CN108535831A - The varifocal optical system of Driven by Ultrasonic Motors - Google Patents
The varifocal optical system of Driven by Ultrasonic Motors Download PDFInfo
- Publication number
- CN108535831A CN108535831A CN201810734232.8A CN201810734232A CN108535831A CN 108535831 A CN108535831 A CN 108535831A CN 201810734232 A CN201810734232 A CN 201810734232A CN 108535831 A CN108535831 A CN 108535831A
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- CN
- China
- Prior art keywords
- guide rail
- driven
- rotary shaft
- optical system
- barrel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
- G02B7/08—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification adapted to co-operate with a remote control mechanism
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B13/00—Viewfinders; Focusing aids for cameras; Means for focusing for cameras; Autofocus systems for cameras
- G03B13/32—Means for focusing
- G03B13/34—Power focusing
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lens Barrels (AREA)
- General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
Abstract
The present invention relates to varifocal optical system technical fields, more particularly to a kind of varifocal optical system of Driven by Ultrasonic Motors, including barrel, the inside of barrel is fixedly installed guide rail along optical axis direction, the movement parts that can be slided along guide rail are provided on guide rail, movement parts are installed with optical system zoom component；Barrel is further fixedly arranged on the ultrasound-driven component being connect with movement parts, and ultrasound-driven component drive motion part is slided along guide rail；Zoom accuracy in the present solution, moved along the rail in barrel by Driven by Ultrasonic Motors movement parts to realize zoom, can be being increased substantially, super large torque is being realized, zoom noise is greatly reduced, improves the stability of Zoom control.
Description
Technical field
The present invention relates to varifocal optical system technical fields, more particularly to a kind of Zoom optical system of Driven by Ultrasonic Motors
System.
Background technology
With the fast development of new and high technology, Zoom optic lens are widely used.Traditional zoom lens is general
It is driven using stepper motor and realizes zoom, however existing stepper motor, type of drive power consumption is high, easily by electromagnetic interference and makes an uproar
Sound influences, and wears no resistance；Existing location sensitive mode uses opened loop control simultaneously, and control accuracy is low, step-out etc. easily occurs no
Good phenomenon；Therefore, the universal stability of Zoom optic lens currently on the market is poor, big by magnetic field and noise effect, and energy consumption is high,
Easily there are the wild effects such as abrasion, step-out, cannot be satisfied present customer's more stringent requirement.
Invention content
Based on this, it is necessary in view of the above technical problems, a kind of varifocal optical system of Driven by Ultrasonic Motors is provided, to carry
The stability and precision of high zoom optical system Zoom control.
A kind of varifocal optical system of Driven by Ultrasonic Motors, including barrel, the inside of barrel are fixed along optical axis direction
It is provided with guide rail, the movement parts that can be slided along guide rail are provided on guide rail, movement parts are installed with optical system zoom component；
Barrel is further fixedly arranged on the ultrasound-driven component being connect with movement parts, and ultrasound-driven component drive motion part is slided along guide rail
It is dynamic.
The ultrasound-driven component includes ultrasound electric machine ontology in one of the embodiments, and ultrasound electric machine ontology turns
Son is connected with rotary shaft, and rotary shaft, which is connected with, to be fixed with movement parts along the rotary shaft sliding block that rotary shaft is slided, rotary shaft sliding block
Connection.
The outer surface of the rotary shaft is provided with screw thread, the inner surface of rotary shaft sliding block in one of the embodiments,
It is correspondingly provided with screw thread, is slided along rotary shaft by screw drive rotary shaft sliding block when rotary shaft rotates.
The ultrasound-driven component further includes the strip support being fixedly connected with barrel in one of the embodiments,
Plate, the length of support plate is suitable with the length of rotary shaft, and connects with the both ends of rotary shaft, and rotating shaft terminal is fixed on support plate
On rotated.
The support plate is fixedly connected by screw with barrel in one of the embodiments,.
Further include the guide rail slide block of strip in one of the embodiments, guide rail slide block is fixedly connected with movement parts, rotation
Shaft sliding block is fixedly connected with guide rail slide block, and guide rail slide block can slide on guide rail.
The guide rail quantity is at least two in one of the embodiments,.
The barrel includes that the first fixed cylinder being mutually permanently connected and second are fixed in one of the embodiments,
Tin, limit hole corresponding with guide rail is both provided with inside the first fixed cylinder and the second fixed cylinder, it is fixed after guide rail is inserted into limit hole
Connecting the first fixed cylinder and the second fixed cylinder makes guide rail be fixed relative to barrel.
First fixed cylinder is fixedly connected by screw with the second fixed cylinder in one of the embodiments,.
Compared with prior art, invention achieves following effects：
1, the application of the type of drive of ultrasonic motor can improve the precision of motor control by closed-loop control system so that
Position detection accuracy reaches Nano grade；
2, the application of the type of drive of ultrasonic motor realizes that super large torque, maximum moment are defeated up to same volume electromagnetic machine
Go out 5 times of torque；Meanwhile anti-overload ability is up to 10000G overloads；
3, noise can be greatly reduced in the application of the type of drive of ultrasonic motor, made an uproar with the operating work that supersonic frequency works
It is almost nil；
4, the application of the type of drive of ultrasonic motor, operating are not influenced by electromagnetic interference and other adverse circumstances, even if
It can also be worked normally under -40-80 DEG C, the adverse circumstances such as strong magnetic or humidity, better meet the market demand and client increasingly
High requirement；
Rotary shaft, is extended to the required length of movement parts movement by the 5, application of the new construction of ultrasonic motor, and passes through rotation
The cooperation of shaft and support plate, the stability that can greatly improve rotary shaft rotation carry to improve the kinematic accuracy of movement parts
The accuracy of high zoom.
Description of the drawings
Fig. 1 is the structural decomposition diagram of one embodiment of the invention；
Fig. 2 is the structural schematic diagram of one embodiment of the invention ultrasound-driven component；
Fig. 3 is the structural schematic diagram that one embodiment of the invention is integrally assembled.
Specific implementation mode
It is further described below in conjunction with Fig. 1 to Fig. 3：
A kind of varifocal optical system of Driven by Ultrasonic Motors, including barrel 100, the inside of barrel 100 is along optical axis side
To guide rail 110 is fixedly installed, the movement parts 120 that can be slided along guide rail 110 are provided on guide rail 110, movement parts 120 fix peace
Equipped with optical system zoom component；Barrel 100 is further fixedly arranged on the ultrasound-driven component 130 being connect with movement parts 120, surpasses
130 drive motion part 120 of sound-driving component is slided along guide rail 110.
Ultrasound electric machine be it is a kind of using the inverse piezoelectric effect and ultrasonic vibration of piezoelectric ceramics come obtain its movement and torque, will
The microdeformation of material amplifies by mechanical resonance and rubs the driving device that coupling is converted into the macroscopic motion of rotor；Ultrasonic electric
Machine is internally provided with encoder, reaches multiposition detection by controlling voltage, and can realize high-precision control by closed-loop control, from
And make position detection accuracy up to Nano grade；In addition, ultrasound electric machine also have electrodeless variable-speed, ultimate attainment mute, super large torque,
Simplify the series of advantages such as structure, diamagnetic interference, adaptable and anti-overload ability be strong, be vibration, kymatology, tribology,
Dynamic design power electronics, automatically controls, the new technology that the subjects tip achievement such as new material and new process combines.
Compared to the motor of electromagnetic drive, ultrasound electric machine is real in accurate control accuracy, torque and anti-interference etc. performance
Qualitative leap is showed；The new high-tech industry of China flourishes, in the case where National strategic planning and serial policy push, ultrasonic electric
Product of the machine as the most advanced branches of science of precision braking, aerospace, robot, intelligent armament, biologic medical, bionic movement,
The fields such as precise machining equipment, automobile industry and strong electromagnetic interference environment application will be used widely.
In the present embodiment, it is moved along the rail in barrel by Driven by Ultrasonic Motors movement parts to realize zoom, it can
By closed-loop control system, the precision of motor control is improved so that position detection accuracy reaches Nano grade, increases substantially
Zoom accuracy；Realize super large torque, for maximum moment up to 5 times of same volume electromagnetic machine output torque, anti-overload ability is reachable
10000G overloads；Noise is greatly reduced, the operating work to work with supersonic frequency is made an uproar almost nil；Ultrasound electric machine operates not by electricity
Magnetic disturbance and the influence of other adverse circumstances can work normally under -40-80 DEG C, the adverse circumstances such as strong magnetic or humidity,
Better meet the market demand and client's increasingly higher demands.
The ultrasound-driven component 130 includes ultrasound electric machine ontology 131, ultrasound electric machine sheet in one of the embodiments,
The rotor of body 131 is connected with rotary shaft 132, and rotary shaft 132 is connected with the rotary shaft sliding block 140 that can be slided along rotary shaft 132, rotation
Shaft sliding block 140 is fixedly connected with movement parts 120.
In the present embodiment, the rotor of ultrasound electric machine ontology is connected with rotary shaft, by rotary shaft drive motion part in mirror
Head cylinder in along optical axis longitudinal movement to realize the zoom of optical system, as long as and increase rotary shaft length, you can increase fortune
The movable length of moving part, to improve the flexibility of optical system Zoom control.
The outer surface of the rotary shaft 132 is provided with screw thread in one of the embodiments, rotary shaft sliding block 140 it is interior
Surface is also correspondingly provided with screw thread, is slided along rotary shaft 132 by screw drive rotary shaft sliding block 140 when rotary shaft 132 rotates.
The ultrasound-driven component 130 further includes the strip being fixedly connected with barrel 100 in one of the embodiments,
The length of shape support plate 150, support plate 150 is suitable with the length of rotary shaft 132, and connects with the both ends of rotary shaft 132, rotation
132 both ends of axis, which are fixed in support plate 150, to be rotated.
In the present embodiment, when the length of rotary shaft is longer, rotary shaft rotation may when driving rotary shaft slide block movement
It can shift, to influence the precision of optical system Zoom control, therefore be fixed in barrel and install support plate additional, rotary shaft is first
Tail is connect with support plate, even if so design rotary shaft is longer, also can ensure that will not shift when its rotation, to improve
The control accuracy of movement parts improves Zoom control precision.
The support plate 150 is fixedly connected by screw with barrel 100 in one of the embodiments,.
Further include the guide rail slide block 160 of strip in one of the embodiments, guide rail slide block 160 is solid with movement parts 120
Fixed connection, rotary shaft sliding block 140 are fixedly connected with guide rail slide block 160, and guide rail slide block 160 can slide on guide rail 110.
Existing in the present embodiment, the guide rail slide block slided on guide rail is strip, due to larger with the contact area of guide rail,
Therefore issuable deviation when guide rail slide block sliding can be greatly lowered to improve and become to improve the control accuracy of movement parts
Burnt control accuracy.
110 quantity of the guide rail is at least two in one of the embodiments,；So design can prevent movement parts around leading
Rail rotates, and improves the control accuracy of movement parts.
The barrel 100 includes the first fixed cylinder 101 and second being mutually permanently connected in one of the embodiments,
It is both provided with limit hole corresponding with guide rail 110, guide rail inside fixed cylinder 102, the first fixed cylinder 101 and the second fixed cylinder 102
After 110 are inserted into limit hole, being fixedly connected with the first fixed cylinder 101 and the second fixed cylinder 102 makes guide rail 110 relative to barrel 100
It is fixed.
First fixed cylinder 101 is fixedly connected by screw with the second fixed cylinder 102 in one of the embodiments,.
Claims (9)
1. a kind of varifocal optical system of Driven by Ultrasonic Motors, it is characterised in that：Including barrel (100), barrel (100)
Inside is fixedly installed guide rail (110) along optical axis direction, and the movement parts that can be slided along guide rail (110) are provided on guide rail (110)
(120), movement parts (120) are installed with optical system zoom component；Barrel (100) is further fixedly arranged on and movement parts
(120) the ultrasound-driven component (130) connected, ultrasound-driven component (130) drive motion part (120) are slided along guide rail (110).
2. the varifocal optical system of Driven by Ultrasonic Motors according to claim 1, it is characterised in that：The ultrasound-driven portion
Part (130) includes ultrasound electric machine ontology (131), and the rotor of ultrasound electric machine ontology (131) is connected with rotary shaft (132), rotary shaft
(132) the rotary shaft sliding block (140) that can be slided along rotary shaft (132), rotary shaft sliding block (140) and movement parts (120) are connected with
It is fixedly connected.
3. the varifocal optical system of Driven by Ultrasonic Motors according to claim 2, it is characterised in that：The rotary shaft
(132) outer surface is provided with screw thread, and the inner surface of rotary shaft sliding block (140) is also correspondingly provided with screw thread, rotary shaft (132) rotation
It is slided along rotary shaft (132) by screw drive rotary shaft sliding block (140) when turning.
4. the varifocal optical system of Driven by Ultrasonic Motors according to claim 2, it is characterised in that：The ultrasound-driven portion
Part (130) further includes the strip support plate (150) being fixedly connected with barrel (100), the length of support plate (150) and rotation
The length of axis (132) is suitable, and connects with the both ends of rotary shaft (132), and rotary shaft (132) both ends are fixed on support plate (150)
On rotated.
5. the varifocal optical system of Driven by Ultrasonic Motors according to claim 4, it is characterised in that：The support plate
(150) it is fixedly connected with barrel (100) by screw.
6. the varifocal optical system of Driven by Ultrasonic Motors according to claim 2, it is characterised in that：It further include strip
Guide rail slide block (160), guide rail slide block (160) are fixedly connected with movement parts (120), rotary shaft sliding block (140) and guide rail slide block
(160) it is fixedly connected, guide rail slide block (160) can slide on guide rail (110).
7. the varifocal optical system of Driven by Ultrasonic Motors according to claim 1, it is characterised in that：The guide rail (110)
Quantity is at least two.
8. the varifocal optical system of Driven by Ultrasonic Motors according to claim 1, it is characterised in that：The barrel
(100) include the first fixed cylinder (101) being mutually permanently connected and the second fixed cylinder (102), the first fixed cylinder (101) and second
Limit hole corresponding with guide rail (110) is both provided with inside fixed cylinder (102) to be fixedly connected after guide rail (110) is inserted into limit hole
First fixed cylinder (101) and the second fixed cylinder (102) keep guide rail (110) fixed relative to barrel (100).
9. the varifocal optical system of Driven by Ultrasonic Motors according to claim 8, it is characterised in that：First fixed cylinder
(101) it is fixedly connected with the second fixed cylinder (102) by screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810734232.8A CN108535831A (en) | 2018-07-06 | 2018-07-06 | The varifocal optical system of Driven by Ultrasonic Motors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810734232.8A CN108535831A (en) | 2018-07-06 | 2018-07-06 | The varifocal optical system of Driven by Ultrasonic Motors |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108535831A true CN108535831A (en) | 2018-09-14 |
Family
ID=63487678
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810734232.8A Pending CN108535831A (en) | 2018-07-06 | 2018-07-06 | The varifocal optical system of Driven by Ultrasonic Motors |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108535831A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113376793A (en) * | 2021-07-12 | 2021-09-10 | 南京航空航天大学 | Optical precision zooming system based on piezoelectric drive |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1890592A (en) * | 2003-12-09 | 2007-01-03 | 松下电器产业株式会社 | Lens driver, imaging device, lens barrel used in the imaging device, and camera body |
| CN2896329Y (en) * | 2006-04-19 | 2007-05-02 | 天津三星电机有限公司 | Automatic focusing device of hand-set pick-up lens |
| CN101390161A (en) * | 2006-02-27 | 2009-03-18 | 松下电器产业株式会社 | Optical pickup, optical disc drive and optical information device |
| CN101675369A (en) * | 2007-05-07 | 2010-03-17 | 松下电器产业株式会社 | Conversion lens and camera system using same |
| CN206533444U (en) * | 2017-02-13 | 2017-09-29 | 上饶市锦宏光学仪器有限公司 | Novel high-definition Penetrating Fog monitoring camera |
-
2018
- 2018-07-06 CN CN201810734232.8A patent/CN108535831A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1890592A (en) * | 2003-12-09 | 2007-01-03 | 松下电器产业株式会社 | Lens driver, imaging device, lens barrel used in the imaging device, and camera body |
| CN101390161A (en) * | 2006-02-27 | 2009-03-18 | 松下电器产业株式会社 | Optical pickup, optical disc drive and optical information device |
| CN2896329Y (en) * | 2006-04-19 | 2007-05-02 | 天津三星电机有限公司 | Automatic focusing device of hand-set pick-up lens |
| CN101675369A (en) * | 2007-05-07 | 2010-03-17 | 松下电器产业株式会社 | Conversion lens and camera system using same |
| CN206533444U (en) * | 2017-02-13 | 2017-09-29 | 上饶市锦宏光学仪器有限公司 | Novel high-definition Penetrating Fog monitoring camera |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113376793A (en) * | 2021-07-12 | 2021-09-10 | 南京航空航天大学 | Optical precision zooming system based on piezoelectric drive |
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