CN106125276B - Object lens of large relative aperture, large area array long-wave infrared continuous zoom lens and working method - Google Patents
Object lens of large relative aperture, large area array long-wave infrared continuous zoom lens and working method Download PDFInfo
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- CN106125276B CN106125276B CN201610725745.3A CN201610725745A CN106125276B CN 106125276 B CN106125276 B CN 106125276B CN 201610725745 A CN201610725745 A CN 201610725745A CN 106125276 B CN106125276 B CN 106125276B
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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
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
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- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
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Abstract
The present invention relates to a kind of object lens of large relative aperture, large area array long-wave infrared continuous zoom lens, include preceding fixed group A, zoom group B, compensation group C and the rear fixed group D set gradually along light incident direction, fixed group A includes positive lens A 1 before described, the zoom group B includes negative lens B 1, the compensation group C includes positive lens C 1, and fixed group D includes negative lens D 1, negative lens D 2 and the positive lens D 3 set gradually along light incident direction after described；The invention further relates to the working methods of a kind of object lens of large relative aperture, large area array long-wave infrared continuous zoom lens.The focal power of reasonable distribution each group of the present invention, using Aspherical corrector aberration so that camera lens is 0.9 in complete burnt section F numbers, ensures the big visual field of camera lens, and have hi-vision contrast, big thang-kng amount in complete burnt segment limit.
Description
Technical field
The present invention relates to a kind of object lens of large relative aperture, large area array long-wave infrared continuous zoom lens and working methods.
Background technology
With the development of non-refrigerated infrared detector technique, long wave uncooled detector structure size reduces, cost reduction,
It is especially used in protection and monitor field extensive.In protection and monitor field, in order to realize that big visual field target search, small field of view are accurate
Target observations mostly use long wave continuous magnification lens.Most of security protection long wave continuous magnification lens at present, due to eyeglass mouth
The F values of the limitation of diameter, cost and relative aperture, focal length section can be bigger than normal, causes focal length section picture contrast and thang-kng amount to be compared short
Burnt section deviation so that most of long wave continuous magnification lens focal length section image effect deviations.And current most focal length continuous vari-focus
The matched detector of camera lens institute is 640 × 512,17 μm.
Invention content
In view of the deficiencies in the prior art, technical problem to be solved by the invention is to provide a kind of object lens of large relative aperture, big faces
Battle array long-wave infrared continuous zoom lens and working method, it is not only reasonable in design, it is efficiently convenient.
In order to solve the above-mentioned technical problem, the technical scheme is that：A kind of object lens of large relative aperture, large area array LONG WAVE INFRARED
Continuous magnification lens, it is characterised in that：Include preceding fixed group A, zoom group B, the compensation group C set gradually along light incident direction
And rear fixed group D, fixed group A includes positive lens A-1 before described, and the zoom group B includes negative lens B-1, the compensation group C
Including positive lens C-1, after described fixed group D include the negative lens D-1, the negative lens D-2 that are set gradually along light incident direction with
And positive lens D-3.
Preferably, the airspace between the positive lens A-1 and negative lens B-1 is 13 ~ 59.14mm, the negative lens
Airspace between B-1 and positive lens C-1 is 4.05 ~ 65.28mm, the air between the positive lens C-1 and negative lens D-1
Between be divided into 5.21 ~ 20.3mm, the airspace between the negative lens D-1 and negative lens D-2 be 8.45mm, the negative lens D-
Airspace between 2 and positive lens D-3 is 33.02mm.
Preferably, complete burnt section F numbers are 0.9, and matching large area array is 640 × 512, using 20 μm of detectors.
Preferably, the positive lens A-1 is fixed on preceding group lens barrel through upper arc pressuring plate setting up and down and arc lower pressing plate
Interior, the preceding group lens barrel is fixedly connected with body tube.
Preferably, the negative lens B-1 is fixed on through B piece trim rings in zoom lens barrel, and the zoom lens barrel is through connection screw thread
It is threadedly coupled with zoom Mobile base, the zoom Mobile base is fixedly connected with zoom guide sleeve, the negative lens B-1, the B pieces pressure
Circle, zoom lens barrel, zoom Mobile base and zoom guide sleeve form zoom component, and the positive lens C-1 is fixed on benefit through C piece trim rings
It repays in lens barrel, the compensation lens barrel is threadedly coupled through connection screw thread with compensation Mobile base, the compensation Mobile base and compensation guide sleeve
It is fixedly connected, positive lens C-1, C piece trim ring, compensation lens barrel, compensation Mobile base and compensation guide sleeve form compensation component, institute
The both ends that zoom guide sleeve is set in guide rod with compensation guide sleeve are stated, are arranged with body tube outside the zoom component and compensation component, institute
It states and is provided with zoom straight trough on body tube, the body tube housing is provided with zoom cam, and the zoom cam is through steel ball and master
Microscope base is connected and compresses to form rolling bearing structure with zoom cam trim ring, and two zoom songs are provided on the zoom cam
One end of wire casing, zoom guide pin is fixedly connected with zoom guide sleeve, the other end of the zoom guide pin pass through zoom straight trough with wherein
One zoom curved groove is slidably matched, and the one end for compensating guide pin is fixedly connected with compensation guide sleeve, the other end of the compensation guide pin
It is slidably matched across zoom straight trough and wherein another zoom curved groove, the guide rod is fixed on body tube through zoom cam cover
On.
Preferably, zoom motor component is provided with outside the body tube, the zoom motor component includes zoom motor, becomes
Burnt motor gear, potentiometer, potentiometer gear, zoom third wheel and zoom limit switch, the zoom motor and potentiometer are equal
It is placed on body tube by zoom motor frame, zoom limiting bracket is placed on body tube, and the zoom motor gear passes through
Zoom third wheel is engaged with the gear in potentiometer gear and zoom cam respectively, the positive and negative rotation driving of rotor of the zoom motor
The rotor of potentiometer is rotated synchronously with zoom cam.
Preferably, the negative lens D-1 and negative lens D-2 is front and back is arranged in DE microscope bases and is compressed with E piece trim rings, described
DE spacer rings are provided between negative lens D-1 and negative lens D-2, the DE microscope bases are arranged through screw before the inner cavity of rear group lens barrel
End, the positive lens D-3 are arranged in F lens barrels and are compressed with F piece trim rings, and the F lens barrels are embedding to be set on the interior of rear group lens barrel
Cavity rear end, the F lens barrels are slidably matched with rear group lens barrel, and focusing straight trough, the rear group lens barrel are provided in the rear group lens barrel
It is arranged with focusing cam outside, focusing curve slot is provided on the focusing cam, company is fixed in the one end and F lens barrels for focusing guide pin
It connects, the other end for focusing guide pin is slidably matched across straight trough with focusing curve slot, the focusing cam line focus cam pressure
Circle is arranged in rear group lens barrel.
Preferably, be provided with focus motor component outside the rear group lens barrel, the focus motor component include focus motor,
Focus motor frame focuses microswitch, focuses limiting bracket focusing third wheel, and the focus motor line focus motor rack is arranged rear
On group lens barrel, the focusing microswitch line focus limiting bracket is arranged in rear group lens barrel, and the rotor of the focus motor revolves
Transhipment moves line focus third wheel and drives focusing cam rotation.
Preferably, detector corrective component, the detector corrective component packet are fixed with through screw in the rear group lens barrel
Containing light barrier, the panel seat that is in the light, light barrier cover, correction microswitch frame, correction microswitch, CCD connecting flanges, detector, school
Positive third wheel, correcting motor axle sleeve, correcting motor gear, correcting motor frame and correcting motor, the correcting motor gear and school
Positive third wheel transmission engagement, the correction third wheel are engaged with light barrier transmission, and the middle part of the light barrier is through being hinged on the panel seat that is in the light
On, the upper eccentric setting of the light barrier has through-hole, two correction microswitches to pacify respectively by correcting microswitch frame
The panel seat both sides of being in the light being mounted in, the rotor of the baffle motor rotate calibrated third wheel and drive light barrier rotation.
A kind of working method of object lens of large relative aperture, large area array long-wave infrared continuous zoom lens, including it is above-mentioned big opposite
Aperture, large area array long-wave infrared continuous zoom lens, which is characterized in that comprise the steps of：
（1）Linear motion close to each other is done between the positive lens A-1, negative lens B-1 or is located remotely from each other linear motion, it is real
Existing system continuous vari-focus is adjusted；
（2）The positive lens D-3 is done close to negative lens D-2 linear motions or far from negative lens D-2 linear motions, realizes system
System focus adjustment.
Compared with prior art, the invention has the advantages that：（1）In optical texture, reasonable distribution each group
Focal power, using Aspherical corrector aberration so that camera lens is 0.9 in complete burnt section F numbers, ensures the big visual field of camera lens, and in complete burnt section
Range has hi-vision contrast, big thang-kng amount；（2）In optical design, by the positive lens D-3 movement in latter fixed group come
Temperature-compensating and distance are realized away from compensation, to ensure requirement of the camera lens under high temperature and low temperature environment；（3）In optical design
In, by the ghost image for optimizing and revising system so that for secondary reflection ghost image far from detector image planes；（4）With electronic continuous change
Coke, Power focus, detector correction mechanism and the functions such as focal length is preset, it can be achieved that control automation, ensureing that structure is tight
Under the premise of gathering, a series of measures is taken, improves camera lens vibration resistance, the ability of impact.
The present invention will be further described in detail with reference to the accompanying drawings and detailed description.
Description of the drawings
Fig. 1 is the optical system schematic diagram of the embodiment of the present invention.
Fig. 2 is the first schematic diagram of overall construction of the embodiment of the present invention.
Fig. 3 is the second schematic diagram of overall construction of the embodiment of the present invention.
Fig. 4 is the first schematic diagram of electric continuous zooming heat of embodiment of the present invention construction.
Fig. 5 is the second schematic diagram of electric continuous zooming heat of embodiment of the present invention construction.
Fig. 6 is the third schematic diagram of electric continuous zooming heat of embodiment of the present invention construction.
Fig. 7 is the 4th schematic diagram of electric continuous zooming heat of embodiment of the present invention construction.
Fig. 8 is the 5th schematic diagram of electric continuous zooming heat of embodiment of the present invention construction.
Fig. 9 is the first schematic diagram of Power focus of embodiment of the present invention construction.
Figure 10 is the second schematic diagram of Power focus of embodiment of the present invention construction.
Figure 11 is the third schematic diagram of Power focus of embodiment of the present invention construction.
Figure 12 is the first schematic diagram of detector correction of embodiment of the present invention construction.
Figure 13 is the second schematic diagram of detector correction of embodiment of the present invention construction.
Figure 14 is the organigram of light barrier of the embodiment of the present invention.
Figure 15 is that the embodiment of the present invention is transport random vibration spectrum.
In figure：1- positive lens A-1,2- negative lens B-1,3- positive lens C-1,4- negative lens D-1,5- negative lens D-2,6- are just
The upper arc pressuring plates of lens D-3,7-, 8- arc lower pressing plates, 9- preceding group lens barrels, 10- body tubes, 11-B piece trim rings, 12- zoom mirrors
Cylinder, 13- zoom Mobile bases, 14- zoom guide sleeves, 15-C piece trim rings, 16- compensate lens barrel, and 17- compensates Mobile base, and 18- compensation is led
Set, 19- guide rods, 20- zoom straight troughs, 21- zoom cams, 22- steel balls, 23- zoom cam trim rings, 24- zoom curved grooves, 25-
Zoom guide pin, 26- compensation guide pins, 27- zoom cam covers, 28- zoom motors, 29- zoom motor gears, 30- potentiometers,
31- potentiometer gears, 32- zoom third wheels, 33- zoom limit switches, 34- zoom motor framves, 35- zoom limiting brackets, 36-DE
Microscope base, 37-E piece trim rings, 38-DE spacer rings, 39-F lens barrels, 40-F piece trim rings, 41- rear group lens barrels, 42- focus straight trough, and 43- is focused
Cam, 44- focusing curve slots, 45- focus guide pin, and 46- focuses cam trim ring, 47- focus motors, 48- focus motor framves, 49-
Microswitch is focused, 50- focuses limiting bracket, and 51- focuses third wheel, 52- light barriers, and 53- is in the light panel seat, 54- light barrier covers,
55- corrects microswitch frame, and 56- corrects microswitch, 57-CCD connecting flanges, 58- detectors, 59- correction third wheels, the schools 60-
Positive motor axle sleeve, 61- correcting motor gears, 62- correcting motor framves, 63- correcting motors.
Specific implementation mode
To make the foregoing features and advantages of the present invention clearer and more comprehensible, special embodiment below, and coordinate attached drawing, make detailed
Carefully it is described as follows.
As shown in Fig. 1 ~ 15, a kind of object lens of large relative aperture, large area array long-wave infrared continuous zoom lens, it is characterised in that：Packet
Include preceding fixed group A, zoom group B, compensation group C and the rear fixed group D set gradually along light incident direction, fixed group before described
A includes positive lens A-1, and the zoom group B includes negative lens B-1, and the compensation group C includes positive lens C-1, fixed group after described
D includes negative lens D-1, negative lens D-2 and the positive lens D-3 set gradually along light incident direction.
In embodiments of the present invention, the airspace between the positive lens A-1 and negative lens B-1 is 13 ~ 59.14mm,
Airspace between the negative lens B-1 and positive lens C-1 is 4.05 ~ 65.28mm, the positive lens C-1 and negative lens D-1
Between airspace be 5.21 ~ 20.3mm, airspace between the negative lens D-1 and negative lens D-2 is 8.45mm, institute
It is 33.02mm to state the airspace between negative lens D-2 and positive lens D-3.
In embodiments of the present invention, complete burnt section F numbers are 0.9, and matching large area array is 640 × 512, using 20 μm of detectors
58。
In embodiments of the present invention, the positive lens A-1 is solid through upper arc pressuring plate 7 setting up and down and arc lower pressing plate 8
It is scheduled in preceding group lens barrel 9, the preceding group lens barrel 9 is fixedly connected with body tube 10；The upper arc pressuring plate 7 and arc lower pressing plate 8
Under the premise of ensureing camera lens F numbers, camera lens appearance and size is substantially reduced, holding structure is compact.
In embodiments of the present invention, the negative lens B-1 is fixed on through B pieces trim ring 11 in zoom lens barrel 12, the zoom
Lens barrel 12 is threadedly coupled through connection screw thread with zoom Mobile base 13, and the zoom Mobile base 13 is fixedly connected with zoom guide sleeve 14,
The negative lens B-1, the B pieces trim ring 11, zoom lens barrel 12, zoom Mobile base 13 and zoom guide sleeve 14 form zoom group
Part, the positive lens C-1 are fixed on through C pieces trim ring 15 in compensation lens barrel 16, and the compensation lens barrel 16 is through connection screw thread and compensation
Mobile base 17 is threadedly coupled, and the compensation Mobile base 17 is fixedly connected with compensation guide sleeve 18, positive lens C-1, C piece trim ring
15, lens barrel 16, compensation Mobile base 17 and compensation guide sleeve 18 are compensated and forms compensation component, the zoom guide sleeve 14 and compensation guide sleeve
18 are set in the both ends of guide rod 19, are arranged with body tube 10 outside the zoom component and compensation component, are set on the body tube 10
It is equipped with zoom straight trough 20,10 housing of the body tube is provided with zoom cam 21, and the zoom cam 21 is through steel ball 22 and primary mirror
Seat is connected and forms rolling bearing structure with the compression of zoom cam trim ring 23, and the rolling bearing structure revolves zoom cam 21
Sliding friction when turning is changed into rolling friction, to reduce frictional force when zoom cam 21 rotates, on the zoom cam 21
Two zoom curved grooves 24 are provided with, one end of zoom guide pin 25 is fixedly connected with zoom guide sleeve 14, the zoom guide pin 25
The other end is slidably matched across zoom straight trough 20 with a wherein zoom curved groove 24, compensates one end and the compensation guide sleeve of guide pin 26
18 are fixedly connected, and the other end of the compensation guide pin 26 passes through zoom straight trough 20 to match with the wherein another sliding of zoom curved groove 24
It closes, the guide rod 19 is fixed on through 21 cover board of zoom cam on body tube 10；The zoom cam 21 presses optical zoom movement side
The requirement processing zoom of journey, zoom curved groove 24 are uniformly distributed, respectively with the zoom guide pin 25 and compensation guide pin 26 zoom
Cam 21 links together with zoom component, compensation component, strictly control the zoom guide pin 25 and compensation guide pin 26 with it is opposite
24 direct fit clearance of zoom curved groove is answered, ensures that zoom component, compensation component slide steadily comfortably, without clamping stagnation, the change
The rotation of burnt cam 21 drives zoom component, compensation component along 20 phase of zoom straight trough through zoom guide pin 25 and compensation guide pin 26 respectively
Mutually close to moving along a straight line or being located remotely from each other linear motion, electric continuous zooming heat is realized.
In embodiments of the present invention, zoom motor component, the zoom motor component packet are provided with outside the body tube 10
Containing zoom motor 28, zoom motor gear 29, potentiometer 30, potentiometer gear 31, zoom third wheel 32 and zoom limit switch
33, the zoom motor 28 is placed in by zoom motor frame 34 on body tube 10 with potentiometer 30, zoom limiting bracket 35
Be placed on body tube 10, the zoom motor gear 29 by zoom third wheel 32 respectively with potentiometer gear 31 and zoom cam
The rotor of gear engagement on 21, the positive and negative rotation driving potentiometer 30 of rotor of the zoom motor 28 is synchronous with zoom cam 21
Rotation；It is rotated by the zoom motor and realizes that zoom component and compensation component make tandem fortune by zoom motion equation requirement
It is dynamic, to realize the continuous variable function of system focal length, when the focal length of system changes, potentiometer gear 31 by with change
Gear engagement on burnt cam 21, makes the potentiometer 30 rotate, then the resistance value of the potentiometer 30 changes, by appropriate
Sample circuit can take out the changing value of the potentiometer 30, and control centre is transmitted to, to realize the display of zoom level；Instead
It, order is provided by control centre, it can be achieved that focal length real-time control.
In embodiments of the present invention, the front and back setting of the negative lens D-1 and negative lens D-2 is in DE microscope bases 36 and with E pieces
Trim ring 37 compresses, and DE spacer rings 38 is provided between the negative lens D-1 and negative lens D-2, the DE microscope bases 36 are arranged through screw
In the inner cavity front end of rear group lens barrel 41, the positive lens D-3 settings compress in F lens barrels 39 and with F pieces trim ring 40, the F mirrors
The 39 embedding intracavity posterior ends for being set on rear group lens barrel 41 of cylinder, positive lens D-3, F lens barrel 39 and F pieces trim ring 40, which are formed, to be focused
Component, the F lens barrels 39 are slidably matched with rear group lens barrel 41, are provided in the rear group lens barrel 41 and focus straight trough 42, after described
It is arranged with outside group lens barrel 41 and focuses cam 43, focusing curve slot 44 is provided on the focusing cam 43, focus the one of guide pin 45
End is fixedly connected with F lens barrels 39, and the other end for focusing guide pin 45, which passes through to focus straight trough 42 and slide with focusing curve slot 44, matches
It closes, 43 line focus cam trim ring 46 of the focusing cam is arranged in rear group lens barrel 41.
In embodiments of the present invention, focus motor component, the focus motor component are provided with outside the rear group lens barrel 41
Including focus motor 47, focus motor frame 48, focusing microswitch 49, focusing limiting bracket 50 and focusing third wheel 51, described
47 line focus motor rack 48 of focus motor is arranged in rear group lens barrel 41, the 49 line focus limiting bracket 50 of focusing microswitch
It is arranged in rear group lens barrel 41, the rotor rotational movement line focus third wheel 51 of the focus motor 47, which drives, focuses 43 turns of cam
Dynamic, the focusing cam 43 rotates line focus guide pin 45 and focus pack is driven to move along a straight line along straight trough 42 is focused, to realize
Power focus.
In embodiments of the present invention, detector corrective component, the detection are fixed with through screw in the rear group lens barrel 41
Device corrective component include light barrier 52, the panel seat 53 that is in the light, light barrier cover 54, correction microswitch frame 55, correction microswitch 56,
CCD connecting flanges 57, detector 58, correction third wheel 59, correcting motor axle sleeve 60, correcting motor gear 61, correcting motor frame 62
And correcting motor 63, the correcting motor gear 61 are engaged with the correction transmission of third wheel 59, the correction third wheel 59 and light barrier
52 transmission engagements, the middle part of the light barrier 52 are in the light through being hinged on panel seat 53, and the upper eccentric setting of the light barrier 52 has
Through-hole, 53 both sides of panel seat of being in the light that two correction microswitches 56 are separately mounted to by correcting microswitch frame 55, institute
The rotor for stating baffle motor rotates the calibrated drive of third wheel 59 rotation of light barrier 52, plays the role of switching, realizes detector 58
Correction.
In embodiments of the present invention, the working method of a kind of object lens of large relative aperture, large area array long-wave infrared continuous zoom lens,
Including above-mentioned object lens of large relative aperture, large area array long-wave infrared continuous zoom lens, comprise the steps of：
（1）Linear motion close to each other is done between the positive lens A-1, negative lens B-1 or is located remotely from each other linear motion, it is real
Existing system continuous vari-focus is adjusted；
（2）The positive lens D-3 is done close to negative lens D-2 linear motions or far from negative lens D-2 linear motions, realizes system
System focus adjustment.
In embodiments of the present invention, to reach in optical design full focal length section inner optical system high imaging quality,
Compact, therefore to simplify optical facilities as possible under the premise of ensureing optical system imaging quality, reduce the body of optical system
Product.Visible luminescent material is compared due to infra-red material and absorbs larger, but refractive index is also high, so in the design, being not usually required to make
With too many eyeglass, otherwise the transmitance of system can be very poor, can influence final imaging effect.Processing technology is fully considered in design
Factor, at the same introduce it is aspherical come balance system aberration so that the structure of optical system is more simplified, and image quality is more preferable.
In embodiments of the present invention, using optical design software, rational Optimal Parameters are set, it is initial to what is be calculated
Structure optimizes, using "+,-,+,-" Zoom structure form.System is made of six-element lens, and each eyeglass craftsmanship is good
It is good, it is easy to process.It is aspherical using 2 for aberration correction so that system image quality is excellent, and structure is tight in optical design
It gathers.Photosystem volume is 195 mm（It is long）×144mm（It is wide）×144mm（It is high）, optical weight 1130g.
In embodiments of the present invention, in order to meet the requirement of operating temperature, (i.e. 55 DEG C of high temperature, when -40 DEG C of low temperature, system
It is notheated the influence of stress, and eyeglass is made to generate flexural deformation, to influence the image quality of product.) require the mirror selected
The cylinder material coefficient of expansion is smaller, and with the expansion coefficient similar of glass.By distribution type, select and glass material coefficient of expansion phase
Materials of the close low-alloy steel 16Mn as preceding group lens barrel 9, the coefficient of expansion are 8.31 × 10-6Mm/ DEG C with glass material 8 ×
10-6Mm/ DEG C very close.It can ensure in this way in temperature is tested (temperature change 95 DEG C in the case of), frame and glass
Expansion（It shrinks）Difference is much smaller than the fit clearance of frame and glass, to ensure camera lens 95 DEG C of the variation of ambient temperature the case where
Under, the image quality of system will not change.
The present invention is not limited to above-mentioned preferred forms, anyone can show that other are each under the inspiration of the present invention
Object lens of large relative aperture, large area array long-wave infrared continuous zoom lens and the working method of kind form.It is all according to the present patent application patent model
Done equivalent changes and modifications are enclosed, the covering scope of the present invention should be all belonged to.
Claims (9)
1. a kind of object lens of large relative aperture, large area array long-wave infrared continuous zoom lens, it is characterised in that：Including along light incident direction
Preceding fixed group A, zoom group B, compensation group C and the rear fixed group D set gradually, fixed group A includes positive lens A-1 before described,
The zoom group B includes negative lens B-1, and the compensation group C includes positive lens C-1, and fixed group D includes along light incidence after described
Negative lens D-1, the negative lens D-2 and positive lens D-3 that direction is set gradually, between the positive lens A-1 and negative lens B-1
Airspace is 13 ~ 59.14mm, and the airspace between the negative lens B-1 and positive lens C-1 is 4.05 ~ 65.28mm, institute
State airspace between positive lens C-1 and negative lens D-1 be 5.21 ~ 20.3mm, the negative lens D-1 and negative lens D-2 it
Between airspace be 8.45mm, airspace between the negative lens D-2 and positive lens D-3 is 33.02mm.
2. object lens of large relative aperture according to claim 1, large area array long-wave infrared continuous zoom lens, it is characterised in that：Entirely
Burnt section F numbers are 0.9, and matching large area array is 640 × 512, using 20 μm of detectors.
3. object lens of large relative aperture according to claim 1, large area array long-wave infrared continuous zoom lens, it is characterised in that：Institute
Positive lens A-1 is stated to be fixed in preceding group lens barrel through upper arc pressuring plate setting up and down and arc lower pressing plate, the preceding group lens barrel with
Body tube is fixedly connected.
4. object lens of large relative aperture according to claim 1, large area array long-wave infrared continuous zoom lens, it is characterised in that：Institute
It states negative lens B-1 to be fixed in zoom lens barrel through B piece trim rings, the zoom lens barrel connects through connection screw thread and zoom Mobile base screw thread
It connects, the zoom Mobile base is fixedly connected with zoom guide sleeve, and the negative lens B-1, the B pieces trim ring, zoom lens barrel, zoom are moved
Dynamic seat and zoom guide sleeve form zoom component, and the positive lens C-1 is fixed on through C piece trim rings in compensation lens barrel, the compensation
Lens barrel is threadedly coupled through connection screw thread with compensation Mobile base, and the compensation Mobile base is fixedly connected with compensation guide sleeve, described just saturating
Mirror C-1, C piece trim ring, compensation lens barrel, compensation Mobile base and compensation guide sleeve form compensation component, the zoom guide sleeve and compensation
Guide sleeve is set in the both ends of guide rod, is arranged with body tube outside the zoom component and compensation component, is provided on the body tube
Zoom straight trough, the body tube housing are provided with zoom cam, and the zoom cam is connected with primary mirror seat through steel ball and uses change
Burnt cam trim ring compresses to form rolling bearing structure, and two zoom curved grooves are provided on the zoom cam, zoom guide pin
One end is fixedly connected with zoom guide sleeve, and the other end of the zoom guide pin passes through zoom straight trough to be slided with a wherein zoom curved groove
Dynamic cooperation, the one end for compensating guide pin are fixedly connected with compensation guide sleeve, and the other end of the compensation guide pin passes through zoom straight trough and its
In another zoom curved groove be slidably matched, the guide rod is fixed on through zoom cam cover on body tube.
5. object lens of large relative aperture according to claim 4, large area array long-wave infrared continuous zoom lens, it is characterised in that：Institute
It states and is provided with zoom motor component outside body tube, the zoom motor component includes zoom motor, zoom motor gear, current potential
Device, potentiometer gear, zoom third wheel and zoom limit switch, the zoom motor are pacified by zoom motor frame with potentiometer
Set on body tube, zoom limiting bracket is placed on body tube, the zoom motor gear by zoom third wheel respectively with electricity
Gear engagement on position device gear and zoom cam, the rotor of the positive and negative rotation driving potentiometer of rotor of the zoom motor and change
Times cam rotates synchronously.
6. object lens of large relative aperture according to claim 1, large area array long-wave infrared continuous zoom lens, it is characterised in that：Institute
It states the front and back settings of negative lens D-1 and negative lens D-2 to compress in DE microscope bases and with E piece trim rings, the negative lens D-1 and negative lens
DE spacer rings are provided between D-2, the DE microscope bases are arranged through screw in the inner cavity front end of rear group lens barrel, and the positive lens D-3 is set
Set in F lens barrels and compressed with F piece trim rings, the embedding intracavity posterior end for being set on rear group lens barrel of F lens barrels, the F lens barrels with
Rear group lens barrel is slidably matched, and focusing straight trough is provided in the rear group lens barrel, focusing cam, institute are arranged with outside the rear group lens barrel
It states to focus and is provided with focusing curve slot on cam, the one end for focusing guide pin is fixedly connected with F lens barrels, described to focus the another of guide pin
End is slidably matched across straight trough and focusing curve slot, and the focusing cam line focus cam trim ring is arranged in rear group lens barrel.
7. object lens of large relative aperture according to claim 6, large area array long-wave infrared continuous zoom lens, it is characterised in that：Institute
It states and is provided with focus motor component outside rear group lens barrel, the focus motor component is micro- comprising focus motor, focus motor frame, focusing
Dynamic switch focuses limiting bracket focusing third wheel, and the focus motor line focus motor rack is arranged in rear group lens barrel, the focusing
Microswitch line focus limiting bracket is arranged in rear group lens barrel, and wheel belt is crossed in the rotor rotational movement line focus of the focus motor
It is dynamic to focus cam rotation.
8. object lens of large relative aperture according to claim 7, large area array long-wave infrared continuous zoom lens, it is characterised in that：Institute
State and be fixed with detector corrective component through screw in rear group lens barrel, the detector corrective component include light barrier, the panel seat that is in the light,
Light barrier cover, correction microswitch frame, correction microswitch, CCD connecting flanges, detector, correction third wheel, correcting motor axis
Set, correcting motor gear, correcting motor frame and correcting motor, the correcting motor gear are engaged with correction third wheel transmission, institute
State correction third wheel and light barrier and be driven and engage, the middle part of the light barrier is in the light through being hinged on panel seat, the light barrier it is upper
Eccentric setting has through-hole, the panel seat two that is in the light that two correction microswitches are separately mounted to by correcting microswitch frame
Side, the rotor of baffle motor rotate calibrated third wheel and drive light barrier rotation.
9. the working method of a kind of object lens of large relative aperture, large area array long-wave infrared continuous zoom lens, including such as claim 1 ~ 8 times
Object lens of large relative aperture, large area array long-wave infrared continuous zoom lens described in meaning one, which is characterized in that comprise the steps of：
（1）Linear motion close to each other is done between the positive lens A-1, negative lens B-1 or is located remotely from each other linear motion, realizes system
Continuous vari-focus of uniting is adjusted；
（2）The positive lens D-3 is done close to negative lens D-2 linear motions or far from negative lens D-2 linear motions, realizes that system is poly-
Coke is adjusted.
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| CN201610725745.3A CN106125276B (en) | 2016-08-26 | 2016-08-26 | Object lens of large relative aperture, large area array long-wave infrared continuous zoom lens and working method |
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| CN201610725745.3A CN106125276B (en) | 2016-08-26 | 2016-08-26 | Object lens of large relative aperture, large area array long-wave infrared continuous zoom lens and working method |
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| CN106125276B true CN106125276B (en) | 2018-08-21 |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109725478A (en) * | 2017-10-30 | 2019-05-07 | 深圳光峰科技股份有限公司 | A kind of projector's motor-driven lens displacement structure and projector |
| CN107976791B (en) * | 2017-11-20 | 2020-02-07 | 湖北久之洋红外系统股份有限公司 | Super-large-magnification continuous zooming uncooled infrared lens |
| CN108040195B (en) * | 2017-12-13 | 2020-10-02 | 湖北华中光电科技有限公司 | Fog-penetrating television system based on continuous zoom lens |
| CN109375333A (en) * | 2018-12-21 | 2019-02-22 | 厦门力鼎光电股份有限公司 | A kind of lens construction |
| CN110579866B (en) * | 2019-09-18 | 2021-09-28 | 北京小眼探索科技有限公司 | Compact infrared visible common-light-path zooming optical system and target detection method |
| CN111123461A (en) * | 2020-01-10 | 2020-05-08 | 中山联合光电科技股份有限公司 | Optical lens structure |
| CN113514928B (en) * | 2021-07-28 | 2024-10-11 | 浙江大立科技股份有限公司 | Three-component linkage assembly for continuous zoom lens and continuous zoom lens |
| CN114061748B (en) * | 2021-11-19 | 2024-06-21 | 南通智能感知研究院 | Infrared detection device with multichannel optical filter wheel |
| CN114280881B (en) * | 2021-12-23 | 2024-06-07 | 青岛海信激光显示股份有限公司 | Illumination system and laser projection apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| IL89301A (en) * | 1989-02-15 | 1993-04-04 | Electro Optics Ind Ltd | Zoom system |
| JP4383078B2 (en) * | 2002-04-22 | 2009-12-16 | オリンパス株式会社 | Telephoto lens and telephoto lens device |
| CN102866485B (en) * | 2012-09-06 | 2015-05-06 | 中国电子科技集团公司第十一研究所 | Long-wavelength infrared continuous zoom lens |
| CN103631003B (en) * | 2013-11-25 | 2015-12-02 | 福建福光股份有限公司 | LONG WAVE INFRARED refrigeration mode long-focus, heavy caliber, Large visual angle camera lens |
| CN104820280A (en) * | 2015-05-19 | 2015-08-05 | 昆明全波红外科技有限公司 | Continuous zooming infrared lens |
| CN206039018U (en) * | 2016-08-26 | 2017-03-22 | 福建福光股份有限公司 | Large relative aperture , big area array long wave infrared continuous -zoom lens |
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