CN102962586B - Adjustment detecting method of double-optical wedge initial phase - Google Patents
Adjustment detecting method of double-optical wedge initial phase Download PDFInfo
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- CN102962586B CN102962586B CN201210537400.7A CN201210537400A CN102962586B CN 102962586 B CN102962586 B CN 102962586B CN 201210537400 A CN201210537400 A CN 201210537400A CN 102962586 B CN102962586 B CN 102962586B
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- theodolite
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Abstract
The invention relates to an adjustment detecting method of a double-optical wedge initial phase. By virtue of a theodolite and an image-forming principle of parallel light pipes, the two optical wedges are placed in the middle to be adjusted; the optical wedges are adjusted in verticality by the optical wedge image-forming and coincidence of two crosses in the theodolite; the optical wedges are rotated to judge the distances between the optical wedges in multiple locations and the original location, so as to judge whether the two optical wedges are mutually symmetric by 180 degrees or not, thereby realizing adjustment of the initial phase of the two optical wedges. The simple adjusting method is adopted. When the adjustment precision is ensured to a certain degree, the adjustment detection is simple and convenient, and fully prepares for the next operation of the double-optical wedge.
Description
Technical field
The invention belongs to optical field, be specifically related to the method for adjustment of the initial phase of a kind of pair of wedge.
Background technology
In field of laser processing, often adopt four wedges of rotation to make the rotation of the laser light velocity, wherein a pair of wedge is controlled the transversal displacement of light, and another controls the deflection angle of light to wedge.And before carrying out Laser Processing, the installation and debugging of each optics are a very important job.
Two wedges of controlling light transversal displacement, as shown in Figure 1, two wedges relative by driven by motor rotate, and change the distance between two wedges by another motor.In order to guarantee that two wedges are when rotating, light only produces lateral shift, and there is not angular deflection, just require to guarantee the initial phase of two relative wedges: both planes are perpendicular to incident ray, incident ray is through both center, and two wedges with respect to vertical line between the two, to be 180 degree symmetrical.
In prior art, generally need to buy for this reason or customize special instrument for above-mentioned adjustment, apparatus structure is complicated, and the customization cycle is long.
Summary of the invention
For the defect of above-mentioned technical problem and prior art, the present invention proposes a kind of troublesome operation of breaking away from, adopt theodolite and the method for adjustment of parallel light tube to two wedge initial phases, the method had both guaranteed adjustment precision, had simplified again set-up procedure.
The object of the invention is to realize by following technical proposals, specific as follows:
A method of adjustment for the initial phase of pair wedge, comprises the steps:
Two wedge perpendicularity regulate:
1) theodolite, parallel light tube are placed on same level platform and are adjusted, make them all can in the eyepiece of oneself, see the other side's picture, and be adjusted to two picture coincidences;
2) first wedge is positioned in the middle of theodolite and parallel light tube; Adjust this wedge, the cross distributing of this wedge picture and the cross distributing of theodolite from theodolite, observed are overlapped; The light of theodolite of take is axle, 180 ° of rotating wedges, and adjust wedge the cross distributing of this wedge picture and the cross distributing of theodolite are overlapped, make wedge vertical with the light path between theodolite and parallel light tube;
3) second wedge is put in the middle of first wedge and parallel light tube; Adjust second wedge, make this wedge picture cross distributing and and the cross distributing coincidence of parallel light tube; The light of theodolite of take is axle, rotating wedge 180, and adjust wedge the cross distributing of this wedge picture and the cross distributing of parallel light tube are overlapped, make second wedge vertical with the light path between theodolite and parallel light tube; Two wedges are 180 ° of adjustings:
4) second wedge and first wedge are close to; Rotate second wedge, make it possible to observe by theodolite the whole picture of parallel light tube, record the now coordinate (x of the initial picture of parallel light tube
0, y
0);
5) the two wedges of synchronous rotary, record revolves while turning around, the coordinate (x of a plurality of pictures
n, y
n), calculate the distance between n picture and described initial picture:
6) judge whether a plurality of distance values are all less than a setting threshold, if so, two wedges are 180 ° of symmetrical placements; If not, repeating said steps 4) and 5), until a plurality of distance value is all less than a setting threshold, two wedges are 180 ° of symmetrical placements.
Further, described method also comprises the steps:
Regulate the distance between two wedges, make it possible to observe by theodolite the whole picture of parallel light tube, from theodolite, record the position (x of picture
0, y
0); Rotate second wedge 4, while recording this state, the position (x, y) of the picture recording from theodolite;
Calculate the distance between two positions
when this distance is less than the threshold value of regulation, the depth of parallelism of wedge support and perpendicularity are qualified.
The invention has the beneficial effects as follows:
The present invention has adopted a kind of simple method of adjustment, in the situation that adjustment precision obtains certain assurance, adjusts detection easy, for the further work of two wedges has been done sufficient preparation.
Accompanying drawing explanation
Fig. 1 is two wedge fundamental diagrams.
Fig. 2 is for measuring theodolite and the parallel light tube location drawing in the present invention.
Fig. 3 is that the first wedge is positioned at theodolite and the parallel light tube location drawing.
Fig. 4 is that two wedges are positioned at theodolite and the parallel light tube location drawing.
Fig. 5 is two wedges schematic diagrames while being close to.
The specific embodiment
As shown in Figure 2, wherein 1 is theodolite, the 2nd, and parallel light tube.
One, adjust two wedge perpendicularity
1) theodolite 1, parallel light tube 2 are placed on same level platform and are adjusted, make the light path height of theodolite 1 identical with carriage center (i.e. the center of the two wedges) height that wedge is installed.Adjust theodolite and parallel light tube, make them all can in the eyepiece of oneself, see the other side's picture, and be adjusted to two picture coincidences.
2) first wedge 3 is arranged on described support, is put in the middle of theodolite 1 and parallel light tube 2, as Fig. 3, in theodolite 1, reflect the picture of first wedge 3.Adjust first wedge 3, the cross distributing of this picture and the cross distributing of theodolite 1 are overlapped; Rotate the variation of 3 to 180 ° of observation pictures of first wedge, and adjust first wedge 3 cross distributing of picture and the cross distributing of theodolite 1 are overlapped, make first wedge 3 vertical with the light path between theodolite 1 and parallel light tube 2.
3) second wedge 4 is arranged on described support, is put in the middle of first wedge 3 and parallel light tube 2, as Fig. 4, the picture of second wedge 4 of wedge reflection in parallel light tube 2.Adjust second wedge 4, make this picture cross distributing and and the cross distributing coincidence of parallel light tube 2; Rotate the variation of 4 to 180 ° of observation pictures of second wedge, and adjust second wedge 4 make this picture cross distributing and and the cross distributing coincidence of parallel light tube 2, make second wedge 4 vertical with the light path between theodolite 1 and parallel light tube 2.
Two, adjust two wedge 180 degree symmetries
4), when position shown in Fig. 5, second wedge 4 (mobile wedge) and first wedge 3 are close to; Rotate second wedge 4, make it possible to observe by theodolite the whole picture of parallel light tube, record the now coordinate (x0, y0) of parallel light tube picture.
5) the two wedges of synchronous rotary, record revolves while turning around, the coordinate (x of a plurality of pictures
n, y
n), calculate the distance between two positions:
Judge whether a plurality of distance values are all less than a setting threshold, if so, two wedges are 180 ° of symmetrical placements; If not, repeating said steps 4), until a plurality of distance value is all less than a setting threshold, two wedges are 180 ° of symmetrical placements.
Three, detect the depth of parallelism, the perpendicularity of two wedge supports
Because two wedges in the present invention are to be arranged in two planes by mouse cage type structure, when needs move second wedge 4, second wedge 4 is that the bar along mouse cage moves, the depth of parallelism between squirrel-cage bar, and and light between perpendicularity, can affect the path of light between two wedges.
Regulate the distance U between two wedges, make U probably at 80mm place, rotating wedge, the variation of observing and recording picture in parallel light tube with theodolite.From theodolite, record the position (x of picture
0, y
0).Rotate second wedge 4, make it possible to observe by theodolite the whole picture of parallel light tube, observe and record two wedges near the state of the picture with 80mm place.While recording this state, the position (x, y) of the picture recording from theodolite;
Calculate two position (x
0, y
0) and (x, y) between distance, when this distance is less than the threshold value of regulation, the depth of parallelism of wedge support and perpendicularity are qualified.
Above content is in conjunction with concrete preferred embodiment further description made for the present invention; can not assert that the specific embodiment of the present invention only limits to this; for general technical staff of the technical field of the invention; without departing from the inventive concept of the premise; can also make some simple deduction or replace, all should be considered as belonging to the present invention and determine scope of patent protection by submitted to claims.
Claims (2)
1. an adjustment detection method for two wedge initial phases, is characterized in that, comprises the steps:
(1). two wedges are perpendicularity and regulate
1) theodolite, parallel light tube are placed on same level platform and are adjusted, make them all can in the eyepiece of oneself, see the other side's picture, and be adjusted to two picture coincidences;
2) first wedge is positioned in the middle of theodolite and parallel light tube; Adjust this wedge, the cross distributing of this wedge picture and the cross distributing of theodolite from theodolite, observed are overlapped; The light of theodolite of take is axle, 180 ° of rotating wedges, and adjust wedge the cross distributing of this wedge picture and the cross distributing of theodolite are overlapped, make this wedge vertical with the light path between theodolite and parallel light tube;
3) second wedge is put in the middle of first wedge and parallel light tube; Adjust second wedge, make this wedge picture cross distributing and and the cross distributing coincidence of parallel light tube; The light of theodolite of take is axle, 180 ° of rotating wedges, and adjust second wedge the cross distributing of this wedge picture and the cross distributing of parallel light tube are overlapped, make second wedge vertical with the light path between theodolite and parallel light tube;
(2). two wedges are 180 ° of adjustings
4) second wedge and first wedge are close to; Rotate second wedge, make it possible to observe by theodolite the whole picture of parallel light tube, record the now coordinate (x of the initial picture of parallel light tube
0, y
0);
5) the two wedges of synchronous rotary, record revolves while turning around, the coordinate (x of a plurality of pictures
n, y
n), calculate the distance between n picture and described initial picture:
6) judge whether a plurality of distance values are all less than a setting threshold, if so, two wedges are 180 ° of symmetrical placements; If not, repeating said steps 4) and 5), until a plurality of distance value is all less than a setting threshold, two wedges are 180 ° of symmetrical placements.
2. the adjustment detection method of according to claim 1 pair of wedge initial phase, is characterized in that, also comprises the steps:
Regulate the distance between two wedges, make it possible to observe by theodolite the whole picture of parallel light tube, from theodolite, record the position (x of picture
0, y
0); Rotate second wedge, the position (x, y) of the picture recording while recording the state of this whole picture of observing parallel light tube by theodolite from theodolite;
Calculate the distance between two positions
when this distance is less than the threshold value of regulation, the depth of parallelism of wedge support and perpendicularity are qualified.
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| CN201210537400.7A CN102962586B (en) | 2012-12-12 | 2012-12-12 | Adjustment detecting method of double-optical wedge initial phase |
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| CN104422395B (en) * | 2013-09-11 | 2017-02-08 | 中国石油大学(华东) | Method for calibrating small-aperture diaphragm |
| CN104965523B (en) * | 2015-05-13 | 2017-07-11 | 中国科学院光电技术研究所 | Phase detection and adjustment method for composite achromatic prism |
| CN110977153B (en) * | 2019-11-13 | 2020-12-25 | 中国科学院西安光学精密机械研究所 | Control method of spiral scanning laser processing head |
| CN112008238B (en) * | 2020-07-22 | 2021-06-22 | 中国科学院西安光学精密机械研究所 | Initial phase calibration method of laser spiral scanning machining head |
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| US7196784B2 (en) * | 2005-05-10 | 2007-03-27 | Trimble Navigation Limited | Method and apparatus for optical correction of a laser beam |
| US20110317170A1 (en) * | 2006-02-22 | 2011-12-29 | Yung-Chieh Hsieh | Wedge pair for phase shifting |
| KR100982550B1 (en) * | 2008-07-18 | 2010-09-15 | 한국기계연구원 | Laser machining apparatus having compensation module for laser beam precessional motion and laser machining method using thereof |
| CN101526746A (en) * | 2009-01-07 | 2009-09-09 | 上海微电子装备有限公司 | Vertical measuring system capable of adjusting zero-plane position |
| CN102240848B (en) * | 2011-06-15 | 2013-10-23 | 中科中涵激光设备（福建）股份有限公司 | Method for adjusting laser beam to generate dynamic transverse displacement |
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