CN110119017A - A kind of two grades of zoom lens control devices having focusing function and its control method - Google Patents
A kind of two grades of zoom lens control devices having focusing function and its control method Download PDFInfo
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- CN110119017A CN110119017A CN201910411872.XA CN201910411872A CN110119017A CN 110119017 A CN110119017 A CN 110119017A CN 201910411872 A CN201910411872 A CN 201910411872A CN 110119017 A CN110119017 A CN 110119017A
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- 230000003287 optical effect Effects 0.000 claims description 34
- 238000005266 casting Methods 0.000 claims description 23
- 230000033001 locomotion Effects 0.000 claims description 16
- 238000003384 imaging method Methods 0.000 claims description 13
- 230000000994 depressogenic effect Effects 0.000 claims description 12
- 238000012634 optical imaging Methods 0.000 claims description 9
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- 238000009738 saturating Methods 0.000 description 2
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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
- 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
- G02B7/09—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification adapted for automatic focusing or varying magnification
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Abstract
The invention discloses a kind of two grades of zoom lens control devices for having focusing function and its control methods.Lens subassembly is mounted in right sliding block linear guide and left slider linear guide, the flange installation nut of external drive formula linear stepping motor is mounted in the microscope group installation take-up housing nut mounting hole of lens subassembly, external drive formula linear stepping motor can drive lens subassembly to be moved forward and backward, and when lens subassembly is moved to focal length and short focus position, microswitch carries out position feedback.Structure of the invention is reasonable, simple, compact, and using two grades of zooms and focusing function are positioned while realized based on slider type linear guide, at low cost, easy to use, using microswitch as feedback so that control is simple, image quality is high.
Description
Technical field
The invention patent relates to a kind of two grades of zoom lens control devices, and in particular to a kind of to have tune based on slider type linear guide
The two grades of zoom lens control devices and its control method of burnt function.
Background technique
Two grades of zoom lens control devices refer to be mounted in optical imaging apparatus using optical system Infrared Lens group movement so that
The Optical devices that the combined focal length of optical system carries out focal length and two grades of short focus switchings change, the two grades of zooms dress developed at present
It sets generally using mechanisms such as cam, connecting rods, processing is complicated, assembly difficulty, and device is difficult to using same group of movement mechanism
In the case of simultaneously realize optical system zoom Infrared Lens group focusing function under different temperatures, structure is cumbersome, volume is big, Wu Faan
In the close mechanical-optical setup for being equipped with volumetric constraint to two grades of zoom lens control devices, and device quality is big, at high cost.
Summary of the invention
It is an object of the invention to overcome existing disadvantage, provide a kind of compact-sized, control it is simple, at low cost based on
The two grades of zoom lens control devices for having focusing function and its control method of slider type linear guide are suitable for two grades of zooms of various needs
Optical imaging apparatus, zoom accuracy is high and may be implemented self-locking under high vibration environment, can be realized simultaneously under different temperatures
Equipment focusing function, the mature marketization that is more suitable uses and scientific research uses, and realizes two grades of varifocal imaging high quality of high-precision
Demand.
In order to achieve the above objectives, the present invention adopts the following technical solutions:
A kind of two grades of zoom lens control devices having focusing function, including base assembly 1, lens subassembly 2；It is characterized by:
The base assembly 1 includes pedestal 1-1, right sliding block linear guide 1-2, left slider linear guide 1-3, motor peace
Limit base 1-4, external drive formula linear stepping motor 1-5, preceding microswitch mounting base 1-6, preceding microswitch 1-7 are filled, it is rear micro-
Dynamic switch installation seat 1-8, rear microswitch 1-9, left limit part 1-10, right limit part 1-11；Its structure are as follows: the pedestal 1-
1 upper end is the two coplanar guide rail mounting surfaces in left and right, and the guide rail of the right sliding block linear guide 1-2 is fixedly mounted by screw
On the right guide rail mounting surface of pedestal 1-1, the guide rail of the left slider linear guide 1-3 is fixedly mounted on pedestal 1- by screw
On 1 left rail mounting surface；The motor installation limit base 1-4 is fixedly connected by screw with pedestal 1-1 front end face, described
Flange installation nut, external drive formula linear stepping motor are set on the screw axis of external drive formula linear stepping motor 1-5
1-5 installs limit base 1-4 with motor by screw and is fixedly connected；The preceding microswitch mounting base 1-6 is fixed by screw
It is mounted on pedestal 1-1 right front, the preceding microswitch 1-7 connects by the way that screw and preceding microswitch mounting base 1-6 are fixed
It connects；The rear microswitch mounting base 1-8 is fixedly mounted on pedestal 1-1 left back by screw, and the rear fine motion is opened
1-9 is closed to be fixedly connected by screw with rear microswitch mounting base 1-8；The left limit part 1-10 passes through screw and pedestal 1-
1 left side rear end face is fixedly connected, and the right limit part 1-11 is fixedly connected by screw with rear end face on the right side of pedestal 1-1.
The lens subassembly 2 includes that microscope group installs take-up housing 2-1, variable focus lens package 2-2, right microswitch casting die 2-3,
Left microswitch casting die 2-4；Its structure are as follows: there is nut mounting hole at the microscope group installation center take-up housing 2-1, and lower end is left and right
Two coplanar sliding block mounting surfaces；Optical zoom eyeglass, variable focus lens package are installed in the variable focus lens package 2-2 centre bore
2-2 is fixedly mounted on microscope group by screw and installs in the mounting groove of the upper end take-up housing 2-1；The right microswitch casting die 2-3 is logical
It crosses screw to be fixedly mounted on the right side of microscope group installation take-up housing 2-1, the left microswitch casting die 2-4 is fixedly mounted by screw
On the left of microscope group installation take-up housing 2-1.
The microscope group installation right sliding block mounting surface of take-up housing 2-1 of the lens subassembly 2 passes through screw and the pedestal group
The sliding block of the right sliding block linear guide 1-2 of part 1 is fixedly connected, and the microscope group of the lens subassembly 2 installs take-up housing 2-1 left slider
Mounting surface is fixedly connected by screw with the sliding block of the left slider linear guide 1-3 of the base assembly 1, the pedestal group
The flange installation nut of the external drive formula linear stepping motor 1-5 of part 1 is fixedly mounted on the lens subassembly 2 by screw
Microscope group installation take-up housing 2-1 nut mounting hole in；The external drive formula linear stepping motor 1-5 of base assembly 1 can drive
Move the lens subassembly 2, the base assembly 1 right sliding block linear guide 1-2 sliding block and the base assembly 1
The sliding block of left slider linear guide 1-3 is moved forward and backward, when the variable focus lens package 2-2 of the lens subassembly 2 be moved to optics at
As equipment optical system focal length position when, the right microswitch casting die 2-3 of the lens subassembly 2 and the base assembly
1 preceding microswitch 1-7 contact, preceding microswitch 1-7 contact are depressed；When the variable focus lens package 2-2 of lens subassembly 2 is moved to
When the short focus position of optical imaging apparatus optical system, the left microswitch casting die 2-4 of the lens subassembly 2 and the bottom
The rear microswitch 1-9 of holder assembly 1 is contacted, and rear microswitch 1-9 contact is depressed.
The present invention also provides a kind of control methods of two grades of zoom lens control devices for having focusing function, and this method includes following
Step:
1) the external drive formula linear stepping motor 1-5 of the starting base assembly 1, is walked by external drive formula straight line
Flange into motor 1-5 installs the transmission of nut so that the lens subassembly 2 travels forward, when the lens subassembly 2
When the motor installation limit base 1-4 of microscope group installation take-up housing 2-1 front end face and the base assembly 1 is contacted, lens subassembly 2 is transported
Dynamic to stop, external drive formula linear stepping motor 1-5 stall, operating current becomes larger, and stops external drive in a short time at this time
Formula linear stepping motor 1-5 driving, and the position for recording lens subassembly 2 at this time is initial position；
2) the external drive formula linear stepping motor 1-5 of the starting base assembly 1, drives the lens subassembly 2
It moves backward, as the right microswitch casting die 2-3 of the lens subassembly 2 and preceding microswitch 1-7 of the base assembly 1
When contact, preceding microswitch 1-7 contact is depressed, and preceding microswitch 1-7 sends electric signal, stops external drive formula straight line at this time
Stepper motor 1-5 driving, the variable focus lens package 2-2 of the lens subassembly 2 are in focal length position, and optical system can be grown
Coke imaging；
3) when making optical system focal plane position change due to temperature change in focal length imaging process, start described
The external drive formula linear stepping motor 1-5 of base assembly 1, drives the lens subassembly 2 to move forward and backward, so that optical system
Focal plane returns to the position before temperature changes, and realizes that focusing function is imaged in focal length；
4) the external drive formula linear stepping motor 1-5 of the starting base assembly 1, drives the lens subassembly 2
It moves backward, as the left microswitch casting die 2-4 of the lens subassembly 2 and after microswitch 1-9 of the base assembly 1
When contact, rear microswitch 1-9 contact is depressed, and rear microswitch 1-9 sends electric signal, stops external drive formula straight line at this time
Stepper motor 1-5 driving, the variable focus lens package 2-2 of the lens subassembly 2 are in short focus position, and optical system can carry out short
Coke imaging；
5) when making optical system focal plane position change due to temperature change in short focus imaging process, start described
The external drive formula linear stepping motor 1-5 of base assembly 1, drives the lens subassembly 2 to move forward and backward, so that optical system
Focal plane returns to the position before temperature changes, and realizes that focusing function is imaged in short focus；
6) repeating step 1)~step 5) can be realized the switching of two grades of zooms and focusing function of zoom lens control device.
The two grades of zoom lens control devices for originally having focusing function for installing focus-variable lens are mounted on optical imagery by screw
Equipment optical system zoom position is moved according to the lens subassembly 2 that control method provided by the invention controls two grades of zoom lens control devices
Two grades of zoom switchings and focusing function can be realized, the motor of the base assembly 1 installs limit base 1- during the motion
4, left limit part 1-10 and right limit part 1-11 will carry out mechanical position limitation to the movement of the lens subassembly 2, avoid lens group
The movement of part 2 exceeds predetermined stroke.
The present invention has the advantage that structure of the invention is reasonable, simple, compact, high reliablity, manufacture is easy, installation letter
Just, at low cost using based on slider type linear guide positioning realization two grades of zooms and focusing function simultaneously, it is easy to use, it is suitable for
The various optical imaging apparatus for needing to focus under two grades of zooms and different temperatures use, using microswitch as feedback so that control
System is simple, and due to being used as driving that complexity may be implemented using the external drive formula linear stepping motor with ball wire rod mechanism
Mechanism under vibration environment is self-locking, and image quality is high.
Detailed description of the invention
Fig. 1 is the general structure schematic diagram of one embodiment of the present of invention.
Fig. 2 is the general structure schematic diagram of the base assembly 1 of one embodiment of the present of invention.
Fig. 3 is the general structure schematic diagram of the lens subassembly 2 of one embodiment of the present of invention.
Fig. 4 is the general structure schematic diagram under one embodiment of the present of invention focal length state.
Fig. 5 is the general structure schematic diagram under one embodiment of the present of invention short focus state.
Specific embodiment
A preferable embodiment of the invention is provided with reference to the accompanying drawing, is mainly described in further detail spy of the invention
Point, rather than range for the purpose of limiting the invention:
Referring to Fig. 1, originally have two grades of zoom lens control devices of focusing function, including base assembly 1, lens subassembly 2；Its feature exists
In:
Referring to fig. 2, base assembly 1 includes pedestal 1-1, right sliding block linear guide 1-2, left slider linear guide 1-3, motor
Limit base 1-4, external drive formula linear stepping motor 1-5, preceding microswitch mounting base 1-6, preceding microswitch 1-7 are installed, after
Microswitch mounting base 1-8, rear microswitch 1-9, left limit part 1-10, right limit part 1-11；Its structure are as follows: on pedestal 1-1
End is the two coplanar guide rail mounting surfaces in left and right, and the guide rail of right sliding block linear guide 1-2 is fixedly mounted on pedestal 1-1 by screw
On right guide rail mounting surface, the guide rail of left slider linear guide 1-3 is fixedly mounted on pedestal 1-1 left rail mounting surface by screw
On；Motor installation limit base 1-4 is fixedly connected by screw with pedestal 1-1 front end face, external drive formula linear stepping motor 1-5
Screw axis on be set with flange installation nut, external drive formula linear stepping motor 1-5 by screw and motor installation limit
Seat 1-4 is fixedly connected；Preceding microswitch mounting base 1-6 is fixedly mounted on pedestal 1-1 right front, preceding microswitch by screw
1-7 is fixedly connected by screw with preceding microswitch mounting base 1-6；Microswitch mounting base 1-8 is fixedly mounted by screw afterwards
In pedestal 1-1 left back, rear microswitch 1-9 is fixedly connected by screw with rear microswitch mounting base 1-8；Left limit part
1-10 is fixedly connected by screw with rear end face on the left of pedestal 1-1, and right limit part 1-11 passes through rear end on the right side of screw and pedestal 1-1
Face is fixedly connected.
Referring to Fig. 3, lens subassembly 2 includes that microscope group installs take-up housing 2-1, variable focus lens package 2-2, right microswitch casting die 2-
3, left microswitch casting die 2-4；Its structure are as follows: there is nut mounting hole at the microscope group installation center take-up housing 2-1, and lower end is left and right two
Coplanar sliding block mounting surface；Optical zoom eyeglass is installed, variable focus lens package 2-2 passes through spiral shell in variable focus lens package 2-2 centre bore
Nail is fixedly mounted in the microscope group installation upper end take-up housing 2-1 mounting groove；Right microswitch casting die 2-3 is fixedly mounted on by screw
Microscope group is installed on the right side of take-up housing 2-1, and left microswitch casting die 2-4 is fixedly mounted on microscope group by screw and installs the left side take-up housing 2-1
Side.
The microscope group installation right sliding block mounting surface of take-up housing 2-1 of lens subassembly 2 is straight by the right sliding block of screw and base assembly 1
The sliding block of line guide rail 1-2 is fixedly connected, and the microscope group installation take-up housing 2-1 left slider mounting surface of lens subassembly 2 passes through screw and bottom
The sliding block of the left slider linear guide 1-3 of holder assembly 1 is fixedly connected, the external drive formula linear stepping motor 1-5 of base assembly 1
Flange installation nut by screw be fixedly mounted on lens subassembly 2 microscope group installation take-up housing 2-1 nut mounting hole in；Bottom
The external drive formula linear stepping motor 1-5 of holder assembly 1 can drive the right sliding block linear guide of lens subassembly 2, base assembly 1
The sliding block of the left slider linear guide 1-3 of the sliding block and base assembly 1 of 1-2 is moved forward and backward, when the variable focus lens package of lens subassembly 2
When 2-2 is moved to the focal length position of optical imaging apparatus optical system, the right microswitch casting die 2-3 and pedestal of lens subassembly 2
The preceding microswitch 1-7 of component 1 is contacted, and preceding microswitch 1-7 contact is depressed；When the variable focus lens package 2-2 of lens subassembly 2 is moved
When moving the short focus position of optical imaging apparatus optical system, the left microswitch casting die 2-4 and base assembly 1 of lens subassembly 2
Rear microswitch 1-9 contact, rear microswitch 1-9 contact is depressed.
Referring to fig. 4 and Fig. 5, the present invention also provides a kind of control method of two grades of zoom lens control devices for having focusing function,
Method includes the following steps:
1) the external drive formula linear stepping motor 1-5 for starting base assembly 1, passes through external drive formula linear stepping motor
The transmission of the flange installation nut of 1-5 is so that lens subassembly 2 travels forward, before the microscope group of lens subassembly 2 installs take-up housing 2-1
When the motor of end face and base assembly 1 installation limit base 1-4 is contacted, the movement of lens subassembly 2 stops, external drive formula straight line stepping
Motor 1-5 stall, operating current become larger, and stop external drive formula linear stepping motor 1-5 driving in a short time at this time, and remember
The position for recording lens subassembly 2 at this time is initial position；
2) start the external drive formula linear stepping motor 1-5 of base assembly 1, driving lens subassembly 2 moves backward, when saturating
When the right microswitch casting die 2-3 of mirror assembly 2 and the preceding microswitch 1-7 of base assembly 1 are contacted, preceding microswitch 1-7 contact
It is depressed, preceding microswitch 1-7 sends electric signal, stops external drive formula linear stepping motor 1-5 driving, lens subassembly at this time
2 variable focus lens package 2-2 is in focal length position, and optical system can carry out focal length imaging；
3) when making optical system focal plane position change due to temperature change in focal length imaging process, start pedestal group
The external drive formula linear stepping motor 1-5 of part 1, driving lens subassembly 2 moves forward and backward, so that optical system focal plane returns to temperature
Position before degree change realizes that focusing function is imaged in focal length；
4) start the external drive formula linear stepping motor 1-5 of base assembly 1, driving lens subassembly 2 moves backward, when saturating
When the left microswitch casting die 2-4 of mirror assembly 2 and the rear microswitch 1-9 of base assembly 1 are contacted, rear microswitch 1-9 contact
It is depressed, rear microswitch 1-9 sends electric signal, stops external drive formula linear stepping motor 1-5 driving, lens subassembly at this time
2 variable focus lens package 2-2 is in short focus position, and optical system can carry out short focus imaging；
5) when making optical system focal plane position change due to temperature change in short focus imaging process, start pedestal group
The external drive formula linear stepping motor 1-5 of part 1, driving lens subassembly 2 moves forward and backward, so that optical system focal plane returns to temperature
Position before degree change realizes that focusing function is imaged in short focus；
6) repeating step 1)~step 5) can be realized the switching of two grades of zooms and focusing function of zoom lens control device.
Embodiment motion flow: the two grades of zoom lens control devices for originally having focusing function for installing focus-variable lens are passed through into screw
It is mounted on optical imaging apparatus optical system zoom position, controls two grades of zoom lens control devices according to control method provided by the invention
Two grades of zoom switchings and focusing function can be realized in the movement of lens subassembly 2, and the motor of base assembly 1 installs limit during the motion
Position seat 1-4, left limit part 1-10 and right limit part 1-11 will carry out mechanical position limitation to the movement of lens subassembly 2, avoid lens group
The movement of part 2 exceeds predetermined stroke.
Claims (2)
1. a kind of two grades of zoom lens control devices for having focusing function, including base assembly (1), lens subassembly (2)；It is characterized by:
The base assembly (1) includes pedestal (1-1), right sliding block linear guide (1-2), left slider linear guide (1-3), electricity
Machine installs limit base (1-4), external drive formula linear stepping motor (1-5), preceding microswitch mounting base (1-6), and preceding fine motion is opened
It closes (1-7), rear microswitch mounting base (1-8), rear microswitch (1-9), left limit part (1-10), right limit part (1-11)；
Its structure are as follows: described upper end pedestal (1-1) is the two coplanar guide rail mounting surfaces in left and right, the right sliding block linear guide
The guide rail of (1-2) is fixedly mounted on the right guide rail mounting surface of pedestal (1-1) by screw, the left slider linear guide (1-
3) guide rail is fixedly mounted on pedestal (1-1) left rail mounting surface by screw；Motor installation limit base (1-4) is logical
It crosses screw to be fixedly connected with pedestal (1-1) front end face, be covered on the screw axis of the external drive formula linear stepping motor (1-5)
Nut is installed equipped with flange, external drive formula linear stepping motor (1-5) is fixed by screw and motor installation limit base (1-4)
Connection；The preceding microswitch mounting base (1-6) is fixedly mounted on pedestal (1-1) right front by screw, before described
Microswitch (1-7) is fixedly connected by screw with preceding microswitch mounting base (1-6)；The rear microswitch mounting base
(1-8) is fixedly mounted on pedestal (1-1) left back by screw, the rear microswitch (1-9) by screw with it is rear micro-
Dynamic switch installation seat (1-8) is fixedly connected；The left limit part (1-10) is solid by rear end face on the left of screw and pedestal (1-1)
Fixed connection, the right limit part (1-11) are fixedly connected by screw with rear end face on the right side of pedestal (1-1)；
The lens subassembly (2) includes microscope group installation take-up housing (2-1), variable focus lens package (2-2), right microswitch casting die
(2-3), left microswitch casting die (2-4)；Its structure are as follows: there is nut mounting hole at described microscope group installation center take-up housing (2-1),
Lower end is the two coplanar sliding block mounting surfaces in left and right；Optical zoom mirror is installed in described variable focus lens package (2-2) centre bore
Piece, variable focus lens package (2-2) are fixedly mounted on microscope group by screw and install in the mounting groove of the upper end take-up housing (2-1)；The right side
Microswitch casting die (2-3) is fixedly mounted on the right side of microscope group installation take-up housing (2-1) by screw, the left microswitch pressure
Part (2-4) is fixedly mounted on the left of microscope group installation take-up housing (2-1) by screw；
Microscope group installation take-up housing (2-1) right sliding block mounting surface of the lens subassembly (2) passes through screw and the pedestal group
The sliding block of the right sliding block linear guide (1-2) of part (1) is fixedly connected, and the microscope group of the lens subassembly (2) installs take-up housing (2-
1) left slider mounting surface is fixedly connected by screw with the sliding block of the left slider linear guide (1-3) of the base assembly (1),
The flange installation nut of the external drive formula linear stepping motor (1-5) of the base assembly (1) is fixedly mounted by screw
In the nut mounting hole of microscope group installation take-up housing (2-1) of the lens subassembly (2)；The external drive of base assembly (1)
Formula linear stepping motor (1-5) can drive the right sliding block straight line of the lens subassembly (2), the base assembly (1) to lead
The sliding block of the left slider linear guide (1-3) of the sliding block and base assembly (1) of rail (1-2) is moved forward and backward, when described
When the variable focus lens package (2-2) of lens subassembly (2) is moved to the focal length position of optical imaging apparatus optical system, the lens
The right microswitch casting die (2-3) of component (2) contacts with the preceding microswitch (1-7) of the base assembly (1), and preceding fine motion is opened
(1-7) contact is closed to be depressed；When the variable focus lens package (2-2) of lens subassembly (2) is moved to optical imaging apparatus optical system
When short focus position, the rear fine motion of the left microswitch casting die (2-4) of the lens subassembly (2) and the base assembly (1)
(1-9) contact is switched, rear microswitch (1-9) contact is depressed.
2. a kind of control method based on two grades of zoom lens control devices described in claim 1 for having focusing function, which is characterized in that
The following steps are included:
1) the external drive formula linear stepping motor (1-5) of the starting base assembly (1), is walked by external drive formula straight line
Flange into motor (1-5) installs the transmission of nut so that the lens subassembly (2) travels forward, when the lens subassembly
(2) when motor installation limit base (1-4) of microscope group installation take-up housing (2-1) front end face and the base assembly (1) contacts,
Lens subassembly (2) movement stops, and external drive formula linear stepping motor (1-5) stall, operating current becomes larger, at this time in the short time
Interior stopping external drive formula linear stepping motor (1-5) driving, and the position for recording lens subassembly (2) at this time is initial position；
2) the external drive formula linear stepping motor (1-5) of the starting base assembly (1), drives the lens subassembly
(2) move backward, when the lens subassembly (2) right microswitch casting die (2-3) and the base assembly (1) it is preceding micro-
When dynamic switch (1-7) contact, preceding microswitch (1-7) contact is depressed, and preceding microswitch (1-7) sends electric signal, stops at this time
Only external drive formula linear stepping motor (1-5) drives, and the variable focus lens package (2-2) of the lens subassembly (2) is in focal length
Position, optical system can carry out focal length imaging；
3) when making optical system focal plane position change due to temperature change in focal length imaging process, start the pedestal
The external drive formula linear stepping motor (1-5) of component (1), drives the lens subassembly (2) to move forward and backward, so that optical system
System focal plane returns to the position before temperature changes, and realizes that focusing function is imaged in focal length；
4) the external drive formula linear stepping motor (1-5) of the starting base assembly (1), drives the lens subassembly
(2) move backward, when the lens subassembly (2) left microswitch casting die (2-4) and the base assembly (1) after it is micro-
When dynamic switch (1-9) contact, rear microswitch (1-9) contact is depressed, and rear microswitch (1-9) sends electric signal, stops at this time
Only external drive formula linear stepping motor (1-5) drives, and the variable focus lens package (2-2) of the lens subassembly (2) is in short focus
Position, optical system can carry out short focus imaging；
5) when making optical system focal plane position change due to temperature change in short focus imaging process, start the pedestal
The external drive formula linear stepping motor (1-5) of component (1), drives the lens subassembly (2) to move forward and backward, so that optical system
System focal plane returns to the position before temperature changes, and realizes that focusing function is imaged in short focus；
6) repeating step 1)~step 5) can be realized the switching of two grades of zooms and focusing function of zoom lens control device.
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| CN201910411872.XA CN110119017A (en) | 2019-05-17 | 2019-05-17 | A kind of two grades of zoom lens control devices having focusing function and its control method |
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| CN201910411872.XA CN110119017A (en) | 2019-05-17 | 2019-05-17 | A kind of two grades of zoom lens control devices having focusing function and its control method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110727077A (en) * | 2019-10-09 | 2020-01-24 | 中国航空工业集团公司洛阳电光设备研究所 | Centroid driving focusing mechanism based on flexible hinge |
| CN111929796A (en) * | 2020-08-19 | 2020-11-13 | 青岛澳瑞德电子有限公司 | Light path adjusting structure with variable light spots |
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