CN104459933B - Power zoom, focusing 7-22 zoom monitoring camera and control method thereof - Google Patents
Power zoom, focusing 7-22 zoom monitoring camera and control method thereof Download PDFInfo
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- CN104459933B CN104459933B CN201410776976.8A CN201410776976A CN104459933B CN 104459933 B CN104459933 B CN 104459933B CN 201410776976 A CN201410776976 A CN 201410776976A CN 104459933 B CN104459933 B CN 104459933B
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
- G02B7/10—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification by relative axial movement of several lenses, e.g. of varifocal objective lens
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B13/00—Viewfinders; Focusing aids for cameras; Means for focusing for cameras; Autofocus systems for cameras
- G03B13/32—Means for focusing
- G03B13/34—Power focusing
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lens Barrels (AREA)
- Lenses (AREA)
- Microscoopes, Condenser (AREA)
Abstract
The present invention relates to a kind of power zoom, focus on 7 22 zoom monitoring camera and control methods thereof, this camera lens includes front group of microscope base and rear group of microscope base, before described, group microscope base is movably installed in front group of lens barrel, the front group of sector that before group lens barrel outer sheath is provided with and drives before described, group microscope base is movable, after described, group microscope base is movably installed in rear group of lens barrel, after described, group lens barrel outer sheath organizes, after being provided with drive, the rear cam that microscope base is movable, and described front group of lens barrel is connected with reduction box by two main body guide pins respectively with rear group of lens barrel；It is provided with focusing motor and zoom motor in described reduction box, described front group sector is made with and focuses on the focusing gear that motor output gear is meshed, saving a large amount of human and material resources；Described focusing motor and zoom motor are arranged at the same side of reduction box, solve constructive interference problem；Two stepper motor steps are 3400 steps so that step number is many, focusing accuracy is high, rational in infrastructure and production is easy.
Description
Technical field
The present invention relates to the imaging lens device of monitoring system, particularly a kind of power zoom, focusing 7-22 zoom monitoring camera and control method thereof.
Background technology
Along with fast development, the gradually stepping up of people's safety consciousness of science and technology, the requirement to camera lens quality is more and more higher, and as required, high intensity, high impact-resistant, utilization temperature range be wide, electromechanical controls.Along with the continuous maturing of mould, camera lens is also corresponding easily by plastic.For camera lens manufacturer, the camera lens of batch production wants that concordance is good, yield is high, rear burnt concordance is good, and plastic cement is that good material selects.
In monitoring trade, although conventional MFZ camera lens is also to use power zoom, Power focus, but its step number is few, focusing accuracy is the highest, the deficiency of structure, produce the problems such as numerous and diverse.As: 1, MFZ number of motor steps 1000 step；2, the gear of the focusing group that MFZ uses and cam independence, be fixed as one by screw locking, need a large amount of human and material resources；The problems such as 3, focus motor and zoom motor separate both sides, structure easily interference.
Summary of the invention
In order to overcome the deficiencies in the prior art, it is an object of the invention to provide that a kind of step number is many, focusing accuracy is high, rational in infrastructure and produce easy power zoom, focusing 7-22 zoom monitoring camera and control method thereof.
The technical scheme is that a kind of power zoom, focus on 7-22 zoom monitoring camera, the frame for movement of described camera lens includes the front group of microscope base for installing front group of A and organizes the rear group of microscope base of B after installing, before described, group microscope base is movably installed in front group of lens barrel, the front group of sector that before group lens barrel outer sheath is provided with and drives before described, group microscope base is movable, after described, group microscope base is movably installed in rear group of lens barrel, after described, group lens barrel outer sheath organizes, after being provided with drive, the rear cam that microscope base is movable, described front group of lens barrel is connected with reduction box by two main body guide pins respectively with rear group of lens barrel；Focusing motor and zoom motor it is provided with in described reduction box, it is made with in group sector before described and focuses on the focusing gear that motor output gear is meshed, uniformly offer three helicla flutes before described inside group sector, described front group microscope base has the protruding pin stretched in corresponding helicla flute；It is provided with the rear group of sector gear being meshed with zoom motor output gear outside described rear cam, uniformly offers three helicla flutes inside described rear cam, described rear group microscope base has the protruding pin stretched in corresponding helicla flute；Described focusing motor and zoom motor are arranged at the same side of reduction box, and two stepper motor steps are 3400 steps, and the focal length of described camera lens is 7～22mm.
Further, it is front group of negative A and focal power is rear group of positive B that the optical system of described camera lens is sequentially provided with focal power along light direction, between front group of A and rear group B, iris C is set, before described, group A is sequentially provided with the first glued group of negative selenodont lens A-1 and biconcave lens A-2 and negative selenodont lens A-3 contiguity, described after group B be sequentially provided with biconvex lens B-1, negative selenodont lens B-2, biconvex lens B-3, the second glued group and negative selenodont lens B-6 of being touched by negative selenodont lens B-4 and biconvex lens B-5.
nullFurther，Before described, the airspace between group A and rear group B is 20.523mm，In described front group, the airspace between the glued group of negative selenodont lens A-1 and first is: 2.026mm，In described front group, the airspace between the first glued group and light hurdle C is: 12.325mm，In described rear group B, the airspace between light hurdle C and biconvex lens B-1 is: 6.579mm，Airspace between biconvex lens B-1 and negative selenodont lens B-2 is 1.217mm，Airspace between negative selenodont lens B-2 and biconvex lens B-3 is: 1.324mm，Airspace between the glued group of biconvex lens B-3 and second is: 2.143mm，Airspace between second glued group and negative selenodont lens B-6 is: 1.370mm.
A kind of power zoom, the control method of focusing 7-22 zoom monitoring camera, it is characterized in that: use power zoom as above, focusing 7-22 zoom monitoring camera, front group of sector and rear group of sector gear is driven respectively by two motors, front group of A and rear group of B is moved forward and backward, and then realizes Power focus and the zoom of camera lens.
Compared with prior art, the method have the advantages that
(1) reasonable distribution front group of A and the focal power of rear group of B in the optical texture of retrofocus type.In rear group of B, the 4th of three-chip type structure the group of eyeglass is changed into cemented doublet group, make camera lens reach the performance indications that object lens of large relative aperture, Radix Rumicis, structure length are short.
(2) by the optical glass material of forward and backward two groups nine seven groups of reasonable selection, select high index of refraction, the optical glass material of low dispersion as far as possible.By area of computer aided optical design and optimization, correcting the various aberrations of optical lens, the resolution making camera lens is high perfectly, adapts to the requirement of 3,000,000 pixel high definition video shootings.
(3) when optical design, the wide spectral range of 480nm～850nm is carried out aberrational correction and balance, make camera lens have excellent picture element at wide spectral range, it is achieved that wide Spectral Confocal.Camera lens can not only blur-free imaging under photoenvironment in the daytime, night extremely low illumination or zero illumination in the environment of also can blur-free imaging by infrared light filling, it is achieved that monitoring continuously in 24 hours, and the not defocusing when day and night switching, it is not necessary to on-the-spot focusing.
(4) camera lens uses reinforced plastics, and extensively, electromechanical controls for tool high intensity, HI high impact, use temperature range, and the concordance of camera lens batch production is good, yield is high, rear burnt concordance is good.
With detailed description of the invention the present invention made further details of elaboration below in conjunction with the accompanying drawings.
Accompanying drawing explanation
Fig. 1 is the optical system diagram of the embodiment of the present invention.
Fig. 2 is the mechanical construction drawing of the embodiment of the present invention.
In figure: organize A before A-, A-1-bears selenodont lens A-1, A-2-biconcave lens A-2, A-3-bear selenodont lens A-3, organize B B-1-biconvex lens B-1 after B-, B-2-bears selenodont lens B-2, B-3-biconvex lens B-3, B-4-bear selenodont lens B-4, B-5-biconvex lens B-5, B-6 bears selenodont lens B-6, C-iris C；Organize lens barrel before 1-, before 2-, organize microscope base, organize sector, 4-CD-ROM drive, cam after 5-before 3-, after 6-, organize microscope base, organize lens barrel, 8-reduction box after 7-, after 9-, organize sector gear.
Detailed description of the invention
As shown in Figure 1 and 2, a kind of power zoom, focus on 7-22 zoom monitoring camera, the frame for movement of described camera lens includes the front group of microscope base 2 for installing front group of A and organizes the rear group of microscope base 6 of B after installing, before described, group microscope base 2 is movably installed in front group of lens barrel 1, front group of movable sector 3 of group microscope base 2 before group lens barrel 1 outer sheath is provided with and drives before described, after described, group microscope base 6 is movably installed in rear group of lens barrel 7, after described, group lens barrel 7 outer sheath organizes the movable rear cam 5 of microscope base 6 after being provided with drive, described front group of lens barrel 1 is connected with reduction box 8 by two main body guide pins respectively with rear group of lens barrel 7；It is provided with focusing motor and zoom motor in described reduction box 8, described front group sector 3 is made with and focuses on motor output gear
The focusing gear being meshed, uniformly offers three helicla flutes, described front group microscope base 2 has the protruding pin stretched in corresponding helicla flute inside described front group sector 3；It is provided with the rear group of sector gear 9 being meshed with zoom motor output gear outside described rear cam 5, uniformly offers three helicla flutes inside described rear cam 5, described rear group microscope base 6 has the protruding pin stretched in corresponding helicla flute；Described focusing motor and zoom motor are arranged at the same side of reduction box 8, and two stepper motor steps are 3400 steps, and the focal length of described camera lens is 7～22mm.
In the present embodiment, it is front group of negative A and focal power is rear group of positive B that the optical system of described camera lens is sequentially provided with focal power along light direction, between front group of A and rear group B, iris C is set, before described, group A is sequentially provided with the first glued group of negative selenodont lens A-1 and biconcave lens A-2 and negative selenodont lens A-3 contiguity, described after group B be sequentially provided with biconvex lens B-1, negative selenodont lens B-2, biconvex lens B-3, the second glued group and negative selenodont lens B-6 of being touched by negative selenodont lens B-4 and biconvex lens B-5.
nullIn the present embodiment，Before described, the airspace between group A and rear group B is 20.523mm，In described front group, the airspace between the glued group of negative selenodont lens A-1 and first is: 2.026mm，In described front group, the airspace between the first glued group and light hurdle C is: 12.325mm，In described rear group B, the airspace between light hurdle C and biconvex lens B-1 is: 6.579mm，Airspace between biconvex lens B-1 and negative selenodont lens B-2 is 1.217mm，Airspace between negative selenodont lens B-2 and biconvex lens B-3 is: 1.324mm，Airspace between the glued group of biconvex lens B-3 and second is: 2.143mm，Airspace between second glued group and negative selenodont lens B-6 is: 1.370mm.
In the present embodiment, the technical specification that this camera lens realizes is as follows: (1) focal length: f '=7～22mm；(2) relative aperture D/F=1/1.4；(3) angle of visual field 2 ω: 43 °～14 ° (effective imaging surface n ' >=φ 6.674mm)；(4) it is suitable for spectral region: 480nm～850nm；(5) resolution: adaptive with the high-definition camera of 3,000,000 pixels；(6) light path overall length ∑ L≤50mm.
Owing to the resolution of this camera lens is the highest, and the resolution of peripheral field and central market is not allow for the biggest difference, so the action such as the concentricity of each constituent element of system to be guaranteed and focusing accurate, steadily and good hand touch in structure designs.
Reasonable distribution front group of A and the focal power of rear group of B in the optical system of this retrofocus type；Use reinforced plastics (comprising lens barrel, microscope base, cam and reduction box) in Machine Design, improve camera lens yield, rear burnt concordance, and use two motors to drive camera lens to carry out power zoom, focusing respectively；Cooperation optically and mechanically, really realizes the power zoom of million high definition camera lenses, focusing.
The present invention is to be upgraded to MFZ2.0 camera lens by MFZ camera lens, and MFZ2.0 camera lens step number is more than three times of MFZ, focusing accuracy is high, it is not enough to also improve MFZ structure, produce numerous and diverse problem, has the advantage that two stepper motor steps are 3400 steps；The gear focused on and cam are one, a large amount of human and material resources of saving；Focus on motor and zoom motor is placed on the same side, solve constructive interference problem.
As shown in Figure 2, a kind of power zoom, focusing 7-22 zoom monitoring camera control method, use power zoom as above, focusing 7-22 zoom monitoring camera, front group of sector 3 and rear group of sector gear 9 is driven respectively by two motors, front group of A and rear group of B is moved forward and backward, and then realizes Power focus and the zoom of camera lens, if again by communications protocol softwares such as rear ends 485, then can realize remote electric accurately to control, really realize lens zoom function.
The foregoing is only presently preferred embodiments of the present invention, all impartial changes done according to scope of the present invention patent and modification, all should belong to the covering scope of the present invention.
Claims (3)
1. a power zoom, focus on 7-22 zoom monitoring camera, it is characterized in that: the frame for movement of described camera lens include the front group of microscope base for installing front group (A) and after installing rear group of microscope base of group (B), before described, group microscope base is movably installed in front group of lens barrel, the front group of sector that before group lens barrel outer sheath is provided with and drives before described, group microscope base is movable, after described, group microscope base is movably installed in rear group of lens barrel, after described, group lens barrel outer sheath organizes, after being provided with drive, the rear cam that microscope base is movable, described front group of lens barrel is connected with reduction box by two main body guide pins respectively with rear group of lens barrel；Focusing motor and zoom motor it is provided with in described reduction box, it is made with in group sector before described and focuses on the focusing gear that motor output gear is meshed, uniformly offer three helicla flutes before described inside group sector, described front group microscope base has the protruding pin stretched in corresponding helicla flute；It is provided with the rear group of sector gear being meshed with zoom motor output gear outside described rear cam, uniformly offers three helicla flutes inside described rear cam, described rear group microscope base has the protruding pin stretched in corresponding helicla flute；nullDescribed focusing motor and zoom motor are arranged at the same side of reduction box，Two stepper motor steps are 3400 steps，The focal length of described camera lens is 7～22mm，It is front group negative (A) and focal power is rear group positive (B) that the optical system of described camera lens is sequentially provided with focal power along light direction，Iris (C) is set between front group (A) and rear group (B)，Described front group (A) is sequentially provided with the first negative selenodont lens (A-1)、And the first glued group that biconcave lens (A-2) and the second negative selenodont lens (A-3) are touched，Described rear group (B) is sequentially provided with the first biconvex lens (B-1)、3rd negative selenodont lens (B-2)、Second biconvex lens (B-3)、The the second glued group touched by the 4th negative selenodont lens (B-4) and the 3rd biconvex lens (B-5)、And the 5th negative selenodont lens (B-6).
nullPower zoom the most according to claim 1、Focus on 7-22 zoom monitoring camera，It is characterized in that: the airspace between described front group (A) and rear group (B) is 20.523mm，In described front group, the airspace between the first negative selenodont lens (A-1) and the first glued group is: 2.026mm，In described front group, the airspace between the first glued group and light hurdle (C) is: 12.325mm，Airspace between described rear group of (B) Zhong Guanglan (C) and the first biconvex lens (B-1) is: 6.579mm，Airspace between first biconvex lens (B-1) and the 3rd negative selenodont lens (B-2) is 1.217mm，Airspace between 3rd negative selenodont lens (B-2) and the second biconvex lens (B-3) is: 1.324mm，Airspace between second biconvex lens (B-3) and the second glued group is: 2.143mm，Airspace between second glued group and the 5th negative selenodont lens (B-6) is: 1.370mm.
3. a power zoom, the control method of focusing 7-22 zoom monitoring camera, it is characterized in that: use power zoom as claimed in claim 1, focusing 7-22 zoom monitoring camera, front group of sector and rear group of sector gear is driven respectively by two motors, front group (A) and rear group (B) is moved forward and backward, and then realizes Power focus and the zoom of camera lens.
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| CN201410776976.8A CN104459933B (en) | 2014-12-17 | 2014-12-17 | Power zoom, focusing 7-22 zoom monitoring camera and control method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410776976.8A CN104459933B (en) | 2014-12-17 | 2014-12-17 | Power zoom, focusing 7-22 zoom monitoring camera and control method thereof |
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| CN104459933A CN104459933A (en) | 2015-03-25 |
| CN104459933B true CN104459933B (en) | 2016-08-24 |
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| CN101211001A (en) * | 2006-12-31 | 2008-07-02 | 深圳市大族激光科技股份有限公司 | Zooming expander |
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| CN103116210A (en) * | 2013-02-20 | 2013-05-22 | 福建福光数码科技有限公司 | Power zoom, power focusing and full plastic 3-megapixel lens capable of being used in the day and at night |
| CN103823295A (en) * | 2014-03-07 | 2014-05-28 | 福建福光数码科技有限公司 | Electric-zooming day and night dual-purpose pick-up lens |
| CN204287579U (en) * | 2014-12-17 | 2015-04-22 | 福建福光数码科技有限公司 | Power zoom, focusing 7-22 zoom monitoring camera |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US7075732B2 (en) * | 2003-09-22 | 2006-07-11 | Olympus Corporation | Zoom optical system, and imaging system incorporating the same |
| JP4840909B2 (en) * | 2005-12-26 | 2011-12-21 | オリンパスイメージング株式会社 | Zoom lens and image pickup apparatus including the same |
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- 2014-12-17 CN CN201410776976.8A patent/CN104459933B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101211001A (en) * | 2006-12-31 | 2008-07-02 | 深圳市大族激光科技股份有限公司 | Zooming expander |
| CN101825763A (en) * | 2009-12-31 | 2010-09-08 | 福建福光数码科技有限公司 | High resolution day and night multipoint zoom lens |
| CN103116210A (en) * | 2013-02-20 | 2013-05-22 | 福建福光数码科技有限公司 | Power zoom, power focusing and full plastic 3-megapixel lens capable of being used in the day and at night |
| CN103823295A (en) * | 2014-03-07 | 2014-05-28 | 福建福光数码科技有限公司 | Electric-zooming day and night dual-purpose pick-up lens |
| CN204287579U (en) * | 2014-12-17 | 2015-04-22 | 福建福光数码科技有限公司 | Power zoom, focusing 7-22 zoom monitoring camera |
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| CN104459933A (en) | 2015-03-25 |
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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. |
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