CN103308286A - Method for detecting parameters of lenticular grating for three-dimensional printing - Google Patents
Method for detecting parameters of lenticular grating for three-dimensional printing Download PDFInfo
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- CN103308286A CN103308286A CN2013102569262A CN201310256926A CN103308286A CN 103308286 A CN103308286 A CN 103308286A CN 2013102569262 A CN2013102569262 A CN 2013102569262A CN 201310256926 A CN201310256926 A CN 201310256926A CN 103308286 A CN103308286 A CN 103308286A
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Abstract
The invention discloses a method for detecting parameters of a lenticular grating for three-dimensional printing. The method comprises the steps of fixedly placing the lenticular grating to be detected on a workbench; adjusting the position of an electronic digital micrometer on an electronic digital micrometer mounting base; moving the electronic digital micrometer along a first direction and acquiring data of the electronic digital micrometer mounting base in the first/second direction by using a data acquisition module, wherein the first direction is perpendicular to the second direction; saving the measured data of the electronic digital micrometer mounting base in the first direction and data of the electronic digital micrometer in the second direction; and analyzing test data, fitting the curved surface of the lenticular grating to be detected and calculating the parameters of the lenticular grating to be detected. By means of the method, the parameters of the lenticular grating to be detected can be detected in real time through a computer, printing of test strips or production of test images are not needed, and errors caused by artificial observation are avoided. The method has the advantages of high efficiency, high stability and high reliability.
Description
Technical field
The invention belongs to the optical detective technology field, relate to a kind of column mirror grating parameter detection method, relate in particular to a kind of stereosopic printing column mirror grating parameter detection method.
Background technology
In Traditional Printing Industry, common planographic product glide gradually in the status in Information Communication field.And make the lifelike stereosopic printing that becomes of static two dimensional image, and just impacting people's visual experience, become a new growth engines of printing industry.Stereosopic printing is to have merged original screen panel refraction minute picture technology and a printing technology, will be through the multiple image printing of specific coding processing at grade, and utilize grating to make plane picture present the make a variation mode of printing of effect of three-dimensional stereoscopic visual effect or animation.At present, the used grating in stereosopic printing market is mainly cylindrical lens raster, is called for short column mirror grating, be use at most, also be the most ripe grating material.
The column mirror grating board parameter comprises that grid stroke counts LPI(pitch p=25.4/LPI, unit: mm), thickness d, radius of curvature R, refractive index n and transmissivity S.Selected sheet material, refractive index n and transmissivity S are just fixing.Column mirror grating producer can provide a column mirror grating line theory of number value, and because the existence of batch production error, this value is accurate not.Wright's major concern of stereosopic printing be accurately line number or the pitch of used column mirror grating.Because when the stereo-picture that the 3 D stereo software development stereosopic printing of using specialty is used, left and right sides visual pattern to be carried out longitudinal strip according to the column mirror grating board parameter cut apart numbering, again when taking image institute to put in the housing bar that order will number equally arranged sequentially, form the new image that comprises steric information of a width of cloth.
The accuracy of column mirror grating line number is the committed step of stereosopic printing success or failure.Column mirror grating is proofreaded in the correct situation, and the stereoscopic picture plane of printing can be very clear, do not rock a little, do not feel dizzy, and seems very comfortable.Otherwise then fuzzy pictures dangles, and feels dizzy, and is uncomfortable, if become picture, what then become is not thorough, and ghost is arranged.So before stereosopic printing, the line that how accurately detects used column mirror grating is counted tool and is had very important significance.
It is as follows that the column mirror grating line of commonly using is at present counted test process:
The Molded Line number of the 3 D grating that (1) provides according to column mirror grating producer, testing software prints approximate range with grating, then covers column mirror grating, relatively approaches complete black complete white with observing which test-strips;
(2) on the basis of this test-strips that approaches, the more high-precision gratings strips of regeneration covers the column mirror grating test, until complete black complete white, corresponding gratings strips is exactly the grid stroke number that will look for.
He Saijun is in Master's thesis in 2009 " based on the multi-view auto stereo display technique research of column mirror grating " and the patent CN200810062514.4 " based on the general grating measurement method of parameters of pole mirror grating LCD freedom stereoscopic display device " that obtained the authorization on January 13rd, 2010, adopt by observe complete black complete white RGB image based on the LCD free stereo display equipment of column mirror grating, measure line number and the pitch angle of column mirror grating.Can the method have made traditional printing test bar to show complete black complete white RGB image at LCD into, still obtain complete black or complete white effect by manual observation.
Can find out the defective of conventional stereo grating check and correction technology from said method: (1) test is cumbersome, needs to print a lot of test-strips or make a lot of test patterns; (2) judge whether complete black by the artificial vision or complete white, the human factor impact is larger; (3) accuracy of detection can't guarantee.
In view of this, nowadays in the urgent need to designing a kind of new column mirror grating parameter detection method, in order to overcome now methodical defects.
Summary of the invention
Technical matters to be solved by this invention is: a kind of stereosopic printing column mirror grating parameter detection method is provided, and can be accurately, quick, automatically stereosopic printing counts LPI with the column mirror grating line.
For solving the problems of the technologies described above, the present invention adopts following technical scheme:
A kind of stereosopic printing column mirror grating parameter detection method, described detection method comprises the steps:
Step S1, with tested column mirror grating fixed placement on work top, tested column mirror grating has grating facing up;
Step S2, the position of adjusting Electronic Digital Micrometer on the Electronic Digital Micrometer mount pad are pressed near the low spot of initial grating contact, and continue to press down setpoint distance, locking Electronic Digital Micrometer position, and zeroing;
Step S3, Electronic Digital Micrometer mount pad move along first direction, simultaneously the data of second direction on the position data of the first direction of Electronic Digital Micrometer mount pad and the Electronic Digital Micrometer are gathered by data acquisition module; Described first direction and work top place plane parallel;
The data of second direction on the position data of the first direction of the Electronic Digital Micrometer mount pad that step S4, preservation are measured and the Electronic Digital Micrometer;
Step S5, test data is analyzed, simulated tested column mirror grating curved surface, calculate the parameter of tested column mirror grating plate.
As a preferred embodiment of the present invention, among the described step S3, described Electronic Digital Micrometer mount pad is realized by the motor-driven accurate lead screw nut body with speed reduction unit along the movement of first direction, guarantees its direction of motion by pair of guide rails, records its position data by the high precision position grating;
The Electronic Digital Micrometer contact is passive movement in the motion of second direction, the contact of Electronic Digital Micrometer keeps in touch with tested column mirror grating curved surface when mobile on tested column mirror grating surface always, so the curved surface that the contact of Electronic Digital Micrometer has reacted tested column mirror grating surface in the change in location of second direction changes;
Computing machine gathers the data of second direction on the data of Electronic Digital Micrometer mount pad first direction high precision position grating and the Electronic Digital Micrometer simultaneously by data acquisition module; On computer screen, show in real time the contour curve of tested column mirror grating, and mark the transverse and longitudinal coordinate.
As a preferred embodiment of the present invention, the contact of described Electronic Digital Micrometer is that radius is 5 microns special bead.
As a preferred embodiment of the present invention, among the described step S5, according to the first direction that collects and second direction data, calculate the step that tested column mirror grating line is counted LPI, pitch p, thickness d and grating subsequent corrosion R:
In step S51, the measurement data, the first direction data are (x
1, x
2..., x
p) and the second direction data be (z
1, z
2..., z
p);
Step S52, utilize above-mentioned data to show in real time on computers grating circular arc camber shape, and data are screened and analyzed;
Step S53, will measure the not data deletion of complete grating arc surface of curve beginning and end;
Step S54, the first direction data that mark off article one grating are (x
11, x
12, x
13..., x
1 (m-1), x
1m), its corresponding second direction data are (z
11, z
12, z
13..., z
1 (m-1), z
1m); The first direction data of second grating are (x
21, x
22, x
23..., x
2 (s-1), x
2s), its corresponding second direction data are (z
21, z
22, z
23..., z
2 (s-1), z
2s); In like manner, the first direction data of n bar grating are (x
N1, x
N2, x
N3..., x
N (q-1), x
Nq), its corresponding second direction data are (z
N1, z
N2, z
N3..., z
N (q-1), z
Nq);
Step S55, to find out article one grating be (x to the coordinate of the minimum point of n bar grating
1L, z
1L), (x
2L, z
2L) ..., (x
NL, z
NL), the coordinate of peak is (x
1H, z
1H), (x
2H, z
2H) ..., (x
NH, z
NH), go out the grating radius R with least square fitting
1, R
2..., R
n
Step S56, the average pitch that calculates tested grating are
Then the average line number of this original screen panel is LPI=25.4/p, the thickness of grating
And radius-of-curvature
As a preferred embodiment of the present invention, among the step S1, an end of tested column mirror grating aligns with the reference field of work top and is close to; Among the step S2, the Electronic Digital Micrometer contact is pressed near the low spot of tested grating article one, and continues to press down about 0.5mm, locking Electronic Digital Micrometer position, and zeroing.
As a preferred embodiment of the present invention, among the step S4, when preserving measurement data, on computer interface, draw in real time change curve.
The stereosopic printing column mirror grating parameter detection method that the present invention proposes, its beneficial effect is:
1) the inventive method can detect tested column mirror grating parameter in real time by computing machine, does not need the printing test bar or makes test pattern, and the error of having avoided artificial observation to bring has advantages of high-level efficiency, high stability and high reliability;
2) the present invention can pass through Real time vision out with tested column mirror grating shape of cross section, and is directly perceived concerning the tester, vivid;
3) because the horizontal and vertical position probing grating of the inventive method precision is high, can satisfy the accuracy requirement of doing stereosopic printing;
4) apparatus structure that uses of column mirror grating parameter detection method of the present invention is simple, and the data value of detection is accurately reliable, has good market outlook.
Description of drawings
Fig. 1-1 is the tested column mirror grating profile of the present invention schematic diagram.
Fig. 1-2 is single tested column mirror grating Parameter Map.
Fig. 2 is that the column mirror grating line that stereosopic printing of the present invention is used is counted the detection method schematic diagram.
Fig. 3 is that the column mirror grating line that stereosopic printing of the present invention is used is counted the pick-up unit schematic layout pattern.。
Fig. 4 is the test data schematic diagram.
Label title in the accompanying drawing:
Tested column mirror grating 1; Electronic Digital Micrometer 2; Electronic Digital Micrometer contact 21; Electronic Digital Micrometer mount pad 3; Driving mechanism 4; Work top 5; Vertical reference face 51; Level reference 52; High precision position grating 6;
Pitch p; Thickness d; Radius of curvature R;
Article one, the highest, the minimum point coordinate of grating are (x
1H, z
1H), (x
1L, z
1L);
The highest, the minimum point coordinate of second grating are (x
2H, z
2H), (x
2L, z
2L);
The highest, the minimum point coordinate of n bar grating are (x
NH, z
NH), (x
NL, z
NL).
Embodiment
Describe the preferred embodiments of the present invention in detail below in conjunction with accompanying drawing.
Embodiment one
See also Fig. 2, Fig. 3, the present invention has disclosed a kind of stereosopic printing and has counted detection method with the column mirror grating line, specifically may further comprise the steps:
[step S1] is positioned over tested column mirror grating 1 on the marble work top 5, the left end of column mirror grating 1 aligns with the vertical reference face 51 of marble countertop 5 and is close to, tested column mirror grating 1 has grating facing up, and the plane is placed on the level reference 52 of marble work top 5.
[step S2] starts test macro, all the sensors initialization; Shown in Fig. 1-1, Fig. 1-2, set up coordinate system, X-axis, Y-axis are arranged on the marble work top (or tested column mirror grating plane), and be perhaps parallel with marble work top (or tested column mirror grating plane).Motor-driven Electronic Digital Micrometer mount pad 3 moves near rightmost article one grating low spot along directions X, and continues to press down 0.3～0.8mm(such as 0.5mm), locking Electronic Digital Micrometer position and zeroing.
[step S3] begins to measure, Electronic Digital Micrometer mount pad 3 moves along the X negative direction, computing machine gathers the data of high precision position grating 4 and Electronic Digital Micrometer USB or serial ports simultaneously by high-speed data acquisition card, what high precision position grating 4 recorded is the position of the directions X of Electronic Digital Micrometer mount pad 3, what Electronic Digital Micrometer USB or serial ports recorded is the displacement that Electronic Digital Micrometer contact 21 produces in the Z direction, simultaneously on computer screen, can show in real time the contour curve of grating, and mark the transverse and longitudinal coordinate.
Particularly, in the present embodiment, the movement of described Electronic Digital Micrometer mount pad 3 along continuous straight runs (i.e. the direction parallel with work top) is realized by driving mechanism 4, driving mechanism 4 is to be realized by the motor-driven accurate lead screw nut body with speed reduction unit, guaranteed the direction of motion of Electronic Digital Micrometer mount pad 3 by pair of guide rails, by high precision position grating 6 its position datas of record.Electronic Digital Micrometer contact 21 motion in the vertical direction is passive movement, Electronic Digital Micrometer contact 21 keeps in touch with tested column mirror grating curved surface when mobile on tested column mirror grating surface always, changes so the change in location in the vertical direction of Electronic Digital Micrometer contact 21 has been reacted the curved surface on tested column mirror grating 1 surface.Computing machine gathers the data of high precision position grating 6 and Electronic Digital Micrometer contact 21 simultaneously by data acquisition module; On computer screen, show in real time the contour curve of tested column mirror grating, and mark the transverse and longitudinal coordinate.
[step S4] is saved in the data of the directions X of measuring among the step S3 and Z direction in the database, can inquire about in historical data later on, and can show at computer interface the historical data curve of grating;
[step S5] analyzes test data, and calculate grid stroke and count LPI, pitch p, thickness d and grating subsequent corrosion R, the LPI dimensionless, its counit is mm.
Step S5 specifically comprises the steps:
The directions X data of step S51, measurement are (x
1, x
2..., x
p) and the Z directional data be (z
1, z
2..., z
p);
Step S52, utilize above-mentioned data to show in real time on computers grating circular arc camber shape, and data are screened and analyzed;
Step S53, will measure the not data deletion of complete grating arc surface of curve beginning and end;
Step S54, the directions X data that mark off article one grating are (x
11, x
12, x
13..., x
1 (m-1), x
1m), its corresponding Z directional data is (z
11, z
12, z
13..., z
1 (m-1), z
1m); The directions X data of second grating are (x
21, x
22, x
23..., x
2 (s-1), x
2s), its corresponding Z directional data is (z
21, z
22, z
23..., z
2 (s-1), z
2s); In like manner, the directions X data of n bar grating are (x
N1, x
N2, x
N3..., x
N (q-1), x
Nq), its corresponding Z directional data is (z
N1, z
N2, z
N3..., z
N (q-1), z
Nq);
Step S55, see also Fig. 4, finding out article one grating is (x to the coordinate of the minimum point of n bar grating
1L, z
1L), (x
2L, z
2L) ..., (x
NL, z
NL), the coordinate of peak is (x
1H, z
1H), (x
2H, z
2H) ..., (x
NH, z
NH), go out the grating radius R with least square fitting
1, R
2..., R
n
Step S56, the average pitch that calculates tested grating are
Then the average line number of this original screen panel is LPI=25.4/p, the thickness of grating
And radius-of-curvature
In sum, the stereosopic printing column mirror grating parameter detection method that the present invention proposes, can detect in real time tested column mirror grating parameter by computing machine, do not need the printing test bar or make test pattern, the error of having avoided artificial observation to bring has advantages of high-level efficiency, high stability and high reliability.Simultaneously, the present invention can pass through Real time vision out with tested column mirror grating shape of cross section, and is directly perceived concerning the tester, vivid.Because the horizontal and vertical position data precision of the inventive method is high, can satisfy the accuracy requirement of doing stereosopic printing.In addition, the apparatus structure that column mirror grating parameter detection method of the present invention uses is simple, and the data value of detection is accurately reliable, has good market outlook.
Here description of the invention and application is illustrative, is not to want with scope restriction of the present invention in the above-described embodiments.Here the distortion of disclosed embodiment and change is possible, and the various parts of the replacement of embodiment and equivalence are known for those those of ordinary skill in the art.Those skilled in the art are noted that in the situation that do not break away from spirit of the present invention or essential characteristic, and the present invention can be with other form, structure, layout, ratio, and realize with other assembly, material and parts.In the situation that do not break away from the scope of the invention and spirit, can carry out other distortion and change to disclosed embodiment here.
Claims (7)
1. a stereosopic printing column mirror grating parameter detection method is characterized in that, described detection method comprises the steps:
Step S1, with tested column mirror grating fixed placement on work top, tested column mirror grating has grating facing up;
Step S2, the position of adjusting Electronic Digital Micrometer on mount pad are pressed near the low spot of tested grating article one contact, and continue to press down setpoint distance, locking Electronic Digital Micrometer position, and zeroing;
Step S3, Electronic Digital Micrometer mount pad move along first direction, simultaneously the data of second direction on the position data of the first direction of Electronic Digital Micrometer mount pad and the Electronic Digital Micrometer are gathered by data acquisition module; Described first direction and work top place plane parallel, second direction is vertical with plane, work top place;
The data of second direction on the position data of the first direction of the Electronic Digital Micrometer mount pad that step S4, preservation are measured and the Electronic Digital Micrometer;
Step S5, test data is analyzed, simulated tested column mirror grating curved surface, calculate the parameter of tested column mirror grating plate.
2. stereosopic printing according to claim 1 column mirror grating parameter detection method is characterized in that:
Among the described step S3, described Electronic Digital Micrometer mount pad is realized by the motor-driven accurate lead screw nut body with speed reduction unit along the movement of first direction, guarantees its direction of motion by pair of guide rails, records its position data by the high precision position grating;
The contact of Electronic Digital Micrometer is passive movement in the motion of second direction, the contact of Electronic Digital Micrometer keeps in touch with tested column mirror grating curved surface when mobile on tested column mirror grating surface always, so the curved surface that the data variation of second direction has been reacted tested column mirror grating surface on the Electronic Digital Micrometer changes, this data communication device is crossed USB mouth or serial ports by data collecting module collected;
Computing machine gathers the data of second direction on the data of Electronic Digital Micrometer mount pad first direction high precision position grating and the Electronic Digital Micrometer simultaneously by data acquisition module; On computer screen, show in real time the contour curve of tested column mirror grating, and mark the transverse and longitudinal coordinate.
3. stereosopic printing according to claim 2 column mirror grating parameter detection method is characterized in that:
The contact of described Electronic Digital Micrometer be customization, radius is 5 microns bead.
4. according to claim 1 to one of 3 described stereosopic printing column mirror grating parameter detection methods, it is characterized in that:
Among the described step S5, the data according to the Electronic Digital Micrometer mount pad that collects second direction on the data of first direction and Electronic Digital Micrometer calculate the step that tested column mirror grating line is counted LPI, pitch p, thickness d and grating subsequent corrosion R:
In step S51, the measurement data, the first direction data are (x
1, x
2..., x
p) and the second direction data be (z
1, z
2..., z
p);
Step S52, utilize above-mentioned data to show in real time on computers grating circular arc camber shape, and data are screened and analyzed;
Step S53, will measure the not data deletion of complete grating arc surface of curve beginning and end;
Step S54, the first direction data that mark off article one grating are (x
11, x
12, x
13..., x
1 (m-1), x
1m), its corresponding second direction data are (z
11, z
12, z
13..., z
1 (m-1), z
1m); The first direction data of second grating are (x
21, x
22, x
23..., x
2 (s-1), x
2s), its corresponding second direction data are (z
21, z
22, z
23..., z
2 (s-1), z
2s); In like manner, the first direction data of n bar grating are (x
N1, x
N2, x
N3..., x
N (q-1), x
Nq), its corresponding second direction data are (z
N1, z
N2, z
N3..., z
N (q-1), z
Nq);
Step S55, to find out article one grating be (x to the coordinate of the minimum point of n bar grating
1L, z
1L), (x
2L, z
2L) ..., (x
NL, z
NL), the coordinate of peak is (x
1H, z
1H), (x
2H, z
2H) ..., (x
NH, z
NH), go out the grating radius R with least square fitting
1, R
2..., R
n
Step S56, the average pitch that calculates tested grating are
Then the average line number of this original screen panel is LPI=25.4/p, the thickness of grating
And radius-of-curvature
5. stereosopic printing according to claim 1 column mirror grating parameter detection method is characterized in that:
Among the step S1, an end of tested column mirror grating aligns with the reference field of work top and is close to.
6. stereosopic printing according to claim 1 column mirror grating parameter detection method is characterized in that:
Among the step S2, regulate the position of Electronic Digital Micrometer on mount pad, contact is pressed near the low spot of tested grating article one, and continues to press down 0.3～0.8mm, locking Electronic Digital Micrometer position and zeroing.
7. stereosopic printing according to claim 1 column mirror grating parameter detection method is characterized in that:
Among the step S4, when preserving measurement data, on computer interface, draw in real time change curve.
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| CN201310256926.2A CN103308286B (en) | 2013-06-25 | 2013-06-25 | Method for detecting parameters of lenticular grating for three-dimensional printing |
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|---|---|---|---|
| CN201310256926.2A CN103308286B (en) | 2013-06-25 | 2013-06-25 | Method for detecting parameters of lenticular grating for three-dimensional printing |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104273678A (en) * | 2014-09-25 | 2015-01-14 | 中山市沙溪镇新顺怡印花绣花厂 | Clothes with three-dimensional printing patterns capable of being seen with naked eyes |
| CN107655660A (en) * | 2017-10-31 | 2018-02-02 | 江苏中升立体显示科技有限公司 | The column mirror grating measurement method of parameters of bore hole 3D display equipment |
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2013
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| WO2000004360A1 (en) * | 1998-07-15 | 2000-01-27 | Eastman Chemical Company | Method for determining quality of lenticular sheet |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104273678A (en) * | 2014-09-25 | 2015-01-14 | 中山市沙溪镇新顺怡印花绣花厂 | Clothes with three-dimensional printing patterns capable of being seen with naked eyes |
| CN104273678B (en) * | 2014-09-25 | 2016-06-01 | 中山市沙溪镇新顺怡印花绣花厂 | Naked can look the clothes of stereoscopic printing image |
| CN107655660A (en) * | 2017-10-31 | 2018-02-02 | 江苏中升立体显示科技有限公司 | The column mirror grating measurement method of parameters of bore hole 3D display equipment |
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| CN103308286B (en) | 2015-03-18 |
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