CN113267146B - Method and system for calibrating parallelism of heterodromous deflection light pipe based on double-mirror splicing - Google Patents
Method and system for calibrating parallelism of heterodromous deflection light pipe based on double-mirror splicing Download PDFInfo
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- CN113267146B CN113267146B CN202110517662.6A CN202110517662A CN113267146B CN 113267146 B CN113267146 B CN 113267146B CN 202110517662 A CN202110517662 A CN 202110517662A CN 113267146 B CN113267146 B CN 113267146B
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Abstract
The invention relates to a method and a system for calibrating the parallelism of a heterodromous folding light pipe based on double-mirror splicing. The method comprises the following steps: step 1, setting a system; step 2, adjusting the azimuth angle and the pitch angle of the reflectors of the first planar reflector device and the second planar reflector device respectively through the same high-precision gyrotheodolite so that the north azimuth value L and the pitch value I of the reflectors are the same, and realizing double-mirror surface splicing; step 3, arranging the anisotropic refractive light tube to be measured, and measuring the azimuth value L of the reflector of the second plane reflector device by using the high-precision gyrotheodolite in the step 21And a pitch value I1The high-precision gyrotheodolite is used for measuring the azimuth value L of the reflector of the first plane reflector device through the anisotropic refraction light tube to be measured by rotating the collimation part while keeping the position of the high-precision gyrotheodolite unchanged2And a pitch value I2According to equation 1: Δ L ═ L1‑L2180 ° and equation 2: Δ I ═ I1+I2‑2ia-calculating the azimuth error Δ L and the pitch error Δ I by 180 °.
Description
Technical Field
The invention relates to calibration of the parallelism of a different-direction folding light pipe, in particular to a method and a system for calibrating the parallelism of the different-direction folding light pipe based on double-mirror splicing.
Background
The folding light pipe is an optical instrument, is widely applied to the field of directional aiming at present, and is an important component of an automatic aiming platform. The main function of the folding light pipe is to establish the connection between the optical transfer device and the inertial measurement unit platform, realize the vertical transfer of the azimuth reference information under a certain altitude difference condition, and finally assist in completing the positioning and orientation.
The light deflecting pipes are mainly divided into a homodromous light deflecting pipe and a heterodromous light deflecting pipe, wherein the same light entering and exiting directions are homodromous, and the opposite light entering and exiting directions are heterodromous. The parallelism of light entering and exiting of the deflection light pipe is the most important performance index, and can be divided into errors in two directions, namely an azimuth error and a pitching error. The existing calibration method for the light parallel degree of the light entering and exiting of the anisotropic refractive light tube generally adopts a large-caliber plane mirror method and a double-warp and weft instrument cross-aiming method, and both the two methods have certain limitations.
The aperture of the plane mirror adopted by the large-aperture plane mirror method is determined according to the height difference between the light outlet and the light inlet of the to-be-detected anisotropic refractive light tube, and the aperture of the plane mirror is slightly larger than the height difference between the light outlet and the light inlet of the to-be-detected anisotropic refractive light tube. On one hand, the larger the height difference between the light outlet and the light inlet of the to-be-measured anisotropic refractive light tube is, the larger the aperture of the required plane mirror is, the larger the volume and the weight of the large-aperture plane mirror are, so that the instrument setting in the calibration process is complicated, and the collision risk is high; on the other hand, the large-diameter plane mirror has a long manufacturing period and is extremely expensive. Therefore, the calibration risk of the large-caliber plane mirror method is high and the cost is high.
The double-theodolite mutual aiming method adopts two theodolites, the two theodolites need to be used for mutual aiming in the calibration process, the two theodolites have respective visibility adjusting errors and focusing errors during mutual aiming, the two theodolites have respective sighting errors, the errors can not be avoided in the double-theodolite mutual aiming method, and the final comprehensive calibration precision is poor. Therefore, the comprehensive calibration precision of the double-warp and weft instrument cross-sight method is not high.
Disclosure of Invention
The invention aims to solve the technical problems that in the existing anisotropic refraction and rotation light pipe calibration, a large-caliber plane mirror method has high calibration risk and high cost, and a double-warp and weft instrument cross-aiming method has low comprehensive calibration precision, and provides a method and a system for calibrating the parallelism of the anisotropic refraction and rotation light pipe based on double-mirror splicing.
The technical solution of the invention is as follows:
the invention provides a method for calibrating the parallelism of a heterodromous folding light pipe based on double-mirror splicing, which comprises the following steps:
step 1. set up the system
The method comprises the following steps that a vertical one-dimensional guide rail is arranged, a first sliding translation table and a second sliding translation table are arranged on the vertical one-dimensional guide rail, and the first sliding translation table and the second sliding translation table can slide along the vertical one-dimensional guide rail; arranging a first plane mirror device on a first sliding translation table, arranging a second plane mirror device on a second sliding translation table, and arranging azimuth and elevation two-way fine adjustment mechanisms on the first plane mirror device and the second plane mirror device;
Step 2.1: adjusting the first sliding translation table and the second sliding translation table to make the height distance between the centers of the reflectors of the first planar reflector device and the second planar reflector device consistent with the height difference between the light outlet and the light inlet of the to-be-detected anisotropic refractive light tube;
step 2.2: the azimuth angle and the pitch angle of the first plane mirror device and the second plane mirror device are respectively adjusted by the same high-precision gyrotheodolite, so that the north azimuth value L and the pitch value I of the reflectors of the first plane mirror device and the second plane mirror device are the same, and double-mirror surface splicing is realized;
step 3, calibrating the parallelism of the anisotropic deflection light tube to be tested
Step 3.1: placing the to-be-detected anisotropic refraction light pipe at one side of the vertical one-dimensional guide rail, and ensuring that the height of the center of a light inlet of the to-be-detected anisotropic refraction light pipe is equal to the height of the center of a reflector of the second plane reflector device, and the height of the center of a light outlet of the to-be-detected anisotropic refraction light pipe is equal to the height of the center of a reflector of the first plane reflector device;
step 3.2: placing the high-precision gyrotheodolite used in the step 2 between the light inlet of the anisotropic refraction light tube to be detected and the vertical one-dimensional guide rail, and ensuring that the high-precision gyrotheodoliteThe central height of the high-precision gyrotheodolite is equal to the central height of a light inlet of the anisotropic refraction light tube to be detected, and the central height of the high-precision gyrotheodolite is equal to the central height of a reflector of the second plane reflector device; leveling high-precision gyrotheodolite, collimating and aiming the reflector of the second planar reflector device by using the high-precision gyrotheodolite and recording the azimuth value L1And a pitch value I1；
The high-precision gyrotheodolite is fixed in position, the sighting part is rotated to aim the telescope objective of the high-precision gyrotheodolite at the light inlet of the anisotropic refraction light tube to be measured, the high-precision gyrotheodolite is used for collimating and sighting the reflector of the first plane reflector device through the anisotropic refraction light tube to be measured and recording the azimuth value L2And a pitch value I2；
According to equation 1: Δ L ═ L1-L2180 ° and equation 2: Δ I ═ I1+I2-2iaCalculating the azimuth error delta L and the pitching error delta I of the anisotropic refractive light tube to be measured at 180 degrees, namely completing the parallelism calibration of the light and the light of the refractive light tube to be measured, wherein IaIs single-time collimation zero difference of a high-precision gyrotheodolite.
Further, the specific process of step 2.2 is as follows:
1) selecting a reference plane mirror device: selecting any one of the first plane mirror device and the second plane mirror device as a reference plane mirror device, and the other one as a plane mirror device to be leveled;
2) measurement reference plane mirror device: adjusting the high-precision gyrotheodolite to enable the center height of the high-precision gyrotheodolite to be equal to the center height of a reflector of the reference plane reflector device, leveling the high-precision gyrotheodolite, collimating and aiming the reflector of the reference plane reflector device by using the high-precision gyrotheodolite, observing a self-alignment image of the high-precision gyrotheodolite, adjusting by using a pitch angle fine adjustment mechanism on the reference plane reflector device to enable the vertical angle of the self-alignment image to be 0 +/-15', and recording the north direction position value L and the pitch value I of the reflector of the reference plane reflector device at the moment;
3) adjusting the reflector device of the surface to be leveled: adjusting the high-precision gyrotheodolite in step 2), make its central altitude and wait to level the speculum central altitude of a surface speculum device equal height, level the high-precision gyrotheodolite, arrange L and I respectively in the north azimuth value and the every single move value of high-precision gyrotheodolite, keep high-precision gyrotheodolite rigidity, observe the speculum auto-alignment of waiting to level the surface speculum device through the high-precision gyrotheodolite, and use and wait to level the position on the surface speculum device and adjust to every single move two-way fine-tuning, the north azimuth value and the every single move value of the speculum auto-alignment of waiting to level the surface speculum device are L and I respectively, stop adjusting, accomplish the double mirror concatenation.
Furthermore, the high-precision gyrotheodolite has an auto-collimation function, the first return accuracy is better than 0.5 ", and the north-seeking orientation accuracy is better than 2.5". The high-precision gyrotheodolite is a class I theodolite applied to the fields of first-class triangulation and precision engineering measurement, and is high in precision and small in accidental error.
The invention also provides a system for calibrating the parallelism of the heterodromous turning light pipe based on double-mirror splicing, which comprises a double-mirror splicing device and a high-precision gyrotheodolite;
the double-mirror surface splicing device comprises a vertical one-dimensional guide rail, a first sliding translation table, a second sliding translation table, a first plane reflector device and a second plane reflector device, wherein the first sliding translation table and the second sliding translation table are slidably arranged on the vertical guide rail of the vertical one-dimensional guide rail and have a self-locking function; the first plane mirror device is fixedly connected to the first sliding translation table, and the second plane mirror device is fixedly connected to the second sliding translation table; the first plane reflector device and the second plane reflector device are both provided with a mirror frame and an adjustable base; the adjustable base is provided with a position and pitching two-direction fine adjustment mechanism;
the high-precision gyrotheodolite can adjust the azimuth and pitching two-way fine adjustment mechanism of the reflectors of the first plane reflector device and the second plane reflector device, so that the north azimuth value L and the pitching two-way fine adjustment mechanism of the first plane reflector device and the second plane reflector device are enabled to be in a north directionThe values I are the same, and double-mirror surface splicing is completed; the high-precision gyrotheodolite is arranged between the vertical one-dimensional guide rail and the anisotropic refraction light tube to be detected when the anisotropic refraction light tube to be detected is calibrated, the central height of the high-precision gyrotheodolite is equal to the central height of a light inlet of the anisotropic refraction light tube to be detected in height and equal to the central height of a reflector of the second plane reflector device in height, and the high-precision gyrotheodolite measures the azimuth value L of the reflector of the second plane reflector device at the same position1And a pitch value I1And measuring the orientation value L of the reflector of the first plane reflector device through the anisotropic refractive light tube to be measured2And a pitch value I2。
Furthermore, the reflecting mirror is made of K9 glass, the caliber is phi 80 mm-phi 100mm, the inner mirror surface is plated with a reflecting film, the visible reflectivity is over 95 percent, and the surface shape precision RMS value is not lower than lambda/20.
Furthermore, the fine adjustment range of the azimuth and pitching two-way fine adjustment mechanism is-2 degrees to 2 degrees.
Furthermore, the vertical one-dimensional guide rail is arranged in parallel by double rails, the first sliding translation table and the second sliding translation table are in screw transmission on the vertical one-dimensional guide rail, and the straightness of the guide rail of the vertical one-dimensional guide rail is superior to 0.05 mm. The excellent straightness of the guide rail ensures the stability of the double-mirror reflecting device.
Furthermore, the length of the vertical one-dimensional guide rail is 1200 mm-1300 mm, the two ends of the vertical one-dimensional guide rail are respectively provided with an upper end mechanical limit and a lower end mechanical limit, the adjustable distance between the first sliding translation table and the second sliding translation table is 300 mm-1000 mm, and the calibration requirement of the light outgoing and incoming parallelism of the anisotropic refractive light tube with the height difference of 300 mm-1000 mm between the light outgoing port and the light incoming port can be met.
Furthermore, the first sliding translation platform is arranged above the vertical one-dimensional guide rail, the effective stroke of the first sliding translation platform is 700mm from the upper end of the vertical one-dimensional guide rail to the lower end of the vertical one-dimensional guide rail through mechanical limit, and the bearing capacity is not lower than 5 kg.
Furthermore, the second sliding translation platform is arranged below the vertical one-dimensional guide rail, the effective stroke of the second sliding translation platform is 700mm from the mechanical limit of the lower end of the vertical one-dimensional guide rail, and the bearing capacity is not lower than 5 kg.
Compared with the prior art, the invention has the beneficial effects that:
1. high precision. The invention adopts the same high-precision gyrotheodolite, compared with the double-warp-and-weft instrument cross-aiming method, the error source of the theodolite is effectively reduced and controlled fundamentally, and the high-precision calibration of the heterodromous deflection light pipe is realized; on the other hand, the invention adopts the plane reflector with the surface shape precision RMS value not less than lambda/20 and the vertical one-dimensional guide rail with the straightness better than 0.05mm, thereby powerfully ensuring the stability of splicing the two mirrors.
2. The cost is low. The instruments and equipment adopted by the invention are mature and reliable, and the two reflectors are spliced by double mirror surfaces through the absolute north reference and the auto-collimation light path established by the high-precision gyrotheodolite, so that the same function of the traditional large-caliber plane mirror method is realized, but the cost is greatly reduced compared with that of the large-caliber plane mirror.
3. High efficiency. The method and the system for calibrating the parallelism of the double-mirror-surface spliced anisotropic refractive light tube can realize the adjustable range of the distance between two sliding translation stages of 300-1000 mm according to the lengths of different anisotropic refractive light tubes to be tested, and meet the calibration requirement of the parallelism of the light in and out of the anisotropic refractive light tube with the height difference of 300-1000 mm between the light in and out ports. After the height difference of the light outlet and the light inlet of the anisotropic deflection light pipe to be detected is determined and the double-mirror surface splicing is completed through the high-precision gyrotheodolite, the mass calibration of the light inlet and outlet parallelism of the anisotropic deflection light pipes of the same height difference type can be realized, only the anisotropic deflection light pipes need to be replaced at a fixed station in the calibration process, and the calibration efficiency is obviously improved.
Drawings
FIG. 1 is a schematic diagram of a dual-mirror surface splicing embodiment of the divergently-folded light pipe parallelism calibration system based on dual-mirror surface splicing of the present invention.
FIG. 2 is a schematic view of an embodiment of calibrating a to-be-measured anisotropic refractive light pipe by the anisotropic refractive light pipe parallelism calibration system based on double-mirror splicing according to the present invention.
The reference numbers are as follows:
1-vertical one-dimensional guide rail, 2-first sliding translation table, 3-second sliding translation table, 4-first plane reflector device, 5-second plane reflector device, 6-high-precision gyrotheodolite (position 1), 7-high-precision gyrotheodolite (position 2), 8-anisotropic refraction light pipe to be tested, and 9-high-precision gyrotheodolite (position 3).
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings.
The invention provides a system for calibrating the parallelism of a heterodromous folding light pipe based on double-mirror splicing, which comprises: the device comprises a vertical one-dimensional guide rail 1, a first sliding translation table 2, a second sliding translation table 3, a first plane reflector device 4, a second plane reflector device 5, a high-precision gyrotheodolite (position 1)6, a high-precision gyrotheodolite (position 2)7, a to-be-detected anisotropic refraction light pipe 8 and a high-precision gyrotheodolite (position 3) 9.
The length of the vertical one-dimensional guide rail 1 is 1200 mm-1300 mm, the two rails are arranged in parallel, the first sliding translation table 2 and the second sliding translation table 3 are in screw transmission on the vertical one-dimensional guide rail 1, the straightness of the guide rail is superior to 0.05mm, and the two ends of the guide rail are respectively provided with an upper mechanical limit and a lower mechanical limit.
The first sliding translation platform 2 is arranged above the vertical one-dimensional guide rail 1, can translate on the vertical one-dimensional guide rail 1 along the vertical direction and has a self-locking function, the effective stroke of the first sliding translation platform is 700mm from the mechanical limit of the upper end of the vertical one-dimensional guide rail 1 to the lower part, and the bearing capacity is not lower than 5 kg; the first plane mirror device 4 is arranged on the first sliding translation table 2, and the first plane mirror device 4 is provided with a mirror frame and an adjustable base; the reflecting mirror is arranged in the mirror frame, the reflecting mirror is made of K9 glass, the caliber ranges from phi 80mm to phi 100mm, the inner mirror surface is plated with a reflecting film, the visible reflectivity is more than 95%, and the surface shape precision RMS value is not lower than lambda/20; the adjustable base is provided with a position and pitching two-way fine adjustment mechanism, the fine adjustment range is-2 degrees, the adjustable base is provided with an installation hole position, and the adjustable base is fixedly connected with the first sliding translation table 2 through a screw.
The second sliding translation platform 3 is arranged below the vertical one-dimensional guide rail 1, can translate on the vertical one-dimensional guide rail 1 along the vertical direction and has a self-locking function, the effective stroke of the second sliding translation platform is 700mm from the mechanical limit of the lower end of the vertical one-dimensional guide rail 1, and the bearing capacity is not lower than 5 kg; the second plane mirror device 5 is arranged on the second sliding translation table 3, and the second plane mirror device 5 is provided with a mirror frame and an adjustable base; the reflecting mirror is arranged in the mirror frame, the reflecting mirror is made of K9 glass, the caliber ranges from phi 80mm to phi 100mm, the inner mirror surface is plated with a reflecting film, the visible reflectivity is more than 95%, and the surface shape precision RMS value is not lower than lambda/20; the adjustable base is provided with a position and pitching two-way fine adjustment mechanism, the fine adjustment range is-2 degrees, the adjustable base is provided with a mounting hole position, and the adjustable base is fixedly connected with the second sliding translation table 3 through a screw.
The adjustable distance between the first sliding translation stage and the second sliding translation stage is 300-1000 mm, and the calibration requirement of the light parallelism of the outgoing light and the incoming light of the anisotropic refractive light tube with the height difference of 300-1000 mm between the light outgoing port and the light incoming port can be met.
The high-precision gyrotheodolite 6, the high-precision gyrotheodolite 7 and the high-precision gyrotheodolite 9 are the same high-precision gyrotheodolite, the high-precision gyrotheodolite is a grade I theodolite in the field of first-class triangulation and precision engineering measurement, and has an auto-collimation function, the return survey precision of the high-precision gyrotheodolite is superior to 0.5 ', and the north seeking orientation precision is superior to 2.5'; the high-precision gyrotheodolite 6 is arranged at the position 1, and the central height of the high-precision gyrotheodolite is equal to the central height of a reflector of the first plane reflector device 4 in height; the high-precision gyrotheodolite 7 is arranged at the position 2, and the central height of the high-precision gyrotheodolite is equal to the central height of a reflector of the second plane reflector device 5 in height; when the anisotropic reflection light pipe 8 to be measured is measured, the height of the center of the light outlet of the anisotropic reflection light pipe 8 to be measured is equal to the height of the center of the reflector of the first plane reflector device 4, the height of the center of the light inlet is equal to the height of the center of the reflector of the second plane reflector device 5, the height of the high-precision gyrotheodolite 9 is located at the position of the outer normal of the reflector of the second plane reflector device 5 and is located in the light path between the second plane reflector device 5 and the light inlet of the anisotropic reflection light pipe 8 to be measured, and the height of the center of the high-precision gyrotheodolite 9 is equal to the height of the center of the light inlet of the anisotropic reflection light pipe 8 to be measured and is equal to the height of the center of the reflector of the second plane reflector device 5.
The invention also provides a method for calibrating the light-in and light-out parallelism of the anisotropic refractive light tube based on double-mirror splicing, which comprises the following steps:
first, a system is set up: a first sliding translation table 2 is arranged above the vertical one-dimensional guide rail 1, a second sliding translation table 3 is arranged below the vertical one-dimensional guide rail 1, and the first sliding translation table 2 and the second sliding translation table 3 slide in the vertical direction along the vertical one-dimensional guide rail 1; the first plane mirror device 4 is arranged on the first sliding translation table 2 and can adjust a pitch angle and an azimuth angle; the second plane mirror device 5 is provided on the second sliding translation stage 3, and can perform pitch angle adjustment and azimuth angle adjustment.
Secondly, completing double-mirror surface splicing: and adjusting the first sliding translation table 2 and the second sliding translation table 3 to make the distance between the heights of the centers of the reflectors of the first plane reflector device 4 and the second plane reflector device 5 consistent with the height difference between the light outlet and the light inlet of the to-be-detected anisotropic refractive light pipe 8.
The high-precision gyrotheodolite 6 is arranged at the position 1, the center height of the high-precision gyrotheodolite 6 is equal to the center height of a reflector of the first plane reflector device 4 in height, the high-precision gyrotheodolite 6 is leveled, the reflector of the first plane reflector device 4 is collimated and aimed by the high-precision gyrotheodolite 6, a self-alignment image of the high-precision gyrotheodolite 6 is observed, a pitching fine-tuning mechanism on an adjustable base of the first plane reflector device 4 is used for adjusting, the vertical angle of the self-alignment image is 0 +/-15 ", and the north direction place value L and the pitching value I of the reflector of the first plane reflector device 4 are recorded at the moment.
The high-precision gyrotheodolite 7 is arranged at the position 2, the central height of the high-precision gyrotheodolite 7 is equal to the central height of a reflector of the second plane reflector device 5 in height, the high-precision gyrotheodolite 7 is leveled, the north azimuth value and the pitching value of the high-precision gyrotheodolite 7 are respectively arranged in L and I, the position of the high-precision gyrotheodolite 7 is kept fixed, the reflector autocollimation of the second plane reflector device 5 is observed through the high-precision gyrotheodolite 7, the azimuth and pitching two-direction fine adjustment mechanism on the adjustable base of the second plane reflector device 5 is used for adjusting until the north azimuth value and the pitching value of the reflector autocollimation of the second plane reflector device 5 are respectively L and I, adjustment is stopped, and double-mirror splicing is completed.
And finally, calibrating the parallelism of the anisotropic refractive light tube: the method comprises the following steps that a to-be-detected anisotropic refraction light pipe 8 is vertically arranged on one side of a vertical one-dimensional guide rail 1, a light outlet of the to-be-detected anisotropic refraction light pipe 8 is arranged above a light inlet, the center height of the light outlet is equal to the center height of a reflector of a first plane reflector device 4 in height, and the center height of the light inlet is equal to the center height of a reflector of a second plane reflector device 5 in height.
Arranging a high-precision gyrotheodolite 9 at the position 3, leveling the high-precision gyrotheodolite 9 by setting the center height of the high-precision gyrotheodolite 9 to be equal to the center height of a light inlet of the anisotropic refraction light tube 8 to be detected, collimating and aiming a reflector of the second plane reflector device 5 by using the high-precision gyrotheodolite 9 and recording a square value L1And a pitch value I1。
The position of the high-precision gyrotheodolite 9 is not changed, the collimation part of the high-precision gyrotheodolite 9 is rotated, the telescope objective lens of the high-precision gyrotheodolite 9 is aligned to the light inlet of the to-be-detected anisotropic refraction light pipe 8, the high-precision gyrotheodolite 9 is used for collimating and collimating the reflector of the first plane reflector device 4 through the to-be-detected anisotropic refraction light pipe 8, and the azimuth value L is recorded2And a pitch value I2(ii) a According to equation 1: Δ L ═ L1-L2180 ° and equation 2: Δ I ═ I1+I2-2iaAnd calculating the azimuth error delta L and the pitching error delta I of the anisotropic refractive light tube 8 to be detected at an angle of-180 degrees, namely completing the calibration of the parallelism of the light entering and exiting the anisotropic refractive light tube. I in equation 2aIs single-time collimation zero difference of a high-precision gyrotheodolite.
For the same height difference type different-direction turning light tube, after one different-direction turning light tube is calibrated, another different-direction turning light tube is replaced at the same position, the high-precision gyrotheodolite is used for collimation and collimation again through the light inlet of the high-precision gyrotheodolite, and the azimuth value L is recorded2And a pitch value I2And calculating the azimuth error delta L and the pitching error delta I according to a formula 1 and a formula 2, thereby realizing the batch calibration of the light in-out parallelism of the different-direction deflecting light pipes of the same height difference type.
Claims (10)
1. A method for calibrating the parallelism of a heterodromous folding light pipe based on double-mirror splicing is characterized by comprising the following steps:
step 1. set up the system
A vertical one-dimensional guide rail (1) is arranged, a first sliding translation table (2) and a second sliding translation table (3) are arranged on the vertical one-dimensional guide rail (1), and the first sliding translation table (2) and the second sliding translation table (3) can slide along the vertical one-dimensional guide rail (1); arranging a first plane mirror device (4) on a first sliding translation table (2), arranging a second plane mirror device (5) on a second sliding translation table (3), and arranging azimuth and pitching two-way fine adjustment mechanisms on the first plane mirror device (4) and the second plane mirror device (5);
step 2. double mirror surface splicing
Step 2.1: adjusting the first sliding translation table (2) and the second sliding translation table (3) to enable the distance between the heights of the centers of the reflectors of the first planar reflector device (4) and the second planar reflector device (5) to be consistent with the height difference between the light outlet and the light inlet of the to-be-detected anisotropic refractive light pipe (8);
step 2.2: azimuth angles and pitch angles of the first plane mirror device (4) and the second plane mirror device (5) are respectively adjusted through the same high-precision gyrotheodolite, so that the north direction position value L and the pitch value I of the reflectors of the first plane mirror device (4) and the second plane mirror device (5) are the same, and double-mirror surface splicing is realized;
step 3, calibrating the parallelism of the anisotropic refractive light tube (8) to be tested
Step 3.1: placing the to-be-detected anisotropic refraction light pipe (8) at one side of the vertical one-dimensional guide rail (1), and ensuring that the height of the center of a light inlet of the to-be-detected anisotropic refraction light pipe (8) is equal to the height of the center of a reflector of the second plane reflector device (5), and the height of the center of a light outlet of the to-be-detected anisotropic refraction light pipe (8) is equal to the height of the center of a reflector of the first plane reflector device (4);
step 3.2: placing the high-precision gyrotheodolite used in the step 2 between the light inlet of the anisotropic refractive light tube (8) to be detected and the vertical one-dimensional guide rail (1)Meanwhile, the height of the center of the high-precision gyrotheodolite is equal to the height of the center of the light inlet of the anisotropic refraction light pipe (8) to be detected, and the height of the center of the high-precision gyrotheodolite is equal to the height of the center of the reflector of the second plane reflector device (5); leveling high-precision gyrotheodolite, collimating and aiming the reflector of the second plane reflector device (5) by using the high-precision gyrotheodolite and recording the azimuth value L1And a pitch value I1；
The position of the high-precision gyrotheodolite is unchanged, the collimation part is rotated to align the telescope objective of the high-precision gyrotheodolite with the light inlet of the to-be-detected anisotropic refraction light pipe (8), the high-precision gyrotheodolite is used for collimating and collimating the reflector of the first plane reflector device (4) through the to-be-detected anisotropic refraction light pipe (8) and recording the azimuth value L2And a pitch value I2；
According to equation 1: Δ L ═ L1-L2180 ° and equation 2: Δ I ═ I1+I2-2iaCalculating the azimuth error delta L and the pitch error delta I of the anisotropic refractive light tube (8) to be measured at 180 degrees, namely completing the parallelism calibration of the light entering and exiting of the refractive light tube (8) to be measured, wherein IaIs single-time collimation zero difference of a high-precision gyrotheodolite.
2. The method for calibrating the parallelism of the divergently folded light pipe based on the double-mirror splicing as claimed in claim 1, wherein the specific process of the step 2.2 is as follows:
1) selecting a reference plane mirror device: selecting any one of the first plane mirror device (4) and the second plane mirror device (5) as a reference plane mirror device, and the other one is a plane mirror device to be leveled;
2) measurement reference plane mirror device: adjusting the high-precision gyrotheodolite to enable the center height of the high-precision gyrotheodolite to be equal to the center height of a reflector of the reference plane reflector device, leveling the high-precision gyrotheodolite, collimating and aiming the reflector of the reference plane reflector device by using the high-precision gyrotheodolite, observing a self-alignment image of the high-precision gyrotheodolite, adjusting by using a pitch angle fine adjustment mechanism on the reference plane reflector device to enable the vertical angle of the self-alignment image to be 0 +/-15', and recording the north direction position value L and the pitch value I of the reflector of the reference plane reflector device at the moment;
3) adjusting the reflector device of the surface to be leveled: adjusting the high-precision gyrotheodolite in step 2), make its central altitude and wait to level the speculum central altitude of a surface speculum device equal height, level the high-precision gyrotheodolite, arrange L and I respectively in the north azimuth value and the every single move value of high-precision gyrotheodolite, keep high-precision gyrotheodolite rigidity, observe the speculum auto-alignment of waiting to level the surface speculum device through the high-precision gyrotheodolite, and use and wait to level the position on the surface speculum device and adjust to every single move two-way fine-tuning, the north azimuth value and the every single move value of the speculum auto-alignment of waiting to level the surface speculum device are L and I respectively, stop adjusting, accomplish the double mirror concatenation.
3. The method for calibrating the parallelism of the divergently folded light pipe based on the double-mirror splicing as claimed in claim 1 or 2, wherein: the high-precision gyrotheodolite has an auto-collimation function, the first return accuracy is better than 0.5 ', and the north-seeking orientation accuracy is better than 2.5'.
4. A calibration system for the parallelism of a double-mirror splicing based different-direction folded light pipe is applicable to any one of claims 1 to 3, and is characterized in that: the device comprises a double-mirror splicing device and a high-precision gyrotheodolite;
the double-mirror surface splicing device comprises a vertical one-dimensional guide rail (1), a first sliding translation table (2), a second sliding translation table (3), a first plane reflector device (4) and a second plane reflector device (5), wherein the first sliding translation table (2) and the second sliding translation table (3) are slidably mounted on the vertical guide rail of the vertical one-dimensional guide rail (1) and have a self-locking function; the first plane mirror device (4) is fixedly connected to the first sliding translation table (2), and the second plane mirror device (5) is fixedly connected to the second sliding translation table (3); the first plane mirror device (4) and the second plane mirror device (5) are both provided with a mirror frame and an adjustable base; the adjustable base is provided with a position and pitching two-way fine adjustment mechanism;
the high-precision gyrotheodolite can adjust the azimuth and pitching two-way fine adjustment mechanisms of the reflectors of the first plane reflector device (4) and the second plane reflector device (5) to enable the north direction value L and the pitching value I of the first plane reflector device (4) and the second plane reflector device (5) to be the same, and double-mirror surface splicing is completed; the high-precision gyrotheodolite is arranged between the vertical one-dimensional guide rail (1) and the anisotropic refraction light tube (8) to be detected when the anisotropic refraction light tube (8) to be detected is calibrated, the central height of the high-precision gyrotheodolite is equal to the central height of a light inlet of the anisotropic refraction light tube (8) to be detected and equal to the central height of a reflector of the second plane reflector device (5), and the high-precision gyrotheodolite measures the azimuth value L of the reflector of the second plane reflector device (5) at the same position1And a pitch value I1And measuring the orientation value L of the reflector of the first plane reflector device (4) through the anisotropic refractive light pipe (8) to be measured2And a pitch value I2。
5. The system according to claim 4, wherein the system comprises: the reflecting mirror is made of K9 glass, the caliber ranges from 80mm to 100mm, the inner mirror surface is plated with a reflecting film, the visible reflectivity is more than 95%, and the surface accuracy RMS value is not lower than lambda/20.
6. The system according to claim 4, wherein the system comprises: the fine adjustment range of the azimuth and pitching two-way fine adjustment mechanism is-2 degrees.
7. The system for calibrating the parallelism of the divergently folded light pipe based on the double-mirror splicing according to any one of claims 4 to 6, wherein: the vertical one-dimensional guide rail (1) is arranged in parallel by double rails, the first sliding translation table (2) and the second sliding translation table (3) are in screw transmission on the vertical one-dimensional guide rail (1), and the straightness of the guide rail of the vertical one-dimensional guide rail (1) is superior to 0.05 mm.
8. The system according to claim 7, wherein: the length of the vertical one-dimensional guide rail (1) is 1200-1300 mm, the two ends of the vertical one-dimensional guide rail are respectively provided with an upper end mechanical limit and a lower end mechanical limit, and the adjustable distance between the first sliding translation table (2) and the second sliding translation table (3) is 300-1000 mm.
9. The system for calibrating the parallelism of a folded light pipe based on double-mirror splicing according to claim 8, wherein: the first sliding translation platform (2) is arranged above the vertical one-dimensional guide rail (1), the effective stroke of the first sliding translation platform is 700mm from the upper end of the vertical one-dimensional guide rail (1) to the lower end of the first sliding translation platform through mechanical limiting, and the bearing capacity of the first sliding translation platform is not lower than 5 kg.
10. The system for calibrating the parallelism of a folded light pipe based on double mirror splicing according to claim 9, wherein: the second sliding translation platform (3) is arranged below the vertical one-dimensional guide rail (1), the effective stroke of the second sliding translation platform is 700mm from the mechanical limit of the lower end of the vertical one-dimensional guide rail (1), and the bearing capacity is not lower than 5 kg.
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5276501A (en) * | 1975-12-19 | 1977-06-28 | Kraftwerk Union Ag | Onceethrough boiler of twooflue structure |
| CN1387022A (en) * | 2002-06-06 | 2002-12-25 | 中国科学院长春光学精密机械与物理研究所 | Measurer for thickness of float polished liquid film |
| CN1490593A (en) * | 2002-10-15 | 2004-04-21 | 中国科学院长春光学精密机械与物理研 | Inspection of parallelism of light axle of bending optical pipe |
| CN101226049A (en) * | 2008-01-22 | 2008-07-23 | 长春理工大学 | Device for detecting parallelism of two route parallel beams |
| CN201163179Y (en) * | 2008-01-22 | 2008-12-10 | 长春理工大学 | Light path parallel detection instrument |
| CN102213842A (en) * | 2011-06-03 | 2011-10-12 | 中国兵器工业第二〇五研究所 | Optical axis debugging device of television observation tool with multiple field views |
| CN102927993A (en) * | 2012-10-08 | 2013-02-13 | 中国科学院西安光学精密机械研究所 | vertical transfer indoor optical reference calibration system |
| CN103968858A (en) * | 2014-04-30 | 2014-08-06 | 中国科学院长春光学精密机械与物理研究所 | Geometric calibration device for ultraviolet imager with extra large field-of-view |
| CN108828748A (en) * | 2018-05-31 | 2018-11-16 | 北京航天发射技术研究所 | A kind of optical path is turned back the reflecting mirror Method of Adjustment and system of device |
| CN210294662U (en) * | 2019-09-24 | 2020-04-10 | 西安佐威光电科技有限公司 | Large-caliber double-paraboloid reflection modular collimator |
-
2021
- 2021-05-12 CN CN202110517662.6A patent/CN113267146B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5276501A (en) * | 1975-12-19 | 1977-06-28 | Kraftwerk Union Ag | Onceethrough boiler of twooflue structure |
| CN1387022A (en) * | 2002-06-06 | 2002-12-25 | 中国科学院长春光学精密机械与物理研究所 | Measurer for thickness of float polished liquid film |
| CN1490593A (en) * | 2002-10-15 | 2004-04-21 | 中国科学院长春光学精密机械与物理研 | Inspection of parallelism of light axle of bending optical pipe |
| CN101226049A (en) * | 2008-01-22 | 2008-07-23 | 长春理工大学 | Device for detecting parallelism of two route parallel beams |
| CN201163179Y (en) * | 2008-01-22 | 2008-12-10 | 长春理工大学 | Light path parallel detection instrument |
| CN102213842A (en) * | 2011-06-03 | 2011-10-12 | 中国兵器工业第二〇五研究所 | Optical axis debugging device of television observation tool with multiple field views |
| CN102927993A (en) * | 2012-10-08 | 2013-02-13 | 中国科学院西安光学精密机械研究所 | vertical transfer indoor optical reference calibration system |
| CN103968858A (en) * | 2014-04-30 | 2014-08-06 | 中国科学院长春光学精密机械与物理研究所 | Geometric calibration device for ultraviolet imager with extra large field-of-view |
| CN108828748A (en) * | 2018-05-31 | 2018-11-16 | 北京航天发射技术研究所 | A kind of optical path is turned back the reflecting mirror Method of Adjustment and system of device |
| CN210294662U (en) * | 2019-09-24 | 2020-04-10 | 西安佐威光电科技有限公司 | Large-caliber double-paraboloid reflection modular collimator |
Non-Patent Citations (2)
| Title |
|---|
| 多棱镜分光系统的多光束光轴平行度校准;叶海水 等;《应用光学》;20121130;第33卷(第6期);第1082-1087页 * |
| 提高平行光管分划板装调精度新方法研究;何煦 等;《光学学报》;20140930;第34卷(第9期);第0912001-1-0912001-7页 * |
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