CN106154522A - LONG WAVE INFRARED big target surface double-view field varifocal lens and Zooming method thereof - Google Patents
LONG WAVE INFRARED big target surface double-view field varifocal lens and Zooming method thereof Download PDFInfo
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- CN106154522A CN106154522A CN201610699315.9A CN201610699315A CN106154522A CN 106154522 A CN106154522 A CN 106154522A CN 201610699315 A CN201610699315 A CN 201610699315A CN 106154522 A CN106154522 A CN 106154522A
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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
Abstract
The present invention relates to a kind of LONG WAVE INFRARED big target surface double-view field varifocal lens, fix group A, zoom group B, rear fixing group C in the optical system of described camera lens before being sequentially provided with along light incident direction from left to right, described front fixing group A includes the first positive meniscus lens A 1；Described zoom group B includes double-concave negative lens B 1；After described, fixing group C includes biconvex positive lens C the 1, second positive meniscus lens C the 2, the 3rd positive meniscus lens C 3 set gradually from left to right.The optical system structure of this LONG WAVE INFRARED big target surface double-view field varifocal lens is simple, and lens construction length is short, volume is little easy to carry, has the advantages such as compact conformation, big target surface, high-resolution.
Description
Technical field
The present invention relates to a kind of LONG WAVE INFRARED big target surface double-view field varifocal lens and Zooming method thereof, relate to optical technology
Field.
Background technology
Infrared lens have capacity of resisting disturbance strong, can the work of round-the-clock round-the-clock, penetrate flue dust and haze ability is strong etc. excellent
Point.Along with the fast development of infrared imagery technique, the field such as safety monitoring infrared variable focal length optical system is had urgent should
Use demand.But existing infrared zoomlens area of bed is bigger than normal, carry inconvenience, target surface short focus little, long selects unreasonable,
Picture quality is the best, and search and identification ability to infrared target are limited, limit its range of application.
Summary of the invention
It is an object of the invention to for above weak point, it is provided that the LONG WAVE INFRARED big target surface double vision of a kind of simple in construction
Field varifocal lens and Zooming method thereof.
The technical scheme is that, a kind of LONG WAVE INFRARED big target surface double-view field varifocal lens, the optics of described camera lens
Group A, zoom group B, rear fixing group C, described front fixing group A is fixed along light incident direction from left to right before system is sequentially provided with
Including the first positive meniscus lens A-1；Described zoom group B includes double-concave negative lens B-1；After described, fixing group C includes from left to right
The biconvex positive lens C-1 that sets gradually, the second positive meniscus lens C-2, the 3rd positive meniscus lens C-3.
Further, between described front fixing group A and zoom group B, the airspace of short Jiao is 18.01mm, the air of focal length
Being spaced apart 43.88mm, between described zoom group B and rear fixing group C, the airspace of short Jiao is 43.23mm, between the air of focal length
It is divided into 17.36mm.
Further, the airspace between described biconvex positive lens C-1 and the second positive meniscus lens C-2 is 22.71mm,
Airspace between described second positive meniscus lens C-2 and the 3rd positive meniscus lens C-3 is 42.32mm.
Further, the frame for movement of described camera lens includes the zoom set gradually from left to right along the incident direction of light
Assembly, focusing component, light hurdle assembly, correction assembly, described zoom group B is located in zoom assembly.
Further, the frame for movement of described camera lens also includes that body tube, described zoom assembly include being positioned at body tube
The zoom balladeur train in portion, described zoom balladeur train be fixedly provided with zoom lens barrel；Described zoom balladeur train is joined by grinding with body tube
Conjunction is arranged on body tube, and the outside posterior segment of described body tube is provided with zoom cam, and described zoom cam is placed in by steel ball
On body tube, in order to form rolling bearing, and lock through cam trim ring；Offer on described zoom cam and move by optical zoom
The zoom curved groove of the requirement processing of equation, described zoom cam links together through zoom guide pin assembly with zoom balladeur train；Institute
The outside stating body tube is provided with zoom electric machine assembly, and described zoom electric machine assembly includes zoom motor and microswitch component, micro-
Nail dialled by dynamic switch, and described zoom motor is arranged on body tube by zoom electric machine support and zoom motor column；Described zoom
Connect on the output shaft of motor and have zoom motor gear, the rear end face of described zoom cam is bolted with the zoom cam tooth of annular
Wheel, described zoom motor gear engages with zoom cam wheel, and described body tube is provided with to limit zoom guide pin assembly
Straight trough A, the interior forward end of described body tube is bolted with front group of lens barrel, described before fixing 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 described zoom group B is arranged in zoom lens barrel, described double-concave negative lens
The front end of B-1 is provided with zoom trim ring, and described zoom balladeur train offers two steam vents, and the inside of described zoom balladeur train front end is empty
Gas is connected with the inner air of rear end through steam vent.
Further, it is provided with between front end and the outer surface of body tube of described zoom cam for guaranteeing focal length location standard
Really with stable focal length detent mechanism, described focal length detent mechanism includes positioning seat, along zoom cam on described positioning seat
Direction of rotation offers straight trough mouth, and described positioning seat is screwed onto the outer surface of body tube through the screw inserting straight trough mouth, described fixed
Offering end on the seat of position and run through the radial direction axis hole of positioning seat, the end of described radial direction axis hole is embedded with a steel ball, described steel
Pearl coordinates with radial axle interporal lacuna, and the top of described steel ball is provided with the pressing plate being embedded in radial direction axis hole, and described pressing plate is through pressing plate
The spring compression at top, in the top of steel ball, the external peripheral surface edge of described zoom cam front end offers several location
Groove, described steel ball is embedded at locating slot or is pressed on external peripheral surface, and the middle part of described spring is inserted with spring locating shaft, institute
The top stating radially axis hole is provided with spring pressuring ring.
Further, described focusing component includes that rear group of lens barrel, described rear group lens barrel are 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 described biconvex positive lens C-1 is arranged on through trim ring A
The front end of rear group of lens barrel, described second positive meniscus lens C-2 middle part of group lens barrel after trim ring B is arranged on, described after organize lens barrel
Interior rear end be provided with focusing drawtube, described 3rd positive meniscus lens C-3 is arranged on focusing drawtube, described focusing drawtube by with
Rear group of lens barrel grinds cooperation and is arranged on rear group of lens barrel, and the outside posterior segment of described rear group lens barrel is provided with focusing cam, described tune
Burnt cam coaxial is sheathed on rear group of lens barrel, and locks through focusing cam trim ring；Offer on described focusing cam and become by optics
The focusing curve groove of the requirement processing of the burnt equation of motion, described focusing cam and focusing drawtube are connected to one through focusing cam guide pin
Rise；The outside of described focusing drawtube is provided with focusing electric machine assembly, and described focusing electric machine assembly includes focus motor and microswitch
Assembly two, described focusing motor is arranged on focusing drawtube by focusing electric machine support and focusing motor column；Described focusing electricity
The focusing cam gear having focusing motor gear, the periphery of described focusing cam to be provided with annular is connected on the output shaft of machine, described
Focusing motor gear engages with focusing cam gear, and described focusing drawtube is provided with to limit the straight trough B of focusing cam guide pin.
Further, described correction assembly include through sunk screw with after organize the correction cabin that the rear end face of lens barrel is spirally connected, institute
State correction cabin inside be hinged with a correcting plate, described correcting plate be shaped as sector, the circle centre position of described correcting plate is hinged on
The inner bottom part in correction cabin, described correction assembly also includes correcting motor, and the output shaft of described correcting motor connects to be had and be positioned at school
Positive correcting motor gear within cabin, described correcting motor gear is engaged with an idler gear, described idler gear and correcting plate
Circular arc perimembranous on gear teeth meshing, drive correcting plate around the center of circle rotate, the side of the centrage of described correcting plate offers logical
Unthreaded hole, described correcting motor is arranged on correction cabin by correcting motor support and correcting motor column, described correction cabin interior
Portion is additionally provided with position limited inching switch assembly, and the calibrated hatchway cover in described correction cabin seals, and the inner bottom part in correction cabin also is provided with
Light hole.
Further, the rearward end of described correction hatchway cover is provided with detector assembly.
The Zooming method of a kind of LONG WAVE INFRARED big target surface double-view field varifocal lens, comprises the following steps:
(1) 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 assembly drive zoom balladeur train to move by the mode of zoom curved groove, limit at straight trough
Under, the rotary motion of zoom balladeur train becomes linear motion and carries out zoom.
Compared with prior art, the method have the advantages that (1) this LONG WAVE INFRARED big target surface double-view field zoom
The optical system structure of camera lens is simple, and lens construction assembling is compact, length is short, volume is little easy to carry, has compact conformation, big
The advantage such as target surface, high-resolution.(2) this lens focus is 40mm-120mm, and can mate pixel number is 640*512, Pixel size
Big target surface detector for 17um.
Accompanying drawing explanation
Below in conjunction with the accompanying drawings patent of the present invention is further illustrated.
Fig. 1 is optical system schematic diagram during short Jiao of this inventive embodiments；
Fig. 2 is optical system schematic diagram during this inventive embodiments focal length；
Fig. 3 is the frame for movement schematic diagram of this inventive embodiments；
Fig. 4 is the structural representation one of the zoom assembly of this inventive embodiments；
Fig. 5 is the structural representation two of the zoom assembly of this inventive embodiments；
Fig. 6 is the structural representation one of focal length detent mechanism；
Fig. 7 is the structural representation two of focal length detent mechanism；
Fig. 8 is the structural representation three of focal length detent mechanism；
Fig. 9 is the working state schematic representation of focal length detent mechanism；
Figure 10 is the structural representation one of the focusing component of this inventive embodiments；
Figure 11 is the structural representation two of the focusing component of this inventive embodiments；
Figure 12 is the structural representation one of the correction assembly of this inventive embodiments；
Figure 13 is the structural representation two of the correction assembly of this inventive embodiments；
Figure 14 is the contour structures schematic diagram one of this inventive embodiments；
Figure 15 is the contour structures schematic diagram two of this inventive embodiments；
Figure 16 is the contour structures schematic diagram three of this inventive embodiments；
Figure 17 is the contour structures schematic diagram four of this inventive embodiments；
In figure:
Fixing group A before A-；B-zoom group B；Fixing 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；C-3 the 3rd positive meniscus lens C-3；1-zoom assembly；2-focuses
Assembly；3-light hurdle assembly；4-corrects assembly；5-body tube；6-zoom balladeur train；7-zoom lens barrel；8-zoom cam；9-steel ball；
10-cam trim ring；11-zoom guide pin assembly；12-zoom motor；13-microswitch component；14-microswitch dials nail；15-becomes
Times electric machine support；16-zoom motor column；17-zoom motor gear；18-zoom cam wheel；19-straight trough A；Mirror is organized before 20-
Cylinder；Trim ring is organized before 21-；22-zoom trim ring；23-steam vent；24-focal length detent mechanism；25-positioning seat；26-straight trough mouth；27-
Radially axis hole；28-steel ball；29-pressing plate；30-spring；31-locating slot；32-spring locating shaft；33-spring pressuring ring；Group after 34-
Lens barrel；35-trim ring A；36-trim ring B；37-focusing drawtube；38-focusing cam；39-focusing cam trim ring；40-focusing cam is led
Nail；41-focuses motor；42-microswitch component two；43-focuses electric machine support；44-focuses motor column；45-focuses motor
Gear；46-focusing cam gear；47-straight trough B；48-corrects cabin；49-correcting plate；50-correcting motor；51-correcting motor tooth
Wheel；52-idler gear；The 53-gear teeth；54-light hole；55-correcting motor support；56-correcting motor column；The spacing fine motion of 57-
Switch module；58-corrects hatchway cover；59-detector assembly.
Detailed description of the invention
The present invention is further described with detailed description of the invention below in conjunction with the accompanying drawings.
As shown in Fig. 1～17, a kind of LONG WAVE INFRARED big target surface double-view field varifocal lens, in the optical system of described camera lens
Fixing group A, zoom group B, rear fixing group C before being sequentially provided with along light incident direction from left to right, described before fixing group A include the
One positive meniscus lens A-1；Described zoom group B includes double-concave negative lens B-1；After described, fixing group C includes setting the most successively
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, between described front fixing group A and zoom group B, the airspace of short Jiao (f=40mm) is
18.01mm, the airspace of focal length (f=120mm) is 43.88mm, the air of short Jiao between described zoom group B and rear fixing group C
Being spaced apart 43.23mm, the airspace of focal length is 17.36mm.
In the present embodiment, the airspace between described biconvex positive lens C-1 and the second positive meniscus lens C-2 is
22.71mm, the airspace between described second positive meniscus lens C-2 and the 3rd positive meniscus lens C-3 is 42.32mm.
In the present embodiment, the frame for movement of described camera lens includes setting gradually from left to right along the incident direction of light
Zoom assembly 1, focusing component 2, light hurdle assembly 3, correction assembly 4, described zoom group B is located in zoom assembly.
In the present embodiment, the frame for movement of described camera lens also includes that body tube 5, described zoom assembly include being positioned at primary mirror
Zoom balladeur train 6 within Tong, described zoom balladeur train be fixedly provided with zoom lens barrel 7；Described zoom balladeur train by with body tube
Grinding cooperation to be arranged on body tube, the outside posterior segment of described body tube is provided with zoom cam 8, and described zoom cam passes through steel
Pearl 9 is placed on body tube, in order to form rolling bearing, and locks through cam trim ring 10；Offer by light on described zoom cam
Learning the zoom curved groove of the requirement processing of zoom motion equation, described zoom cam is with zoom balladeur train through zoom guide pin assembly 11 even
It is connected together；The outside of described body tube is provided with zoom electric machine assembly, and described zoom electric machine assembly includes that zoom motor 12 is with micro-
Dynamic switch module 13, microswitch dial nail 14, and described zoom motor is pacified by zoom electric machine support 15 and zoom motor column 16
It is contained on body tube；Connect on the output shaft of described zoom motor and have zoom motor gear 17, the rear end face of described zoom cam
On be bolted with annular zoom cam wheel 18, described zoom motor gear engages with zoom cam wheel, on described body tube
Being provided with to limit the straight trough A19 of zoom guide pin assembly, the interior forward end of described body tube is bolted with front group of lens barrel 20, described before
Fixing group A is arranged in front group of lens barrel, and the front end of described first positive meniscus lens A-1 is provided with front group of trim ring 21, described zoom group B
Being arranged in zoom lens barrel, the front end of described double-concave negative lens B-1 is provided with zoom trim ring 22, and described zoom balladeur train offers two
Individual steam vent 23, the inner air of described zoom balladeur train front end is connected with the inner air of rear end through steam vent, it is to avoid zoom
When balladeur train moves forward and backward, inner air extruding causes driving zoom group to move, and zoom guide pin assembly uses upper and lower two rollers
Coordinate with straight trough A and the zoom curved groove of body tube respectively, improve quality of fit, thus improve focal length switching precision and optical axis steady
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 zoom cam wheel diameter as far as possible, improves zoom motor gear and zoom cam wheel
Gear ratio, improve zoom cam drive speed, it is achieved double-view field is switched fast.
In the present embodiment, described front group lens barrel material selection steel alloy, it is to avoid select the aluminium coefficient of expansion and optics material
Material coefficient of expansion difference excessive causing cannot meet-40 DEG C of-+55 DEG C of operating temperature requirements of low temperature.
In the present embodiment, on described body tube, integrated design has the square flange connected for camera lens.
In the present embodiment, it is provided with between front end and the outer surface of body tube of described zoom cam for guaranteeing that focal length is fixed
The focal length detent mechanism 24 that level is true and stable, it is achieved the accurate resetting of double-view field, described focal length detent mechanism includes location
Seat 25, on described positioning seat, the direction of rotation along zoom cam offers straight trough mouth 26, and described positioning seat is through inserting straight trough mouth
Screw be screwed onto the outer surface of body tube, described positioning seat offers end and runs through the radial direction axis hole 27 of positioning seat, described
Radially the end of axis hole is embedded with a steel ball 28, and described steel ball coordinates with radial axle interporal lacuna, and the top of described steel ball is provided with
Being embedded at the pressing plate 29 in radially axis hole, described pressing plate is pressed in the top of steel ball, described zoom through the spring 30 at pressing plate top
Several locating slots 31 are offered, outside described steel ball is embedded at locating slot or is pressed on the external peripheral surface edge of cam front end
On circumferential surface, the middle part of described spring is inserted with spring locating shaft 32, and the top of described radial direction axis hole is provided with spring pressuring ring 33,
By the degree of tightness of degree of tightness spring pressuring ring scalable steel ball Yu the locating slot of zoom cam, left and right adjusting positioning seat can make steel ball fall into
During locating slot, focal length just meets requirement, so may insure that the Stability and veracity that focal length positions.
In the present embodiment, described focusing component includes rear group of lens barrel 34, after described rear group lens barrel is bolted in body tube
On end face, the rear end of the front end edge body tube of described rear group lens barrel is stretched into inside body tube, and described biconvex positive lens C-1 is through trim ring
A35 is arranged on the front end of rear group of lens barrel, described second positive meniscus lens C-2 middle part of group lens barrel after trim ring B36 is arranged on, institute
The interior rear end stating rear group of lens barrel is provided with focusing drawtube 37, and described 3rd positive meniscus lens C-3 is arranged on focusing drawtube, described tune
Burnt lens barrel is arranged on rear group of lens barrel by grinding to coordinate with rear group of lens barrel, and the outside posterior segment of described rear group lens barrel is provided with focusing
Cam 38, described focusing cam coaxial sleeve is located on rear group of lens barrel, and is locked through focusing cam trim ring 39；On described focusing cam
Offering the focusing curve groove processed by the requirement of the optical zoom equation of motion, described focusing cam and focusing drawtube are convex through focusing
Wheel guide pin 40 links together；The outside of described focusing drawtube is provided with focusing electric machine assembly, and described focusing electric machine assembly includes adjusting
Burnt motor 41 and microswitch component 2 42, described focusing motor is installed by focusing electric machine support 43 and focusing motor column 44
On focusing drawtube；Connecting on the output shaft of described focusing motor and have focusing motor gear 45, the periphery of described focusing cam sets
Having the focusing cam gear 46 of annular, described focusing motor gear engages with focusing cam gear, and described focusing drawtube is provided with
In order to limit the straight trough B47 of focusing cam guide pin.
In the present embodiment, described correction assembly include through sunk screw with after organize the correction cabin that the rear end face of lens barrel is spirally connected
48, the inside in described correction cabin is hinged with a correcting plate 49, described correcting plate be shaped as sector, the circle centre position of described correcting plate
Being hinged on the inner bottom part in correction cabin, described correction assembly also includes correcting motor 50, and the output shaft of described correcting motor connects
Having the correcting motor gear 51 being positioned at correction within cabin, described correcting motor gear is engaged with an idler gear 52, described centre
Gear engages with the gear teeth 53 in the circular arc perimembranous of correcting plate, drives correcting plate to rotate around the center of circle, the centrage of described correcting plate
Side offer light hole 54, opposite side does not punches, and described correcting motor is stood by correcting motor support 55 and correcting motor
Post 56 is arranged on correction cabin, and the inside in described correction cabin is additionally provided with position limited inching switch assembly 57, and described correction cabin is calibrated
Hatchway cover 58 seals, and the inner bottom part in correction cabin also is provided with light hole, and when camera lens works, correcting plate forwards position of opening to, when
Infrared Detectors needs timing correcting plate to switch to not position of opening, the obstructed light of camera lens, it is achieved detector correction function, spacing
Correcting plate is carried out spacing when correcting plate standard-sized sheet, Guan Bi by microswitch component, it is ensured that accurate positioning, protects correcting motor simultaneously
Not stall.
In the present embodiment, the rearward end of described correction hatchway cover is provided with detector assembly 59, reduces structural member, effectively carries
High camera lens reliability.
In the present embodiment, high/low temperature (-40 DEG C ~ 60 DEG C) and remote is realized by the movement of the 3rd positive meniscus lens C-3
Low coverage compensates, and amount of movement is-1.2mm(low temperature) /+1.5mm(high temperature), it is negative, away from detector assembly near detector assembly
For just, i.e. this LONG WAVE INFRARED big target surface double-view field varifocal lens can realize zoom, focusing and three kinds of functions of temperature-compensating simultaneously,
Being applicable to the fields such as safety monitoring, in order to solve, existing infrared zoom system, pancreatic system size is bigger than normal, resolution is low, the burnt selection of length does not conforms 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.
The Zooming method of a kind of LONG WAVE INFRARED big target surface double-view field varifocal lens, comprises the following steps:
(1) 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 assembly drive zoom balladeur train to move by the mode of zoom curved groove, limit at straight trough
Under, the rotary motion of zoom balladeur train becomes linear motion and 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) angle of visual field: 2 ω=19.9 °～6.7 °；
(3) relative aperture: 1:1.0；
(4) it is suitable for spectral region: 8um～12um；
(5) operating temperature :-40 DEG C～+60 DEG C.
The object, technical solutions and advantages of the present invention are further described by above-listed preferred embodiment, are answered
It is understood by, the foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all essences in the present invention
Within god and principle, any modification, equivalent substitution and improvement etc. made, should be included within the scope of the present invention.
Claims (10)
1. a LONG WAVE INFRARED big target surface double-view field varifocal lens, it is characterised in that: along light in the optical system of described camera lens
Line incident direction from left to right fixes group A, zoom group B, rear fixing group C before being sequentially provided with, described front fixing group A is just including first
Meniscus lens A-1；Described zoom group B includes double-concave negative lens B-1；After described, fixing group C includes setting gradually from left to right
Biconvex positive lens C-1, the second positive meniscus lens C-2, the 3rd positive meniscus lens C-3.
LONG WAVE INFRARED the most according to claim 1 big target surface double-view field varifocal lens, it is characterised in that: fixing before described
Between group A and zoom group B, the airspace of short Jiao is 18.01mm, and the airspace of focal length is 43.88mm, described zoom group B with
Between rear fixing group C, the airspace of short Jiao is 43.23mm, and the airspace of focal length is 17.36mm.
LONG WAVE INFRARED the most according to claim 2 big target surface double-view field varifocal lens, it is characterised in that: described biconvex is just
Airspace between lens C-1 and the second positive meniscus lens C-2 is 22.71mm, described second positive meniscus lens C-2 and the 3rd
Airspace between positive meniscus lens C-3 is 42.32mm.
LONG WAVE INFRARED the most according to claim 3 big target surface double-view field varifocal lens, it is characterised in that: described camera lens
Zoom assembly that frame for movement includes setting gradually from left to right along the incident direction of light, focusing component, light hurdle assembly, correction
Assembly, described zoom group B is located in zoom assembly.
LONG WAVE INFRARED the most according to claim 4 big target surface double-view field varifocal lens, it is characterised in that: described camera lens
Frame for movement also includes that body tube, described zoom assembly include the zoom balladeur train being positioned within body tube, described zoom balladeur train
It is fixedly provided with zoom lens barrel；Described zoom balladeur train is arranged on body tube by grinding to coordinate with body tube, described body tube
Outside posterior segment be provided with zoom cam, described zoom cam is placed on body tube by steel ball, in order to form rolling bearing, and
Lock through cam trim ring；The zoom curved groove processed by the requirement of the optical zoom equation of motion is offered on described zoom cam,
Described zoom cam links together through zoom guide pin assembly with zoom balladeur train；The outside of described body tube is provided with zoom group of motors
Part, described zoom electric machine assembly includes that zoom motor and microswitch component, microswitch dial nail, and described zoom motor is by becoming
Times electric machine support and zoom motor column are arranged on body tube；Connect on the output shaft of described zoom motor and have zoom motor tooth
Wheel, the rear end face of described zoom cam is bolted with the zoom cam wheel of annular, described zoom motor gear and zoom cam
Gear engages, and described body tube is provided with to limit the straight trough A of zoom guide pin assembly, and the interior forward end of described body tube is spirally connected
Having front group of lens barrel, described front fixing group A to be arranged in front group of lens barrel, the front end of described first positive meniscus lens A-1 is provided with front group
Trim ring, described zoom group B is arranged in zoom lens barrel, and the front end of described double-concave negative lens B-1 is provided with zoom trim ring, described zoom
Offering two steam vents on balladeur train, the inner air of described zoom balladeur train front end is connected with the inner air of rear end through steam vent
Logical.
LONG WAVE INFRARED the most according to claim 5 big target surface double-view field varifocal lens, it is characterised in that: described zoom is convex
It is provided with for guaranteeing focal length accurate positioning and stable focal length detent mechanism between front end and the outer surface of body tube of wheel, described
Focal length detent mechanism includes positioning seat, and on described positioning seat, the direction of rotation along zoom cam offers straight trough mouth, described fixed
Position seat is screwed onto the outer surface of body tube through the screw inserting straight trough mouth, described positioning seat offers end and runs through positioning seat
Radially axis hole, the end of described radial direction axis hole is embedded with a steel ball, and described steel ball coordinates with radial axle interporal lacuna, described steel ball
Top be provided with the pressing plate being embedded in radially axis hole, described pressing plate through the spring compression at pressing plate top in the top of steel ball, institute
Stating and offer several locating slots on the external peripheral surface edge of zoom cam front end, described steel ball is embedded at locating slot or compression
On external peripheral surface, the middle part of described spring is inserted with spring locating shaft, and the top of described radial direction axis hole is provided with spring pressuring ring.
LONG WAVE INFRARED the most according to claim 5 big target surface double-view field varifocal lens, it is characterised in that: described focusing group
Part includes that rear group of lens barrel, described rear group lens barrel are bolted on the rear end face of body tube, the described rear front end edge body tube organizing lens barrel
Rear end stretch into inside body tube, described biconvex positive lens C-1 front end of group lens barrel after trim ring A is arranged on, described second just
Meniscus lens C-2 is the middle part of group lens barrel after trim ring B is arranged on, and the interior rear end of described rear group lens barrel is provided with focusing drawtube, described
3rd positive meniscus lens C-3 is arranged on focusing drawtube, after described focusing drawtube is by grinding with rear group of lens barrel and coordinating and be arranged on
On group lens barrel, the outside posterior segment of described rear group lens barrel is provided with focusing cam, and described focusing cam coaxial sleeve is located at rear group of lens barrel
On, and lock through focusing cam trim ring；The tune processed by the requirement of the optical zoom equation of motion is offered on described focusing cam
Burnt curved groove, described focusing cam links together through focusing cam guide pin with focusing drawtube；The outside of described focusing drawtube sets
Having focusing electric machine assembly, described focusing electric machine assembly to include focus motor and microswitch component two, described focusing motor passes through
Focusing electric machine support and focusing motor column are arranged on focusing drawtube；Connect on the output shaft of described focusing motor and have focusing electricity
Machine gear, the periphery of described focusing cam is provided with the focusing cam gear of annular, described focusing motor gear and focusing cam tooth
Wheel engagement, described focusing drawtube is provided with to limit the straight trough B of focusing cam guide pin.
LONG WAVE INFRARED the most according to claim 5 big target surface double-view field varifocal lens, it is characterised in that: described correction group
Part include through sunk screw with after organize the correction cabin that the rear end face of lens barrel is spirally connected, the inside in described correction cabin is hinged with a correction
Plate, described correcting plate be shaped as sector, the circle centre position of described correcting plate be hinged on correction cabin inner bottom part, described correction assembly
Also include correcting motor, the output shaft of described correcting motor connects and has the correcting motor gear being positioned at correction within cabin, described
Correcting motor gear is engaged with an idler gear, described idler gear and the gear teeth meshing in the circular arc perimembranous of correcting plate, drives
Correcting plate rotates around the center of circle, and the side of the centrage of described correcting plate offers light hole, and described correcting motor is by correction electricity
Machine support and correcting motor column are arranged on correction cabin, and the inside in described correction cabin is additionally provided with position limited inching switch assembly, institute
Stating the calibrated hatchway cover in correction cabin to seal, the inner bottom part in correction cabin also is provided with light hole.
9. according to the big target surface double-view field varifocal lens of the LONG WAVE INFRARED described in claim 5, it is characterised in that: described correction
The rearward end of hatchway cover is provided with detector assembly.
10. the Zooming method of a LONG WAVE INFRARED big target surface double-view field varifocal lens, it is characterised in that comprise the following steps:
(1) 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 assembly drive zoom balladeur train to move by the mode of zoom curved groove, limit at 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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| CN106154522A true CN106154522A (en) | 2016-11-23 |
| CN106154522B CN106154522B (en) | 2018-08-21 |
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| 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 |
| CN110412753A (en) * | 2019-08-08 | 2019-11-05 | 福建福光天瞳光学有限公司 | LONG WAVE INFRARED large aperture zoom lens and its focus adjustment method |
| CN111998801A (en) * | 2020-08-19 | 2020-11-27 | 哈尔滨新光光电科技股份有限公司 | Roll pendulum formula two-dimensional imaging mechanism |
| CN114690361A (en) * | 2021-12-31 | 2022-07-01 | 福建福光股份有限公司 | Medium wave capturing and tracking system |
| CN115308890A (en) * | 2022-10-12 | 2022-11-08 | 昆明全波红外科技有限公司 | Compact type long-wave manual zooming infrared lens |
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| CN115308890A (en) * | 2022-10-12 | 2022-11-08 | 昆明全波红外科技有限公司 | Compact type long-wave manual zooming infrared lens |
| 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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