CN204360001U - A kind of short focus continuous magnification lens - Google Patents
A kind of short focus continuous magnification lens Download PDFInfo
- Publication number
- CN204360001U CN204360001U CN201420866887.8U CN201420866887U CN204360001U CN 204360001 U CN204360001 U CN 204360001U CN 201420866887 U CN201420866887 U CN 201420866887U CN 204360001 U CN204360001 U CN 204360001U
- Authority
- CN
- China
- Prior art keywords
- lens
- group
- zoom
- mirror
- gummed mirror
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Lenses (AREA)
Abstract
The utility model relates to a kind of short burnt continuous magnification lens.Comprise set gradually from camera lens one end zoom group, in fix group and latter fixing group, zoom group comprises the first lens, the second lens, the 3rd lens that set gradually from camera lens one end; In fix group and compensate organizing residual aberration before zoom group; In fix group and be included in the 4th lens, the first gummed mirror that the 3rd lens rear sets gradually; Rear fixing group to zoom group and in fixing group residual aberration compensate; Rear fixing group is included in the 5th lens, the second gummed mirror that the first gummed mirror rear sets gradually; Also comprise and being arranged between the 3rd lens and the 4th lens for regulating the aperture diaphragm of luminous energy.The utility model provides one and realizes simple, good economy performance, the short burnt continuous magnification lens that image quality is high.
Description
Technical field
The utility model belongs to optical instrument field, relates to a kind of zoom lens, is specifically related to a kind of short focus continuous magnification lens.
Background technology
Short focus zoom lens has a wide range of applications in fields such as commercialization monitoring, digital vedio recording, medical diagnosis, public security investigations.Particularly be applied to current commercialization, civilian monitoring field, except requiring that focal length is short, visual field large, zoom realizes simply, image planes are stable, good imaging quality, also require that compact appearance, number of lenses are few, cheap.
Commercialization conventional at present, the short burnt zoom lens of civilian monitoring, usually needing moving movement curve to be linear zoom group and curve movement in zooming procedure is that nonlinear compensating group (or detector) ensures that image planes are stablized, thus mechanical mechanism and control procedure relative complex, image quality is not easy to ensure, cost is also relatively high.
Utility model content
In order to solve technical matters existing in background technology, the utility model provides a kind of short focus continuous magnification lens.
The technical solution of the utility model is: a kind of short burnt continuous magnification lens, comprise set gradually from camera lens one end zoom group, in fix group and latter fixing group, its special character is: above-mentioned zoom group comprises the first lens, the second lens, the 3rd lens that set gradually from camera lens one end; Fix group in above-mentioned to compensate organizing residual aberration before zoom group; Fix group in above-mentioned and be included in the 4th lens, the first gummed mirror that the 3rd lens rear sets gradually; Above-mentioned rear fixing group to zoom group and in fixing group residual aberration compensate; Above-mentioned rear fixing group of the 5th lens, the second gummed mirror being included in the first gummed mirror rear and setting gradually; Also comprise and being arranged between the 3rd lens and the 4th lens for regulating the aperture diaphragm of luminous energy; Above-mentioned first lens and the second lens are the negative power meniscus lens bending towards image space; Above-mentioned 3rd lens are the positive light coke meniscus lens bending towards object space; Above-mentioned 4th lens and the 5th lens are the positive power lens of biconvex;
Above-mentioned first gummed mirror is concave-concave and the negative power that cemented surface bends towards image space glues together mirror;
Above-mentioned second gummed mirror be bend towards image space and cemented surface bend towards object space positive light coke bent moon gummed mirror;
Above-mentioned aperture diaphragm and the 3rd lens air are spaced apart 4.05mm, and aperture diaphragm and the 4th lens air are spaced apart 0.1mm.
The utility model has the advantages that: the utility model can realize zoom function by the be separated by rectilinear motion of mirror group of one group, foremost, and compact conformation, image planes are stable, and image quality can meet the demands.Have and realize simple, good economy performance, image quality high feature, can meet actual operation requirements.This short focus continuous magnification lens glues together by two negative-power lenses and negative power the zoom group that mirror forms and realizes zoom; Group is fixed, for compensating organizing residual aberration before zoom group in two positive power lens are formed; Glue together rear fixing group that mirror forms by a positive power lens and positive light coke, for zoom group and in fixing group residual aberration compensate, to realize improving image quality object.Zoom group realizes continuous vari-focus by regulating optical interval change.Compared with prior art, the utility model is 3 group of 9 slice structure, and eyeglass face shape is sphere, has good manufacturability, zoom group is done linear movement and is realized zoom, and physical construction realizes simple, and image planes are stablized, visual field is comparatively large, and image quality is better, can meet actual operation requirements.
Accompanying drawing explanation
Fig. 1 is the utility model short coke-like state index path;
Fig. 2 is coke-like state index path in the utility model;
Fig. 3 is the utility model focal length state light path figure;
Fig. 4 is the utility model spatial frequency is 20lp/mm, the MTF curve map of short coke-like state optical system;
Fig. 5 is the utility model spatial frequency is 20lp/mm, the MTF curve map of middle coke-like state optical system;
Fig. 6 is the utility model spatial frequency is 20lp/mm, the MTF curve map of focal length state optical system;
Fig. 7 is the utility model short coke-like state distortion curve figure;
Fig. 8 is coke-like state distortion curve figure in the utility model;
Fig. 9 is the utility model focal length state distortion curve figure;
Wherein: 1-first lens, 2-second lens, 3-the 3rd lens, 4-the 4th lens, 5-first glue together mirror, 6-the 5th lens, 7-second glue together mirror.
Embodiment
See Fig. 1-9, the utility model proposes a kind of short burnt continuous magnification lens, comprise set gradually from camera lens one end zoom group, in fix group and latter fixing group, zoom group comprises the first lens 1, second lens 2, the 3rd lens 3 that set gradually from camera lens one end; In fix group and compensate organizing residual aberration before zoom group; In fix group and be included in the 4th lens 4, first that the 3rd lens 3 rear sets gradually and glue together mirror 5; Rear fixing group to zoom group and in fixing group residual aberration compensate; Rear fixing group is included in the 5th lens 6, the second gummed mirror 7 that the first gummed mirror 5 rear sets gradually; Also comprise and being arranged between the 3rd lens 3 and the 4th lens 4 for regulating the aperture diaphragm of luminous energy; First lens 1 and the second lens 2 are the negative power meniscus lens bending towards image space; 3rd lens 3 are for bending towards the positive light coke meniscus lens of object space; 4th lens 4 and the 5th lens 6 are the positive power lens of biconvex; First gummed mirror 5 is concave-concave and the negative power that cemented surface bends towards image space glues together mirror; Second gummed mirror 7 for bend towards image space and cemented surface bend towards object space positive light coke bent moon gummed mirror; Aperture diaphragm and the 3rd lens 3 airspace are 4.05mm, and aperture diaphragm and the 4th lens 4 airspace are 0.1mm.
Aperture diaphragm is the physical construction that in camera lens, restriction enters camera lens beam size, and its position is relevant to aberration, carrying out only need arranging its position when aberration optimization calculates light path, need not consider concrete structure.
As mentioned above, iris is the aperture diaphragm that aperture can continuously change, and effect according to illumination condition extraneous during work, can continuously change the beam energy incided on detector focal plane, realize the object regulating luminous energy.Here concrete structure need not be considered.
This short focus continuous magnification lens by zoom group, in fix group and latter fixing group form.Zoom group is glued together mirror by the first lens of two negative-power lenses, the second lens and a negative power first and is formed; In fix group and be made up of the 3rd lens of positive power lens and the 4th lens; Rear fixing group is glued together mirror by a positive power lens the 5th and a positive light coke second and is formed; Aperture diaphragm position in the centre of fixing group, be convenient to the placement of iris, conveniently realize light modulation.Described zoom group, in fix the focal-distance tuning range 4.2mm ~ 8mm of group and rear fixing group of construction system, F number is 3, imaging size 6.2mm, system overall length 60mm.Described zoom group realizes continuous vari-focus by regulating optical interval change.
4.2mm ~ 8mm/F3 short focus continuous magnification lens optical system as shown in Figure 1, 2, 3, adopts 3 group of 9 slice structure, comprises gluing together by two negative power first lens, the second lens and negative power first zoom group that mirror forms and realizing zoom; Group is fixed, for compensating organizing residual aberration before zoom group in two positive light cokes the 3rd lens and the 4th lens (sequence number 4) are formed; Glue together rear fixing group that mirror forms by a positive light coke the 5th lens and positive light coke second, for zoom group and in fixing group residual aberration compensate, realize system aberration balance, be finally imaged within the scope of φ 6.2mm.Zoom group realizes continuous vari-focus by diagram interval variation.As shown in Fig. 4,5,6,7,8,9, system is in short Jiao, middle Jiao, focal length situation, MTF curve values when spatial frequency is 20lp/mm and distortion curve figure can find out, have good image quality, full filed distortion is moderate, can meet commercial and civilian monitoring requirement.
Claims (4)
1. a short burnt continuous magnification lens, comprise set gradually from camera lens one end zoom group, in fix group and latter fixing group, it is characterized in that: described zoom group comprises the first lens, the second lens, the 3rd lens that set gradually from camera lens one end; Fix group in described to compensate organizing residual aberration before zoom group; Fix group in described and be included in the 4th lens, the first gummed mirror that the 3rd lens rear sets gradually; Described rear fixing group to zoom group and in fixing group residual aberration compensate; Described rear fixing group of the 5th lens, the second gummed mirror being included in the first gummed mirror rear and setting gradually; Also comprise and being arranged between the 3rd lens and the 4th lens for regulating the aperture diaphragm of luminous energy; Described first lens and the second lens are the negative power meniscus lens bending towards image space; Described 3rd lens are the positive light coke meniscus lens bending towards object space; Described 4th lens and the 5th lens are the positive power lens of biconvex.
2. the short burnt continuous magnification lens of one according to claim 1, is characterized in that: described first gummed mirror is concave-concave and the negative power that cemented surface bends towards image space glues together mirror.
3. the short burnt continuous magnification lens of one according to claim 1 and 2, is characterized in that: described second gummed mirror be bend towards image space and cemented surface bend towards object space positive light coke bent moon gummed mirror.
4. the short burnt continuous magnification lens of one according to claim 3, is characterized in that: described aperture diaphragm and the 3rd lens air are spaced apart 4.05mm, and aperture diaphragm and the 4th lens air are spaced apart 0.1mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420866887.8U CN204360001U (en) | 2014-12-30 | 2014-12-30 | A kind of short focus continuous magnification lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420866887.8U CN204360001U (en) | 2014-12-30 | 2014-12-30 | A kind of short focus continuous magnification lens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204360001U true CN204360001U (en) | 2015-05-27 |
Family
ID=53261463
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420866887.8U Active CN204360001U (en) | 2014-12-30 | 2014-12-30 | A kind of short focus continuous magnification lens |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204360001U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104570304A (en) * | 2014-12-30 | 2015-04-29 | 中国科学院西安光学精密机械研究所 | Short-focus continuous magnification lens |
| CN109387931A (en) * | 2018-11-06 | 2019-02-26 | 中国科学院西安光学精密机械研究所 | A kind of short-wave infrared continuous magnification lens |
-
2014
- 2014-12-30 CN CN201420866887.8U patent/CN204360001U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104570304A (en) * | 2014-12-30 | 2015-04-29 | 中国科学院西安光学精密机械研究所 | Short-focus continuous magnification lens |
| CN109387931A (en) * | 2018-11-06 | 2019-02-26 | 中国科学院西安光学精密机械研究所 | A kind of short-wave infrared continuous magnification lens |
| CN109387931B (en) * | 2018-11-06 | 2023-12-08 | 中国科学院西安光学精密机械研究所 | Short wave infrared continuous zoom lens |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101958899B1 (en) | Small-sized low-cost 4mp non-thermal fixed-focus lens | |
| CN107193114B (en) | Short-focus ultra-wide-angle small fixed focus lens | |
| CN107065153B (en) | Visual lens of wide-angle high-definition machine | |
| CN104199176B (en) | A kind of ultra-large vision field camera lens for monitoring system | |
| CN103217783A (en) | High-definition wide-angle lens | |
| CN107907988B (en) | A kind of double light fusion optical systems | |
| CN103616759B (en) | Optical zoom system of microscope | |
| CN109407281A (en) | A kind of interior optical lens of focusing of monolithic | |
| CN204360001U (en) | A kind of short focus continuous magnification lens | |
| CN109459838B (en) | Wide-angle high-resolution vehicle-mounted optical system and imaging method | |
| CN107632378B (en) | Small-sized large-magnification constant aperture zoom lens | |
| CN104570304A (en) | Short-focus continuous magnification lens | |
| CN105137576A (en) | Zooming imaging lens, imaging module and iris recognition device | |
| CN110850571B (en) | A super large target surface zoom lens in succession for line scanning camera system | |
| CN103064169B (en) | Image shooting lens | |
| CN103235399B (en) | High-pixel macro-focus high-zoom-ratio zooming optical system | |
| CN104991330A (en) | Novel photographic lens | |
| CN102401983B (en) | Optical system with infrared continuous zoom lenses | |
| CN211528802U (en) | High-resolution low-distortion easily-processed optical lens | |
| CN113640941B (en) | Optical lens | |
| CN212933130U (en) | High-pixel digital telescope lens | |
| CN110764238A (en) | Wide-angle low-distortion large-target-surface continuous zoom lens capable of eliminating heat difference | |
| CN105334605A (en) | Zooming lens and image acquisition equipment | |
| CN107247323B (en) | Two-group zoom lens, method of using the same, and imaging apparatus including the same | |
| CN109752820B (en) | High-resolution low-distortion micro-distance industrial lens |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |