CN103809274A - Teleconverter for wide-angle high-magnification zoom lens - Google Patents
Teleconverter for wide-angle high-magnification zoom lens Download PDFInfo
- Publication number
- CN103809274A CN103809274A CN201410072922.3A CN201410072922A CN103809274A CN 103809274 A CN103809274 A CN 103809274A CN 201410072922 A CN201410072922 A CN 201410072922A CN 103809274 A CN103809274 A CN 103809274A
- Authority
- CN
- China
- Prior art keywords
- lens
- group
- wide
- teleconverter
- angle
- 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.)
- Granted
Links
Images
Abstract
The invention relates to a teleconverter for an wide-angle high-magnification zoom lens, wherein a front group A with a negative focal power and a rear group B with a positive focal power are sequentially arranged in the optical system of the teleconverter along the left-to-right incident direction of a light ray; the front lens group A is sequentially provided with a negative meniscus lens A-1 and a biconcave lens A-2, and the lens rear group B is a glued group formed by airtightly connecting a negative meniscus lens B-1 with a biconvex lens B-2; the mechanical structure of the teleconverter comprises a lens cone, a front group installation seat and a rear group installation seat are opened in the lens cone, the front lens group A is placed on the front group installation seat and tightly pressed by a front press ring, the rear lens group B is placed on the rear group installation seat and tightly pressed by a front press ring, and an AB space ring is arranged between the biconcave lens A-2 and the negative meniscus lens B-1. The teleconverter has the advantages of being high in zoom ratio, large in wide angle, high in adaptivity and the like, as well as is beneficial to expansion for the view field angle of the wide-angle zoom lens, and is good in imaging effect in the high-magnification zoom process of the zoom lens.
Description
Technical field
The present invention relates to a kind of video camera lens device, particularly a kind of wide-angle high-power zoom lens increases times mirror, belongs to field of photoelectric technology.
Background technology
The fast development of science and technology, the raising gradually of people's awareness of safety, promoting the continuous progress in security protection market.Now along with advanced technology of video compressing encoding is constantly ripe, the application of the develop rapidly of IP-based Internet Transmission and Digital Zoom technology, has released high-definition cameras a series of 3,000,000, five mega pixels on market.But in the process of Internet Transmission and Digital Zoom, the sharpness (being resolution) of video has decline to a certain degree, but meanwhile people are more and more higher to the requirement of image analytic degree, require also increasing to the field angle that can observe, the requirement of zoom ratio is also higher, therefore just existing camera lens is installed additional and increases times mirror, so that camera lens reaches client's higher requirement.
In traditional camera, digital camera or application television camera system, increase a times mirror and be widely used.The increasing of existing structure pattern times mirror only can with determine focal length lens or low power zoom lens adapted, and can be adaptive the field angle of camera lens all smaller, after its increases and expands, the field angle of imaging system also cannot reach the level of wide-angle.
Summary of the invention
In order to overcome the deficiencies in the prior art, the object of this invention is to provide a kind of and increasing times mirror wide-angle high-power zoom lens adaptation, this increasing times mirror is not only conducive to expand the field angle of wide-angle high-power zoom lens, and imaging effect is good in the high power zoom process of zoom lens.
To achieve these goals, technical scheme of the present invention is: a kind of wide-angle high-power zoom lens increases times mirror, in the optical system of described increasing times mirror along light from left to right incident direction to be disposed with focal power be that front lens set A and the focal power of bearing is positive rear lens set B, described front lens set A is disposed with negative selenodont lens A-1 and double concave type lens A-2, and described rear lens set B is the gummed group of being connected airtight by negative selenodont lens B-1 and lenticular lens B-2; The physical construction of described increasing times mirror comprises lens barrel, in described lens barrel, offer front group of mount pad and rear group of mount pad, on described front group of mount pad, place negative selenodont lens A-1 and double concave type lens A-2 and compressed by front trim ring, on described rear group of mount pad, place negative selenodont lens B-1 and lenticular lens B-2 and compressed by rear trim ring, between described double concave type lens A-2 and negative selenodont lens B-1, being provided with AB spacer ring.
Further, the airspace between described front lens set A and rear lens set B is 7.2462mm.
Further, the airspace between negative selenodont lens A-1 and the double concave type lens A-2 in described front lens set A is 5.5978mm.
Compared with prior art, the present invention has following beneficial effect:
(1) in its optical system reasonable distribution the focal power of front lens set and rear lens set.In rear lens set, cemented doublet group makes camera lens reach object lens of large relative aperture, wide-angle, the short performance index of structure length.And this camera lens has zoom procedural image sharpness and do not decline, image do not cut, undistorted, and imaging effect is good, has had certain novelty with respect to common lens in the past on light path system.
(2) can, by the optical glass material of four two groups of forward and backward two lens set of reasonable selection, select the optical glass material of high index of refraction, low dispersion as far as possible.By area of computer aided optical design and optimization, proofreaied and correct the various aberrations of optical lens perfectly, make the mtf value resolution of camera lens high, can adapt to the requirement of mega pixel high definition video shooting.
(3) in the time of structural design, both guaranteed camera lens concentricity, precision and axial location accurately, make again the compact conformation, attractive in appearance of camera lens as far as possible.Consider again the practicality of camera lens, avoided the limit of camera lens to use.Design different spacer rings and trim ring simultaneously and fixed eyeglass, guaranteed the airspace between eyeglass, thereby reached the high picture element of camera lens, large wide-angle.
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
Accompanying drawing explanation
Fig. 1 is the optical system schematic diagram of the embodiment of the present invention.
Fig. 2 is the physical construction schematic diagram of the embodiment of the present invention.
In figure: 1-lens barrel, trim ring before 2-, 3-AB spacer ring, trim ring after 4-; Lens set before A-, A-1-bears selenodont lens, A-2-double concave type lens, lens set after B-, B-1-bears selenodont lens, B-2-lenticular lens.
Embodiment
As shown in Figure 1 and 2, a kind of wide-angle high-power zoom lens increases times mirror, in the optical system of described increasing times mirror along light from left to right incident direction to be disposed with focal power be that front lens set A and the focal power of bearing is positive rear lens set B, described front lens set A is disposed with negative selenodont lens A-1 and double concave type lens A-2, and described rear lens set B is the gummed group of being connected airtight by negative selenodont lens B-1 and lenticular lens B-2; The physical construction of described increasing times mirror comprises lens barrel 1, in described lens barrel 1, offer front group of mount pad and rear group of mount pad, on described front group of mount pad, place negative selenodont lens A-1 and double concave type lens A-2 and compressed by front trim ring 2, on described rear group of mount pad, place negative selenodont lens B-1 and lenticular lens B-2 and compressed by rear trim ring 4, between described double concave type lens A-2 and negative selenodont lens B-1, being provided with AB spacer ring 3.
In the present embodiment, the switching multiplying power of this increasing times mirror is 0.72, airspace between described front lens set A and rear lens set B is 7.2462mm, and the airspace between negative selenodont lens A-1 and double concave type lens A-2 in described front lens set A is 5.5978mm.This increasing times mirror has the features such as large, the large wide-angle of zoom ratio, adaptive power are strong.In the time of light path design, select high index of refraction, the optical glass material of low dispersion, by computer optics Computer Aided Design and optimization, makes imaging resolution high, can with the CCD of high definition or cmos camera adaptation, realize high definition video shooting.The mirror group of this increasing times mirror can realize in the high power zoom process of zoom lens simultaneously, and the imaging definition of system does not decline, and image do not cut, undistorted, and imaging effect is good.
Because the zoom ratio of this increasing times mirror switching mirror group is very high, and field angle makes a big difference before not switching through mirror group, thus in structural design, be mainly the each constituent element of assurance system the action such as concentricity and focusing accurately, steadily and good hand touch.Therefore, described front group of mount pad and rear group of mount pad in the interior processing processing of lens barrel 1, can guarantee the concentricity of lens set light path by same lathe effectively; Described front trim ring 2 has guaranteed the Assembly stability of front lens set A, and interception parasitic light, eliminates its impact on lens imaging quality; Logical light and airspace that described AB spacer ring 3 guarantees between front lens set A and rear lens set B; The Assembly stability of lens set B after described rear trim ring 4 guarantees, prevents that eyeglass is loosening or drops out.
The present invention is by the new structure design of this increasing times mirror lens set, disperse to increase the focal power of times mirror, increase the factor of aberration correction, the off-axis aberration of corrective system in the time increasing field angle, the imaging definition of principal goods mirror system in zoom overall process of high zoom ratio is not declined, and image do not cut, undistorted, and imaging effect is good, thereby fill up the market vacancy in this field, there is wide market application foreground.
It is same as the prior art that the present embodiment is not stated part, and the foregoing is only preferred embodiment of the present invention, and all equalizations of doing according to the present patent application the scope of the claims change and modify, and all should belong to covering scope of the present invention.
Claims (3)
1. a wide-angle high-power zoom lens increases times mirror, it is characterized in that: in the optical system of described increasing times mirror along light from left to right incident direction to be disposed with focal power be that front lens set A and the focal power of bearing is positive rear lens set B, described front lens set A is disposed with negative selenodont lens A-1 and double concave type lens A-2, and described rear lens set B is the gummed group of being connected airtight by negative selenodont lens B-1 and lenticular lens B-2; The physical construction of described increasing times mirror comprises lens barrel, in described lens barrel, offer front group of mount pad and rear group of mount pad, on described front group of mount pad, place negative selenodont lens A-1 and double concave type lens A-2 and compressed by front trim ring, on described rear group of mount pad, place negative selenodont lens B-1 and lenticular lens B-2 and compressed by rear trim ring, between described double concave type lens A-2 and negative selenodont lens B-1, being provided with AB spacer ring.
2. wide-angle high-power zoom lens according to claim 1 increases times mirror, it is characterized in that: the airspace between described front lens set A and rear lens set B is 7.2462mm.
3. wide-angle high-power zoom lens according to claim 1 and 2 increases times mirror, it is characterized in that: the airspace between negative selenodont lens A-1 and double concave type lens A-2 in described front lens set A is 5.5978mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410072922.3A CN103809274B (en) | 2014-03-03 | 2014-03-03 | Wide-angle high-power zoom lens doubles mirror |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410072922.3A CN103809274B (en) | 2014-03-03 | 2014-03-03 | Wide-angle high-power zoom lens doubles mirror |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103809274A true CN103809274A (en) | 2014-05-21 |
| CN103809274B CN103809274B (en) | 2016-03-30 |
Family
ID=50706299
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410072922.3A Active CN103809274B (en) | 2014-03-03 | 2014-03-03 | Wide-angle high-power zoom lens doubles mirror |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103809274B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105467549A (en) * | 2016-01-29 | 2016-04-06 | 福建福光股份有限公司 | F5mm large relative aperture mechanical passive athermalization lens and compensation adjusting method thereof |
| CN105607165A (en) * | 2016-03-08 | 2016-05-25 | 东莞华南设计创新院 | Segmental type isocandela-based double-layer condensing lens and design method therefor |
| CN107728298A (en) * | 2017-11-20 | 2018-02-23 | 嘉兴中润光学科技有限公司 | Focal length amplification doubles camera lens |
| CN108572433A (en) * | 2017-03-10 | 2018-09-25 | 湖北华中光电科技有限公司 | A kind of binary face high-power zoom lens |
| CN109143552A (en) * | 2017-06-16 | 2019-01-04 | 宁波舜宇光电信息有限公司 | Camera lens and camera module comprising the camera lens |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000292714A (en) * | 1999-04-08 | 2000-10-20 | Asahi Optical Co Ltd | Real image type variable power finder |
| JP2004240464A (en) * | 2004-05-25 | 2004-08-26 | Olympus Corp | Optical system |
| US6934092B1 (en) * | 1998-02-19 | 2005-08-23 | Canon Kabushiki Kaisha | Zoom lens and photographing apparatus having the same |
| CN1975501A (en) * | 2005-11-30 | 2007-06-06 | 佳能株式会社 | Zoom lens system and image-pickup apparatus including same |
| CN102289060A (en) * | 2011-08-20 | 2011-12-21 | 福建福光数码科技有限公司 | High-resolution zoom lens for intelligent transportation system |
| CN203732794U (en) * | 2014-03-03 | 2014-07-23 | 福建福光数码科技有限公司 | Barlow lens of wide-angle high-power zoom lens |
-
2014
- 2014-03-03 CN CN201410072922.3A patent/CN103809274B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6934092B1 (en) * | 1998-02-19 | 2005-08-23 | Canon Kabushiki Kaisha | Zoom lens and photographing apparatus having the same |
| JP2000292714A (en) * | 1999-04-08 | 2000-10-20 | Asahi Optical Co Ltd | Real image type variable power finder |
| JP2004240464A (en) * | 2004-05-25 | 2004-08-26 | Olympus Corp | Optical system |
| CN1975501A (en) * | 2005-11-30 | 2007-06-06 | 佳能株式会社 | Zoom lens system and image-pickup apparatus including same |
| CN102289060A (en) * | 2011-08-20 | 2011-12-21 | 福建福光数码科技有限公司 | High-resolution zoom lens for intelligent transportation system |
| CN203732794U (en) * | 2014-03-03 | 2014-07-23 | 福建福光数码科技有限公司 | Barlow lens of wide-angle high-power zoom lens |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105467549A (en) * | 2016-01-29 | 2016-04-06 | 福建福光股份有限公司 | F5mm large relative aperture mechanical passive athermalization lens and compensation adjusting method thereof |
| CN105607165A (en) * | 2016-03-08 | 2016-05-25 | 东莞华南设计创新院 | Segmental type isocandela-based double-layer condensing lens and design method therefor |
| CN108572433A (en) * | 2017-03-10 | 2018-09-25 | 湖北华中光电科技有限公司 | A kind of binary face high-power zoom lens |
| CN109143552A (en) * | 2017-06-16 | 2019-01-04 | 宁波舜宇光电信息有限公司 | Camera lens and camera module comprising the camera lens |
| CN109143552B (en) * | 2017-06-16 | 2021-09-17 | 宁波舜宇光电信息有限公司 | Lens and camera module comprising same |
| CN107728298A (en) * | 2017-11-20 | 2018-02-23 | 嘉兴中润光学科技有限公司 | Focal length amplification doubles camera lens |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103809274B (en) | 2016-03-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103809274B (en) | Wide-angle high-power zoom lens doubles mirror | |
| CN103913818B (en) | The low distortion micro pick-up lens of Large visual angle | |
| CN103116213B (en) | Three mega pixels are confocal trigger camera lens day and night | |
| CN104330873B (en) | High resolution day and night fish eye lens | |
| CN104199174A (en) | Day and night confocal high-definition lens with large target area | |
| CN103809268A (en) | High-light-flux automatic aperture fixed-focus lens | |
| CN103809276B (en) | Flanged wide-angle high-power zoom lens doubles mirror | |
| CN105259646B (en) | 2.8 8mm miniature zoom lens | |
| CN204229037U (en) | High resolution day and night fish eye lens | |
| CN104459950B (en) | High resolution day and night micro-lens | |
| CN103984077B (en) | High resolution day and night tight shot | |
| CN102902045B (en) | Pick-up lens for high-resolution single group movement industry | |
| CN104965296A (en) | High-resolution day-and-night dual-use economical lens and focusing method thereof | |
| CN203732795U (en) | Barlow lens with flange of wide-angle high-power lens | |
| CN104808314A (en) | Fisheye lens adapted to high-pixel large-target-surface chip | |
| CN204855923U (en) | Dual -purpose economic money camera lens of high resolution day night | |
| CN203732794U (en) | Barlow lens of wide-angle high-power zoom lens | |
| CN104181674A (en) | High-resolution fine adjustment day and night prime lens | |
| CN212083799U (en) | Doubling mirror of wide-angle high-power zoom lens | |
| CN105372797B (en) | A kind of mini-focal aspheric lens | |
| CN204086662U (en) | Day and night confocal large target surface high definition camera lens | |
| CN203870318U (en) | High-resolution day-night prime lens | |
| CN104090349B (en) | High resolution day and night CS interface tight shot | |
| CN202904108U (en) | High-resolution single-unit mobile industrial camera lens | |
| CN204086659U (en) | High resolving power fine setting day and night tight shot |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent of invention or patent application | ||
| CB02 | Change of applicant information |
Address after: 158 No. 350015 Fujian province Fuzhou Mawei District Jiangbin East Avenue Applicant after: FUJIAN FORECAM CO., LTD. Address before: 158 No. 350015 Fujian province Fuzhou Mawei District Jiangbin East Avenue Applicant before: Fujian Forecam Optics Co., Ltd. |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: APPLICANT; FROM: FUJIAN FORECAM DIGITAL TECHNOLOGY CO., LTD. TO: FUJIAN FORECAM CO., LTD. |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |