CN110579850A - positioning system and positioning device applied to large-aperture optical system - Google Patents
positioning system and positioning device applied to large-aperture optical system Download PDFInfo
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- CN110579850A CN110579850A CN201910887831.8A CN201910887831A CN110579850A CN 110579850 A CN110579850 A CN 110579850A CN 201910887831 A CN201910887831 A CN 201910887831A CN 110579850 A CN110579850 A CN 110579850A
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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
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Abstract
The invention discloses a positioning device applied to a large-aperture optical system, which comprises a first limiting plate, a second limiting plate, a positioning seat, an elastic driving part and a damping buffer piece, wherein the first limiting plate and the second limiting plate are oppositely and fixedly arranged, the elastic driving part is elastically abutted against the positioning seat, and the damping buffer piece is fixedly connected with the positioning seat. When the elastic driving part pushes the positioning seat to move to a target position, the positioning seat is abutted against the main mirror, the main mirror exerts a reaction force on the positioning seat due to self gravity, and the positioning seat overcomes elastic resistance and damping force to move towards a direction far away from the target position at the same time, so that double buffering of the positioning seat is realized, and the main mirror is prevented from being impacted by the positioning seat; the elastic driving part pulls the positioning seat to be further away from the target position, so that the acting force applied to the main mirror by the positioning seat is eliminated, and the main mirror is completely supported by the existing supporting mechanism. Therefore, the positioning device applied to the large-aperture optical system provided by the invention is beneficial to improving the repeated positioning precision of the primary mirror. The invention also discloses a positioning system comprising the positioning device and applied to a large-aperture optical system.
Description
Technical Field
The invention relates to the field of auxiliary equipment of optical elements, in particular to a positioning device applied to a large-caliber optical system. The invention also relates to a positioning system comprising the positioning device and applied to a large-aperture optical system.
background
A large-aperture optical system generally includes a primary mirror and a support mechanism for supporting the primary mirror. In order to make the primary mirror have high working accuracy, the supporting mechanism needs to have high positioning accuracy, for example, the supporting mechanism including the optical axis and the mechanical axis needs to ensure that the optical axis and the mechanical axis can be completely overlapped when the primary mirror is integrated.
During normal work, the primary mirror needs to be subjected to film coating treatment, the action of an optical axis and a mechanical axis connected with the primary mirror is inevitably caused during the film coating treatment of the primary mirror, and in order to enable the optical axis to be completely coincided with the mechanical axis, a worker needs to readjust the optical axis and the mechanical axis after the film coating of the primary mirror is completed each time, so that the positioning precision of the supporting mechanism is adjusted. The primary mirror which needs to be coated regularly causes the staff to frequently adjust the optical axis and the mechanical axis, so as to ensure the position of the primary mirror to be accurate and reliable.
In order to make the primary mirror have higher repeated positioning accuracy, a positioning device is usually required to be relied on when the primary mirror is positioned. Whereas the support mechanism of the primary mirror is usually obtained by an exact optimization design, the existing positioning devices cannot withstand the weight of the primary mirror, meaning that the positioning device can only be used for positioning the primary mirror.
Although the existing positioning device can relieve the repeated positioning difficulty of the primary mirror to a certain extent, the existing positioning device has shortcomings. The existing positioning device usually comprises a positioning block and a supporting spring connected with the positioning block, the positioning block offsets with the primary mirror by virtue of the elastic force of the supporting spring, the supporting spring can also reduce the impact vibration received by the positioning block by virtue of the elastic force when the positioning block is far away from the primary mirror, but the buffering degree of the supporting spring is limited, the positioning block is still enabled to receive great impact vibration in the moving process, the primary mirror is extremely easy to be influenced, and the repeated positioning precision of the primary mirror is caused to be too low.
In addition, after the primary mirror is positioned, the positioning block still elastically offsets the primary mirror under the action of the supporting spring, although the rigidity applied to the primary mirror by the positioning block is far less than the rigidity of the supporting mechanism, the positioning block supported by the supporting spring still applies a certain acting force to the primary mirror, the acting force can hardly be eliminated, the primary mirror can not be completely supported by the supporting mechanism, and the mirror surface deformation of the primary mirror can be increased due to the supporting force applied by the positioning block in severe cases.
Therefore, it is an urgent technical problem to be solved by those skilled in the art how to improve the repeated positioning accuracy of the primary mirror and eliminate the influence of the positioning device on the mirror surface deformation.
Disclosure of Invention
In view of the above, an object of the present invention is to provide a positioning system and a positioning device applied to a large-aperture optical system, which can achieve double buffering, eliminate an acting force applied to a primary mirror, and facilitate improvement of repeated positioning accuracy of the primary mirror.
the specific scheme is as follows:
The invention provides a positioning device applied to a large-caliber optical system, which comprises:
The first limiting plate and the second limiting plate are fixedly arranged oppositely;
the positioning seat penetrates through the first limiting plate;
the elastic driving part penetrates through the second limiting plate and is elastically abutted against the positioning seat so as to drive the positioning seat to be close to or far away from the target position, so that the positioning seat limits the posture of the main mirror at the target position; the elastic driving part is used for realizing buffering when the positioning seat is far away from the target position by means of elastic resistance when the positioning seat receives the counterforce applied by the main mirror;
and the damping buffer piece is fixedly connected with the positioning seat and used for further realizing the buffering of the positioning seat by means of damping force when the positioning seat is far away from the target position.
Preferably, the elastic driving part includes:
The elastic support is positioned between the first limiting plate and the second limiting plate;
The two ends of the elastic part are respectively propped against the positioning seat and the elastic support;
and the driving guide assembly is fixedly connected with one end of the elastic support far away from the elastic part and is used for driving the elastic support to move.
Preferably, the elastic support is provided with a mounting groove for mounting the elastic element, and one end of the positioning seat close to the elastic element is provided with a supporting column for sleeving the elastic element.
preferably, the drive guide assembly comprises:
Adjusting the base;
the adjusting rod is nested with the adjusting base and slides along the axial direction relative to the adjusting base;
And the guide rod is fixedly arranged at one end of the adjusting rod, which is far away from the adjusting base, and penetrates through the second limiting plate to be fixedly connected with the elastic support.
preferably, still including having the second limiting plate, overlapping in adjusting the pole periphery and with the support housing that the base links firmly mutually, the damping bolster specifically is the hydraulic damper who is fixed in the support housing, the piston rod of hydraulic damper passes second limiting plate and elastic support in proper order in order to link firmly mutually with the position seat.
Preferably, the adjusting rod is provided with a central cavity, and the damping buffer piece is arranged in the central cavity.
preferably, the support device further comprises a limiting shell which is provided with a first limiting plate and sleeved on the periphery of the elastic support and fixedly connected with the support shell.
preferably, the adjusting device further comprises a positioning assembly arranged between the adjusting rod and the adjusting base and used for limiting the position of the adjusting rod relative to the adjusting base.
Preferably, still include and adjust the base and link firmly in order to support the support base of adjusting the base mutually, support the base and be equipped with the hole of dodging that supplies the adjusting lever to pass.
The invention also provides a positioning system applied to the large-aperture optical system, which comprises a plurality of groups of positioning devices applied to the large-aperture optical system.
compared with the background art, the positioning device applied to the large-aperture optical system provided by the invention comprises a first limiting plate, a second limiting plate, a positioning seat, an elastic driving part and a damping buffer piece.
The elastic driving part is pushed relative to the second limiting plate, the elastic driving part pushes the positioning seat which is elastically abutted against the elastic driving part to move relative to the first limiting plate, and when the positioning seat moves to the target position, the positioning seat abuts against the main mirror to limit the posture of the main mirror;
Meanwhile, the main mirror exerts a counterforce on the positioning seat due to the gravity of the main mirror, and the positioning seat overcomes the elastic resistance of the elastic driving part to move towards the direction far away from the target position, so that the positioning seat can initially realize buffering; furthermore, in the process that the positioning seat moves away from the target position, the damping buffer piece enables the positioning seat to further realize buffering by means of damping force; therefore, the positioning seat realizes double buffering by the elastic driving part and the damping buffer piece, greatly reduces the impact vibration of the positioning seat, and enables the main mirror to be free from the impact of the positioning seat, thereby improving the repeated positioning precision of the main mirror.
For the reverse pulling elasticity drive division of second limiting plate, the positioning seat that elasticity drive division pulling was offseted is for first limiting plate reverse movement, makes the positioning seat further keep away from the target location, is favorable to elasticity drive division to resume to natural state to for elasticity drive division eliminates to apply the elastic force of positioning seat and provides probably, and then eliminate the effort that the positioning seat was applied to the primary mirror, make the primary mirror supported by current supporting mechanism completely, thereby prevent that the mirror surface of primary mirror from taking place to warp because of receiving the holding power.
Therefore, the positioning device applied to the large-aperture optical system provided by the invention is beneficial to improving the repeated positioning precision of the primary mirror and eliminating the influence of the positioning device on the mirror surface deformation.
The positioning system comprising the positioning device and applied to the large-aperture optical system has the same beneficial effects.
drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a cross-sectional view of a positioning seat pushed to a target position by a positioning device applied to a large-aperture optical system according to the present invention;
FIG. 2 is a cross-sectional view of a positioning base away from a target position in a positioning apparatus for a large-aperture optical system according to the present invention;
Fig. 3 is a cross-sectional view of the positioning base being separated from the main mirror by the positioning device applied to the large-aperture optical system.
the reference numbers are as follows:
the damping buffer device comprises a positioning seat 1, an elastic driving part 2, a damping buffer part 3, a supporting shell 4, a limiting shell 5, a positioning assembly 6 and a supporting base 7;
A support column 11;
an elastic support 21, an elastic piece 22 and a driving guide assembly 23;
A mounting groove 211;
an adjusting base 231, an adjusting rod 232 and a guide rod 233;
A second limiting plate 41;
A first limit plate 51;
relief holes 71.
Detailed Description
the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
in order that those skilled in the art will better understand the disclosure, the invention will be described in further detail with reference to the accompanying drawings and specific examples.
Referring to fig. 1 to 3, fig. 1 is a cross-sectional view illustrating that a positioning base is pushed to a target position by a positioning device applied to a large-aperture optical system according to the present invention; FIG. 2 is a cross-sectional view of a positioning base away from a target position in a positioning apparatus for a large-aperture optical system according to the present invention; fig. 3 is a cross-sectional view of the positioning base being separated from the main mirror by the positioning device applied to the large-aperture optical system.
the embodiment of the invention discloses a positioning device applied to a large-caliber optical system, which comprises a first limiting plate 51, a second limiting plate 41, a positioning seat 1, an elastic driving part 2 and a damping buffer piece 3.
The first limiting plate 51 can abut against the positioning seat 1, and is used for limiting the position of the positioning seat 1. The second limiting plate 41 can abut against the elastic driving portion 2 and is used for limiting the position of the elastic driving portion 2. The first stopper plate 51 and the second stopper plate 41 are parallel to each other and are disposed opposite to each other, and the relative positions of the two are fixed. The positioning seat 1 passes through the first limiting plate 51 and elastically abuts against the elastic driving portion 2.
In this embodiment, the positioning seat 1 includes a positioning rod and an abutting baffle, and the positioning rod passes through the first limiting plate 51 so as to abut against the main mirror, thereby defining the posture of the main mirror. Correspondingly, the first limiting plate 51 is provided with a via hole for the positioning rod to pass through. The butt baffle is located the periphery of locating lever bottom, and butt baffle and the coaxial setting of locating lever to make the butt baffle stop the locating lever and deviate from first limiting plate 51. Specifically, the positioning rod is cylindrical, and the abutting baffle is annular. Of course, the structure of the positioning socket 1 is not limited thereto.
the elastic driving part 2 passes through the second limiting plate 41 so as to drive the positioning socket 1 to approach or depart from the target position. The target position here is a position at which the positioning base 1 can define the posture of the main mirror, and in this specific embodiment, the target position is a position at which the positioning lever is located when the abutment flap abuts against the first stopper plate 51, and the positioning lever can abut against the main mirror at this time. In addition, when the positioning base 1 receives the reaction force applied by the main mirror, the elastic driving part 2 can realize buffering when the positioning base 1 is far away from the target position by means of elastic resistance.
The damping buffer member 3 is fixedly connected with the positioning seat 1 and is fixed relative to the second limiting plate 41. When the positioning seat 1 is far away from the target position, the damping buffer piece 3 enables the positioning seat 1 to further realize buffering by means of damping force.
The elastic driving part 2 is pushed relative to the second limit plate 41, the elastic driving part 2 pushes the positioning seat 1 which is elastically abutted against the elastic driving part to move relative to the first limit plate 51, and when the positioning seat 1 moves to the target position, the positioning seat 1 abuts against the main mirror, so that the posture of the main mirror is limited;
Meanwhile, the main mirror exerts a reaction force on the positioning seat 1 due to the self gravity, and the positioning seat 1 overcomes the elastic resistance of the elastic driving part 2 to move towards the direction far away from the target position, so that the positioning seat 1 primarily realizes buffering; further, in the process that the positioning seat 1 moves away from the target position, the damping buffer piece 3 enables the positioning seat 1 to further realize buffering by means of damping force; therefore, the positioning seat 1 realizes double buffering by the elastic driving part 2 and the damping buffering part 3, greatly reduces the impact vibration of the positioning seat 1, and enables the main mirror to be free from the impact of the positioning seat 1, thereby improving the safety of the main mirror in the installation process and being beneficial to improving the repeated positioning precision of the main mirror.
Then, the elastic driving portion 2 is pulled reversely relative to the second limiting plate 41, the positioning seat 1 elastically abutted by the elastic driving portion 2 is moved reversely relative to the first limiting plate 51, so that the positioning seat 1 is further away from the target position, and the elastic driving portion 2 is favorable for recovering to a natural state, thereby providing possibility for the elastic driving portion 2 to eliminate the elastic force applied to the positioning seat 1, further eliminating the acting force applied to the main mirror by the positioning seat 1, enabling the main mirror to be completely supported by the existing supporting mechanism, improving the supporting effect of the main mirror, and preventing the mirror surface of the main mirror from being deformed due to the supporting force.
in summary, the positioning device applied to the large-aperture optical system provided by the invention is beneficial to improving the repeated positioning precision of the primary mirror and can eliminate the influence of the positioning device on the mirror surface deformation.
In this particular embodiment, the elastic driving portion 2 optionally includes an elastic support 21, an elastic member 22 and a driving guide assembly 23. The elastic support 21 is located between the first limiting plate 51 and the second limiting plate 41, and is used for supporting the elastic element 22. The elastic piece 22 is arranged between the positioning seat 1 and the elastic support 21, and two ends of the elastic piece 22 respectively abut against the positioning seat 1 and the elastic support 21. The resilient member 22 is preferably a generally cylindrical spring.
in this embodiment, in order to limit the elastic element 22, the elastic support 21 is provided with a mounting groove 211 for mounting the elastic element 22, and one end of the positioning seat 1 close to the elastic element 22 is provided with a supporting pillar 11 for the elastic element 22 to be sleeved, so that one end of the elastic element 22 abuts against the mounting groove 211 and the other end abuts against the supporting pillar 11, thereby preventing the elastic element 22 from being separated from the positioning seat 1 or the elastic support 21, and ensuring reliable operation of the elastic element 22. Specifically, the elastic support 21 is cylindrical, and the mounting groove 211 is specifically a cylindrical groove at one end of the elastic support 21 close to the positioning seat 1.
the driving guide assembly 23 is fixedly connected to an end of the elastic support 21 away from the elastic member 22 so as to drive the elastic support 21 to move. It should be noted that the driving guide may be driven manually, hydraulically, or electrically, and is not limited in particular.
In this particular embodiment, the drive guide assembly 23 is preferably manually driven and includes an adjustment mount 231, an adjustment lever 232, and a guide rod 233. The adjusting rod 232 is nested with the adjusting base 231, so as to reduce the occupied space and make the structure more compact. Preferably, the adjustment base 231 has a disk shape, and the center of the adjustment base 231 has an adjustment hole to be fitted with the adjustment rod 232. The adjustment rod 232 is disposed in the adjustment hole such that the adjustment rod 232 slides in the axial direction with respect to the adjustment base 231. The axial direction here means a direction parallel to the central axis of the adjustment lever 232.
In order to ensure that the positioning seat 1 stably moves, the positioning seat 1, the elastic piece 22, the elastic support 21 and the adjusting rod 232 are coaxially arranged, so that the elastic piece 22 can be uniformly stretched, and the influence on the repeated positioning precision of the main mirror caused by the shaking of the positioning seat 1 is avoided.
Preferably, the adjusting rod 232 is connected with the adjusting base 231 by a screw thread, so as to facilitate the manual precise rotation of the adjusting rod 232, but not limited thereto. With reference to the current view of fig. 1, when the adjusting rod 232 is rotated clockwise relative to the adjusting base 231, the adjusting rod 232 pushes the elastic support 21 to move upward; when the adjustment lever 232 is rotated counterclockwise with respect to the adjustment base 231, the adjustment lever 232 pulls the elastic support 21 downward.
The guide rod 233 is fixedly disposed at an end of the adjusting rod 232 away from the adjusting base 231 and penetrates through the second limiting plate 41, a portion of the guide rod 233 penetrating through the second limiting plate 41 is fixedly connected to the elastic support 21, and correspondingly, the second limiting plate 41 is provided with a guide hole for the guide rod 233 to penetrate through, so that the guide rod 233 guides the elastic support 21 to move. In this embodiment, a fixing plate for fixing the guide bar 233 is provided at an end of the adjusting lever 232 remote from the adjusting base 231, and the fixing plate is fixed to an end of the adjusting lever 232 by a fastening screw. Specifically, the fixing plate is annular. One end of the guide post is fixed on the fixing plate. The guide post is connected with the fixing plate through a connecting bolt, the guide post is also in threaded connection with the elastic support 21, specifically, a connecting stud is arranged at one end, close to the elastic support 21, of the guide post, the elastic support 21 is provided with a connecting thread groove matched with the connecting stud, and the connecting stud is matched with the connecting thread groove. Furthermore, the end of the adjusting rod 232 is provided with a plurality of guiding posts which are uniformly arranged in a circular ring shape, so that the elastic support 21 is uniformly stressed. Of course, the distribution and connection of the guide posts are not limited to this.
in order to prolong the service life and the matching precision of the guide rod 233, the driving guide assembly 23 further comprises a bushing arranged on the guide rod 233 and the guide hole bracket, so that the guide rod 233 and the guide hole are prevented from being seriously abraded, and the guide precision of the guide rod 233 is favorably improved. The bushing may be a copper oilless bushing or the like, and is not particularly limited thereto.
The invention also comprises a supporting shell 4 which is provided with a second limiting plate 41 and is sleeved on the periphery of the adjusting rod 232, and the supporting shell 4 is fixedly connected with the adjusting base 231. In this embodiment, the supporting housing 4 includes a circular side plate and a second limiting plate 41 fixed to one end of the circular side plate, and the adjusting rod 232 is located in a cavity formed in the center of the circular side plate. One side of the annular side plate, which is far away from the second limiting plate 41, is abutted against the adjusting base 231, and the annular side plate and the adjusting base are fixedly connected through a plurality of connecting screws.
in this embodiment, the damping bumper 3 is a hydraulic damper fixed to the support case 4, a cylinder of the hydraulic damper is fixed to the support case 4, and specifically, a fixing hole for fixing the hydraulic damper is provided in the center of the second limiting plate 41. The piston rod of the hydraulic damper sequentially passes through the second limiting plate 41 and the elastic support 21 until the piston rod is fixedly connected with the positioning seat 1, so that the positioning seat 1 is buffered. Correspondingly, the center of the end of the elastic support 21 away from the elastic element 22 is provided with a buffer hole for the piston rod to pass through, and the center of the end of the positioning seat 1 close to the elastic element 22 is provided with a buffer groove. The buffer hole, the buffer groove and the mounting groove 211 are coaxially arranged. Of course, the type and connection manner of the damping bumper 3 are not limited thereto.
in order to make the structure more compact, the specific central cavity of the adjusting rod 232 is provided, and the damping buffer member 3 is arranged in the central cavity, that is, the adjusting rod 232 and the damping buffer member 3 are also nested, so that the damping buffer member 3, the adjusting rod 232, the elastic support 21, the elastic member 22 and the positioning seat 1 are all coaxially arranged, and the occupied space is further reduced.
The invention also comprises a first limit plate 51 and a limit shell 5 sleeved on the periphery of the elastic support 21, wherein the limit shell 5 is fixedly connected with the support shell 4. In this embodiment, the limit housing 5 includes a limit ring plate and a first limit plate 51 provided at one end of the limit ring plate. The end of the limiting ring plate far away from the first limiting plate 51 is connected with the second limiting plate 41 through a plurality of connecting screws. Of course, the structure and connection mode of the limiting shell 5 are not limited to this.
The invention also comprises a positioning component 6 arranged between the adjusting rod 232 and the adjusting base 231, so that the positioning component 6 is used for limiting the position of the adjusting rod 232 relative to the adjusting base 231, the position of the adjusting rod 232 is ensured to be unchanged after the adjusting rod 232 is adjusted each time, the repeated positioning precision of the positioning seat 1 is favorably improved, and the repeated positioning precision of the primary mirror is further improved.
it should be added that only after the adjustment of the adjusting rod 232 is completed, the positioning assembly 6 is screwed down to lock the adjusting rod 232; when the adjustment lever 232 is rotated, the positioning member 6 is in the unlocked state.
In this embodiment, the positioning assembly 6 includes a positioning ring plate, positioning holes, positioning fasteners, and positioning abutment surfaces. The positioning ring plate is fixedly arranged on the periphery of the adjusting rod 232 and is circular. The positioning holes are a plurality of circular through holes arranged on the positioning ring arcs and are uniformly arranged in a circular ring shape. The positioning abutting surface is provided with the bottom end of the adjusting base 231, and the positioning fastener penetrates through the positioning hole and abuts against the positioning abutting surface. The positioning fastener is preferably a fastening screw. Of course, the structure of the positioning assembly 6 is not limited thereto.
The present invention further includes a supporting base 7 fixedly connected to the adjusting base 231, so that the supporting base 7 supports other components. In this embodiment, the adjusting base 231 is provided with a top of the supporting base 7, and the adjusting base 231 is fixedly connected with the supporting base 7 through a plurality of connecting bolts. Specifically, the support base 7 has a disk shape, but the structure and the connection method of the support base 7 are not limited thereto.
In order to ensure that the adjusting rod 232 can reliably rotate, the supporting base 7 is provided with an avoiding hole 71 for the adjusting rod 232 to pass through, the avoiding hole 71 is preferably a circular through hole, the inner diameter of the avoiding hole 71 is larger than the outer diameter of the positioning ring plate, and conditions are provided for the rotation of the adjusting rod 232 and the installation of the positioning assembly 6.
The working principle of the positioning device applied to the large-aperture optical system provided by the invention is as follows:
in the initial state, the elastic element 22 is in a natural state, the positioning assembly 6 is in a locking release state, and the elastic support 21 abuts against the second limiting plate 41;
The adjusting rod 232 is rotated clockwise, the adjusting rod 232 moves upwards relative to the adjusting base 231, the adjusting rod 232 pushes the elastic support 21 to move upwards through the guide post, the elastic support 21 extrudes the elastic part 22, the elastic part 22 pushes the positioning seat 1 to move upwards relative to the first limiting plate 51 by means of elastic force until the adjusting rod 232 abuts against the second limiting rod, and at the moment, the positioning seat 1 reaches a target position;
The positioning seat 1 is abutted against the main mirror, the main mirror exerts a reaction force on the positioning seat 1 due to self gravity, and the positioning seat 1 overcomes the elastic force of the elastic piece 22 to move downwards to be far away from a target position, so that the positioning seat 1 primarily realizes buffering; in the process that the positioning seat 1 moves downwards, the damping buffer piece 3 enables the positioning seat 1 to further realize buffering by means of damping force;
When the positioning seat 1 moves downwards to abut against the elastic support 21, the positioning seat 1 is completely separated from the main mirror, the posture of the main mirror is determined, and the main mirror is connected with the supporting mechanism;
The adjusting rod 232 is rotated counterclockwise, the adjusting rod 232 moves downward relative to the adjusting base 231 until the adjusting rod 232 drives the elastic support 21 to abut against the second limiting plate 41, at this time, the elastic member 22 is completely restored to the initial state, and the positioning seat 1 is also completely separated from the main mirror at the same time;
The adjusting and positioning assembly 6 locks the adjusting rod 232;
thus, the primary mirror is positioned once, and the primary mirror can be adjusted periodically by circulating the steps.
The method also provides a positioning system applied to the large-aperture optical system, which comprises a plurality of groups of positioning devices applied to the large-aperture optical system, wherein the plurality of groups of positioning devices are mutually matched to realize accurate positioning of the primary mirror, and the positioning system has the same beneficial effects.
the positioning system and the positioning device for a large-aperture optical system provided by the present invention are described in detail above, and the principle and the embodiment of the present invention are explained in detail herein by applying specific examples, and the description of the above embodiments is only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (10)
1. A positioning device for a large-aperture optical system, comprising:
A first limiting plate (51) and a second limiting plate (41) which are oppositely and fixedly arranged;
the positioning seat (1) penetrates through the first limiting plate (51);
the elastic driving part (2) penetrates through the second limiting plate (41) and elastically abuts against the positioning seat (1) to drive the positioning seat (1) to be close to or far away from a target position, so that the positioning seat (1) limits the posture of a main mirror at the target position; the elastic driving part (2) is used for realizing buffering when the positioning seat (1) is far away from the target position by means of elastic resistance when the positioning seat (1) is subjected to the reaction force exerted by the main mirror;
and the damping buffer piece (3) is fixedly connected with the positioning seat (1) and is used for enabling the positioning seat (1) to further realize buffering by means of damping force when the positioning seat (1) is far away from the target position.
2. the positioning device applied to a large-aperture optical system according to claim 1, wherein the elastic driving portion (2) comprises:
An elastic support (21) positioned between the first limiting plate (51) and the second limiting plate (41);
The two ends of the elastic part (22) are respectively propped against the positioning seat (1) and the elastic support (21);
And the driving guide assembly (23) is fixedly connected with one end of the elastic support (21) far away from the elastic piece (22) and is used for driving the elastic support (21) to move.
3. The positioning device applied to the large-aperture optical system according to claim 2, wherein the elastic support (21) is provided with a mounting groove (211) for mounting the elastic member (22), and one end of the positioning seat (1) close to the elastic member (22) is provided with a supporting column (11) for sleeving the elastic member (22).
4. The positioning device applied to a large-aperture optical system according to claim 3, wherein the driving guide assembly (23) comprises:
An adjustment mount (231);
An adjusting rod (232) nested with the adjusting base (231) and sliding along the axial direction relative to the adjusting base (231);
And the guide rod (233) is fixedly arranged at one end, far away from the adjusting base (231), of the adjusting rod (232) and penetrates through the second limiting plate (41) to be fixedly connected with the elastic support (21).
5. The positioning device applied to the large-aperture optical system according to claim 4, further comprising a support housing (4) having the second limiting plate (41) and sleeved on the periphery of the adjusting rod (232) and fixedly connected to the adjusting base (231), wherein the damping buffer (3) is a hydraulic damper fixed to the support housing (4), and a piston rod of the hydraulic damper sequentially penetrates through the second limiting plate (41) and the elastic support (21) to be fixedly connected to the positioning seat (1).
6. The positioning device applied to the large-aperture optical system according to claim 4, further comprising a central cavity of the adjusting rod (232), wherein the damping buffer (3) is disposed in the central cavity.
7. The positioning device applied to the large-aperture optical system according to claim 5, further comprising a limiting shell (5) having the first limiting plate (51) and sleeved on the periphery of the elastic support (21) and fixedly connected to the support housing (4).
8. The positioning device applied to the large-aperture optical system according to any one of claims 4 to 7, further comprising a positioning assembly (6) disposed between the adjusting rod (232) and the adjusting base (231) for defining the position of the adjusting rod (232) relative to the adjusting base (231).
9. the positioning device applied to the large-aperture optical system according to claim 8, further comprising a supporting base (7) fixedly connected to the adjusting base (231) for supporting the adjusting base (231), wherein the supporting base (7) is provided with an avoiding hole (71) for the adjusting rod (232) to pass through.
10. A positioning system for a large-aperture optical system, comprising a plurality of sets of the positioning device according to any one of claims 1 to 9 for a large-aperture optical system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910887831.8A CN110579850B (en) | 2019-09-19 | 2019-09-19 | Positioning system and positioning device applied to large-aperture optical system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910887831.8A CN110579850B (en) | 2019-09-19 | 2019-09-19 | Positioning system and positioning device applied to large-aperture optical system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110579850A true CN110579850A (en) | 2019-12-17 |
| CN110579850B CN110579850B (en) | 2020-12-08 |
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Family Applications (1)
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| CN201910887831.8A Active CN110579850B (en) | 2019-09-19 | 2019-09-19 | Positioning system and positioning device applied to large-aperture optical system |
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| CN114047593A (en) * | 2022-01-14 | 2022-02-15 | 中国人民解放军63921部队 | Light-weight SiC primary mirror supporting mechanism of optical measuring equipment |
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| CN110579850B (en) | 2020-12-08 |
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