CN101936732A - Large-span high-straightness laser surface reticle instrument - Google Patents
Large-span high-straightness laser surface reticle instrument Download PDFInfo
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- CN101936732A CN101936732A CN2009100319321A CN200910031932A CN101936732A CN 101936732 A CN101936732 A CN 101936732A CN 2009100319321 A CN2009100319321 A CN 2009100319321A CN 200910031932 A CN200910031932 A CN 200910031932A CN 101936732 A CN101936732 A CN 101936732A
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Abstract
The invention discloses a large-span high-straightness laser surface reticle instrument which comprises a reticle generating system and a reticle detecting system. The reticle detecting system comprises a high resolution CCD camera and a computer. The reticle generating system comprises a single transverse mode laser, a light beam focusing and collimating lens group and a one-dimensional beam expander, wherein the optical devices share one mechanical axis and one optical axis; the light beam focusing and collimating lens group is located in front of the single transverse mode laser; and the one-dimensional beam expander is located in front of the light beam focusing and collimating lens group and is arranged on a two-dimensional smooth fine tuning frame. The sector plane beam generated by the instrument intersects with a plane to be tested to obtain a reticle with length greater than 8 m and straightness reaching 0.01%, and the reticle has adjustable width and high resolution power of plane micro deviation. The instrument can be applied to the flatness display and the quantitative measurement of any plane surface, such as large-area halls, squares, airport road surfaces, highway, large-area wall surfaces and the like.
Description
Technical field
The present invention relates to a kind of laser surface graticule instrument, the high linearity laser surface of particularly a kind of large span graticule instrument.
Background technology
The straight line laser technology is a kind of of optical texture optical tech.One single mode collimated laser beam expands bundle through one dimension and produces a fan-shaped plan light beam, and the prism that one dimension expands bundle can adopt the Bao Weier prism or lean on lens, and this planar light beam tilts to be projeced into surface to be measured, and intersection is a straight line.If the surface be an ideal plane then intersection be ideal line, if the surface have the defective that departs from the plane as projection, sink, faulting of slab ends or sedimentation etc., then intersection image and show its cross-section morphology quantitatively very.
Existing portable graticule instrument is used to detect the defective on small members surface, carries out instant quality control thereby also be used for detecting weaving cloth planar defect.In recent years, the one-lane rut section in road surface that graticule section technology has been widely used in highway detects, but because graticule length less than a track, can not cover a complete track of a complete airfield runway and ordinary road.And online CCD banded optical illumination of array and the infrared banded laser lighting that road disease photography detection technique adopts of initiatively throwing light on exists and strengthens width because of banded light linearity is bad and finally have to improve the laser general power.So a kind of large span, high linearity, and broad-adjustable even straight line laser is that surface, wide visual field disease detects, deviation scene in plane shows and the key of surperficial section chromatographic technique.Large span is meant the segment angle that forms graticule greater than 90 degree, and promptly the graticule length that produces apart from two meters sighting distances of light source claims the large span graticule greater than 4 meters graticule.Linearity is meant the maximum deviation of straight line and the ratio of total line length.
Summary of the invention
The high linearity laser surface of the large span graticule instrument that the object of the present invention is to provide a kind of width-adjustable, has the resolution characteristic of higher little deviation.
The technical solution that realizes the object of the invention is: the high linearity laser surface of a kind of large span graticule instrument, comprise that graticule produces system and graticule detection system, and the graticule detection system comprises high resolution CCD video camera and computing machine; Graticule generation system comprises single-transverse mode laser, light beam focusing collimation lens set and one dimension beam expanding lens, and above-mentioned optical device is mechanical axis and common optical axis altogether; Light beam focusing collimation lens set is positioned at the place ahead of single-transverse mode laser, and the one dimension beam expanding lens is positioned at the place ahead of light beam focusing collimation lens set and is arranged on the level and smooth micropositioning stage of two dimension.Light beam focusing collimation lens set comprises two lens, and these two lenticular spacings are adjustable.
The present invention compared with prior art, its remarkable advantage: 1) the fan-shaped plan light beam that produces of instrument of the present invention and Plane intersects to be measured can obtain length more than 8 meters, linearity reaches ten thousand/ graticule, and the graticule width-adjustable has the resolution characteristic of the higher little deviation in plane; 2) the present invention can be used for the flatness demonstration and the quantitative measurment on any plane surface, as the large-area hall, and square, airport pavement, surfaces such as highway and large tracts of land metope; Can be used for detection plane degree deviation and three-dimensional appearance; 3) but instrument of the present invention places on the carrier car then that road pavement disease pattern, large span pavement track and 3 D deformation detect, can reach 0.1 millimeter to the accuracy of detection of local surface, large tracts of land detection of dynamic precision can reach 0.5 millimeter; 4) having solved prior art, to produce long graticule linearity relatively poor, thereby have a strong impact on the problem of plane deviation measuring accuracy.
The present invention will be further described in detail below in conjunction with accompanying drawing.
Description of drawings
Fig. 1 is the schematic diagram of the high linearity laser surface of large span of the present invention graticule instrument.
Fig. 2 is that the high linearity laser surface of mirror large span graticule instrument synoptic diagram is leant in series connection of the present invention.
Fig. 3 is the high linearity laser surface of a lens type large span in parallel of the present invention graticule instrument synoptic diagram.
Embodiment
In conjunction with Fig. 1, the high linearity laser surface of a kind of large span of the present invention graticule instrument, comprise that graticule produces system and graticule detection system, the graticule detection system comprises high resolution CCD video camera 6 and computing machine 7, is used for the situation on continuous recording, quantitative test and detection surface; Graticule generation system comprises single-transverse mode laser 1, light beam focusing collimation lens set 2 and one dimension beam expanding lens 3, and above-mentioned optical device is mechanical axis and common optical axis altogether; Light beam focusing collimation lens set 2 is positioned at the place ahead of single-transverse mode laser 1, and one dimension beam expanding lens 3 is positioned at the place ahead of light beam focusing collimation lens set 2 and is arranged on the level and smooth micropositioning stage 4 of two dimension.Graticule generation system produces a fan-shaped plan light beam, tilt to project on the plane to be checked, then obtain a broad-adjustable even laser lighting band, the demonstration of its intersection image the defective on plane, the graticule detection system detects the laser lighting band, thereby can be good at the disease pattern and the deformation defect of detection plane.
Above-mentioned light beam focusing collimation lens set 2 comprises two lens, and these two lenticular spacings are adjustable.The lens that two spacings are adjustable guarantee that the output collimated light beam can focus in any measuring distance, obtains fully thin live width in the target location.
The high linearity laser surface of large span of the present invention graticule instrument has two kinds of different implementations, and a kind of is that to lean on the mirror another kind be lens type in parallel in series connection.
In conjunction with Fig. 2, series connection of the present invention is leant on the high linearity laser surface of mirror large span graticule instrument and is also comprised mirror 10 before the pre-service, before this pre-service mirror 10 between light beam focusing collimation lens set 2 and one dimension beam expanding lens 3, and with the two common mechanical axis common optical axis; One dimension beam expanding lens 3 is one and leans on lens 11 that it is adjustable with preceding mirror 10 spacings of pre-service that this leans on lens 11.Lean on lens 11 and be interposed on the level and smooth micropositioning stage 4 of two dimension, can accurately adjust optical axis by the level and smooth micropositioning stage of two dimension, to obtain fully long high linearity graticule 5.
In conjunction with Fig. 3, the one dimension beam expanding lens 3 of the high linearity laser surface of lens type large span in parallel of the present invention graticule instrument is a Bao Weier prism 16, this prism is arranged on the level and smooth micropositioning stage 4 of two dimension, thereby assurance beam expanding lens optical axis and light beam are coaxial and fine-tuning, to obtain the graticule of high linearity.When in use can also be parallel with one another with overlapping prism more, thus the graticule 5 of formation large span.
Below in conjunction with embodiment the present invention is done further detailed description:
It is 1 watt of single transverse mode 532nm laser instrument that the high linearity laser surface of large span of the present invention graticule instrument adopts power, light beam focusing collimation lens set 2 is that 10 millimeters two lens are formed by focal length, the high resolution CCD video camera is 2048 area array CCDs, mirror 10 is between light beam focusing collimation lens set 2 and one dimension beam expanding lens 3 before the pre-service, and with the two common mechanical axis common optical axis; One dimension beam expanding lens 3 is one and leans on lens 11 that leaning on lens 11 is 10～15mm and adjustable with preceding mirror 10 spacings of pre-service.Before the pre-service mirror 10 with lean on lens 11 diameters and all be 5 millimeters.Mirror 10 expands bundle with light earlier before the pre-service, makes the further one dimension expansion of light beam bundle obtain the high linearity straight line laser of large span thereby lean on lens 11.
Said apparatus is installed on to be become on the carrier car various surfaces such as airport, and highway pavement carries out the plane deviation, the equipment of distortion and the three-dimensional chromatography of road surface section.Fan-shaped plan light beam that this device produces and Plane intersects to be measured can obtain length more than 8 meters, linearity reaches ten thousand/ graticule.
On same substrate, put the adjustable prism beam-expanded straight line laser unit of many platform independent side by side, each expands bundle straight line laser unit employing power is 1 watt of single transverse mode 532nm laser instrument, light beam focusing collimation lens set 2 is that 5 millimeters two lens are formed by focal length, the high resolution CCD video camera is 2048 area array CCDs, one dimension beam expanding lens 3 is a Bao Weier prism 16, and this prism is arranged on the level and smooth micropositioning stage 4 of two dimension.The Bao Weier prism is got 85 degree for 16 jiaos.Form the plane fan beam through the Bao Weier prism again after the light process light beam focusing collimation lens set 2 that laser instrument sends.Light beam focusing collimation lens set 2 can be regulated the laser beam foucing position.
Light inclination crosscut illumination road surface then obtains a broad-adjustable even laser lighting band, and detection system adopts high-resolution area array CCD and computing machine, continuous recording and quantitative test and detection surface appearance.This device is installed on and then becomes road pavement disease image on the carrier car and carry out high-resolution line sweep shooting detector.Fan-shaped plan light beam that this device produces and Plane intersects to be measured can obtain length more than 8 meters, linearity reaches ten thousand/ graticule.
Claims (4)
1. the high linearity laser surface of a large span graticule instrument comprises that graticule produces system and graticule detection system, and the graticule detection system comprises high resolution CCD video camera [6] and computing machine [7]; It is characterized in that graticule generation system comprises single-transverse mode laser [1], light beam focusing collimation lens set [2] and one dimension beam expanding lens [3], above-mentioned optical device is mechanical axis and common optical axis altogether; Light beam focusing collimation lens set [2] is positioned at the place ahead of single-transverse mode laser [1], and one dimension beam expanding lens [3] is positioned at the place ahead of light beam focusing collimation lens set [2] and is arranged on the level and smooth micropositioning stage [4] of two dimension.
2. the high linearity laser surface of large span according to claim 1 graticule instrument is characterized in that, light beam focusing collimation lens set [2] comprises two lens, and these two lenticular spacings are adjustable.
3. the high linearity laser surface of large span according to claim 1 and 2 graticule instrument, it is characterized in that, graticule produces system and also comprises the preceding mirror [10] of a pre-service, mirror [10] is positioned between light beam focusing collimation lens set [2] and the one dimension beam expanding lens [3] before this pre-service, and with the two common mechanical axis common optical axis; One dimension beam expanding lens [3] is one and leans on lens [11] that it is adjustable with preceding mirror [10] spacing of pre-service to lean on lens [11].
4. the high linearity laser surface of large span according to claim 1 and 2 graticule instrument is characterized in that one dimension beam expanding lens [3] is a Bao Weier prism [16].
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009100319321A CN101936732A (en) | 2009-07-03 | 2009-07-03 | Large-span high-straightness laser surface reticle instrument |
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| CN2009100319321A CN101936732A (en) | 2009-07-03 | 2009-07-03 | Large-span high-straightness laser surface reticle instrument |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102252638A (en) * | 2011-04-29 | 2011-11-23 | 大连海事大学 | Data splicing technology for measuring flatness of super large plane |
| CN104930973A (en) * | 2015-07-14 | 2015-09-23 | 芜湖德力自动化装备科技有限公司 | Full-automatic measurement controller for dimension of plastic-wood co-extrusion composite board and application method thereof |
| CN106936055A (en) * | 2017-03-11 | 2017-07-07 | 无锡亮源激光技术有限公司 | Parallel array laser line generator |
| CN107462182A (en) * | 2017-09-19 | 2017-12-12 | 电子科技大学 | A kind of cross section profile deformation detecting method based on machine vision and red line laser |
| CN107905073A (en) * | 2017-11-09 | 2018-04-13 | 南京中高知识产权股份有限公司 | The method knead dough smoothness measuring equipment of straight line laser profile scanning surface evenness |
| CN112639401A (en) * | 2018-09-12 | 2021-04-09 | 罗伯特·博世有限公司 | Laser striping machine with improved laser pattern projection |
| CN113674577A (en) * | 2021-08-18 | 2021-11-19 | 石林 | Ribbon type fire drill simulation device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1621816A (en) * | 2003-11-28 | 2005-06-01 | 南京理工大学 | Laser three-dimensional digital road shape instrument |
-
2009
- 2009-07-03 CN CN2009100319321A patent/CN101936732A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1621816A (en) * | 2003-11-28 | 2005-06-01 | 南京理工大学 | Laser three-dimensional digital road shape instrument |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102252638A (en) * | 2011-04-29 | 2011-11-23 | 大连海事大学 | Data splicing technology for measuring flatness of super large plane |
| CN104930973A (en) * | 2015-07-14 | 2015-09-23 | 芜湖德力自动化装备科技有限公司 | Full-automatic measurement controller for dimension of plastic-wood co-extrusion composite board and application method thereof |
| CN106936055A (en) * | 2017-03-11 | 2017-07-07 | 无锡亮源激光技术有限公司 | Parallel array laser line generator |
| CN107462182A (en) * | 2017-09-19 | 2017-12-12 | 电子科技大学 | A kind of cross section profile deformation detecting method based on machine vision and red line laser |
| CN107905073A (en) * | 2017-11-09 | 2018-04-13 | 南京中高知识产权股份有限公司 | The method knead dough smoothness measuring equipment of straight line laser profile scanning surface evenness |
| CN112639401A (en) * | 2018-09-12 | 2021-04-09 | 罗伯特·博世有限公司 | Laser striping machine with improved laser pattern projection |
| CN113674577A (en) * | 2021-08-18 | 2021-11-19 | 石林 | Ribbon type fire drill simulation device |
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Application publication date: 20110105 |