CN117761910A - Kude optical path adjustment method based on autocollimator - Google Patents
Kude optical path adjustment method based on autocollimator Download PDFInfo
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Abstract
The invention discloses a kude optical path adjustment method based on an auto-collimator, which adopts the auto-collimator to complete the adjustment of the kude optical path, and sequentially completes the installation adjustment of all the kude reflectors by a strategy combining mechanical positioning adjustment and digital interpretation of the auto-collimator in the adjustment, so that the alignment precision of the kude reflectors reaches the optical alignment level, and the high-precision adjustment of the kude optical path is realized; after the adjustment is completed, the position change of the cross-hair image of the auto-collimator is observed through rotating the azimuth axis and the pitching axis of the servo turntable, and the kude optical path adjustment precision result is obtained. The invention effectively solves the problem of high-precision alignment of various kude reflectors in kude optical path adjustment, and simultaneously utilizes the automatic interpretation function of the angle difference between the reflected back cross wire image and the center cross wire of the auto-collimator, can quantitatively obtain the shape adjustment error, and eliminates errors caused by human eye aiming, light environment and the like.
Description
Technical Field
The invention belongs to the technical field of light path adjustment, and relates to a kude light path adjustment method based on an autocollimator.
Background
The kude optical path is installed in the servo turntable, is a typical total reflection optical path, changes the transmission direction of light by reflection through a plurality of high-precision kude reflectors, and realizes the optical path transmission in a specified direction within the range of 360 DEG horizontal, 10 DEG-90 DEG pitching by controlling the rotation of the servo turntable. The kude optical path is widely applied to photoelectric tracking emission systems such as a laser emission system, a laser tracking system, a photoelectric theodolite and the like, and the angle of an optical axis of the kude optical path emitted by a servo turntable cannot be changed in the rotation process, so that the alignment precision of the kude reflector on the kude optical path directly determines the angle change of the kude optical path to the emergent optical axis, and the kude optical path alignment method is very important for realizing the accurate alignment of all the kude reflectors on the kude optical path and is core content of the adjustment of the kude optical path.
Patent CN108828765B discloses a method for adjusting a cusde optical path based on a double theodolite, which mainly aims at the cusde optical path in a U-shaped turntable, utilizes two theodolites and an auxiliary plane mirror to realize the accurate alignment of each plane mirror, and requires the positioning and installation of part of the mirrors according to preset positions and through mechanical references.
The patent 114755818A discloses a device and a method for adjusting a kude optical path of a large-caliber telescope, which mainly aims at the kude optical path in a large-caliber U-shaped turntable, adopts an internal focusing light pipe to project an optical fiber point light source to simulate an optical axis, uses a CCD to receive a projected light spot, and uses an image to understand the circle center of a light spot track to find the revolving shaft of a turntable shaft system to guide the two-dimensional inclination adjustment of a corresponding reflecting mirror.
Disclosure of Invention
Object of the invention
The purpose of the invention is that: aiming at the adjustment requirement of a servo turntable kude optical path, the invention overcomes the defects of the existing adjustment method, provides a kude optical path adjustment method based on an auto-collimator, completes the high-precision adjustment of the kude optical path, confirms the principle on which each adjustment step is based and the requirement to be met by optimally setting the adjustment method, the step flow and the like, has fewer adjustment steps and less required instruments and equipment compared with the prior art, improves the adjustment efficiency, has simple and easy operation flow, and effectively solves the high-precision alignment problem of each kude reflector in the kude optical path adjustment, so the adjustment method has the advantages of high alignment precision, simple operation flow, high adjustment efficiency, high economy and the like.
(II) technical scheme
In order to solve the technical problems, the invention provides a kude optical path adjustment method based on an auto-collimator, wherein the auto-collimator is adopted to complete the adjustment of the kude optical path, and the installation adjustment of all the kude reflectors is sequentially completed through a strategy of combining mechanical positioning adjustment and digital interpretation of the auto-collimator in the adjustment, so that the alignment precision of the kude reflectors reaches the optical alignment level, and the high-precision adjustment of the kude optical path is realized; after the adjustment is completed, the position change of the cross-hair image of the auto-collimator is observed through rotating the azimuth axis and the pitching axis of the servo turntable, so that the kude optical path adjustment precision result can be obtained.
The invention provides a kude optical path adjustment system of an auto-collimator, which comprises a servo turntable, wherein the servo turntable is provided with an azimuth axis and a pitching axis, a kude optical path is arranged in the servo turntable, and the kude optical path sequentially comprises a kude reflector I, a kude reflector II and a kude reflector III from an inlet to an outlet, wherein the kude reflector I is fixed and arranged in a servo turntable base, and the kude reflector II and the kude reflector III can rotate around the azimuth axis and can rotate around the pitching axis; the optical axis reflected by the first kude reflector is aligned with the azimuth axis of the servo turntable, and the optical axis reflected by the second kude reflector is aligned with the pitching axis of the servo turntable.
In order to achieve the alignment, the kude optical path adjustment method of the auto-collimator of the embodiment comprises the following steps:
(1) A standard right-angle prism is placed in advance at the mounting position of a first kude reflector in a servo turntable base, an auxiliary adjustable plane reflector is mounted at the outlet of a kude light path, an autocollimator is placed outside the servo turntable, and light emitted by the autocollimator sequentially passes through the standard right-angle prism, a second kude reflector, a third kude reflector, an auxiliary adjustable plane reflector, a third kude reflector, a second kude reflector and the reflection of the standard right-angle prism and returns to the autocollimator.
The angle of the auxiliary plane reflecting mirror is adjusted by carrying out the circumferential motion of the azimuth axis on the servo turntable, so that the cross wire image received by the auto-collimator does not rotate along with the rotation of the azimuth axis of the servo turntable;
(2) The position and the placement angle of the auto-collimator are adjusted, and the light emitted by the auto-collimator sequentially passes through a standard right-angle prism, a second kude reflector, a third kude reflector, an auxiliary adjustable plane reflector, a third kude reflector, a second kude reflector and a standard right-angle prism to be reflected back to the auto-collimator, so that a cross wire image received by the auto-collimator is overlapped with an auxiliary cross wire in the center of a field of view of the auto-collimator;
(3) Removing a standard right-angle prism in a servo turntable base, initially installing a first kude reflector through mechanical positioning, and enabling light emitted by an auto-collimator to sequentially pass through the first kude reflector, the second kude reflector, the third kude reflector, an auxiliary adjustable plane reflector, the third kude reflector, the second kude reflector and the first kude reflector to be reflected back to the auto-collimator, so that the installation angle of the first kude reflector is further adjusted, and a cross wire image received by the auto-collimator is overlapped with an auxiliary cross wire in the center of a field of view of the auto-collimator;
(4) The angle of the adjustable auxiliary plane reflector is adjusted by rotating the pitching axis of the servo turntable, and the light emitted by the auto-collimator sequentially passes through the first kude reflector, the second kude reflector, the third kude reflector, the auxiliary adjustable plane reflector, the third kude reflector, the second kude reflector and the first kude reflector to be reflected back to the auto-collimator, so that the cross-hair image received by the auto-collimator does not rotate along with the rotation of the pitching axis of the servo turntable;
(5) The installation angle of the second kude reflector is adjusted, light emitted by the auto-collimator sequentially passes through the first kude reflector, the second kude reflector, the third kude reflector, the auxiliary adjustable plane reflector, the third kude reflector, the second kude reflector and the first kude reflector to be reflected back to the auto-collimator, so that a cross wire image received by the auto-collimator is overlapped with an auxiliary cross wire in the center of a field of view of the auto-collimator, namely the auto-collimator is in an auto-collimation state again, and the transmission between the azimuth axis and the pitching axis of the servo turntable is completed through the second kude reflector, so that after the kude light path of the servo turntable is assembled and adjusted, incident light can sequentially pass through the first kude reflector, the second kude reflector and the third kude reflector to be reflected and adjusted.
(6) After the kude light path is adjusted, checking the adjustment precision of the kude light path, sequentially passing the light emitted by the auto-collimator through a kude reflector I, a kude reflector II, a kude reflector III, an auxiliary adjustable plane reflector, a kude reflector III, a kude reflector II and a kude reflector I, and reflecting the light back to the auto-collimator, wherein the auto-collimator automatically and quantitatively judges the difference condition of the received cross hair image and the auxiliary cross hair at the center of the self view field, and rotates the azimuth axis and the pitching axis of the servo turntable, and sequentially recording the readings of the auto-collimator and finding the maximum value of the readings, wherein 1/2 of the value is the adjustment precision of the kude light path.
(III) beneficial effects
The kude optical path adjustment method based on the autocollimator provided by the technical scheme is used for completing high-precision adjustment of the kude optical path, and by setting the adjustment method, the step flow and the like, the principle on which each adjustment step is based and the requirements to be met are confirmed.
Drawings
FIG. 1 is a schematic diagram of the composition of the Coulter optical path of the present invention.
Fig. 2 is a schematic view of the installation position of the standard rectangular prism and the auxiliary plane mirror of the present invention.
FIG. 3 is a schematic view of a mounting of the kude reflector of the present invention.
FIG. 4 is a schematic diagram of a second embodiment of the present invention.
FIG. 5 is a schematic diagram showing the detection of the kude optical path adjustment accuracy of the present invention.
In the figure, 1, an autocollimator; 2. a standard right angle prism; 3. a first kude reflector; 4. a second kude reflector; 5. a kude reflector III; 6. auxiliary adjustable plane mirror.
Detailed Description
To make the objects, contents and advantages of the present invention more apparent, the following detailed description of the present invention will be given with reference to the accompanying drawings and examples.
Referring to fig. 1, a kude optical path sequentially comprises a kude reflector I3, a kude reflector II 4 and a kude reflector III 5 from an inlet to an outlet, the kude optical path is installed in a servo turntable, the servo turntable has the functions of azimuth axis rotation and pitching axis rotation, the kude reflector I3 is fixed and installed in a servo turntable base, the kude reflector II 4 and the kude reflector III 5 can rotate around the azimuth axis, and the kude reflector III 5 can rotate around the pitching axis. The incident optical axis of the second kude reflector 4 is aligned with the azimuth axis of the servo turntable, the emergent optical axis of the second kude reflector 4 is aligned with the pitching axis of the servo turntable, the third kude reflector 5 is arranged in a load cabin of the servo turntable and used for transmitting turning of an optical path, and the mechanical positioning, installation and fixation are adopted in the kude optical path.
In order to realize the adjustment of the kude optical path and realize the alignment of the optical axis, the kude optical path adjustment method based on the auto-collimator in the embodiment comprises the following steps:
as shown in fig. 2, a standard rectangular prism 2 is placed in advance at the installation position of a first kude reflector 3 in a servo turntable base, an auxiliary adjustable plane reflector 6 is installed at the outlet of a kude light path, the autocollimator 1 is placed outside the servo turntable, and light emitted by the autocollimator 1 sequentially passes through the standard rectangular prism 2, a second kude reflector 4, a third kude reflector 5, the auxiliary adjustable plane reflector 6, the third kude reflector 5, the second kude reflector 4 and the reflection of the standard rectangular prism 2 to return to the autocollimator 1. Keeping the pitching axis of the servo turntable stationary, and adjusting the angle of the auxiliary plane reflector 6 by carrying out circumferential rotation on the azimuth axis of the servo turntable, so that the cross wire image received by the auto-collimator 1 does not rotate along with the rotation of the azimuth axis of the servo turntable, and the normal line of the plane reflector 6 can be in a parallel state with the azimuth axis of the servo turntable;
step two, adjusting the position and the placement angle of the auto-collimator 1, wherein the light emitted by the auto-collimator 1 sequentially passes through a standard right-angle prism 2, a second kude reflector 4, a third kude reflector 5, an auxiliary adjustable plane reflector 6, a third kude reflector 5, a second kude reflector 4 and the standard right-angle prism 2 to be reflected back to the auto-collimator 1, so that a cross wire image received by the auto-collimator 1 is overlapped with an auxiliary cross wire in the center of a self view field, namely the auto-collimator 1 is in an auto-collimation state;
step three, as shown in fig. 3, the autocollimator 1 is in an autocollimation state, a standard right-angle prism 2 in a servo turntable base is removed, a first kude reflector 3 is installed and adjusted through mechanical positioning, light emitted by the autocollimator 1 sequentially passes through the first kude reflector 3, the second kude reflector 4, the third kude reflector 5, an auxiliary adjustable plane reflector 6, the third kude reflector 5, the second kude reflector 4 and the first kude reflector 3 to be reflected back to the autocollimator 1, the installation angle of the first kude reflector 3 is further adjusted, a cross wire image received by the autocollimator 1 is overlapped with an auxiliary cross wire in the center of a field of view of the autocollimator 1, and installation of the first kude reflector 3 is completed, and at the moment, an emergent optical axis of the autocollimator 1 represents an azimuth rotation axis of the servo turntable;
step four, as shown in fig. 4, keeping the azimuth axis of the servo turntable stationary, adjusting the angle of the adjustable auxiliary plane mirror 6 by rotating the pitch axis of the servo turntable, wherein the light emitted by the auto-collimator 1 sequentially passes through the first kude mirror 3, the second kude mirror 4, the third kude mirror 5, the auxiliary adjustable plane mirror 6, the third kude mirror 5, the second kude mirror 4 and the first kude mirror 3 to be reflected back to the auto-collimator 1, so that the cross wire image received by the auto-collimator 1 does not rotate along with the rotation of the pitch axis of the servo turntable, namely the normal line of the auxiliary adjustable plane mirror 6 is in a parallel state with the pitch axis of the servo turntable;
step five, adjusting the angle of a second kude reflector (4), and enabling light emitted by the auto-collimator (1) to sequentially pass through a first kude reflector (3), a second kude reflector (4), a third kude reflector (5), an auxiliary adjustable plane reflector (6), a third kude reflector (5), a second kude reflector (4) and the first kude reflector (3) to be reflected back to the auto-collimator (1), so that a cross wire image received by the auto-collimator (1) is overlapped with an auxiliary cross wire in the center of a self view field, namely the auto-collimator (1) is in an auto-collimation state again, and transmission between an azimuth axis and a pitching axis of a servo turntable is completed through the second kude reflector (4), and thus the kude light path of the servo turntable is assembled and adjusted;
step six, as shown in fig. 5, after the kude optical path is adjusted, checking the adjustment precision of the kude optical path, and sequentially passing the light emitted by the auto-collimator 1 through the kude reflector I3, the kude reflector II 4, the kude reflector III 5, the auxiliary adjustable plane reflector 6, the kude reflector III 5, the kude reflector II 4 and the kude reflector I3 to reflect back to the auto-collimator 1, and rotating the servo turntable along the azimuth axis and the pitch axis, wherein in the process, the readings of the auto-collimator 1 are sequentially recorded and the maximum value of the readings is found, and 1/2 of the value is the adjustment precision of the kude optical path.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and variations could be made by those skilled in the art without departing from the technical principles of the present invention, and such modifications and variations should also be regarded as being within the scope of the invention.
Claims (10)
1. A kude optical path adjustment system for an autocollimator, comprising: the servo turntable is provided with an azimuth axis and a pitching axis, the Extra optical path is arranged in the servo turntable, and sequentially comprises an Extra mirror I, an Extra mirror II and an Extra mirror III from an inlet to an outlet, wherein the Extra mirror I is fixed and arranged in a servo turntable base, the Extra mirror II and the Extra mirror III can rotate around the azimuth axis, and the Extra mirror III can rotate around the pitching axis; the optical axis reflected by the first kude reflector is aligned with the azimuth axis of the servo turntable, and the optical axis reflected by the second kude reflector is aligned with the pitching axis of the servo turntable.
2. The kude optical path adjustment method based on the autocollimator is characterized in that the kude optical path adjustment system is adopted to realize the kude optical path adjustment, the kude optical path adjustment method adopts the autocollimator to complete the adjustment of the kude optical path, and the installation adjustment of all the kude reflectors is sequentially completed through a strategy combining mechanical positioning adjustment and digital interpretation of the autocollimator in the adjustment, so that the alignment precision of the kude optical path reaches the optical alignment level, and the high-precision adjustment of the kude optical path is realized; after the adjustment is completed, the position change of the cross-hair image of the auto-collimator is observed through rotating the azimuth axis and the pitching axis of the servo turntable, and the kude optical path adjustment precision result is obtained.
3. The autocollimator-based kude optical path adjustment method according to claim 1, characterized by comprising the steps of:
s1) adjusting the installation position of a first kude reflector;
s2) adjusting the position and the placement angle of the autocollimator;
s3) adjusting the installation angle of the first kude reflector to enable the cross silk image received by the auto-collimator to coincide with the auxiliary cross silk at the center of the self view field;
s4) adjusting the angle of the adjustable auxiliary plane reflecting mirror by rotating the pitching axis of the servo turntable, so that the cross hair image received by the auto-collimator does not rotate along with the rotation of the pitching axis of the servo turntable;
s5) adjusting the installation angle of the second kude reflector, and enabling the auto-collimator to be in an auto-collimation state again, wherein the transmission between the azimuth axis and the pitching axis of the servo turntable is completed through the second kude reflector, so that the kude light path of the servo turntable is assembled and adjusted.
4. The method for adjusting a kude optical path based on an autocollimator according to claim 3, wherein in the step S1), a standard right angle prism is placed in advance at the installation position of the kude mirror I in a base of a servo turntable, an auxiliary adjustable plane mirror is installed at the exit of the kude optical path, the autocollimator is placed outside the servo turntable, and the light emitted by the autocollimator is reflected back to the autocollimator through the standard right angle prism, the kude mirror II, the kude mirror III, the auxiliary adjustable plane mirror, the kude mirror III, the kude mirror II and the standard right angle prism in sequence; the angle of the auxiliary plane reflecting mirror is adjusted by carrying out the circumferential motion of the azimuth axis on the servo turntable, so that the cross wire image received by the auto-collimator does not rotate along with the rotation of the azimuth axis of the servo turntable.
5. The method for adjusting a kude optical path based on an auto-collimator according to claim 4, wherein in step S2), the position and the placement angle of the auto-collimator are adjusted, and the light emitted from the auto-collimator sequentially passes through a standard right angle prism, a kude reflector two, a kude reflector three, an auxiliary adjustable plane reflector, a kude reflector three, a kude reflector two and a standard right angle prism to be reflected back to the auto-collimator, so that the cross wire image received by the auto-collimator coincides with the auxiliary cross wire in the center of the self field of view.
6. The method for adjusting a kude optical path based on an auto-collimator according to claim 5, wherein in step S3), a standard rectangular prism in a base of the servo turntable is removed, and the kude mirror is initially installed by mechanical positioning, and the light emitted from the auto-collimator sequentially passes through the kude mirror one, the kude mirror two, the kude mirror three, the auxiliary adjustable plane mirror, the kude mirror three, the kude mirror two and the kude mirror one and is reflected back to the auto-collimator, so that the installation angle of the kude mirror one is further adjusted, and a cross wire image received by the auto-collimator coincides with an auxiliary cross wire in the center of a field of view of the auto-collimator.
7. The method for adjusting a kude optical path based on an auto-collimator according to claim 6, wherein in step S4), the angle of the adjustable auxiliary plane mirror is adjusted by rotating the pitch axis of the servo turntable, and the light emitted from the auto-collimator is reflected back to the auto-collimator through the kude mirror one, the kude mirror two, the kude mirror three, the auxiliary adjustable plane mirror, the kude mirror three, the kude mirror two, and the kude mirror one in order, so that the cross silk image received by the auto-collimator does not rotate with the rotation of the pitch axis of the servo turntable.
8. The method for adjusting the kude optical path based on the autocollimator according to claim 7, wherein in the step S5), the installation angle of the kude reflector II is adjusted, the light emitted by the autocollimator is reflected back to the autocollimator through the kude reflector I, the kude reflector II, the kude reflector III, the auxiliary adjustable plane reflector, the kude reflector II and the kude reflector I in sequence, so that a cross wire image received by the autocollimator coincides with an auxiliary cross wire in the center of a self field of view, namely the autocollimator is in an autocollimation state again, the transmission between the azimuth axis and the pitching axis of the servo turntable is completed through the kude reflector II, and the incident light can be subjected to the adjustment of the kude optical path through the reflection of the kude reflector I, the kude reflector II and the kude reflector III in sequence.
9. The method for adjusting a kude optical path based on an auto-collimator according to claim 8, further comprising step S6) of checking the adjustment accuracy of the kude optical path after the kude optical path is adjusted.
10. The method for adjusting the optical path of the kude light based on the auto-collimator according to claim 9, wherein in the step S6), the light emitted by the auto-collimator sequentially passes through the kude reflector I, the kude reflector II, the kude reflector III, the auxiliary adjustable plane reflector, the kude reflector III, the kude reflector II and the kude reflector I and is reflected back to the auto-collimator, the auto-collimator automatically and quantitatively judges the difference condition between the received cross wire image and the auxiliary cross wire at the center of the self field of view, the servo turntable is rotated by an azimuth axis and a pitching axis, the reading of the auto-collimator is sequentially recorded in the process, the maximum value of the reading is found, and 1/2 of the maximum value is the adjustment precision of the kude light path.
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| CN202311633309.XA CN117761910A (en) | 2023-12-01 | 2023-12-01 | Kude optical path adjustment method based on autocollimator |
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| CN202311633309.XA CN117761910A (en) | 2023-12-01 | 2023-12-01 | Kude optical path adjustment method based on autocollimator |
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