CN200944149Y - Compensating lens driving mechanism of zoom object lens - Google Patents
Compensating lens driving mechanism of zoom object lens Download PDFInfo
- Publication number
- CN200944149Y CN200944149Y CN200620019441.7U CN200620019441U CN200944149Y CN 200944149 Y CN200944149 Y CN 200944149Y CN 200620019441 U CN200620019441 U CN 200620019441U CN 200944149 Y CN200944149 Y CN 200944149Y
- Authority
- CN
- China
- Prior art keywords
- compensating glass
- driving lever
- driving mechanism
- deflector rod
- cylindrical surface
- 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.)
- Expired - Fee Related
Links
Images
Abstract
A compensating mirror driving mechanism of varifocal objective is provided, wherein the output axis of a micro direct current motor and the back end of a deflector rod are connected by a shaft joint; a spectacles frame provided with a varifocal compensating mirror is fixed on the machine foundation by a micro ball sliding guide; the deflector rod has a top with the cylindrical surface which is positioned in a runner formed by the runner board fixed on the side of the spectacles frame, and the difference between the tactical diameter phi of the cylindrical surface on the top of the deflector rod and the width L of the runner equals to the shift distance of run s of the lens on the guide. Because the each diameter on the cylindrical surface is equal, the rotation angle of the deflector rod can have bigger tolerance, easily assembly and debugging; because the pressure born by the cylindrical surface all passes the center of a circle, the mechanism is in the state of stable and equilibrious stress at D, E two points, and will not rotate with the thrust force of the compression spring, and the mechanism can credibly self locked; and because the driving distance of run of the deflector rod only needs rotating 180 degrees, using the 1.5 W micro motor with the decelerating gear can obtain enough rotation moment and shorter switching time, with the response speed less than 0.7 second.
Description
Technical field:
The utility model relates to the compensating glass driving mechanism of thermal imaging system zoom eyeglass driving mechanism, particularly a kind of varifocus objective.
Background technology:
Thermal imaging system is as a kind of photoelectronic imaging instrument, infrared objective is its important component part, generally adopt telephotolens in the present airborne forward sight thermal imaging system, adopt this object lens can be convenient to the pilot and regulate the multiplying power of looking in the distance, observe the target of far and near different distance with three visual fields.
Shown in Fig. 1, focusing lens 1 can be in A, B, three positions of C; Compensating glass 2 can be in two positions of D, E, and the diverse locations combination by two compensation eyeglasses can obtain different objective system focal lengths, thereby reach the conversion multiplying power of looking in the distance, and change the purpose of visual field subtended angle.Because optical system imaging relation is accurately corresponding with the position of these two eyeglasses, so switching between two positions of D, E, compensating glass must accurately locate, otherwise can not blur-free imaging; In addition, the motion of driving mechanism requires rapidly, and the zoom process will be incured loss through delay pilot's observation slowly, and this is unallowed; The 3rd, because the volume of product, weight must be in reasonable range, thereby, the design of the driving mechanism compactness of must trying one's best, miniaturization.
Traditional compensating glass eyeglass driving mechanism is cam mechanism or screw mechanism, but these two kinds of mechanisms relatively are applicable to the mechanism that slowly regulates continuously, are not suitable for motion switch between two fixed positions quickly and accurately.And their component part is many, is not easy to realize miniaturization.
Summary of the invention:
Deficiency at above-mentioned prior art existence, the utility model provides a kind of compensating glass driving mechanism of varifocus objective, the output shaft of DC micromotor and driving lever rear end connect by shaft coupling, the picture frame that the zoom compensating glass is housed is fixed on the support by the Miniature ball rail plate, driving lever has top, the face of cylinder, it is arranged in the chute of the coulisse formation that is fixed on the picture frame side, and the difference of the face of cylinder tactical diameter Φ on driving lever top and chute width L equals the shift motion s of eyeglass on guide rail.
The zoom eyeglass driving mechanism that the utility model proposes, the part that precision prescribed is high have adopted the face of cylinder and the straight trough structure that is easy to process, and are processing costs and all much lower than the cam or the screw mandrel part of processing equal accuracy to the requirement of equipment; Because equal diameters everywhere on the face of cylinder makes the driving lever rotational angle that bigger franchise can be arranged, and also can not influence bearing accuracy even the position of microswitch is inaccurate, easily assembling and setting; Because suffered pressure is all crossed the center of circle on the face of cylinder,, can not rotate reliably self-locking of mechanism because of the thrust of compression spring so that mechanism is in the stable equilibrium D, E at 2 is stressed; Because the driving stroke of driving lever only need rotate 180 °, utilize the 1.5W micromotor of being furnished with reduction gearing can obtain enough rotating torques and short switching time, response speed was less than 0.7 second.
Description of drawings
Fig. 1 is the varifocal optical system synoptic diagram of three visual field object lens in the prior art.
Fig. 2 is a structural representation of the present utility model.
Fig. 3 is the driving lever part profile synoptic diagram in the utility model.
Fig. 4 is that the A of Fig. 2 is to view.
Fig. 5 is the vertical view of Fig. 4.
Embodiment
Be to drive the driving lever slide way mechanism that compensating glass slides in 2 positions of D, E shown in Fig. 2-5: the output shaft of DC micromotor 8 and driving lever 4 connect by shaft coupling 9 among the figure, support with pedestal 10 and bearing 12; The plane boss is arranged on the cross section of shaft coupling 9, and when driving lever rotated 180 °, the boss of shaft joint can be run into microswitch 11, the control circuit that links to each other through power lead 13 according to the state of microswitch determine the start-stop of motor 8 and supplier of electricity to.
The picture frame of zoom compensating glass 2 is fixed on the Miniature ball rail plate 6 and can slides along the axis direction of compensating glass 2, and its stroke two ends are spacing by the compression spring 3 that interts on zoom compensating glass picture frame.
Coulisse 5 is screwed in the picture frame side, and the driving lever top is embedded in the chute, and the driving lever tip designs is a cylinder surface of contact mentioned above.Entire mechanism is fixed on the support 7, and is whole and be assembly parts, and structure is very compact.
When driving lever 4 turns near horizontal level, the face of cylinder of driving lever and chute contacts side surfaces, the bearing accuracy of compensating glass 2 is determined by face of cylinder diameter and two dimensional accuracies of chute width L.For eliminating the gap between driving lever and the chute, at the two ends of stroke compression spring 3 is arranged, the spring restoring force keeps in touch driving lever end face and chute.
Claims (5)
1, a kind of compensating glass driving mechanism of varifocus objective, comprise direct current generator, the zoom compensating glass, shaft coupling, driving lever, compression spring, microswitch and control circuit, it is characterized in that: the output shaft of DC micromotor (8) and driving lever (4) rear end connect by shaft coupling (9), the picture frame that zoom compensating glass (2) is housed is fixed on the support (7) by Miniature ball rail plate (6), the top, the face of cylinder of driving lever is arranged in the chute of coulisse (5) formation that is fixed on the picture frame side, and the difference of the face of cylinder tactical diameter Φ on driving lever (4) top and chute width L equals the shift motion s of eyeglass on guide rail (6).
2, compensating glass driving mechanism as claimed in claim 1 is characterized in that: the top surface of contact of driving lever is the face of cylinder, the difference of face of cylinder diameter of phi and chute width L and the shift motion s that equals the zoom compensating glass.
3, compensating glass driving mechanism as claimed in claim 1 is characterized in that: can be fixed on the support by the Miniature ball rail plate along the zoom compensating glass picture frame that guide rail slides.
4, compensating glass driving mechanism as claimed in claim 1 is characterized in that: the DC micromotor that drives 180 ° of the forward and reverse rotations of driving lever detects and controls by two microswitches and control circuit and rotates oppositely.
5, compensating glass driving mechanism as claimed in claim 1 is characterized in that: driving lever supports with pedestal (10) and bearing (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200620019441.7U CN200944149Y (en) | 2006-04-14 | 2006-04-14 | Compensating lens driving mechanism of zoom object lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200620019441.7U CN200944149Y (en) | 2006-04-14 | 2006-04-14 | Compensating lens driving mechanism of zoom object lens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200944149Y true CN200944149Y (en) | 2007-09-05 |
Family
ID=38718785
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200620019441.7U Expired - Fee Related CN200944149Y (en) | 2006-04-14 | 2006-04-14 | Compensating lens driving mechanism of zoom object lens |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200944149Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102590991A (en) * | 2012-04-01 | 2012-07-18 | 昆明物理研究所 | U-shaped folded medium wave infrared 30-times continuous zooming optical system |
| CN104199162A (en) * | 2014-08-29 | 2014-12-10 | 成都科信达实业有限公司 | Vertex translation compensation driving assembly |
| CN110737077A (en) * | 2019-11-29 | 2020-01-31 | Oppo广东移动通信有限公司 | Optical lens and electronic device |
| CN110764232A (en) * | 2019-11-29 | 2020-02-07 | Oppo广东移动通信有限公司 | Optical lens and electronic device |
-
2006
- 2006-04-14 CN CN200620019441.7U patent/CN200944149Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102590991A (en) * | 2012-04-01 | 2012-07-18 | 昆明物理研究所 | U-shaped folded medium wave infrared 30-times continuous zooming optical system |
| CN102590991B (en) * | 2012-04-01 | 2013-10-30 | 昆明物理研究所 | U-shaped folded medium wave infrared 30-times continuous zooming optical system |
| CN104199162A (en) * | 2014-08-29 | 2014-12-10 | 成都科信达实业有限公司 | Vertex translation compensation driving assembly |
| CN110737077A (en) * | 2019-11-29 | 2020-01-31 | Oppo广东移动通信有限公司 | Optical lens and electronic device |
| CN110764232A (en) * | 2019-11-29 | 2020-02-07 | Oppo广东移动通信有限公司 | Optical lens and electronic device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1751602B1 (en) | Microscope system comprising arrangement for positioning of a platform | |
| CN107132635B (en) | High-precision reflecting mirror switching device | |
| CN200944149Y (en) | Compensating lens driving mechanism of zoom object lens | |
| CN102798954A (en) | Five-dimensional adjusting rack | |
| CN108681024B (en) | Moving target surface focusing mechanism and target surface inclination amount and visual axis runout detection method thereof | |
| CN102436055B (en) | High-precision light focusing mechanism applied to space optical remote sensor | |
| CN108169872B (en) | High-precision and high-stability reflector adjusting device based on flexible hinge | |
| CN209728304U (en) | A kind of infrared double-view field switching mechanism of missile-borne | |
| CN107728284B (en) | Zooming mechanism for switching two view fields of infrared optical imaging system | |
| WO2007135854A1 (en) | Lens driving device and imaging device | |
| CN102540391A (en) | Precision focusing mechanism taking linear motor and grating rulers as servo elements | |
| CN102540442A (en) | Plane parallel three-degree-of-freedom precise operating platform | |
| CN111123507B (en) | Synchronous scanning rotating double-prism device and one-dimensional scanning method thereof | |
| CN102218734A (en) | Double parallel four-bar two-dimensional rotating parallel mechanism with virtual moving center | |
| CN104483743A (en) | Direct drive type precise micro displacement actuator for polar environment | |
| CN106774443B (en) | A kind of spaceborne novel high-precision high stability two-dimensional pointing mechanism | |
| CN202159178U (en) | Microscope | |
| CN108234864A (en) | A kind of high stability minimizes thermal infrared imager visual field switching mechanism | |
| CN104076478B (en) | Space Object Detection lens focusing system | |
| CN112099183B (en) | PEEK-based ultra-light continuous zoom lens | |
| CN104049335B (en) | The precision micro-displacement actuator used under a kind of polar low-temperature environment | |
| CN105629423A (en) | High-precision five-dimension adjusting mechanism used for astronomical telescope secondary mirror | |
| CN208270833U (en) | A kind of moving-target face focus adjusting mechanism | |
| CN203365777U (en) | Piezoelectric ceramic linear motor focusing device applied for optical system | |
| CN204065532U (en) | Space Object Detection lens focusing system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Kunming North Infrared Technology Co., Ltd. Assignor: Kunming Inst. of Physics Contract record no.: 2010530000040 Denomination of utility model: Compensating lens driving mechanism of zoom object lens Granted publication date: 20070905 License type: Exclusive License Record date: 20100906 |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070905 Termination date: 20140414 |