CN107121766B - A kind of continuous zooming optical device - Google Patents
A kind of continuous zooming optical device Download PDFInfo
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- CN107121766B CN107121766B CN201710424215.XA CN201710424215A CN107121766B CN 107121766 B CN107121766 B CN 107121766B CN 201710424215 A CN201710424215 A CN 201710424215A CN 107121766 B CN107121766 B CN 107121766B
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- 230000003287 optical effect Effects 0.000 title claims abstract description 73
- 230000005499 meniscus Effects 0.000 claims abstract description 18
- 210000001747 pupil Anatomy 0.000 claims abstract description 12
- 229910052746 lanthanum Inorganic materials 0.000 claims description 18
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 claims description 18
- 239000000203 mixture Substances 0.000 claims description 16
- 239000000571 coke Substances 0.000 claims description 8
- 238000003384 imaging method Methods 0.000 claims description 7
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims description 3
- 230000004075 alteration Effects 0.000 claims description 3
- 229910052788 barium Inorganic materials 0.000 claims description 3
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 claims description 3
- 229910052731 fluorine Inorganic materials 0.000 claims description 3
- 239000011737 fluorine Substances 0.000 claims description 3
- 230000004907 flux Effects 0.000 claims description 2
- 230000008901 benefit Effects 0.000 abstract description 2
- 230000001788 irregular Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 11
- 239000006185 dispersion Substances 0.000 description 10
- 238000000034 method Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000000007 visual effect Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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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 +--
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
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Abstract
The invention discloses a kind of continuous zooming optical devices, including compensation group, zoom group, iris diaphgram group, focusing group, rear fixed group and image planes；The compensation group is moved along the direction optical axis O-O, is made of two pieces of cemented doublets；The zoom group is moved along the direction optical axis O-O, is made of one piece of cemented doublet and a piece of diverging meniscus lens；The iris diaphgram group is moved perpendicular to the direction optical axis O-O；The focusing group is moved along the direction optical axis O-O, is made 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 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, and under conditions of same relative aperture, 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, in particular to a kind of small-bore big light passing amount continuous zooming optical dress
It sets, is suitable under periscope condition, concealment observation is carried out to target.
Background technique
Under periscope condition, in order to observe the target for requiring visual field and operating distance on the water surface, while having good hidden
Property, it is desirable that the part that observation device exposes the surface is small as far as possible, and Fig. 1 show the existing latent structural schematic diagram for hoping 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 guaranteeing Optical devices
Under the premise of, clear aperture and entrance pupil distance are minimized, and clear aperture and entrance pupil distance are related with the position of iris diaphgram,
For iris diaphgram closer to the first face that light enters, the clear aperture and Optical devices entrance pupil distance in the first face are just smaller.
Fig. 2 show a kind of continuous zooming optical device of the prior art, be 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 since iris diaphgram is far from first fixed group
The clear aperture of fixed group increases before causing, entrance pupil lengthening distance, and the Optical devices of the structure are installed on latent prestige observation shown in FIG. 1
When in equipment, the size for directly resulting in protection glass increases, and concealment reduces.
As shown in figure 3, if can reduce clear aperture when iris diaphgram is placed between zoom group and compensation group and enter interpupillary distance
From, but when being installed in latent prestige observation device shown in FIG. 1, the globality of cam is destroyed, the difficulty of processing and adjustment is increased
Degree；
As shown in figure 4, if before iris diaphgram is placed between fixed group and zoom group when, the clear aperture and light in the first face
Learn that device entrance pupil distance is minimum, but the clear aperture of compensation group and rear fixed group increases rapidly, cause Optical devices volume and
Weight increases, and is unfavorable for Miniaturization Design.
Summary of the invention
It is an object of the invention to overcome the problems of the prior art and deficiency, it is continuous to provide a kind of small-bore big light passing amount
Varifocus optical apparatus reduces the volume of Optical devices and enters under the premise of guaranteeing the visual field and operating distance of observed target
Interpupillary distance from.
The technical solution adopted by the present invention to solve the technical problems is: a kind of continuous zooming optical device, including sequence
Compensation group, zoom group, iris diaphgram group, focusing group, rear fixed group and the image planes being installed on optical axis O-O；The compensation
Group is the positive light coke group of the structure in pairs moved along the direction optical axis O-O, is made of two pieces of cemented doublets, and being used for will be parallel
Light at object of the picture as zoom group, and undertake the function of stable image planes；The zoom group is to move along the direction optical axis O-O
Double single structures negative power group, be made 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；The iris diaphgram group is moved perpendicular to the direction optical axis O-O, for changing light
System light throughput is learned, the clear aperture and entrance pupil distance of compensation group are reduced；The focusing group is to move along the direction optical axis O-O
Only double structure positive light coke group, be made of two pieces of biconvex lens and one piece of cemented doublet, for undertaking focusing task,
Enable optical system focal length position to the target blur-free imaging of 20m~∞, short focus position can target to 3m~∞ it is clear
Imaging；The 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
It is constituted with two pieces of cemented doublets, for compensating the aberration of compensation group, zoom group and focusing group.
A kind of continuous zooming optical device, compensation group relative aperture D/f are 1/1.9, from front to back successively are as follows:
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 continuous zooming optical device, zoom group is from front to back successively are as follows: a piece of dense flint biconvex lens
With the cemented doublet of a piece of lanthanum crown biconcave lens composition, a piece of dense barium flint diverging meniscus lens.
A kind of continuous zooming optical device, iris diaphgram group is between zoom group and focusing group and close to change
The one of group one end fixed position again.
A kind of continuous zooming optical device, focusing group relative aperture D/f are 1/2.1, from front to back successively are as follows:
Two panels fluorine crown biconvex lens, the cemented doublet of a piece of light crown biconvex lens and a piece of lanthanum flint biconcave lens composition.
A kind of continuous zooming optical device fixes thereafter group from front to back successively are as follows: 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 negative bent moon of lanthanum flint
The cemented doublet of lens and a piece of light flint biconvex lens composition.
The beneficial effects of the present invention are: using compensation group+zoom group+focusing group+rear fixed group structure type, it can darkening
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 the prior art of the compensation group of one end
Reduce 30%, the clear aperture of remaining constituent element is held essentially constant, and entrance pupil distance reduces 25.7%.
Detailed description of the invention
Fig. 1 is the existing latent structural schematic diagram for hoping equipment；
Fig. 2 is a kind of existing structural schematic diagram of continuous zooming optical device；
Fig. 3 is that existing Optical devices diaphragm is in the structural schematic diagram between zoom group and compensation group；
Fig. 4 is that existing Optical devices diaphragm is in the preceding fixed group of structural schematic diagram between 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 appended drawing reference are as follows: 1-compensation group, 2-zoom groups, 3-iris diaphgrams, 4-focusing groups, 5-fix group afterwards,
6-image planes.
Specific embodiment
Present invention will be further described below with reference to the accompanying drawings and specific embodiments.
Embodiment 1
As shown in Figures 5 to 7, a basic implementation of a kind of small-bore big light passing amount continuous zooming optical device of the present invention
Example, it includes being installed on upper optical system overall length during continuously changing focal length of same optical axis O-O to change correspondingly, image planes 6
Remain unchanged three of distance move along optical axis direction, one moved on perpendicular to optical axis direction, one be fixed on optical axis
Five components: 1 one end of compensation group that five microscope groups are entered using light as front end, 6 one end of image planes be rear end, from front to back
It is arranged successively are as follows: compensation group 1, zoom group 2, iris diaphgram group 3, focusing group 4 and rear fixed group 5.
The compensation group 1 is the positive light coke group of structure in pairs, for by directional light at picture as zoom group 2
Object, and the function of stable image planes 6 is undertaken, it is made of two pieces of cemented doublets；The zoom group 2 is the negative light focus of double single structures
Degree group realizes the consecutive variations of focal length for changing the total focal length (i.e. multiplying power) of optical system, by one piece of cemented doublet and one
Piece diverging meniscus lens is constituted；The iris diaphgram group 3 reduces the light admission port of compensation group 1 for changing optical system luminous flux
Diameter and entrance pupil distance；The focusing group 4 is that the positive light coke group of only double structure makes optical system for undertaking focusing task
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 of two pieces of biconvex lens and one piece of cemented doublet, and the rear fixed group 5 is the positive light focus of single structure in pairs
Degree group is made of for compensating the aberration of first three groups a piece of biconvex lens and two pieces of cemented doublets, is continuously changing focal length
The optical system overall length of this Optical devices changes correspondingly in the process, and 6 distance of image planes remains unchanged；The iris diaphgram group 3
A fixed position between zoom group 2 and focusing group 4 and close to 2 one end of zoom group, clear aperture are variable.
The design value of this Optical devices transmission function are as follows:
Table 1 is specific implementation example transmission function design value
Optical devices of the present invention are in the target imaging to 3m~∞ range, without focusing, in the continuous of 17mm~138mm
In zooming procedure, image is whole clear；The overall length of optical system is variable in zooming procedure, under conditions of same relative aperture,
The clear aperture Optical devices more constant than overall length reduce 30%, and entrance pupil distance reduces 25.7%, and zoom curve is regular curve, compensation
Curve is the irregular curve of parabolic shape.
Embodiment 2
It is further technical solution on the basis of embodiment 1.
The 1 relative aperture D/f of compensation group is 1/1.9, from front to back successively are as follows: a piece of medium dispersion of high refractive index
The cemented doublet of lanthanum flint positive meniscus lens and the light crown biconvex lens composition of a piece of low dispersion low-refraction, a piece of low dispersion are 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 refractive index form.
The zoom group 2 is from front to back successively are as follows: a piece of high dispersion dense flint biconvex lens of high refractive index and it is a piece of in
Etc. refractive index low dispersion lanthanum crown biconcave lens composition cemented doublet, a piece of low dispersion dense barium flint diverging meniscus lens.
A fixed position of the iris diaphgram group 3 between zoom group 2 and focusing group 4, clear aperture are variable.
The 4 relative aperture D/f of focusing group is 1/2.1, from front to back successively are as follows: the low dispersion fluorine crown of two panels low-refraction
Biconvex lens, double glue of a piece of low light crown biconvex lens of dispersion of low-refraction and a piece of high refractive index lanthanum flint biconcave lens composition
Close lens.
The rear fixation organizes 5 from front to back successively are as follows: a piece of high refractive index lanthanum flint biconvex lens, a piece of high refractive index
The cemented doublet of the light crown positive meniscus lens composition of lanthanum flint diverging meniscus lens dispersion low with a piece of low-refraction, 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 light passing amount continuous vari-focus
Optical devices are in conjunction with the embodiments further described below remarkable result of the invention:
Data corresponding diagram 5, Fig. 6 and Fig. 7 that following table 2, table 3 provide are one and are applied to the small-bore big of latent prestige equipment
Light passing amount continuous zooming optical device, the clear aperture Optical devices more constant than overall length reduce 30%, and entrance pupil distance reduces
25.7%。
Table 3 is the variable interval value of the optical system, the short focus position in the numerical value corresponding diagram 5 of short focus, wherein burnt
Middle burnt position in numerical value corresponding diagram 6, the focal length position in the numerical value corresponding diagram 7 of focal length.
Table 2 is the structure of optical means parameter list that example is embodied
Table 3 is variable interval
The cam curve movement of compensation group 1 is parabolic shape (as shown in Figure 8), and beginning and end is located at the same of cam
End, the device focal length are 17mm~138mm continuous vari-focus, and relative aperture is 1:3~1:4.5, and the clear aperture of maximum lens is
33.4mm is adapted to image planes having a size of 1/3 inch CCD.
The claims in the present invention protection scope is not limited to the above embodiments.
Claims (6)
1. a kind of continuous zooming optical device, it is characterised in that: including be sequentially installed on optical axis (O-O) compensation group (1),
Zoom group (2), focusing group (4), fixes group (5) and image planes (6) at iris diaphgram group (3) afterwards；
The compensation group (1) is the positive light coke group of the structure in pairs moved along the optical axis direction (O-O), double glued by two pieces
Lens are constituted, for by directional light at object of the picture as zoom group (2), and undertake the function of stable image planes (6)；
The zoom group (2) is the negative power group of the double single structures moved along the optical axis direction (O-O), double glued by one piece
Lens and a piece of diverging meniscus lens are constituted, and for changing the total focal length of optical system, realize the consecutive variations of focal length；
The iris diaphgram group (3) is moved perpendicular to the optical axis direction (O-O), for changing optical system luminous flux, is reduced and is mended
Repay the clear aperture and entrance pupil distance of group (1)；
The focusing group (4) is the positive light coke group of the only double structure moved along the optical axis direction (O-O), by two pieces of biconvexs
Lens and one piece of cemented doublet are constituted, and for undertaking focusing task, enable mesh of the optical system in focal length position to 20m~∞
Mark blur-free imaging, can be to 3 m~∞ target blur-free imaging in short focus position；
Described rear fixed group (5) are the positive light coke group of the list that is fixed on optical axis (O-O) structure in pairs, by a piece of biconvex
Lens and two pieces of cemented doublets are constituted, for compensating the aberration of compensation group (1), zoom group (2) and focusing group (4).
2. a kind of continuous zooming optical device according to claim 1, which is characterized in that the compensation group (1) is opposite
Aperture D/f is 1/1.9, from front to back successively are as follows: pair of a piece of lanthanum flint positive meniscus lens and a piece of light crown biconvex lens composition
Balsaming lens, the cemented doublet of a piece of light crown biconvex lens and a piece of dense flint biconcave lens composition.
3. a kind of continuous zooming optical device according to claim 1, which is characterized in that the zoom group (2) is in the past
Successively after are as follows: the cemented doublet of a piece of dense flint biconvex lens and a piece of lanthanum crown biconcave lens composition, a piece of dense barium flint
Diverging meniscus lens.
4. a kind of continuous zooming optical device according to claim 1, which is characterized in that the iris diaphgram group (3)
A fixed position between zoom group (2) and focusing group (4) and close to zoom group (2) one end.
5. a kind of continuous zooming optical device according to claim 1, which is characterized in that the focusing group (4) is opposite
Aperture D/f is 1/2.1, from front to back successively are as follows: two panels fluorine crown biconvex lens, a piece of light crown biconvex lens and a piece of lanthanum flint are double
The cemented doublet of concavees lens composition.
6. a kind of continuous zooming optical device according to claim 1, which is characterized in that rear fixed group (5) from
Front to back successively are as follows: a piece of lanthanum flint biconvex lens, a piece of lanthanum flint diverging meniscus lens and a piece of light crown positive meniscus lens form
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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| CN201710424215.XA CN107121766B (en) | 2017-06-07 | 2017-06-07 | A kind of continuous zooming optical device |
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| CN107121766A CN107121766A (en) | 2017-09-01 |
| CN107121766B true CN107121766B (en) | 2019-07-26 |
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| CN108445613B (en) * | 2018-05-21 | 2024-05-10 | 西安微普光电技术有限公司 | Broadband three-component continuous zooming optical system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8068281B2 (en) * | 2008-04-02 | 2011-11-29 | Panasonic Corporation | Zoom lens system, interchangeable lens apparatus and camera 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 (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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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 JIUZHIYANG INFORMATION TECHNOLOGY CO.,LTD. Address before: 430223, No. 9, Ming Ze street, temple Development Zone, Jiangxia District, Hubei, Wuhan Patentee before: JIUZHIYANG INFRARED SYSTEM Co.,Ltd. |
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Address after: 430000 No. 2, floors 1-3, building A2, phase I, R & D base, science and Technology Park, Donghu New Technology Development Zone, Wuhan, Hubei Province Patentee after: China Shipbuilding Hongyang Technology (Wuhan) Co.,Ltd. Country or region after: China Address before: 430000 No. 2, floors 1-3, building A2, phase I, R & D base, science and Technology Park, Donghu New Technology Development Zone, Wuhan, Hubei Province Patentee before: HUBEI JIUZHIYANG INFORMATION TECHNOLOGY CO.,LTD. Country or region before: China |