CN206002755U - A kind of multi-view-field long ripple infrared zoom optical system and thermal infrared imager - Google Patents
A kind of multi-view-field long ripple infrared zoom optical system and thermal infrared imager Download PDFInfo
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- CN206002755U CN206002755U CN201620978085.5U CN201620978085U CN206002755U CN 206002755 U CN206002755 U CN 206002755U CN 201620978085 U CN201620978085 U CN 201620978085U CN 206002755 U CN206002755 U CN 206002755U
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Abstract
The utility model discloses a kind of multi-view-field long ripple infrared zoom optical system, including doubling microscope group, front fixing lens, motion microscope group, speculum group and afterwards fixing microscope group, described double microscope group and double lens and second by first and double lens form, described motion microscope group includes variable focus lens package and offset lens, described variable focus lens package is made up of the first zoom lens and the second zoom lens, described speculum group is made up of orthogonal first reflecting mirror and the second reflecting mirror, described rear fixing microscope group fixes lens after including first, lens are fixed after second, lens are fixed after fixing lens and the 4th after 3rd, fix lens beam projecting side after described the 4th and be provided with detector assembly；Also disclose a kind of thermal infrared imager, including support frame and multi-view-field long ripple infrared zoom optical system；This optical system is capable of six grades of focal lengths and visual field altogether, is obviously improved the performance of thermal infrared imager, has more preferable adaptability and practicality.
Description
Technical field
This utility model belongs to infrared imaging optical system and in particular to a kind of infrared zoom light of suitching type multi-view-field long ripple
System, and the thermal infrared imager using this LONG WAVE INFRARED varifocal optical system.
Background technology
Current infrared thermal imaging product obtains tremendous development, due to having round-the-clock observing capacity round the clock, in a large number by with
In numerous areas such as monitoring, warning, supervision, scouting, forest fire protections.And infrared optical system then assume responsibility for collecting the external world wherein
Infrared energy radiation and the effect of focal imaging, are the indispensable important component parts of infrared thermal imaging product.And zoom
Optical system can change rapidly the focal length of system within the specific limits, obtain different proportion as with visual field, thus in infrared heat
Widely applied in imaging product.
Existing infrared zoom optical system, is generally divided into two big class, and a class is continuous zooming optical system, another kind of is
Multi gear varifocal optical system.Continuous zooming optical system has two groups of motion microscope groups, and one group is zoom microscope group, and one group is compensating glass
Group, two groups of microscope groups carry out straight line associated movement along optical axis direction, by the continuous change of lens separation, realize optical system focal length
Change, keeps image planes position constant simultaneously.This zoom mode can realize the consecutive variations of optical system focal length and visual field.And
Multi gear varifocal optical system is then to have one group or two groups of motion microscope groups, microscope group or move along optical axis direction, or passes through certain machine
Structure cuts out light path, realizes system focal change.Due to the restriction of microscope group space, this zoom mode is mostly two grades
Zoom, minority can achieve third gear zoom.
Continuous zooming optical system is although have continuous vari-focus function, but has the following disadvantages：
1, the focal length of continuous zooming optical system is continually varying, and the zooming time length from short focus to focal length is it is difficult to reality
Existing fast zoom.
2, continuous zooming optical system typically completes the motion of motion microscope group using cam mechanism, when microscope group outside dimension relatively
When big, can there is a difficulty of processing difficult problem big with the resistance of motion greatly in cam parts.
And existing multi gear varifocal optical system, there is also following deficiency：
1, because the zoom microscope group of multi gear varifocal optical system is incision light path, in order to not shut out the light, zoom microscope group is no
Method setting is too many, generally one group, and minority is two groups, so can only realize two grades of zooms or third gear zoom it is difficult to realize more
Visual field.
2, multi gear varifocal optical system, visual field is more, and microscope group quantity is more, increased optics cost.
Content of the invention
This utility model is the deficiency existing with multi gear varifocal optical system for existing continuous zooming optical system, purpose
One of be provide a kind of LONG WAVE INFRARED varifocal optical system with many visual fields, the infrared energy radiant light of primary recipient target
Line, and multiple refraction process is carried out by optical system internal opticses lens on light line, focus on the target surface of Infrared Detectorss,
Finally realize infrared imaging.
This utility model solves its technical problem and be employed technical scheme comprise that：A kind of infrared Zoom optical of multi-view-field long ripple
System, including arrange from the object side to the image side along optical axis double microscope group, front fixing lens, microscope group of moving, speculum group and after
Fixing microscope group, described double microscope group and double lens and second by first and double lens form, described motion microscope group includes leading to
Cross variable focus lens package and the offset lens that guide rod and leading screw connect, described variable focus lens package is by the first zoom lens and the second change
Focus lens form, and described speculum group is made up of orthogonal first reflecting mirror and the second reflecting mirror, described rear fixation
Microscope group include being arranged between offset lens and the first reflecting mirror first after fix lens and be arranged on the second reflecting mirror light
Fix lens after the second of outgoing side, fix lens and the 4th after the 3rd after fix lens, fix lens light after the described 4th
Line outgoing side is provided with detector assembly.
A kind of described multi-view-field long ripple infrared zoom optical system, it first doubles lens, second doubles lens and front
Fixing lens are the single crystal germanium material convexoconcave lenss convex surface facing object space, and described first to double lens and front fixing lens be just
Diopter, described second to double lens be negative diopter.
A kind of described multi-view-field long ripple infrared zoom optical system, fixing lens after its first zoom lens and the 3rd is
Towards the single crystal germanium material meniscuss of object space, the first described zoom lens are negative diopter to concave surface, solid after the described 3rd
Fix-focus lens is positive diopter.
A kind of described multi-view-field long ripple infrared zoom optical system, fixing lens after its second zoom lens and the 4th is
Convex surface facing the meniscuss of object space, using selenizing Zinc material, for bearing diopter.
A kind of described multi-view-field long ripple infrared zoom optical system, its offset lens is biconvex lens, using monocrystalline germanium
Material, is positive diopter.
A kind of described multi-view-field long ripple infrared zoom optical system, it fixes lens after fixing lens and second after first
It is the single crystal germanium material meniscuss convex surface facing object space, fixing lens after described first is negative diopter, described second
Fixing lens afterwards is positive diopter.
The two of the purpose of this utility model are to provide a kind of infrared thermal imagery using above-mentioned LONG WAVE INFRARED varifocal optical system
Instrument.
This utility model solves its technical problem and be employed technical scheme comprise that：A kind of thermal infrared imager, including carriage
Frame, is provided with multi-view-field long ripple infrared zoom optical system, is additionally provided with and silk in described support frame in described support frame
Motor and the photoelectric encoder of motor connection and photoswitch that thick stick connects；Realize first and double lens and second doubling lens
That installs fixation doubles mirror microscope base；Realize the first reflecting mirror the first fixing reflecting mirror microscope base to be installed and realizes the second reflecting mirror peace
The second fixing reflecting mirror microscope base of dress；For installing the offset lens microscope base of offset lens；And it is saturating for installing the first zoom
The zoom lens microscope base of mirror and the second zoom lens.
A kind of described thermal infrared imager, it is doubled mirror microscope base and is detachably connected with support frame.
The beneficial effects of the utility model are：
1, after optical system, eight lens of group constitute single third gear imaging type varifocal optical system, group before optical system
Two panels lens independently form 1.7 × the formula of looking in the distance double system, with optical system after organize eight lens combinations, it is possible to achieve be
The entirety of six grades of focal lengths of system is amplified, and substantially increases the coverage of optical focal length.
2, using detachable height as matter doubles microscope group designing technique：Optical system double microscope group by two panels lens group
Become, using positive and negative dioptric collocation, formed 1.7 × formula system of looking in the distance, the focal length of rear group of optical system integrally can be amplified；
Double microscope base and adopt detachable design, can be removed and installed as needed, when no doubling mirror, system focal is
40mm/120mm/400mm, when doubling mirror, system focal is 70mm/210mm/700mm, and assembly is designed with positioner, can
To ensure that systematic optical axis precision is not affected by removing and installing.
3, integrated cold emission control technology：As refrigeration mode varifocal optical system, need system cold emission is carried out sternly
Lattice control, and this optical system, with respect to conventional optical system, increased again and doubles lens, the excursion of focal length from 40mm to
700mm, more increased cold emission and controls difficulty.
Brief description
The structural representation of Fig. 1 this utility model thermal infrared imager；
Fig. 2 is the optical system schematic diagram at 700mm focal length end；
Fig. 3 is the optical system schematic diagram at 70mm short focus end；
Fig. 4 is the rear group of optical system schematic diagram at 400mm focal length end；
Fig. 5 is the rear group of optical system schematic diagram at 40mm short focus end.
Each reference is：1 first doubles lens, and 2 second double lens, fix lens before 3,4 first changes
Focus lens, 5 second zoom lens, 6 guide rods, 7 leading screws, 8 offset lens, 9 photoswitches, fixing after 10 first
Lens, 11 first reflecting mirrors, 12 first reflecting mirror microscope bases, 13 second reflecting mirror microscope bases, 14 second reflecting mirrors, 15
Fix lens after second, after 16 the 3rd, fix lens, after 17 the 4th, fix lens, 18 offset lens microscope bases, 19 spies
Survey device assembly, 20 zoom lens microscope bases, 21 double mirror microscope base.
Specific embodiment
Below in conjunction with the accompanying drawings this utility model is described in further detail.
Shown in reference Fig. 1, the utility model discloses a kind of multi-view-field long ripple infrared zoom optical system, including along optical axis
Arrange from the object side to the image side doubles microscope group, front fixing lens 3, motion microscope group, speculum group and fixes microscope group afterwards, described
Double microscope group and double lens 1 and second by first and double lens 2 and form, described motion microscope group is included by guide rod 6 and leading screw 7
The variable focus lens package connecting and offset lens 8, described variable focus lens package is by the first zoom lens 4 and 5 groups of the second zoom lens
Become, offset lens 8, the first zoom lens 4 and 5 three lens of the second zoom lens can do regular straight along optical axis direction
Line moves, thus realizing the change of system focal, described speculum group is anti-by orthogonal first reflecting mirror 11 and second
Penetrate mirror 14 to form, described rear fixing microscope group include being arranged between offset lens 8 and the first reflecting mirror 11 first after fixing
Lens 10 and be arranged on the second reflecting mirror 14 beam projecting side second after fix lens the 15, the 3rd after fix lens 16 and the 4th
Fix lens 17 afterwards, fix lens 17 beam projecting side after the described 4th and be provided with detector assembly 19, two panels reflecting mirror divides
Fix between lens 15 after fixing lens 10 and second after not being positioned over first, light path is turned back twice.
This utility model multi-view-field long ripple infrared zoom optical system, its optical system relative aperture is 1：2.7, operating wave
Section is 7.7 μm～9.3 μm, optical system works in long wave infrared region, be divided into front group with rear group of two parts, this utility model the
One double lens 1, second double lens 2, front fixing lens 3, the first zoom lens 4, the second zoom lens 5, offset lens 8,
Totally ten thoroughly to fix lens 17 after fixing lens 16 and the 4th after fixing lens the 15, the 3rd after fixing lens 10, second after first
Mirror and the first reflecting mirror 11, the second reflecting mirror 14 two panels reflecting mirror；Wherein after optical system eight lens of group be one individually
Third gear imaging type varifocal optical system, can be used alone；Before optical system, the two panels lens first of group double lens 1 and the
Two double lens 2 independently form 1.7 × the formula of looking in the distance double system, with optical system after organize eight lens combinations, it is possible to achieve
The entirety of six grades of focal lengths of system is amplified.
As shown in Figures 2 to 5, group system can individually be imaged afterwards, and focal length is 40mm/120mm/400mm, is zoom ratio
3 grades of zoom system, pancreatic systems for ten times；Group system doubles lens 1 and second with first and doubles after lens 2 combine afterwards, and focal length is extended to
70mm/210mm/700mm, can achieve six grades of focal lengths and visual field altogether.
This utility model system by front group with the combining of rear group of two optical systems, it is possible to achieve six grades of focal lengths altogether,
Substantially increase the coverage of optical focal length；Front group of telescopic system microscope group is designed as repeatable dismountable structure, Ke Yigen
According to service condition assembly or disassembly, improve and use motility.
Wherein：
First doubles the single crystal germanium material convexoconcave lenss that lens 1 are convex surface facing object space, is positive diopter.
Second doubles the single crystal germanium material convexoconcave lenss that lens 2 are convex surface facing object space, for bearing diopter, due to looking in the distance is
System can increase system aberration, in order to improve image quality, double second and be provided with aspheric surface on lens 2, can fully eliminate
System aberration.
Front fixing lens 3 are the single crystal germanium material convexoconcave lenss convex surface facing object space, are positive diopter.
First zoom lens 4 are the single crystal germanium material meniscuss towards object space for the concave surface, for bearing diopter.
Fixing lens 16 after 3rd is the single crystal germanium material meniscuss towards object space for the concave surface, is positive diopter.
Second zoom lens 5 are the meniscuss convex surface facing object space, using selenizing Zinc material, for bearing diopter.
The meniscuss that lens 17 are convex surface facing object space are fixed, using selenizing Zinc material, for bearing diopter after 4th.
Offset lens 8 are biconvex lens, using single crystal germanium material, are positive diopter.
The single crystal germanium material meniscuss that lens 10 are convex surface facing object space are fixed, for bearing diopter after first.
Fix the single crystal germanium material meniscuss that lens 15 are convex surface facing object space after second, be positive diopter.
This optical system organizes the cold emission of optical system after controlling first in design, then will double lens and rear group of system
It is combined, carries out integrated design control, system cold emission is reduced to zone of reasonableness the most at last, both can achieve high-quality picture
Matter, and by the cold emission strength control of system in suitable scope, use cooperatively with high-performance long wave refrigeration detector, Ke Yishi
Existing high-resolution infrared imaging.
The invention also discloses a kind of thermal infrared imager, including support frame, be provided with described support frame as
Multi-view-field long ripple infrared zoom optical system described in claim 1, is additionally provided with described support frame and is connected with leading screw 7
The photoelectric encoder of motor and motor connection and photoswitch 9, the first zoom lens 4 are saturating with the second zoom lens 5 composition zoom
The offset lens 8 at microscope group, variable focus lens package and rear rely on leading screw 7 to drive, and move along optical axis direction, realize Jiao of optical system
Away from change, rely on photoelectric encoder to control the position that variable focus lens package is stopped with offset lens 8 simultaneously, realize accurate zoom；Also
Be provided with realize first double that lens 1 and second double that lens 2 install fixation double mirror microscope base 21, and realize and support frame
Connect, support frame is realized installing of zoom mechanism and fixed and provide the mechanical face that thermal imaging system is installed to outer support, is additionally provided with
Realize the first reflecting mirror 11 first reflecting mirror microscope base 12 of fixation to be installed and realizes the second reflecting mirror 14 the second anti-of fixation is installed
Penetrate mirror microscope base 13, and ensure that optics is turned back the precision of angle；It is additionally provided with the offset lens microscope base 18 for installing offset lens 8；
And for installing the zoom lens microscope base 20 of the first zoom lens 4 and the second zoom lens 5.
When system from focal length end to short focus end zoom when, variable focus lens package is moved along optical axis direction object space, and offset lens 8 are along light
The motion of axial image space, front group of the microscope group that doubles is designed as repeatable dismountable structure, can according to service condition assembly or disassembly,
Improve and use motility.
Above-described embodiment only illustrative principle of the present utility model and its effect, and the embodiment that part is used,
For the person of ordinary skill of the art, on the premise of creating design without departing from this utility model, if can also make
Dry deformation and improvement, these broadly fall into protection domain of the present utility model.
Claims (8)
1. a kind of multi-view-field long ripple infrared zoom optical system it is characterised in that：Including arrange from the object side to the image side along optical axis
Double microscope group, front fixing lens（3）, motion microscope group, speculum group and fix microscope group afterwards, the described microscope group that doubles is increased by first
Times lens（1）Double lens with second（2）Composition, described motion microscope group is included by guide rod（6）And leading screw（7）The change connecting
Focus lens group and offset lens（8）, described variable focus lens package is by the first zoom lens（4）With the second zoom lens（5）Composition,
Described speculum group is by orthogonal first reflecting mirror（11）With the second reflecting mirror（14）Composition, described rear fixing microscope group
Including being arranged on offset lens（8）With the first reflecting mirror（11）Between first after fix lens（10）Be arranged on the second reflection
Mirror（14）Lens are fixed after the second of beam projecting side（15）, fix lens after the 3rd（16）With the 4th after fix lens（17）,
Lens are fixed after described the 4th（17）Beam projecting side is provided with detector assembly（19）.
2. a kind of multi-view-field long ripple infrared zoom optical system according to claim 1 is it is characterised in that described first
Double lens（1）, second double lens（2）With front fixing lens（3）It is the single crystal germanium material convexoconcave lenss convex surface facing object space,
Described first doubles lens（1）With front fixing lens（3）For positive diopter, described second doubles lens（2）For bearing dioptric
Degree.
3. a kind of multi-view-field long ripple infrared zoom optical system according to claim 1 is it is characterised in that described first
Zoom lens（4）With the 3rd after fix lens（16）For concave surface towards object space single crystal germanium material meniscuss, described first
Zoom lens（4）For bearing diopter, after the described 3rd, fix lens（16）For positive diopter.
4. a kind of multi-view-field long ripple infrared zoom optical system according to claim 1 is it is characterised in that described second
Zoom lens（5）With the 4th after fix lens（17）It is the meniscuss convex surface facing object space, using selenizing Zinc material, bend for negative
Luminosity.
5. a kind of multi-view-field long ripple infrared zoom optical system according to claim 1 is it is characterised in that described compensation
Lens（8）For biconvex lens, using single crystal germanium material, it is positive diopter.
6. a kind of multi-view-field long ripple infrared zoom optical system according to claim 1 is it is characterised in that described first
Fix lens afterwards（10）With second after fix lens（15）It is the single crystal germanium material meniscuss convex surface facing object space, described
Lens are fixed after one（10）For bearing diopter, after described second, fix lens（15）For positive diopter.
7. a kind of thermal infrared imager it is characterised in that：Including support frame, in described support frame, it is provided with such as claim 1
Described multi-view-field long ripple infrared zoom optical system, is additionally provided with described support frame
With leading screw（7）The motor connecting and the photoelectric encoder of motor connection and photoswitch（9）；
Realize first and double lens（1）Double lens with second（2）That installs fixation doubles mirror microscope base（21）；
Realize the first reflecting mirror（11）The first fixing reflecting mirror microscope base is installed（12）With realize the second reflecting mirror（14）Install solid
The second fixed reflecting mirror microscope base（13）；
For installing offset lens（8）Offset lens microscope base（18）；
And for installing the first zoom lens（4）With the second zoom lens（5）Zoom lens microscope base（20）.
8. a kind of thermal infrared imager according to claim 7 is it is characterised in that described doubles mirror microscope base（21）With support
Framework is detachably connected.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620978085.5U CN206002755U (en) | 2016-08-30 | 2016-08-30 | A kind of multi-view-field long ripple infrared zoom optical system and thermal infrared imager |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620978085.5U CN206002755U (en) | 2016-08-30 | 2016-08-30 | A kind of multi-view-field long ripple infrared zoom optical system and thermal infrared imager |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106226893A (en) * | 2016-08-30 | 2016-12-14 | 湖北久之洋红外系统股份有限公司 | A kind of multi-view-field long ripple infrared zoom optical system and thermal infrared imager |
| CN110333600A (en) * | 2019-06-24 | 2019-10-15 | 哈尔滨新光光电科技股份有限公司 | A kind of big field optical imaging device and its control method based on compound eye lens group |
| CN110595623A (en) * | 2019-08-12 | 2019-12-20 | 湖北久之洋红外系统股份有限公司 | Refrigeration type thermal infrared imager |
-
2016
- 2016-08-30 CN CN201620978085.5U patent/CN206002755U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106226893A (en) * | 2016-08-30 | 2016-12-14 | 湖北久之洋红外系统股份有限公司 | A kind of multi-view-field long ripple infrared zoom optical system and thermal infrared imager |
| CN106226893B (en) * | 2016-08-30 | 2018-07-06 | 湖北久之洋红外系统股份有限公司 | A kind of multi-view-field long wave infrared zoom optical system and thermal infrared imager |
| CN110333600A (en) * | 2019-06-24 | 2019-10-15 | 哈尔滨新光光电科技股份有限公司 | A kind of big field optical imaging device and its control method based on compound eye lens group |
| CN110595623A (en) * | 2019-08-12 | 2019-12-20 | 湖北久之洋红外系统股份有限公司 | Refrigeration type thermal infrared imager |
| CN110595623B (en) * | 2019-08-12 | 2020-10-20 | 湖北久之洋红外系统股份有限公司 | Refrigeration type thermal infrared imager |
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