CN106154522B - The big target surface double-view field zoom lens of LONG WAVE INFRARED and its Zooming method - Google Patents
The big target surface double-view field zoom lens of LONG WAVE INFRARED and its Zooming method Download PDFInfo
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- CN106154522B CN106154522B CN201610699315.9A CN201610699315A CN106154522B CN 106154522 B CN106154522 B CN 106154522B CN 201610699315 A CN201610699315 A CN 201610699315A CN 106154522 B CN106154522 B CN 106154522B
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B15/00—Optical objectives with means for varying the magnification
- G02B15/14—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective
- G02B15/16—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective with interdependent non-linearly related movements between one lens or lens group, and another lens or lens group
- G02B15/163—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective with interdependent non-linearly related movements between one lens or lens group, and another lens or lens group having a first movable lens or lens group and a second movable lens or lens group, both in front of a fixed lens or lens group
- G02B15/167—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective with interdependent non-linearly related movements between one lens or lens group, and another lens or lens group having a first movable lens or lens group and a second movable lens or lens group, both in front of a fixed lens or lens group having an additional fixed front lens or group of lenses
- G02B15/173—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective with interdependent non-linearly related movements between one lens or lens group, and another lens or lens group having a first movable lens or lens group and a second movable lens or lens group, both in front of a fixed lens or lens group having an additional fixed front lens or group of lenses arranged +-+
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B15/00—Optical objectives with means for varying the magnification
- G02B15/14—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective
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Abstract
The present invention relates to a kind of big target surface double-view field zoom lens of LONG WAVE INFRARED, along light, incident direction is equipped with preceding fixed group A, zoom group B, rear fixed group C successively from left to right in the optical system of the camera lens, and it includes the first positive meniscus lens A 1 that group A is fixed before described；The zoom group B includes double-concave negative lens B 1；Fixed group C includes the biconvex positive lens C 1 set gradually from left to right, the second positive meniscus lens C 2, third positive meniscus lens C 3 after described.The optical system structure of the big target surface double-view field zoom lens of the LONG WAVE INFRARED is simple, and lens construction length is short, small easy to carry, has many advantages, such as compact-sized, big target surface, high-resolution.
Description
Technical field
The present invention relates to a kind of big target surface double-view field zoom lens of LONG WAVE INFRARED and its Zooming methods, are related to optical technology
Field.
Background technology
Infrared lens have strong antijamming capability, can the work of round-the-clock round-the-clock, penetrate flue dust and haze ability is strong etc. excellent
Point.With the fast development of infrared imagery technique, there is urgent answer in the fields such as safety monitoring to infrared variable focal length optical system
Use demand.But existing infrared zoomlens area of bed is bigger than normal, inconvenient to carry, target surface is small, long short focus selection is unreasonable,
Picture quality is bad, limited to the search and recognition capability of infrared target, limits its scope of application.
Invention content
The purpose of the present invention is being directed to the above shortcoming, a kind of big target surface double vision of LONG WAVE INFRARED simple in structure is provided
Field zoom lens and its Zooming method.
The technical scheme is that a kind of big target surface double-view field zoom lens of LONG WAVE INFRARED, the optics of the camera lens
Along light, incident direction is equipped with preceding fixed group A, zoom group B, rear fixed group C successively from left to right in system, and group A is fixed before described
Including the first positive meniscus lens A-1；The zoom group B includes double-concave negative lens B-1；Fixed group C includes from left to right after described
Biconvex positive lens C-1, the second positive meniscus lens C-2, the third positive meniscus lens C-3 set gradually.
Further, the airspace of short focus is 18.01mm, the air of focal length between the preceding fixed group A and zoom group B
Between be divided into 43.88mm, the airspace of short focus is 43.23mm between the zoom group B and rear fixed group C, between the air of focal length
It is divided into 17.36mm.
Further, the airspace between the biconvex positive lens C-1 and the second positive meniscus lens C-2 is 22.71mm,
Airspace between the second positive meniscus lens C-2 and third positive meniscus lens C-3 is 42.32mm.
Further, the mechanical structure of the camera lens includes the zoom set gradually from left to right along the incident direction of light
Component, focusing component, light bar component, correction component, the zoom group B are set in zoom component.
Further, the mechanical structure of the camera lens further includes body tube, and the zoom component includes being located in body tube
The zoom balladeur train in portion, the zoom balladeur train are fixedly provided with zoom lens barrel；The zoom balladeur train with body tube grinding by matching
It closes and is mounted on body tube, the external posterior segment of the body tube is equipped with zoom cam, and the zoom cam is placed in by steel ball
On body tube, to form rolling bearing, and locked through cam trim ring；It offers on the zoom cam and is moved by optical zoom
The zoom curved groove of the requirement processing of equation, the zoom cam link together with zoom balladeur train through zoom guide pin component；Institute
The outside for stating body tube is equipped with zoom electric machine assembly, and the zoom electric machine assembly includes zoom motor and microswitch component, micro-
Dynamic switch dials nail, and the zoom motor is mounted on by zoom electric machine support and zoom motor column on body tube；The zoom
It is connected with zoom motor gear on the output shaft of motor, the zoom cam tooth of annular is bolted on the rear end face of the zoom cam
Wheel, the zoom motor gear are engaged with zoom cam wheel, and the body tube is equipped with to limit zoom guide pin component
Straight trough A, the interior forward end of the body tube are bolted with preceding group lens barrel, and fixed group A is mounted in preceding group lens barrel before described, and described the
The front end of one positive meniscus lens A-1 is equipped with preceding group of trim ring, and the zoom group B is mounted in zoom lens barrel, the double-concave negative lens
The front end of B-1 is equipped with zoom trim ring, is opened up on the zoom balladeur train there are two gas vent, the inside of zoom balladeur train front end is empty
Gas is connected through gas vent with the inner air of rear end.
Further, it is equipped between the front end and the outer surface of body tube of the zoom cam for ensuring that focal length positioning is accurate
Really with stable focal length detent mechanism, the focal length detent mechanism includes positioning seat, along zoom cam on the positioning seat
Direction of rotation offers straight trough mouth, and the positioning seat is screwed onto the outer surface of body tube through being inserted into the screw of straight trough mouth, described fixed
The radial axis hole that positioning seat is run through in end is offered on the seat of position, the end of the radial direction axis hole is embedded there are one steel ball, the steel
Pearl coordinates with radial axle interporal lacuna, and the top of the steel ball is equipped with the pressing plate being embedded in radial axis hole, and the pressing plate is through pressing plate
The spring compression at top on the top of steel ball, the external peripheral surface edge of zoom cam front end in offering several positioning
Slot, the steel ball are embedded at locating slot or are pressed on external peripheral surface, and spring positioning axis, institute are inserted in the middle part of the spring
The top for stating radial axis hole is equipped with spring pressuring ring.
Further, the focusing component includes rear group lens barrel, and the rear group lens barrel is bolted on the rear end face of body tube,
The front end of the rear group lens barrel is stretched into along the rear end of body tube inside body tube, and the biconvex positive lens C-1 is mounted on through trim ring A
The front end of rear group lens barrel, the second positive meniscus lens C-2 are mounted on the middle part of rear group lens barrel, the rear group lens barrel through trim ring B
Interior rear end be equipped with focusing drawtube, the third positive meniscus lens C-3 be mounted on focusing drawtube on, the focusing drawtube by with
Rear group lens barrel grinding is fitted in rear group lens barrel, and the external posterior segment of the rear group lens barrel is equipped with focusing cam, the tune
Burnt cam coaxial is sheathed in rear group lens barrel, and is locked through focusing cam trim ring；It offers on the focusing cam and becomes by optics
The focusing curve slot of the requirement processing of the burnt equation of motion, the focusing cam are connected to one with focusing drawtube through focusing cam guide pin
It rises；The outside of the focusing drawtube is equipped with focusing electric machine assembly, and the focusing electric machine assembly includes focusing motor and microswitch
Component two, the focusing motor are mounted on by focus electric machine support and focusing motor column on focusing drawtube；The focusing electricity
Focusing motor gear is connected on the output shaft of machine, the periphery of the focusing cam is equipped with the focusing cam gear of annular, described
Focusing motor gear is engaged with focusing cam gear, and the focusing drawtube is equipped with to limit the straight trough B of focusing cam guide pin.
Further, the correction component includes the correction cabin that the rear end face through sunk screw and rear group lens barrel is spirally connected, institute
The inside for stating correction cabin is hinged with a correcting plate, and the shape of the correcting plate is sector, and the circle centre position of the correcting plate is hinged on
The interior bottom in cabin is corrected, the correction component further includes correcting motor, is connected with positioned at school on the output shaft of the correcting motor
Correcting motor gear inside positive cabin, the correcting motor gear are engaged with an intermediate gear, the intermediate gear and correcting plate
Circular arc circumference on gear teeth meshing, driving correcting plate rotates around the center of circle, and the side of the center line of the correcting plate offers logical
Unthreaded hole, the correcting motor is mounted on by correcting motor holder and correcting motor column on correction cabin, described to correct the interior of cabin
Portion is additionally provided with position limited inching switch component, and the calibrated hatchway cover in the correction cabin is sealed, and the interior bottom for correcting cabin also is provided with
Light hole.
Further, the rear end of the correction hatchway cover is equipped with detector assembly.
A kind of Zooming method of the big target surface double-view field zoom lens of LONG WAVE INFRARED, includes the following steps：
（1）The rotor of zoom motor does positive and negative rotary motion, and zoom cam is driven to correspondingly rotate；
（2）Zoom curved groove and zoom guide pin component drive zoom balladeur train to be moved in the way of zoom curved groove, in straight trough
Under limitation, the rotary motion of zoom balladeur train becomes linear motion and carries out zoom.
Compared with prior art, the invention has the advantages that：（1）The big target surface double-view field varifocal of the LONG WAVE INFRARED
The optical system structure of camera lens is simple, and lens construction assembly is compact, length is short, small easy to carry, has compact-sized, big
The advantages that target surface, high-resolution.（2）The lens focus is 40mm-120mm, and it is 640*512, Pixel size that can match pixel number
For the big target surface detector of 17um.
Description of the drawings
Patent of the present invention is further illustrated below in conjunction with the accompanying drawings.
Optical system schematic diagram when Fig. 1 is the inventive embodiments short focus；
Optical system schematic diagram when Fig. 2 is the inventive embodiments focal length；
Fig. 3 is the mechanical structure schematic diagram of the inventive embodiments；
Fig. 4 is the structural schematic diagram one of the zoom component of the inventive embodiments；
Fig. 5 is the structural schematic diagram two of the zoom component of the inventive embodiments；
Fig. 6 is the structural schematic diagram one of focal length detent mechanism；
Fig. 7 is the structural schematic diagram two of focal length detent mechanism；
Fig. 8 is the structural schematic diagram three of focal length detent mechanism；
Fig. 9 is the working state schematic representation of focal length detent mechanism；
Figure 10 is the structural schematic diagram one of the focusing component of the inventive embodiments；
Figure 11 is the structural schematic diagram two of the focusing component of the inventive embodiments；
Figure 12 is the structural schematic diagram one of the correction component of the inventive embodiments；
Figure 13 is the structural schematic diagram two of the correction component of the inventive embodiments；
Figure 14 is the outline structural diagram one of the inventive embodiments；
Figure 15 is the outline structural diagram two of the inventive embodiments；
Figure 16 is the outline structural diagram three of the inventive embodiments；
Figure 17 is the outline structural diagram four of the inventive embodiments；
In figure：
Fixed group A before A-；B- zoom groups B；Fixed group C after C-；The first positive meniscus lens of A-1 A-1；B-1 double-concave negative lens
B-1；C-1 biconvex positive lens C-1；The second positive meniscus lens of C-2 C-2；C-3 third positive meniscus lens C-3；1- zoom components；2-
Focusing component；3- light bar components；4- corrects component；5- body tubes；6- zoom balladeur trains；7- zoom lens barrels；8- zoom cams；9- steel
Pearl；10- cam trim rings；11- zoom guide pin components；12- zoom motors；13- microswitch components；14- microswitches dial nail；
15- zoom electric machine supports；16- zoom motor columns；17- zoom motor gears；18- zoom cam wheels；19- straight troughs A；20-
Preceding group lens barrel；Trim ring is organized before 21-；22- zoom trim rings；23- gas vents；24- focal length detent mechanisms；25- positioning seats；26- straight troughs
Mouthful；27- radial direction axis holes；28- steel balls；29- pressing plates；30- springs；31- locating slots；32- spring positioning axis；33- spring pressuring rings；
34- rear group lens barrels；35- trim rings A；36- trim rings B；37- focusing drawtubes；38- focusing cams；39- focusing cam trim rings；40- focuses
Cam guide pin；41- focusing motors；42- microswitch components two；43- focusing electric machine supports；44- focusing motor columns；45- tune
Burnt motor gear；46- focusing cam gears；47- straight troughs B；48- corrects cabin；49- correcting plates；50- correcting motors；51- correction electricity
Machine gear；52- intermediate gears；The 53- gear teeth；54- light holes；55- correcting motor holders；56- correcting motor columns；57- is limited
Microswitch component；58- corrects hatchway cover；59- detector assemblies.
Specific implementation mode
The present invention is further described with reference to the accompanying drawings and detailed description.
As shown in Fig. 1~17, a kind of big target surface double-view field zoom lens of LONG WAVE INFRARED, in the optical system of the camera lens
Along light from left to right incident direction be equipped with successively it is preceding it is fixed organize A, zoom group B, a rear fixed group C, fixed group A includes the before described
One positive meniscus lens A-1；The zoom group B includes double-concave negative lens B-1；Fixed group C includes setting successively from left to right after described
Biconvex positive lens C-1, the second positive meniscus lens C-2, the third positive meniscus lens C-3 set, the material of the second positive meniscus lens C-2
For ZnSe, the first positive meniscus lens A-1, double-concave negative lens B-1, biconvex positive lens C-1, third positive meniscus lens C-3 material
It is germanium.
In the present embodiment, short focus between the preceding fixed group A and zoom group B（f=40mm）Airspace be
18.01mm focal length（f=120mm）Airspace be 43.88mm, the air of short focus between the zoom group B and rear fixed group C
Between be divided into 43.23mm, the airspace of focal length is 17.36mm.
In the present embodiment, the airspace between the biconvex positive lens C-1 and the second positive meniscus lens C-2 is
22.71mm, the airspace between the second positive meniscus lens C-2 and third positive meniscus lens C-3 are 42.32mm.
In the present embodiment, the mechanical structure of the camera lens includes being set gradually from left to right along the incident direction of light
Zoom component 1, focusing component 2, light bar component 3, correction component 4, the zoom group B are set in zoom component.
In the present embodiment, the mechanical structure of the camera lens further includes body tube 5, and the zoom component includes being located at primary mirror
Zoom balladeur train 6 inside cylinder, the zoom balladeur train are fixedly provided with zoom lens barrel 7；The zoom balladeur train by with body tube
Grinding is fitted on body tube, and the external posterior segment of the body tube is equipped with zoom cam 8, and the zoom cam passes through steel
Pearl 9 is placed on body tube, to form rolling bearing, and is locked through cam trim ring 10；It is offered by light on the zoom cam
The zoom curved groove of the requirement processing of zoom motion equation is learned, the zoom cam connects with zoom balladeur train through zoom guide pin component 11
It is connected together；The outside of the body tube is equipped with zoom electric machine assembly, the zoom electric machine assembly include zoom motor 12 with it is micro-
Dynamic switch module 13, microswitch dial nail 14, and the zoom motor is pacified by zoom electric machine support 15 and zoom motor column 16
On body tube；Zoom motor gear 17, the rear end face of the zoom cam are connected on the output shaft of the zoom motor
On be bolted with annular zoom cam wheel 18, the zoom motor gear is engaged with zoom cam wheel, on the body tube
Equipped with to limit the straight trough A19 of zoom guide pin component, the interior forward end of the body tube is bolted with preceding group lens barrel 20, before described
Fixed group A is mounted in preceding group lens barrel, and the front end of the first positive meniscus lens A-1 is equipped with preceding group of trim ring 21, the zoom group B
In zoom lens barrel, the front end of the double-concave negative lens B-1 is equipped with zoom trim ring 22, and two are offered on the zoom balladeur train
The inner air of a gas vent 23, zoom balladeur train front end is connected through gas vent with the inner air of rear end, avoids zoom
Inner air extruding leads to not that the movement of zoom group, zoom guide pin component is driven to use upper and lower two rollers when balladeur train is moved forward and backward
Coordinate respectively with the straight trough A of body tube and zoom curved groove, improves cooperation precision, it is steady to improve focal length switching precision and optical axis
It is qualitative.
In the present embodiment, zoom cam wheel is spirally connected by sunk screw and zoom cam, i.e., zoom cam wheel with
Zoom cam parts processing can as possible do zoom cam wheel diameter small, raising zoom motor gear and zoom cam wheel
Transmission ratio, improve zoom cam drive speed, realize double-view field be switched fast.
In the present embodiment, the preceding group lens barrel material selection steel alloy avoids selecting the aluminium coefficient of expansion and optics material
Expect that coefficient of expansion difference is excessive to lead to not meet -40 DEG C -+55 DEG C operating temperature requirements of low temperature.
In the present embodiment, integrated design is useful for the square flange that camera lens connects on the body tube.
In the present embodiment, it is equipped between the front end and the outer surface of body tube of the zoom cam for ensuring that focal length is fixed
Level really with stable focal length detent mechanism 24, realizes that the accurate resetting of double-view field, the focal length detent mechanism include positioning
Seat 25 offers straight trough mouth 26 on the positioning seat along the direction of rotation of zoom cam, and the positioning seat is through being inserted into straight trough mouth
Screw be screwed onto the outer surface of body tube, the radial axis hole 27 that positioning seat is run through in end is offered on the positioning seat, it is described
The end of radial axis hole is embedded there are one steel ball 28, and the steel ball coordinates with radial axle interporal lacuna, and the top of the steel ball is equipped with
The pressing plate 29 being embedded in radial axis hole, the pressing plate are pressed in the top of steel ball, the zoom through the spring 30 at the top of pressing plate
Several locating slots 31 are offered on the external peripheral surface edge of cam front end, the steel ball is embedded at locating slot or is pressed in outer
On circumferential surface, spring positioning axis 32 is inserted in the middle part of the spring, the top of the radial direction axis hole is equipped with spring pressuring ring 33,
The elastic of steel ball and the locating slot of zoom cam is adjusted by elastic spring pressuring ring, left and right adjusting positioning seat can be such that steel ball falls into
Focal length is just met the requirements when locating slot, may insure the Stability and veracity of focal length positioning in this way.
In the present embodiment, the focusing component includes rear group lens barrel 34, after the rear group lens barrel is bolted in body tube
On end face, the front end of the rear group lens barrel is stretched into along the rear end of body tube inside body tube, and the biconvex positive lens C-1 is through trim ring
A35 is mounted on the front end of rear group lens barrel, and the second positive meniscus lens C-2 is mounted on the middle part of rear group lens barrel, institute through trim ring B36
The interior rear end for stating rear group lens barrel is equipped with focusing drawtube 37, and the third positive meniscus lens C-3 is mounted on focusing drawtube, the tune
For burnt lens barrel by being fitted in rear group lens barrel with rear group lens barrel grinding, the external posterior segment of the rear group lens barrel is equipped with focusing
Cam 38, the focusing cam coaxial sleeve are set in rear group lens barrel, and are locked through focusing cam trim ring 39；On the focusing cam
The focusing curve slot of the requirement processing by the optical zoom equation of motion is offered, the focusing cam is convex through focusing with focusing drawtube
Wheel guide pin 40 links together；The outside of the focusing drawtube is equipped with focusing electric machine assembly, and the focusing electric machine assembly includes adjusting
Burnt motor 41 and microswitch component 2 42, the focusing motor pass through 44 installation of electric machine support 43 and focusing motor column of focusing
On focusing drawtube；It is connected with focusing motor gear 45 on the output shaft of the focusing motor, the periphery of the focusing cam is set
There are the focusing cam gear 46 of annular, the focusing motor gear to be engaged with focusing cam gear, the focusing drawtube is equipped with
To limit the straight trough B47 of focusing cam guide pin.
In the present embodiment, the correction component includes the correction cabin that the rear end face through sunk screw and rear group lens barrel is spirally connected
48, the inside in the correction cabin is hinged with a correcting plate 49, and the shape of the correcting plate is sector, the circle centre position of the correcting plate
It is hinged on the interior bottom in correction cabin, the correction component further includes correcting motor 50, is connected on the output shaft of the correcting motor
There are the correcting motor gear 51 inside correction cabin, the correcting motor gear to be engaged with an intermediate gear 52, the centre
Gear is engaged with the gear teeth 53 in the circular arc circumference of correcting plate, and driving correcting plate is rotated around the center of circle, the center line of the correcting plate
Side offer light hole 54, the other side is not punched, and the correcting motor is vertical by correcting motor holder 55 and correcting motor
Column 56 is mounted on correction cabin, and the inside in the correction cabin is additionally provided with position limited inching switch component 57, and the correction cabin is calibrated
Hatchway cover 58 is sealed, and the interior bottom for correcting cabin also is provided with light hole, and when camera lens works, correcting plate goes to position of opening, when
Infrared detector needs timing correcting plate to switch to not position of opening, and thang-kng, realization detector correction function do not limit camera lens
Microswitch component limits correcting plate when correcting plate standard-sized sheet, closure, ensures accurate positioning, while protecting correcting motor
Not stall.
In the present embodiment, the rear end of the correction hatchway cover is equipped with detector assembly 59, reduces structural member, effectively carries
High camera lens reliability.
In the present embodiment, high/low temperature is realized by the movement of third positive meniscus lens C-3（-40℃~60℃）With it is remote
Low coverage compensates, and amount of movement is -1.2mm（Low temperature）/+1.5mm（High temperature）, it is negative close to detector assembly, far from detector assembly
For just, i.e., three kinds of zoom, focusing and temperature-compensating functions can be achieved at the same time in the big target surface double-view field zoom lens of the LONG WAVE INFRARED,
Suitable for fields such as safety monitorings, to solve, existing infrared zoom system, pancreatic system size is bigger than normal, resolution ratio is low, the selection of long short focus does not conform to
The problems such as reason, ensure optical system different environment temperatures and length is eager change under conditions of, to far and near target all have it is excellent
Good image quality.
A kind of Zooming method of the big target surface double-view field zoom lens of LONG WAVE INFRARED, includes the following steps：
（1）The rotor of zoom motor does positive and negative rotary motion, and zoom cam is driven to correspondingly rotate；
（2）Zoom curved groove and zoom guide pin component drive zoom balladeur train to be moved in the way of zoom curved groove, in straight trough
Under limitation, the rotary motion of zoom balladeur train becomes linear motion and carries out zoom.
In the present embodiment, the optical system being made of above-mentioned lens set has reached following optical index：
（1）Focal length：40mm~120mm；
（2）Field angle：2 ω=19.9 °~6.7 °；
（3）Relative aperture：1：1.0；
（4）It is applicable in spectral region：8um~12um；
（5）Operating temperature：- 40 DEG C~+60 DEG C.
Above-listed preferred embodiment, has been further described the object, technical solutions and advantages of the present invention, is answered
Understand, the foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
With within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention god.
Claims (1)
1. a kind of big target surface double-view field zoom lens of LONG WAVE INFRARED, it is characterised in that：Along light in the optical system of the camera lens
Line from left to right incident direction be equipped with successively it is preceding it is fixed organize A, zoom group B, a rear fixed group C, fixed group A includes first just before described
Meniscus lens A-1；The zoom group B includes double-concave negative lens B-1；Fixed group C includes setting gradually from left to right after described
Biconvex positive lens C-1, the second positive meniscus lens C-2, third positive meniscus lens C-3；Before described between fixed group A and zoom group B
The airspace of short focus is 18.01mm, and the airspace of focal length is 43.88mm, short between the zoom group B and rear fixed group C
Burnt airspace is 43.23mm, and the airspace of focal length is 17.36mm；The positive bent moons of biconvex positive lens C-1 and second are saturating
Airspace between mirror C-2 is 22.71mm, the sky between the second positive meniscus lens C-2 and third positive meniscus lens C-3
42.32mm is divided between gas；The mechanical structure of the camera lens includes the zoom set gradually from left to right along the incident direction of light
Component, focusing component, light bar component, correction component, the zoom group B are set in zoom component；The mechanical structure of the camera lens
Further include body tube, the zoom component includes the zoom balladeur train being located inside body tube, and the inside of the zoom balladeur train is fixed
There is zoom lens barrel；The zoom balladeur train with body tube grinding by being fitted on body tube, in the outside of the body tube
Back segment is equipped with zoom cam, and the zoom cam is placed in by steel ball on body tube, to form rolling bearing, and through cam pressure
Circle locking；The zoom curved groove of the requirement processing by the optical zoom equation of motion, the zoom are offered on the zoom cam
Cam links together with zoom balladeur train through zoom guide pin component；The outside of the body tube is equipped with zoom electric machine assembly, described
Zoom electric machine assembly includes that zoom motor dials nail with microswitch component, microswitch, and the zoom motor passes through zoom motor
Holder and zoom motor column are mounted on body tube；Zoom motor gear, institute are connected on the output shaft of the zoom motor
The zoom cam wheel that annular is bolted on the rear end face of zoom cam is stated, the zoom motor gear is nibbled with zoom cam wheel
It closes, the body tube is equipped with to limit the straight trough A of zoom guide pin component, and the interior forward end of the body tube is bolted with preceding group
Lens barrel, fixed group A is mounted in preceding group lens barrel before described, and the front end of the first positive meniscus lens A-1 is equipped with preceding group of trim ring, institute
Zoom group B is stated in the zoom lens barrel, the front end of the double-concave negative lens B-1 is equipped with zoom trim ring, on the zoom balladeur train
It opens up there are two gas vent, the inner air of zoom balladeur train front end is connected through gas vent with the inner air of rear end；Institute
It states and is equipped between the front end of zoom cam and the outer surface of body tube for ensuring that focal length accurate positioning is positioned with the focal length stablized
Mechanism, the focal length detent mechanism includes positioning seat, and straight trough is offered along the direction of rotation of zoom cam on the positioning seat
Mouthful, the positioning seat is screwed onto the outer surface of body tube through being inserted into the screw of straight trough mouth, and offering end on the positioning seat passes through
The radial axis hole of positioning seat is worn, the end of the radial direction axis hole is embedded there are one steel ball, and the steel ball is matched with radial axle interporal lacuna
It closes, the top of the steel ball is equipped with the pressing plate being embedded in radial axis hole, and the pressing plate is through the spring compression at the top of pressing plate in steel
The top of pearl offers several locating slots on the external peripheral surface edge of zoom cam front end, and the steel ball is embedded at
Locating slot is pressed on external peripheral surface, and spring positioning axis, the top of the radial direction axis hole are inserted in the middle part of the spring
Equipped with spring pressuring ring；The focusing component includes rear group lens barrel, and the rear group lens barrel is bolted on the rear end face of body tube, described
The front end of rear group lens barrel is stretched into along the rear end of body tube inside body tube, biconvex positive lens C-1 groups after trim ring A is mounted on
The front end of lens barrel, the second positive meniscus lens C-2 through trim ring B be mounted on rear group lens barrel middle part, the rear group lens barrel it is interior
Rear end be equipped with focusing drawtube, the third positive meniscus lens C-3 be mounted on focusing drawtube on, the focusing drawtube by with rear group
Lens barrel grinding is fitted in rear group lens barrel, and the external posterior segment of the rear group lens barrel is equipped with focusing cam, and the focusing is convex
It takes turns coaxial sleeve to be set in rear group lens barrel, and is locked through focusing cam trim ring；It offers on the focusing cam and is transported by optical zoom
The focusing curve slot of the requirement processing of dynamic equation, the focusing cam link together with focusing drawtube through focusing cam guide pin；
The outside of the focusing drawtube is equipped with focusing electric machine assembly, and the focusing electric machine assembly includes focusing motor and microswitch component
Two, the focusing motor is mounted on by focus electric machine support and focusing motor column on focusing drawtube；The focusing motor
Focusing motor gear is connected on output shaft, the periphery of the focusing cam is equipped with the focusing cam gear of annular, the focusing
Motor gear is engaged with focusing cam gear, and the focusing drawtube is equipped with to limit the straight trough B of focusing cam guide pin；It is described
Correction component includes the correction cabin that the rear end face through sunk screw and rear group lens barrel is spirally connected, and the inside in the correction cabin is hinged with one
The shape of correcting plate, the correcting plate is sector, and the circle centre position of the correcting plate is hinged on the interior bottom in correction cabin, the correction
Component further includes correcting motor, the correcting motor gear being connected on the output shaft of the correcting motor inside correction cabin,
The correcting motor gear is engaged with an intermediate gear, the gear teeth meshing in the circular arc circumference of the intermediate gear and correcting plate,
Correcting plate is driven to be rotated around the center of circle, the side of the center line of the correcting plate offers light hole, and the correcting motor passes through school
Positive electricity machine support and correcting motor column are mounted on correction cabin, and the inside in the correction cabin is additionally provided with position limited inching switch group
Part, the calibrated hatchway cover in the correction cabin are sealed, and the interior bottom for correcting cabin also is provided with light hole；The correction hatchway cover
Rear end is equipped with detector assembly；The Zooming method of the big target surface double-view field zoom lens of the LONG WAVE INFRARED includes the following steps：
（1）The rotor of zoom motor does positive and negative rotary motion, and zoom cam is driven to correspondingly rotate；
（2）Zoom curved groove and zoom guide pin component drive zoom balladeur train to be moved in the way of zoom curved groove, are limited in straight trough
Under, the rotary motion of zoom balladeur train becomes linear motion and carries out zoom.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610699315.9A CN106154522B (en) | 2016-08-22 | 2016-08-22 | The big target surface double-view field zoom lens of LONG WAVE INFRARED and its Zooming method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610699315.9A CN106154522B (en) | 2016-08-22 | 2016-08-22 | The big target surface double-view field zoom lens of LONG WAVE INFRARED and its Zooming method |
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| Publication Number | Publication Date |
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| CN106154522A CN106154522A (en) | 2016-11-23 |
| CN106154522B true CN106154522B (en) | 2018-08-21 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107608061B (en) * | 2017-09-28 | 2019-12-24 | 福建福光股份有限公司 | F200mm refrigeration type medium wave infrared athermal lens |
| CN108983387A (en) * | 2018-09-05 | 2018-12-11 | 北京富吉瑞光电科技有限公司 | A kind of infrared lens focus control |
| CN110412753B (en) * | 2019-08-08 | 2024-07-05 | 福建福光天瞳光学有限公司 | Long-wave infrared large-aperture zoom lens and focusing method thereof |
| CN111580257A (en) * | 2020-06-15 | 2020-08-25 | 福建福光天瞳光学有限公司 | Large-target-surface high-definition low-distortion industrial lens and focusing method thereof |
| CN111722383A (en) * | 2020-07-21 | 2020-09-29 | 福建福光天瞳光学有限公司 | Long-wave infrared double-view-field motorized zoom lens and assembling method thereof |
| CN111998801B (en) * | 2020-08-19 | 2021-10-19 | 哈尔滨新光光电科技股份有限公司 | Roll pendulum formula two-dimensional imaging mechanism |
| CN114690361B (en) * | 2021-12-31 | 2023-06-02 | 福建福光股份有限公司 | Medium wave capturing and tracking system |
| CN115308890B (en) * | 2022-10-12 | 2022-12-20 | 昆明全波红外科技有限公司 | Compact type long-wave manual zooming infrared lens |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| FR2910133B1 (en) * | 2006-12-13 | 2009-02-13 | Thales Sa | IMAGING SYSTEM IR2-IR3 BI-FIELD COMPACT |
| CN203324565U (en) * | 2013-06-28 | 2013-12-04 | 山东神戎电子股份有限公司 | Infrared zooming lens |
| CN103676111B (en) * | 2013-12-09 | 2016-05-25 | 西南技术物理研究所 | The double-view field LONG WAVE INFRARED PASSIVE OPTICAL poor optical system of heat that disappears |
| CN105116526B (en) * | 2015-09-21 | 2017-08-25 | 福建福光股份有限公司 | High zoom ratio continuous vari-focus telephotography camera lens and its control method |
| CN206039017U (en) * | 2016-08-22 | 2017-03-22 | 福建福光股份有限公司 | Big target surface dual -view field zoom lens of long wave infrared |
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