CN101750693B - Lens assembling and positioning method - Google Patents
Lens assembling and positioning method Download PDFInfo
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- CN101750693B CN101750693B CN200810188123A CN200810188123A CN101750693B CN 101750693 B CN101750693 B CN 101750693B CN 200810188123 A CN200810188123 A CN 200810188123A CN 200810188123 A CN200810188123 A CN 200810188123A CN 101750693 B CN101750693 B CN 101750693B
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Abstract
The invention provides a lens assembling and positioning method which is suitable for positioning a steering angle of a clip of a lens. The method includes the following steps: preposition operation is carried out by a standard lens of a corresponding lens, and a clip characteristic and an auxiliary cross characteristic are retrieved by the standard lens and form a standard characteristic image; positioning operation is carried out on the lens, an outline image of the lens is retrieved, and comparison is carried out between the standard characteristic image and the outline image so as to obtain the steering angle of the clip of the lens. Or the method includes the following steps: circumferential projection is carried out on the lens to obtain a rim image which is provided with an uneven zone, and the position of the uneven zone relatively to the rim image is calculated so as to deduce the steering angle of the clip of the lens. The characteristics of the clip can be greatly strengthened by the standard characteristic image or the rim image, so as to improve the exactness of automatically identifying the clip of the lens. Furthermore, automatic lens assembling equipment can be developed to realize full-automatic technique, thereby increasing the assembling finished product rate and capacity.
Description
Technical field
The present invention relates to a kind of lens assembling and positioning method, particularly a kind of automatic judgement eyeglass clip steering angle and the localization method assembled.
Background technology
Show according to research; Mobile phone output with camera function will break through 1,000,000,000 ones in 2008; And reach 10.6 hundred million ones, and the mobile phone with camera function in action the permeability in the telephony market reach 73.6%, annual growth can keep 33.6% high level.Mostly camera model in the mobile phone is mega pixel at present; For presenting the shooting ability of mega pixel; During the employed eyeglass number of camera model is also increased to by 1～2 of low order 3～6 of high-order, the complexity of corresponding camera lens assembling and time also increase thereupon.
Like Fig. 1, in general, eyeglass 50 can have clip 52 (D-Cut), helps the operating personnel with the steering angle of the clip 52 that indicates eyeglass 50 and assembles.With Fig. 1 is example, and this steering angle is with the x direction of principal axis and presss from both sides 0 degree angle.In addition, these specifications of eyeglass 50 of camera lens that are used for mobile phone mostly between 2 millimeters to 6 millimeters, and for avoiding influencing image quality, the scope of clip 52 all not too large (signal is clear lavishes praise on oneself amplification in order to ask among the figure).
The mode of eyeglass assembling in mobile phone now; Be after using magnifier observation eyeglass by the operating personnel; By virtue of experience reach accessory and judge the steering angle of the clip 52 of eyeglass 50; This steering angle is input in the machine, then the eyeglass mounting equipment can rotate to relative position with eyeglass 50 and assemble according to the steering angle of input again.
Yet the operator is lacked experience and tired influence when the steering angle of the clip 52 of judging eyeglass 50 easily, cause that assembling quality is unstable, during operating cost, problem such as production capacity is low.If steering angle judges that gap is excessive, in the process of eyeglass 50 assemblings, cause eyeglass 50 wearing and tearing or broken easily, influence the quality of product.Prior art attempts to orient with the method for image identification the steering angle of the clip 52 of eyeglass 50, yet does not still have feasible localization method to come location assembly lens 50 automatically so far.
Summary of the invention
Technical matters to be solved by this invention provides a kind of lens assembling and positioning method, is suitable for locating the steering angle of the clip of eyeglass, with automatic location assembly lens.The present invention utilizes machine vision technique to develop eyeglass clip positioning system; Cooperate a whole set of capture equipment: technical grade camera, Frame Grabber, camera lens, light emitting diode secondary light source, and make optimal device to eyeglass and dispose, to obtain best eyeglass image; Add combined type lens clip localization method; Accomplish eyeglass clip automatic station-keeping system, replace manually-operated with this system, system is the angle of identification eyeglass clip automatically; Cooperate eyeglass automatic assembling structure, can effectively promote quality and production capacity.
The present invention proposes a kind of lens assembling and positioning method, comprises the following steps: to carry out previous operations with the standard eyeglass of corresponding eyeglass, and the clip characteristic and the auxiliary cross characteristics of acquisition standard eyeglass, and clip characteristic and auxiliary cross characteristics constitute standard characteristic image; And eyeglass positioned operation, capture the contour image of this eyeglass, and, draw the steering angle of the clip of eyeglass through contrast standard characteristic image and contour image.
The present invention proposes a kind of lens assembling and positioning method, comprises the following steps: eyeglass is carried out circumferential projection, and drawing edge images, and edge images has the non-flat forms district; And the position of calculating non-flat forms district opposite edges image is with the steering angle of the clip of release eyeglass.
Technique effect of the present invention is: in lens assembling and positioning method of the present invention, through standard characteristic image or edge images, can significantly strengthen the characteristic of clip, to promote the correctness of automatic identification eyeglass clip.And then can develop automatic eyeglass mounting equipment, realize the technology full automation, to improve assembly yield and production capacity.
Describe the present invention below in conjunction with accompanying drawing and specific embodiment, but not as to qualification of the present invention.
Description of drawings
Fig. 1 is the profile synoptic diagram of eyeglass;
Fig. 2 is the process flow diagram according to the lens assembling and positioning method of one embodiment of the invention;
Fig. 3 A is the profile synoptic diagram of standard eyeglass;
Fig. 3 B is the synoptic diagram of standard characteristic image;
Fig. 4 is the process flow diagram according to the lens assembling and positioning method of another embodiment of the present invention;
Fig. 5 A is the actual sectional drawing of edge images;
Fig. 5 B is the synoptic diagram that carries out circumferential projection.
Wherein, Reference numeral
50: eyeglass
52: clip
60: eyeglass
62: clip
72: the first circumferential areas
74: the second circumferential areas
100: standard characteristic image
C1: clip characteristic
C2: auxiliary cross characteristics
S11～S12, S21～S22: step
Embodiment
Below in conjunction with accompanying drawing structural principle of the present invention and principle of work are done concrete description:
Fig. 2 is the process flow diagram according to the lens assembling and positioning method of one embodiment of the invention.Please refer to Fig. 2 and shown in step S11, S12, lens assembling and positioning method of the present invention mainly comprises previous operations and positioning operation, so that the eyeglass 50 like Fig. 1 is positioned assembling.Below will narrate in detail to previous operations and positioning operation respectively.
In previous operations, at first to let recognition software can learn and be familiar with the character shape of eyeglass 50, could position eyeglass 50.Shown in Fig. 3 A, the present invention is first preparation standard eyeglass 60 specifically, and this standard eyeglass 60 has clip 62, and the size shape of standard eyeglass 60 is consistent with the eyeglass 50 of Fig. 1.Through aforesaid capture equipment just the clip characteristic C1 and the auxiliary cross characteristics C2 of fechtable standard eyeglass 60, and in diagram, indicate these characteristics with dashed region.
The profile of clip 62 is straight lines, and the peripheral profile of standard eyeglass 60 is circular arcs, can be used as the pointer of image identification so straight line and circular arc intersection have the discontinuous situation of slope.Be that clip characteristic C1 is the shape facility of the clip 62 two ends angles variations of the accurate eyeglass 60 of index.
Similar aforementioned; Outwards carry out the profile that cross extends and friendship is got with standard eyeglass 60 centers and be auxiliary cross characteristics C2; And in the present embodiment, one of them direction of cross is set at the direction of standard eyeglass 60 centers towards the clip 62 of standard eyeglass especially, to form the cross shape characteristic.
Clip characteristic C1 is combined with auxiliary cross characteristics C2 just to constitute standard characteristic image 100 and shown in Fig. 3 B.Standard characteristic image 100 is input in the comparison software, can carries out follow-up positioning operation.
In positioning operation, also be the contour image (as shown in Figure 1) that utilizes aforesaid capture equipment acquisition eyeglass 50 earlier, and, can draw the steering angle of the clip 52 of eyeglass 50 through contrast standard characteristic image 100 and contour image.Promptly constantly contour image is rotated specific angle (for example 1 degree), then contour image and standard characteristic image 100 contrasts are seen whether coincide.If can't coincide, then continue the rotation profile image and compare.If reached identical condition, just can push back the steering angle of the clip 52 of eyeglass 50, and then automatically eyeglass 50 rotated to relative position and assemble from the total angle of rotation.
The present invention assembles with the steering angle that the mode of the automatic identification of software is adjusted eyeglass 50, thereby replaces artificial contrast and can significantly promote assembling speed.It should be noted that; The present invention is with standard characteristic image 100 reference as a comparison; Be to utilize the peripheral profile of standard eyeglass 60 to contrast fully in terms of existing technologies; Standard characteristic image 100 filterings are " circular feature " partly, thereby significantly promotes the ratio weight of " shear angle characteristic ".Thereby can effectively promote the accuracy that identification contrasts, to carry out efficient assembling operation.
In addition; In the eyeglass 50 of some small size (for example less than 5 millimeters); Clip 52 can account for eyeglass 50 certain proportions, and makes that the method for ratio weight of aforementioned lifting " shear angle characteristic " is effective especially, but aforesaid method is still applicable in the eyeglass 50 of large scale (for example greater than 5 millimeters).Another lens assembling and positioning method of the present invention below will be detailed, and this lens assembling and positioning method can be applicable to the eyeglass 50 of virtually any size simultaneously.
Fig. 4 is the process flow diagram according to the lens assembling and positioning method of another embodiment of the present invention.Please refer to Fig. 4 and Fig. 1, the lens assembling and positioning method of present embodiment need not carry out previous operations can directly position assembling to eyeglass 50.At first shown in step S21, eyeglass 50 is carried out circumferential projection (ring-warp), drawing the edge images shown in Fig. 5 A, and edge images has non-flat forms district A.
In detail; Present embodiment is shown in Fig. 5 B; Utilize between first circumferential area 72 and second circumferential area 74 scope to eyeglass 50 carry out 360 the degree circumferential projection; Wherein the radius of first circumferential area 72 is the radiuses less than eyeglass 50, and the radius of second circumferential area 74 is the radiuses greater than eyeglass 50, and mind-set eyeglass 50 peripheries are carried out 360 degree circumferential projections and formed the edge images like Fig. 5 A in eyeglass 50.Be that circumferential projection (ring-warp) is the process that a kind of bidimensional image twist transition with arc edge is the one dimension image at horizontal stripe edge, those of ordinary skill in the art should understand easily, repeat no more at this.
In the edge images of Fig. 5 A; Following white block is corresponding scope from first circumferential area 72 to the eyeglass, 50 edges; And the black block relatively is corresponding scope from eyeglass 50 edge to the second circumferential areas 74; Therefore edge, the circular arc of promptly corresponding eyeglass 50 and the clip 52 of white block and the just corresponding eyeglass 50 in black region block boundary place.The black and white block that promptly just can the two-dimensional silhouette edge of eyeglass 50 be changed into one dimension through circumferential projection has a common boundary to strengthen the clip characteristic, makes the clip 52 of the corresponding eyeglass 50 of non-flat forms district A, and the circular arc of other regional corresponding eyeglass 50 of edge images.
Because 360 degree circumference of the corresponding eyeglass 50 of length that edge images is whole; Therefore just can be shown in step S22; The position of calculating non-flat forms district A opposite edges image is with the steering angle of the clip 52 of releasing eyeglass 50, and then automatically eyeglass 50 rotated to relative position and assemble.
Present embodiment also is to assemble with the steering angle that the mode of the automatic identification of software is adjusted eyeglass 50, thereby replaces artificial contrast and can significantly promote assembling speed.In addition, the lens assembling and positioning method of present embodiment is applicable to the eyeglass 50 of various sizes, and accurately eyeglass 50 contrapositions assembled.
In addition, in the present embodiment, non-flat forms district A for example is the depressed area.But in other embodiments, if carry out 360 degree circumferential projections to eyeglass 50 centers, just then non-flat forms district A is a convex area from eyeglass 50 peripheries.Those of ordinary skill in the art understand easily, repeat no more at this.
In sum, lens assembling and positioning method of the present invention has advantage at least:
One, through the clip characteristic of standard characteristic image and edge images tempered lens, effectively the steering angle of identification eyeglass 50 is to assemble;
Two, through combining, can create the benefit that the lens set packing quality promotes and production capacity increases with eyeglass automatic assembling device.
Certainly; The present invention also can have other various embodiments; Under the situation that does not deviate from spirit of the present invention and essence thereof; Those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection domain of the appended claim of the present invention.
Claims (1)
1. lens assembling and positioning method is suitable for locating the steering angle of the clip of an eyeglass, it is characterized in that this lens assembling and positioning method comprises the following step:
Carry out previous operations through a pair of standard eyeglass that should eyeglass, capture a clip characteristic and an auxiliary cross characteristics of this standard eyeglass; Constitute a standard characteristic image through this clip characteristic with assisting cross characteristics; And
Capture a contour image of this eyeglass, and pass through this standard characteristic image of contrast and this contour image, thereby draw the steering angle of the clip of this eyeglass, and then this eyeglass is positioned operation;
Wherein, outwards carry out the profile that cross extends and friendship is got with the standard center of lens and be auxiliary cross characteristics, one of them direction of cross is set at the clip direction of standard eyeglass especially, to form the cross shape characteristic.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810188123A CN101750693B (en) | 2008-12-18 | 2008-12-18 | Lens assembling and positioning method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN200810188123A CN101750693B (en) | 2008-12-18 | 2008-12-18 | Lens assembling and positioning method |
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| CN2012101355026A Division CN102650721A (en) | 2008-12-18 | 2008-12-18 | Lens assembly positioning method |
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| CN101750693A CN101750693A (en) | 2010-06-23 |
| CN101750693B true CN101750693B (en) | 2012-09-05 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102401965A (en) * | 2010-09-17 | 2012-04-04 | 翔元自动化机械有限公司 | Automatic lens assembly machine |
| CN104155737A (en) * | 2014-09-01 | 2014-11-19 | 昆明云锗高新技术有限公司 | Three-pin positioning lens assembling method |
| CN107179593B (en) * | 2017-07-19 | 2020-05-12 | 舜宇光学(中山)有限公司 | Automatic lens core fixing method |
| WO2019169823A1 (en) * | 2018-03-05 | 2019-09-12 | 浙江舜宇光学有限公司 | Lens, method for applying light absorbing coating thereto, and imaging lens |
| CN108415106B (en) * | 2018-03-05 | 2019-09-13 | 浙江舜宇光学有限公司 | Eyeglass and method, the Image lens that light absorption coating is coated with to it |
| CN114076999B (en) * | 2020-08-21 | 2023-08-11 | 宁波舜宇光电信息有限公司 | Periscope type camera shooting module |
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| CN101108563A (en) * | 2006-07-17 | 2008-01-23 | 深圳国宝造币有限公司 | Badge coin transferring framing system and locating method thereof |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101108563A (en) * | 2006-07-17 | 2008-01-23 | 深圳国宝造币有限公司 | Badge coin transferring framing system and locating method thereof |
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| JP特开2003-163163A 2003.06.06 |
| 于京生等.一种改进的车牌定位算法研究.《现代电子技术》.2008,(第14期),第86-87页. * |
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