CN101424519B - Flatness detection device and detection method - Google Patents

Flatness detection device and detection method Download PDF

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Publication number
CN101424519B
CN101424519B CN2007102023084A CN200710202308A CN101424519B CN 101424519 B CN101424519 B CN 101424519B CN 2007102023084 A CN2007102023084 A CN 2007102023084A CN 200710202308 A CN200710202308 A CN 200710202308A CN 101424519 B CN101424519 B CN 101424519B
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China
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plummer
under test
object under
height value
flatness
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CN2007102023084A
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Chinese (zh)
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CN101424519A (en
Inventor
林大为
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鸿富锦精密工业(深圳)有限公司
鸿海精密工业股份有限公司
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Priority to CN2007102023084A priority Critical patent/CN101424519B/en
Publication of CN101424519A publication Critical patent/CN101424519A/en
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Abstract

The invention relates to a method for detecting the planeness, comprising the following steps: an object to be measured is positioned on a carrying table of a bearing device , and the central axis of the object and a central axis of the carrying table are ensured to be positioned on the same straight line; the carrying table is rotated to lead the carrying table to drive the object to be measured to rotate around the central axis of the carrying table; a reference point is selected, the height values of a plurality of measuring points on the detection surface of the object to be measured are continuously measured correspondingly to the reference point, and the rotating angle of the carrying table is recorded; the height values of the measuring points are analyzed to obtain the planeness of the object to be measured. The invention also provides a device for detecting the planeness, which overcomes the defect that the existing device for detecting the planeness of the surface of the object can not take the image of the object that is to be measured and contained in a containing piece.

Description

The pick-up unit of flatness and detection method

Technical field

The present invention relates to the detection technique field, relate in particular to a kind of pick-up unit and detection method of flatness.

Background technology

Camera lens is as the main member of imaging device such as digital camera, video camera and mobile phone cam, and its performance directly influences the quality of image of imaging device, and the image quality of camera lens and camera lens assembling are closely bound up.Camera lens assembling processing procedure comprises lens set is gone in lens barrel; Perhaps organizing the improper non-level of eyeglass that causes in implantation site inserts lens barrel but eyeglass goes into deformation takes place in the process easily in group; This will cause that the eyeglass flatness is relatively poor, and concentricity is not good enough between the eyeglass, and then influence the image quality of camera lens.Therefore, it is imperative that the exploitation lens set is gone into the detection method and the pick-up unit of flatness.Be published in Proceeding of SPIE the 6671st volume, the paper of Optical Manufacturing and Testing VII: An analytical method for measuring the decentration of lens module referring to Chir-weei Chang.

Referring to Fig. 1, it is the synoptic diagram of the pick-up unit 10 of existing body surface flatness.This flatness pick-up unit 10 comprises plummer 11, planar imaging equipment 12 and man-machine interface 13.Plummer 11 has loading end 111, is used to carry object under test 14.Planar imaging equipment 12 is located at object under test 14 1 sides and relative with its side 141, is used for from the side object under test 14 being formed images, and the silhouette of object under test 14 is transferred to man-machine interface 13.Man-machine interface 13 links to each other with planar imaging equipment 12; Be used to receive and analyze the image of object under test 14; And with the image of image format demonstration after data processing module is analyzed; Said image energy is through obtaining the projected image of the detection faces 142 of object under test 14 in its side 141 from a side of object under test 14, thereby learns the flatness of the detection faces 142 of object under test 14.

When detecting the flatness of the object under test of inserting housing piece such as the eyeglass in the lens barrel with flatness pick-up unit 10; Because the imaging light of planar imaging equipment 12 can only project object under test from the side; And eyeglass is contained in the lens barrel; The imaging light that lens barrel can block planar imaging equipment 12 projects eyeglass, causes the planar imaging equipment 12 can not be to the eyeglass capture, whether deformation such as warpage therefore can not testing lens takes place and can not detect the flatness that lens set to be measured is gone into lens barrel.

Summary of the invention

Therefore, a kind of method that fast, accurately detects the flatness of the object under test of inserting housing piece being provided is necessary in fact.

A kind of detection method of flatness below will be described with embodiment.

The detection method of said flatness comprises: the pick-up unit that a kind of flatness is provided; Object under test is placed the plummer of said bogey, and make the central axis of said object under test and the central axis of said plummer be positioned at same straight line; Said controller is controlled said driver and is rotated to drive said plummer; Making said plummer drive said object under test rotates around the central axis of said plummer; Choose reference point; The height value of the relative reference point of a plurality of measurement points on the detection faces of the said object under test of said contactless height measuring device continuous coverage, and measured height value is transferred to said controller; The data processing module of said controller is analyzed the height value of each measurement point; And write down the anglec of rotation of said plummer; The height value of said each measurement point of analysis comprises respectively two coordinate axis that the height value and the plummer anglec of rotation with each measurement point is coordinate system; The figure of the height value of making each measurement point and the corresponding plummer anglec of rotation, thus draw the flatness of said object under test.Said a plurality of measurement point is positioned at a circumference of the detection faces of object under test.

Compared with prior art; The detection method of the flatness of present technique scheme is through the height value of a plurality of measurement points on the detection surface of continuous recording object under test with respect to reference point; And analyze measured height value; Draw the flatness of object under test, so the detection method of present technique scheme have higher detection efficiency and precision.

Description of drawings

Fig. 1 is the user mode synoptic diagram of the pick-up unit of existing body surface flatness.

Fig. 2 is the pick-up unit of the flatness that provides of the embodiment of present technique scheme.

Fig. 3 is the process flow diagram of the detection method of the flatness that provides of the embodiment of present technique scheme.

Fig. 4 is the user mode figure of the pick-up unit of flatness shown in Figure 2.

Fig. 5 A, 5B are flatness device that the embodiment of present technique scheme the provides testing result synoptic diagram when being used to detect eyeglass to be measured.

Embodiment

The pick-up unit and the detection method of the flatness that the present technique scheme is provided below in conjunction with embodiment and accompanying drawing further specify.

Referring to Fig. 2, the synoptic diagram of the pick-up unit 100 of the flatness that it provides for present technique scheme implementation example.Said pick-up unit 100 comprises bogey 110, contactless height measuring device 120 and controller 130.

Bogey 110 comprises plummer 1101 and the driver 1102 that links to each other with plummer 1101.Plummer 1101 has loading end 1103, is used to carry the housing piece that contains object under test, goes into to have the lens barrel of eyeglass to be measured like group.Plummer 1101 can rotate around its central axis under the driving of driver 1102.Plummer 1101 also can comprise the scale mark of representing its anglec of rotation.Driver 1103 can be motor or other common driver.

Contactless height measuring device 120 utilizes the principle design of high-velocity scanning projection; It is located at plummer 1101 tops; Relative with loading end 1103; And link to each other with controller 130, be used to measure and the detection faces of continuous recording object under test on the height value of the relative reference point of a plurality of measurement points, and measured height value is transferred to controller 130.Contactless height measuring device 120 can be laser ceilometer or other common contactless altimeter.

Controller 130 comprises drive control module 1301, data processing module 1302 and man-machine interface 1303.Drive control module 1301 links to each other with data processing module 1302 with the driver 1102 of plummer 1101 respectively, is used for anglec of rotation Control Driver 1102 according to the plummer 1101 of data processing module 1302 transmission and drives plummers 1101 and rotate around its central axis.Data processing module 1302 links to each other with drive control module 1301, contactless height measuring device 120 and man-machine interface 1303 respectively; Be used to analyze and handle the height value of the relative reference point of a plurality of measurement points on the detection faces of object under test, and the anglec of rotation of recording carrying platform 1101 or rotational time.Man-machine interface 1303 links to each other with data processing module 1302 with drive control module 1301 respectively, is used for input instruction and shows the flatness of object under test with graph direct.

When the pick-up unit 100 of the flatness of use present embodiment detects the flatness of objects under test; Need earlier object under test to be placed on the loading end 1103 of plummer 1101; And make the detection faces of object under test relative, start driver 1102 then, plummer 1101 is rotated around its central axis with contactless height measuring device 120; Rotate thereby drive object under test, a plurality of measurement points of detection faces that re-use contactless height measuring device 120 record objects under test are with respect to the height value of reference point.

The pick-up unit 100 of the flatness of present embodiment is simple in structure; Owing to be used contactless height measuring device 120 and rotation plummer 1101; Overcome existing body surface flatness pick-up unit can only be from the side to the object under test of not inserting housing piece with the capture of imageing sensor facing surfaces; And can not be, thereby has wider application to the defective of the object under test capture that is contained in housing piece.

To be example with the eyeglass to be measured of organizing lens barrel below, and provide a kind of and use aforementioned pick-up unit 100 to detect the method for the flatness of objects under test.

Referring to Fig. 3, the detection method of the flatness that it provides for the present technique scheme is used to detect the schematic flow sheet of eyeglass 200 to be measured, and said detection method comprises the steps:

Step 1 is gone into to have the lens barrel 300 of eyeglass 200 to be measured to place the plummer 1101 of bogey 110 group, and is made the central axis of lens barrel 300 and the central axis of plummer 1101 be positioned at same straight line.

Please consult Fig. 3 and Fig. 4 in the lump, eyeglass 200 to be measured is contained in the lens barrel 300, and it has detection faces 201.Group goes into to have the lens barrel 300 of eyeglass 200 to be measured to be oppositely arranged with contactless height measuring device 120, so that the detection faces 201 of eyeglass to be measured 200 is relative with contactless height measuring device 120.

Step 2; Rotation plummer 1101; Plummer 1101 drive lens barrels 300 and eyeglass to be measured 200 are rotated around the central axis of plummer 1101; Choose reference point, the height value of the relative reference point of a plurality of measurement points on the circumference of the detection faces 201 of continuous recording eyeglass 200 to be measured and the anglec of rotation of plummer 1101.

Start-up control device 130 Control Driver 1102 make driver 1102 drive plummer 1101 and rotate around its central axis, and thus, plummer 1101 places drive the lens barrel 300 of its loading end 1103 and eyeglass 200 to be measured to rotate.

Because high equipment 120 stationkeeping of contactless survey; When plummer 1101 when its central axis rotates a week; The detection light beam that the high equipment 120 of contactless survey sends can be correspondingly rotates a circle around the central axis of plummer 1101, thereby measures the height value of the relative reference point of a plurality of measurement points on the circumference of detection faces 201 of eyeglass 200 to be measured.

Said reference point can be lens barrel 300 surface more arbitrarily, also can be in the loading end 1103 of plummer 1101 more arbitrarily.Be convenient explanation, the reference point in the present embodiment be in the loading end 1103 more arbitrarily, and the height of setting this reference point is zero.

The height value of the relative reference point of a plurality of measurement points on the circumference of the detection faces 201 of eyeglass 200 measures through contactless height measuring device 120 and the mode of controller 130 records realizes.The anglec of rotation of plummer 1101 can directly be transferred to drive control module 1301 by data processing module 1302, thereby drives the corresponding angle of plummer 1101 rotations.This anglec of rotation is stored in the data processing module 1302.Simultaneously, but the rotational time that data processing module 1302 recording carrying platforms 1101 rotate to an angle and consumed.

Step 3, a plurality of measurement points of 201 1 circumference of detection faces of analyzing measured eyeglass to be measured 200 are with respect to the height value of reference point, and the group that draws eyeglass 200 to be measured is gone into flatness.

A plurality of measurement points on the circumference of the detection faces 201 of eyeglass 200 to be measured can be X axle and Y axle with the anglec of rotation and the measured each point height value of plummer 1101 respectively through the data processing module 1302 of controller 130 with respect to the analysis of the height value of reference point; Make the figure of the height value of each measurement point to the anglec of rotation of plummer 1101; Or be X axle and Y axle with the rotational time of plummer 1101 and the height value of measured each measurement point respectively, make the figure of the height value of each measurement point to the rotational time of plummer 1101.Said figure shows through man-machine interface 1303, goes into flatness with the group of visual representation eyeglass 200.Height value through making each measurement point in the present embodiment is gone into flatness to the group that the figure of the anglec of rotation of plummer 1101 draws eyeglass 1101.See also Fig. 5 A, the height value of each measurement point is a curve to the figure of the anglec of rotation of plummer 1101, shows that then eyeglass 200 non-levels to be measured are inserted lens barrel 300 or eyeglass to be measured 200 in lens barrel 300 deformation has taken place, and lens set is gone into the poor flatness of lens barrel.Referring to Fig. 5 B, the height value of each measurement point is a straight line that is parallel to the X axle to the figure of the anglec of rotation of plummer 1101, then represent eyeglass 200 levels to be measured insert lens barrel 300 and not the distortion, lens set is gone into the good planeness of lens barrel.

What deserves to be mentioned is that the detection method of the flatness of present embodiment also can detect the height value of the relative reference point of measurement point on a plurality of circumference of detection faces of eyeglass to be measured.At this moment; Need are behind the height of the relative reference point of measurement point on the circumference of the detection faces of the detection light beam completion measurement eyeglass to be measured of contactless height measuring device; Adjust the radius of turn of the detection light beam of contactless height measuring device around the central axis of plummer; Make the height of the relative reference point of a plurality of measurement points on another circumference of its detection faces of measuring eyeglass to be measured by preceding method, thereby detect the flatness of eyeglass to be measured.

A plurality of measurement points on the circumference of the detection faces of the detection method employing continuous recording eyeglass to be measured of the flatness of present embodiment are with respect to the anglec of rotation of the height and the lens barrel of reference point; Need not respectively group to be gone into the eyeglass imaging to be measured of lens barrel front and back and contrasted two images to judge whether eyeglass deformation takes place and whether level places in the lens barrel, has improved accuracy of detection and efficient effectively.

It is understandable that, for the person of ordinary skill of the art, can make other various corresponding changes and distortion, and all these change the protection domain that all should belong to the application's claim with distortion according to the technical conceive of present technique scheme.

Claims (3)

1. the detection method of a flatness is characterized in that, this method may further comprise the steps:
A kind of pick-up unit of flatness is provided; Said pick-up unit comprises: bogey; It comprises plummer and the driver that links to each other with plummer, and said plummer is used to carry object under test, and said driver rotates around its central axis in order to drive said plummer; Controller; It links to each other with said bogey; In order to control the flatness that the said plummer of said driver drives rotated and analyzed said object under test; Said controller comprises the drive control module that links to each other with said driver, the data processing module that links to each other with said drive control module and the man-machine interface that links to each other with data processing module with said drive control module respectively; Said drive control module is used to control the anglec of rotation that the said plummer of said driver drives rotates, and said data processing module is used to write down the anglec of rotation of said plummer, and said man-machine interface is used for input instruction and the flatness that shows object under test directly perceived; And contactless height measuring device; It is located at said bogey top; Relative with said plummer, and link to each other with the data processing module of said controller, be used for the height value of the relative reference point of a plurality of measurement points on the detection faces of the said object under test of continuous recording; And measured height value is transferred to the data processing module of said controller, so that said data processing module is analyzed measured height value;
Object under test is placed the plummer of said bogey, and make the central axis of said object under test and the central axis of said plummer be positioned at same straight line;
Said controller is controlled said driver and is rotated to drive said plummer; Making said plummer drive said object under test rotates around the central axis of said plummer; Choose reference point; The height value of the relative reference point of a plurality of measurement points on the detection faces of the said object under test of said contactless height measuring device continuous coverage, and measured height value is transferred to said controller, said a plurality of measurement points are positioned at a circumference of the detection faces of object under test;
The data processing module of said controller is analyzed the height value of each measurement point; And write down the anglec of rotation of said plummer; The height value of said each measurement point of analysis comprises respectively two coordinate axis that the height value and the plummer anglec of rotation with each measurement point is coordinate system; The figure of the height value of making each measurement point and the corresponding plummer anglec of rotation, thus draw the flatness of said object under test.
2. the detection method of flatness according to claim 1 is characterized in that, said reference point be housing piece surface a bit or in the loading end of plummer a bit.
3. the detection method of a flatness is characterized in that, this method may further comprise the steps:
A kind of pick-up unit of flatness is provided; Said pick-up unit comprises: bogey; It comprises plummer and the driver that links to each other with plummer, and said plummer is used to carry object under test, and said driver rotates around its central axis in order to drive said plummer; Controller; It links to each other with said bogey; In order to control the flatness that the said plummer of said driver drives rotated and analyzed said object under test; Said controller comprises the drive control module that links to each other with said driver, the data processing module that links to each other with said drive control module and the man-machine interface that links to each other with data processing module with said drive control module respectively; Said drive control module is used to control the anglec of rotation that the said plummer of said driver drives rotates, and said data processing module is used to write down the anglec of rotation of said plummer, and said man-machine interface is used for input instruction and the flatness that shows object under test directly perceived; And contactless height measuring device; It is located at said bogey top; Relative with said plummer, and link to each other with the data processing module of said controller, be used for the height value of the relative reference point of a plurality of measurement points on the detection faces of the said object under test of continuous recording; And measured height value is transferred to the data processing module of said controller, so that said data processing module is analyzed measured height value;
Object under test is placed the plummer of said bogey, and make the central axis of said object under test and the central axis of said plummer be positioned at same straight line;
Said controller is controlled said driver and is rotated to drive said plummer; Making said plummer drive said object under test rotates around the central axis of said plummer; Choose reference point; The height value of the relative reference point of a plurality of measurement points on the detection faces of the said object under test of said contactless height measuring device continuous coverage, and measured height value is transferred to said controller, said a plurality of measurement points are positioned at a circumference of the detection faces of object under test;
The data processing module of said controller is analyzed the height value of each measurement point; And write down the anglec of rotation of said plummer; The height value of said each measurement point of analysis comprises respectively two coordinate axis that height value and the plummer rotational time with each measurement point is coordinate system; The figure of the height value of making each measurement point and corresponding plummer rotational time, thus draw the flatness of said object under test.
CN2007102023084A 2007-10-30 2007-10-30 Flatness detection device and detection method CN101424519B (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
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CN107270862A (en) * 2017-07-14 2017-10-20 杭州星帅尔电器股份有限公司 The detection method of heating wire flatness in Miniature heat protector

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CN103940380A (en) * 2014-04-08 2014-07-23 广东正业科技股份有限公司 Planeness test method and device
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CN109029306A (en) * 2018-09-30 2018-12-18 杭州中芯晶圆半导体股份有限公司 It is a kind of grinding, polishing machine price fixing flatness test method
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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5376890A (en) * 1993-06-10 1994-12-27 Memc Electronic Materials, Inc. Capacitive distance measuring apparatus having liquid ground contact

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5376890A (en) * 1993-06-10 1994-12-27 Memc Electronic Materials, Inc. Capacitive distance measuring apparatus having liquid ground contact

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
JP特开平7-211652A 1995.08.11

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107270862A (en) * 2017-07-14 2017-10-20 杭州星帅尔电器股份有限公司 The detection method of heating wire flatness in Miniature heat protector
CN107270862B (en) * 2017-07-14 2019-04-30 杭州星帅尔电器股份有限公司 The detection method of heating wire flatness in Miniature heat protector

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