CN108873277A - A kind of big zoom ratio high definition zoom lens of compact wide-angle - Google Patents
A kind of big zoom ratio high definition zoom lens of compact wide-angle Download PDFInfo
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- CN108873277A CN108873277A CN201810943186.2A CN201810943186A CN108873277A CN 108873277 A CN108873277 A CN 108873277A CN 201810943186 A CN201810943186 A CN 201810943186A CN 108873277 A CN108873277 A CN 108873277A
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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 big zoom ratio high definition zoom lens of compact wide-angle, the camera lens includes preceding fixed group A, zoom group B, compensation group C, diaphragm D, rear fixed group E, and fixed group A includes the first gluing unit and positive meniscus lens A-4 of biconvex lens A-1, diverging meniscus lens A-2 and biconvex lens A-3 contiguity before described；The zoom group B includes the second gluing unit and plano-concave lens B-3 of biconvex lens B-1 and biconcave lens B-2 contiguity；The compensation group C includes the third gluing unit of biconvex lens C-1, diverging meniscus lens C-2 and biconvex lens C-3 contiguity；Fixed group E includes the 4th gluing unit of biconcave lens E-1 and plano-convex lens E-2 contiguity, the 5th gluing unit and biconvex lens E-8 of biconvex lens E-3, diverging meniscus lens E-4, plano-convex lens E-5, biconcave lens E-6 and biconvex lens E-7 contiguity after described.Camera lens of the present invention has big visual field, big zoom ratio, and small in size and light-weight, the level of resolution easy to carry for improving focal length section can be adapted to two mega pixel high definition cameras.
Description
Technical field
The present invention relates to a kind of big zoom ratio high definition zoom lens of compact wide-angle.
Background technique
The horizontal promotion of International Technology confrontation, to airborne, vehicle-mounted detection system, more stringent requirements are proposed, is especially embodied in
Densification, lightweight, high-definition image output etc., while also requiring the panorama that can make the small multiplying power in big region to target
Search, and the amplifying observation of the big multiplying power in zonule can be made.Therefore must on the basis of tradition machinery compensation zoom lens,
Change mentality of designing, Curve guide impeller method, the volume for overcoming traditional four Component Structures generally existing is larger, zoom ratio is small, differentiates
The disadvantage that rate is lower, picture quality is bad makes it to match with high-definition camera, promotes scientific and technological antagonism.
Summary of the invention
In view of this, small in size, the compact with big zoom ratio is wide the object of the present invention is to provide a kind of compact-sized
The big zoom ratio high definition zoom lens in angle.
The present invention is realized using following scheme：A kind of big zoom ratio high definition zoom lens of compact wide-angle, the camera lens
Optical 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
Zoom group B, the rear fixed group E that is positive of the compensation group C that is positive of focal power, diaphragm D, focal power, fixed group A includes double before described
The first gluing unit and positive meniscus lens A-4 of convex lens A-1, diverging meniscus lens A-2 and biconvex lens A-3 contiguity；The zoom
Group B includes the second gluing unit and plano-concave lens B-3 of biconvex lens B-1 and biconcave lens B-2 contiguity；The compensation group C includes
The third gluing unit of biconvex lens C-1, diverging meniscus lens C-2 and biconvex lens C-3 contiguity；Fixed group E includes concave-concave after described
It is the 4th gluing unit that lens E-1 and plano-convex lens E-2 touches, biconvex lens E-3, diverging meniscus lens E-4, plano-convex lens E-5, double
The 5th gluing unit and biconvex lens E-8 of concavees lens E-6 and biconvex lens E-7 contiguity.
Further, the airspace between the preceding fixed group A and zoom group B is 2.85~73mm, the zoom group B
Airspace between compensation group C is 5.46~105.58mm, the airspace between the compensation group C and rear fixed group E
The FCD100 material of ultra-low dispersion is used for 2.03~32mm, the biconvex lens A-3 and positive meniscus lens A-4.
Further, the airspace between the biconvex lens A-1 and the first gluing unit is 0.73mm, first glue
Being combined the airspace between positive meniscus lens A-4 is 0.12mm, the sky between second gluing unit and plano-concave lens B-3
4.71mm is divided between gas, the airspace between the biconvex lens C-1 and third gluing unit is 0.1mm, and the described 4th is glued
Airspace between group and biconvex lens E-3 is 11.76mm, the sky between the biconvex lens E-3 and diverging meniscus lens E-4
4.8mm is divided between gas, the airspace between the diverging meniscus lens E-4 and plano-convex lens E-5 is 0.74mm, and the plano-convex is saturating
Airspace between mirror E-5 and the 5th gluing unit is 1.37mm, the air between the 5th gluing unit and biconvex lens E-8
Between be divided into 4.32mm.
Further, the radius of curvature R 1 of mirror surface meets relational expression before the biconvex lens A-1：680mm≤R1≤
The radius of curvature R 2 of 685mm, rear mirror surface meet relational expression：- 685mm≤R2≤- 680mm, with a thickness of 4.98mm；First gluing unit
The radius of curvature R 3 of preceding mirror surface meets relational expression：The radius of curvature R 4 of 165mm≤R3≤175mm, cemented surface meet relational expression：
The radius of curvature R 5 of 82.1mm≤R4≤83.98mm, rear mirror surface meet relational expression：- 1565mm≤R5≤- 1825.1mm is born curved
Month lens A-2 is with a thickness of 3.77mm, and biconvex lens A-3 is with a thickness of 11.2mm, the radius of curvature R 6 of mirror surface before positive meniscus lens A-4
Meet relational expression：The radius of curvature R 7 of 71.8mm≤R6≤72.254mm, rear mirror surface meet relational expression：241.232mm≤R7≤
253.46mm with a thickness of 9.44mm；The radius of curvature R 8 of mirror surface meets relational expression before second gluing unit：197mm≤R8≤
The radius of curvature R 9 of 252.32mm, cemented surface meet relational expression：- 67.3mm≤R9≤- 65.945mm, the radius of curvature of rear mirror surface
R10 meets relational expression：With a thickness of 10.69mm, biconcave lens B-2 is thick by 26.875mm≤R10≤27.024mm, biconvex lens B-1
Degree is 1.67mm；The radius of curvature R 11 of mirror surface meets relational expression before plano-concave lens B-3：-33.235mm≤R11≤-
33.045mm, rear mirror surface is plane, with a thickness of 1.63mm；The radius of curvature R 13 of mirror surface meets relational expression before biconvex lens C-1：
The radius of curvature R 14 of 59.87mm≤R13≤60.23mm, rear mirror surface meet relational expression：- 60.23mm≤R14≤- 59.87mm,
With a thickness of 3.8mm；The radius of curvature R 15 of mirror surface meets relational expression before third gluing unit：49.895mm≤R15≤50.105mm,
The radius of curvature R 16 of cemented surface meets relational expression：The radius of curvature R 17 of 24.12mm≤R16≤25.895mm, rear mirror surface meet
Relational expression：- 77mm≤R17≤- 74.235mm, diverging meniscus lens C-2 are with a thickness of 0.95mm, and biconvex lens C-3 is with a thickness of 4mm；
The radius of curvature R 18 of mirror surface meets relational expression before 4th gluing unit：- 33.2mm≤R18≤- 31.157mm, the curvature of cemented surface
Radius R19 meets relational expression：25.17mm≤R19≤25.345mm, rear mirror surface are plane, biconcave lens E-1 with a thickness of 0.8mm,
Plano-convex lens E-2 is with a thickness of 1.67mm；The radius of curvature R 21 of mirror surface meets relational expression before biconvex lens E-3：64.23mm≤R21
The radius of curvature R 22 of≤64.876mm, rear mirror surface meet relational expression：- 30.254≤R22≤- 29.998, with a thickness of 1.9mm；It is negative
The radius of curvature R 23 of mirror surface meets relational expression before meniscus lens E-4：56.3mm≤R23≤57.9mm, the radius of curvature of rear mirror surface
R24 meets relational expression 17.2mm≤R24≤18.98mm, with a thickness of 1.5mm；Mirror surface is plane, rear mirror surface before plano-convex lens E-5
Radius of curvature R 26 meet relational expression：- 23.12mm≤R26≤- 22.471mm, with a thickness of 1.5mm；Mirror surface before 5th gluing unit
Radius of curvature R 27 meet relational expression：The radius of curvature R 28 of -13.777mm≤R27≤- 13.725mm, cemented surface meet relationship
Formula：The radius of curvature R 29 of 10.4mm≤R28≤10.775mm, rear mirror surface meet relational expression：24.012mm≤R29≤-
23.974mm, biconcave lens E-6 are with a thickness of 1mm, and biconvex lens E-7 is with a thickness of 3mm；The curvature of mirror surface half before biconvex lens E-8
Diameter R30 meets relational expression：The radius of curvature R 31 of 23.2mm≤R30≤24.716mm, rear mirror surface meet relational expression：-69mm≤
R31≤- 66.537mm, with a thickness of 2.65mm.
Further, the mechanical structure of the camera lens includes positioned at the zoom of zoom group B and compensation group location of C compensation zoom
Mechanism, the focusing component positioned at preceding fixed group location A, the DC auto iris component positioned at the position diaphragm D, be located at after a fixed group E
The rear fixation kit of position, the connection pedestal positioned at the camera assembly of imaging target surface position and on rear side of camera lens.
Further, the zoom compensation zoom mechanism includes body tube, and the Inner Front End of the body tube, which is equipped with, to be equipped with
The zoom component of zoom group B, the interior rear end of the body tube are equipped with the compensation component for being equipped with compensation group C, the zoom component
It is provided with zoom balladeur train between body tube, compensation balladeur train, the body tube are provided between the compensation component and body tube
It is arranged with zoom cam outside, the zoom motor with the transmission of zoom cam-engaged, the electricity of the zoom motor are provided with outside body tube
Machine gear is engaged with the gear of zoom cam.
Further, the focusing component includes focusing body tube, and fixed group A is placed in preceding group lens barrel before described, institute
Preceding group lens barrel is stated through grinding fit system in focusing body tube, the focusing body tube is arranged with focusing cam outside, adjusts
The focusing motor with focusing cam engaged transmission, the motor gear and focusing cam of the focusing motor are provided with outside burnt body tube
Gear engagement.
Compared with prior art, the invention has the advantages that：（1）Have the advantages that big visual field, big zoom ratio, and
It is light-weight, it is easy to carry；（2）Second order spectrum aberration is reduced, and make so that preceding group of focal power is smaller using positive group collocation structure
With ultra-low dispersion material, the level of resolution of focal length section is greatly improved, can be adapted to two mega pixel high definition cameras；（3）It closes
Reason distribution focal power realize big zoom ratio under the premise of optics overall length is lesser, have the characteristics that densification, take the photograph more than（Optics
The ratio of overall length and focal length）It is reduced to 0.6.
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 embodiment of the present invention；
Fig. 2 is structure general assembly drawing of the embodiment of the present invention；
Fig. 3 is focusing component organigram in the embodiment of the present invention；
Fig. 4 is the side view of Fig. 3；
Fig. 5 is cam pack end view in the embodiment of the present invention；
Fig. 6 is zoom of embodiment of the present invention compensation zoom mechanism organigram；
Fig. 7 is auto iris stack face view in the embodiment of the present invention；
Fig. 8 is auto iris component sectional view in the embodiment of the present invention；
Fig. 9 is the left view of Fig. 8；
MTF figure when Figure 10 is the inventive embodiments focal length；
MTF figure when Figure 11 is the inventive embodiments short focus；
Figure label explanation：
41- focusing component, 42- zoom component, 43- compensation component, 44- auto iris component, 45- cam pack, 46- video camera
Component；
51- positive meniscus lens A-4,52- biconvex lens A-3,53- diverging meniscus lens A-2, wherein A-2 and A-3 are glued together,
Pressing ring, 56- focusing cam pressing ring, 57- focusing cam, 58- focusing body tube, 59- focusing are organized before 54- biconvex lens A-1,55-
Guide pin organizes spacer ring 1 before 510-, organizes spacer ring 2,512- preceding group lens barrel before 511-, and 513- focuses banking pin, and 514- focuses limiting bracket
1,515- microswitch, 516- focusing limiting bracket 2,517- focusing motor, 518- focusing gear, 519- focusing motor rack,
520- focusing potentiometer frame, 521- focusing potentiometer, 521- focusing potentiometer gear；
61- adjusts gasket, 62- steel ball, 63- body tube, 64- zoom cam, 65- zoom group B, 66- zoom balladeur train, 67- compensation
Group C, 68- compensation guide pin, 69- compensation balladeur train, 610- zoom cam pressing ring, 611- zoom guide pin, 612- zoom limiting bracket 1,
613- zoom banking pin, 614- microswitch, 615- zoom motor rack, 616- zoom limiting bracket 2,617- zoom motor,
618- zoom motor gear, 619- zoom potentiometer, 520- zoom potentiometer gear；
71- biconcave lens E-1,72- plano-convex lens E-2,73- biconvex lens E-3,74- diverging meniscus lens E-4,75- plano-convex lens
Pressing ring is organized after E-5,76- biconcave lens E-6,77- biconvex lens E-7,78- biconvex lens E-8,79-, organizes spacer ring after 710-,
Spacer ring is organized after 711-, spacer ring is organized after 712-, organizes spacer ring after 713-, 714- light bar seat, 715- CD-ROM drive pressing plate, 716-DC CD-ROM drive,
717- dust excluding plate, 718- CD-ROM drive trimming loop.
Specific embodiment
As shown in Fig. 1 ~ 11, a kind of big zoom ratio high definition zoom lens of compact wide-angle, the optical system packet of the camera lens
Include the preceding fixed group A being positive along the light focal power that incident direction is set gradually from front to back, the zoom group B that focal power is negative,
The rear fixed group E that compensation group C that focal power is positive, diaphragm D, focal power are positive, before described a fixed group A include biconvex lens A-1,
The first gluing unit and positive meniscus lens A-4 of diverging meniscus lens A-2 and biconvex lens A-3 contiguity；The zoom group B includes biconvex
The second gluing unit and plano-concave lens B-3 of lens B-1 and biconcave lens B-2 contiguity；The compensation group C include biconvex lens C-1,
The third gluing unit of diverging meniscus lens C-2 and biconvex lens C-3 contiguity；Fixed group E includes biconcave lens E-1 and plano-convex after described
4th gluing unit of lens E-2 contiguity, biconvex lens E-3, diverging meniscus lens E-4, plano-convex lens E-5, biconcave lens E-6 and double
The 5th gluing unit and biconvex lens E-8 of convex lens E-7 contiguity.
In the present embodiment, the airspace between the preceding fixed group A and zoom group B is 2.85~73mm, the change
The airspace between group B and compensation group C is 5.46~105.58mm again, the air between the compensation group C and rear fixed group of E
Between be divided into 2.03~32mm, the biconvex lens A-3 and positive meniscus lens A-4 use ultra-low dispersion FCD100 material.
In the present embodiment, the airspace between the biconvex lens A-1 and the first gluing unit is 0.73mm, described the
Airspace between one gluing unit and positive meniscus lens A-4 is 0.12mm, between second gluing unit and plano-concave lens B-3
Airspace be 4.71mm, airspace between the biconvex lens C-1 and third gluing unit is 0.1mm, the described 4th
Airspace between gluing unit and biconvex lens E-3 is 11.76mm, between the biconvex lens E-3 and diverging meniscus lens E-4
Airspace be 4.8mm, airspace between the diverging meniscus lens E-4 and plano-convex lens E-5 is 0.74mm, described flat
Airspace between convex lens E-5 and the 5th gluing unit is 1.37mm, between the 5th gluing unit and biconvex lens E-8
Airspace is 4.32mm.
In the present embodiment, the radius of curvature R 1 of mirror surface meets relational expression before the biconvex lens A-1：680mm≤R1≤
The radius of curvature R 2 of 685mm, rear mirror surface meet relational expression：- 685mm≤R2≤- 680mm, with a thickness of 4.98mm, material is
LAFN23；The radius of curvature R 3 of mirror surface meets relational expression before first gluing unit：165mm≤R3≤175mm, the curvature half of cemented surface
Diameter R4 meets relational expression：The radius of curvature R 5 of 82.1mm≤R4≤83.98mm, rear mirror surface meet relational expression：-1565mm≤R5
≤ -1825.1mm, diverging meniscus lens A-2 with a thickness of 3.77mm, material E-FD10, biconvex lens A-3 with a thickness of 11.2mm,
Material is FCD100, and the radius of curvature R 6 of mirror surface meets relational expression before positive meniscus lens A-4：71.8mm≤R6≤72.254mm,
The radius of curvature R 7 of mirror surface meets relational expression afterwards：241.232mm≤R7≤253.46mm, with a thickness of 9.44mm, material is
FCD100；The radius of curvature R 8 of mirror surface meets relational expression before second gluing unit：197mm≤R8≤252.32mm, the song of cemented surface
Rate radius R9 meets relational expression：The radius of curvature R 10 of -67.3mm≤R9≤- 65.945mm, rear mirror surface meet relational expression：
With a thickness of 10.69mm, material TAFD25, biconcave lens B-2 are thick by 26.875mm≤R10≤27.024mm, biconvex lens B-1
Degree is 1.67mm, material LASFN9；The radius of curvature R 11 of mirror surface meets relational expression before plano-concave lens B-3：-33.235mm≤
R11≤- 33.045mm, rear mirror surface is plane, with a thickness of 1.63mm, material TAFD33；The song of mirror surface before biconvex lens C-1
Rate radius R13 meets relational expression：The radius of curvature R 14 of 59.87mm≤R13≤60.23mm, rear mirror surface meet relational expression：-
60.23mm≤R14≤- 59.87mm, with a thickness of 3.8mm, material LAFN23；The radius of curvature of mirror surface before third gluing unit
R15 meets relational expression：The radius of curvature R 16 of 49.895mm≤R15≤50.105mm, cemented surface meet relational expression：24.12mm≤
The radius of curvature R 17 of R16≤25.895mm, rear mirror surface meet relational expression：- 77mm≤R17≤- 74.235mm, diverging meniscus lens
C-2 is with a thickness of 0.95mm, and material SF57, biconvex lens C-3 are with a thickness of 4mm, material N-PK52A；Before 4th gluing unit
The radius of curvature R 18 of mirror surface meets relational expression：- 33.2mm≤R18≤- 31.157mm, the radius of curvature R 19 of cemented surface, which meets, closes
It is formula：25.17mm≤R19≤25.345mm, rear mirror surface are plane, and biconcave lens E-1 puts down with a thickness of 0.8mm, material F1
Convex lens E-2 is with a thickness of 1.67mm, material TAFD25；The radius of curvature R 21 of mirror surface meets relational expression before biconvex lens E-3：
The radius of curvature R 22 of 64.23mm≤R21≤64.876mm, rear mirror surface meet relational expression：- 30.254≤R22≤- 29.998 is thick
Degree is 1.9mm, material N-LLF6；The radius of curvature R 23 of mirror surface meets relational expression before diverging meniscus lens E-4：56.3mm≤
The radius of curvature R 24 of R23≤57.9mm, rear mirror surface meet relational expression 17.2mm≤R24≤18.98mm, with a thickness of 1.5mm, material
Material is TAFD33；Mirror surface is plane before plano-convex lens E-5, and the radius of curvature R 26 of rear mirror surface meets relational expression：-23.12mm≤
R26≤- 22.471mm, with a thickness of 1.5mm, material N-SF5；The radius of curvature R 27 of mirror surface meets relationship before 5th gluing unit
Formula：The radius of curvature R 28 of -13.777mm≤R27≤- 13.725mm, cemented surface meet relational expression：10.4mm≤R28≤
The radius of curvature R 29 of 10.775mm, rear mirror surface meet relational expression：24.012mm≤R29≤- 23.974mm, biconcave lens E-6 are thick
Degree is 1mm, and material N-LAF21, biconvex lens E-7 are with a thickness of 3mm, material LF7；The song of mirror surface before biconvex lens E-8
Rate radius R30 meets relational expression：The radius of curvature R 31 of 23.2mm≤R30≤24.716mm, rear mirror surface meet relational expression：-69mm
≤ R31≤- 66.537mm, with a thickness of 2.65mm, material N-FK5, between the air between biconvex lens E-8 and imaging target surface
It is divided into 10.06 ± 0.25mm.
Following optical index has been reached by the optical system that above-mentioned lens set is constituted：
1, focal length：11.85mm~360mm；
2, field angle：1.66 °~50.33 °；
3, relative aperture：D/f ' is greater than 1/4.5；
4, optical transfer function：When transmission function spatial frequency 105lp/mm, center MTF >=0.55 when focal length, short focus, in maximum
Visual field still has good image quality, peripheral field MTF >=0.23,2/3 with two mega pixels " target surface size, 1920 ×
The cmos camera of 1080 pixels is adapted to.
5, optics overall length is less than 218mm；
6, zoom whole process zooming time is 5S；
7, operating temperature：- 40 DEG C~60 DEG C.
The shortening of optical system overall length simultaneously reduces radial dimension, realizes densification, the moving range of zoom group and compensation group
It is small, while being designed using steepest zoom cam curve, as the multiplying power m2=- 1 of zoom group, the multiplying power of compensation group is m31=m32
30 times of optical system of big zoom ratio is realized in=- 1, seamlessly transits in the focal length point position, steepest zoom is realized, so that zoom mistake
The lead of journey is minimum, and optics overall length is most short, makes the compact of whole system.
The big zoom ratio high definition zoom lens of compact wide-angle of the present invention：（1）Have the advantages that big visual field, big zoom ratio, and
It is light-weight, it is easy to carry；（2）Second order spectrum aberration is reduced, and make so that preceding group of focal power is smaller using positive group collocation structure
With ultra-low dispersion material, the level of resolution of focal length section is greatly improved, can be adapted to two mega pixel high definition cameras；（3）It closes
Reason distribution focal power realize big zoom ratio under the premise of optics overall length is lesser, have the characteristics that densification, take the photograph more than（Optics
The ratio of overall length and focal length）It is reduced to 0.6.
The preceding fixed compensation organizing A, the zoom group B that focal power is negative, focal power and being positive that this camera lens is positive using focal power
Rear fixed group tetra- Component Structure of E that group C, focal power are positive, when zoom group is moved forward and backward, compensation group is mobile to guarantee image planes simultaneously
Constant, this process realizes the variation of lens focus；By the focal power of four constituent elements of reasonable distribution, make camera lens lesser
There is longer focal length under length dimension.To pursue higher resolution ratio, when optical design, preceding group is set suitably to complicate, using four
Chip architecture, improves the focal power ability to take the burden of the highest preceding fixed group A of ray height, and uses two panels ultra-low dispersion glass,
The aberrations such as optical lens second order spectrum are significantly reduced, the resolution ratio of camera lens is significantly improved, reach two mega pixels, it can be with
High-definition camera adaptation.
In the present embodiment, the mechanical structure of the camera lens includes compensating positioned at the zoom of zoom group B and compensation group location of C
Zoom mechanism, the focusing component positioned at preceding fixed group location A, the DC auto iris component positioned at the position diaphragm D, be located at after it is fixed
Rear fixation kit, the connection pedestal positioned at the camera assembly of imaging target surface position and on rear side of camera lens of the group position E, even
The connecting hole for there are 4 Φ 5.5mm on pedestal is connect, the rear end of camera lens is equipped with video camera and adjusts structure, and fixed group A, which is set to, before described adjusts
In burnt component 31, the zoom group B is set in zoom component 32, and the compensation group C is set in compensation component 33, the diaphragm
D and rear fixation kit E are set in auto iris component 34, and the imaging target surface is set in camera assembly.
In the present embodiment, the zoom compensation zoom mechanism includes body tube, and the Inner Front End of the body tube is equipped with peace
Zoom component equipped with zoom group B, the interior rear end of the body tube are equipped with the compensation component for being equipped with compensation group C, the zoom
It is provided with zoom balladeur train between component and body tube, compensation balladeur train, the master are provided between the compensation component and body tube
It is arranged with zoom cam outside lens barrel, the zoom motor with the transmission of zoom cam-engaged, the zoom motor are provided with outside body tube
Motor gear engaged with the gear of zoom cam.
In the present embodiment, the zoom group B65 is placed in composition zoom component on zoom balladeur train 66 by attachment screw
42；Compensation group C67 is placed on compensation balladeur train 69 by attachment screw and forms compensation component 43；The zoom balladeur train 66 and compensation
By that can be moved forward and backward in body tube 63, zoom cam 64 is placed in body tube 63 by steel ball 62 and forms the axis of rolling balladeur train 69
It holds, is locked by zoom cam pressing ring 610；The zoom cam 64 is by the requirement processing zoom of the optical zoom equation of motion, compensation
Curved groove is respectively connected to zoom cam 64 and zoom balladeur train 66, compensation balladeur train 69 with zoom guide pin 611 and compensation guide pin 68
Together.
In the present embodiment, zoom motor 519, zoom potentiometer 520, Hall element 517 form power zoom mechanism, institute
State zoom motor 617, zoom potentiometer 619 is placed in 63 on body tube by zoom motor rack 615, the microswitch 614
It is placed on body tube by zoom limiting bracket 612 and zoom limiting bracket 616 respectively；Zoom motor gear 618 and zoom
Cam 64 is meshed, and when 617 rotor of zoom motor does positive and negative rotary motion, zoom cam 64 is driven to correspondingly rotate, led to
Cross zoom, compensated curve slot and zoom guide pin 611, compensation guide pin 68 drives zoom balladeur train 66, compensation balladeur train 69 is by zoom, compensation
The mode of curved groove moves, and two on body tube straight trough plays the role of limiting zoom guide pin, compensation guide pin, and keeps zoom sliding
Frame, the rotary motion for compensating balladeur train become moving along a straight line.Strict control zoom guide pin and the curve for compensating guide pin and zoom cam
The fit clearance between straight-line groove on slot and body tube guarantees that zoom component 42 and compensation component 43 slide steadily, without cassette tape.
Realize that zoom component and compensation component do linear motion back and forth by zoom motion equation requirement by the rotation of zoom motor in this way,
To realize the consecutive variations function of system focal length.When the focal length of system changes, zoom potentiometer gear 619 and zoom
Cam 64 engages, and synchronous occurs opposite rotation with zoom cam 64, and the resistance value of zoom potentiometer 619 changes, passes through
Sample circuit appropriate can find out the changing value of zoom potentiometer 619, and be transmitted to control centre, to realize the aobvious of zoom value
Show；Conversely, respective resistance values order is provided by control centre, it can be achieved that focal length real-time control.
The gear of precision potentiator is engaged with the gear of zoom cam simultaneously, and the zoom cam is provided with two zoom songs
Wire casing and compensated curve slot, two groups of zoom straight troughs and compensation straight trough are provided on the body tube, and the zoom curved groove passes through
Zoom guide pin component is connected through zoom straight trough with zoom balladeur train, and the compensated curve slot is compensated straight by compensation guide pin component
Slot is connected with compensation balladeur train.
In the present embodiment, the focusing component includes focusing body tube, and fixed group A is placed in preceding group lens barrel before described
Interior, the preceding group lens barrel can be moved forward and backward in focusing body tube, and focusing cam, focusing master are arranged with outside the focusing body tube
The focusing motor with focusing cam engaged transmission, the motor gear of the focusing motor and the tooth of focusing cam are provided with outside lens barrel
Wheel engagement, preceding group lens barrel 512 are placed on 58 focusing body tubes by the uniformly distributed linear straight trough focusing guide pin 59 of 3 120o.
Focus motor 517, focusing gear 518, focusing motor rack 519, focusing body tube 58, microswitch 515, focusing potentiometer 520,
Focusing potentiometer frame 521, focusing limiting bracket 514, focusing limiting bracket 516 form focusing component.
In the present embodiment, the focusing motor 517 is placed on focusing body tube 58 by motor rack 519 of focusing, institute
It states microswitch 515 to be placed on focusing body tube 58 by focusing limiting bracket 514 and focusing limiting bracket 516 respectively, institute
It states and offers the uniformly distributed linear skewed slot of precision machined 3 120o on focusing cam 57, with focusing guide pin 59 and focusing body tube
58 link together, and focusing gear 518 is meshed with focusing cam 57, rotate when focusing motor 517 is powered, pass through gear of focusing
518 drive focusing cams 57 rotate, by focusing body tube 58 on straight trough limit, the rotation of preceding group lens barrel 512 limited from
And the linear motion in straight trough is only done, to realize the focusing function to far and near target.When the adjustable range of system changes,
Focusing potentiometer gear 522 rotates focusing potentiometer 521, then potentiometer 521 of focusing by engaging with focusing cam 57
Resistance value changes, and the changing value of focusing potentiometer 521 can be taken out by sample circuit appropriate, and is transmitted to control centre,
To realize the display of focussing distance；Conversely, providing order by control centre, it can be achieved that focussing distance real-time control.
In the present embodiment, the auto iris component 44 is to organize pressing ring 79 after rear fixed group E is placed in 714 light bars
In seat, spacer ring 713 is organized after and separates the gluing unit that biconcave lens E-1 touches with plano-convex lens E-2 with biconvex lens E-3, is used
Group spacer ring 712 separates biconvex lens E-3 and diverging meniscus lens E-4 afterwards, and spacer ring 711 is organized after by plano-convex lens E-5 and concave-concave
The gluing unit of lens E-6 and biconvex lens E-7 contiguity separates, and spacer ring 710 is organized after by biconcave lens E-6 and biconvex lens E-7
The gluing unit of contiguity is separated with biconvex lens E-8, and 716DC CD-ROM drive is fixed on 714 light bar seats using CD-ROM drive pressing plate 715.
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 (7)
1. a kind of big zoom ratio high definition zoom lens of compact wide-angle, 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
Spend the compensation group C being positive, the rear fixed group E that diaphragm D, focal power are positive, before described a fixed group A include biconvex lens A-1, bear it is curved
The first gluing unit and positive meniscus lens A-4 that moon lens A-2 and biconvex lens A-3 touches；The zoom group B includes biconvex lens
The second gluing unit and plano-concave lens B-3 of B-1 and biconcave lens B-2 contiguity；The compensation group C include biconvex lens C-1, bear it is curved
The third gluing unit that moon lens C-2 and biconvex lens C-3 touches；Fixed group E includes biconcave lens E-1 and plano-convex lens after described
The 4th gluing unit, biconvex lens E-3, diverging meniscus lens E-4, plano-convex lens E-5, biconcave lens E-6 and the lenticular of E-2 contiguity
The 5th gluing unit and biconvex lens E-8 of mirror E-7 contiguity.
2. the big zoom ratio high definition zoom lens of compact wide-angle according to claim 1, it is characterised in that：It is fixed before described
Airspace between group A and zoom group B is 2.85~73mm, and the airspace between the zoom group B and compensation group C is
Airspace between 5.46~105.58mm, the compensation group C and rear fixed group E is 2.03~32mm, the biconvex lens
A-3 and positive meniscus lens A-4 uses the FCD100 material of ultra-low dispersion.
3. the big zoom ratio high definition zoom lens of compact wide-angle according to claim 1, it is characterised in that：The lenticular
Airspace between mirror A-1 and the first gluing unit is 0.73mm, the sky between first gluing unit and positive meniscus lens A-4
0.12mm is divided between gas, the airspace between second gluing unit and plano-concave lens B-3 is 4.71mm, the biconvex lens
Airspace between C-1 and third gluing unit is 0.1mm, between the air between the 4th gluing unit and biconvex lens E-3
It is divided into 11.76mm, the airspace between the biconvex lens E-3 and diverging meniscus lens E-4 is 4.8mm, and the negative bent moon is saturating
Airspace between mirror E-4 and plano-convex lens E-5 is 0.74mm, the sky between the plano-convex lens E-5 and the 5th gluing unit
1.37mm is divided between gas, the airspace between the 5th gluing unit and biconvex lens E-8 is 4.32mm.
4. the big zoom ratio high definition zoom lens of compact wide-angle according to claim 3, it is characterised in that：The lenticular
The radius of curvature R 1 of mirror surface meets relational expression before mirror A-1：The radius of curvature R 2 of 680mm≤R1≤685mm, rear mirror surface meet relationship
Formula：- 685mm≤R2≤- 680mm, with a thickness of 4.98mm；The radius of curvature R 3 of mirror surface meets relational expression before first gluing unit：
The radius of curvature R 4 of 165mm≤R3≤175mm, cemented surface meet relational expression：82.1mm≤R4≤83.98mm, the song of rear mirror surface
Rate radius R5 meets relational expression：- 1565mm≤R5≤- 1825.1mm, diverging meniscus lens A-2 is with a thickness of 3.77mm, biconvex lens
A-3 is with a thickness of 11.2mm, and the radius of curvature R 6 of mirror surface meets relational expression before positive meniscus lens A-4：71.8mm≤R6≤
The radius of curvature R 7 of 72.254mm, rear mirror surface meet relational expression：241.232mm≤R7≤253.46mm, with a thickness of 9.44mm；The
The radius of curvature R 8 of mirror surface meets relational expression before two gluing units：The radius of curvature R 9 of 197mm≤R8≤252.32mm, cemented surface are full
Sufficient relational expression：The radius of curvature R 10 of -67.3mm≤R9≤- 65.945mm, rear mirror surface meet relational expression：26.875mm≤R10≤
27.024mm, biconvex lens B-1 are with a thickness of 10.69mm, and biconcave lens B-2 is with a thickness of 1.67mm；Mirror surface before plano-concave lens B-3
Radius of curvature R 11 meets relational expression：- 33.235mm≤R11≤- 33.045mm, rear mirror surface is plane, with a thickness of 1.63mm；It is double
The radius of curvature R 13 of mirror surface meets relational expression before convex lens C-1：59.87mm≤R13≤60.23mm, the radius of curvature of rear mirror surface
R14 meets relational expression：- 60.23mm≤R14≤- 59.87mm, with a thickness of 3.8mm；The radius of curvature of mirror surface before third gluing unit
R15 meets relational expression：The radius of curvature R 16 of 49.895mm≤R15≤50.105mm, cemented surface meet relational expression：24.12mm≤
The radius of curvature R 17 of R16≤25.895mm, rear mirror surface meet relational expression：- 77mm≤R17≤- 74.235mm, diverging meniscus lens
C-2 is with a thickness of 0.95mm, and biconvex lens C-3 is with a thickness of 4mm；The radius of curvature R 18 of mirror surface meets relationship before 4th gluing unit
Formula：The radius of curvature R 19 of -33.2mm≤R18≤- 31.157mm, cemented surface meet relational expression：25.17mm≤R19≤
25.345mm, rear mirror surface are plane, and biconcave lens E-1 is with a thickness of 0.8mm, and plano-convex lens E-2 is with a thickness of 1.67mm；Biconvex lens
The radius of curvature R 21 of mirror surface meets relational expression before E-3：The radius of curvature R 22 of 64.23mm≤R21≤64.876mm, rear mirror surface are full
Sufficient relational expression：- 30.254≤R22≤- 29.998, with a thickness of 1.9mm；The radius of curvature R 23 of mirror surface is full before diverging meniscus lens E-4
Sufficient relational expression：56.3mm≤R23≤57.9mm, the radius of curvature R 24 of rear mirror surface meet relational expression 17.2mm≤R24≤
18.98mm with a thickness of 1.5mm；Mirror surface is plane before plano-convex lens E-5, and the radius of curvature R 26 of rear mirror surface meets relational expression：-
23.12mm≤R26≤- 22.471mm, with a thickness of 1.5mm；The radius of curvature R 27 of mirror surface meets relational expression before 5th gluing unit：-
The radius of curvature R 28 of 13.777mm≤R27≤- 13.725mm, cemented surface meet relational expression：10.4mm≤R28≤10.775mm,
The radius of curvature R 29 of mirror surface meets relational expression afterwards：24.012mm≤R29≤- 23.974mm, biconcave lens E-6 with a thickness of 1mm,
Biconvex lens E-7 is with a thickness of 3mm；The radius of curvature R 30 of mirror surface meets relational expression before biconvex lens E-8：23.2mm≤R30≤
The radius of curvature R 31 of 24.716mm, rear mirror surface meet relational expression：- 69mm≤R31≤- 66.537mm, with a thickness of 2.65mm.
5. the big zoom ratio high definition zoom lens of compact wide-angle according to claim 1, it is characterised in that：The camera lens
Mechanical structure includes positioned at the zoom of zoom group B and compensation group location of C compensation zoom mechanism, positioned at the tune of preceding fixed group location A
Burnt component, positioned at the position diaphragm D DC auto iris component, be located at after the fixed group position E rear fixation kit, be located at imaging target
The camera assembly of face position and the connection pedestal on rear side of camera lens.
6. the big zoom ratio high definition zoom lens of compact wide-angle according to claim 5, it is characterised in that：The zoom is mended
Repaying zoom mechanism includes body tube, and the Inner Front End of the body tube is equipped with the zoom component for being equipped with zoom group B, the body tube
Interior rear end be equipped with the compensation component of compensation group C be installed, zoom balladeur train, institute are provided between the zoom component and body tube
It states and is provided with compensation balladeur train between compensation component and body tube, zoom cam is arranged with outside the body tube, is arranged outside body tube
There is the zoom motor with the transmission of zoom cam-engaged, the motor gear of the zoom motor is engaged with the gear of zoom cam.
7. the big zoom ratio high definition zoom lens of compact wide-angle according to claim 5, it is characterised in that：The focusing group
Part includes focusing body tube, and fixed group A is placed in preceding group lens barrel before described, and the preceding group lens barrel passes through grinding fit system
In focusing body tube, focusing cam is arranged with outside the focusing body tube, focusing body tube is provided with outside and focusing cam
The motor gear of the focusing motor of engaged transmission, the focusing motor is engaged with the gear of focusing cam.
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| CN201810943186.2A CN108873277B (en) | 2018-08-17 | 2018-08-17 | Compact wide-angle high-zoom-ratio high-definition zoom lens |
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| CN201810943186.2A CN108873277B (en) | 2018-08-17 | 2018-08-17 | Compact wide-angle high-zoom-ratio high-definition zoom lens |
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| CN111650746A (en) * | 2020-05-11 | 2020-09-11 | 中国科学院西安光学精密机械研究所 | Method for improving focusing precision of zoom optical system |
| CN112904542A (en) * | 2021-01-28 | 2021-06-04 | 中国科学院西安光学精密机械研究所 | Low-distortion high-definition continuous zooming optical system |
| CN114047614A (en) * | 2021-12-03 | 2022-02-15 | 中国科学院精密测量科学与技术创新研究院 | Ultraviolet imaging objective lens system with long working distance |
| CN114355589A (en) * | 2021-12-29 | 2022-04-15 | 福建福光股份有限公司 | 31-time miniaturized continuous zoom lens |
| CN115185062A (en) * | 2021-12-20 | 2022-10-14 | 福建福光股份有限公司 | High-pixel compact type large-picture optical lens |
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