CN104793458A - Method and system for focusing multi-camera module based on near-infrared environment - Google Patents
Method and system for focusing multi-camera module based on near-infrared environment Download PDFInfo
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Abstract
The invention relates to a method and a system for focusing a multi-camera module based on a near-infrared environment. The focusing method comprises the steps that infrared light arrives at a test standard plate and gets into each camera of the multi-camera module after being reflected; a focusing operation is carried out on the cameras through a focusing hand wheel; image information acquired by each camera is sent to an analysis center to process, and whether a next step of the focusing operation is carried out continuously or not is judged according to a processing result or the multi-camera module is judged to be unqualified. The method provided by the invention not only can greatly reduce the manufacturing cost of test equipment and simplify the focusing mode, but also reduces the damage probability of a test line by being matched with a special focusing tool. Meanwhile, the production probability is improved, and the matching difference between two lenses can be eliminated by being matched with software.
Description
Technical field
The present invention relates to a kind of focus adjustment method and system thereof of camera module, particularly a kind of focus adjustment method based on the multi-cam module under infrared environmental and system thereof.
Background technology
Camera module is arranged on mobile phone, computer, TV, watch-dog or other digital equipments, for the collection of image information.Camera module is generally made up of parts such as eyeglass, lens barrel, lens mount, sensitive chip, resistance, electric capacity and circuit boards.Eyeglass is contained in lens barrel, and lens barrel is spun together by screw thread and lens mount, by lens barrel being screwed on the focal length spinning down and regulate camera.Before camera module dispatches from the factory, all need to focus to it.During focusing, common way is according to chip image-forming principle, utilizing illumination that sensitive chip is obtained after view data is transferred on computer, coordinate the use of test procedure through computing machine, finally the image-forming information of sensitive chip is shown as the visible image information of human eye and is reflected on computer display screen.When can not reach the standard of setting when focusing, judge that camera module is defective.
Comparatively general in current industry is all single-lens module, focuses under using CCM board planar light source.Particularly, traditional focus adjustment method adopts mark version projective techniques, namely light source adopts source of parallel light, parallel light ground casts out after transmission-type test mark version, mark version through test and reach the sensation chip of camera module, each position of the sensation chip of camera module all receives identical intensity of illumination, then judges whether to accommodate to desirable effect according to the image of Computer display.
Such as, but present cam device, body sense cam device, television camera device etc. can be provided with two or more cameras, to be assembled into multi-cam module.That is, two or more imageing sensors are utilized to gather image information.Such as, when adopting double image sensor work, can be published picture by two wide-angle tiny lens simultaneously, and use infrared imagery technique.Like this, this multi-cam module is just not suitable for adopting traditional mark version projective techniques to focus.
Particularly, traditional focus adjustment method is used can to produce following defect to multi-cam module as dual camera module carries out focusing:
(1) focus on CCM board, there will be the phenomenon that test mark version cannot be full of in test pictures, that is, because two cameras arrange apart from one another by ground and mark version towards test, directional light through test mark version can not arrive the imageing sensor of two cameras, and the test of each like this camera is drawn and can only be tested mark version in display section;
(2) dual camera simultaneously duty time, more than 120 ° wide-angle camera actual imaging areas are 2 times of single-lens module; Therefore need to use large-area planar light source, for volume production and production cost load too large;
(3) because have employed dual camera, can there are differences unavoidably during two camera collection image informations, the measure do not compared and not treated for the difference between multi-cam in traditional focus adjustment method;
(4) each camera all needs focusing, so after a quickcam image focusing completes, needs focus control to take off from this camera, is then arranged on again to another quickcam image focusing on another camera, and such focus operations will become complicated;
(5) infrared imaging effect of traditional transmission-type test mark version is poor.
Summary of the invention
Fundamental purpose of the present invention is to provide a kind of focus adjustment method based on the multi-cam module under near infrared environment and system thereof, and wherein said focus adjustment method is suitable for focusing in real time calibration for multiple cameras of described multi-cam module.
Another object of the present invention is to provide a kind of focus adjustment method based on the multi-cam module under near infrared environment and system thereof, the light of its mid-infrared light source arrives after version is marked in test and enter camera described in each after reflection, so just do not need large-area Infrared Plane light source, reduce production cost.
Another object of the present invention is to provide a kind of focus adjustment method based on the multi-cam module under near infrared environment and system thereof, wherein because described test mark version is used for the light of reflective infrared light source, can be full of in the test pictures of described like this test mark version camera described in each, thus improve focusing accuracy.
Another object of the present invention is to provide a kind of focus adjustment method based on the multi-cam module under near infrared environment and system thereof, wherein said test mark version is arranged on the fixed head lower surface of mark plate rack, and described mark plate rack also comprises the multiple horizontal and vertical fixing rib being arranged on described fixed head upper surface, to prevent described fixed head flexural deformation, thus flat surface is provided, improve focusing measuring accuracy.
Another object of the present invention is to provide a kind of focus adjustment method based on the multi-cam module under near infrared environment and system thereof, wherein, camera described in each is all configured with corresponding focusing tool, thus can focus for camera described in each, to improve focusing efficiency simultaneously.
Another object of the present invention is to provide a kind of focus adjustment method based on the multi-cam module under near infrared environment and system thereof, wherein be configured with p-wire in focusing tool, described multi-cam module adopts pull mode to plug, thus reduce the spoilage of described p-wire, and can ensure that the interface of described p-wire can be energized with the connector of described multi-cam module rapidly.
Another object of the present invention is to provide a kind of focus adjustment method based on the multi-cam module under near infrared environment and system thereof, wherein in focussing process, constantly the focusing parameter of multiple described camera is contrasted by special software, judge that described multi-cam module is defective during data difference predetermined extent, thus solve same module, the matching difference described in each between camera.
For reaching above object, the invention provides a kind of focus adjustment method based on the multi-cam module under near infrared environment, described multi-cam module comprises multiple camera, and it is characterized in that, described method comprises the steps:
(a) infrared light arrive test mark version after through reflection enter described multi-cam module each described in camera;
B () carries out focus operations by focusing handwheel to described camera; And
(c) send camera collection described in each to image information process to analytic centre, and determine whether to proceed next step focus operations or judge that described multi-cam module is defective according to result.
According to an example of the present invention, in the above-mentioned methods, above-mentioned steps (b) and step (c) is repeated, until focused.
According to an example of the present invention, in the above-mentioned methods, described focus adjustment method carries out in focusing camera bellows, to avoid the interference of veiling glare, also comprises step in described step (a): send infrared light by the one or more infrared light supplies be arranged in described focusing camera bellows towards described test mark version.
According to an example of the present invention, in the above-mentioned methods, also comprise step: the bottom surface described test mark version being fixed on the fixed head of mark plate rack, mark version to make described test and arrange towards described infrared light seedbed.
According to an example of the present invention, in the above-mentioned methods, also comprise step: the reinforced frame consisted of multiple fixing rib extended along orthogonal directions prevents described fixed head flexural deformation, thus makes described fixed head provide flat bottom surface.
According to an example of the present invention, in the above-mentioned methods, in described step (b), camera described in each is equipped with a corresponding focusing handwheel, thus is able to side by side carry out described focus operations to multiple described camera.
According to an example of the present invention, in the above-mentioned methods, before described focus operations carries out, also comprise step: described multi-cam module is removably fixed on focusing tool, described multi-cam module can be connected to described analytic centre communicatedly by p-wire.
According to an example of the present invention, in the above-mentioned methods, also step is comprised: focusing Kong Weizhong focusing handwheel described in each being installed on the focusing handwheel fixed head of described focusing tool.
According to an example of the present invention, in the above-mentioned methods, also comprise step: by the display device of described analytic centre, with in real time and side by side show the test result of camera described in each.
According to an example of the present invention, in the above-mentioned methods, also comprise step: the test result of camera described in each compared, when camera described in each for the difference degree of test result of the same area of described test mark version at a preset range time, judge that described multi-cam module focusing is qualified.
According to an example of the present invention, in the above-mentioned methods, also comprise step: the focusing parameter for camera described in each is compared, during difference more than 5, judge that focusing result is defective.
According to an example of the present invention, in the above-mentioned methods, also comprise step: described infrared light supply and described focusing tool are installed on fixed base plate, described fixed base plate is arranged in described focusing camera bellows.
According to an example of the present invention, in the above-mentioned methods, described infrared light supply is infrared LED light source, and four described infrared light supplies are arranged at the corner of described fixed base plate respectively, and described focusing tool is arranged on the approximate centre region of described fixed base plate.
According to an example of the present invention, in the above-mentioned methods, also comprise step: the slip locating piece promoting described focusing tool slidably, so that the connector of described multi-cam module is docked with the interface of described p-wire or to be separated, wherein said multi-cam module is removably installed in described slip locating piece.
According to an example of the present invention, in the above-mentioned methods, also comprise step: along infrared light supply described in slide, to adjust the position of infrared light supply described in each.
According to an example of the present invention, in the above-mentioned methods, described guide rail comprises dual orbiting vane.
According to an example of the present invention, in the above-mentioned methods, described test mark version is printed by art post paperboard.
According to an example of the present invention, in the above-mentioned methods, described art post paperboard whiteness is 82%-87%, and printer ink is UV curable ink, and the size of described test mark version is 700 × 1100mm, and in described mark version, every bar line live width is 3mm.
According to an example of the present invention, in the above-mentioned methods, described multi-cam module is dual camera module, and it comprises two described cameras, in described step (b), respectively described focus operations is carried out to two described cameras by two described focusing handwheels.
According to a further aspect in the invention, the present invention also provides a kind of focusing system based on the multi-cam module under near infrared environment, and described multi-cam module comprises multiple camera, and described focusing system comprises:
At least one infrared light supply, to provide infrared light;
At least one test mark version;
At least one focusing handwheel, described focusing handwheel carries out focus operations to described camera; And
At least one analytic centre, wherein said multi-cam module can be connected to described analytic centre communicatedly, and wherein said infrared light supply and described multi-cam module are positioned at the same side of described test mark version.
According to an example of the present invention, in above-mentioned focusing system, also comprise a focusing camera bellows, described focusing camera bellows has focusing room, and described focus operations carries out in described focusing room, to avoid light disturbance.
According to an example of the present invention, in above-mentioned focusing system, also comprise a mark plate rack, two opposition sides of described focusing camera bellows are respectively arranged with one or more groups positioning convex arranged apart from one another by ground, for the described mark plate rack of installation, wherein positioning convex described in each extends from the inside surface outwardly convex of the both sides of the focusing camera bellows of correspondence, forms locating slot between adjacent two described positioning convex.
According to an example of the present invention, in above-mentioned focusing system, also comprise a mark plate rack, two opposition sides of described focusing camera bellows are respectively arranged with one or more groups detent arranged apart from one another by ground, for the described mark plate rack of installation.
According to an example of the present invention, in above-mentioned focusing system, described mark plate rack comprises a fixed head, described test mark version be fixed on described fixed head surface and towards described multi-cam module.
According to an example of the present invention, in above-mentioned focusing system, described test mark version is pasted on the basal surface of described fixed head, described mark plate rack also comprises a reinforced frame, to prevent described fixed head flexural deformation, wherein said reinforced frame comprises multiple fixing rib extended along mutually perpendicular direction.
According to an example of the present invention, in above-mentioned focusing system, multiple described fixing rib comprises at least one horizontal fixing rib and at least one longitudinal fixing rib, and the two ends of horizontal fixing rib described in each are connected to corresponding at least one described longitudinal fixing rib.
According to an example of the present invention, in above-mentioned focusing system, also comprise a fixed base plate, described infrared light supply is installed on described fixed base plate, and described fixed base plate is arranged in the face of described test mark version ground.
According to an example of the present invention, in above-mentioned focusing system, also comprise a focusing tool, described focusing tool and described infrared light supply are installed on described fixed base plate,
Described focusing tool comprises:
One slip locating piece, described multi-cam module is removably installed in described slip locating piece;
One focusing handwheel fixed head, it has position, one or more focusing hole, to be respectively used to install described focusing handwheel; And
One p-wire, described multi-cam module can be connected with described analytic centre communicatedly by described p-wire, when promoting the slip locating piece of described focusing tool slidably, the connector of described multi-cam module is docked with the interface of described p-wire or separates.
According to an example of the present invention, in above-mentioned focusing system, described infrared light supply is infrared LED light source, and multiple described infrared light supply is arranged in an infrared LED array of source on described fixed base plate.
According to an example of the present invention, in above-mentioned focusing system, multiple described infrared LED light sources lay respectively at the corner of described fixed base plate, and described focusing tool is arranged on the approximate centre region of described fixed base plate.
According to an example of the present invention, in above-mentioned focusing system, described fixed base plate is also provided with one or more guide rail, and infrared radiation source described in each at described slide on rails, thus adjusts its position.
According to an example of the present invention, in above-mentioned focusing system, guide rail described in each has a cross track and a longitudinal conduit.
According to an example of the present invention, in above-mentioned focusing system, described test mark version is printed by art post paperboard, described art post paperboard whiteness is 82%-87%, printer ink is UV curable ink, and the size of described test mark version is 700 × 1100mm, and in described mark version, every bar line live width is 3mm.
According to an example of the present invention, in above-mentioned focusing system, focusing handwheel described in each comprises a swing handle and extends a location division of described swing handle, forms pilot hole in described location division, and described location division has one or more positioning tooth along the inside surface of described pilot hole.
According to an example of the present invention, in above-mentioned focusing system, described analytic centre comprises at least one display device, and described display device provides multiple viewing area, with in real time and side by side show the test result of camera described in each.
According to an example of the present invention, in above-mentioned focusing system, described display device also provides a comparison result viewing area, to show the test result of multiple described camera for the same area of same described test mark version, if the difference degree of test result is when a preset range, judge that described multi-cam module focusing is qualified, thus strengthen the consistance of described multi-cam module.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the focusing system based on the multi-cam module under near infrared environment according to a preferred embodiment of the present invention.
Fig. 2 is the skeleton view of the focusing camera bellows of the focusing system based on the multi-cam module under near infrared environment according to above preferred embodiment of the present invention.
Fig. 3 is the decomposing schematic representation of the target frame of the focusing system based on the multi-cam module under near infrared environment according to above preferred embodiment of the present invention.
Fig. 4 is the skeleton view of the fixed base plate of the focusing system based on the multi-cam module under near infrared environment according to above preferred embodiment of the present invention.
Fig. 5 is the skeleton view of the focusing handwheel of the focusing system based on the multi-cam module under near infrared environment according to above preferred embodiment of the present invention.
Fig. 6 is the skeleton view of the focusing tool of the focusing system based on the multi-cam module under near infrared environment according to above preferred embodiment of the present invention.
Fig. 7 is the skeleton view according to the test mark version of the focusing system based on the multi-cam module under near infrared environment of above preferred embodiment of the present invention and mark plate rack.
Fig. 8 is the workflow schematic diagram of the focusing software of the focusing system based on the multi-cam module under near infrared environment according to above preferred embodiment of the present invention.
Fig. 9 is the schematic diagram of the analytic centre of the focusing system based on the multi-cam module under near infrared environment according to above preferred embodiment of the present invention.
Figure 10 is the workflow schematic diagram of the focus adjustment method based on the multi-cam module under near infrared environment according to above preferred embodiment of the present invention.
Embodiment
Below describe and realize the present invention for disclosing the present invention to enable those skilled in the art.Preferred embodiment in below describing only as an example, it may occur to persons skilled in the art that other apparent modification.The ultimate principle of the present invention defined in the following description can be applied to other embodiments, deformation program, improvement project, equivalent and not deviate from the other technologies scheme of the spirit and scope of the present invention.
Be the focusing system based on the multi-cam module under near infrared environment according to a preferred embodiment of the present invention as shown in Figures 1 to 7, it comprises focusing camera bellows 10, mark plate rack 20, test mark version 30, infrared light supply 40, focusing tool 50, analytic centre 60.Described multi-cam module comprises multiple camera, described focusing system is suitable for carrying out focusing calibration to multiple described camera in real time, multiple described camera can comprise two, three or more described cameras, in this preferred embodiment, for two described cameras, namely described multi-cam module can be a dual camera module.
More specifically, described focusing camera bellows 10 provides a focusing room 11 in focussing process, its can by multiple panel 12 around and formed.Described focusing room 11 forms relatively airtight space, to prevent extraneous veiling glare impact focusing measuring accuracy.That is, in focussing process, in described focusing room 11, only has the infrared light that described infrared light supply 40 sends.As shown in Figure 2, described focusing camera bellows 10 has the many groups positioning convex 13 arranged apart from one another by ground in relative both sides, and positioning convex 13 described in each extends from the inside surface outwardly convex of the both sides of the focusing camera bellows 10 of correspondence.Such as, in the example shown in Fig. 2, multiple described panel 12 comprises Left-Hand Panel 121 and a right panel 122.Often organize described positioning convex 13 to comprise from the outward extending left positioner projection 131 of the inside surface of described Left-Hand Panel 121, and from the outward extending right positioner projection 132 of the inside surface of described right panel 122.Described left positioner protruding 131 and protruding 132 positions of right positioner arrange accordingly, namely arrange symmetrically mutually, in this example, described left positioner protruding 131 and right positioner projection 132 are positioned at same height, and positioning convex 13 described in such a group may be used for fixing described mark plate rack 20.
The two ends of described mark plate rack 20 can be placed on positioning convex 13 described in corresponding a group.It is worth mentioning that, in same side, adjacent described positioning convex 13 can form locating slot 14.Preferably, the size of described locating slot 14 can be mated with the size at the two ends of described mark plate rack 20, thus when the two ends of described mark plate rack 20 to be placed on corresponding described positioning convex 13 and after being arranged in described locating slot 14, described mark plate rack 20 is firmly fixed in described focusing camera bellows 10.
In addition, often organize described positioning convex 13 highly different, can adjust the fixed position of described mark plate rack 20 like this, thus the distance between described mark plate rack 20 and described multi-cam module to be focused can adjust, the described multi-cam module required with applicable different focal.
It is worth mentioning that, described focusing camera bellows 10 needs provide the fixed sturcture fixing described mark plate rack 20.Shape and the size of positioning convex 13 described in each are unrestricted, such as, can be strip, and sheet is shaft-like etc.In addition, what it may occur to persons skilled in the art that is, also other fixed sturcture can be adopted to fix described mark plate rack 20, such as described focusing camera bellows 10 both sides can have the detent concaved from inner surface arranged apart from one another by ground, the two ends of described mark plate rack 20 are suitable for being contained in corresponding described detent, thus play the effect of locating described mark plate rack 2.
As shown in Figure 3, described mark plate rack 20 comprises a fixed head 21, and described fixed head 21 is for fixing described test mark version 30.In the example shown in Fig. 3, when described focusing camera bellows 10 above-below direction is placed, described test mark version 30 is fixed on the lower surface of described fixed head 21, and fixing mode can adopt stickup, or utilizes other retaining elements as screw etc.The dual-side 211 of described fixed head 21 is contained in the locating slot 14 of described focusing camera bellows 10 both sides respectively, thus plays the effect of location.
It is worth mentioning that, described mark plate rack 20 also comprises multiple fixing rib 22 arranged orthogonally, and fixing rib 22 described in each is fixed on the upper surface of described fixed head 21.That is, multiple described fixing rib 22 marks with described test the both sides that version 30 is positioned at described fixed head 21.Multiple described fixing rib 22 arranged plays the effect of straining described fixed head 21 orthogonally, thus prevents the flexural deformation of described fixed head 21, and described like this fixed head 21 is provided a flat bottom surface, for fixing described test mark version 30.In this preferred embodiment in figure 3, multiple described fixing rib 22 arranged orthogonally comprise horizontal fixing rib 221 that three parallel to each other and compartment of terrains arrange and two longitudinal fixing rib, 222, two described longitudinal fixing rib 222 also parallel to each other and arrange apart from one another by ground.Described horizontal fixing rib 221 and corresponding described longitudinal fixing rib 222 extend along mutually perpendicular direction and link together, thus define a reinforced frame.That is, described reinforced frame is arranged on the upper surface of described fixed head 21, for preventing the flexural deformation of described fixed head 21, thus described fixed head 21 is provided smooth lower surface, when described like this test mark version 30 is fixed on the lower surface of described fixed head 21, entirely extended, to improve measuring accuracy.
Fixing rib 22 described in each can be strip, sheet, shaft-like etc.In the example shown in Fig. 3, described in each, the two ends 2211 and 2212 of horizontal fixing rib 221 are connected to the inside surface of two described longitudinal fixing rib 222.That is, two described longitudinal fixing rib 222 are connected to the two ends of three described horizontal fixing rib 221.It is conceivable that, longitudinal fixing rib 222 described in each also vertically can extend from the local of the described horizontal fixing rib 221 of correspondence or center, the reinforced frame that described horizontal fixing rib 221 and described longitudinal fixing rib 222 are formed according to different arrangements, prevents the flexural deformation of described fixed head 21 as long as can play.
Described reinforced frame can extend described fixed head 21 integratedly, also can by other retaining elements as the retaining element such as screw, rivet be fixed on as described on fixed head 21.Multiple described fixing rib 22 arranged can connect orthogonally integratedly, also can by other retaining elements as the retaining element such as screw, rivet is fixed together.
After the infrared light arrival described test mark version 30 of described infrared light supply 40, enter camera described in each after reflection.Therefore described infrared light supply 40 and described multi-cam module to be tested are positioned at the same side of described test mark version 30, and in tradition mark version projection focus adjustment method, the light of planar light source arrives camera again through tradition mark version, thus planar light source and camera are the both sides laying respectively at tradition mark version, and tradition mark version is made up of transmitance material.
In this preferred embodiment of the present invention, the infrared light of described infrared light supply 40 after reflection gather by camera described in each, each position of the described test mark version 30 of such correspondence has infrared light to arrive and reflection enters in camera described in each, and described like this test mark version 30 can be full of the test pictures of camera described in each.
As shown in Figure 4, described infrared light supply 40 can be arranged on the bottom of described focusing camera bellows 10, such as, can be placed on the base plate of described focusing camera bellows 10.In this preferred embodiment of the present invention, described focusing system also comprises a fixed base plate 70, and the bottom of described focusing camera bellows 10 is placed or be arranged on to described fixed base plate 70, and four described infrared light supplies 40 are evenly distributed in the corner of described fixed base plate 70.It is worth mentioning that, the quantity of described infrared light supply 40 also can be other quantity beyond 4, as two, three, five, six etc.Multiple described infrared light supply 40 forms infrared light supply array
Infrared light supply 40 described in each is the light sources that can provide infrared light, and as an example, infrared light supply 40 described in each is infrared LED light sources.And infrared light supply 40 described in each can comprise one or more infrared LED light-emitting component, when infrared light supply described in each 40 comprises multiple infrared LED light-emitting component, multiple infrared LED light-emitting component forms an infrared LED light emitting array.As an example, infrared LED light-emitting component described in each can be the LED infrared lamp of 850nm wave band.
It is worth mentioning that, planar light source is used in tradition focus adjustment method, and in the present invention, only need the described infrared light supply 40(using multiple point-like to arrange as in this preferred embodiment, be positioned at four described infrared LED light sources of corner), namely multiple described camera can be made to complete image acquisition, and described test can be allowed to mark version 30 and to be full of test pictures, thus greatly reduce the production cost required for focusing test.
As shown in Figure 4, described fixed base plate 70 comprises the corner that a floor body 71, four described infrared light supplies 40 are positioned at described floor body 71.It is worth mentioning that, described fixed base plate 70 is also respectively arranged with guide rail 72 in corner, for the position regulating corresponding described infrared light supply 40.More specifically, in the example shown in Figure 4, guide rail 72 described in each is dual cross guide rails.Particularly, guide rail 72 described in each can comprise cross track 721 and long rails 722, the described infrared light supply 40 of each correspondence can slide along described cross track 721 and described long rails 722, thus its position can be adjusted, make the sensitive chip in camera described in each can receive enough infrared lights.
In addition, be also provided with stationary installation 73 in the middle position of described fixed base plate 70, for fixing described focusing tool 50, wherein said focusing tool 50 is for carrying out focus operations to camera described in each.In the preferred embodiment, stationary installation 73 comprises three right angle fixed blocks, it is respectively by retaining element as screw, and rivet or concave-convex fit structure etc. are fixed with described focusing tool 50, thus described focusing tool 50 is positioned at the position of the approximate centre of described fixed base plate 70.
As shwon in Figures 5 and 6, described focusing tool 50 comprises a tool main body 51, and it is connected with described stationary installation 73, to play positioning action.Described focusing tool 50 also comprises the slip locating piece 52 be slidably disposed in described tool main body 51, multiple focusing handwheel 53, focusing handwheel fixed head 54, and p-wire 55.In this preferred embodiment, described focusing tool 50 is for focusing to dual camera module, thus it comprises two described focusing handwheels 53, described focusing handwheel fixed head 54 has two focusing positions, hole 541, coordinate for corresponding described focusing handwheel 53, thus be that corresponding described camera carries out focus operations.
Focusing handwheel 53 described in each can be integral type copper piece, it location division 532 comprising swing handle 531 and extend described swing handle 531, form pilot hole 533 in described location division 532, and described location division 532 has one or more positioning tooth 534 along the inside surface of described pilot hole 533.In use, user can use finger as thumb and finger hold as described in swing handle 531 as described in focusing handwheel 53 come turn corresponding as described in camera, described pilot hole 533 is for putting into described camera, described positioning tooth 534 is for blocking described camera, thus when making focusing handwheel 53 described in turn, described camera can not be slided tooth or run.It is worth mentioning that, the structure of described focusing handwheel 53 only as an example, time in actual applications, can be selected suitable focusing handwheel as required or improve this focusing handwheel 53 of this preferred embodiment.
When focusing, described multi-cam module is removably fixed on described slip locating piece 52, such as put into the pickup groove 521 of described slip locating piece 52, described slip locating piece 52 can also be provided with one or more setting element 522, can be such as reference column, for the location of described multi-cam module.Promote described slip locating piece 52, the connector of described multi-cam module is docked with the interface of described p-wire 55, thus described multi-cam module enters duty.Described focusing handwheel fixed head 54 is positioned at the upside suitable location of described multi-cam module, is suitable for carrying out focus operations to the camera of the correspondence of the described multi-cam module being positioned at downside to make focusing handwheel 53 described in each.At the end of focusing, promote described slip locating piece 52, with the interface making the connector of described multi-cam module leave described p-wire 55, then described multi-cam module is able to take off from described slip locating piece 52.
It is worth mentioning that, in focussing process, described focusing handwheel fixed head 54 keeps the position between described focusing handwheel 53 and the described camera of correspondence, thus realizes spacing focus operations, and prevents the eyeglass of described camera to be scratched.
In addition, the test mark version 30 used in this embodiment of the present invention as shown in Figure 7, as an example, described test mark version 30 adopts art post paperboard to print, because described infrared light supply adopts 850nm wave band LED infrared lamp, consider that reflection can cause imaging facula, therefore the whiteness of art post paperboard does not need too high, namely too high whiteness, the whiteness such as the A of such as more than 92%, can be excessively bright in vain, do not utilize catoptric imaging, place in this preferred embodiment, art post paperboard whiteness requires to select 82%, printer ink can be UV curable ink (UV ink).
Described test mark version 30 is fixed on (mark version silk-screen faces down) bottom described mark plate rack 20, more specifically, can be the basal surface of the fixed head 21 being pasted onto described mark plate rack 20.Described test mark version size can be arranged as required, such as 700x1100mm, and the every bar line live width in described test mark version 30 is 3mm, and line is to being covered with in whole described test mark version 30 region.It is worth mentioning that, the test mark version 30 used in this embodiment of the present invention only as an example, can use other satisfactory mark versions in actual applications as required.
Described analytic centre 60 is connected to described p-wire 55, carries out showing and analyzing for exchanging close-burning fruit.Particularly, described analytic centre 60 comprises a display device 61, for showing test result to user.In this preferred embodiment, described analytic centre 60 can be a computer, described display device 61 is computer display screens, and in this preferred embodiment, described multi-cam module is dual camera module, described display device 61 comprises the first viewing area 612, viewing area 611, second, and the 3rd viewing area 613.Described first viewing area 611 shows data and the result of first camera, and described second viewing area 612 shows data and the result of second camera, and described 3rd viewing area 613 shows the data of the first and second cameras and the comparison result of result.
As shown in figs. 8 and 9, be this preferred embodiment of the present invention the test procedure 62 of described analytic centre 60.It to increase consistance, eliminates the difference between two cameras for the display of image result in described display device 61 that control dual camera module and the parameter comparison of carrying out between two cameras.
According to this preferred embodiment, described test procedure 62 depends on a special software (TestBed.EXE) and realizes, and its concrete operation method can carry out in the following manner.
(1) open " TestBed.EXE ", first click interface button " START ", software will call " Unlocker " voluntarily, and shows digraph.
(2) use button " 1 " to close image, button " 2 " is opened image and is carried out focusing functional test.
(3) be divided into upper and lower two parts in display result, the data of upper part display and result (OK/NG) are tested left figure and are obtained; The data of lower part display and result (OK/NG) are tested right figure and are obtained; Wherein, two figure homogeneitys are degree that test two figure differs in the same area, and in the same area, the data difference <=5 of two figure, then regard as OK.
(4) click runnable interface " EXIT " and exit software.
It is worth mentioning that, because the infrared light of described infrared light supply 40 of the present invention enters camera described in each by reflection, thus in display image in test pictures, described test mark version 30 is full of whole test pictures.In this object lesson of the present invention, the upper part in display result is as described first viewing area 611, and lower part display result is as described second viewing area 612, and middle two figure are as described 3rd viewing area 613.It is worth mentioning that, the arrangement mode of display result is not restricted, as long as it can show the test result of two described cameras in real time and compare to it.
The present invention is directed to two or more described camera and provide comparison operation, the consistance of whole module can be made like this to be strengthened, and when testing, being can carry out focusing calibration to two or more described camera simultaneously, improve focusing efficiency.It is worth mentioning that, the data difference 5 of above-mentioned focusing parameter only as an example, and is not restricted in the present invention, as required, also can set in actual applications.
Correspondingly, the workflow of focus operations of the present invention as shown in Figure 10, described focusing tool 50 can be connected communicatedly with described analytic centre 60, then described infrared light supply 40 is opened, and run the special software of described analytic centre 60, described multi-cam module group assembling is on described focusing tool 50, the described display device 61 of described analytic centre 60 demonstrates test pattern, then according to the image demonstrated, described focusing handwheel 53 is used to carry out focus operations for camera described in each, according to software prompt, judge that whether described multi-cam module is qualified, finally take off described multi-cam module from described focusing tool 50, and described multi-cam module is carried out quality classification.
Therefore, the invention provides a kind of focus adjustment method based on the multi-cam module under near infrared environment, described multi-cam module comprises multiple camera, and described method comprises the steps:
(a) infrared light arrive test mark version 30 after through reflection enter described multi-cam module each described in camera;
B () carries out focus operations by focusing handwheel 53 to described camera; And
(c) send camera collection described in each to image information be sent to analytic centre 60 and process, and determine whether to proceed next step focus operations or judge that described multi-cam module is defective according to result.
Above-mentioned steps (b) and step (c) can repeat, until focused.
In described step (a), can send infrared light by multiple infrared LED light source 40 to described test mark version 30, described test mark version 30 is fixed on the bottom surface of the fixed head 21 of mark plate rack 20.Described fixed head 21 prevents its flexural deformation by the reinforced frame be made up of multiple fixing rib vertically extended.
In described step (b), camera described in each is equipped with a corresponding focusing handwheel 53.And described focusing handwheel 53 is arranged in the position, focusing hole 541 of the focusing handwheel fixed head 54 of focusing tool 50.
One skilled in the art will understand that the embodiments of the invention shown in foregoing description and accompanying drawing only limit the present invention as an example and not.Object of the present invention is complete and effectively realize.Function of the present invention and structural principle are shown in an embodiment and are illustrated, do not deviating under described principle, embodiments of the present invention can have any distortion or amendment.
Claims (36)
1., based on a focus adjustment method for the multi-cam module under near infrared environment, described multi-cam module comprises multiple camera, it is characterized in that, described method comprises the steps:
(a) infrared light arrive test mark version after through reflection enter described multi-cam module each described in camera;
B () carries out focus operations by focusing handwheel to described camera; And
(c) send camera collection described in each to image information process to analytic centre, and determine whether to proceed next step focus operations or judge that described multi-cam module is defective according to result.
2. as described in claim 1 based on the focus adjustment method of the multi-cam module under near infrared environment, it is characterized in that, repeat above-mentioned steps (b) and step (c), until focused.
3. as described in claim 1 based on the focus adjustment method of the multi-cam module under near infrared environment, it is characterized in that, described focus adjustment method carries out in focusing camera bellows, to avoid the interference of veiling glare, in described step (a), also comprise step: send infrared light by the one or more infrared light supplies be arranged in described focusing camera bellows towards described test mark version.
4. as the focus adjustment method based on the multi-cam module under near infrared environment as described in arbitrary in claims 1 to 3, it is characterized in that, also comprise step: the bottom surface described test mark version being fixed on the fixed head of mark plate rack, mark version to make described test and arrange towards described infrared light seedbed.
5. as described in claim 4 based on the focus adjustment method of the multi-cam module under near infrared environment, it is characterized in that, also comprise step: the reinforced frame consisted of multiple fixing rib extended along orthogonal directions prevents described fixed head flexural deformation, thus makes described fixed head provide flat bottom surface.
6. as described in claim 4 based on the focus adjustment method of the multi-cam module under near infrared environment, it is characterized in that, in described step (b), camera described in each is equipped with a corresponding focusing handwheel, thus is able to side by side carry out described focus operations to multiple described camera.
7. as described in claim 6 based on the focus adjustment method of the multi-cam module under near infrared environment, it is characterized in that, before described focus operations carries out, also comprise step: described multi-cam module is removably fixed on focusing tool, described multi-cam module can be connected to described analytic centre communicatedly by p-wire.
8., as described in claim 7 based on the focus adjustment method of the multi-cam module under near infrared environment, it is characterized in that, also comprise step: focusing Kong Weizhong focusing handwheel described in each being installed on the focusing handwheel fixed head of described focusing tool.
9. as described in claim 1 based on the focus adjustment method of the multi-cam module under near infrared environment, it is characterized in that, also comprise step: by the display device of described analytic centre, with in real time and side by side show the test result of camera described in each.
10. as described in claim 2 based on the focus adjustment method of the multi-cam module under near infrared environment, it is characterized in that, also comprise step: the test result of camera described in each compared, when camera described in each for the difference degree of test result of the same area of described test mark version at a preset range time, judge that described multi-cam module focusing is qualified.
11., as described in claim 2 based on the focus adjustment method of the multi-cam module under near infrared environment, is characterized in that, also comprise step: the focusing parameter for camera described in each is compared, and judge that focusing result is defective during difference more than 5.
12. as described in claim 8 based on the focus adjustment method of the multi-cam module under near infrared environment, it is characterized in that, also comprise step: described infrared light supply and described focusing tool are installed on fixed base plate, described fixed base plate is arranged in described focusing camera bellows.
13. as described in claim 12 based on the focus adjustment method of the multi-cam module under near infrared environment, it is characterized in that, described infrared light supply is infrared LED light source, and four described infrared light supplies are arranged at the corner of described fixed base plate respectively, described focusing tool is arranged on the approximate centre region of described fixed base plate.
14. as described in claim 12 based on the focus adjustment method of the multi-cam module under near infrared environment, it is characterized in that, also comprise step: the slip locating piece promoting described focusing tool slidably, so that the connector of described multi-cam module is docked with the interface of described p-wire or to be separated, wherein said multi-cam module is removably installed in described slip locating piece.
15., as described in claim 13 based on the focus adjustment method of the multi-cam module under near infrared environment, is characterized in that, also comprise step: along infrared light supply described in slide, to adjust the position of infrared light supply described in each.
16. as described in claim 15 based on the focus adjustment method of the multi-cam module under near infrared environment, and it is characterized in that, described guide rail comprises dual orbiting vane.
17., as the focus adjustment method based on the multi-cam module under near infrared environment as described in arbitrary in claims 1 to 3, is characterized in that, described test mark version is printed by art post paperboard.
18. as described in claim 17 based on the focus adjustment method of the multi-cam module under near infrared environment, it is characterized in that, described art post paperboard whiteness is 82%-87%, printer ink is UV curable ink, the size of described test mark version is 700 × 1100mm, and in described mark version, every bar line live width is 3mm.
19. as the focus adjustment method based on the multi-cam module under near infrared environment as described in arbitrary in claims 1 to 3, it is characterized in that, described multi-cam module is dual camera module, it comprises two described cameras, in described step (b), respectively described focus operations is carried out to two described cameras by two described focusing handwheels.
20. 1 kinds of focusing systems based on the multi-cam module under near infrared environment, described multi-cam module comprises multiple camera, and it is characterized in that, described focusing system comprises:
At least one infrared light supply, to provide infrared light;
At least one test mark version;
At least one focusing handwheel, described focusing handwheel carries out focus operations to described camera; And
At least one analytic centre, wherein said multi-cam module can be connected to described analytic centre communicatedly, and wherein said infrared light supply and described multi-cam module are positioned at the same side of described test mark version.
21. as described in claim 20 based on the focusing system of the multi-cam module under near infrared environment, it is characterized in that, also comprise a focusing camera bellows, described focusing camera bellows has focusing room, described focus operations carries out in described focusing room, to avoid light disturbance.
22. focusing systems based on the multi-cam module under near infrared environment as described in claim 21, it is characterized in that, also comprise a mark plate rack, two opposition sides of described focusing camera bellows are respectively arranged with one or more groups positioning convex arranged apart from one another by ground, for the described mark plate rack of installation, wherein positioning convex described in each extends from the inside surface outwardly convex of the both sides of the focusing camera bellows of correspondence, forms locating slot between adjacent two described positioning convex.
23. focusing systems based on the multi-cam module under near infrared environment as described in claim 21, it is characterized in that, also comprise a mark plate rack, two opposition sides of described focusing camera bellows are respectively arranged with one or more groups detent arranged apart from one another by ground, for the described mark plate rack of installation.
24. focusing systems based on the multi-cam module under near infrared environment as described in claim 22 or 23, it is characterized in that, described mark plate rack comprises a fixed head, described test mark version be fixed on described fixed head surface and towards described multi-cam module.
25. as described in claim 4 based on the focusing system of the multi-cam module under near infrared environment, it is characterized in that, described test mark version is pasted on the basal surface of described fixed head, described mark plate rack also comprises a reinforced frame, to prevent described fixed head flexural deformation, wherein said reinforced frame comprises multiple fixing rib extended along mutually perpendicular direction.
26. focusing systems based on the multi-cam module under near infrared environment as recited in claim 25, it is characterized in that, multiple described fixing rib comprises at least one horizontal fixing rib and at least one longitudinal fixing rib, and the two ends of horizontal fixing rib described in each are connected to corresponding at least one described longitudinal fixing rib.
27. as the focusing system based on the multi-cam module under near infrared environment as described in arbitrary in claim 20 to 23, it is characterized in that, also comprise a fixed base plate, described infrared light supply is installed on described fixed base plate, and described fixed base plate is arranged in the face of described test mark version ground.
28. as claimed in claim 27 based on the focusing system of the multi-cam module under near infrared environment, and it is characterized in that, also comprise a focusing tool, described focusing tool and described infrared light supply are installed on described fixed base plate, and described focusing tool comprises:
One slip locating piece, described multi-cam module is removably installed in described slip locating piece;
One focusing handwheel fixed head, it has position, one or more focusing hole, to be respectively used to install described focusing handwheel; And
One p-wire, described multi-cam module can be connected with described analytic centre communicatedly by described p-wire, when promoting the slip locating piece of described focusing tool slidably, the connector of described multi-cam module is docked with the interface of described p-wire or separates.
29. as claimed in claim 27 based on the focusing system of the multi-cam module under near infrared environment, it is characterized in that, described infrared light supply is infrared LED light source, and multiple described infrared light supply is arranged in an infrared LED array of source on described fixed base plate.
30. as claimed in claim 29 based on the focusing system of the multi-cam module under near infrared environment, it is characterized in that, multiple described infrared LED light sources lay respectively at the corner of described fixed base plate, and described focusing tool is arranged on the approximate centre region of described fixed base plate.
31. as claimed in claim 29 based on the focusing system of the multi-cam module under near infrared environment, and it is characterized in that, described fixed base plate is also provided with one or more guide rail, and infrared radiation source described in each at described slide on rails, thus adjusts its position.
32. as claimed in claim 31 based on the focusing system of the multi-cam module under near infrared environment, and it is characterized in that, guide rail described in each has a cross track and a longitudinal conduit.
33. as claimed in claim 20 based on the focusing system of the multi-cam module under near infrared environment, it is characterized in that, described test mark version is printed by art post paperboard, described art post paperboard whiteness is 82%-87%, printer ink is UV curable ink, the size of described test mark version is 700 × 1100mm, and in described mark version, every bar line live width is 3mm.
34. as claimed in claim 20 based on the focusing system of the multi-cam module under near infrared environment, it is characterized in that, focusing handwheel described in each comprises a swing handle and extends a location division of described swing handle, form pilot hole in described location division, and described location division has one or more positioning tooth along the inside surface of described pilot hole.
35. as claimed in claim 20 based on the focusing system of the multi-cam module under near infrared environment, it is characterized in that, described analytic centre comprises at least one display device, described display device provides multiple viewing area, with in real time and side by side show the test result of camera described in each.
36. focusing systems based on the multi-cam module under near infrared environment as described in claim 34, it is characterized in that, described display device also provides a comparison result viewing area, to show the test result of multiple described camera for the same area of same described test mark version, if the difference degree of test result is when a preset range, judge that described multi-cam module focusing is qualified, thus strengthen the consistance of described multi-cam module.
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