CN111650711B - Continuous zooming system adjusting method - Google Patents
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- 238000000034 method Methods 0.000 title claims abstract description 62
- 238000003384 imaging method Methods 0.000 claims abstract description 53
- 238000001514 detection method Methods 0.000 claims description 13
- 230000003287 optical effect Effects 0.000 claims description 11
- 210000001503 joint Anatomy 0.000 claims description 9
- 238000004458 analytical method Methods 0.000 claims description 5
- 238000009432 framing Methods 0.000 claims description 5
- 230000035515 penetration Effects 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 2
- 238000007796 conventional method Methods 0.000 abstract 1
- 238000009826 distribution Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 3
- 230000004075 alteration Effects 0.000 description 2
- 238000012790 confirmation Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 206010010071 Coma Diseases 0.000 description 1
- 201000009310 astigmatism Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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- 238000012544 monitoring process Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
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- 238000004080 punching Methods 0.000 description 1
- 210000001747 pupil Anatomy 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/021—Mountings, adjusting means, or light-tight connections, for optical elements for lenses for more than one lens
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
- G01M11/02—Testing optical properties
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/62—Optical apparatus specially adapted for adjusting optical elements during the assembly of optical systems
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B43/00—Testing correct operation of photographic apparatus or parts thereof
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Abstract
The invention belongs to a method for assembling and adjusting a zoom lens, and provides a method for assembling and adjusting a continuous zoom lens, which aims to solve the technical problems that the assembling and adjusting efficiency of the zoom lens is low because the method for determining the position of the focal plane of the zoom lens is complicated and the imaging quality cannot be controlled in the middle process of assembling in the conventional method for assembling the zoom lens, the operation is complicated, and an image detector is needed.
Description
Technical Field
The invention relates to a zoom system adjusting method, in particular to a continuous zoom system adjusting method.
Background
The application of the zoom lens has been in history for decades, and with the development of modern society and the progress of science and technology, the continuous zoom optical system has been widely applied to various fields, such as security protection, monitoring, skynet, traffic, safety production, forest fire prevention and the like. The optical path of the zoom lens generally consists of a front fixed group, a zoom group, a compensation group and a rear fixed group. When the whole lens is assembled, the whole lens has a moving group, such as a zoom group and a compensation group, and also comprises a fixed group, such as a front fixed group and a rear fixed group, and the assembly is complex, so that the quick and high-quality assembly and adjustment of the zoom lens are always important factors for restricting the application of the zoom lens.
The conventional zoom lens assembly mainly relates to the following aspects: 1. centering the lens; 2. the lens assembly in each group of components comprises a fixed group and a movable group; 3. assembling the zoom lens; 4. determining the position of a focal plane; 5. detecting the imaging quality of the zoom lens; 6. image surface butt joint and punching; 7. zoom cam curve position calibration, etc.
The traditional zoom lens assembling and adjusting method is low in assembling and adjusting efficiency, the imaging quality of the zoom lens cannot be controlled in the middle process, and the method for determining the focal plane position of the zoom lens is complex and can be completed by combining with a detector. In addition, the imaging quality of the zoom lens can only be detected after the lens is assembled, and cannot be controlled in an assembly intermediate link, so that the problem positioning is quite difficult if the imaging quality is poor after the lens is assembled.
The main reason that the traditional zoom lens adjusting method is low in adjusting efficiency is that: 1. the method for determining the focal plane position of the zoom lens is complicated; 2. the imaging quality of the zoom lens cannot be monitored and the problem can not be positioned in the middle process, the assembled lens needs to be repeatedly disassembled and assembled during positioning, the operation process is complicated and time-consuming, and the optical or structural surface is very easy to scratch.
Chinese patent publication No. CN 106773103a discloses a method for quickly determining the focal plane position of a zoom lens, which discloses a process and steps for quickly determining the focal plane, but the method is complicated, the focal plane position needs to be determined by combining the definition of an object image observed by an image detector, and during actual operation, the front and rear positions of the focal plane of the detector are repeatedly adjusted, except that the thickness of a flange spacer ring of the detector needs to be continuously trimmed, the operation is inconvenient, an electronic imaging component must have imaging conditions during lens assembly, and if the electronic component does not have the conditions, the assembly of the zoom lens is directly affected.
Disclosure of Invention
The invention mainly aims to solve the technical problems that the assembly efficiency of a zoom lens is low due to the fact that the existing zoom lens assembly method is complex in zoom lens focal plane position determination method and imaging quality cannot be controlled in the middle of assembly, and the disclosed method for quickly determining the focal plane is complex in operation and needs an image detector, and provides a continuous zoom system assembly method.
In order to achieve the purpose, the invention provides the following technical scheme:
a method for adjusting a zoom lens system, comprising the steps of:
s1, completing the assembly of lenses in each zoom component in the zoom lens;
s2, adjusting imaging quality of each zoom component
Sequentially placing each zoom component between a light path of a star point detector and an imaging component of the star point detector, wherein the zoom component, the light path of the star point detector and the imaging component of the star point detector are coaxially arranged, observing whether energy peak values of before-focus, focus surface and after-focus star point images of image surfaces of each zoom component are all positioned at a geometric center, if so, continuing to execute the step S3, otherwise, analyzing and confirming a lens which is most sensitive to assembly tolerance in the zoom component, and adjusting assembly parameters until the energy peak values of the before-focus, focus surface and after-focus star point images of the zoom component are all positioned at the geometric center;
s3, assembling all the zoom components to complete the assembly of the zoom lens;
s4, determining focusing zero and zoom lens image surface position
S4.1, placing a zoom lens between a collimator and a reading microscope, wherein the zoom lens, the collimator and the reading microscope are coaxially arranged, placing a discrimination plate at the focal plane position of the collimator, adjusting the position of the reading microscope, and observing through the reading microscope until the discrimination imaging definition of the collimator formed by the short-focus position of the zoom lens meets the preset requirement;
s4.2, keeping the position of the reading microscope fixed, and adjusting a zoom cam of the zoom lens to enable the zoom lens to be in a long-focus position;
s4.3, observing a collimator tube identification rate image formed by the telephoto position of the zoom lens through a reading microscope, and if the imaging definition meets the preset requirement, continuing to execute the step S4.4; otherwise, focusing by using a focusing group of the zoom lens until the imaging definition meets the preset requirement;
s4.4, marking the position of the focusing group as a focusing zero position when the imaging definition in the step S4.3 meets the preset requirement, and marking;
s4.5, adjusting the zoom lens to a short-focus position, observing the collimator tube identification rate image formed by the short-focus position of the zoom lens through the reading microscope again, and if the imaging definition meets the preset requirement, continuing to execute the step S4.6; otherwise, adjusting the position of the microscope until the imaging definition meets the preset requirement, and repeating the steps from S4.2 to S4.4;
s4.6, marking the focusing zero position marked at the last time as a final focusing zero position, and keeping the focusing group at the final focusing zero position, wherein the short-focus image surface of the zoom lens is the image surface position of the whole zoom lens;
s5, completing detector image surface butt joint and zoom lens feedthrough
Adjusting the front and back positions of a detector of the zoom lens and the zoom lens, simultaneously keeping the short-focus imaging definition of the zoom lens in accordance with the preset requirement, completing the butt joint of the image surface of the zoom lens and the detector, and further completing the center penetration of the zoom lens;
and S6, calibrating the curve position of the zoom cam, and completing the adjustment of the zoom system.
Further, after the step S4 and before the step S5, the method further includes a step S4-5 of zoom lens image quality detection;
keeping the focusing group at a final focusing zero position, detecting the imaging effect of each focal length position in the whole zooming process of the zoom lens, and if the imaging definition meets the preset requirement, continuing to execute the step S5; otherwise, the positional relationship between the zoom components is adjusted, and step S3 and step S4 are repeated.
Further, in step S2, the adjusting the assembly parameter is specifically to perform at least one of adjustment of rotating the lens, compensating the interval, adjusting the center offset, adjusting the lens tilt, and re-centering the lens with the most sensitive assembly tolerance.
Further, in step S2, the observing whether the energy peak values of the pre-focus star point image, the pre-focus star point image and the post-focus star point image of each zoom component image plane are all located at the geometric center is specifically performed through the pre-focus point spread function, the post-focus point spread function and the post-focus point spread function of each zoom component image plane.
Further, in step S2, the analysis confirms the most sensitive lens to the assembly tolerance in the zoom component, specifically, the analysis confirms through the optical design software.
Further, in step S4, the numerical aperture of the reading microscope is larger than the maximum numerical aperture of the zoom lens.
Further, step S1 is preceded by completing framing and centering of the lenses in the zoom components of the zoom system.
Compared with the prior art, the invention has the beneficial effects that:
1. the method for assembling and adjusting the continuous zooming system solves the technical problems that the imaging quality of the zoom lens cannot be detected and controlled in the middle process, and the operation is complicated, the assembly efficiency is low and the like when the focusing zero position and the focal plane position of the lens are determined. In the process, the star point detector is used for adjusting the imaging quality of each zoom component, process detection and control are carried out, and good imaging quality of the zoom lens after final assembly is ensured. And a light path is established for the zoom lens by utilizing the reading microscope and the collimator, the focusing zero position and the image surface position of the zoom lens are determined, the position of the focusing group and the image surface position uniquely corresponding to the focusing group can be quickly found without the participation of a detector component, and then the complete assembly and adjustment of the zoom system are continuously completed.
On one hand, the assembling and adjusting method provided by the invention overcomes the defects that the traditional assembling and adjusting method cannot carry out process detection and control on the imaging quality of the zoom lens in the middle link of assembly, so that the problem of difficult positioning and the need of repeatedly assembling and disassembling the zoom lens after the subsequent assembly is finished; on the other hand, the problem that the traditional focal plane position determination operation is complicated is also solved, the gasket is not required to be repeatedly trimmed and cut, the detector assembly is not required to participate, the zero position and the focal plane position of the focusing group can be determined, and the operation is very convenient and fast.
The adjusting method provided by the invention is essentially based on the quality control of the link of the assembling process of the enhanced zoom lens, simplifies the determining process of the focusing zero position and the focal plane, and avoids the repeated disassembly and assembly of the lens assembly without the purpose. The final imaging quality of the zoom lens is guaranteed, the assembling time is saved, the assembling efficiency of the zoom lens is improved, and the method has the advantages of being simple to operate, efficient, practical and the like.
2. The adjusting method also comprises the step of detecting the image quality of the zoom lens after the focusing zero position and the image surface position of the zoom lens are determined, so that the adjusting method is more rigorous and complete, and the confirmation of each link in the adjusting process is further ensured.
3. The analysis and confirmation of the lens with the most sensitive assembly tolerance are realized through optical design software, so that the result is more accurate and more convenient, and the error probability is reduced.
Drawings
FIG. 1 is a schematic flow chart illustrating an exemplary setup method of a zoom lens system according to the present invention;
FIG. 2 is a schematic diagram of the detection and adjustment of the imaging quality of the zoom components in the embodiment of the present invention;
FIG. 3 is a schematic diagram illustrating a principle of determining a focusing zero position and an image surface position of a zoom lens according to an embodiment of the present invention.
The system comprises a 1-star point detector light path, a 2-star point detector imaging component, a 3-zoom component, a 4-star point detector computer, a 5-collimator, a 6-collimator target, a 7-zoom lens, an 8-reading microscope, an 801-microscope objective, an 802-microscope eyepiece, a 9-manual observation point, a 10-star point detector and an 11-auxiliary adjusting computer.
Detailed Description
The technical solution of the present invention will be clearly and completely described below with reference to the embodiments of the present invention and the accompanying drawings, and it is obvious that the described embodiments do not limit the present invention.
As shown in figure 1, the invention provides a method for assembling and adjusting a continuous zoom lens, which sequentially comprises the steps of framing and centering lenses in zoom components, assembling lenses in each zoom component of the zoom lens, and eight processes of fixed group and moving group, detection and adjustment of imaging quality of each zoom component, general assembly of the zoom lens, determination of focusing zero position and zoom lens image surface position, detection of zoom lens image quality, image surface butt joint of a detector, center penetration of the zoom lens and calibration of zoom cam curve position, wherein each process is sequentially finished, and the next process is sequentially carried out after the requirements are met. Wherein, the framing and centering of the lens in the zoom component are prepared in the early stage.
The imaging quality detection and adjustment of each zoom component are finished by a star point detector;
the star point detector is mainly used for detecting the imaging quality of each zoom component 3 and comprises a fixed component and a moving component; the star point detector mainly detects the point spread function of each zoom component 3, observes the shape and energy distribution of the point spread function of each zoom component 3, and identifies the possible asymmetric aberrations of astigmatism, coma aberration and the like of each component. The star point detector can adopt an instrument with point spread function measurement, such as an optical transfer function measuring instrument, a central deviation measuring instrument and the like. In one embodiment and application of the invention, the star point detector is selected to be a commercial central deviation measuring instrument or MTF measuring instrument, which is provided with an additional mirror and related software for measuring MTF and point spread function of the positive lens group or the negative lens group.
The auxiliary adjusting computer 11 is provided with optical design software CODEC or ZEMAX and an optical lens design file, and can be used for analyzing the assembly tolerance of the zoom lens 7 and determining lenses sensitive to the assembly tolerance in each zoom component 3 of the zoom lens in the assembly link.
The imaging quality detection and adjustment method of each zoom component comprises the following specific steps:
1) and (3) constructing a device which is required to be used for detecting and adjusting the imaging quality process of the zoom components as shown in FIG. 2. The star point detector optical path 1, the zoom component 3 and the star point detector imaging component are coaxially arranged in sequence.
2) Sequentially and respectively placing each zoom component 3 on a star point detector 10, and respectively observing the shape of a star point image and the star point energy distribution of the image surface of each zoom component 3 before, at the focal surface and after the focal surface;
3) if the energy peak value of the star point image is at the geometric center, the energy is distributed uniformly and the shape is symmetrical, the zoom component 3 can enter the assembly link of the zoom lens;
4) if the star point energy distribution corresponding to the star point image is not uniform and the shape is asymmetric, and the energy peak value of the star point image is not positioned at the geometric center, the lens sensitive to assembly tolerance in the zoom component 3 can be analyzed by an auxiliary adjusting computer 11 connected with the star point detector computer 4 and by utilizing optical design software in the auxiliary adjusting computer 11;
5) adjusting tolerance sensitive lenses, specifically adjusting by rotating the lenses, interval compensation, center deviation adjustment, lens inclination adjustment, re-centering processing and the like until the shapes of the star point images of the zoom components are symmetrical and the energy distribution is symmetrical;
6) after the star point image meets the preset requirements, each zoom component 3 can enter a zoom lens assembly link.
Assembling all the zoom components to complete the final assembly of the zoom lens.
And then, determining the focusing zero position and the zoom lens image surface position, wherein the step needs to be completed by means of a light path as shown in fig. 3, and the step comprises a collimator 5, a zoom lens 7, a reading microscope 8 and a manual observation point 9 which are horizontally and sequentially arranged, and human eyes can observe at the manual observation point 9. The collimator 5 is positioned at the left side of the zoom lens 7 and is mainly used for providing an observation target; the manual observation point 9 is located at the exit pupil of the reading microscope 8, and is used for observing an image of an object through the zoom lens 7 by the reading microscope 8.
The collimator 5 focal plane position is provided with a discrimination plate as a collimator target 6, and the discrimination plate can be used for detecting the limit resolution of the short focus and the long focus of the zoom lens 7.
The reading microscope 8 is composed of a microscope objective 801 and a microscope eyepiece 802, and is matched with human eye observation at the manual observation point 9 for image quality judgment.
The numerical aperture of the reading microscope 8 should be larger than the maximum numerical aperture of the zoom lens 7.
The zoom components 3 are referred to as a fixed group and a movable group, and each zoom component 3 includes at least one lens. Wherein the fixed group comprises a front fixed group, a rear fixed group and other lens groups which do not move in the zooming process of the zoom lens 7; the moving group comprises a zoom group, a compensation group and the like, and the positions of the lens groups move in the zooming process of the zoom lens 7.
The zero position of the focusing group is also determined by the determination of the focusing zero position and the image surface position of the zoom lens, so that a reference is provided for the image surface butt joint of the zoom lens at the later stage, and a detection reference is provided for the image quality detection of the zoom lens at the later stage.
The method for determining the focusing zero position and the zoom lens image surface position specifically comprises the following steps:
1) building the focusing zero position and focal plane position determination light path;
2) observing the discrimination image of the collimator 5 formed by the short-focus position of the zoom lens 7 by using the reading microscope 8, and adjusting the front and back positions of the reading microscope 8 to ensure that the discrimination pattern image is most clear and the imaging definition meets the preset requirement;
3) keeping the position of the reading microscope 8 still, adjusting a zoom cam of the zoom lens 7, and enabling the zoom lens 7 to be in a long-focus position;
4) observing the resolution pattern imaging definition again by using a reading microscope 8; if the image is fuzzy, focusing is carried out by utilizing the focusing group, so that the discrimination pattern is clearly imaged again; and if the image is clear, the current position of the focusing group is the focusing zero position, and the zero position of the focusing group is marked to prepare for image surface butt joint of a later detector.
5) Keeping the position of the focusing group unchanged, recording as a focusing zero position, adjusting the zoom lens 7 to a short-focus position, and observing the resolution pattern imaging definition; if not, adjusting the front and back positions of the reading microscope 8 to enable the reading microscope to image clearly again, and repeating the step 3) and the step 4); until the discrimination pattern is imaged clearly; if the adjustment is carried out again, recording the last focusing zero position as a final focusing zero position;
6) marking a final focusing zero position, rotating the zoom lens 7 to a short-focus position, and enabling the focusing group to be located at an image surface position corresponding to the zero position, namely the position of the zoom lens detector. And (3) keeping the focusing group at a zero position, adjusting the front and rear positions of the detector and the zoom lens, selecting the thickness of a proper trimming pad to ensure that short-focus imaging is clear (image observation), namely finishing the determination of the image surface position of the zoom lens, and enabling the zoom lens to be capable of imaging uniformly and clearly from short-focus zooming to long-focus zooming at the moment.
The zoom lens image quality detection is mainly used for detecting the imaging performance of each focal length position in the whole zooming process of the zoom lens 7, and at the moment, the focusing group must be located at the final focusing zero position. And when the zoom lens image quality is detected, the discrimination rate plate is replaced by a star point plate, and when the image plane consistency is detected, the discrimination rate plate is used.
Generally speaking, the relative position tolerance between each zoom component 3 in the zoom lens 7 is very loose, and after each zoom component 3 of the zoom lens 7 is controlled by the intermediate process of each step, the imaging quality generally has no problem, unless the processing of structural components, such as lens barrel, cam zoom curve, etc., is seriously out of tolerance, so that the position relation of each zoom component 3 of the zoom lens 7 is greatly deviated. In order to keep the rigor and the integrity of the process, the adjustment link of the position relationship between the zoom components 3 after the image quality detection of the zoom lens can also be used as an assembly process.
And then sequentially completing the image surface butt joint of the detector, the penetration of the zoom lens and the calibration of the curve position of the zoom cam.
The steps of framing and centering the lens in the zoom components, assembling the lens in each zoom component of the zoom lens, assembling the zoom lens, butting the image surface of the detector, penetrating the zoom lens and calibrating the position of the zoom cam curve can directly adopt the existing known mode, and are all mature methods in the field.
The lens assembly of each zooming component 3 mainly comprises the processes of lens interval measurement in the zooming component 3, lens centering processing in each group, lens adjustment in the group and the like.
The above description is only an embodiment of the present invention, and is not intended to limit the scope of the present invention, and all equivalent structural changes made by using the contents of the present specification and the drawings, or applied directly or indirectly to other related technical fields, are included in the scope of the present invention.
Claims (6)
1. A method of adjusting a zoom lens system, comprising the steps of:
s1, completing the assembly of the lenses in each zoom component of the zoom lens;
s2, detecting and adjusting the imaging quality of each zoom component
Sequentially placing each zoom component between a light path of a star point detector and an imaging component of the star point detector, wherein the zoom component, the light path of the star point detector and the imaging component of the star point detector are coaxially arranged, observing whether energy peak values of before-focus, focus surface and after-focus star point images of image surfaces of each zoom component are all positioned at a geometric center, if so, continuing to execute the step S3, otherwise, analyzing and confirming a lens which is most sensitive to assembly tolerance in the zoom component, and adjusting assembly parameters until the energy peak values of the before-focus, focus surface and after-focus star point images of the zoom component are all positioned at the geometric center;
s3, assembling all the zoom components to complete the assembly of the zoom lens;
s4, determining focusing zero and zoom lens image surface position
S4.1, placing a zoom lens between a collimator and a reading microscope, wherein the zoom lens, the collimator and the reading microscope are coaxially arranged, placing a discrimination plate at the focal plane position of the collimator, adjusting the position of the reading microscope, and observing through the reading microscope until the discrimination imaging definition of the collimator formed by the short-focus position of the zoom lens meets the preset requirement;
s4.2, keeping the position of the reading microscope fixed, and adjusting a zoom cam of the zoom lens to enable the zoom lens to be in a long-focus position;
s4.3, observing a collimator tube identification rate image formed by the telephoto position of the zoom lens through a reading microscope, and if the imaging definition meets the preset requirement, continuing to execute the step S4.4; otherwise, focusing by using a focusing group of the zoom lens until the imaging definition meets the preset requirement;
s4.4, marking the position of the focusing group as a focusing zero position when the imaging definition in the step S4.3 meets the preset requirement, and marking;
s4.5, adjusting the zoom lens to a short-focus position, observing the collimator tube identification rate image formed by the short-focus position of the zoom lens through the reading microscope again, and if the imaging definition meets the preset requirement, continuing to execute the step S4.6; otherwise, adjusting the position of the microscope until the imaging definition meets the preset requirement, and repeating the steps from S4.2 to S4.4;
s4.6, marking the focusing zero position marked at the last time as a final focusing zero position, and keeping the focusing group at the final focusing zero position, wherein the short-focus image surface of the zoom lens is the image surface position of the whole zoom lens;
s4-5, zoom lens image quality detection
Keeping the focusing group at a final focusing zero position, detecting the imaging effect of each focal length position in the whole zooming process of the zoom lens, and if the imaging definition meets the preset requirement, continuing to execute the step S5; otherwise, adjusting the position relation among the zoom components, and repeating the steps S3 and S4;
s5, completing detector image surface butt joint and zoom lens feedthrough
Adjusting the front and back positions of a detector of the zoom lens and the zoom lens, simultaneously keeping the short-focus imaging definition of the zoom lens in accordance with the preset requirement, completing the butt joint of the image surface of the zoom lens and the detector, and further completing the center penetration of the zoom lens;
and S6, calibrating the curve position of the zoom cam to finish the adjustment of the zoom system.
2. A zoom lens adjustment method according to claim 1, wherein: in step S2, the adjusting the assembly parameters is specifically to perform at least one of adjustment of rotating the lens, compensation of spacing, adjustment of center offset, adjustment of lens tilt, and re-centering on the lens with the most sensitive assembly tolerance.
3. A zoom lens adjustment method according to claim 2, wherein: in step S2, observing whether the energy peak values of the pre-focus, the focus plane, and the post-focus star point images of the image planes of the zoom components are all located at the geometric center, specifically observing through the point spread functions of the pre-focus, the focus plane, and the post-focus points of the image planes of the zoom components.
4. A zoom lens adjustment method according to claim 3, wherein: in step S2, the analysis confirms the most sensitive lens to assembly tolerance in the zoom component, specifically, the analysis confirms through the optical design software.
5. A zoom lens adjustment method according to claim 4, wherein: in step S4, the numerical aperture of the reading microscope is larger than the maximum numerical aperture of the zoom lens.
6. A zoom lens adjustment method according to claim 5, wherein: step S1 is preceded by completing framing and centering of lenses in each zoom component of the zoom system.
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