CN206039017U - Big target surface dual -view field zoom lens of long wave infrared - Google Patents
Big target surface dual -view field zoom lens of long wave infrared Download PDFInfo
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- CN206039017U CN206039017U CN201620913802.6U CN201620913802U CN206039017U CN 206039017 U CN206039017 U CN 206039017U CN 201620913802 U CN201620913802 U CN 201620913802U CN 206039017 U CN206039017 U CN 206039017U
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Abstract
The utility model relates to a big target surface dual -view field zoom lens of long wave infrared, fix the A of group before right side incident direction is equipped with in proper order along light from the left hand among the optical system of camera lens, become and doubly organize B, the C of after -fixing group, does the preceding fixed A of group include first positive meniscus lens A 1 is the change doubly organized B and is included biconcave negative lens B 1 does the C of after -fixing group include the biconvex positive lens C who follows the left hand right side and set gradually 1, the positive meniscus lens C of second 2, the positive meniscus lens C of third 3. This big target surface dual -view field zoom lens of long wave infrared's optical system structure is simple, and lens structure length is short, small convenient to carry, has advantages such as compact structure, big target surface, high resolution.
Description
Technical field
This utility model is related to a kind of big target surface double-view field varifocal lenses of LONG WAVE INFRARED, is related to optical technical 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.As there is urgent answering in the fields such as the fast development of infrared imagery technique, safety monitoring to infrared variable focal length optical system
Use demand.But existing infrared zoomlens area of bed is bigger than normal, carry inconvenient, target surface is little, long short focus select unreasonable,
Picture quality is not good, and the search and identification ability to infrared target is limited, limits its range of application.
Utility model content
The purpose of this utility model is for above weak point, there is provided a kind of big target surface of the LONG WAVE INFRARED of simple structure
Double-view field varifocal lenses.
The technical solution of the utility model is, a kind of big target surface double-view field varifocal lenses of LONG WAVE INFRARED, the camera lens
Along light a fixed group A, zoom group B, rear fixed group C before incident direction is sequentially provided with from left to right in optical system, it is described before it is solid
Surely organizing A includes the first positive meniscus lens A-1；Zoom group B includes double-concave negative lens B-1；After described, fixed group C is included from a left side
The biconvex positive lens C-1 that sets gradually to the right, the second positive meniscus lens C-2, the 3rd positive meniscus lens C-3.
Further, before described, between fixed group A and zoom group B, the airspace of short focus is 18.01mm, the air of focal length
At intervals of 43.88mm, between zoom group B and rear fixed group C, the airspace of short focus is 43.23mm, 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 the 3rd positive meniscus lens C-3 is 42.32mm.
Further, the frame for movement of the camera lens includes the zoom that the incident direction along light is set gradually from left to right
Component, focusing component, light bar component, correction component, zoom group B is in zoom component.
Further, the frame for movement of the camera lens also includes body tube, and the zoom component is included in body tube
The zoom balladeur train in portion, the zoom balladeur train are fixedly provided with zoom lens barrel；The zoom balladeur train is by matching somebody with somebody with body tube grinding
Close on body tube, the outside posterior segment of the body tube is provided with zoom cam, and the zoom cam is placed in by steel ball
On body tube, to constitute rolling bearing, and the locking of Jing cams trim ring；Offer on the zoom cam and move by optical zoom
The zoom curved groove of the requirement processing of equation, the zoom cam are linked together with zoom balladeur train Jing zoom guide pin components；Institute
The outside for stating body tube is provided 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 passes through zoom electric machine support and zoom motor column is arranged on body tube；The zoom
Zoom motor gear is connected with the output shaft of motor, is bolted with the zoom cam tooth of annular 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 provided with to limit zoom guide pin component
Straight trough A, the interior forward end of the body tube are bolted with front group of lens barrel, it is described before fixed group A be arranged in front group of lens barrel, described the
The front end of one positive meniscus lens A-1 is provided with front group of trim ring, and zoom group B is arranged in zoom lens barrel, the double-concave negative lens
The front end of B-1 is provided with zoom trim ring, offers two steam vents on the zoom balladeur train, and the inside of the zoom balladeur train front end is empty
Gas Jing steam vents are connected with the inner air of rear end.
Further, it is provided with accurate for guaranteeing focal length positioning between the front end of zoom cam and the outer surface of body tube
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 screw of the positioning seat Jing insertions straight trough mouth is screwed onto the outer surface of body tube, described fixed
Radial direction axis hole of the end through positioning seat is offered on the seat of position, and the end of the radial direction axis hole is embedded with a steel ball, the steel
Pearl is coordinated with radial axle interporal lacuna, is provided with the pressing plate being embedded in radial direction axis hole, the pressing plate Jing pressing plates at the top of the steel ball
The spring compression at top offers several positioning on the top of steel ball, the external peripheral surface edge of the zoom cam front end
Groove, the steel ball are embedded at locating slot or are pressed on external peripheral surface, are inserted with spring locating shaft, institute in the middle part of the spring
State spring pressuring ring is provided with the top of radial direction axis hole.
Further, the focusing component includes rear group of lens barrel, and the rear group lens barrel is bolted on the rear end face of body tube,
After described, the rear end of the front end edge body tube of group lens barrel is stretched into inside body tube, and the biconvex positive lens C-1 Jing trim ring A are arranged on
The front end of lens barrel is organized afterwards, and the second positive meniscus lens C-2 organizes the middle part of lens barrel, the rear group lens barrel Jing after trim ring B is arranged on
Interior rear end be provided with focusing drawtube, the 3rd positive meniscus lens C-3 is arranged on focusing drawtube, the focusing drawtube by with
Organize lens barrel grinding afterwards to coordinate on rear group of lens barrel, the outside posterior segment of the rear group lens barrel is provided with focusing cam, the tune
Burnt cam coaxial is sheathed on rear group of lens barrel, and the locking of Jing focusing cams trim ring；Offer on the focusing cam and become by optics
The focusing curve groove of the requirement processing of the burnt equation of motion, the focusing cam are connected to one with focusing drawtube Jing focusing cam guide pins
Rise；The outside of the focusing drawtube is provided with focusing electric machine assembly, and the focusing electric machine assembly includes focus motor and microswitch
Component two, the focusing motor are arranged on focusing drawtube by focus electric machine support and focusing motor column；The focusing electricity
Focusing motor gear is connected with the output shaft of machine, and the periphery of the focusing cam is provided with the focusing cam gear of annular, described
Focusing motor gear is engaged with focusing cam gear, and the focusing drawtube is provided 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 for organizing lens barrel with after Jing sunk screw is spirally connected, institute
The inside for stating correction cabin is hinged with a correcting plate, and the correcting plate is shaped as sector, and the circle centre position of the correcting plate is hinged on
The inner bottom part in correction cabin, the correction component also include correcting motor, are 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 idler gear, the idler gear and correcting plate
Gear teeth meshing of the circular arc week in portion, drive correcting plate to rotate around the center of circle, the side of the centrage of the correcting plate offers logical
Unthreaded hole, the correcting motor pass through correcting motor support and correcting motor column and are arranged on correction cabin, the correction cabin it is interior
Portion is additionally provided with position limited inching switch component, and the calibrated hatchway cover in the correction cabin is sealed, and the inner bottom part for correcting cabin also is provided with
Light hole.
Further, the rearward end of the correction hatchway cover is provided with detector assembly.
Compared with prior art, this utility model has the advantages that：（1）The big target surface double-view field of the LONG WAVE INFRARED becomes
The optical system structure of focal length lenses is simple, and the compact, length of lens construction assembling is short, small volume is easy to carry, tight with structure
Gather, big target surface, high-resolution the advantages of.（2）The lens focus are 40mm-120mm, can match pixel number for 640*512, pixel
Big target surface detector of the size for 17um.
Description of the drawings
Below in conjunction with the accompanying drawings this utility model patent is further illustrated.
Optical system schematic diagram when Fig. 1 is the utility model embodiment short focus；
Optical system schematic diagram when Fig. 2 is the utility model embodiment focal length；
Fig. 3 is the frame for movement schematic diagram of the utility model embodiment；
Fig. 4 is the structural representation one of the zoom component of the utility model embodiment；
Fig. 5 is the structural representation two of the zoom component of the utility model embodiment；
Structural representations one of the Fig. 6 for focal length detent mechanism；
Structural representations two of the Fig. 7 for focal length detent mechanism；
Structural representations three of the Fig. 8 for focal length detent mechanism；
Working state schematic representations of the Fig. 9 for focal length detent mechanism；
Figure 10 is the structural representation one of the focusing component of the utility model embodiment；
Figure 11 is the structural representation two of the focusing component of the utility model embodiment；
Figure 12 is the structural representation one of the correction component of the utility model embodiment；
Figure 13 is the structural representation two of the correction component of the utility model embodiment；
Figure 14 is the contour structures schematic diagram one of the utility model embodiment；
Figure 15 is the contour structures schematic diagram two of the utility model embodiment；
Figure 16 is the contour structures schematic diagram three of the utility model embodiment；
Figure 17 is the contour structures schematic diagram four of the utility model embodiment；
In figure：
Fixed group A before A-；B- zoom groups B；Fixed group C after C-；A-1 the first positive meniscus lens A-1；B-1 double-concave negative lens
B-1；C-1 biconvex positive lens C-1；C-2 the second positive meniscus lens C-2；The 3rd positive meniscus lens C-3 of 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- microswitch dials nail；
15- zoom electric machine supports；16- zoom motor columns；17- zoom motor gears；18- zoom cam wheels；19- straight trough A；20-
Front group of lens barrel；Trim ring is organized before 21-；22- zoom trim rings；23- steam 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 locating shafts；33- spring pressuring rings；
Lens barrel is organized after 34-；35- trim ring A；36- trim ring 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- is adjusted
Burnt motor gear；46- focusing cam gears；47- straight trough B；48- corrects cabin；49- correcting plates；50- correcting motors；51- correction electricity
Machine gear；52- idler gears；The 53- gear teeth；54- light holes；55- correcting motor supports；56- correcting motor columns；57- is spacing
Microswitch component；58- corrects hatchway cover；59- detector assemblies.
Specific embodiment
With reference to the accompanying drawings and detailed description this utility model is further illustrated.
As shown in Fig. 1～17, a kind of big target surface double-view field varifocal lenses of LONG WAVE INFRARED, in the optical system of the camera lens
Along light a fixed group A, zoom group B, rear fixed group C before incident direction is sequentially provided with from left to right, it is described before a fixed group A include the
One positive meniscus lens A-1；Zoom group B includes double-concave negative lens B-1；After described, fixed group C includes setting successively from left to right
The biconvex positive lens C-1 that puts, the second positive meniscus lens C-2, the 3rd positive meniscus lens C-3, 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, the material of the 3rd positive meniscus lens C-3
It is germanium.
In the present embodiment, short focus between the front 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 zoom group B and rear fixed group C
At intervals of 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 the 3rd positive meniscus lens C-3 are 42.32mm.
In the present embodiment, the frame for movement of the camera lens includes that the incident direction along light is set gradually from left to right
Zoom component 1, focusing component 2, light bar component 3, correction component 4, zoom group B is in zoom component.
In the present embodiment, the frame for movement of the camera lens also includes body tube 5, and the zoom component is included positioned 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 coordinates on body tube, and the outside posterior segment of the body tube is provided with zoom cam 8, and the zoom cam passes through steel
Pearl 9 is placed on body tube, and to constitute rolling bearing, and Jing cams trim ring 10 is locked；Offer by light on the zoom cam
The zoom curved groove of the requirement processing of zoom motion equation is learned, the zoom cam is connected with zoom balladeur train Jing zoom guide pins component 11
It is connected together；The outside of the body tube is provided with zoom electric machine assembly, the zoom electric machine assembly include zoom motor 12 with it is micro-
Dynamic switch module 13, microswitch dials nail 14, and the zoom motor passes through zoom electric machine support 15 and zoom motor column 16 is pacified
It is mounted on body tube；Zoom motor gear 17, the rear end face of the zoom cam is connected with 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
Be provided with to limit the straight trough A19 of zoom guide pin component, the interior forward end of the body tube is bolted with front group of lens barrel 20, it is described before
Fixed group A is arranged in front group of lens barrel, and the front end of the first positive meniscus lens A-1 is provided with front group of trim ring 21, zoom group B
In zoom lens barrel, the front end of the double-concave negative lens B-1 is provided with zoom trim ring 22, offers two on the zoom balladeur train
Individual steam vent 23, the inner air Jing steam vents of the zoom balladeur train front end are connected with the inner air of rear end, it is to avoid zoom
When balladeur train is movable, inner air extruding leads to not drive the movement of zoom group, zoom guide pin component to adopt upper and lower two rollers
Coordinate with the straight trough A and zoom curved groove of body tube respectively, improve quality of fit, it is steady so as to improve focal length switching precision and optical axis
It is qualitative.
In the present embodiment, zoom cam wheel is spirally connected with zoom cam by sunk screw, i.e., zoom cam wheel with
Zoom cam parts processing, can do little as far as possible zoom cam wheel diameter, improve zoom motor gear and zoom cam wheel
Gear ratio, improve zoom cam drive speed, realize that double-view field is switched fast.
In the present embodiment, the front group lens barrel material selection steel alloy, it is to avoid from the aluminium coefficient of expansion and optics material
Expect that coefficient of expansion difference is excessive to lead to not meet -40 DEG C of -+55 DEG C of operating temperature requirements of low temperature.
In the present embodiment, on the body tube, integrated design has the square flange for camera lens connection.
In the present embodiment, it is provided between the front end of zoom cam and the outer surface of body tube for guaranteeing that focal length is fixed
Level really with stable focal length detent mechanism 24, realize the accurate resetting of double-view field, the focal length detent mechanism includes positioning
Seat 25, the direction of rotation on the positioning seat along zoom cam offer straight trough mouth 26, and the positioning seat Jing inserts straight trough mouth
Screw be screwed onto the outer surface of body tube, offer radial direction axis hole 27 of the end through positioning seat on the positioning seat, it is described
The end of radial direction axis hole is embedded with a steel ball 28, and the steel ball is coordinated with radial axle interporal lacuna, is provided with the top of the steel ball
The pressing plate 29 being embedded in radial direction axis hole, the spring 30 at the top of the pressing plate Jing pressing plates are pressed in the top of steel ball, the zoom
Several locating slots 31 are offered on the external peripheral surface edge of cam front end, and the steel ball is embedded at locating slot or is pressed in outer
On circumferential surface, spring locating shaft 32 is inserted with the middle part of the spring, spring pressuring ring 33 is provided with the top of the radial direction axis hole,
Elastic with the locating slot of zoom cam by elastic spring pressuring ring scalable steel ball, left and right adjusting positioning seat falls into can steel ball
During locating slot, focal length just meets requirement, so may insure the Stability and veracity of focal length positioning.
In the present embodiment, after the focusing component includes that rear group of lens barrel 34, the rear group lens barrel are bolted in body tube
On end face, the rear end of the front end edge body tube of the rear group lens barrel is stretched into inside body tube, the biconvex positive lens C-1 Jing trim rings
A35 is arranged on the front end of rear group of lens barrel, and the second positive meniscus lens C-2 organizes the middle part of lens barrel, institute Jing after trim ring B36 is arranged on
The interior rear end for stating rear group of lens barrel is provided with focusing drawtube 37, and the 3rd positive meniscus lens C-3 is arranged on focusing drawtube, the tune
By coordinating on rear group of lens barrel with rear group of lens barrel grinding, the outside posterior segment of the rear group lens barrel is provided with focusing to burnt lens barrel
Cam 38, the focusing cam coaxial sleeve is on rear group of lens barrel, and Jing focusing cams trim ring 39 is locked；On the focusing cam
The focusing curve groove processed by the requirement of the optical zoom equation of motion is offered, the focusing cam is focused convex with focusing drawtube Jing
Wheel guide pin 40 links together；The outside of the focusing drawtube is provided with focusing electric machine assembly, and the focusing electric machine assembly includes adjusting
Burnt motor 41 and microswitch component 2 42, the focusing motor are installed by focus electric machine support 43 and focusing motor column 44
On focusing drawtube；Focusing motor gear 45 is connected with the output shaft of the focusing motor, the periphery of the focusing cam sets
There is the focusing cam gear 46 of annular, the focusing motor gear is engaged with focusing cam gear, and the focusing drawtube is provided 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 for organizing lens barrel with after Jing sunk screw is spirally connected
48, the inside in the correction cabin is hinged with a correcting plate 49, and the correcting plate is shaped as sector, the circle centre position of the correcting plate
The inner bottom part in correction cabin is hinged on, the correction component also includes correcting motor 50, connects on the output shaft of the correcting motor
The correcting motor gear 51 having inside correction cabin, the correcting motor gear are engaged with an idler gear 52, the centre
The circular arc week of gear and correcting plate, the gear teeth 53 in portion engaged, and drove correcting plate to rotate around the center of circle, the centrage of the correcting plate
Side offer light hole 54, opposite side does not punch, and it is vertical that the correcting motor passes through correcting motor support 55 and correcting motor
Post 56 is arranged 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 inner bottom part for correcting cabin also is provided with light hole, and when camera lens works, correcting plate goes to position of opening, when
Infrared Detectorss need timing correcting plate to switch to not position of opening, camera lens not thang-kng, realize detector correction function, spacing
Microswitch component carries out spacing when correcting plate standard-sized sheet, closure to correcting plate, it is ensured that accurate positioning, while protecting correcting motor
Not stall.
In the present embodiment, the rearward end of the correction hatchway cover is provided with detector assembly 59, reduces structural member, effectively carries
High camera lens reliability.
In the present embodiment, by the movement of the 3rd positive meniscus lens C-3 realizing high/low temperature（-40℃~60℃）With it is remote
Low coverage is compensated, and amount of movement is -1.2mm（Low temperature）/+1.5mm（High temperature）, it is negative near detector assembly, away from detector assembly
For just, i.e., the big target surface double-view field varifocal lenses of the LONG WAVE INFRARED can realize zoom, three kinds of functions of focusing and temperature-compensating simultaneously,
Suitable for fields such as safety monitorings, to solve, existing infrared zoom system, pancreatic system size is bigger than normal, resolution is low, long short focus select not conforming to
The problems such as reason, it is ensured that optical system different ambient temperatures and length are eager change under conditions of, far and near target is all had excellent
Good image quality.
A kind of Zooming method of the big target surface double-view field varifocal lenses of LONG WAVE INFRARED, comprises the following steps：
（1）The rotor of zoom motor does positive and negative rotary motion, drives zoom cam to do corresponding rotation；
（2）Zoom curved groove and zoom guide pin component drive zoom balladeur train to move in the way of zoom curved groove, in straight trough
Under restriction, the rotary motion of zoom balladeur train is changed into linear motion carries out zoom.
In the present embodiment, the optical system being made up of above-mentioned lens set has reached following optical index：
（1）Focal length：40mm~120mm；
（2）The angle of visual field：2 ω=19.9 °～6.7 °；
（3）Relative aperture：1：1.0；
（4）Applicable spectral region：8um～12um；
（5）Operating temperature：- 40 DEG C～+60 DEG C.
Above-listed preferred embodiment, is further described to the purpose of this utility model, technical scheme and advantage,
It is be should be understood that to the foregoing is only preferred embodiment of the present utility model, it is not to limit this utility model, all
Within spirit of the present utility model and principle, any modification, equivalent substitution and improvements made etc. should be included in practical
Within new protection domain.
Claims (9)
1. big target surface double-view field varifocal lenses of a kind of LONG WAVE INFRARED, it is characterised in that：Along light in the optical system of the camera lens
Line fixes group A, zoom group B, rear fixed group C before incident direction is sequentially provided with from left to right, and the front fixed group A is just including first
Meniscus lens A-1；Zoom group B includes double-concave negative lens B-1；After described, fixed group C includes what is set gradually from left to right
Biconvex positive lens C-1, the second positive meniscus lens C-2, the 3rd positive meniscus lens C-3.
2. big target surface double-view field varifocal lenses of LONG WAVE INFRARED according to claim 1, it is characterised in that：It is fixed before described
Between group A and zoom group B, the airspace of short focus is 18.01mm, and the airspace of focal length is 43.88mm, zoom group B with
Between fixed group C, the airspace of short focus is 43.23mm afterwards, and the airspace of focal length is 17.36mm.
3. big target surface double-view field varifocal lenses of LONG WAVE INFRARED according to claim 2, it is characterised in that：The biconvex is just
Airspace between lens C-1 and the second positive meniscus lens C-2 is 22.71mm, the second positive meniscus lens C-2 and the 3rd
Airspace between positive meniscus lens C-3 is 42.32mm.
4. big target surface double-view field varifocal lenses of LONG WAVE INFRARED according to claim 3, it is characterised in that：The camera lens
Frame for movement includes the zoom component that the incident direction along light set gradually from left to right, focusing component, light bar component, correction
Component, zoom group B is in zoom component.
5. big target surface double-view field varifocal lenses of LONG WAVE INFRARED according to claim 4, it is characterised in that：The camera lens
Frame for movement also includes body tube, and the zoom component includes the zoom balladeur train inside body tube, the zoom balladeur train
It is fixedly provided with zoom lens barrel；The zoom balladeur train is arranged on body tube by being coordinated with body tube grinding, the body tube
Outside posterior segment be provided with zoom cam, the zoom cam is placed on body tube by steel ball, to constitute rolling bearing, and
Jing cams trim ring is locked；The zoom curved groove processed by the requirement of the optical zoom equation of motion is offered on the zoom cam,
The zoom cam is linked together with zoom balladeur train Jing zoom guide pin components；The outside of the body tube is provided with zoom group of motors
Part, the zoom electric machine assembly include that zoom motor dials nail with microswitch component, microswitch, and the zoom motor is by becoming
Times electric machine support and zoom motor column are arranged on body tube；Zoom motor tooth is connected with the output shaft of the zoom motor
Wheel, is bolted with the zoom cam wheel of annular, the zoom motor gear and zoom cam on the rear end face of the zoom cam
Gear is engaged, and the body tube is provided with to limit the straight trough A of zoom guide pin component, and the interior forward end of the body tube is spirally connected
There is front group of lens barrel, the front fixed group A is arranged in front group of lens barrel, and the front end of the first positive meniscus lens A-1 is provided with front group
Trim ring, zoom group B are arranged in zoom lens barrel, and the front end of the double-concave negative lens B-1 is provided with zoom trim ring, the zoom
Two steam vents are offered on balladeur train, and the inner air Jing steam vents of the zoom balladeur train front end are connected with the inner air of rear end
It is logical.
6. big target surface double-view field varifocal lenses of LONG WAVE INFRARED according to claim 5, it is characterised in that：The zoom is convex
It is provided between the front end of wheel and the outer surface of body tube for guaranteeing focal length accurate positioning and stable focal length detent mechanism, it is described
Focal length detent mechanism includes positioning seat, and the direction of rotation on the positioning seat along zoom cam offers straight trough mouth, described fixed
The screw of position seat Jing insertion straight trough mouths is screwed onto the outer surface of body tube, offers end through positioning seat on the positioning seat
Radial direction axis hole, the end of the radial direction axis hole are embedded with a steel ball, and the steel ball is coordinated with radial axle interporal lacuna, the steel ball
Top be provided with the pressing plate being embedded in radial direction axis hole, the spring compression at the top of the pressing plate Jing pressing plates is in the top of steel ball, institute
Several locating slots are offered on the external peripheral surface edge for stating zoom cam front end, and the steel ball is embedded at locating slot or compression
On external peripheral surface, spring locating shaft is inserted with the middle part of the spring, spring pressuring ring is provided with the top of the radial direction axis hole.
7. big target surface double-view field varifocal lenses of LONG WAVE INFRARED according to claim 5, it is characterised in that：The focusing group
Part includes rear group of lens barrel, and the rear group lens barrel is bolted on the rear end face of body tube, the front end edge body tube of the rear group lens barrel
Rear end stretch into inside body tube, the biconvex positive lens C-1 organizes the front end of lens barrel Jing after trim ring A is arranged on, and described second just
Meniscus lens C-2 organizes the middle part of lens barrel Jing after trim ring B is arranged on, and the interior rear end of the rear group lens barrel is provided with focusing drawtube, described
3rd positive meniscus lens C-3 is arranged on focusing drawtube, after the focusing drawtube is by being arranged on rear group of lens barrel grinding cooperation
On group lens barrel, the outside posterior segment of the rear group lens barrel is provided with focusing cam, and the focusing cam coaxial sleeve is located at rear group of lens barrel
On, and the locking of Jing focusing cams trim ring；The tune processed by the requirement of the optical zoom equation of motion is offered on the focusing cam
Burnt curved groove, the focusing cam are linked together with focusing drawtube Jing focusing cam guide pins；The outside of the focusing drawtube sets
There is focusing electric machine assembly, the focusing electric machine assembly includes focus motor and microswitch component two, and the focusing motor passes through
Focusing electric machine support and focusing motor column are arranged on focusing drawtube；Focusing electricity is connected with the output shaft of the focusing motor
Machine gear, the periphery of the focusing cam are provided with the focusing cam gear of annular, the focusing motor gear and focusing cam tooth
Wheel engagement, the focusing drawtube are provided with to limit the straight trough B of focusing cam guide pin.
8. big target surface double-view field varifocal lenses of LONG WAVE INFRARED according to claim 5, it is characterised in that：The correction group
Part includes the correction cabin that the rear end face for organizing lens barrel with after Jing sunk screw is spirally connected, and the inside in the correction cabin is hinged with a correction
Plate, the correcting plate are shaped as sector, and the circle centre position of the correcting plate is hinged on the inner bottom part in correction cabin, the correction component
Also include correcting motor, the correcting motor gear being connected with the output shaft of the correcting motor inside correction cabin is described
Correcting motor gear is engaged with an idler gear, circular arc week of the idler gear and correcting plate the gear teeth meshing in portion, driving
Correcting plate is rotated around the center of circle, and the side of the centrage of the correcting plate offers light hole, and the correcting motor is by correcting electricity
Machine support and correcting motor column are arranged on correction cabin, and the inside in the correction cabin is additionally provided with position limited inching switch component, institute
State the calibrated hatchway cover in correction cabin to be sealed, the inner bottom part for correcting cabin also is provided with light hole.
9. the big target surface double-view field varifocal lenses of LONG WAVE INFRARED according to claim 8, it is characterised in that：The correction
The rearward end of hatchway cover is provided with detector assembly.
Priority Applications (1)
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106154522A (en) * | 2016-08-22 | 2016-11-23 | 福建福光股份有限公司 | LONG WAVE INFRARED big target surface double-view field varifocal lens and Zooming method thereof |
| 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 |
| CN109512397A (en) * | 2018-12-25 | 2019-03-26 | 西安泰豪红外科技有限公司 | A kind of elevating medical thermal infrared imager |
| CN110716296A (en) * | 2019-10-30 | 2020-01-21 | 凯迈（洛阳）测控有限公司 | Large-target-surface miniaturized uncooled infrared continuous zooming optical system |
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2016
- 2016-08-22 CN CN201620913802.6U patent/CN206039017U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106154522A (en) * | 2016-08-22 | 2016-11-23 | 福建福光股份有限公司 | LONG WAVE INFRARED big target surface double-view field varifocal lens and Zooming method thereof |
| 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 |
| CN109512397A (en) * | 2018-12-25 | 2019-03-26 | 西安泰豪红外科技有限公司 | A kind of elevating medical thermal infrared imager |
| CN110716296A (en) * | 2019-10-30 | 2020-01-21 | 凯迈（洛阳）测控有限公司 | Large-target-surface miniaturized uncooled infrared continuous zooming optical system |
| CN110716296B (en) * | 2019-10-30 | 2021-09-14 | 凯迈（洛阳）测控有限公司 | Large-target-surface miniaturized uncooled infrared continuous zooming optical system |
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