CN2364507Y - Small non-contact symmetric imput type three-D profile scanning head - Google Patents
Small non-contact symmetric imput type three-D profile scanning head Download PDFInfo
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- CN2364507Y CN2364507Y CN 99201534 CN99201534U CN2364507Y CN 2364507 Y CN2364507 Y CN 2364507Y CN 99201534 CN99201534 CN 99201534 CN 99201534 U CN99201534 U CN 99201534U CN 2364507 Y CN2364507 Y CN 2364507Y
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- light source
- reflective mirror
- scanner head
- coordinate
- electronic inductor
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Abstract
The utility model relates to a non-contact three-d profile scanning head which comprises a light source, an electronic inductor and a reflective mirror. The light source adopts a set of collimation and cylindrical lenses which can convert a point light source to a linear light source, and the electronic inductor and the reflective mirror are symmetrically arranged in mirror along an axial cord of an optical axis of the light source. The monochrome laser spot light source penetrates through the collimation and cylindrical lens and converts to a lineation light beam which is vertically projected on a body surface, and light is reflected. The light is accepted on the inductor through the reflective mirror and the electronic inductor, and a surface coordinate points with the three-d profile can be obtained after the computer operation. The light is accepted, because of multiple reflections, the desired substantial space of an optical path is greatly reduced, and the image quality is maintained.
Description
The utility model relates to a kind of surveying instrument, particularly relates to a kind of scanner head of non-contact mode measuring object surface shape.
Accurately the instrument of Measuring Object surface profile is very to need always, the development of especially sensitization technology and robot calculator, also in this field, obtained application, for example print scene, portrait or human head picture that video camera takes the photograph or the like immediately with what video camera and computer connected to form, but this image capture method has suitable sum of errors distortion, can not obtain the three-dimensional data of subject, therefore be not suitable for the application in the research and production, and error is little and the scanner of the non-contact 3-D profile that distortion is little is the ten minutes needs.
The purpose of this utility model is to provide a kind of measuring error little and the little and simple three-dimensional profile scanner head of small volume structure of distortion.
The purpose of this utility model is to realize like this, a kind of scanner head, being used for that body surface is carried out the non-contact 3-D profile measures, include light source, electronic inductor, reflective mirror, light source have adopted pointolite have been converted into one group of line source collimation and cylindrical lens, and electronic inductor and reflective mirror are symmetrical arranged along the optical axis axis mirror image of light source.The utility model adopts the one-wavelength laser pointolite as light source, has especially adopted the device of symmetrically arranged light path and information acquisition, constitutes scanner head.This structure makes measuring error and distortion reduce, and volume is little and simple in structure, has so just realized the purpose of this utility model.
The advantage of the utility model device is, this scanning head structure is simple, small volume and less weight, the length width fineness degree of scanning ray can utilize the cylindrical lens that cooperates with pointolite to regulate, owing to utilized the repeatedly reflection of light, the quality that a large amount of reductions of the required substantial spatial of light path is kept image, cooperate the layout that tilts to reach from the axle electronic inductor, shortcoming to the depth of field and abnormal degree is improved greatly, therefore, it has the occasion that extensively is utilized, and can cooperate multiple instrument and support to use the surface coordinate data of the three-dimensional profile of contactless ground Measuring Object.
Below in conjunction with accompanying drawing, describe embodiment of the present utility model in detail, wherein:
Fig. 1 is that each parts of this scanner head are set at the key diagram that is provided with on the thin flat plate;
Fig. 2 is each the space of components position description figure after the base plate among Fig. 1 is removed;
Fig. 3 is the plan view when end face is observed downwards;
Fig. 4 is that this scanner head is positioned on the embodiment key diagram that uses on the frame.
Consult Fig. 1, Fig. 1 illustrates the main composition of scanner head of the present utility model and situation is set with three-dimensional mode.Shown in the figure, each parts all be placed in a thin flat plate 8 above, thin flat plate 8 can be regarded the major part of scanner head framework as, represent whole framework, among the figure as can be seen, this scanner head mainly includes a light source 3, two along the inclination of light source axis and from axle setover symmetrically arranged electronic inductor 1 and 2, two same relatively optical axis axis symmetry of two groups of each groups is put and the identical reflective mirror 4 of corresponding structure, 5, with 6,7, wherein, reflective mirror 4 and 7 is symmetrical arranged, construct identical, reflective mirror 5 and 6 is symmetrical arranged, construct identical, reflective mirror 4 to 7 all is a plane mirror, and light source 3 adopts the one-wavelength laser pointolite, for example uses the red laser pointolite, utilize one group of collimation and cylindrical lens, luminous point is converted to linear beam, and the structure of this group collimation and cylindrical lens is made up of five collimation lenses and a cylindrical lens, and the light beam perpendicular projection is at body surface, for example project the normal beam that P is ordered on the object 9, for convenience of description, setting up coordinate system among the figure, is X, Y, the Z rectangular coordinate system, shown in the figure, with the optical axis of the light source 3 center Z axle as coordinate system, point is initial point on the orthogonal crossing Z axle in outside of this Z axle and following thin flat plate 8, and the straight line of plane parallel that passes through and the thin flat plate 8 vertical with the Z axle of initial point is an X-axis, cross the perpendicular axle in initial point and XZ plane and be Y-axis, the X axis right side is a positive dirction, and it is positive dirction that the Z axle points to light source, and Y-axis is upwards being positive dirction away from thin flat plate (8), following Fig. 2 and Fig. 3 adopt the coordinate system of determining here.
Shown in the figure, thin flat plate 8 with plane that XZ parallels in, after vertically being mapped to the testee surface, the light that is sent by light source 3 is reflected and scattering, be that the non-contact 3-D profile is measured, the part light that wherein has testee surface configuration coordinate dimension information is provided with reflective mirror 4 and 7 along angle 11 and angle 12 directives that angle equates along the Z rotational symmetry, respectively again by the angle 13 and 14 directive reflective mirrors 5 and 6 that equate along angle, light through reflective mirror 5 and 6 reflections is mapped to electronic inductor 1 and 2, receive by electronic inductor, deliver to the computer that connects by data line then and carry out data processing, show, store and print or the like.
Because being reflective mirror, optical system is symmetrical arranged along the optical axis axis mirror image of light source 3, and electronic inductor being symmetrical arranged too, make to the measuring error of same point, calculate in theory, can be reduced by at least half, this is the principal feature of this scanner head.
The angle Selection at angle 11 and angle 12 and definite can be so that this scanner head can receive reflection and scattered beam in a big way.Owing to adopt two set of contact lenses symmetries closely to be provided with, make the reduction of light path requisite space, this also is characteristics of this structure.
Reflective mirror can be used level crossing, and electronic inductor can adopt the corresponding component in the various video cameras, for example adopts the CCD electronic inductor, or directly adopts the camera of video camera.
All these parts can be small-sized, therefore whole device can make a size be long 17 centimetres wide 12 centimetres high 6 centimetres with in the interior framework, in framework is that the outside of scanner head framework adds the simple fixing parts of using, for example the thin flat plate bottom surface is provided with threaded hole, for example be equipped with the plain mode of screw etc. and so on outside thin plate 8 bottom surfaces, can install everywhere easily.Reflective mirror adopts level crossing, and is cheap.Utilize one group of collimation and cylindrical lens, light source 3 is transformed into linear beam, see tested position easily, select the power of light source, make its light in the scope all safe the human eye human body.
Consult Fig. 2, still adopt the numbering of the coordinate system set up among Fig. 1 and each parts among Fig. 2, the position is described to mark the coordinate mode, the coordinate of coordinate origin is that (0,0,0) order is the x coordinate, the y coordinate, the z coordinate, the center point coordinate of electronic inductor 1 is (49.5,0,85), the center point coordinate of electronic inductor 2 is (49.5,0,85), the centre coordinate of reflective mirror 4 is (69,0,15), the center point coordinate of reflective mirror 5 is (15,0,15), the center point coordinate of reflective mirror 6 is (15,0,15), its unit can be 1 millimeter, or amplify in proportion, light source 3 on the Z axle, the Z axle+position of value, it can be adjusted, concrete condition according to measured object can be adjusted, and also can fix, and for example its center point coordinate is (0,0,50).
Mark the very convenient explanation of coordinate relative value and be symmetrical arranged this feature, the Y coordinate of the central point of all devices all is 0, the central point that all devices are described is all in by the determined plane of X-axis Z axle, the X coordinate values same-sign of two electronic inductors 1 and 2 central point is opposite, explanation is with the Z rotational symmetry, reflective mirror 4 and 7, reflective mirror 5 and 6 x coordinate values also are that the numerical value equal symbol is opposite, so also all with the Z rotational symmetry, each reflective mirror and electronic inductor all can be regarded planar device as, as long as determine their set angles in the XZ plane, the phase position of each device of this scanner head just can be determined fully.Therefore, the planimetric map with Fig. 3 describes convenient and clear.
Consult Fig. 3, Fig. 3 is the front key diagram that each device of scanner head is laid, because the central point of each device is in same plane, and each device all is planar device, determines that therefore the angle setting of each device can be determined its position.
On the Z axle, get the P point, its coordinate (X, Z) be (0,-125), two electronic inductors 1 and 2 central point are A and B, reflective mirror 4 and 7 central point are M and N, reflective mirror 5 and 6 central point are C and D, initial point is O, pointolite 3 is Q, ∠ OPM is ∠ 11, OPN is ∠ 12, ∠ 11=∠ 12, and getting ∠ PMC is ∠ 13, ∠ PND is ∠ 14, ∠ 13=∠ 14 then, the plane of reflective mirror 4 is the vertical planes of the angular bisector with ∠ 13 of order through M, equally, the plane of reflective mirror 7 was perpendicular planes of the angular bisector with ∠ 14 that N is ordered, the plane of reflective mirror 5 was planes that the C point parallels with reflective mirror 4, and the plane of reflective mirror 6 was planes that parallel with reflective mirror 7 that D is ordered, for electronic inductor 1, connect CA, cross the A point and do the vertical line of CA, then this vertical line is rotated along clockwise direction the angle of ∠ 15, A plane at this moment, it is exactly the plane of electronic inductor 1, equally, connect DB, cross the vertical line that the B point is DB, and this vertical line rotated ∠ 16 in the counterclockwise direction, getting ∠ 15=∠ 16 plane at this moment is exactly the plane of electronic inductor 2.
Because A and B point symmetry, ∠ 15=∠ 16 is so electronic inductor 1 and 2 is along Z axle mirror image symmetry, because M and N point symmetry, ∠ 13=∠ 14, thus reflective mirror 4 and 7 along Z axle mirror image symmetry, reflective mirror 5 is parallel with reflective mirror 4, reflective mirror 6 is parallel with reflective mirror 7, C point and D point symmetry are so reflective mirror 5 and 6 is along Z axle mirror image symmetry, like this, whole scanner head is the structure with respect to Z axle mirror-symmetrical, and this structure has guaranteed that the error of this scanner head when scanning is little.
The data of the scanner head inner part position of a reality are as most preferred embodiment, get ∠ 11=∠ 26 degree, ∠ 13=64 degree, ∠ 15=20 degree, the position of pointolite 3 is on the Z axle, can get the Z value between 50 to 100, pointolite is converted into thin linear beam through one group of collimation and cylindrical lens, for example be about 2 centimeters linear beam, carry out scan operation, tilt to reach the data that obtain measured object surface same point from the electronic inductor 1 and 2 of axle setting simultaneously, handle obtaining the result by computer, after the relative position of these seven parts of having determined scanner head, the structure of scanner head just has been determined.Scanning ray for example is converted into the scanning ray of 20 millimeters long from light source through one group of said lens and sweeps at object surface, reflected light is penetrated respectively and is entered electronic inductor 1 through reflective mirror 4 and 5, with enter electronic inductor 2 through reflective mirror 7 and 6, afterwards, it is processed to enter computer, obtains measured object surface configuration data.
Fig. 4 is an examples of applications of this scanner head, it is installed in the outer end of the suspention of a support, scanner head can move up and down along the guide rail of support and carry out the position adjustment, measured object 9 is placed on the mobile platform below the scanner head, behind the scanning constant head, the mobile platform band measured object 9 and is moved, scanner head scans object 9 surfaces, scanning result by instant playback on the computer that is connected with scanner head and cooperates, the distance of scanner head and measured object 9 can be adjusted at a distance roughly earlier, for example is 15 centimetres, or 25 centimetres, or the like, can decide according to the convex-concave degree on measured object surface.To the size of measured object and shape without limits, can all can be tested to the object that laser reflects, but have laser scanning less than surperficial position then inapplicable.
Measured object for example is a camera housing, the surface configuration of a leaf, or the like, all can.
Claims (8)
1. scanner head, being used for that body surface is carried out the non-contact 3-D profile measures, include light source, electronic inductor, reflective mirror, it is characterized in that light source (3) has adopted pointolite is converted into one group of line source collimation and cylindrical lens, electronic inductor and reflective mirror are symmetrical arranged along the optical axis axis mirror image of light source (3).
2. scanner head as claimed in claim 1 is characterized in that, described electronic inductor adopts two, is symmetry, tilts and be provided with from the axle biasing.
3. scanner head as claimed in claim 1 is characterized in that, described reflective mirror has adopted four, all is plane mirror.
4. scanner head as claimed in claim 1 is characterized in that, per two of described reflective mirror is one group, and totally two groups are symmetrical arranged.
5. scanner head as claimed in claim 1 is characterized in that, the center point coordinate of described light source (3), electronic inductor (1 and 2), reflective mirror (4,5,6,7) is in a plane.
6. scanner head as claimed in claim 1 is characterized in that, the relative position of its each cell configuration, in the XZ plane, with (X, Z) order expression, light source (3) is got+value on the Z axle, and the central point A coordinate of electronic inductor (1) is (49.5,85), the central point B coordinate of electronic inductor (2) is (49.5,85), the coordinate of the central point M of reflective mirror 4 is (69,15), the coordinate of the central point N of reflective mirror 7 is (69,15), the central point C coordinate of reflective mirror 5 is (15,15), the coordinate of the central point D of reflective mirror 6 is (15,15), ∠ 15 gets 20 degree, ∠ 13 gets 64 degree, ∠ 14=∠ 13, ∠ 16=∠ 15.
7. scanner head as claimed in claim 1 is characterized in that, described light source (3) is the one-wavelength laser light source.
8. scanner head as claimed in claim 1 is characterized in that, in the described light source (3) one group collimation and cylindrical lens are made up of 5 collimation lenses and a cylindrical lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99201534 CN2364507Y (en) | 1999-03-18 | 1999-03-18 | Small non-contact symmetric imput type three-D profile scanning head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99201534 CN2364507Y (en) | 1999-03-18 | 1999-03-18 | Small non-contact symmetric imput type three-D profile scanning head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2364507Y true CN2364507Y (en) | 2000-02-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99201534 Expired - Fee Related CN2364507Y (en) | 1999-03-18 | 1999-03-18 | Small non-contact symmetric imput type three-D profile scanning head |
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| Country | Link |
|---|---|
| CN (1) | CN2364507Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101346208B (en) * | 2005-12-23 | 2011-03-30 | 通快机床两合公司 | Scanning head and processor with the same |
| CN101496033B (en) * | 2006-03-14 | 2012-03-21 | 普莱姆森斯有限公司 | Depth-varying light fields for three dimensional sensing |
| CN108693635A (en) * | 2018-04-13 | 2018-10-23 | 东华大学 | The light conversion device and design method of automotive upholstery surface blemish on-line checking |
-
1999
- 1999-03-18 CN CN 99201534 patent/CN2364507Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101346208B (en) * | 2005-12-23 | 2011-03-30 | 通快机床两合公司 | Scanning head and processor with the same |
| CN101496033B (en) * | 2006-03-14 | 2012-03-21 | 普莱姆森斯有限公司 | Depth-varying light fields for three dimensional sensing |
| CN108693635A (en) * | 2018-04-13 | 2018-10-23 | 东华大学 | The light conversion device and design method of automotive upholstery surface blemish on-line checking |
| CN108693635B (en) * | 2018-04-13 | 2020-06-23 | 东华大学 | Light ray converter for online detection of surface flaws of automotive interior parts and design method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |