CN106291907B - A kind of Three Degree Of Freedom secondary mirror adjusting apparatus - Google Patents
A kind of Three Degree Of Freedom secondary mirror adjusting apparatus Download PDFInfo
- Publication number
- CN106291907B CN106291907B CN201610871476.1A CN201610871476A CN106291907B CN 106291907 B CN106291907 B CN 106291907B CN 201610871476 A CN201610871476 A CN 201610871476A CN 106291907 B CN106291907 B CN 106291907B
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- China
- Prior art keywords
- secondary mirror
- lens barrel
- optical axis
- mirror holder
- degree
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Classifications
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
- G02B23/16—Housings; Caps; Mountings; Supports, e.g. with counterweight
Abstract
The invention discloses a kind of Three Degree Of Freedom secondary mirror adjusting apparatus, including the lens barrel for being equipped with the secondary mirror holder of secondary mirror eyeglass and being set on the outside of time mirror holder, and when initial position ensures that center line-systematic optical axis of lens barrel is overlapped with the center line of secondary mirror eyeglass.It is also provided at least two groups transmission mechanism, so that secondary mirror holder is moved along systematic optical axis direction in lens barrel and moved around the shaft rotation perpendicular to systematic optical axis.Control system controls the synchronization start and stop of all transmission mechanisms, and control transmission mechanism makes the center line of secondary mirror eyeglass be overlapped always with systematic optical axis in secondary mirror holder movement and rotation process.To sum up, the positioning accuracy during secondary mirror adjustment can be improved in the Three Degree Of Freedom adjusting apparatus in the application, and when can guarantee secondary mirror adjustment axis and systematic optical axis it is accurate coaxial.
Description
Technical field
The present invention relates to a kind of secondary mirror adjusting apparatus of heavy caliber Cassegrain optical system in photoelectric tracking technical field.
Background technology
Currently, it is to influence photoelectricity that heavy-caliber optical system, which mainly uses Cassegrain telescope form, secondary mirror adjustment technology,
The key technology of tracking system performance.
The purpose of secondary mirror adjustment is to improve the image quality of optical system, so as to it can accurately track different distance in the case of
Mobile target.Currently, the adjustment of secondary mirror is mainly single-degree-of-freedom adjustment mode in Cassegrain optical system, i.e. secondary mirror can only
It is moved along optical axis direction, and can not achieve swing.Single-degree-of-freedom adjustment mode is simple in structure, easy to implement, but to optical system
Installation accuracy and eyeglass surface precision it is more demanding.Moreover, for heavy-caliber optical system, single-degree-of-freedom adjustment side
The vibration of transmission mechanism and fuel factor are affected to secondary mirror Adjustment precision in formula, be easy to cause secondary mirror axis during the adjustment
The offset of line is so that it is difficult to ensure that the exact position of secondary mirror and the concentricity with systematic optical axis.Therefore, single-degree-of-freedom adjustment side
Formula is only applicable to small-bore optical system.
Therefore, how a kind of multiple degrees of freedom secondary mirror adjusting apparatus is provided, to improve the positioning accuracy during secondary mirror adjustment,
And when can guarantee secondary mirror adjustment axis and systematic optical axis it is accurate coaxial, be that those skilled in the art need the technology solved at present
Problem.
Invention content
In view of this, the present invention provides a kind of Three Degree Of Freedom secondary mirror adjusting apparatus, during improving secondary mirror adjustment
Positioning accuracy and ensure the accurate coaxial of axis and systematic optical axis when secondary mirror adjustment.
To achieve the above object, the present invention provides the following technical solutions：
A kind of Three Degree Of Freedom secondary mirror adjusting apparatus comprising：
The secondary mirror holder of secondary mirror is installed；
The lens barrel being set on the outside of the secondary mirror holder, the center line weight of the systematic optical axis of the lens barrel and the secondary mirror eyeglass
It closes；
At least two groups transmission mechanism arranged along the internal diameter of the lens barrel, all transmission mechanisms are along the lens barrel
The circumferential direction of diameter is uniformly distributed, and the transmission mechanism is for driving the secondary mirror holder in the lens barrel along the system light of the lens barrel
The direction of axis is mobile and is rotated around perpendicular to the direction of systematic optical axis；
The control system being connect with all equal signals of the transmission mechanism, the control system control all drivers
The synchronization start and stop of structure, controlling the transmission mechanism in the secondary mirror holder movement and rotation process makes the center line of the secondary mirror eyeglass
Always it is overlapped with the systematic optical axis of the lens barrel.
Preferably, in above-mentioned Three Degree Of Freedom secondary mirror adjusting apparatus, the secondary mirror eyeglass is mounted on described by connector
On secondary mirror holder, and the center line of the secondary mirror eyeglass is overlapped with the center line of the secondary mirror holder.
Preferably, in above-mentioned Three Degree Of Freedom secondary mirror adjusting apparatus, all transmission mechanisms include：
The main shaft and counter drive shaft being rotatably connected with the internal diameter of the lens barrel, the axis of the transmission shaft with it is described
Center line-systematic optical axis of lens barrel is parallel；
For driving the secondary mirror holder mobile and the driving mechanism of rotation；
It is used to support the supporting mechanism of the secondary mirror holder.
Preferably, in above-mentioned Three Degree Of Freedom secondary mirror adjusting apparatus, the control system includes：
On the secondary mirror holder and for feeding back the displacement sensor of secondary the mirror holder displacement distance and rotational angle；
Controller for receiving the signal that all institute's displacement sensors are sent out, when controller acquisition is any one
A institute's displacement sensors, which start to control other all described driving mechanisms when signal that is mobile and rotating, to move synchronously.
Preferably, in above-mentioned Three Degree Of Freedom secondary mirror adjusting apparatus, institute's displacement sensors are set on the secondary mirror holder.
Preferably, in above-mentioned Three Degree Of Freedom secondary mirror adjusting apparatus, the control system further includes all for controlling
The driving mechanism of the transmission mechanism synchronizes the driver of start and stop, and the driver receives the signal that the controller is sent out, with
Realize that the distance of all institute's displacement sensors movements is identical with the angle of rotation.
Preferably, in above-mentioned Three Degree Of Freedom secondary mirror adjusting apparatus, the transmission mechanism is two groups, and along the lens barrel
Systematic optical axis be arranged symmetrically.
It can be seen via above technical scheme that the invention discloses a kind of Three Degree Of Freedom secondary mirror adjusting apparatus, including installation
The lens barrel for having the secondary mirror holder of secondary mirror eyeglass and being set on the outside of time mirror holder, when initial position ensure the systematic optical axis of lens barrel with time
The center line of mirror eyeglass overlaps.In addition, at least two groups transmission mechanism is also provided with, so that secondary mirror holder is along lens barrel in lens barrel
The direction of system optical axis is mobile and dynamic around the shaft rotation perpendicular to systematic optical axis.In order to ensure what transmission mechanism moved in the process in driving
Distance is identical with the angle of rotation, is also provided with control system.Control system controls the synchronization start and stop of all transmission mechanisms, secondary
Control transmission mechanism makes the center line of secondary mirror eyeglass be overlapped always with the systematic optical axis of lens barrel in mirror holder movement and rotation process.This
By setting transmission mechanism at least two groups in application, and all transmission mechanisms uniformly divide along the circumferential of internal diameter of lens barrel
Cloth, so that when control system control transmission mechanism starts, the drive time mirror holder that all transmission mechanisms circumferentially synchronize moves
Dynamic and rotation ensures that the center line of secondary mirror eyeglass is overlapped with the systematic optical axis of lens barrel.To sum up, the Three Degree Of Freedom adjustment in the application
The positioning accuracy during secondary mirror adjustment can be improved in device, and when can guarantee secondary mirror adjustment axis and systematic optical axis it is accurate same
Axis.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 is the structural schematic diagram of the lens barrel and secondary mirror of Three Degree Of Freedom secondary mirror adjusting apparatus provided in an embodiment of the present invention；
Fig. 2 be the embodiment of the present invention by Three Degree Of Freedom secondary mirror adjusting apparatus structural schematic diagram.
Specific implementation mode
Core of the invention is to provide a kind of Three Degree Of Freedom secondary mirror adjusting apparatus, to improve the positioning during secondary mirror adjustment
Precision ensures the accurate coaxial of axis and systematic optical axis when secondary mirror adjustment.
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
As depicted in figs. 1 and 2, the invention discloses a kind of Three Degree Of Freedom secondary mirror adjusting apparatus, including are equipped with secondary mirror mirror
The secondary mirror holder 2 of piece 1 and the lens barrel 3 for being set in 2 outside of time mirror holder, when initial position, ensure systematic optical axis (the application of lens barrel 3
In lens barrel 3 systematic optical axis be lens barrel 3 center line) overlapped with the center line of secondary mirror eyeglass 1.In addition, being also provided at least
Two groups of transmission mechanisms, so that secondary mirror holder 2 is mobile along the direction (directions z) of center line-systematic optical axis of lens barrel 3 in lens barrel 3,
And/or it is rotated around perpendicular to systematic optical axis.In order to ensure transmission mechanism in the angle for driving the displacement and rotation moved in the process
It is identical, it is also provided with control system.Control system controls the synchronization start and stop of all transmission mechanisms, the movement of secondary mirror holder 2 and rotation
Control transmission mechanism makes the center line of secondary mirror eyeglass 1 be overlapped always with center line-systematic optical axis of lens barrel 3 in the process.The application
In by setting transmission mechanism at least two groups, and all transmission mechanisms are uniformly distributed along the circumferential direction of the internal diameter of lens barrel 3,
So that when control system control transmission mechanism starts, the drive time mirror holder 2 that all transmission mechanisms circumferentially synchronize moves
And rotation, ensure that the center line of secondary mirror eyeglass 1 is overlapped with center line-systematic optical axis of lens barrel 3.To sum up, three in the application from
By degree adjusting apparatus can be improved secondary mirror adjustment during positioning accuracy, ensure secondary mirror adjustment when axis and systematic optical axis it is accurate
Coaxially.
Specifically, secondary mirror eyeglass 1 is mounted on by connector 5 on time mirror holder 2, and the center line of secondary mirror eyeglass 1 with time
The center line of mirror holder 2 overlaps.In practice, the center line of secondary mirror eyeglass 1 is overlapped with the center line of time mirror holder 2, and needs to protect
The center line of card secondary mirror eyeglass 1 is overlapped with systematic optical axis.Therefore, as long as ensureing both time mirror holder 2 and lens barrel 3 in operating process
Center line overlaps.In view of foregoing description, the core in the application is to ensure during the adjustment the movement of time mirror holder 2 not
It can shift.
In further embodiment, all transmission mechanisms include driving mechanism 6, main shaft 7, counter drive shaft 8 with
And supporting mechanism 4.Wherein, main shaft 7 and counter drive shaft 8 are rotatably mounted on the internal diameter of lens barrel 3.Specifically, main biography
Moving axis 7 and counter drive shaft 8 can be installed by resilient mount, which is fixed on the inner wall of lens barrel 3, and leads
Transmission shaft 7 and counter drive shaft 8 are rotatably mounted in the mounting hole of resilient mount with certain eccentricity by bearing.For
Realization mechanization driving transmission shaft rotation, is provided with the driving mechanism 6 with transmission axis connection, by the driving of driving mechanism 6,
So that transmission shaft movement is to drive time movement of mirror holder 2 and rotation, above-mentioned supporting mechanism 4 to support the movement of time mirror holder 2 and turn
Dynamic stability.
Control system disclosed herein further includes displacement sensor 9 and controller 10.Wherein, displacement sensor 9 is solid
Dingan County is mounted on time mirror holder 2, and displacement sensor 9 is used to feed back the angle of distance and rotation that time mirror holder 2 moves, and by feedback
As a result it is sent to controller 10.The controller 10 can receive the signal that all displacement sensors 9 are sent out, and arbitrary obtaining
One displacement sensor 9, which starts to control other all driving mechanisms 6 when signal that is mobile or rotating, to move synchronously, due to control
Device 10 can receive the signal that all displacement sensors 9 are sent out, therefore, it can be achieved that all driving mechanisms 6 move synchronously, and
Ensure that the angle for the distance or rotation that all displacement sensors 9 move is identical.The application is the center line and mirror with secondary mirror holder 2
Overlapped when center line-systematic optical axis of cylinder 3 is initial is what background was set.
In addition, control system disclosed herein further includes being opened for controlling the driving mechanism 6 of all transmission mechanisms
The driver 11 stopped, the driver 11 receive the signal that sends out of controller 10, with realize that all displacement sensors 9 move away from
It is identical from the angle of rotation.Since driver 11 drives all driving mechanism 6 to synchronize start and stop so that transmission shaft movement away from
From the angle all same with rotation, it ensure that time mirror holder 2 stablizes movement.
Transmission mechanism can be set to two groups in specific embodiment, and this two groups of transmission mechanisms are along the center of lens barrel 3
Line-systematic optical axis is arranged symmetrically.
After the completion of optical system alignment, the initial value of both sides displacement sensor 9 is recorded respectively.It adjusts in work, while real
When acquire the location feedback value of both sides displacement sensor 9 and drive symmetrical both sides to drive according to high-precise synchronization closed loop control algorithm
Mechanism 6 works, and drives time mirror holder 2 to move in a straight line in the z-direction in a manner of synchronous translational traveling both sides main shaft 7,
It drives time mirror holder 2 to be rotated around y-axis by both sides counter drive shaft 8, and is rotated around x-axis by dynamic mirror holder 2 of unilateral motor driven belts,
To realize that the Three Degree Of Freedom high-precision of secondary mirror adjusts.
Each embodiment is described by the way of progressive in this specification, the highlights of each of the examples are with other
The difference of embodiment, just to refer each other for identical similar portion between each embodiment.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest range caused.
Claims (6)
1. a kind of Three Degree Of Freedom secondary mirror adjusting apparatus, which is characterized in that including：
The secondary mirror holder (2) of secondary mirror eyeglass (1) is installed；
The lens barrel (3) being set on the outside of the secondary mirror holder (2), the systematic optical axis of the lens barrel (3) and the secondary mirror eyeglass (1)
Center line overlaps；
At least two groups transmission mechanism arranged along the internal diameter of the lens barrel (3), all transmission mechanisms are along the lens barrel (3)
The circumferential direction of internal diameter is uniformly distributed, and the transmission mechanism is for driving the secondary mirror holder (2) in the lens barrel (3) along the lens barrel
(3) direction of systematic optical axis is mobile or/and is rotated around perpendicular to the direction of systematic optical axis；
The control system being connect with all equal signals of the transmission mechanism, the control system control all transmission mechanisms
Synchronous start and stop, controlling the transmission mechanism in secondary mirror holder (2) movement and rotation process makes the center of the secondary mirror eyeglass (1)
Line is overlapped with the systematic optical axis of the lens barrel (3) always.
2. Three Degree Of Freedom secondary mirror adjusting apparatus according to claim 1, which is characterized in that the secondary mirror eyeglass (1) passes through
Connector (5) is mounted on the secondary mirror holder (2), and in the center line of the secondary mirror eyeglass (1) and the secondary mirror holder (2)
Heart line overlaps.
3. Three Degree Of Freedom secondary mirror adjusting apparatus according to claim 1, which is characterized in that all transmission mechanisms are equal
Including：
The main shaft (7) and counter drive shaft (8) being rotatably connected with the internal diameter of the lens barrel (3), the axis of the transmission shaft
It is parallel with the systematic optical axis of the lens barrel (3)；
With the driving mechanism (6) of the transmission axis connection；
It is used to support the supporting mechanism (4) of the secondary mirror holder (2).
4. Three Degree Of Freedom secondary mirror adjusting apparatus according to claim 3, which is characterized in that the control system includes：
On the secondary mirror holder (2) and for feeding back the displacement sensing of secondary mirror holder (2) displacement distance and rotational angle
Device (9)；
Controller (10) for receiving the signal that all institute's displacement sensors (9) are sent out, when the controller (10) obtains
Other all driving mechanisms are controlled when any one of displacement sensor (9) being taken to start signal that is mobile or rotating
(6) it moves synchronously.
5. Three Degree Of Freedom secondary mirror adjusting apparatus according to claim 4, which is characterized in that the control system further includes using
In the driver (11) for the synchronous start and stop of driving mechanism (6) for controlling all transmission mechanisms, the driver (11) receives
The signal that the controller (10) sends out, to realize the angle of all institute's displacement sensors (9) mobile distance and rotation
It is identical.
6. according to claim 1-5 any one of them Three Degree Of Freedom secondary mirror adjusting apparatus, which is characterized in that the transmission mechanism
It it is two groups, and be arranged symmetrically along center line-systematic optical axis of the lens barrel (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610871476.1A CN106291907B (en) | 2016-09-30 | 2016-09-30 | A kind of Three Degree Of Freedom secondary mirror adjusting apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610871476.1A CN106291907B (en) | 2016-09-30 | 2016-09-30 | A kind of Three Degree Of Freedom secondary mirror adjusting apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106291907A CN106291907A (en) | 2017-01-04 |
| CN106291907B true CN106291907B (en) | 2018-10-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610871476.1A Expired - Fee Related CN106291907B (en) | 2016-09-30 | 2016-09-30 | A kind of Three Degree Of Freedom secondary mirror adjusting apparatus |
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| CN (1) | CN106291907B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110112645A (en) * | 2019-05-30 | 2019-08-09 | 中国科学院长春光学精密机械与物理研究所 | A kind of automatic regulating system and method for laser resonator resonant reflec-tors |
| CN114296211B (en) * | 2021-12-30 | 2022-09-02 | 中国科学院长春光学精密机械与物理研究所 | High-precision secondary mirror repeated positioning device |
| CN114624853A (en) * | 2022-04-04 | 2022-06-14 | 中国科学院长春光学精密机械与物理研究所 | Dynamic adjusting device for pose of secondary mirror of large-caliber telescope |
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2016
- 2016-09-30 CN CN201610871476.1A patent/CN106291907B/en not_active Expired - Fee Related
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| CN1423148A (en) * | 2001-12-04 | 2003-06-11 | 财团法人工业技术研究院 | Adjustable lens group apparatus |
| CN1826547A (en) * | 2003-06-06 | 2006-08-30 | 株式会社尼康 | Optical element holding device, lens barrel, exposing device, and device producing method |
| CN101553698A (en) * | 2006-09-22 | 2009-10-07 | 爱斯科姆控股有限公司 | A heliostat support and drive mechanism |
| JP2009237103A (en) * | 2008-03-26 | 2009-10-15 | Nikon Vision Co Ltd | Moving mechanism, and optical device |
| CN104459977A (en) * | 2014-12-30 | 2015-03-25 | 中国科学院长春光学精密机械与物理研究所 | Secondary mirror adjusting mechanism used for vehicle-mounted adaptive optical imaging telescope |
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| CN106291907A (en) | 2017-01-04 |
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