CN109116530A - A kind of short-wave infrared optics is without thermalization continuous magnification lens - Google Patents
A kind of short-wave infrared optics is without thermalization continuous magnification lens Download PDFInfo
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- CN109116530A CN109116530A CN201810943194.7A CN201810943194A CN109116530A CN 109116530 A CN109116530 A CN 109116530A CN 201810943194 A CN201810943194 A CN 201810943194A CN 109116530 A CN109116530 A CN 109116530A
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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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Abstract
The present invention relates to a kind of short-wave infrared optics without thermalization continuous magnification lens, the optical system of the camera lens includes the rear fixed group E that the compensation group C that is positive of the zoom group B that is negative of the preceding fixed group A that is positive of focal power, focal power, focal power, diaphragm D, focal power are positive, and fixed group A includes the first gluing unit of positive meniscus lens A-1, diverging meniscus lens A-2 and positive meniscus lens A-3 contiguity before described；The zoom group B includes the second gluing unit of biconcave lens B-1, positive meniscus lens B-2 and biconcave lens B-3 contiguity；The compensation group C includes the third gluing unit of biconvex lens C-1, diverging meniscus lens C-2 and positive meniscus lens C-3 contiguity；Fixed group E includes positive meniscus lens E-1, diverging meniscus lens E-2 and biconvex lens E-3 after described.Camera lens of the present invention realizes steepest zoom, so that lead is small, the total length of optics, system bulk is small and exquisite, has wider operating temperature range, does not need often to repeat to focus.
Description
Technical field
The present invention relates to a kind of short-wave infrared optics without thermalization continuous vari-focus mirror.
Background technique
Short-wave infrared has more excellent mist transmitting performance, can greatly promote fire hazard aerosol fog environment compared to visible light
Under visibility；It is sensitive to high temp objects, ignition point can be more precisely determined than LONG WAVE INFRARED；Short-wave infrared to moisture-sensitive,
It can be used for heavy rain early warning, detection, cyclone observation etc..Under the conditions of bad weather low visibility, imaging is similar to visible light
Image has better details resolution and analytic ability than thermal imaging.Reflectance spectrum and camouflage of the near infrared band to green plants
The difference of coating is very big, the safety that near infrared imaging system is pretended in conventional camouflage without in all senses, can be used as discovery
Defend new tool.Therefore, the research and development of short-wave infrared camera lens are very necessary.But the current short-wave infrared camera lens development and application time also compares
Shorter, the not high disadvantage of generally existing resolution ratio, can only largely meet the short-wave infrared detector that Pixel size is 15um makes
With demand, and essentially tight shot, it is difficult to while meeting the needs of panorama search is magnified with zonule, therefore the company of exploitation
The short-wave infrared camera lens of continuous zoom is highly desirable.Meanwhile to make camera lens adapt to different temperatures environment, do not need often to repeat
It focuses, simplifies structure, it is necessary to realize optical passive mode without thermalization.
Summary of the invention
In view of this, short-wave infrared optics small in size connects without thermalization the object of the present invention is to provide a kind of compact-sized
Continuous varifocal mirror, has wider operating temperature range.
The present invention is realized using following scheme: a kind of short-wave infrared optics states the light of camera lens without thermalization continuous magnification lens
System includes that A is organized in the preceding fixation being positive along the light focal power that incident direction is set gradually from front to back, focal power is negative
The rear fixed group E that compensation group C that zoom group B, focal power are positive, diaphragm D, focal power are positive, fixed group A includes just curved before described
The first gluing unit of moon lens A-1, diverging meniscus lens A-2 and positive meniscus lens A-3 contiguity；The zoom group B includes that concave-concave is saturating
The second gluing unit of mirror B-1, positive meniscus lens B-2 and biconcave lens B-3 contiguity；The compensation group C include biconvex lens C-1,
The third gluing unit of diverging meniscus lens C-2 and positive meniscus lens C-3 contiguity；After described a fixed group E include positive meniscus lens E-1,
Diverging meniscus lens E-2 and biconvex lens E-3.
Further, the airspace between the preceding fixed group A and zoom group B is 4.16~22.87mm, the zoom
Airspace between group B and compensation group C is 2.78~34.16mm, between the air between the compensation group C and rear fixed group E
It is divided into 2.03~32mm, the positive meniscus lens A-3 uses the N-PK52A material of ultra-low dispersion.
Further, the airspace between the positive meniscus lens A-1 and the first gluing unit is 0.74mm, the concave-concave
Airspace between lens B-1 and the second gluing unit is 1.21mm, the sky between the biconvex lens C-1 and third gluing unit
0.1mm is divided between gas, the airspace between the positive meniscus lens E-1 and diverging meniscus lens E-2 be 0.66mm, it is described bear it is curved
Airspace between moon lens E-2 and biconvex lens E-3 is 14.78mm.
Further, the radius of curvature R 1 of mirror surface meets relational expression before the positive meniscus lens A-1: 42.3mm≤R1≤
The radius of curvature R 2 of 44.987mm, rear mirror surface meet relational expression: 198mm≤R2≤203.471mm, with a thickness of 5.18mm；First
The radius of curvature R 3 of mirror surface meets relational expression before gluing unit: 113.01mm≤R3≤115.214mm, the radius of curvature R 4 of cemented surface
Meet relational expression: the radius of curvature R 5 of 23.8mm≤R4≤24.021mm, rear mirror surface meet relational expression: 485mm≤R5≤
512.2mm, diverging meniscus lens A-2 are with a thickness of 1.95mm, and positive meniscus lens A-3 is with a thickness of 8.83mm；Mirror surface before biconcave lens B-1
Radius of curvature R 6 meet relational expression: -79.45mm≤R6≤- 77.232mm, the radius of curvature R 7 of rear mirror surface meets relational expression
69.1mm≤R7≤70.232mm, with a thickness of 1.1mm；The radius of curvature R 8 of mirror surface meets relational expression before second gluing unit :-
73.213mm≤R8≤- 71.25mm, the radius of curvature R 9 of cemented surface meet relational expression: -16.85mm≤R9≤- 16.452mm,
The radius of curvature R 10 of mirror surface meets relational expression afterwards: 82mm≤R≤84.813mm, positive meniscus lens B-2 are double with a thickness of 3.59mm
Concavees lens B-3 is with a thickness of 1.1mm；The radius of curvature R 11 of mirror surface meets relational expression before biconvex lens C-1: 47.5mm≤R11≤
48.312mm, the radius of curvature R 12 of rear mirror surface meets relational expression: -135.2mm≤R12≤- 132.2mm, with a thickness of 2.08mm；
The radius of curvature R 13 of mirror surface meets relational expression before third gluing unit: 52mm≤R≤60.23mm, the radius of curvature R 14 of cemented surface
Meet relational expression: the radius of curvature R 15 of 10.89mm≤R14≤11.05mm, rear mirror surface meet relational expression: 420mm≤R15≤
99999999mm, diverging meniscus lens C-2 are with a thickness of 0.95mm, and positive meniscus lens C-3 is with a thickness of 3.89mm；Positive meniscus lens E-1
The radius of curvature R 16 of preceding mirror surface meets relational expression: 10.5mm≤R16≤13.989mm, and the radius of curvature R 17 of rear mirror surface, which meets, closes
It is formula: 20.45mm≤R17≤27.89mm, with a thickness of 1.88mm；The radius of curvature R 18 of mirror surface meets before diverging meniscus lens E-2
Relational expression: the radius of curvature R 19 of 30.1mm≤R18≤36.79mm, rear mirror surface meet relational expression: 8.2mm≤R19≤9.35mm,
With a thickness of 2.66mm；The radius of curvature R 20 of mirror surface meets relational expression before biconvex lens E-3: 27mm≤RR20≤28.3mm, rear mirror
The radius of curvature R 21 in face meets relational expression: -240.1mm≤R20≤- 210.01mm, with a thickness of 2.07mm.
Further, the mechanical structure of the camera lens includes the zoom compensation zoom machine for being equipped with zoom group B and compensation group C
Structure, the zoom compensation zoom mechanism includes body tube, and the Inner Front End of the body tube is equipped with the zoom group for being equipped with zoom group B
Part, the interior rear end of the body tube are equipped with the compensation component for being equipped with compensation group C, and body tube front end is equipped with preceding fixation kit, preceding
Fixation kit includes the preceding group lens barrel of fixed group A before being equipped with, and primary mirror tube rear end is equipped with rear fixation kit, and rear fixation kit includes
The rear group lens barrel of fixed group D after being equipped with.
Further, the front end of preceding group lens barrel be bolted with compress biconvex lens A-1 pressing ring, the biconvex lens A-1 with
AB spacer ring is equipped between first gluing unit；The zoom component includes the zoom microscope base for being equipped with zoom group B, the installation of zoom component
In on zoom Mobile base, the compensation component includes the compensation microscope base for being equipped with compensation group C, and the compensation component is installed on compensation
On Mobile base, the zoom component is connected by screw thread with zoom Mobile base, and the compensation component is moved by screw thread and compensation
Dynamic seat is connected, and zoom cam is arranged in the body tube, motor gear is provided with outside body tube and nibbles with zoom cam
Close the zoom motor of transmission.
Compared with prior art, the invention has the following advantages: (1) is using positive group collocation structure, so that preceding group of light
Focal power is smaller, reduces second order spectrum aberration, and use ultra-low dispersion material, greatly improves the level of resolution of focal length section, can
To meet the short-wave infrared camera use demand of 7um pixel dimension；(2) continuous vari-focus, at the same meet the search of big region panorama with
The demand of zonule amplifying observation；(3) it realizes optical passive mode and is not needed under wide temperature dynamic range without thermalized design
Temperature focusing, so that structure is simple, and lowers hazard rate.
To make the objectives, technical solutions, and advantages of the present invention more comprehensible, specific embodiment and phase will be passed through below
Attached drawing is closed, invention is further described in detail.
Detailed description of the invention
Fig. 1 is the schematic diagram of optical system of the inventive embodiments；
Fig. 2 is structure general assembly drawing in the inventive embodiments；
Fig. 3 is the schematic diagram of preceding fixation kit in the inventive embodiments；
Fig. 4 is that zoom compensates variable focus package end view in the inventive embodiments；
Fig. 5 is that zoom compensates variable focus package sectional view in the inventive embodiments；
Fig. 6 is the schematic diagram of rear fixation kit in the inventive embodiments；
MTF figure when Fig. 7 is the inventive embodiments focal length；
MTF figure when Fig. 8 is the inventive embodiments focal length at a temperature of -40 DEG C；
Figure label explanation:
Fixation kit before 41-；42- zoom component；43- cam pack；44- compensation component；Fixation kit after 45-；46- detection
Device assembly；
51- meniscus lens A-1；52- pressing ring；53- spacer ring；The first gluing unit of 54-；55- preceding group lens barrel；
61- zoom group B；62- cam cover；63- zoom Mobile base；64- body tube；65- guide rod；66- zoom cam；67- is mended
Repay Mobile base；68- compensation group C；69- microswitch frame；710- microswitch；611- zoom potentiometer；612- zoom potentiometer
Frame；613- potentiometer gear；614- limited block；615- zoom motor rack；616- motor gear；617- zoom motor；618- is micro-
Dynamic switch；619- microswitch frame；
Gasket is organized after 71-；72- rear group lens barrel；73- rear bearing block；74- rear axle bearing ring；75- rear axle bearing ring；76- detector
Adjust gasket；Pressing ring is organized after 77-；78- biconvex lens E-3；79- rolling bearing；Spacer ring is organized after 710-；711- diverging meniscus lens E-
2；Spacer ring is organized after 712-；713- positive meniscus lens E-1.
Specific embodiment
As shown in Fig. 1 ~ 8, without thermalization continuous magnification lens, the optical system for stating camera lens includes edge for a kind of short-wave infrared optics
A, the zoom group B that focal power is negative, light focus are organized in the preceding fixation that the light focal power that incident direction is set gradually from front to back is positive
The rear fixation group E that the compensation group C, diaphragm D, focal power being positive are positive is spent, fixed group A includes positive meniscus lens A-1, bears before described
First gluing unit of meniscus lens A-2 and positive meniscus lens A-3 contiguity；The zoom group B includes biconcave lens B-1, positive bent moon
Second gluing unit of lens B-2 and biconcave lens B-3 contiguity；The compensation group C includes biconvex lens C-1, diverging meniscus lens C-2
With the third gluing unit of positive meniscus lens C-3 contiguity；Fixed group E includes positive meniscus lens E-1, diverging meniscus lens E-2 after described
With biconvex lens E-3.
In the present embodiment, the airspace between the preceding fixed group A and zoom group B is 4.16~22.87mm, described
Airspace between zoom group B and compensation group C is 2.78~34.16mm, the sky between the compensation group C and rear fixed group E
2.03~32mm is divided between gas, the positive meniscus lens A-3 uses the N-PK52A material of ultra-low dispersion.
In the present embodiment, the airspace between the positive meniscus lens A-1 and the first gluing unit is 0.74mm, described
Airspace between biconcave lens B-1 and the second gluing unit is 1.21mm, between the biconvex lens C-1 and third gluing unit
Airspace be 0.1mm, airspace between the positive meniscus lens E-1 and diverging meniscus lens E-2 is 0.66mm, described
Airspace between diverging meniscus lens E-2 and biconvex lens E-3 is 14.78mm.
In the present embodiment, the radius of curvature R 1 of mirror surface meets relational expression before the positive meniscus lens A-1: 42.3mm≤R1
The radius of curvature R 2 of≤44.987mm, rear mirror surface meet relational expression: 198mm≤R2≤203.471mm, with a thickness of 5.18mm, material
Material is N-LASF31A；The radius of curvature R 3 of mirror surface meets relational expression before first gluing unit: 113.01mm≤R3≤115.214mm,
The radius of curvature R 4 of cemented surface meets relational expression: the radius of curvature R 5 of 23.8mm≤R4≤24.021mm, rear mirror surface meet relationship
Formula: 485mm≤R5≤512.2mm, diverging meniscus lens A-2 are with a thickness of 1.95mm, material LAFN7, positive meniscus lens A-3 thickness
For 8.83mm, material N-PK52A；The radius of curvature R 6 of mirror surface meets relational expression: -79.45mm≤R6 before biconcave lens B-1
The radius of curvature R 7 of≤- 77.232mm, rear mirror surface meet relational expression 69.1mm≤R7≤70.232mm, with a thickness of 1.1mm, material
For N-LAF21；The radius of curvature R 8 of mirror surface meets relational expression: -73.213mm≤R8≤- 71.25mm before second gluing unit, glued
The radius of curvature R 9 in face meets relational expression: -16.85mm≤R9≤- 16.452mm, and the radius of curvature R 10 of rear mirror surface meets relationship
Formula: 82mm≤R≤84.813mm, positive meniscus lens B-2 are with a thickness of 3.59mm, material H-ZF75A, biconcave lens B-3 thickness
For 1.1mm, material N-LASF31A；The radius of curvature R 11 of mirror surface meets relational expression before biconvex lens C-1: 47.5mm≤R11
≤ 48.312mm, the radius of curvature R 12 of rear mirror surface meet relational expression: -135.2mm≤R12≤- 132.2mm, with a thickness of
2.08mm, material N-LASF31A；The radius of curvature R 13 of mirror surface meets relational expression before third gluing unit: 52mm≤R≤
The radius of curvature R 14 of 60.23mm, cemented surface meet relational expression: 10.89mm≤R14≤11.05mm, the radius of curvature of rear mirror surface
R15 meets relational expression: 420mm≤R15≤99999999mm, diverging meniscus lens C-2 with a thickness of 0.95mm, material H-ZF75A,
Positive meniscus lens C-3 is with a thickness of 3.89mm, material N-LASF31A；The radius of curvature R 16 of mirror surface is full before positive meniscus lens E-1
Sufficient relational expression: the radius of curvature R 17 of 10.5mm≤R16≤13.989mm, rear mirror surface meet relational expression: 20.45mm≤R17≤
27.89mm, with a thickness of 1.88mm, material N-SF57；The radius of curvature R 18 of mirror surface meets relational expression before diverging meniscus lens E-2:
The radius of curvature R 19 of 30.1mm≤R18≤36.79mm, rear mirror surface meet relational expression: 8.2mm≤R19≤9.35mm, with a thickness of
2.66mm, material N-LASF46A；The radius of curvature R 20 of mirror surface meets relational expression before biconvex lens E-3: 27mm≤RR20≤
28.3mm, the radius of curvature R 21 of rear mirror surface meets relational expression: -240.1mm≤R20≤- 210.01mm, with a thickness of 2.07mm, material
Material is H-FK61, and the airspace between biconvex lens E-3 and imaging target surface is 14.87 ± 0.25mm.
Following optical index has been reached by the optical system that above-mentioned lens set is constituted:
1, service band: 900nm~1700nm；
2, focal length: 28mm~90.5mm；
3, field angle: 7.69 °~25.69 °；
4, relative aperture: D/f ' is greater than 1/4；
5, optical transfer function: when transmission function spatial frequency 70p/mm, center MTF >=0.4 when focal length, short focus is regarded in maximum
Field still has a good image quality, peripheral field MTF >=0.24, can with the 2/3 of 7um pixel dimension " target surface short-wave infrared is taken the photograph
Camera adaptation.
6, optics overall length is less than 109.5mm；
7, zoom whole process zooming time is 5S；
8, operating temperature: -40 DEG C~60 DEG C, realize that optical passive mode without thermalized design, is focused without temperature.
To realize system compact, needing to shorten the overall length of optical system as far as possible and reducing radial dimension, the zoom of system
Group and compensation group moving range are as small as possible, thus use steepest zoom cam curve design, when zoom group multiplying power m2=-
When 1, the multiplying power of compensation group is m31=m32=- 1, seamlessly transits in the focal length point position, realizes steepest zoom so that lead it is small,
The total length of optics, system bulk are small and exquisite.
Short-wave infrared optics of the present invention is without thermalization continuous magnification lens: (1) using positive group collocation structure, so that preceding group of light focus
It spends smaller, reduces second order spectrum aberration, and use ultra-low dispersion material, greatly improve the level of resolution of focal length section, it can be with
Meet the short-wave infrared camera use demand of 7um pixel dimension.(2) continuous vari-focus, at the same meet the search of big region panorama with it is small
The demand of region amplifying observation.(3) it realizes optical passive mode and does not need temperature under wide temperature dynamic range without thermalized design
Degree focusing, so that structure is simple, and lowers hazard rate.
This camera lens is using four Component Structures of positive group compensation, and when zoom group is moved forward and backward, compensation group is mobile to guarantee simultaneously
Image planes are constant, this process realizes the variation of lens focus；By the focal power of four constituent elements of reasonable distribution, make camera lens compared with
There is longer focal length under small length dimension.1 ultra-low dispersion glass is used at preceding group, significantly reduces optical lens second level
The aberrations such as spectrum significantly improve the resolution ratio of camera lens, achieve the purpose that be adapted to small pixel video camera.
In the present embodiment, the mechanical structure of the camera lens includes being equipped with the zoom compensation change of zoom group B and compensation group C
Focusing mechanism, the zoom compensation zoom mechanism include body tube 64, and the Inner Front End of the body tube, which is equipped with, is equipped with zoom group B's
Zoom component 42, the interior rear end of the body tube are equipped with the compensation component 44 for being equipped with compensation group C, and body tube front end is equipped with preceding solid
Determine component 41, preceding fixation kit includes the preceding group lens barrel 55 of fixed group A before being equipped with, and primary mirror tube rear end is equipped with rear fixation kit
45, rear fixation kit includes the rear group lens barrel 72 of fixed group D after being equipped with.
In the present embodiment, the front end of preceding group lens barrel is bolted with the pressing ring 52 for compressing biconvex lens A-1, the biconvex lens
AB spacer ring 53 is equipped between A-1 and the first gluing unit；The zoom component includes the zoom microscope base for being equipped with zoom group B, zoom
Component is installed on zoom Mobile base 63, and the compensation component includes the compensation microscope base for being equipped with compensation group C, the compensation component
It is installed on compensation Mobile base 67, the zoom component is connected by screw thread with zoom Mobile base 63, and the compensation component is logical
It crosses screw thread to be connected with compensation Mobile base 67, the zoom Mobile base, compensation Mobile base are by grinding fit system with guide rod 65
It is respectively arranged in body tube 64.
In the present embodiment, zoom cam is arranged in the body tube, the zoom cam 66 is placed in body tube 64,
It is installed in body tube 64 by cam cover 62, there are two uniformly distributed zoom curved groove and compensation for the setting of zoom cam 66
Curved groove, guide nail slot is provided on the body tube, and the zoom curved groove is moved by zoom guide pin through zoom straight trough and zoom
Dynamic seat is connected, and the compensated curve slot is connected by the compensation compensated straight trough of guide pin with compensation Mobile base.
In the present embodiment, the zoom motor of motor gear and the transmission of zoom cam-engaged is provided with outside body tube 64
617, zoom potentiometer 611 is engaged by potentiometer gear 613 with zoom cam 66, when zoom motor rotor makees positive and negative rotation fortune
When dynamic, make zoom potentiometer and zoom cam synchronous rotary, then the resistance value of zoom potentiometer changes, and passes through sampling appropriate
Circuit can take out the changing value of zoom potentiometer, and be transmitted to control centre, to realize the display of zoom value.
In the present embodiment, the front and rear ends of camera lens are respectively provided with the rolling bearing of supporting role, the rolling bearing 79 of rear end
It is installed in rear bearing block 73, the threaded connection hole there are six M3 is bored on rear bearing block.
In the present embodiment, pressing ring 77 is organized after the positive meniscus lens E1, diverging meniscus lens E2 and biconvex lens E3 pass through
Rear fixed group E is installed in rear group lens barrel 72, group after being equipped with first between the positive meniscus lens E1 and diverging meniscus lens E2
Spacer ring 712 organizes spacer ring 710 after being equipped with second between the diverging meniscus lens E2 and biconvex lens E3, and the rear bearing block passes through
Latter fixed group is installed in rear bearing block by rolling bearing 79.
Above-listed preferred embodiment, has been further described the object, technical solutions and advantages of the present invention, is answered
Understand, the foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (6)
1. a kind of short-wave infrared optics is without thermalization continuous magnification lens, it is characterised in that: the optical system of the camera lens includes edge
A, the zoom group B that focal power is negative, light focus are organized in the preceding fixation that the light focal power that incident direction is set gradually from front to back is positive
The rear fixation group E that the compensation group C, diaphragm D, focal power being positive are positive is spent, fixed group A includes positive meniscus lens A-1, bears before described
First gluing unit of meniscus lens A-2 and positive meniscus lens A-3 contiguity；The zoom group B includes biconcave lens B-1, positive bent moon
Second gluing unit of lens B-2 and biconcave lens B-3 contiguity；The compensation group C includes biconvex lens C-1, diverging meniscus lens C-2
With the third gluing unit of positive meniscus lens C-3 contiguity；Fixed group E includes positive meniscus lens E-1, diverging meniscus lens E-2 after described
With biconvex lens E-3.
2. short-wave infrared optics according to claim 1 is without thermalization continuous magnification lens, it is characterised in that: fixed before described
Airspace between group A and zoom group B is 4.16~22.87mm, the airspace between the zoom group B and compensation group C
For 2.78~34.16mm, the airspace between the compensation group C and rear fixed group E is 2.03~32mm, and the positive bent moon is saturating
Mirror A-3 uses the N-PK52A material of ultra-low dispersion.
3. short-wave infrared optics according to claim 1 is without thermalization continuous magnification lens, it is characterised in that: the positive bent moon
Airspace between lens A-1 and the first gluing unit is 0.74mm, the sky between the biconcave lens B-1 and the second gluing unit
1.21mm is divided between gas, the airspace between the biconvex lens C-1 and third gluing unit is 0.1mm, and the positive bent moon is saturating
Airspace between mirror E-1 and diverging meniscus lens E-2 is 0.66mm, between the diverging meniscus lens E-2 and biconvex lens E-3
Airspace be 14.78mm.
4. short-wave infrared optics according to claim 3 is without thermalization continuous magnification lens, it is characterised in that: the positive bent moon
The radius of curvature R 1 of mirror surface meets relational expression before lens A-1: 42.3mm≤R1≤44.987mm, and the radius of curvature R 2 of rear mirror surface is full
Sufficient relational expression: 198mm≤R2≤203.471mm, with a thickness of 5.18mm；The radius of curvature R 3 of mirror surface, which meets, before first gluing unit closes
Be formula: the radius of curvature R 4 of 113.01mm≤R3≤115.214mm, cemented surface meet relational expression: 23.8mm≤R4≤
The radius of curvature R 5 of 24.021mm, rear mirror surface meet relational expression: 485mm≤R5≤512.2mm, diverging meniscus lens A-2 with a thickness of
1.95mm, positive meniscus lens A-3 is with a thickness of 8.83mm；The radius of curvature R 6 of mirror surface meets relational expression before biconcave lens B-1 :-
The radius of curvature R 7 of 79.45mm≤R6≤- 77.232mm, rear mirror surface meet relational expression 69.1mm≤R7≤70.232mm, thickness
For 1.1mm；The radius of curvature R 8 of mirror surface meets relational expression: -73.213mm≤R8≤- 71.25mm, cemented surface before second gluing unit
Radius of curvature R 9 meet relational expression: -16.85mm≤R9≤- 16.452mm, the radius of curvature R 10 of rear mirror surface meets relational expression:
82mm≤R≤84.813mm, positive meniscus lens B-2 are with a thickness of 3.59mm, and biconcave lens B-3 is with a thickness of 1.1mm；Biconvex lens C-
The radius of curvature R 11 of mirror surface meets relational expression before 1: 47.5mm≤R11≤48.312mm, and the radius of curvature R 12 of rear mirror surface meets
Relational expression: -135.2mm≤R12≤- 132.2mm, with a thickness of 2.08mm；The radius of curvature R 13 of mirror surface meets before third gluing unit
Relational expression: the radius of curvature R 14 of 52mm≤R≤60.23mm, cemented surface meet relational expression: 10.89mm≤R14≤11.05mm,
The radius of curvature R 15 of mirror surface meets relational expression afterwards: 420mm≤R15≤99999999mm, diverging meniscus lens C-2 with a thickness of
0.95mm, positive meniscus lens C-3 is with a thickness of 3.89mm；The radius of curvature R 16 of mirror surface meets relational expression before positive meniscus lens E-1:
The radius of curvature R 17 of 10.5mm≤R16≤13.989mm, rear mirror surface meet relational expression: 20.45mm≤R17≤27.89mm, thick
Degree is 1.88mm；The radius of curvature R 18 of mirror surface meets relational expression before diverging meniscus lens E-2: 30.1mm≤R18≤36.79mm, after
The radius of curvature R 19 of mirror surface meets relational expression: 8.2mm≤R19≤9.35mm, with a thickness of 2.66mm；Mirror surface before biconvex lens E-3
Radius of curvature R 20 meet relational expression: the radius of curvature R 21 of 27mm≤RR20≤28.3mm, rear mirror surface meet relational expression :-
240.1mm≤R20≤- 210.01mm, with a thickness of 2.07mm.
5. short-wave infrared optics according to claim 1 is without thermalization continuous magnification lens, it is characterised in that: the camera lens
Mechanical structure includes being equipped with the zoom compensation zoom mechanism of zoom group B and compensation group C, and the zoom compensation zoom mechanism includes
Body tube, the Inner Front End of the body tube are equipped with the zoom component for being equipped with zoom group B, and the interior rear end of the body tube is equipped with peace
Compensation component equipped with compensation group C, body tube front end are equipped with preceding fixation kit, and preceding fixation kit includes fixed group A before being equipped with
Preceding group lens barrel, primary mirror tube rear end is equipped with rear fixation kit, and rear fixation kit includes the rear group lens barrel of fixed group D after being equipped with.
6. short-wave infrared optics according to claim 5 is without thermalization continuous magnification lens, it is characterised in that: preceding group lens barrel
Front end is bolted with the pressing ring for compressing biconvex lens A-1, and AB spacer ring is equipped between the biconvex lens A-1 and the first gluing unit；Institute
Stating zoom component includes the zoom microscope base for being equipped with zoom group B, and zoom component is installed on zoom Mobile base, the compensation component
Compensation microscope base including being equipped with compensation group C, the compensation component are installed on compensation Mobile base, and the zoom component passes through spiral shell
Line is connected with zoom Mobile base, and the compensation component is connected by screw thread with compensation Mobile base, is arranged in the body tube
There is zoom cam, the zoom motor of motor gear and the transmission of zoom cam-engaged is provided with outside body tube.
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| CN201810943194.7A CN109116530B (en) | 2018-08-17 | 2018-08-17 | Short-wave infrared optical athermalization continuous zoom lens |
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| CN201810943194.7A CN109116530B (en) | 2018-08-17 | 2018-08-17 | Short-wave infrared optical athermalization continuous zoom lens |
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| CN110596872A (en) * | 2019-09-20 | 2019-12-20 | 中国科学院长春光学精密机械与物理研究所 | Medium wave infrared continuous zooming system with reciprocating compensation group |
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| CN112817136A (en) * | 2021-02-10 | 2021-05-18 | 深圳天盈光电系统有限公司 | 30-time short wave infrared zoom lens |
| WO2021168742A1 (en) * | 2020-02-27 | 2021-09-02 | 南昌欧菲精密光学制品有限公司 | Zooming optical system, zooming module, and electronic device |
| CN115032777A (en) * | 2022-06-15 | 2022-09-09 | 湖北华中长江光电科技有限公司 | Double-working-waveband large-magnification wide-temperature continuous zooming optical lens and detector |
| WO2022198787A1 (en) * | 2021-03-22 | 2022-09-29 | 福建福光股份有限公司 | Telephoto visible light continuous zoom lens |
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