensing module of the second embodiment of the present invention comprises one apart from adjusting module 34, an image analysing computer module 36, a package module 31 and a pedestal 38.All identical apart from adjusting module 34, package module 31 and pedestal 38 with aforesaid function, but image analysing computer module 36 is except comprising aforementioned functional, and other has the function of stained detection.
Please refer to Fig. 4, Fig. 4 can choose the calcspar of the sealed in unit 40 of optimum distance encapsulating optical sensing module for the second embodiment of the present invention.Sealed in unit 40 comprises lens 14, an optical pickocff 16, a pedestal 38, a motor 44, a signal translation interface 46 and a processor 48.Pedestal 38 is put lens 14 and optical pickocff 16 with a certain adjustable distance.The image signal that optical pickocff 16 is received reaches signal translation interface 46.Signal translation interface 46 stores image signal or reaches processor 48.Processor 48 is used for this image signal of analyzing and processing, and passes analysis result back signal translation interface 46.Motor 44 is in order to adjust the distance of 16 of lens 14 and optical pickocffs.Signal translation interface 46 will rotate according to the analysis result control motor 44 of processor 48, makes lens 14 and optical pickocff 16 at a distance of an optimum distance, as the encapsulation distance.Please refer to Fig. 5.Fig. 5 is the vertical view of pedestal 38 structures in the sealed in unit of the present invention.Pedestal 38 among Fig. 5 comprises a flip 39, and after flip 39 was opened, lens 14 and optical pickocff 16 were placed in it, and flip 39 is used for fixing or protects lens 14 and optical pickocff 16, and sealed in unit 40 can be finished smoothly in the process of encapsulation.
Please refer to Fig. 6, Fig. 6 is used for detecting the flow chart of the method for lens or an optical pickocff for the present invention.Receive one in the step 100 via the image signal of this lens imaging in this optical pickocff.Step 110 is divided into a plurality of sub-image signals with this image signal, and these a plurality of sub-image signals are represented each pixel signal on the optical pickocff, and each pixel signal is corresponding to a position on the optical pickocff.Step 120 should a plurality of sub-image signals and a standard video compare, wherein this standard video before being described one perfectly with reference to image, it is to receive the resulting image signal of a sample light source by the lens of one group of perfection (not having stained) and optical pickocff.Standard video also resolves into a plurality of substandard images, each substandard image is the same as position of optical pickocff, when step 120 is compared, be with a plurality of sub-image signals of corresponding same position and the comparison one by one of a plurality of substandard images.In step 130, do not conform to if find to compare in the step 120, find out the correspondence position of the sub-image signal that does not conform to, and know by inference stained position is arranged on optical pickocff or the lens.The order of Fig. 6 flow process is a preferred embodiment in the inventive method, and flow sequence wherein can be done variation according to situation, is not limited to described order.
Please refer to Fig. 7, Fig. 7 determines the flow chart of the method for the preferred package distance of lens and an optical pickocff in the optics sensing module for the present invention.At first the distance of adjusting in step 200 between these lens and this optical pickocff is a fixed range, and the process of wherein adjusting distance is to search with different adjusting ranges one by one, in the hope of more accurate optimum distance as previously mentioned.Then read the image signal that this optical pickocff receives in step 210.Step 220 captures a part of image signal as analyzing image usefulness afterwards from the image signal that this optical pickocff receives, get the object that too big scope may contain the different depth of field, is difficult for focusing.Step 230 is calculated the image difference coefficient according to the partial image signal that step 220 captured.As previously mentioned, the image difference coefficient is the degree of knowing that is used for assessing an image signal, if the image difference coefficient of an image is bigger, represents that this image is clearer.The following step is carried out in the calculating of image difference coefficient in the step 230:
(a) in this partial image signal, the difference of each adjacent local image signal is with Gx=g (x on the trunnion axis, y)-g (x+1, y) expression, g (x wherein, y) in this local image being the coordinate position of Gb (or Gr), calculate square Gx of local image signal difference corresponding to ColorFilter
2
(b) in this partial image signal, on the vertical axis difference of each adjacent local image signal with Gy=g (x, y)-(square Gy of local image signal difference is calculated in x, y+1) expression to g
2
(c) with square Gx of the local image signal difference on all trunnion axis
2Square Gy with local image signal difference on all vertical axis
2Addition obtains this image difference coefficient.
Whether the image difference number that determining step 230 calculates in the step 240 begins to diminish and less than a degree, change adjusting range and oppositely seek and searching, otherwise continue with identical direction and adjusting range, the flow process of repeating step 210, step 220 and step 230, when seeking the image difference numerical value that searches out maximum with the adjusting range of minimum, stop to adjust the distance between lens and this optical pickocff, and the distance of the distance between fixed lens and this optical pickocff when being image difference coefficient maximum.In case optimum distance is found out, step 250 is packaged into an optics sensing module with lens and this optical pickocff, promptly finishes institute in steps.The order of Fig. 7 flow process is a preferred embodiment in the inventive method, and flow sequence wherein can be done variation according to situation, is not limited to described order.
The above only changes for all equalizations of doing according to claims of the present invention of preferred embodiment of the present invention and modifies, and all should belong to the covering scope of patent of the present invention.
Claims (9)
1, a kind of sealed in unit that can choose optimum distance encapsulating optical sensing module is characterized in that, comprises:
One pedestal is used for placing lens and an optical pickocff, and this pedestal comprises an adjusting mechanism in addition, is used for adjusting the distance between these lens and this optical pickocff;
One image analysing computer module is used for analyzing the image signal of this optical pickocff reception and exports an analysis result signal according to the result who analyzes;
One apart from adjusting module, links to each other with this pedestal and this image analysing computer module, is used for analysis result signal according to the output of this image analysing computer module, and the adjusting mechanism of controlling this pedestal is to adjust the distance between these lens and this optical pickocff; And
One package module is used for encapsulating these lens and this optical pickocff to form this optics sensing module.
2, sealed in unit as claimed in claim 1 is characterized in that, this comprises a motor apart from adjusting module.
3, sealed in unit as claimed in claim 1 is characterized in that, this image analysing computer module comprises a stain testing circuit, is used for the image signal that receives according to this optical pickocff and a standard video to judge whether these lens or this optical pickocff be stained.
4, sealed in unit as claimed in claim 1 is characterized in that, other comprises a stain detection module, links to each other with this pedestal, is used for the image signal that receives according to this optical pickocff and a standard video to judge whether these lens or this optical pickocff be stained.
5, sealed in unit as claimed in claim 4 is characterized in that, this stain detection module comprises a memory, is used for storing this standard video.
6, sealed in unit as claimed in claim 1 is characterized in that, other comprises a memory, is arranged in the image analysing computer module, is used for storing the image signal that this optical pickocff receives.
7, a kind of method that can encapsulate this optics sensing module with the preferred package distance of lens in the optics sensing module and an optical pickocff is characterized in that, comprises following steps:
(a) read the image signal that this optical pickocff receives;
(b) the image analysing computer module captures a part of image signal from the image signal that this optical pickocff receives;
(c) the image analysing computer module is calculated the image difference coefficient according to the partial image signal that is captured again, and the following step is carried out in the calculating of this image difference coefficient:
(c1) in this partial image signal, on the calculated level axle difference of each adjacent local image signal square;
(c2) in this partial image signal, calculate each adjacent local image signal on the vertical axis difference square; And
(c3) with each image signal difference on this trunnion axis square with vertical axis on the summed square of each image signal difference, to obtain this image difference coefficient;
(d) apart from adjusting module according to this image difference coefficient, the control adjusting mechanism is adjusted the distance between these lens and this optical pickocff, this step (d) is adjusted the distance between these lens and this optical pickocff, make these lens and this optical pickocff under this distance, the partial image signal that is captured calculates the image difference coefficient for maximum;
(e) fix these lens and this optical pickocff by package module and finish the encapsulation of this optics sensing module.
8, method as claimed in claim 7 is characterized in that, the distance that step (d) is adjusted between these lens and this optical pickocff comprises a plurality of adjustment processes, each adjusting range difference.
9, method as claimed in claim 7 is characterized in that, comprises also that between the step (a) and (b) one detects step, utilizes a stain detection module or a stain testing circuit to detect lens or an optical pickocff, comprises:
(a) receive one via the image signal of this lens imaging in this optical pickocff;
(b) this image signal is divided into a plurality of sub-image signals, these a plurality of sub-image signals correspond to a plurality of positions respectively;
(c) will these a plurality of sub-image signals and a plurality of substandard images of this standard video compare;
(d) when this image signal does not conform to this standard video, make the position of the sub-image signal that does not conform to.
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| CN100342543C true CN100342543C (en) | 2007-10-10 |
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| WO2020220185A1 (en) * | 2019-04-29 | 2020-11-05 | 深圳市大疆创新科技有限公司 | Cleaning method, cleaning control system, computer readable storage medium, cleaning system, optical sensor, and mobile platform |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5438190A (en) * | 1991-07-22 | 1995-08-01 | Canon Kabushiki Kaisha | Lens control device |
| CN1119975A (en) * | 1994-06-02 | 1996-04-10 | 三菱电机株式会社 | Optical processing method and apparatus for carrying out the same |
| JP2001203927A (en) * | 2000-01-19 | 2001-07-27 | Hitachi Kokusai Electric Inc | Television camera |
| CN1480761A (en) * | 2002-09-04 | 2004-03-10 | 力捷电脑股份有限公司 | Method for adjusting rellecting mirror to optimum position |
-
2004
- 2004-03-30 CN CNB2004100296990A patent/CN100342543C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5438190A (en) * | 1991-07-22 | 1995-08-01 | Canon Kabushiki Kaisha | Lens control device |
| CN1119975A (en) * | 1994-06-02 | 1996-04-10 | 三菱电机株式会社 | Optical processing method and apparatus for carrying out the same |
| JP2001203927A (en) * | 2000-01-19 | 2001-07-27 | Hitachi Kokusai Electric Inc | Television camera |
| CN1480761A (en) * | 2002-09-04 | 2004-03-10 | 力捷电脑股份有限公司 | Method for adjusting rellecting mirror to optimum position |
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