CN104459931B - High-resolution synchronization focusing camera camera lens and its control method - Google Patents
High-resolution synchronization focusing camera camera lens and its control method Download PDFInfo
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- CN104459931B CN104459931B CN201410783375.XA CN201410783375A CN104459931B CN 104459931 B CN104459931 B CN 104459931B CN 201410783375 A CN201410783375 A CN 201410783375A CN 104459931 B CN104459931 B CN 104459931B
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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
- G02B7/09—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification adapted for automatic focusing or varying magnification
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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
- G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
- G02B13/009—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras having zoom function
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/06—Panoramic objectives; So-called "sky lenses" including panoramic objectives having reflecting surfaces
Abstract
The present invention relates to a kind of high-resolution synchronization focusing camera camera lens and its control method, it is characterised in that：Including body tube（8）, be located at body tube（8）In vivo can synchronization-moving front cam（2）With rear cam（9）, institute's front cam（2）With rear cam（9）Front group lens barrel is respectively equipped with vivo（3）With rear microscope base（12）, the front group of lens barrel（3）Front microscope base is provided with vivo（4）；In the optical system of the camera lens along light from left to right incident direction be respectively provided with focal power be front group of negative A, focal power be rear group of positive B and iris C, high-resolution synchronization focusing camera lens construction of the present invention is simple, reasonable in design, is conducive to realizing focusing automatically in structure.
Description
Technical field
The present invention relates to a kind of high-resolution synchronization focusing camera camera lens and its control method.
Background technology
With the popularization on a large scale of monitoring intelligent, requirement more and more higher of the market to automatic focusing function product, to peace
The research and development technology level requirement more and more higher of anti-industry, research and development, production cost even more increase further.But there is presently no a
The high-resolution synchronization focusing camera camera lens that suitable security protection industry is used.
Content of the invention
It is an object of the invention to provide a kind of high-resolution synchronization focusing camera camera lens, the high-resolution synchronously take the photograph by focusing
As lens construction is simple, reasonable in design, be conducive to realizing focusing automatically in structure.
High-resolution synchronization focusing camera camera lens of the present invention, it is characterised in that：Including body tube（8）, be located at body tube（8）
In vivo can synchronization-moving front cam（2）With rear cam（9）, institute's front cam（2）With rear cam（9）Front group mirror is respectively equipped with vivo
Cylinder（3）With rear microscope base（12）, the front group of lens barrel（3）Front microscope base is provided with vivo（4）；Along light in the optical system of the camera lens
From left to right incident direction be respectively provided with focal power be front group of negative A, focal power be rear group of positive B and iris C, described before
The front gluing unit that group A is touched by negative selenodont lens A-1, biconcave lens A-2 and biconvex lens A-3 is constituted, and the rear group B is by double
Gluing unit, biconvex lens B- after convex lens B-1, negative selenodont lens B-2, biconvex lens B-3 and the glued composition of biconcave lens B-4
5th, biconvex lens B-6；Front group of A is located at front microscope base（4）In vivo, group B is located at rear microscope base afterwards（12）In vivo.
Further, the airspace between above-mentioned front group of A and rear group B is：20.653 ~ 2.3mm, bears the moon in described front group
Airspace between tooth form lens A-1 and front gluing unit is：3.354mm, in the front group of A before between gluing unit and light bar C
Airspace be:12.045 ~ 1.88mm, the airspace in the rear group B between light bar C and biconvex lens B-1 is：
Airspace between 6.959 ~ 0.42mm, biconvex lens B-1 and negative selenodont lens B-2 is 1.010mm, bears selenodont lens
Airspace between B-2 and rear gluing unit is：0.925mm, the airspace between rear gluing unit and biconvex lens B-5 is：
Airspace between 1.632mm, biconvex lens B-5 and biconvex lens B-6 group is：0.342mm.
Further, above-mentioned lens focus：F '=2.8-12mm, relative aperture：D/f '=1/1.4, the angle of visual field：30-90 °,
Resolution ratio：3000000 pixels, light path overall length：50.7mm, is suitable for spectral line scope：400nm～700nm, day and night confocal.
High-resolution synchronization focusing camera lens control method of the present invention, it is characterised in that：The camera lens includes body tube
（8）, be located at body tube（8）In vivo can synchronization-moving front cam（2）With rear cam（9）, institute's front cam（2）With rear cam（9）
Front group lens barrel is respectively equipped with vivo（3）With rear microscope base（12）, the front group of lens barrel（3）Front microscope base is provided with vivo（4）；The camera lens
Optical system in along light from left to right incident direction be respectively provided with focal power be front group of negative A, focal power be rear group of positive B
And iris C, the front gluing unit that the front group of A is touched by negative selenodont lens A-1, biconcave lens A-2 and biconvex lens A-3
Constitute, the rear group B is made up of biconvex lens B-1, negative selenodont lens B-2, biconvex lens B-3 and biconcave lens B-4 gluing
Gluing unit, biconvex lens B-5, biconvex lens B-6 afterwards；Front group of A is located at front microscope base（4）In vivo, group B is located at rear microscope base afterwards（12）Body
Interior；During control, as long as the driving of stepper motor, to allow front group of lens barrel and rear microscope base to move axially along camera lens, with whole focusing.
Advantages of the present invention：
1. the reasonable distribution focal power of front group and rear group in the optical texture of the present invention.In rear group, three-chip type is tied
3rd eyeglass of structure is changed to cemented doublet group, makes camera lens reach the short performance of object lens of large relative aperture, wide-angle, structure length and refers to
Mark.
2., by the optical glass material of forward and backward two groups 9 seven groups of reasonable selection, high index of refraction, low dispersion are selected as far as possible
Optical glass material.By area of computer aided optical design and optimization, correct the various aberrations of optical lens perfectly, make
The mtf value of camera lens makes the high resolution of camera lens in 200lp/mm., adapts to the requirement of 3,000,000 pixel high definition videos shooting.
3. the angle of visual field of this camera lens is larger.With respect to old structure, the angle of visual field has more preferable optimization.Asterism figure also compares
Ideal, all within 3.5 um, energy comparison is concentrated, and has reached high-resolution requirement.
4. this camera lens passes through design optimization, and close-shot is away from up to 0.3m.With respect to common zoom lens can closer to
Blur-free imaging is realized in object distance, and this is also a big advantage of time product.
Description of the drawings：
Fig. 1 is the index path of the present invention；
Fig. 2 is the machine drawing of the present invention；
Wherein 1, fixed aperture, 2, front cam, 3, front group of lens barrel, 4, front microscope base, 5, bear selenodont lens A-1,6, concave-concave
Lens A-2,7, biconvex lens A-3,8, body tube, 9, rear cam, 11, reduction box, 12, rear microscope base, 13, spacer ring, 14, biconvex
Lens B-6,15, biconvex lens B-5,16, biconcave lens B-4,17, biconvex lens B-3,18, bear selenodont lens B-2,19, double
Convex lens B-1,20, outer cover.
Specific embodiment：
High-resolution synchronization focusing camera camera lens of the present invention, it is characterised in that：Including body tube（8）, be located at body tube（8）
In vivo can synchronization-moving front cam（2）With rear cam（9）, institute's front cam（2）With rear cam（9）Front group mirror is respectively equipped with vivo
Cylinder（3）With rear microscope base（12）, the front group of lens barrel（3）Front microscope base is provided with vivo（4）；Along light in the optical system of the camera lens
From left to right incident direction be respectively provided with focal power be front group of negative A, focal power be rear group of positive B and iris C, described before
The front gluing unit that group A is touched by negative selenodont lens A-1, biconcave lens A-2 and biconvex lens A-3 is constituted, and the rear group B is by double
Gluing unit, biconvex lens B- after convex lens B-1, negative selenodont lens B-2, biconvex lens B-3 and the glued composition of biconcave lens B-4
5th, biconvex lens B-6；Front group of A is located at front microscope base（4）In vivo, group B is located at rear microscope base afterwards（12）In vivo.Original in three-chip type structure
The 3rd eyeglass is changed to cemented doublet group in type, so that rear group of focal power is shared, improves the relative aperture of camera lens.Utilize
The refractive index of the positive and negative eyeglass of gluing unit and the difference of dispersion, the aberration of corrective lens, make resolution of lens up to 3,000,000,1/3 "
Horizontal market angle reaches 90 °, distortion 14%.
Further, the airspace between above-mentioned front group of A and rear group B is：20.653 ~ 2.3mm, bears the moon in described front group
Airspace between tooth form lens A-1 and front gluing unit is：3.354mm, in the front group of A before between gluing unit and light bar C
Airspace be:12.045 ~ 1.88mm, the airspace in the rear group B between light bar C and biconvex lens B-1 is：
Airspace between 6.959 ~ 0.42mm, biconvex lens B-1 and negative selenodont lens B-2 is 1.010mm, bears selenodont lens
Airspace between B-2 and rear gluing unit is：0.925mm, the airspace between rear gluing unit and biconvex lens B-5 is：
Airspace between 1.632mm, biconvex lens B-5 and biconvex lens B-6 group is：0.342mm.
Further, above-mentioned lens focus：F '=2.8-12mm, relative aperture：D/f '=1/1.4, the angle of visual field：30-90 °,
Resolution ratio：3000000 pixels, light path overall length：50.7mm, is suitable for spectral line scope：400nm～700nm, day and night confocal.
Design of Mechanical Structure of the present invention as shown in Fig. 2 using high-precision mold be molded plastic structure part, wherein front group mirror
Seat（4）Equipped with front group of three eyeglasses（A-1、A-2、A-3）, organize microscope base afterwards（12）Equipped with 6（B-1、B-2、B-3、B-4、B-5、B-
6）And the spacer ring between B-5 and B-6, by high-precision structural member, it is ensured that the coaxial and the air gap between eyeglass, utilize
Stability heat-flash process of smelting ensures Assembly stability.
Body tube（8）, front cam（2）, rear cam（9）Collectively form stable high accuracy to coordinate, forward and backward cam structure band
There is guide groove, by the connection action of forward and backward cam, it is ensured that front group, rear group moves according to designed distance, realize synchronous focusing
Function.
For increasing structural stability, outer cover outside cam, is set up（20）, by reduction box（11）Cam rotation before and after driving
Long-range zoom is carried out, realizes synchronous focusing.
Outer cover（20）With 14 interface of standard Φ, burnt, perfection after client's regulating flange can be facilitated by adjusting dress seat height degree
Docking institute organic type.
Fixed aperture（1）The apolegamy upgrading part such as auto iris, infrared switch can be replaced by according to client's needs, real
The bigger range of application of existing product, gives client various Sexual behavior mode.
High-resolution synchronization focusing camera lens control method of the present invention, the camera lens include body tube（8）, be located at primary mirror
Cylinder（8）In vivo can synchronization-moving front cam（2）With rear cam（9）, institute's front cam（2）With rear cam（9）It is respectively equipped with vivo
Front group of lens barrel（3）With rear microscope base（12）, the front group of lens barrel（3）Front microscope base is provided with vivo（4）；In the optical system of the camera lens
Along light from left to right incident direction be respectively provided with focal power be front group of negative A, focal power be rear group of positive B and iris C,
The front gluing unit that the front group of A is touched by negative selenodont lens A-1, biconcave lens A-2 and biconvex lens A-3 is constituted, described after
Group B by biconvex lens B-1, bear selenodont lens B-2, biconvex lens B-3 and biconcave lens B-4 gluing and constitute rear gluing unit, double
Convex lens B-5, biconvex lens B-6；Front group of A is located at front microscope base（4）In vivo, group B is located at rear microscope base afterwards（12）In vivo；During control,
As long as the driving of stepper motor, to allow front group of lens barrel and rear microscope base to move axially along camera lens, with whole focusing.
Advantages of the present invention：
1. the reasonable distribution focal power of front group and rear group in the optical texture of the present invention.In rear group, three-chip type is tied
3rd eyeglass of structure is changed to cemented doublet group, makes camera lens reach the short performance of object lens of large relative aperture, wide-angle, structure length and refers to
Mark.
2., by the optical glass material of forward and backward two groups 9 seven groups of reasonable selection, high index of refraction, low dispersion are selected as far as possible
Optical glass material.By area of computer aided optical design and optimization, correct the various aberrations of optical lens perfectly, make
The mtf value of camera lens makes the high resolution of camera lens in 200lp/mm., adapts to the requirement of 3,000,000 pixel high definition videos shooting.
3. the angle of visual field of this camera lens is larger.With respect to old structure, the angle of visual field has more preferable optimization.Asterism figure also compares
Ideal, all within 3.5 um, energy comparison is concentrated, and has reached high-resolution requirement.
4. this camera lens passes through design optimization, and close-shot is away from up to 0.3m.With respect to common zoom lens can closer to
Blur-free imaging is realized in object distance, and this is also a big advantage of time product.
The foregoing is only presently preferred embodiments of the present invention, all impartial changes that is done according to scope of the present invention patent with
Modification, should all belong to the covering scope of the present invention.
Claims (3)
1. a kind of high-resolution synchronization focusing camera camera lens, it is characterised in that：Including body tube（8）, be located at body tube（8）In vivo
Can synchronization-moving front cam（2）With rear cam（9）, institute's front cam（2）With rear cam（9）Front group lens barrel is respectively equipped with vivo
（3）With rear microscope base（12）, the front group of lens barrel（3）Front microscope base is provided with vivo（4）；In the optical system of the camera lens along light certainly
From left to right incident direction be respectively provided with focal power be front group of negative A, focal power be rear group of positive B and iris C, described front group
The front gluing unit that A is touched by negative selenodont lens A-1, biconcave lens A-2 and biconvex lens A-3 is constituted, and the rear group B is by biconvex
Lens B-1, bear that selenodont lens B-2, biconvex lens B-3 and biconcave lens B-4 are glued and constitute after gluing unit, biconvex lens B-5,
Biconvex lens B-6；Front group of A is located at front microscope base（4）In vivo, group B is located at rear microscope base afterwards（12）In vivo；The front group of A and rear group of B it
Between airspace be：20.653 ~ 2.3mm, bears the airspace between selenodont lens A-1 and front gluing unit in described front group
It is：3.354mm, in the front group of A, front airspace between gluing unit and light bar C is:12.045 ~ 1.88mm, the rear group B
Airspace between middle light bar C and biconvex lens B-1 is：6.959 ~ 0.42mm, biconvex lens B-1 and negative selenodont lens B-
Airspace between 2 is 1.010mm, and negative airspace between selenodont lens B-2 and rear gluing unit is：0.925mm, after
Airspace between gluing unit and biconvex lens B-5 is：Between 1.632mm, biconvex lens B-5 and biconvex lens B-6 group
Airspace is：0.342mm.
2. the synchronous focusing camera camera lens of high-resolution according to claim 1, it is characterised in that：The lens focus：
F '=2.8-12mm, relative aperture：D/f '=1/1.4, the angle of visual field：30-90 °, resolution ratio：3000000 pixels, light path overall length：
50.7mm, is suitable for spectral line scope：400nm～700nm, day and night confocal.
3. a kind of high-resolution synchronization focusing camera lens control method, it is characterised in that：The camera lens includes body tube（8）、
It is located at body tube（8）In vivo can synchronization-moving front cam（2）With rear cam（9）, institute's front cam（2）With rear cam（9）In vivo
It is respectively equipped with front group of lens barrel（3）With rear microscope base（12）, the front group of lens barrel（3）Front microscope base is provided with vivo（4）；The light of the camera lens
In system along light from left to right incident direction be respectively provided with focal power be front group of negative A, focal power be rear group of positive B and can
Become light bar C, the front gluing unit structure that the front group of A is touched by negative selenodont lens A-1, biconcave lens A-2 and biconvex lens A-3
Become, after the rear group B is made up of biconvex lens B-1, negative selenodont lens B-2, biconvex lens B-3 and biconcave lens B-4 gluing
Gluing unit, biconvex lens B-5, biconvex lens B-6；Front group of A is located at front microscope base（4）In vivo, group B is located at rear microscope base afterwards（12）Body
Interior, the airspace between the front group of A and rear group B is：20.653 ~ 2.3mm, bear in described front group selenodont lens A-1 with
Airspace between front gluing unit is：3.354mm, in the front group of A, front airspace between gluing unit and light bar C is:
12.045 ~ 1.88mm, the airspace in the rear group B between light bar C and biconvex lens B-1 is：6.959 ~ 0.42mm, biconvex
Airspace between lens B-1 and negative selenodont lens B-2 is 1.010mm, bears between selenodont lens B-2 and rear gluing unit
Airspace be：0.925mm, the airspace between rear gluing unit and biconvex lens B-5 is：1.632mm, biconvex lens B-
Airspace between 5 and biconvex lens B-6 group is：0.342mm；During control, as long as the driving of stepper motor, to allow front group of mirror
Cylinder and rear microscope base are moved axially along camera lens, with whole focusing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410783375.XA CN104459931B (en) | 2014-12-18 | 2014-12-18 | High-resolution synchronization focusing camera camera lens and its control method |
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| CN201410783375.XA CN104459931B (en) | 2014-12-18 | 2014-12-18 | High-resolution synchronization focusing camera camera lens and its control method |
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| CN104459931A CN104459931A (en) | 2015-03-25 |
| CN104459931B true CN104459931B (en) | 2017-03-08 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105259646B (en) * | 2015-11-06 | 2017-12-22 | 福建福光股份有限公司 | 2.8 8mm miniature zoom lens |
| CN109283651B (en) * | 2018-12-12 | 2021-12-14 | 广东奥普特科技股份有限公司 | Small-size high-resolution machine vision lens structure |
| CN110346900A (en) * | 2019-06-28 | 2019-10-18 | 福建福光股份有限公司 | A kind of 2 times of high definition zoom glass modeling camera lenses of compact type and its imaging method |
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| CN201322818Y (en) * | 2008-12-15 | 2009-10-07 | 福建福光数码科技有限公司 | Synchronous focusing lens |
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| CN103635856A (en) * | 2011-06-29 | 2014-03-12 | 奥林巴斯映像株式会社 | Camera device, replacement lens device, camera main body, and focus control method |
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| JP2000137163A (en) * | 1998-11-04 | 2000-05-16 | Asahi Optical Co Ltd | Zoom lens system |
| JP2007193212A (en) * | 2006-01-20 | 2007-08-02 | Fujinon Corp | Zoom lens |
| CN201322818Y (en) * | 2008-12-15 | 2009-10-07 | 福建福光数码科技有限公司 | Synchronous focusing lens |
| CN201974569U (en) * | 2011-03-10 | 2011-09-14 | 厦门力鼎光电技术有限公司 | Adjustable synchronously-focusing lens |
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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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