A method for assembling and adjusting a continuous zoom complex optical system

Abstract

The application discloses a kind of continuous zoom complex optical system alignment method, including the following steps: S1: the eccentricity, tilt detection of each lens in focusing group, zoom group, compensation group and rear fixed group, and complete lens correction in each mirror group component;S2: the corrected each mirror group component is loaded into the main lens barrel of continuous zoom optical system, and the air gap between each mirror group component is measured accurately, and the initial installation of continuous zoom optical system is completed;S3: the initial installation of continuous zoom optical system is completed and is placed in the wave aberration detection light path of interferometer and plane mirror group, the detection of optical system wave aberration in long, short focus two extreme positions is completed, and the aberration type is confirmed according to wave aberration detection result, so as to realize optical system aberration correction.The application can quantify the aberration type and change amount in alignment process, so that alignment personnel can carry out targeted alignment, and then the alignment efficiency and precision of continuous zoom optical system are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of optical systems, in particular to a method for assembling and adjusting a continuous zoom complex optical system. BACKGROUND

[0002] Continuous zoom complex optical systems have been widely used in the fields of aerospace, security monitoring, etc. A continuous zoom complex optical system is generally composed of four groups of elements, i.e. a focusing group, a zoom group, a compensation group and a rear fixed group. The focusing group converges the incident light; the zoom group and the compensation group rotate through cam curves to realize the linear reciprocating motion between the dynamic groups; and the rear fixed group converges the image on the detector, thereby completing the shooting of the target object from far to near and from large to small. Since such a system has a large number of optical lenses and a complex structure, how to quickly position the spatial attitude of the optical lenses during the assembly and adjustment of the zoom optical system is a major factor in improving the assembly and adjustment efficiency and accuracy.

[0003] At present, the traditional assembly and adjustment method of a continuous zoom complex optical system mainly includes the following steps: S1, pre-centering processing between the optical lenses and the lens barrel; S2, precise assembly and adjustment of the lenses in each group of elements; and S3, final image quality detection and correction of the system. The image quality detection and correction of the system mainly depends on the star point image state of the collimator and the experience of the assembly and adjustment personnel, which makes the traditional assembly and adjustment method have a long assembly and adjustment period and low efficiency.

[0004] A method for assembling and adjusting a continuous zoom optical system is disclosed in Chinese Patent Publication No. CN 111650711A, which discloses a method and steps for adjusting the image quality of each zoom element. However, this method has complicated steps and relies on the experience of the assembly and adjustment personnel during the image quality adjustment process. The detection results during the assembly and adjustment process cannot be quantified. Since the number of elements of the zoom optical system is large, the method for adjusting the image quality of each zoom element in the disclosed patent cannot effectively ensure the coaxial accuracy between the elements. In actual application, when the assembly and adjustment personnel lack experience in assembling and adjusting such optical systems, the assembly and adjustment period will be affected. SUMMARY

[0005] In view of the above deficiencies of the prior art, in order to enable assembly and adjustment personnel with less experience to efficiently assemble and adjust a continuous zoom complex optical system, the present application provides a method for assembling and adjusting a continuous zoom complex optical system, which has better coaxial accuracy between elements, quantifiable detection results, simpler operation and high debugging accuracy.

[0006] To achieve the above-mentioned application purposes, the technical solution adopted by the present application is as follows: a method for assembling and adjusting a continuous zoom complex optical system, comprising the following steps:

[0007] S1: Detecting the decentration and tilt of each lens of each lens group component using a center deviation detection system, each lens group component including a focusing group, a zoom group, a compensation group, and a rear fixed group, to complete lens correction in each lens group component;

[0008] The center deviation detection system includes a main lens barrel mounting the lens group component, a center deviation detector, a four-dimensional turntable, a lever micrometer, and a horizontal translation stage. The main lens barrel is fixed on the four-dimensional turntable, the lever micrometer is placed on the horizontal translation stage, and the horizontal translation stage and the four-dimensional turntable are placed on the center deviation detector. The center deviation detection system further includes a display connected to the center deviation detector;

[0009] S2: Assembling the corrected focusing group, zoom group, compensation group, and rear fixed group into the main lens barrel of the continuous zoom optical system in sequence according to the corresponding relationship, and measuring the air gap between the focusing group and the zoom group, the zoom group and the compensation group, and the compensation group and the rear fixed group, to complete the initial assembly of the continuous zoom optical system;

[0010] S3: Placing the initially assembled continuous zoom optical system in the wave aberration detection light path composed of an interferometer and a plane mirror, so that the interferometer, the continuous zoom optical system, and the plane mirror are coaxial. By rotating the zoom cam to the long and short focal field sizes, the wave aberration of the optical system at the long and short focal limit positions is detected, and the type of aberration is determined according to the wave aberration detection result, thereby realizing aberration correction of the optical system.

[0011] Further, step S1 further includes the following steps:

[0012] S11: Setting the theoretical decentration value x and the theoretical tilt value θ of the lens;

[0013] S12: Detecting the decentration and tilt of the lens using the center deviation detector and making a judgment;

[0014] When the actual measured decentration value Δx of the optical system lens is less than or equal to the theoretical decentration value x and the actual measured tilt value Δθ is less than or equal to the theoretical tilt value θ, the decentration and tilt of the lens in the component meet the accuracy requirements, and the lens correction in the lens group component is completed;

[0015] When at least one of the actual measured decentration value Δx and the actual measured tilt value Δθ does not meet the condition;

[0016] Otherwise, step S13 is executed to correct the lens in the lens group component;

[0017] S13: Establishing a reference coordinate system X-Y-Z based on the measurement of the center deviation detector according to the detection result of the center deviation detector;

[0018] S14: According to the reference coordinate system X-Y-Z and the detection result, the lens decentration adjustment position in the lens group element is determined, and the decentration correction of each lens in each lens group element is completed;

[0019] S15: By rotating the lens and the spacer, the tilt correction of each lens in the lens group element is completed;

[0020] S16: After the tilt correction of the lens is completed, return to step S12, and detect the center deviation of the lens group element again; stop step S16 until the tilt correction of the lens meets the requirements;

[0021] S17: Repeat steps S11-S16 to complete the decentration and tilt adjustment of the lenses in each lens group element in turn, and complete the lens correction in all lens group elements.

[0022] Further, step S3 further includes the following steps:

[0023] S31: Using the optical design software codev, first establish a continuous zoom optical system model with optical parameters based on the long focal small field position of the continuous zoom optical system, and the optical parameters of the continuous zoom optical system model include the radius, thickness and material of the lens, and the air gap between the lenses;

[0024] S32: According to the wave aberration detection result of the continuous zoom optical system at the long focal small field position, obtain the aberration types affecting the imaging quality of the optical system;

[0025] S33: Using the obtained aberration types, obtain the optical lens distribution affecting the change of spherical aberration, coma and astigmatism of the continuous zoom optical system, and complete the aberration simulation detection and correction at the long focal small field position by adjusting the corresponding misalignment;

[0026] S34: Repeat steps S31-S33, and establish a continuous zoom optical system model based on the short focal large field position of the continuous zoom optical system, to complete the aberration detection and correction method of the short focal large field.

[0027] The aberration physical correction of the continuous zoom optical system includes the following steps:

[0028] S331, place the main lens barrel in the detection light path of the center deviation detector, so that the mechanical center of the main lens barrel is coaxial with the detection light path; place the plane mirror on the four-dimensional turntable, and make the four-dimensional turntable deviate from the measurement light path by less than 0.5um through the center deviation measuring instrument and the lever micrometer; fix the main lens barrel on the four-dimensional turntable, and make the mechanical center of the main lens barrel and the light path of the center deviation measuring instrument radially and axially shake by less than the theoretical radial and axial shaking amount s through the lever micrometer;

[0029] S332, the focusing group, the zoom group, the compensation group and the rear fixed group are mounted on the main lens barrel respectively, wave aberration detection is carried out by using a center deviation detector and a display, aberration detection and correction under long and short focal fields are carried out, spatial posture correction of sensitive optical elements affecting the spherical aberration, coma and astigmatism of the continuous zoom optical system is carried out, and spatial posture correction of sensitive optical elements of the focusing group, the zoom group, the compensation group and the rear fixed group is carried out; the system wave aberration theoretical value of the continuous zoom optical system is set as w0, and when the actual measurement wave aberration detection result w is better than the theoretical wave aberration detection result w0 through repeated iteration adjustment, the precise assembly and adjustment of the continuous zoom optical system is completed.

[0030] Further, the theoretical eccentricity value x is 0.01mm, the theoretical tilt value theta is 40'', the theoretical radial and axial shaking amount Delta s is 1um, and the theoretical wave aberration detection result w0 is 0.07l.

[0031] Further, the main lens barrel comprises a lens barrel body for mounting lens group components, a through hole for mounting the lens group components is arranged at the top of the lens barrel body, a plurality of optical axis guide rods matched with the lens group components are arranged in the lens barrel body, the optical axis guide rods are parallel to the axis of the lens barrel body, and the optical axis guide rods are fixed on the inner wall of the lens barrel body through a plurality of baffles.

[0032] Further, a fixed edge is arranged at the periphery of the bottom of the lens barrel body, and the lens barrel body is fixed on the four-dimensional turntable through fastening plates and screws.

[0033] The present application has the following advantages:

[0034] In the conventional assembly and adjustment method, the control of the aberration of the optical system in the assembly process usually adopts a collimator, and the judgment is made according to the experience of the assembly personnel, so the types of the aberration cannot be quantified, thereby affecting the efficiency of the optical system assembly and adjustment. The assembly and adjustment method of the present application firstly detects the characteristics of the wave aberration of the optical system after initial assembly, then completes the modeling of the zoom optical system by using optical design software, and carries out simulation analysis according to the wave aberration detection result to obtain the sensitive optical element distribution, and further determine the factors affecting the aberration of the optical system; the misalignment amount of the sensitive optical element is analyzed by using the optical design software, the simulation correction is completed, and the physical correction is further completed according to the simulation result, so as to realize the assembly and adjustment of the continuous zoom optical system.

[0035] The assembly and adjustment method of the continuous zoom complex optical system comprises seven steps in sequence, i.e. assembly of each component lens of the continuous zoom optical system, center deviation detection and adjustment of each component, initial assembly of the optical system, initial detection of the optical system, wave aberration detection of the optical system, aberration correction of the optical system, and re-detection of the wave aberration of the optical system. After each step is accurately completed, the next step can be continued. The assembly of each component lens of the continuous zoom optical system is the basis of the optical system assembly and adjustment.

[0036] The application realizes the quantitative control of eccentricity / tilt of each component in the assembling process, and the control of the relative position between each component. The wave aberration detection technology is used to assemble and adjust the optical system, and the distribution of the system aberration is quantified. The optical software simulation is used to realize the quantification and adjustment of the optical system misalignment. The problem of low assembling efficiency caused by the lack of experience of the assembling personnel is overcome.

[0037] The interferometer measurement system wave aberration used in the method can be applied to continuous zoom optical systems with different structures. The method can quantize the types of system aberration in real time during the image quality detection of the continuous zoom optical system.

[0038] The method can effectively locate the sensitive optical elements affecting the optical system aberration.

[0039] The method can complete the spatial attitude correction of the sensitive optical elements of the system aberration through computer-aided analysis.

[0040] The aberration adjustment tool used in the method can ensure the coaxial accuracy between each lens group component of the continuous zoom system.

[0041] The method can improve the assembling efficiency and precision of the continuous zoom optical system. BRIEF DESCRIPTION OF DRAWINGS

[0042] Figure 1 The figure is a flow chart of the aberration correction of the continuous zoom optical system of the application.

[0043] Figure 2 The figure is a center deviation detection system of the single component of the continuous zoom optical system of the application.

[0044] The main component symbols in the figure are as follows:

[0045] 1, lens group component; 2, main lens barrel; 3, lever dial gauge; 4, horizontal translation table; 5, center deviation detector; 6, four-dimensional turntable; 7, display; 8, guide rail; 9, optical axis guide rod; 10, blocking piece; 11, fastening pressure piece. DETAILED DESCRIPTION

[0046] The specific embodiments of the application are described below to facilitate the understanding of the application by those skilled in the art, but it should be clear that the application is not limited to the scope of the specific embodiments. It is obvious to those skilled in the art that all the applications and inventions utilizing the concept of the application are within the scope of the application, as long as the changes are within the spirit and scope of the application defined and determined by the appended claims.

[0047] A continuous zoom type complex optical system assembling method, such as Figure 1As shown, comprising the following steps:

[0048] S1: detecting the decentration and tilt of each lens of each lens group component using a center deviation detection system, each lens group component including a focusing group, a zoom group, a compensation group, and a rear fixed group, and completing lens correction in each lens group component;

[0049] The center deviation detection system includes a main lens barrel 2 mounting the lens group component 1, a center deviation detector 5, a four-dimensional turntable 6, a lever micrometer 3, and a horizontal translation table 4. The main lens barrel 2 is fixed on the four-dimensional turntable 6, the lever micrometer 3 is placed on the horizontal translation table 4, and the horizontal translation table 4 and the four-dimensional turntable 6 are placed on the center deviation detector 5. It also includes a display 7 connected to the center deviation detector 5; as Figure 2 shown;

[0050] In this embodiment, step S1 further includes the following steps:

[0051] S11: The theoretical decentration value x of the lens is preferably 0.01 mm, and the theoretical tilt value θ is preferably 40";

[0052] S12: Detecting the decentration and tilt of the lens using the center deviation detector 5 and making a judgment;

[0053] When the actual measured decentration value Δx of the optical system lens is ≤0.01 mm and the actual measured tilt value Δθ is ≤40", the decentration and tilt of the lens in the component meet the accuracy requirements, and the lens correction in the lens group component is completed;

[0054] When at least one of the actual measured decentration value Δx of the optical system lens is ≤0.01 mm and the actual measured tilt value Δθ is ≤40" does not meet the condition;

[0055] Otherwise, step S13 is performed to correct the lens in the lens group component;

[0056] S13: According to the detection results of the center deviation detector, a reference coordinate system X-Y-Z is established with the center deviation detector measuring the optical axis as the reference;

[0057] S14: According to the reference coordinate system X-Y-Z and the detection results, the lens decentration adjustment direction in the lens group component is determined, and the decentration correction of each lens in each lens group component is completed;

[0058] S15: By rotating the lens and regrinding the spacer, the tilt correction of each lens in the lens group component is completed;

[0059] S16: After completing the tilt correction of the lens, return to step S12 and detect the center deviation of the lens group component again. Until the tilt correction of the lens meets the requirements, stop step S16.

[0060] S17: repeating steps S11-S16, completing the eccentricity and tilt adjustment of the lenses in each lens group element in turn, and completing the correction of the lenses in all lens group elements.

[0061] S2: loading the corrected focusing group, zoom group, compensation group and rear fixed group into the main lens barrel of the continuous zoom optical system in turn according to the corresponding relationship, and measuring the air gap between the focusing group and the zoom group, the zoom group and the compensation group, and the compensation group and the rear fixed group, to complete the initial assembly of the continuous zoom optical system.

[0062] S3: placing the initially assembled continuous zoom optical system in the wave aberration detection light path composed of an interferometer and a plane mirror, so that the interferometer, the continuous zoom optical system and the plane mirror are coaxial; by rotating the zoom cam to the long and short focal field sizes, the wave aberration of the optical system at the long and short focal limit positions is detected, and the type of aberration is determined according to the wave aberration detection result, so as to realize the aberration correction of the optical system.

[0063] S31: using the optical design software codev, first taking the long focal small field position of the continuous zoom optical system as the reference, a continuous zoom optical system model with optical parameters is established, the optical parameters of the continuous zoom optical system model include the radius, thickness and material of the lenses, and the air gap between the lenses;

[0064] S32: according to the wave aberration detection result when the continuous zoom optical system is at the long focal small field position, the type of aberration affecting the imaging quality of the optical system is obtained;

[0065] S33: using the obtained type of aberration, the optical lens distribution affecting the change of spherical aberration, coma and astigmatism of the continuous zoom optical system is obtained, and by adjusting the corresponding misadjustment, the aberration simulation detection and correction at the long focal small field position are completed;

[0066] S34: repeating steps S31-S33, and taking the short focal large field position of the continuous zoom optical system as the reference, a continuous zoom optical system model is established, and the aberration detection and correction method at the short focal large field position is completed.

[0067] The physical correction of the aberration of the continuous zoom optical system includes the following steps:

[0068] S331, placing the main lens barrel 2 in the detection light path of the center deviation detector 5, so that the mechanical center of the main lens barrel 2 is coaxial with the detection light path;

[0069] The plane mirror is placed on the four-dimensional turntable 6, and the four-dimensional turntable 6 is deviated from the optical axis of the measuring light path by less than 0.5 um through the center deviation measuring instrument 5 and the lever micrometer 3; the main mirror barrel is fixed on the four-dimensional turntable 6, and the mechanical center of the main mirror barrel 2 and the optical axis of the center deviation measuring instrument 5 are radially and axially shaken by an amount Δs which is less than a theoretical radial and axial shaking amount s; the theoretical radial and axial shaking amount Δs of the mechanical center of the main mirror barrel 2 and the optical axis of the center deviation measuring instrument 5 is preferably 1 um;

[0070] S332, the focusing group, the zoom group, the compensation group and the rear fixed group are respectively installed on the main mirror barrel, wave aberration detection is performed by using the center deviation detector 5 and the display 7, aberration detection and correction under long and short focal fields are performed, spatial posture correction of sensitive optical elements affecting the spherical aberration, coma and astigmatism of the continuous zoom optical system is performed, and spatial posture correction of sensitive optical elements of the focusing group, the zoom group, the compensation group and the rear fixed group is performed; the theoretical value of the system wave aberration of the continuous zoom optical system is set as w0, and the actual measurement wave aberration detection result w is better than the theoretical wave aberration detection result w0 through repeated iteration adjustment, so that the precise assembly and adjustment of the continuous zoom optical system is completed. The theoretical wave aberration detection result w0 is preferably 0.07λ.

[0071] In the embodiment, the main mirror barrel 2 includes a mirror barrel body on which the mirror group component 1 is installed, a through hole for installing the mirror group component 1 is arranged at the top of the mirror barrel body, a plurality of optical axis guide rods 9 matched with the mirror group component 1 are arranged in the inside of the mirror barrel body, the optical axis guide rods 9 are parallel to the axis of the mirror barrel body, and the optical axis guide rods 9 are fixed on the inner wall of the mirror barrel body through a plurality of baffles 10.

[0072] In the embodiment, a fixed edge is arranged at the periphery of the bottom of the mirror barrel body, and the mirror barrel body is fixed on the four-dimensional turntable 6 through the fastening pressing sheet 11 and the screw.

[0073] The physical correction of the spherical aberration, the coma and the astigmatism of the continuous zoom optical system also includes the following specific steps:

[0074] 1. Build a mirror group component center deviation detection system: connect the display 7 with the center deviation detector 5, adjust the four-dimensional turntable 6 so that the rotation center of the four-dimensional turntable 6 coincides with the measuring optical axis of the center deviation detector 5; connect the fastening pressing sheet 11 with the four-dimensional turntable 6 through M6×10 screws; place the main mirror barrel 2 in the detection light path of the center deviation detector 5 and the four-dimensional turntable 6, and connect the main mirror barrel 2 with the fastening pressing sheet 11 and the four-dimensional turntable 6 through M6×10 screws; fix the lever micrometer 3 with the horizontal translation table 4, and realize horizontal movement through the guide rail 8;

[0075] 2. The mirror group component 1 is assembled with the main mirror tube 2 through the optical axis guide rod 9, and is installed in place through the stopper 10; the connection between the main mirror tube 2, the four-dimensional turntable 6 and the fastening pressure plate 11 is completed using M6x10 screws. After the light path detection is completed, the center deviation detector 5 can be used to complete the measurement and correction of the eccentricity and tilt of each lens in the mirror group component 1.

[0076] 3. The lever micrometer 3 is moved to a position suitable for the main mirror tube 2 using the guide rail 8, and the radial and axial shaking amount of the main mirror tube 2 is better than Δs by rotating the four-dimensional turntable 6.

[0077] 4. The above steps are repeated iteratively, and when the wave aberration detection result w is better than the theoretical value w0 of the system wave aberration, the precision assembly of the continuous zoom optical system is completed.

[0078] 5. The same method is used to complete the aberration correction of the short-focus large field of view.

Claims

1. A method of assembling a continuously variable zoom complex optical system, characterized by, It comprises the following steps: S1: detecting the eccentricity and tilt of each lens of each mirror group component using a center deviation detection system, each mirror group component comprising a focusing group, a zoom group, a compensation group and a rear fixed group, and completing the lens correction in each mirror group component; The center deviation detection system comprises a main lens barrel (2) for mounting the mirror group component (1), a center deviation detector (5), a four-dimensional turntable (6), a lever micrometer (3), and a horizontal translation table (4), the main lens barrel (2) is fixed on the four-dimensional turntable (6), the lever micrometer (3) is placed on the horizontal translation table (4), the horizontal translation table (4) and the four-dimensional turntable (6) are placed on the center deviation detector (5), and the center deviation detector (5) is connected with a display (7); S2: sequentially loading the corrected focusing group, zoom group, compensation group and rear fixed group into the main lens barrel of the continuous zoom optical system according to the corresponding relationship, measuring the air gap between the focusing group and the zoom group, the zoom group and the compensation group, and the compensation group and the rear fixed group, and completing the initial installation of the continuous zoom optical system; S3: placing the initially installed continuous zoom optical system in an optical path composed of an interferometer and a plane mirror, coaxially arranging the interferometer, the continuous zoom optical system and the plane mirror, rotating the zoom cam to the long and short focal field sizes, detecting the wave aberration of the optical system at the long and short focal limit positions, and confirming the type of aberration according to the wave aberration detection result, so as to realize the aberration correction of the optical system; Step S1 comprises the following steps: S11: setting a theoretical eccentricity value x and a theoretical tilt value θ of the lens; S12: detecting the eccentricity and tilt of the lens using the center deviation detector (5) and making a judgment; When the actual measured eccentricity value Δx of the optical system lens is less than or equal to the theoretical eccentricity value x, and the actual measured tilt value Δθ is less than or equal to the theoretical tilt value θ, the eccentricity and tilt of the lens in the component meet the accuracy requirements, and the lens correction in the mirror group component is completed; Otherwise, step S13 is executed to correct the lens in the mirror group component; S13: establishing a reference coordinate system X-Y-Z based on the optical axis measured by the center deviation detector according to the detection result of the center deviation detector; S14: determining the eccentricity adjustment direction of the lens in the mirror group component according to the reference coordinate system X-Y-Z and the detection result, and completing the eccentricity correction of each lens in each mirror group component; S15: completing the tilt correction of each lens in the mirror group component by rotating the lens and regrinding the spacer ring; S16: after completing the tilt correction of the lens, returning to step S12 to detect the center deviation of the mirror group component again; until the tilt correction of the lens meets the requirements, step S16 is stopped; S17: repeating steps S11-S16 to complete the eccentricity and tilt adjustment of the lens in each mirror group component, and completing the lens correction in all mirror group components; Step S3 comprises the following steps: S31: using optical design software codev, first taking the long-focus small field position of the continuous zoom optical system as the benchmark, a continuous zoom optical system model with optical parameters is established, the optical parameters of the continuous zoom optical system model include the radius, thickness and material of the lens, and the air gap between each lens; S32: according to the wave aberration detection result of the continuous zoom optical system in the long-focus small field position, the aberration types affecting the imaging quality of the optical system are obtained; S33: using the obtained aberration types, the optical lens distribution affecting the change of spherical aberration, coma and astigmatism of the continuous zoom optical system is obtained, and by adjusting the corresponding misadjustment, the aberration simulation detection and correction in the long-focus small field position are completed; S34: repeating steps S31-S33, and taking the short-focus large field position of the continuous zoom optical system as the benchmark, a continuous zoom optical system model with optical parameters is established, and the aberration detection and correction in the short-focus large field position are completed; The aberration physical correction method of the continuous zoom optical system comprises the following steps: S331, the main lens barrel (2) is placed in the detection light path of the center deviation detector (5), the mechanical center of the main lens barrel (2) is coaxial with the detection light path, the plane mirror is placed on the four-dimensional turntable (6), the four-dimensional turntable (6) is deviated from the measuring light path optical axis by less than 0.5um through the center deviation detector (5) and the lever micrometer (3), the main lens barrel is fixed on the four-dimensional turntable (6), and the mechanical center of the main lens barrel (2) is radially and axially shaken by an amount Δs which is less than a theoretical radial and axial shaking amount s through the lever micrometer (3); S332, the focusing group, zoom group, compensation group and rear fixed group are respectively installed on the main lens barrel, wave aberration detection is carried out by using the center deviation detector (5) and the display (7), aberration detection and correction in long and short focal field are carried out, spatial attitude correction of sensitive optical elements affecting spherical aberration, coma and astigmatism of the continuous zoom optical system is carried out, spatial attitude correction of sensitive optical elements of the focusing group, zoom group, compensation group and rear fixed group is carried out; the system wave aberration theoretical value of the continuous zoom optical system is set as w0, and the actual measurement wave aberration detection result w is better than the theoretical wave aberration detection result w0 through repeated iteration adjustment, so that the precise assembly of the continuous zoom optical system is completed. The theoretical eccentricity value x is 0.01mm, the theoretical inclination value θ is 40", the theoretical radial and axial shaking amount Δs is 1um, and the theoretical wave aberration detection result w0 is 0.07λ.

2. The method of claim 1, wherein The main lens barrel (2) comprises a lens barrel body for mounting the lens group element (1), a through hole for mounting the lens group element (1) is arranged at the top of the lens barrel body, a plurality of optical axis guide rods (9) matched with the lens group element (1) are arranged in the lens barrel body, the optical axis guide rods (9) are parallel to the axis of the lens barrel body, and the optical axis guide rods (9) are fixed on the inner wall of the lens barrel body through a plurality of baffles (10).

3. The method of claim 2, wherein, The bottom periphery of the lens barrel body is provided with a fixed edge, and the lens barrel body is fixed on the four-dimensional turntable (6) through a fastening pressing sheet (11) and a screw.

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