A high-precision optical interval adjustment device and its use method

Abstract

The present invention discloses a high-precision optical interval adjustment device and a method for using the same, and the present invention relates to the field of optical machine adjustment technology. The high-precision optical interval adjustment device comprises an optical instrument body, a lens barrel is arranged on the upper part of the optical instrument body, an adjustment module for optical interval adjustment is arranged inside the lens barrel, the adjustment module comprises an adjustment unit and a star point diffraction unit for adjustment, a plane refraction lens group is fixedly installed at the bottom of the lens barrel, the adjustment module serves as a front lens group, and a rear lens group installed on the optical instrument body is arranged below the plane refraction lens group. In the present invention, the light wave reflected by the refraction surface is the diffraction result of the pupil surface, and the optical interval of the optical instrument body is judged to meet the required requirements according to the result of the light intensity distribution. After the adjustment is completed, the refraction surface is closed during the assembly process, and the result observed by the lens barrel is changed to the observation result obtained by the front lens group and the plane refraction lens group, so as to achieve high-precision and fast optical interval adjustment operation.

Description

Technical Field

[0001] The present invention relates to the technical field of optical-mechanical adjustment, and in particular to a high-precision optical interval adjustment device and a use method thereof. Background Art

[0002] In the design of new optoelectronic systems, in order to meet the requirements of miniaturization and lightweight, it is often necessary to fold the optical path. A common structural form is that the front mirror group and the rear mirror group are respectively installed in a folding mirror frame, and are installed to the theoretical position through a flat reflector to achieve the required folding angle and make the optical axes of the front mirror group and the rear mirror group coaxial. At this time, the front mirror group and the rear mirror group need to meet the theoretical spacing requirements to obtain a good comprehensive imaging effect and meet the design values ​​of optical indicators, such as focal length, field of view, resolution, etc.

[0003] The traditional contact measurement method uses a height gauge to measure the optical spacing between the mirrors of a linear optical lens, but this measurement method is no longer applicable to the optical spacing of the mirrors of an optical system that includes a folded optical path. Therefore, the optical spacing between the front and rear mirror groups in the folded optical path can usually only be guaranteed through structural processing, and because the spacing cannot be measured and adjusted, the system imaging often has uniform halos, and the focal length often cannot meet the requirements.

[0004] For example, a method for eliminating optical spacing adjustment errors of an optical lens with a folded light path disclosed in Chinese invention patent publication number CN114815284A, the invention uses the characteristic that the optical spacing error between the front mirror group and the rear mirror group of the folded light path will cause system spherical aberration by means of a parallel light tube, a star point graticule, an illumination device, a lifting adjustable platform, a CCD image sensor with a microscope lens and a high-resolution display, etc., and adjusts the optical spacing between the front mirror group and the rear mirror group through the star point detection method, and accurately eliminates the optical spacing error of the front mirror group and the rear mirror group by observing the spherical aberration change of the star point image until a spherical aberration star point diffraction image is obtained, thereby completing the accurate adjustment of the optical lens of the folded light path, using a CCD image sensor with a microscope lens for image acquisition and displaying it on a high-resolution display, which facilitates the observation and storage of images, and can also enable observation by multiple people, and the results are more objective and true.

[0005] The above-mentioned device is intended to eliminate the error of optical interval adjustment in folding the optical lens of the light path. However, when the optical instrument observes the object to be measured, interval deviation still often occurs. The reason is that when observing different objects after the optical instrument is assembled, the converter and the refractive transfer lens group often need to be adjusted, and the vibration caused when taking it causes the optical elements in the lens barrel to shift, which leads to the above-mentioned interval deviation. Therefore, it is necessary to realize high-precision optical interval adjustment of the optical instrument on the basis of the above, aiming to improve the imaging quality, reduce the occurrence of aberration problems such as spherical aberration and coma, and adapt to different observation conditions and different observation needs. Summary of the invention

[0006] In view of the deficiencies in the prior art, the present invention provides a high-precision optical interval adjustment device and a method of using the same, which solves the problems raised in the above-mentioned background technology.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: a high-precision optical interval adjustment device and a method of using the same, comprising an optical instrument body, a lens barrel is arranged on the upper part of the optical instrument body, an adjustment module for optical interval adjustment is arranged inside the lens barrel, the adjustment module comprises an adjustment unit and a star point diffraction unit for adjustment, a plane refraction lens group for switching is fixedly installed at the bottom of the lens barrel, the adjustment module serves as a front lens group, and a rear lens group installed on the optical instrument body is arranged below the plane refraction lens group.

[0008] A further improvement of the technical solution of the present invention is that: the adjustment unit includes a first substrate and a second substrate arranged in the lens barrel, an optical channel is fixedly arranged between the first substrate and the second substrate, the star point diffraction unit is installed at the lower part of the second substrate, and four groups of adjustment grooves for movable adjustment are opened on the upper surface of the first substrate, the four groups of adjustment grooves are arranged in a circle center array on the first substrate, and corresponding abutment blocks are slidably installed in the four adjustment grooves.

[0009] A further improvement of the technical solution of the present invention is that: the four groups of abutment blocks are vertically fixedly installed with corresponding fixed shafts, the four groups of fixed shafts are provided with traction link parts, each of the fixed shafts and the traction link parts thereon can be detachably connected, one end of the four groups of traction link parts away from the fixed shafts is fixedly installed on the middle rotating member, the traction link parts are bent as a whole, and the four traction link parts connected are pulled during the rotation of the middle rotating member, the eccentric directions of the four traction link parts are all counterclockwise, and the middle rotating member pulls the four groups of traction link parts thereon during the self-rotation process. The connecting rod portion rotates to achieve simultaneous adjustment of the position of the abutment block portion at the same time. The middle rotating member is rotatably installed on the upper part of the first substrate. During the rotation of the middle rotating member, the four connected traction connecting rod portions are pulled. The off-axis directions of the four traction connecting rod portions are all counterclockwise. During the self-rotation process, the middle rotating member pulls the four groups of traction connecting rod portions thereon to rotate, thereby achieving simultaneous adjustment of the position of the abutment block portion at the same time, achieving the expansion and closing of the optical channel and the optical opening, thereby adjusting the optical interval according to different light intensities or observation distances to obtain the best observation effect.

[0010] A further improvement of the technical solution of the present invention is that the abutment block slides on the first substrate through the adjustment groove, the outer wall of the abutment block and the adjustment groove form an optical opening, the movement of the abutment block changes the size of the optical opening, and adjusts the incident light passing through the optical opening of the adjustment module.

[0011] A further improvement of the technical solution of the present invention lies in that: extension blocks are welded on the left and right sides of each abutment block portion, and the upper parts of each group of adjacent extension blocks are connected to a refractive surface that is L-shaped as a whole through a damping shaft. The light reflected by the refractive surface is distributed on the four sides of the main optical axis, so the light waves reflected by the refractive surface are the diffraction results of the pupil surface, so the light intensity distribution of the star point is the square of the Fourier change of the circular function, and whether the optical spacing of the main body of the optical instrument meets the required requirements is judged according to the result of the light intensity distribution. Arc blocks are welded on the tops of the two groups of abutment blocks, and positioning rods are passed through the two groups of arc blocks. Connecting sleeves are sleeved on both sides of the two groups of positioning rods, and a bidirectional electric control push rod is fixedly installed between the two connecting sleeves. The light reflected by the refractive surface can be directly observed by the lens barrel. When the refractive surface is not driven to close by the damping shaft, the diffraction result of the light wave on the pupil plane is the light reflected by the refractive surface. At this time, the star point image in the observed diffraction result should be the brightest central circular spot and the concentric rings with decreasing brightness on the outside. If the observed result does not meet the above conditions, adjust the position of the abutment block in the adjustment groove until the above phenomenon occurs, which is a reasonable optical interval. Finally, the damping shaft is rotated and the refractive surface is closed. At this time, the result observed by the lens barrel is changed to the observation result obtained by the front lens group and the plane refractive lens group, achieving high-precision and fast optical interval adjustment operation.

[0012] A further improvement of the technical solution of the present invention is that: the star point diffraction unit includes a second channel opened at the bottom of the second substrate, the second channel is located directly below the middle rotating member and a positioning rod is fixedly arranged, both ends of the positioning rod are hinged with hinged rods, and a winding coil part is welded at the bottom of the hinged rod. After the required current is applied to the winding coil part, the electric push rods arranged at both ends of the positioning rod rotate because they are arranged at both ends of the yoke assembly. In addition, the winding coil part is connected to the optical lens through the connecting rod, and the optical lens rotates. When the plane refraction mirror group is changed, the refraction angle is adjusted to further adjust the optical interval.

[0013] A further improvement of the technical solution of the present invention is that the plane refracting lens group includes a mirror plate rotatably arranged at the lower part of the lens barrel, and multiple groups of refracting lens barrels are detachably connected to the mirror plate, and converters fixed to the optical instrument body are arranged below the multiple groups of refracting lens barrels. The converter is connected to a plurality of objective lenses through a gear set in the optical instrument body, and a rear lens group is arranged below the objective lenses.

[0014] A further improvement of the technical solution of the present invention is that a storage rack is arranged directly below the rear mirror group, and the rear mirror group directly observes the object to be measured. In order to ensure the comprehensiveness of the observation, the storage rack needs to be equipped with a corresponding angle adjustment device, so a rotating member is rotatably installed at the bottom of the storage rack, and the other end of the rotating member is welded to the main body of the optical instrument. A welding member is fixedly installed on one side of the storage rack, and the middle part of the welding member is connected with an upper base through a fixed shaft. A lower base is arranged below the upper base, and a screw connected with the upper base threadedly is rotatably installed on the lower base. The upper base moves in the vertical direction due to the rotation of the screw. Due to the connection of the welding member, the pitch angle of the rotating member is adjusted, and a second bevel gear is keyed on the screw, and the second bevel gear is meshed with the first bevel gear. The first bevel gear is keyed to the power rod, and a screw connected with the upper base threadedly is rotatably installed on the lower base. The upper base moves in the vertical direction due to the rotation of the screw. Due to the connection of the welding member, the pitch angle of the rotating member is adjusted to achieve a suitable observation angle to meet the observation needs of different observers.

[0015] A further improvement of the technical solution of the present invention is that: a method for using a high-precision optical interval adjustment device is also provided, and the specific steps are as follows:

[0016] S1: After the main body of the optical instrument is assembled, the two-way electric control push rod is energized, the two sets of abutment blocks of the arc blocks are moved, the middle rotating member is rotated under force, and the other two sets of abutment blocks are moved simultaneously. At this time, the light detected by the upper part of the lens barrel is the light directly reflected by the refractive surface. The star point of the diffraction result reflected by the refractive surface is the brightest in the central circular spot, and the outer side is surrounded by concentric rings with decreasing brightness. If the diffraction result is different from the above, the two-way electric control push rod is continuously started to change the position of the abutment block;

[0017] S2: After obtaining the ideal star point diffraction result, disassemble the lens barrel, rotate the extension block through the damping shaft to complete the closing of the refraction surface, and after reassembly, apply the required current to the winding coil part, and rotate the positioning rods at both ends of the magnetic yoke assembly. The optical lens rotates at this time to receive the light entering from the optical channel and the optical opening. After further adjustment of the optical interval, the plane refraction frame lens group selects the appropriate lens group;

[0018] S3: After the object to be measured is placed on the rack, the power rod is selectively rotated according to the observation result reflected by the lens barrel. Due to the meshing of the gear set, the upper base moves in the vertical direction, and finally the pitch angle adjustment of the rotating part is completed, so as to achieve the appropriate observation angle and complete the best observation of the main body of the optical instrument.

[0019] Compared with the prior art, the present invention has the following beneficial effects: the light wave reflected by the refractive surface is the diffraction result of the pupil surface, and the optical interval of the main body of the optical instrument is judged according to the result of the light intensity distribution to determine whether it meets the required requirements, and the adjustment of the reasonable optical interval is completed. After the adjustment is completed, the refractive surface is closed during the assembly process, and the result observed by the lens barrel is changed to the observation result obtained by the front lens group and the plane refractive lens group, so as to achieve high-precision and fast optical interval adjustment operation;

[0020] During the rotation of the middle rotating member, the four connected traction link parts are pulled, and the eccentric directions of the four traction link parts are all counterclockwise. During the self-rotation of the middle rotating member, the four groups of traction link parts thereon are pulled to rotate, so as to achieve simultaneous adjustment of the position of the abutment block part, and to achieve expansion and closing of the optical channel and the optical opening, so as to adjust the optical interval according to different light intensities or observation distances to obtain the best observation effect;

[0021] By rotating a screw connected to the upper base through a thread, the upper base moves in the vertical direction. Due to the connection of the welded parts, the pitch angle of the rotating part is adjusted to achieve a suitable observation angle to meet the observation needs of different observers. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of a high-precision optical interval adjustment device and a method for using the same;

[0023] Figure 2 High-precision optical interval adjustment device and method of use thereof Figure 1 The enlarged schematic diagram at A in the middle;

[0024] Figure 3 It is a left view of a high-precision optical interval adjustment device and a method for using the same;

[0025] Figure 4A schematic diagram of a high-precision optical interval adjustment device and a method for using the same from a top view;

[0026] Figure 5 A front view of the interior of a lens barrel in a high-precision optical interval adjustment device and a method for using the same;

[0027] Figure 6 A schematic diagram of an adjustment module in a high-precision optical interval adjustment device and a method for using the same;

[0028] Figure 7 A top view of the structure of an adjustment module in a high-precision optical interval adjustment device and a method for using the same;

[0029] Figure 8 It is a schematic diagram of the structure of the adjustment unit and the star point diffraction unit in the high-precision optical interval adjustment device and the use method thereof;

[0030] Fig. 9 The present invention is a flow chart of a high-precision optical interval adjustment device and a method for using the same.

[0031] In the figure: 100, optical instrument body; 200, lens barrel; 300, plane refracting lens group; 301, lens plate; 302, refracting lens barrel; 303, converter; 304, objective lens; 400, rear lens group; 401, storage rack; 402, rotating member; 403, welding member; 404, fixed shaft; 405, upper base; 406, lower base; 407, screw; 408, second bevel gear; 409, first bevel gear; 410, power rod; 501, first base plate; 502, second base plate Plate; 503, optical channel; 504, adjustment groove portion; 505, abutment block portion; 506, fixed shaft portion; 507, traction link portion; 508, middle rotating member; 509, optical opening; 510, extension block; 511, damping shaft; 512, refractive surface; 513, arc block; 514, positioning rod; 515, connecting sleeve; 516, two-way electric control push rod; 517, second channel; 518, support rod; 519, hinged rod; 520, winding coil portion; 521, optical lens. DETAILED DESCRIPTION

[0032] Various exemplary embodiments, features and aspects of the present application will be described in detail below with reference to the accompanying drawings. The same reference numerals in the accompanying drawings represent elements with the same or similar functions. Although various aspects of the embodiments are shown in the accompanying drawings, the drawings are not necessarily drawn to scale unless otherwise specified.

[0033] The word “exemplary” is used exclusively herein to mean “serving as an example, example, or illustration.” Any embodiment described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other embodiments.

[0034] In addition, in order to better illustrate the present application, numerous specific details are provided in the specific examples below. It should be understood by those skilled in the art that the present application can also be implemented without certain specific details. In some examples, methods, means, and elements well known to those skilled in the art are not described in detail in order to highlight the subject matter of the present application.

[0035] Reference Figure 1 - Fig. 9 , the present invention provides three technical solutions:

[0036] Embodiment 1:

[0037] A high-precision optical interval adjustment device and a method for using the same, comprising an optical instrument body 100, a lens barrel 200 is arranged on the upper part of the optical instrument body 100, an adjustment module for optical interval adjustment is arranged inside the lens barrel 200, the adjustment module comprises an adjustment unit and a star point diffraction unit for adjustment, a plane refraction lens group 300 for switching is fixedly installed at the bottom of the lens barrel 200, the adjustment module serves as a front lens group, and a rear lens group 400 installed on the optical instrument body 100 is arranged below the plane refraction lens group 300.

[0038] The adjustment unit includes a first substrate 501 and a second substrate 502 arranged in the lens barrel 200, an optical channel 503 is fixedly arranged between the first substrate 501 and the second substrate 502, the star point diffraction unit is installed at the lower part of the second substrate 502, and four groups of adjustment grooves 504 for movable adjustment are opened on the upper surface of the first substrate 501. The four groups of adjustment grooves 504 are arranged in a circle center array on the first substrate 501, and corresponding abutment blocks 505 are slidably installed in the four adjustment grooves 504.

[0039] The four groups of abutment blocks 505 are all vertically fixed with corresponding fixed shafts 506, and the four groups of fixed shafts 506 are all provided with traction link portions 507. Each fixed shaft portion 506 and the traction link portion 507 thereon are detachably connected, and one end of the four groups of traction link portions 507 away from the fixed shaft portion 506 is fixedly installed on the middle rotating member 508, and the traction link portion 507 is bent as a whole. During the rotation of the middle rotating member 508, the four connected traction link portions 507 are pulled, and the eccentric directions of the four traction link portions 507 are all counterclockwise. During the self-rotation process, the middle rotating member 508 pulls the four groups of traction link portions 507 thereon to rotate, so as to realize the simultaneous adjustment of the position of the abutment block portion 505 at the same time, and the middle rotating member 508 is rotatably installed on the upper part of the first substrate 501.

[0040] The abutment block 505 slides on the first substrate 501 through the adjustment groove 504, and the outer wall of the abutment block 505 and the adjustment groove 504 form an optical opening 509. The movement of the abutment block 505 changes the size of the optical opening 509, and adjusts the incident light passing through the optical opening 509 of the adjustment module; during the rotation of the middle rotating member 508, the four connected traction link parts 507 are pulled, and the eccentric directions of the four traction link parts 507 are all counterclockwise. During the self-rotation process, the middle rotating member 508 pulls the four groups of traction link parts 507 thereon to rotate, so as to achieve simultaneous adjustment of the position of the abutment block 505 at the same time, and realize the expansion and closing of the optical channel 503 and the optical opening 509, so as to adjust the optical interval according to different light intensities or observation distances to obtain the best observation effect.

[0041] Embodiment 2:

[0042] On the basis of the first embodiment: each abutment block 505 is welded with an extension block 510 on both sides, and each group of adjacent extension blocks 510 is connected to an L-shaped refractive surface 512 on the upper part through a damping shaft 511. The light reflected by the refractive surface 512 is distributed on the four sides of the main optical axis. Therefore, the light wave reflected by the refractive surface 512 is the diffraction result of the pupil surface. Therefore, the light intensity distribution of the star point is the square of the Fourier change of the circular function. According to the result of the light intensity distribution, it is judged whether the optical interval of the optical instrument main body 100 meets the required requirements. The specific calculation formula is: ;in is the relative intensity, is the relative intensity of the diffraction image of the refracting surface 512 at the star point, r is the radial distance of the plane from the center of the diffraction image of the star point in the observed result, First-order Bessel function; arc blocks 513 are welded on the tops of the two groups of abutment blocks 505, and positioning rods 514 are passed through the two groups of arc blocks 513. Connecting sleeves 515 are sleeved on both sides of the two groups of positioning rods 514. A two-way electric control push rod 516 is fixedly installed between the two connecting sleeves 515. The light reflected by the refractive surface 512 can be directly observed by the lens barrel 200. When the refractive surface 512 is not driven to close by the damping shaft 511, the diffraction result of the light wave on the pupil surface is the light reflected by the refractive surface 512. The star image in the observed diffraction result should be that the central circular spot is the brightest, and the outer side is surrounded by concentric rings of decreasing brightness. If the observed result does not meet the above situation, the position of the abutment block 505 on the adjustment groove 504 is adjusted until the above phenomenon occurs, that is, a reasonable optical interval. Then, the damping shaft 511 is rotated and the refractive surface 512 is closed. At this time, the result observed by the lens barrel 200 is changed to the observation result obtained by the front lens group and the plane refractive lens group 300, so as to achieve a high-precision and fast optical interval adjustment operation.

[0043] The star point diffraction unit includes a second channel 517 opened at the bottom of the second substrate 502. The second channel 517 is located directly below the middle rotating member 508 and a support rod 518 is fixedly arranged. Articulated rods 519 are hinged at both ends of the support rod 518. A winding coil portion 520 is welded at the bottom of the hinged rod 519. After the required current is applied to the winding coil portion 520, the electric push rods arranged at both ends of the support rod 518 rotate because they are arranged at both ends of the yoke assembly. In addition, the winding coil portion 520 is connected to the optical lens 521 through the connecting rod, so the optical lens 521 rotates. When the plane refraction lens group 300 is changed, the refraction angle is adjusted, and the optical interval is further adjusted.

[0044] Embodiment three:

[0045] On the basis of the first and second embodiments: the plane refractive lens group 300 includes a mirror plate 301 rotatably arranged at the lower part of the lens barrel 200, and multiple groups of refractive lens barrels 302 are detachably connected to the mirror plate 301. A converter 303 fixed to the optical instrument body 100 is arranged below the multiple groups of refractive lens barrels 302. The converter 303 is connected to a plurality of objective lenses 304 through a gear set in the optical instrument body 100, and a rear lens group 400 is located below the objective lenses 304.

[0046] A shelf 401 is arranged directly below the rear lens group 400, and the rear lens group 400 directly observes the object to be measured. In order to ensure the comprehensiveness of observation, the shelf 401 needs to be equipped with a corresponding angle adjustment device, so a rotating member 402 is rotatably installed at the bottom of the shelf 401, and the other end of the rotating member 402 is welded to the optical instrument body 100. A welding member 403 is fixedly installed on one side of the shelf 401, and an upper base 405 is connected to the middle of the welding member 403 through a fixed shaft 404. A lower base 406 is arranged below the upper base 405, and a screw 407 threadedly connected to the upper base 405 is rotatably installed on the lower base 406. The screw 40 7 rotates, the upper base 405 moves in the vertical direction, due to the connection of the welding piece 403, the pitch angle of the rotating member 402 is adjusted, the second bevel gear 408 is keyed to the screw 407, the second bevel gear 408 is meshedly connected to the first bevel gear 409, the first bevel gear 409 is keyed to the power rod 410, the screw 407 threadedly connected to the upper base 405 is rotatably installed on the lower base 406, the screw 407 rotates, the upper base 405 moves in the vertical direction, due to the connection of the welding piece 403, the pitch angle of the rotating member 402 is adjusted to achieve a suitable observation angle to meet the observation needs of different observers.

[0047] The present invention also provides a method for using a high-precision optical interval adjustment device, S1: After the optical instrument body 100 is assembled, the bidirectional electric control push rod 516 is energized, and the two groups of abutment blocks 505 installed with the arc blocks 513 move, the middle rotating member 508 is rotated under force, and the other two groups of abutment blocks 505 move simultaneously. At this time, the light detected by the upper part of the lens barrel 200 is the light directly reflected by the refractive surface 512. The star point of the diffraction result reflected by the refractive surface 512 is the brightest in the central circular spot, and the outer side is surrounded by concentric rings with decreasing brightness. If the diffraction result is different from the above, the bidirectional electric control push rod 516 is continuously started to change the position of the abutment block 505;

[0048] S2: After obtaining the ideal star point diffraction result, disassemble the lens barrel 200, rotate the extension block 510 through the damping shaft 511, complete the closing of the refractive surface 512, and after reassembly, apply the required current to the winding coil part 520, and the support rods 518 arranged at both ends of the magnetic yoke assembly rotate. At this time, the optical lens 521 rotates to receive the light entering from the optical channel 503 and the optical opening 509. After further adjustment of the optical interval, the plane refraction frame lens group 300 selects a suitable lens group;

[0049] S3: After the object to be measured is placed on the rack 401, the power rod 410 is selectively rotated according to the observation result reflected by the lens barrel 200. Due to the engagement of the gear set, the upper base 405 moves in the vertical direction, and finally the pitch angle adjustment of the rotating member 402 is completed, so as to achieve a suitable observation angle and complete the optimal observation of the optical instrument body 100.

[0050] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0051] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-precision optical interval adjustment device, comprising an optical instrument body (100), characterized in that: A lens barrel (200) is arranged on the upper part of the optical instrument body (100); an adjustment module for adjusting the optical interval is arranged inside the lens barrel (200); the adjustment module comprises an adjustment unit for adjustment and a star point diffraction unit; a plane refraction lens group (300) for switching is fixedly installed at the bottom of the lens barrel (200); the adjustment module serves as a front lens group; and a rear lens group (400) mounted on the optical instrument body (100) is arranged below the plane refraction lens group (300); The adjustment unit comprises a first substrate (501) and a second substrate (502) which are arranged in the lens barrel (200); an optical channel (503) is fixedly arranged between the first substrate (501) and the second substrate (502); the star point diffraction unit is installed at the lower part of the second substrate (502); four groups of adjustment grooves (504) for movable adjustment are provided on the upper surface of the first substrate (501); the four groups of adjustment grooves (504) are arranged in a circle center array on the first substrate (501); and corresponding abutment blocks (505) are slidably installed in the four adjustment grooves (504); The four groups of abutment blocks (505) are all vertically fixedly mounted with corresponding fixed shafts (506), and the four groups of fixed shafts (506) are all provided with traction link parts (507), and each of the fixed shafts (506) and the traction link parts (507) thereon are detachably connected, and one end of the four groups of traction link parts (507) away from the fixed shafts (506) is fixedly mounted on a middle rotating member (508), and the off-axis directions of the four traction link parts (507) are all counterclockwise, and the middle rotating member (508) is rotatably mounted on the upper part of the first substrate (501); The abutment block (505) slides on the first substrate (501) through the adjustment groove (504); the outer wall of the abutment block (505) and the adjustment groove (504) form an optical opening (509); the movement of the abutment block (505) changes the size of the optical opening (509); An extension block (510) is welded to the left and right sides of each abutting block portion (505); the upper parts of each group of adjacent extension blocks (510) are connected to an L-shaped refractive surface (512) via a damping shaft (511); the light reflected by the refractive surface (512) is distributed on four sides of the main optical axis; arc blocks (513) are welded to the tops of the two groups of abutting block portions (505); positioning rods (514) are passed through the two groups of arc blocks (513); connecting sleeves (515) are sleeved on both sides of the two groups of positioning rods (514); and a bidirectional electric control push rod (516) is fixedly installed between the two connecting sleeves (515).

2. A high-precision optical interval adjustment device according to claim 1, characterized in that: The star point diffraction unit comprises a second channel (517) opened at the bottom of the second substrate (502); the second channel (517) is located directly below the middle rotating member (508); a support rod (518) is fixedly arranged; both ends of the support rod (518) are hinged with hinge rods (519); a winding coil portion (520) is welded to the bottom of the hinge rod (519); and the winding coil portion (520) is connected to an optical lens (521) via a connecting rod.

3. A high-precision optical interval adjustment device according to claim 1, characterized in that: The plane refractive lens group (300) comprises a mirror plate (301) rotatably arranged at the bottom of the lens barrel (200); a plurality of groups of refractive lens barrels (302) are detachably connected to the mirror plate (301); a converter (303) fixed to the optical instrument body (100) is arranged below the plurality of groups of refractive lens barrels (302); the converter (303) is connected to a plurality of objective lenses (304) via a gear set in the optical instrument body (100); and a rear lens group (400) is arranged below the objective lenses (304).

4. A high-precision optical interval adjustment device according to claim 1, characterized in that: A storage rack (401) is arranged directly below the rear lens group (400); a rotating member (402) is rotatably mounted on the bottom of the storage rack (401); the other end of the rotating member (402) is welded to the optical instrument body (100); a welding member (403) is fixedly mounted on one side of the storage rack (401); the middle of the welding member (403) is connected to an upper base (405) via a fixed shaft (404); a lower base (406) is arranged below the upper base (405); a screw rod (407) threadedly connected to the upper base (405) is rotatably mounted on the lower base (406); a second bevel gear (408) is keyed to the screw rod (407); the second bevel gear (408) is meshedly connected to a first bevel gear (409); the first bevel gear (409) is keyed to a power rod (410).

5. A method for using a high-precision optical interval adjustment device, applied to a high-precision optical interval adjustment device as claimed in any one of claims 1 to 4, characterized in that: The specific steps include: S1: After the optical instrument body (100) is assembled, the bidirectional electric control push rod (516) is energized, the two groups of abutment blocks (505) installed with the arc blocks (513) move, the middle rotating member (508) rotates under force, and the other two groups of abutment blocks (505) move simultaneously. At this time, the light detected by the upper part of the lens barrel (200) is the light directly reflected by the refractive surface (512). The star point of the diffraction result reflected by the refractive surface (512) is the brightest in the central circular spot, surrounded by concentric rings with decreasing brightness on the outside. If the diffraction result is different from the above, the bidirectional electric control push rod (516) is continuously started to change the position of the abutment block (505); S2: After obtaining the ideal star point diffraction result, the lens barrel (200) is disassembled, and the extension block (510) is rotated through the damping shaft (511) to close the refractive surface (512). After reassembly, the winding coil portion (520) is applied with the required current, and the support rods (518) arranged at both ends of the magnetic yoke assembly are rotated. At this time, the optical lens (521) rotates to receive the light entering from the optical channel (503) and the optical opening (509). After further adjustment of the optical interval is completed, the plane refraction frame lens group (300) selects a suitable lens group; S3: After the object to be measured is placed on the storage rack (401), the power rod (410) is selectively rotated according to the observation result reflected by the lens barrel (200). Due to the meshing of the gear set, the upper base (405) moves in the vertical direction, and finally the pitch angle adjustment of the rotating member (402) is completed, so as to achieve a suitable observation angle and complete the optimal observation of the optical instrument body (100).

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