CN109324401A - 3 times of economical day and night confocal high definition glass flow zoom lens of one kind and its imaging method - Google Patents
3 times of economical day and night confocal high definition glass flow zoom lens of one kind and its imaging method Download PDFInfo
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- CN109324401A CN109324401A CN201811402457.XA CN201811402457A CN109324401A CN 109324401 A CN109324401 A CN 109324401A CN 201811402457 A CN201811402457 A CN 201811402457A CN 109324401 A CN109324401 A CN 109324401A
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- 239000011521 glass Substances 0.000 title claims abstract description 21
- 238000003384 imaging method Methods 0.000 title claims abstract description 11
- 230000005499 meniscus Effects 0.000 claims abstract description 50
- 230000003287 optical effect Effects 0.000 claims abstract description 18
- 238000004026 adhesive bonding Methods 0.000 claims abstract description 13
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 238000009738 saturating Methods 0.000 claims description 3
- 230000004438 eyesight Effects 0.000 description 8
- 230000004075 alteration Effects 0.000 description 6
- 230000004297 night vision Effects 0.000 description 4
- 238000009826 distribution Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000002411 adverse Effects 0.000 description 2
- 239000000571 coke Substances 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 239000003292 glue Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
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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
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/04—Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of organic materials, e.g. plastics
- G02B1/041—Lenses
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/14—Optical objectives specially designed for the purposes specified below for use with infrared or ultraviolet radiation
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/18—Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration
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Abstract
The present invention relates to a kind of 3 times of economical day and night confocal high definition glass flow zoom lens and its imaging methods, the optical system of the camera lens includes rear group of eyeglass B being positive along input path successively spaced focal power is negative from front to back preceding group of eyeglass A, diaphragm and focal power, and organizing eyeglass A before described includes the meniscus lens A-1, biconcave lens A-2 and meniscus lens A-3 set gradually from front to back；Group eyeglass B includes contiguity gluing unit, biconvex lens B-5 and the meniscus lens B-6 of the first non-spherical lens B-1, the second non-spherical lens B-2, biconvex lens B-3 and meniscus lens B-4 after described.Structure of the invention is reasonable, realizes high-resolution, zero temp shift is day and night confocal, and super economic, multiple spot zoom can be adapted to 6,000,000 and following CCD or CMOS.
Description
Technical field:
The present invention relates to a kind of 3 times of economical day and night confocal high definition glass flow zoom lens and its imaging methods.
Background technique:
It is existing to there are various 7-22mm three times zoom lens to be applied in security system on the market, still, due to making mostly
With Glass Design, camera lens is difficult to meet the market demand in pixel, performance and cost.In order to improve performance and pixel, therefore now
Reach the image quality of more high definition using more glass lens, but also therefore considerably increase product cost, causes product promotion difficult
Degree is promoted.Currently, in security industry, rarely have inexpensive, high image quality truly, Low Drift Temperature, high definition multiple spot varifocal mirror
Head.
Summary of the invention:
It is an object of the invention to places against the above deficiency, provide a kind of 3 times economical day and night confocal high definition glass modeling varifocal mirrors
Head and its imaging method, are not only simple in structure, rationally, and efficiently convenient.
To achieve the goals above, the technical solution adopted by the present invention is that: a kind of 3 times economical day and night confocal high definition glass modelings
Zoom lens, the optical system of the camera lens include along input path before successively spaced focal power is negative from front to back
The rear group of eyeglass B that group eyeglass A, diaphragm and focal power are positive, organizing eyeglass A before described includes the bent moon set gradually from front to back
Lens A-1, biconcave lens A-2 and meniscus lens A-3；After described group eyeglass B include the first non-spherical lens B-1, it is second non-
Contiguity gluing unit, biconvex lens B-5 and the meniscus lens B-6 of spherical lens B-2, biconvex lens B-3 and meniscus lens B-4.
Further, the airspace of the meniscus lens A-1 and biconcave lens A-2 is 3.11mm, the biconcave lens
The airspace of A-2 and meniscus lens A-3 are 0.1mm, and the airspace of the meniscus lens A-3 and diaphragm is 12.47mm, institute
The airspace for stating diaphragm and the first non-spherical lens B-1 is 7.31mm, and the first non-spherical lens B-1 and second is aspherical
The airspace of lens B-2 is the close of 1.85mm, the second non-spherical lens B-2 and biconvex lens B-3 and meniscus lens B-4
The airspace for connecing gluing unit is 0.39mm, the contiguity gluing unit and biconvex lens of the biconvex lens B-3 and meniscus lens B-4
The airspace of B-5 is that the airspace of 3.09mm, the biconvex lens B-5 and meniscus lens B-6 are 1.43mm.
Further, the focal length of the optical system of the camera lens is f, and meniscus lens A-1, biconcave lens A-2, bent moon are saturating
The contiguity gluing of mirror A-3, the first non-spherical lens B-1, the second non-spherical lens B-2, biconvex lens B-3 and meniscus lens B-4
Group, biconvex lens B-5 and the corresponding focal length of meniscus lens B-6 are respectively f1, f2, f3, f4, f5, f6, f7, f8；Wherein f1,
F2, f3, f4, f5, f6, f7, f8 and f meet following ratio: -9.5 <<-8；-2.5<<-2；4 <<5；1.8<<2.5；-3<<-2；1.2<<2；2<<3；-2<<-1.3。
Further, the f4 and f5 completely must satisfy: -1.2 <<-0.6。
Further, the first non-spherical lens B-1 and the second non-spherical lens B-2 is plastic material manufacture.
Further, an optical filter is additionally provided on rear side of the meniscus lens B-6.
The another technical solution that the present invention uses is: a kind of 3 times of economical day and night confocal high definition glass flow zoom lens
Working method, using the economical day and night confocal high definition glass flow zoom lens of above-mentioned 3 times of one kind, when work, optical path sequence enters
It is imaged after preceding group of eyeglass A, diaphragm and rear group eyeglass B.
Compared with prior art, the present invention, which has the effect that, organizes two panels separation aspheric in eyeglass after (1) present invention passes through
Spherical aberration and color difference are corrected in face, and the aspherical air-gap of two panels compensates senior aberration, and the reasonable computation each aspherical high temperature and low of making
Focus is without offset under warm environment, and achievees the effect that day and night parfocalization；(2) present invention utilizes aspheric surface technology, improves precision and letter
Change structure, realize that high-definition camera is horizontal with ultralow cost, not only while can reach high-quality pixel daytime, light not
Foot or in the case where night, it may have high definition image quality, the adverse circumstances of different temperatures still can be at perfect picture；(3) of the invention
It is simple and reasonable for structure, it solved certainly existing 7-22mm zoom lens clarity deficiency, led to increased costs using more lens structures
The problem of.
Detailed description of the invention:
Fig. 1 is the structural schematic diagram of the optical system of short focus in the embodiment of the present invention；
Fig. 2 is the structural schematic diagram of the optical system of focal length in the embodiment of the present invention；
Fig. 3 is that short focus focuses so that the MTF under visible light central vision image quality optimal cases schemes in the embodiment of the present invention；
Fig. 4 is that short focus focuses so that corresponding night vision MTF under visible light central vision image quality optimal cases in the embodiment of the present invention
Figure；
Fig. 5 is that focal length focuses so that the MTF under visible light central vision image quality optimal cases schemes in the embodiment of the present invention；
Fig. 6 is that focal length focuses so that corresponding night vision MTF under visible light central vision image quality optimal cases in the embodiment of the present invention
Figure.
In figure:
Eyeglass A is organized before A-；A-1: meniscus lens A-1；A-2: biconcave lens A-2；A-3: meniscus lens A-3；Eyeglass B is organized after B-；
B-1: the first non-spherical lens B-1；B-2: the second non-spherical lens B-2；B-3: biconvex lens B-3；B-4: meniscus lens B-4；
B-5: biconvex lens B-5；B-6: meniscus lens B-6；C- optical filter；D- diaphragm.
Specific embodiment:
The present invention will be further described in detail with reference to the accompanying drawings and detailed description.
As shown in figs. 1 to 6, a kind of 3 times of economical day and night confocal high definition glass flow zoom lens of the present invention, the light of the camera lens
System includes along input path successively spaced focal power is negative from front to back preceding group of eyeglass A, diaphragm D and light focus
Rear group of eyeglass B being positive is spent, organizing eyeglass A before described includes the meniscus lens A-1 set gradually from front to back, biconcave lens A-2
And meniscus lens A-3；Group eyeglass B includes the first non-spherical lens B-1, the second non-spherical lens B-2, biconvex lens after described
On rear side of the contiguity gluing unit of B-3 and meniscus lens B-4, biconvex lens B-5 and meniscus lens B-6, the meniscus lens B-6
It is additionally provided with an optical filter C.
In the present embodiment, the airspace of the meniscus lens A-1 and biconcave lens A-2 are 3.11mm, and the concave-concave is saturating
The airspace of mirror A-2 and meniscus lens A-3 are 0.1mm, and the airspace of the meniscus lens A-3 and diaphragm is 12.47mm,
The airspace of the diaphragm and the first non-spherical lens B-1 are 7.31mm, the first non-spherical lens B-1 and the second aspheric
The airspace of face lens B-2 is 1.85mm's, the second non-spherical lens B-2 and biconvex lens B-3 and meniscus lens B-4
The airspace for touching gluing unit is 0.39mm, the contiguity gluing unit and lenticular of the biconvex lens B-3 and meniscus lens B-4
The airspace of mirror B-5 is that the airspace of 3.09mm, the biconvex lens B-5 and meniscus lens B-6 are 1.43mm.
In the present embodiment, the focal length of the optical system of the camera lens is f, meniscus lens A-1, biconcave lens A-2, bent moon
The contiguity glue of lens A-3, the first non-spherical lens B-1, the second non-spherical lens B-2, biconvex lens B-3 and meniscus lens B-4
It is combined, biconvex lens B-5 and the corresponding focal length of meniscus lens B-6 are respectively f1, f2, f3, f4, f5, f6, f7, f8；Wherein
F1, f2, f3, f4, f5, f6, f7, f8 and f meet following ratio: -9.5 <<-8；-2.5<<-2；4 <<5；1.8
<<2.5；-3<<-2；1.2<<2；2<<3；-2<<-1.3.By the focal power to camera lens according to the above ratio
Example carries out reasonable distribution, and each eyeglass is proportional relative to system focal length f, makes camera lens in the wave-length coverage of 420~850nm
Aberration is reasonably corrected and is balanced.
In the present embodiment, the f4 and f5 completely be must satisfy: -1.2 <<-0.6.So that camera lens is can be in high temperature and low
Warm blur-free imaging makes temperature drift zero, under the conditions of severe temperature can high definition imaging, no defocus is rear to organize the aspherical focal length of two panels
Focal power ratio must satisfy conditions above.
In the present embodiment, the first non-spherical lens B-1 and the second non-spherical lens B-2 are plastic material manufacture.
In the present embodiment, the positive light coke aberration of eyeglass B is organized after the negative power correction of preceding group of eyeglass A, it is rear to organize in eyeglass B
Two panels non-spherical lens correct all senior aberrations.Entire camera lens guarantees camera lens refractive index and the distribution of focal power approximate ratio,
Guarantee that the harmony of the incidence angle size of front and back group eyeglass improves manufacturing feasibility to reduce the sensibility of camera lens.Pass through conjunction
Reason distributes each eyeglass focal length, keeps imaging system spherical aberration and the curvature of field small simultaneously, guarantees axle center and off-axis visual field image quality.Pass through the above mirror
The optical system of piece composition, total length of light path is shorter, then camera lens is small in size；It is burnt big afterwards, it can be cooperated with the video camera of multiple interfaces
It uses.Wherein the first non-spherical lens B-1, the second non-spherical lens B-2 are two panels plastic aspherical element, and image quality is good, at low cost；Before
Group eyeglass A negative power, rear to organize eyeglass B positive light coke, guaranteeing still can normal use in high and low temperature environment.Wherein meniscus lens A-
1, the preceding group of camera lens that biconcave lens A-2, meniscus lens A-3 constitute that focal power is negative serves as the compensation group of entire zoom lens, the
It is one aspherical B-1, the second aspherical B-2, the contiguity gluing unit of biconvex lens B-3 and meniscus lens B-4, biconvex lens B-5, curved
The rear group of camera lens that the focal power that month lens B-6 is constituted is positive serves as the zoom group of entire zoom lens, when zoom group is to diaphragm side
Entire camera lens focus is moved to movement, realizes zoom, while compensation group also starts to diaphragm direction motion compensation zoom
Image planes amount of movement afterwards realizes zoom.Guarantee that image planes position can blur-free imaging simultaneously.In the present embodiment, pass through zoom and compensation group
Movement, it can be achieved that variation of the focal length from 7mm to 22mm, while keeping image planes blur-free imaging, realize three times zoom.
In the present embodiment, the parameter of each eyeglass is as shown in the table:
Following optical index has been reached by the optical system that above-mentioned eyeglass forms:
(1) short focus focal length: f=7mm；Focal length focal length: f=22mm；
(2) short focus relative aperture F=1.7；Focal length relative aperture F=2.8；
(3) short focus field angle: 2w >=48 °；Focal length field angle: 2w >=20 ° (image space is as 2 η ' of visual field >=Ф 6.9mm)；
(4) short focus TV distorts: < -3%；Focal length TV distortion: < -0.5%；
(5) it resolution ratio: can be adapted to 6,000,000 pixel high-resolution CCD or cmos camera；
(6) total length of light path ∑≤51mm, optics rear cut-off distance L ' >=5mm；
(7) it is applicable in spectral line range: 420nm~850nm.
In the present embodiment, focused from short focus so that the MTF under visible light central vision image quality optimal cases schemes (shown in Fig. 3)
It can be seen that figure medium spatial frequency 120lp/mm, MTF are greater than 0.3, it is imaged outstanding.It focuses from short focus so that visible light central vision
Corresponding night vision MTF figure (shown in Fig. 4) under image quality optimal cases it can be seen that, figure medium spatial frequency 120lp/mm, MTF are greater than 0.3,
It is imaged outstanding；From focal length focus so that under visible light central vision image quality optimal cases MTF figure (shown in Fig. 5) it can be seen that, figure
Medium spatial frequency 120lp/mm, MTF are greater than 0.3, are imaged outstanding；It focuses from focal length so that the best feelings of visible light central vision image quality
Corresponding night vision MTF figure (shown in Fig. 6) under condition, figure medium spatial frequency 120lp/mm, MTF are greater than 0.3, are imaged outstanding.
The present invention has the advantages that structure is simple, and it is small in size, realize that high definition is taken the photograph using plastic aspherical element with ultralow cost
As horizontal, 3 times of zooms, reasonable distribution focal power, in the adverse circumstances of different temperatures are realized using zoom group and compensation group are mobile
It still can be at perfect picture.
The another technical solution that the present invention uses is: a kind of 3 times of economical day and night confocal high definition glass flow zoom lens
Working method, using the economical day and night confocal high definition glass flow zoom lens of above-mentioned 3 times of one kind, when work, optical path sequence enters
It is imaged after preceding group of eyeglass A, diaphragm and rear group eyeglass B.
The foregoing is merely presently preferred embodiments of the present invention, all equivalent changes done according to scope of the present invention patent with
Modification, is all covered by the present invention.
Claims (7)
1. a kind of 3 times of economical day and night confocal high definition glass flow zoom lens, it is characterised in that: the optical system of the camera lens includes
After being positive along input path successively spaced focal power is negative from front to back preceding group of eyeglass A, diaphragm and focal power
Group eyeglass B, it is described before group eyeglass A include the meniscus lens A-1, biconcave lens A-2 and bent moon that set gradually from front to back saturating
Mirror A-3；Group eyeglass B includes the first non-spherical lens B-1, the second non-spherical lens B-2, biconvex lens B-3 and bent moon after described
Contiguity gluing unit, biconvex lens B-5 and the meniscus lens B-6 of lens B-4.
2. a kind of 3 times according to claim 1 economical day and night confocal high definition glass flow zoom lens, it is characterised in that: institute
The airspace for stating meniscus lens A-1 and biconcave lens A-2 is 3.11mm, the sky of the biconcave lens A-2 and meniscus lens A-3
It is divided into 0.1mm between gas, the airspace of the meniscus lens A-3 and diaphragm is 12.47mm, the diaphragm and first aspherical
The airspace of mirror B-1 is 7.31mm, and the airspace of the first non-spherical lens B-1 and the second non-spherical lens B-2 are
The airspace of the contiguity gluing unit of 1.85mm, the second non-spherical lens B-2 and biconvex lens B-3 and meniscus lens B-4
Airspace for 0.39mm, the contiguity gluing unit and biconvex lens B-5 of the biconvex lens B-3 and meniscus lens B-4 is
The airspace of 3.09mm, the biconvex lens B-5 and meniscus lens B-6 are 1.43mm.
3. a kind of 3 times according to claim 1 economical day and night confocal high definition glass flow zoom lens, it is characterised in that: institute
The focal length for stating the optical system of camera lens is f, meniscus lens A-1, biconcave lens A-2, meniscus lens A-3, the first non-spherical lens
B-1, the second non-spherical lens B-2, the contiguity gluing unit of biconvex lens B-3 and meniscus lens B-4, biconvex lens B-5 and curved
Moon lens B-6, corresponding focal length was respectively f1, f2, f3, f4, f5, f6, f7, f8；Wherein f1, f2, f3, f4, f5, f6, f7, f8
Meet following ratio with f: -9.5 <<-8；-2.5<<-2；4 <<5；1.8<<2.5；-3<<-2；1.2<<2；2<<3；-2<<-1.3。
4. a kind of 3 times according to claim 3 economical day and night confocal high definition glass flow zoom lens, it is characterised in that: institute
Stating f4 and f5 completely must satisfy: -1.2 <<-0.6。
5. a kind of 3 times according to claim 1 economical day and night confocal high definition glass flow zoom lens, it is characterised in that: institute
The first non-spherical lens B-1 and the second non-spherical lens B-2 are stated as plastic material manufacture.
6. a kind of 3 times according to claim 1 economical day and night confocal high definition glass flow zoom lens, it is characterised in that: institute
It states and is additionally provided with an optical filter on rear side of meniscus lens B-6.
7. a kind of imaging method of 3 times of economical day and night confocal high definition glass flow zoom lens, it is characterised in that: including using as weighed
Benefit requires 3 times of economical day and night confocal high definition glass flow zoom lens described in 1~6 any one, and when work, optical path sequence enters
It is imaged after preceding group of eyeglass A, diaphragm and rear group eyeglass B.
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| CN201811402457.XA CN109324401B (en) | 2018-11-23 | 2018-11-23 | 3-time economic day and night confocal Gao Qingbo plastic zoom lens and imaging method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811402457.XA CN109324401B (en) | 2018-11-23 | 2018-11-23 | 3-time economic day and night confocal Gao Qingbo plastic zoom lens and imaging method thereof |
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| CN109324401A true CN109324401A (en) | 2019-02-12 |
| CN109324401B CN109324401B (en) | 2023-06-02 |
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| CN110109232A (en) * | 2019-05-14 | 2019-08-09 | 福建福光股份有限公司 | A kind of zoom lens and its imaging method |
| CN112346230A (en) * | 2020-11-30 | 2021-02-09 | 深圳融合光学科技有限公司 | High-resolution large-target-surface 4-10mm day and night zooming monitoring lens and imaging method |
| CN112433350A (en) * | 2020-12-31 | 2021-03-02 | 深圳融合光学科技有限公司 | Day and night zooming large-aperture monitoring system camera lens |
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| CN202615025U (en) * | 2012-03-29 | 2012-12-19 | 福州市浩邦电子科技有限公司 | Dual-waveband high-resolution optical zoom lens |
| CN202615028U (en) * | 2012-03-29 | 2012-12-19 | 福州市浩邦电子科技有限公司 | Dual-waveband lens group structure |
| CN206804977U (en) * | 2017-05-09 | 2017-12-26 | 东莞市宇瞳光学科技股份有限公司 | A kind of large aperture ultra-wide angle ultra high-definition zoom lens |
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| CN101196608A (en) * | 2007-11-23 | 2008-06-11 | 秦皇岛视听机械研究所 | Ultra-large field angle fisheye lens structure used for complete spherical dome-screen projection of digital projector |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110109232A (en) * | 2019-05-14 | 2019-08-09 | 福建福光股份有限公司 | A kind of zoom lens and its imaging method |
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| CN112346230A (en) * | 2020-11-30 | 2021-02-09 | 深圳融合光学科技有限公司 | High-resolution large-target-surface 4-10mm day and night zooming monitoring lens and imaging method |
| CN112433350A (en) * | 2020-12-31 | 2021-03-02 | 深圳融合光学科技有限公司 | Day and night zooming large-aperture monitoring system camera lens |
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| Publication number | Publication date |
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| CN109324401B (en) | 2023-06-02 |
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