CN107121766A - A kind of continuous zooming optical device - Google Patents
A kind of continuous zooming optical device Download PDFInfo
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- CN107121766A CN107121766A CN201710424215.XA CN201710424215A CN107121766A CN 107121766 A CN107121766 A CN 107121766A CN 201710424215 A CN201710424215 A CN 201710424215A CN 107121766 A CN107121766 A CN 107121766A
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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
- G02B15/17—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 +--
Abstract
The invention discloses a kind of continuous zooming optical device, including compensation group, zoom group, iris diaphgram group, focusing group, rear fixed group and image planes；Described compensation group is moved along optical axis O-O directions, is made up of two pieces of cemented doublets；Described zoom group is moved along optical axis O-O directions, is made up of one piece of cemented doublet and a piece of diverging meniscus lens；Described iris diaphgram group is perpendicular to optical axis O-O directions motion；Described focusing group is moved along optical axis O-O directions, is made up of two pieces of biconvex lens and one piece of cemented doublet；Described latter fixed group is fixed on optical axis O-O, is made up of a piece of biconvex lens and two pieces of cemented doublets.It is an advantage of the invention that overall length is variable, compensated curve is the irregular curve of parabolic shape, under conditions of equal relative aperture, and the clear aperture Optical devices more constant than overall length reduce 30%, and entrance pupil distance reduces 25.7%.
Description
Technical field
The invention belongs to technical field of optical, more particularly to a kind of small-bore big thang-kng amount continuous zooming optical dress
Put, it is adaptable under periscope condition, disguised observation is carried out to target.
Background technology
Under periscope condition, in order to observe the target that visual field and operating distance are required on the water surface, while having well hidden
Property, it is desirable to the part that facilities for observation surfaces is as far as possible small, and Fig. 1 show the structural representation of existing latent prestige equipment, that is, works as guarantor
The size for protecting glass is certain, to meet the requirement of visual field and operating distance, it is necessary to constant in the relative aperture for ensureing Optical devices
On the premise of, reduce clear aperture and entrance pupil distance as far as possible, and clear aperture and entrance pupil distance are relevant with the position of iris diaphgram,
The first face that iris diaphgram enters closer to light, clear aperture and Optical devices the entrance pupil distance in the first face is just smaller.
Fig. 2 show a kind of continuous zooming optical device of prior art, its for preceding fixed group+zoom group+compensation group+after
The structure type of fixed group, first fixed group undertakes focusing task, and zoom group and compensation group realize zoom and stablize image planes, can darkening
Door screen is placed between compensation group and rear fixed group, at rear fixed group.This device is led because iris diaphgram is away from preceding fixed group
The clear aperture increase of fixed group before causing, entrance pupil lengthening distance, the Optical devices of the structure are installed on the latent prestige observation shown in Fig. 1
When in equipment, the size increase of protective glass, disguise reduction are directly resulted in.
If as shown in figure 3, when iris diaphgram is placed between zoom group and compensation group, clear aperture can be reduced and enter interpupillary distance
From, but when being installed in the latent prestige facilities for observation shown in Fig. 1, the globality of cam is destroyed, add processing and the difficulty debug；
If as shown in figure 4, when fixing before iris diaphgram is placed between group and zoom group, the clear aperture and optics in the first face are filled
Insert interpupillary distance from minimum, but the clear aperture of compensation group and rear fixed group to increase rapidly, cause the volume and weight of Optical devices
Increase, is unfavorable for Miniaturization Design.
The content of the invention
It is an object of the invention to overcome the problems of the prior art and deficiency, there is provided the small-bore big thang-kng amount of one kind is continuous
Varifocus optical apparatus, on the premise of the visual field of observed target and operating distance is ensured, reduces the volume of Optical devices and enters
Interpupillary distance from.
The technical solution adopted for the present invention to solve the technical problems is：A kind of continuous zooming optical device, including order
It is installed on compensation group, zoom group, iris diaphgram group, focusing group, rear fixed group and image planes on optical axis O-O；Described compensation
Group is the positive light coke group of the structure in pairs along optical axis O-O directions motion, is made up of two pieces of cemented doublets, for will be parallel
Light into picture as the thing of zoom group, and undertake the function of stable image planes；Described zoom group is to be moved along optical axis O-O directions
Double single structures negative power group, be made up of one piece of cemented doublet and a piece of diverging meniscus lens, for changing optical system
Total focal length, realize the consecutive variations of focal length；Described iris diaphgram group is perpendicular to optical axis O-O directions motion, for changing light
System light throughput is learned, reduces the clear aperture and entrance pupil distance of compensation group；Described focusing group is to be moved along optical axis O-O directions
Only double structure positive light coke group, be made up of two pieces of biconvex lens and one piece of cemented doublet, for undertaking focusing task,
Enable optical system focal length position to 20m~∞ target blur-free imaging, can be clear to 3m~∞ target in short focus position
Imaging；Described rear fixed group for the list that is fixed on optical axis O-O structure in pairs positive light coke group, by a piece of biconvex lens
Constituted with two pieces of cemented doublets, the aberration for compensation group, zoom group and focusing group.
A kind of described continuous zooming optical device, its compensation group relative aperture D/f is 1/1.9, is followed successively by from front to back：
The cemented doublet of a piece of lanthanum flint positive meniscus lens and a piece of light crown biconvex lens composition, a piece of light crown biconvex lens with it is a piece of
The cemented doublet of dense flint biconcave lens composition.
A kind of described continuous zooming optical device, its zoom group is followed successively by from front to back：A piece of dense flint biconvex lens
The cemented doublet constituted with a piece of lanthanum crown biconcave lens, a piece of dense barium flint diverging meniscus lens.
A kind of described continuous zooming optical device, its iris diaphgram group is located between zoom group and focusing group and close to change
A fixed position of one end is organized again.
A kind of described continuous zooming optical device, its focusing group relative aperture D/f is 1/2.1, is followed successively by from front to back：
Two panels fluorine crown biconvex lens, the cemented doublet that a piece of light crown biconvex lens is constituted with a piece of lanthanum flint biconcave lens.
A kind of described continuous zooming optical device, fixed thereafter group is followed successively by from front to back：A piece of lanthanum flint lenticular
Mirror, the cemented doublet of a piece of lanthanum flint diverging meniscus lens and a piece of light crown positive meniscus lens composition, a piece of lanthanum flint bears bent moon
The cemented doublet of lens and a piece of light flint biconvex lens composition.
The beneficial effects of the invention are as follows：, can darkening using the structure type of compensation group+zoom group+focusing group+rear fixed group
Door screen is placed between zoom group and focusing group, and at zoom group, optical system overall length changes with the change of focal length, and advantage exists
In：In the case where relative aperture is constant, light enters Optical devices of the clear aperture than prior art of the compensation group of one end
Reduce 30%, the clear aperture of remaining constituent element is held essentially constant, entrance pupil distance reduces 25.7%.
Brief description of the drawings
Fig. 1 is the structural representation of existing latent prestige equipment；
Fig. 2 is a kind of existing structural representation of continuous zooming optical device；
Fig. 3 is the structural representation that existing Optical devices diaphragm is between zoom group and compensation group；
Fig. 4 is the structural representation that existing Optical devices diaphragm is between preceding fixed group and zoom group；
Fig. 5-7 be Optical devices of the present invention it is short/in/focal length schematic diagram, wherein d1、d2、d3For variable interval；
Fig. 8 is compensated curve schematic diagram of the present invention.
Each reference is：1-compensation group, 2-zoom group, 3-iris diaphgram, 4-focusing group, 5-group is fixed afterwards,
6-image planes.
Embodiment
The invention will be further described with reference to the accompanying drawings and detailed description.
Embodiment 1
As shown in Figures 5 to 7, an a kind of basic embodiment of small-bore big thang-kng amount continuous zooming optical device of the present invention,
It includes being installed on the upper optical system overall lengths during continuous change focal length of same optical axis O-O changes therewith, image planes 6 away from
From being kept for constant three moved along optical axis direction, one being moved on optical axis direction, one be fixed on optical axis
Five components：Front end is in one end of compensation group 1 that five described microscope groups are entered using light, and the one end of image planes 6 is rear end, from front to back according to
It is secondary to be arranged as：Compensation group 1, zoom group 2, iris diaphgram group 3, focusing group 4 and rear fixed group 5.
Described compensation group 1 for structure in pairs positive light coke group, for using directional light into as being used as zoom group 2
Thing, and the function of stable image planes 6 is undertaken, it is made up of two pieces of cemented doublets；Described zoom group 2 is the negative light focus of double single structures
Degree group, the total focal length for changing optical system（That is multiplying power）, the consecutive variations of focal length are realized, by one piece of cemented doublet and one
Piece diverging meniscus lens is constituted；Described iris diaphgram group 3 is used to change optical system luminous flux, reduces the light admission port of compensation group 1
Footpath and entrance pupil distance；Described focusing group 4 is the positive light coke group of only double structure, for undertaking focusing task, makes optical system
Unite focal length position can to 20 meters to infinity of target blur-free imaging, can be clear to 3 meters to infinity of target in short focus position
Clear imaging, is made up of two pieces of biconvex lens and one piece of cemented doublet, and described rear fixed group 5 is the positive light focus of single structure in pairs
Degree group, the aberration for compensating first three groups is made up of a piece of biconvex lens and two pieces of cemented doublets, is continuously changing focal length
During the optical system overall length of this Optical devices change therewith, image planes 6 are apart from keeping constant；Described iris diaphgram group 3
Between zoom group 2 and focusing group 4 and close to a fixed position of the one end of zoom group 2, clear aperture is variable.
The design load of this Optical devices transmission function is：
Table 1 is specific implementation example transmission function design load
Optical devices of the present invention are when to the target imagings of 3m~∞ scopes, without focusing, in 17mm~138mm continuous vari-focus
During, image is whole clear；The overall length of optical system is variable in zooming procedure, under conditions of equal relative aperture, thang-kng
The constant Optical devices of relative aperture overall length reduce 30%, and entrance pupil distance reduces 25.7%, and zoom curve is regular curve, compensated curve
For the irregular curve of parabolic shape.
Embodiment 2
It is the further technical scheme on the basis of embodiment 1.
The described relative aperture D/f of compensation group 1 is 1/1.9, is followed successively by from front to back：The a piece of medium dispersion of high index of refraction
The cemented doublet of lanthanum flint positive meniscus lens and a piece of low light crown biconvex lens composition of dispersion low-refraction, a piece of low dispersion is low
The cemented doublet that the light crown biconvex lens of refractive index and the dense flint biconcave lens of the high dispersion of a piece of high index of refraction are constituted.
Described zoom group 2 is followed successively by from front to back：The a piece of high dispersion dense flint biconvex lens of high index of refraction with it is a piece of in
Etc. the cemented doublet of the low dispersion lanthanum crown biconcave lens composition of refractive index, a piece of low dispersion dense barium flint diverging meniscus lens.
Described iris diaphgram group 3 is located at the fixed position between zoom group 2 and focusing group 4, and clear aperture is variable.
The described relative aperture D/f of focusing group 4 is 1/2.1, is followed successively by from front to back：The low dispersion fluorine crown of two panels low-refraction is double
Convex lens, the cemented doublet that a piece of light crown biconvex lens of the low dispersion of low-refraction is constituted with a piece of high index of refraction lanthanum flint biconcave lens.
Described rear fixed group 5 is followed successively by from front to back：A piece of high index of refraction lanthanum flint biconvex lens, a piece of high index of refraction
The cemented doublet of lanthanum flint diverging meniscus lens and the low dispersion of a piece of low-refraction light crown positive meniscus lens composition, a piece of high refraction
The cemented doublet of rate lanthanum flint diverging meniscus lens and the light flint biconvex lens composition of a piece of low-refraction.
On the basis of basic embodiment 1, the present invention can be designed that a series of small-bore big thang-kng amount continuous vari-focus
Optical devices, are further described below to the remarkable result of the present invention in conjunction with the embodiments：
Data corresponding diagram 5, Fig. 6 and Fig. 7 that table 2 below, table 3 are provided, are a small-bore big thang-kngs for being applied to latent prestige equipment
Continuous zooming optical device is measured, its clear aperture Optical devices more constant than overall length reduce 30%, and entrance pupil distance reduces 25.7%.
Table 3 is the short focus position in the variable interval value of the optical system, the numerical value corresponding diagram 5 of its short focus, wherein burnt
Focal length position in middle burnt position in numerical value corresponding diagram 6, the numerical value corresponding diagram 7 of its focal length.
Table 2 is the structure of optical means parameter list of specific implementation example
Table 3 is variable interval
The cam curve movement of compensation group 1 is parabolic shape（As shown in Figure 8）, beginning and end, should positioned at same one end of cam
Device focal length is 17mm~138mm continuous vari-focus, and relative aperture is 1：3~1：4.5, the clear aperture of maximum lens is
33.4mm, adaptation image planes size is 1/3 inch CCD.
The claims in the present invention protection domain is not limited to above-described embodiment.
Claims (6)
1. a kind of continuous zooming optical device, it is characterised in that：The compensation group on optical axis O-O is installed on including order（1）, become
Times group（2）, iris diaphgram group（3）, focusing group（4）, afterwards fix group（5）And image planes（6）；
Described compensation group（1）For along the positive light coke group of the structure in pairs of optical axis O-O directions motion, by two pieces it is double it is glued thoroughly
Mirror constitute, for using directional light into picture be used as zoom group（2）Thing, and undertake stable image planes（6）Function；
Described zoom group（2）It is double glued saturating by one piece for along the negative power group of double single structures of optical axis O-O directions motion
Mirror and a piece of diverging meniscus lens are constituted, and the total focal length for changing optical system realizes the consecutive variations of focal length；
Described iris diaphgram group（3）Perpendicular to optical axis O-O directions motion, for changing optical system luminous flux, reduce compensation
Group（1）Clear aperture and entrance pupil distance；
Described focusing group（4）For along the positive light coke group of the only double structure of optical axis O-O directions motion, by two pieces of lenticulars
Mirror and one piece of cemented doublet are constituted, and for undertaking focusing task, enable optical system in target of the focal length position to 20m~∞
Blur-free imaging, can be to 3 m~∞ target blur-free imaging in short focus position；
Described latter fixed group（5）For the positive light coke group of the list that is fixed on optical axis O-O structure in pairs, by a piece of lenticular
Mirror and two pieces of cemented doublets are constituted, for compensation group（1）, zoom group（2）With focusing group（4）Aberration.
2. a kind of continuous zooming optical device according to claim 1, it is characterised in that described compensation group（1）Relatively
Aperture D/f is 1/1.9, is followed successively by from front to back：A piece of lanthanum flint positive meniscus lens is double with a piece of light crown biconvex lens composition
Balsaming lens, the cemented doublet that a piece of light crown biconvex lens is constituted with a piece of dense flint biconcave lens.
3. a kind of continuous zooming optical device according to claim 1, it is characterised in that described zoom group（2）In the past
It is followed successively by after：The cemented doublet that a piece of dense flint biconvex lens is constituted with a piece of lanthanum crown biconcave lens, a piece of dense barium flint
Diverging meniscus lens.
4. a kind of continuous zooming optical device according to claim 1, it is characterised in that described iris diaphgram group（3）
Positioned at zoom group（2）With focusing group（4）Between and close to zoom group（2）One fixed position of one end.
5. a kind of continuous zooming optical device according to claim 1, it is characterised in that described focusing group（4）Relatively
Aperture D/f is 1/2.1, is followed successively by from front to back：Two panels fluorine crown biconvex lens, a piece of light crown biconvex lens is double with a piece of lanthanum flint
The cemented doublet of concavees lens composition.
6. a kind of continuous zooming optical device according to claim 1, it is characterised in that described latter fixed group（5）From
A-P is followed successively by：A piece of lanthanum flint biconvex lens, a piece of lanthanum flint diverging meniscus lens is constituted with a piece of light crown positive meniscus lens
Cemented doublet, the cemented doublet of a piece of lanthanum flint diverging meniscus lens and a piece of light flint biconvex lens composition.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710424215.XA CN107121766B (en) | 2017-06-07 | 2017-06-07 | A kind of continuous zooming optical device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710424215.XA CN107121766B (en) | 2017-06-07 | 2017-06-07 | A kind of continuous zooming optical device |
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| CN107121766A true CN107121766A (en) | 2017-09-01 |
| CN107121766B CN107121766B (en) | 2019-07-26 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108445613A (en) * | 2018-05-21 | 2018-08-24 | 西安微普光电技术有限公司 | A kind of three constituent element continuous zooming optical system of broadband |
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| US20090251781A1 (en) * | 2008-04-02 | 2009-10-08 | Panasonic Corporation | Zoom lens system, interchangeable lens apparatus and camera system |
| CN201820029U (en) * | 2010-08-25 | 2011-05-04 | 福建福光数码科技有限公司 | High-resolution zoom camera lens with strong fog penetration function |
| CN103197406A (en) * | 2012-11-25 | 2013-07-10 | 西南技术物理研究所 | Optical compensation continuous zooming passive athermalization optical system |
| JP2016161879A (en) * | 2015-03-04 | 2016-09-05 | 三星電子株式会社Ｓａｍｓｕｎｇ Ｅｌｅｃｔｒｏｎｉｃｓ Ｃｏ．，Ｌｔｄ． | Zoom lens and imaging apparatus |
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2017
- 2017-06-07 CN CN201710424215.XA patent/CN107121766B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090251781A1 (en) * | 2008-04-02 | 2009-10-08 | Panasonic Corporation | Zoom lens system, interchangeable lens apparatus and camera system |
| CN201820029U (en) * | 2010-08-25 | 2011-05-04 | 福建福光数码科技有限公司 | High-resolution zoom camera lens with strong fog penetration function |
| CN103197406A (en) * | 2012-11-25 | 2013-07-10 | 西南技术物理研究所 | Optical compensation continuous zooming passive athermalization optical system |
| JP2016161879A (en) * | 2015-03-04 | 2016-09-05 | 三星電子株式会社Ｓａｍｓｕｎｇ Ｅｌｅｃｔｒｏｎｉｃｓ Ｃｏ．，Ｌｔｄ． | Zoom lens and imaging apparatus |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108445613A (en) * | 2018-05-21 | 2018-08-24 | 西安微普光电技术有限公司 | A kind of three constituent element continuous zooming optical system of broadband |
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| CN107121766B (en) | 2019-07-26 |
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Effective date of registration: 20200210 Address after: 430000, Hubei, East Lake, Wuhan New Technology Development Zone, science and Technology Park, R & D base, two, a bid section No., building 1-3, No. 2 Patentee after: Hubei long ocean Mdt InfoTech Ltd Address before: 430223, No. 9, Ming Ze street, temple Development Zone, Jiangxia District, Hubei, Wuhan Patentee before: Jiuzhiyang Infrared System Co., Ltd. |