CN205581385U - Optical compensation formula long wave infrared continuous zoom optical system - Google Patents
Optical compensation formula long wave infrared continuous zoom optical system Download PDFInfo
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- CN205581385U CN205581385U CN201620201386.7U CN201620201386U CN205581385U CN 205581385 U CN205581385 U CN 205581385U CN 201620201386 U CN201620201386 U CN 201620201386U CN 205581385 U CN205581385 U CN 205581385U
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Abstract
The utility model relates to an optical compensation formula long wave infrared continuous zoom optical system, include the preceding fixed mirror that sets gradually from the object space to image space group, antedisplacement moving mirror group, well fixed mirror group, the moving mirror that moves backward group and back fixed mirror group, antedisplacement moving mirror group comprises first the removals lens and the second removal lens that set gradually, and the moving mirror that moves backward group moves lens by the third that sets gradually and forms with fourth removal lens, and the antedisplacement moving mirror group and the moving mirror that moves backward organize and do equidistant, uniform velocity on the optical axis, link with realization optical compensation formula moving mirror 0 in equidirectional front and back. Optical compensation formula system, simple structure makes easily, and is lower to control system's required precision. The exact fit who overcomes complicated cam structure of mechanical compensation system needs or mariages thick stick could guarantee to zoom the in -process image and keep clear shortcoming.
Description
Technical field
This utility model relates to optical compensation formula LONG WAVE INFRARED continuous zooming optical system.
Background technology
Infrared imaging system has all weather operations, without advantages such as floor lights, in alarm, scout and the military field such as guidance be widely applied.For military equipment, usual ground main target is ground blindage, factory, dam, tank, armo(u)red carrier, automobile and soldier etc..These target surface temperature are the highest, and emittance is little, and thermal-radiating peak value concentrates on long wave infrared region.In addition, during propagation in atmosphere, infrared ray is easily absorbed by material, but for mist, LONG WAVE INFRARED more easily by, so, infrared relative to medium wave (3 μm～5 μm), LONG WAVE INFRARED imaging system can carry out maximally effective detection at a lower temperature, and on the battlefield filling the air dust and smog, occupy catbird seat, more advantage in terms of detection identification.
Infrared continuous vari-focus system is to realize by changing the interval between battery of lens, by the difference of image planes compensation way, is generally divided into optical compensation and mechanical compensation two kinds.Current infrared continuous vari-focus uses mechanical compensation formula mostly, and by zoom group and the relative movement of compensation group, each motion component is made more complicated movement by the different characteristics of motion, reached to be entirely prevented from image planes and move.The such as Chinese patent application of Application No. 201210535594.7 discloses a kind of axially zoom three visual field infrared optical system, including Zoom lens group and offset lens group, realizes the conversion of three visual fields by moving axially of Zoom lens group and offset lens group.Owing to zoom group needs one_to_one corresponding with compensating when motion, the requirement to control accuracy is higher, otherwise appears in the phenomenon occurring in the handoff procedure of visual field that certain view field image is fuzzy.
Utility model content
The purpose of this utility model is to provide a kind of optical compensation formula LONG WAVE INFRARED continuous zooming optical system, in order to solve the problem that the optical system of mechanical compensation mode easily occurs that in zooming procedure some dot image is fuzzy.
For achieving the above object, scheme of the present utility model includes a kind of optical compensation formula LONG WAVE INFRARED continuous zooming optical system, including the front fixed mirror group set gradually from the object side to the image side, front moving lens group, middle fixed mirror group, rear moving lens group and rear fixed mirror group, described front moving lens group is made up of the first mobile lens set gradually and the second mobile lens, described rear moving lens group is made up of the 3rd mobile lens set gradually and the 4th mobile lens, described front moving lens group and rear moving lens group are done equidistantly on optical axis, uniform velocity, equidirectional front and back linkage is to realize continuous vari-focus；Described first mobile lens is the negative meniscus convex surface facing thing side, described second mobile lens is double-concave negative lens, described 3rd mobile lens is the negative meniscus convex surface facing thing side, and described 4th mobile lens is the concave surface negative meniscus towards thing side.
Described front fixed mirror group is become by the first fixed lens group, and described first to fix lens be the falcate plus lens convex surface facing thing side；Described middle fixed mirror group is become by the second fixed lens group, and described second to fix lens be biconvex positive lens；Described rear fixed mirror group includes four lens: the 3rd fixes lens, the 4th fix lens, the 5th fix lens and the 6th and fix lens, wherein, 3rd to fix lens be the falcate plus lens convex surface facing thing side, 4th to fix lens be the concave surface falcate plus lens towards thing side, 5th to fix lens be the concave surface falcate plus lens towards thing side, and the 6th to fix lens be the concave surface falcate plus lens towards thing side.
Described front moving lens group and rear moving lens group connect firmly setting, with realize described do on optical axis equidistant, constant speed, in the same direction before and after linkage.
The technical specification that this continuous zooming optical system realizes is: wave band is 7.7 μm～9.5 μm；Focal length is f '=33mm～500mm；Visual field is 20.62 °～1.38；F#It is 3.
Described second fix the surface of close image space of lens, the 5th fix the surface of close thing side of lens and the surface of the 6th close thing side fixing lens is aspheric surface.
Described first material fixing lens is monocrystalline germanium, the material of the first mobile lens is zinc selenide, the material of the second mobile lens is monocrystalline germanium, second material fixing lens is monocrystalline germanium, and the material of the 3rd mobile lens is monocrystalline germanium, and the material of the 4th mobile lens is zinc selenide, 3rd material fixing lens is monocrystalline germanium, 4th material fixing lens is monocrystalline germanium, and the 5th material fixing lens is monocrystalline germanium, and the 6th material fixing lens is monocrystalline germanium.
Described optical system is when short Jiao, and the varifocal mirror group of front moving lens group and rear moving lens group composition is in the position near thing side, and from short Jiao to focal length change procedure, described varifocal mirror group moves to image space direction.
It is 2～90.4mm that described first mobile lens and first fixes the interval of lens, described first mobile lens and the second mobile lens be spaced apart 6.78mm, it is 12.8～101mm that described second mobile lens and second fixes the interval between lens, it is 13～101.45mm that described 3rd mobile lens and second fixes the interval between lens, being spaced apart 4.58mm between described 3rd mobile lens and the 4th mobile lens, it is 0.5～88.9mm that described 4th mobile lens and the 3rd fixes the interval between lens.
The radius of curvature on the surface of the described first close thing side fixing lens is 153.84mm, and the radius of curvature on the first surface fixing the close image space of lens is 237.06mm；The radius of curvature on the surface of the close thing side of the first mobile lens is 145.47mm, and the radius of curvature on the surface of the close image space of the first mobile lens is 77.06mm；The radius of curvature on the surface of the close thing side of the second mobile lens is-277.97mm, and the radius of curvature on the surface of the close image space of the second mobile lens is 260.06mm；The radius of curvature on the surface of the second close thing side fixing lens is 326.11mm, and the second radius of curvature fixing the surface of the close image space of lens is-242.31mm；The radius of curvature on the surface of the close thing side of the 3rd mobile lens is 25.09mm, and the radius of curvature on the surface of the close image space of the 3rd mobile lens is 22.01mm；The radius of curvature on the surface of the close thing side of the 4th mobile lens is 785.4mm, and the radius of curvature on the surface of the close image space of the 4th mobile lens is 50.13mm；The radius of curvature on the surface of the 3rd close thing side fixing lens is 34.93mm, and the radius of curvature on the 3rd surface fixing the close image space of lens is 25.91mm；The radius of curvature on the surface of the 4th close thing side fixing lens is 28.09mm, and the radius of curvature on the 4th surface fixing the close image space of lens is 155.52mm；The radius of curvature on the surface of the 5th close thing side fixing lens is 36.05mm, and the 5th radius of curvature fixing the surface of the close image space of lens is-305.74mm；The radius of curvature on the surface of the 6th close thing side fixing lens is-166.05mm, and the radius of curvature on the 6th surface fixing the close image space of lens is 123.56mm；
Described first thickness fixing lens is 8.80mm, the thickness of the first mobile lens is 10mm, the thickness of the second mobile lens is 10mm, second thickness fixing lens is 5.7392mm, and the thickness of the 3rd mobile lens is 4.71mm, and the thickness of the 4th mobile lens is 3mm, 3rd thickness fixing lens is 3mm, 4th thickness fixing lens is 3mm, and the 5th thickness fixing lens is 5.74mm, and the 6th thickness fixing lens is 5mm.
Described 4th fixes and is provided with the first reflecting mirror and the second reflecting mirror on lens and the 5th light propagation path fixing between lens, is 180 ° by the angle between the incident ray that described first reflecting mirror and the second reflecting mirror make the 4th emergent ray and the 5th fixing lens fix lens.
In the optical compensation formula LONG WAVE INFRARED continuous zooming optical system that this utility model provides, the front and back of middle fixed mirror group is provided with moving lens group, constant gap between the two moving lens group, and on optical axis, do uniform velocity, equidirectional front and back linkage, realize continuous vari-focus by front and back linkage.Further, due to two moving lens groups equidistantly, uniform velocity, equidirectional movement, so, the requirement to control accuracy is relatively low, does not haves the phenomenon that some dot image is fuzzy in zooming procedure, it is ensured that imaging clear and stable.Further, this optical system focal length is long, and zoom ratio is big, it is possible to be applicable to the long-range target acquisition of aviation airborne equipment, identification.
Accompanying drawing explanation
Fig. 1 is optical compensation formula LONG WAVE INFRARED continuous zooming optical system structural representation；
Fig. 2 is the location drawing of optical system varifocal mirror group under short Jiao；
Fig. 3 is the location drawing of optical system varifocal mirror group under middle Jiao；
Fig. 4 is the location drawing of optical system varifocal mirror group under focal length；
Fig. 5 is the motor process schematic diagram of varifocal mirror group；
Fig. 6 is short focus optical system curvature of field distortion figure；
Fig. 7 is middle focus optical system curvature of field distortion figure；
Fig. 8 is long focus optical system curvature of field distortion figure；
Fig. 9 is short focus optical system point range figure；
Figure 10 is middle focus optical system point range figure；
Figure 11 is long focus optical system point range figure.
Detailed description of the invention
The utility model is described in more detail below in conjunction with the accompanying drawings.
The optical compensation formula LONG WAVE INFRARED continuous zooming optical system that this utility model provides includes the front fixed mirror group set gradually from the object side to the image side, front moving lens group, middle fixed mirror group, rear moving lens group and rear fixed mirror group.The position of front fixed mirror group, middle fixed mirror group and rear fixed mirror group is constant, and the spacing between front moving lens group and rear moving lens group also keeps constant.In zooming procedure, front moving lens group and rear moving lens group are done equidistantly on optical axis, uniform velocity, equidirectional front and back linkage.
Front moving lens group and rear moving lens group are formed by two lens, and wherein, front moving lens group is made up of the first mobile lens set gradually and the second mobile lens, and rear moving lens group is made up of the 3rd mobile lens set gradually and the 4th mobile lens.
As shown in Figure 1, this optical compensation formula LONG WAVE INFRARED continuous zooming optical system includes being followed successively by along light direction from thing side: front fixing group of A, mobile group B, fixing group C, mobile group D, rear fixing group E, rear fixing group G and detector H, wherein, rear fixing group E and rear fixing group of G collectively forms rear fixed mirror group.
The designing technique index of this continuous zooming optical system is: wave band is 7.7 μm～9.5 μm；Focal length is f '=33mm～500mm；Visual field is 20.62 °～1.38；F#It is 3；Adaptive pixel number is 320 × 256；Pixel dimension is the long wave refrigeration detector of 30 μm.
Mobile group B and mobile group D constitutes varifocal mirror group, and mobile group B and mobile group D connects firmly setting, i.e. in this optical system, mobile group B and mobile group D uses the mode of linkage, common electric machine can be used as driving source, and this motor is arranged on lens barrel, drives varifocal mirror group to move at system optical axis direction tandem by gear-guide rail mechanism, make the two move group to move forward and backward together on optical axis, to realize mobile group B and mobile group D and do on optical axis equidistantly, constant speed, in the same direction before and after linkage.
Mobile group B is made up of the mobile group of object lens B-1 set gradually and mobile group object lens B-2, and mobile group D is made up of the mobile group of object lens D-1 set gradually and mobile group object lens D-2.Wherein, mobile group object lens B-1 is the negative meniscus convex surface facing thing side, and mobile group object lens B-2 is double-concave negative lens, and mobile group object lens D-1 is the negative meniscus convex surface facing thing side, and mobile group object lens D-2 is the concave surface negative meniscus towards thing side.
Front fixing group A is become by a fixed lens group, and fixing group object lens A, front fixing group of object lens A before being referred to as is the falcate plus lens convex surface facing thing side；In fixing group C is become by a fixed lens group, fixing group object lens C in being referred to as, in the fixing object lens C that organizes be biconvex positive lens；Rear fixing organizes rear fixing group of object lens E-1 and the rear fixing group of object lens E-2 that E includes setting gradually, and wherein, rear fixing group object lens E-1 is the falcate plus lens convex surface facing thing side, and fixing group object lens E-2 afterwards is the concave surface falcate plus lens towards thing side；Rear fixing organizes rear fixing group of object lens G-1 and the rear fixing group of object lens G-2 that G includes setting gradually, and wherein, rear fixing group object lens G-1 is the concave surface falcate plus lens towards thing side, and fixing group object lens G-2 afterwards is the concave surface falcate plus lens towards thing side.
Owing to the light come from the transmission of thing side is when through lens, initially passes through the front surface of lens, be then passed through the rear surface of lens, so, for these lens, front surface is the surface near thing side, and rear surface is the surface near image space.So, in this embodiment, in the rear surface (near the surface of image space) of fixing group object lens C, the front surface (surface of close thing side) of the front surface (near the surface of thing side) of rear fixing group object lens G-1 and rear fixing group of object lens G-2 be aspheric surface.
These three aspheric surface uses the Asphere face type in CODE V software, and equation is:
Wherein, c is curvature, and r is the axial radial coordinate of vertical light, and k is conic constant, A be quadravalence asphericity coefficient, B six rank asphericity coefficient, C be eight rank asphericity coefficients, D be ten rank asphericity coefficients.
And,
In the rear surface asphericity coefficient of lens C of fixing group be:
K=7.69；
A=1.4914E-7；
B=4.6826E-12；
C=1.6105E-15；
The front surface asphericity coefficient of the lens G-1 of rear fixing group is:
K=-1.1144；
A=1.5236E-6；
B=-3.7171E-9；
C=-3.5521E-11；
The front surface asphericity coefficient of the lens G-2 of rear fixing group is:
K=5；
A=1.6414E-7；
B=1.2337E-8；
C=1.299E-11.
Table 1 gives one group of concrete optical coefficient of this optical system, and unit is mm.
Table 1
Mobile group B and mobile group D can move along optical axis tandem, so, in both movings range, as shown in Figures 2 to 4, this optical system is when short Jiao, and mobile group B and the mobile D that organizes is in the position near thing side, from short Jiao to focal length change procedure, mobile group B and mobile group D is gradually distance from the motion of thing side, i.e. moves to image space direction.As it is shown in figure 5, for mobile group B and the moving process schematic diagram of mobile group D, from the point of view of the orientation in scheming, when optical system is changed to focal length by short Jiao, mobile group B with D connect firmly together with do to the right uniform velocity and linearly move the change realizing system focal.And, in this embodiment, owing to moving before and after mobile group B and D, then, have certain interval between front fixing group of object lens A and mobile group object lens B-1, its interval is 2～90.4mm；And mobile group object lens B-1 and the mobile alternate constant organized between object lens B-2, for 6.78mm；Mobile group object lens B-2 and in have certain interval between fixing group object lens C, its interval is 12.8～101mm；Mobile group object lens D-1 and in interval between fixing group object lens C be 13～101.45mm；And mobile group object lens D-1 and the mobile alternate constant organized between object lens D-2, for 4.58mm；Interval between mobile group object lens D-2 and rear fixing group object lens E-1 has certain interval, and its interval is 0.5～88.9mm.By control and regulation mobile group B and the position of mobile group D, it is achieved the regulation of focal length.
This optical system uses the mode of secondary imaging so that the diaphragm of optical system is completely superposed with the cold stop of detector, it is achieved that cold stop efficiency 100%.Avoid light to be cut thus the logical light quantity of minimizing so that the sensitivity decrease of system；, thermal-radiating veiling glare is suppressed meanwhile, improve the signal to noise ratio of system.
Additionally, in order to shorten the length of optical system, propagation light path between rear fixing group of object lens E-2 and rear fixing group object lens G-1 is provided with two reflecting mirrors, reflecting mirror F-1 and reflecting mirror F-2, wherein, reflecting mirror F-1 and optical axis placement at 45 °, reflecting mirror F-2 also placement at 45 ° with optical axis, the angle can fixed after making between the emergent ray of group object lens E-2 and the incident ray of rear fixing group object lens G-1 by the two reflecting mirror is 180 °, and i.e. two light is in opposite direction.Introducing two folding mirrors, light path carries out twice turnover, form " U " type structure, shorten system length, having adapted to airborne opto-electronic device can not too long of requirement to infrared optical system structure.
So, in the present embodiment, as it is shown in figure 1, plus lens A, minus lens B-1, minus lens B-2, plus lens C, minus lens D-1, minus lens D-2, plus lens E-1, plus lens E-2 coaxial placement, its light and plus lens G-1 and the light ray parallel of plus lens G-2.Light arrives folding mirror F-1 from plus lens A, minus lens B-1, minus lens B-2, plus lens C, minus lens D-1, minus lens D-2, plus lens E-1, plus lens E-2, after reflecting mirror F-1 reflects, arrive reflecting mirror F-2, after the light of reflecting mirror F-2 reflection is assembled by plus lens G-1, plus lens G-2, be imaged on detector H.
As shown in figs 6-8, the respectively optical system curvature of field distortion when short Jiao, middle Jiao, focal length is schemed, it is known that distortion is respectively less than 1% in big small field of view, shows that system imaging is excellent, meets design requirement.
As shown in figs. 9-11, being the optical system point range figure when short Jiao, middle Jiao, focal length respectively, as seen from the figure, the some spot diameter when different focal is respectively less than pixel dimension, shows that system imaging is excellent, meets design requirement.
It is presented above specific embodiment, but this utility model is not limited to described embodiment.Basic ideas of the present utility model are above-mentioned basic scheme, for those of ordinary skill in the art, according to teaching of the present utility model, design the model of various deformation, formula, parameter are not required to spend creative work.The change that in the case of without departing from principle of the present utility model and spirit, embodiment carried out, revise, replace and modification still falls within protection domain of the present utility model.
Claims (10)
1. an optical compensation formula LONG WAVE INFRARED continuous zooming optical system, it is characterized in that, including the front fixed mirror group set gradually from the object side to the image side, front moving lens group, middle fixed mirror group, rear moving lens group and rear fixed mirror group, described front moving lens group is made up of the first mobile lens set gradually and the second mobile lens, described rear moving lens group is made up of the 3rd mobile lens set gradually and the 4th mobile lens, and described front moving lens group and rear moving lens group are done equidistantly on optical axis, uniform velocity, equidirectional front and back linkage to be to realize continuous vari-focus；Described first mobile lens is the negative meniscus convex surface facing thing side, described second mobile lens is double-concave negative lens, described 3rd mobile lens is the negative meniscus convex surface facing thing side, and described 4th mobile lens is the concave surface negative meniscus towards thing side.
Optical compensation formula LONG WAVE INFRARED continuous zooming optical system the most according to claim 1, it is characterised in that described front fixed mirror group is become by the first fixed lens group, described first to fix lens be the falcate plus lens convex surface facing thing side；Described middle fixed mirror group is become by the second fixed lens group, and described second to fix lens be biconvex positive lens；Described rear fixed mirror group includes four lens: the 3rd fixes lens, the 4th fix lens, the 5th fix lens and the 6th and fix lens, wherein, 3rd to fix lens be the falcate plus lens convex surface facing thing side, 4th to fix lens be the concave surface falcate plus lens towards thing side, 5th to fix lens be the concave surface falcate plus lens towards thing side, and the 6th to fix lens be the concave surface falcate plus lens towards thing side.
Optical compensation formula LONG WAVE INFRARED continuous zooming optical system the most according to claim 1, it is characterised in that described front moving lens group and rear moving lens group connect firmly setting, with realize described do on optical axis equidistant, constant speed, in the same direction before and after linkage.
Optical compensation formula LONG WAVE INFRARED continuous zooming optical system the most according to claim 2, it is characterised in that the technical specification that this continuous zooming optical system realizes is: wave band is 7.7 μm～9.5 μm；Focal length is f '=33mm～500mm；Visual field is 20.62 °～1.38；F#It is 3.
Optical compensation formula LONG WAVE INFRARED continuous zooming optical system the most according to claim 2, it is characterized in that, described second fix the surface of close image space of lens, the 5th fix the surface of close thing side of lens and the surface of the 6th close thing side fixing lens is aspheric surface.
Optical compensation formula LONG WAVE INFRARED continuous zooming optical system the most according to claim 2, it is characterized in that, described first material fixing lens is monocrystalline germanium, the material of the first mobile lens is zinc selenide, the material of the second mobile lens is monocrystalline germanium, second material fixing lens is monocrystalline germanium, the material of the 3rd mobile lens is monocrystalline germanium, the material of the 4th mobile lens is zinc selenide, 3rd material fixing lens is monocrystalline germanium, 4th material fixing lens is monocrystalline germanium, 5th material fixing lens is monocrystalline germanium, 6th material fixing lens is monocrystalline germanium.
Optical compensation formula LONG WAVE INFRARED continuous zooming optical system the most according to claim 2, it is characterized in that, described optical system is when short Jiao, the varifocal mirror group of front moving lens group and rear moving lens group composition is in the position near thing side, from short Jiao to focal length change procedure, described varifocal mirror group moves to image space direction.
Optical compensation formula LONG WAVE INFRARED continuous zooming optical system the most according to claim 7, it is characterized in that, it is 2～90.4mm that described first mobile lens and first fixes the interval of lens, described first mobile lens and the second mobile lens be spaced apart 6.78mm, it is 12.8～101mm that described second mobile lens and second fixes the interval between lens, it is 13～101.45mm that described 3rd mobile lens and second fixes the interval between lens, it is spaced apart 4.58mm between described 3rd mobile lens and the 4th mobile lens, it is 0.5～88.9mm that described 4th mobile lens and the 3rd fixes the interval between lens.
Optical compensation formula LONG WAVE INFRARED continuous zooming optical system the most according to claim 8, it is characterized in that, the radius of curvature on the surface of the described first close thing side fixing lens is 153.84mm, and the radius of curvature on the first surface fixing the close image space of lens is 237.06mm；The radius of curvature on the surface of the close thing side of the first mobile lens is 145.47mm, and the radius of curvature on the surface of the close image space of the first mobile lens is 77.06mm；The radius of curvature on the surface of the close thing side of the second mobile lens is-277.97mm, and the radius of curvature on the surface of the close image space of the second mobile lens is 260.06mm；The radius of curvature on the surface of the second close thing side fixing lens is 326.11mm, and the second radius of curvature fixing the surface of the close image space of lens is-242.31mm；The radius of curvature on the surface of the close thing side of the 3rd mobile lens is 25.09mm, and the radius of curvature on the surface of the close image space of the 3rd mobile lens is 22.01mm；The radius of curvature on the surface of the close thing side of the 4th mobile lens is 785.4mm, and the radius of curvature on the surface of the close image space of the 4th mobile lens is 50.13mm；The radius of curvature on the surface of the 3rd close thing side fixing lens is 34.93mm, and the radius of curvature on the 3rd surface fixing the close image space of lens is 25.91mm；The radius of curvature on the surface of the 4th close thing side fixing lens is 28.09mm, and the radius of curvature on the 4th surface fixing the close image space of lens is 155.52mm；The radius of curvature on the surface of the 5th close thing side fixing lens is 36.05mm, and the 5th radius of curvature fixing the surface of the close image space of lens is-305.74mm；The radius of curvature on the surface of the 6th close thing side fixing lens is-166.05mm, and the radius of curvature on the 6th surface fixing the close image space of lens is 123.56mm；
Described first thickness fixing lens is 8.80mm, the thickness of the first mobile lens is 10mm, the thickness of the second mobile lens is 10mm, second thickness fixing lens is 5.7392mm, and the thickness of the 3rd mobile lens is 4.71mm, and the thickness of the 4th mobile lens is 3mm, 3rd thickness fixing lens is 3mm, 4th thickness fixing lens is 3mm, and the 5th thickness fixing lens is 5.74mm, and the 6th thickness fixing lens is 5mm.
Optical compensation formula LONG WAVE INFRARED continuous zooming optical system the most according to claim 4, it is characterized in that, described 4th fixes and is provided with the first reflecting mirror and the second reflecting mirror on lens and the 5th light propagation path fixing between lens, is 180 ° by the angle between the incident ray that described first reflecting mirror and the second reflecting mirror make the 4th emergent ray and the 5th fixing lens fix lens.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105676432A (en) * | 2016-03-16 | 2016-06-15 | 凯迈（洛阳）测控有限公司 | Optical compensation type long-wave infrared continuous zooming optical system |
| CN107360412A (en) * | 2017-08-21 | 2017-11-17 | 广州视源电子科技股份有限公司 | 3D rendering creation method, capture apparatus and readable storage medium storing program for executing |
| WO2018065508A1 (en) * | 2016-10-06 | 2018-04-12 | Thales | Ir imaging system with continuous gc-pc zoom provided with a tpc configuration |
-
2016
- 2016-03-16 CN CN201620201386.7U patent/CN205581385U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105676432A (en) * | 2016-03-16 | 2016-06-15 | 凯迈（洛阳）测控有限公司 | Optical compensation type long-wave infrared continuous zooming optical system |
| CN105676432B (en) * | 2016-03-16 | 2018-01-26 | 凯迈（洛阳）测控有限公司 | A kind of optical compensation formula LONG WAVE INFRARED continuous zooming optical system |
| WO2018065508A1 (en) * | 2016-10-06 | 2018-04-12 | Thales | Ir imaging system with continuous gc-pc zoom provided with a tpc configuration |
| FR3057427A1 (en) * | 2016-10-06 | 2018-04-13 | Thales Sa | GC-PC CONTINUOUS ZOOM IR IMAGING SYSTEM WITH TPC CONFIGURATION |
| US10620412B2 (en) | 2016-10-06 | 2020-04-14 | Thales | IR imaging system with continuous GC-PC zoom provided with a TPC configuration |
| CN107360412A (en) * | 2017-08-21 | 2017-11-17 | 广州视源电子科技股份有限公司 | 3D rendering creation method, capture apparatus and readable storage medium storing program for executing |
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