CN106908939A - A kind of smart home high-pixel wide-angle camera lens - Google Patents
A kind of smart home high-pixel wide-angle camera lens Download PDFInfo
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- CN106908939A CN106908939A CN201710308234.6A CN201710308234A CN106908939A CN 106908939 A CN106908939 A CN 106908939A CN 201710308234 A CN201710308234 A CN 201710308234A CN 106908939 A CN106908939 A CN 106908939A
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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
- G02B13/06—Panoramic objectives; So-called "sky lenses" including panoramic objectives having reflecting surfaces
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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
- G02B13/0015—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design
- G02B13/005—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having spherical lenses only
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- Optics & Photonics (AREA)
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Abstract
The invention discloses a kind of smart home high-pixel wide-angle camera lens, including optical filter, the first lens group, the second lens group；First lens group is made up of a lens and No. two lens；Number lens are with negative power and convex surface facing the meniscus lens of object plane；No. two lens are the biconvex lens with positive light coke；Second lens group is made up of No. three lens, No. four lens and No. five lens；No. three lens are the biconvex lens with positive light coke；No. four lens and No. five lens are the mutual balsaming lens for bonding；Number lens, No. two lens, No. three lens, No. four lens, No. five lens are sequentially coaxially arranged between object plane and image planes；Optical filter is arranged at No. five between lens and image planes.Five spheric glass lens of the invention, it is possible to achieve to diagonal 160 degree of maximum angle of taking pictures, have the advantages that the angle of visual field is big, high resolution, reduce shooting blind angle amount as far as possible again in the case where image brilliance is ensured, it is adaptable to smart home high-pixel wide-angle camera lens.
Description
Technical field
The present invention relates to a kind of wide-angle lens, more particularly to a kind of smart home high-pixel wide-angle camera lens, belong to optics
Technical field of imaging.
Background technology
Smart home be with house as platform, using comprehensive wiring technology, the network communications technology, security precautions technology, from
Dynamic control technology, audio frequency and video technology are integrated by the relevant facility of life staying idle at home, build efficient housing facilities and family's schedule thing
The management system of business, is conducive to being lifted security, convenience, comfortableness, the artistry of household, and realizes the inhabitation of environmental protection and energy saving
Environment.Because smart home is related to many pattern collecting devices such as audio ＆ video equipment, safety-protection system, high definition camera lens to be adopted as pattern
The important electronic component of collection plays very important effect in the structure of smart home.Existing optical lens is general on the market
Store-through the angle of visual field it is less than normal, resolution ratio is relatively low, size is also not big enough, shoot when there are problems that it is many, so as to cause
Image is partially dark when shooting, inclined paste, it is difficult to reach effective using effect.
The content of the invention
In order to solve the weak point existing for above-mentioned technology, the invention provides a kind of smart home high-pixel wide-angle
Camera lens.
In order to solve the above technical problems, the technical solution adopted by the present invention is：A kind of smart home high-pixel wide-angle
Camera lens, including optical filter, it also includes the first lens group, the second lens group；First lens group is by a lens and No. two lens
Composition；Number lens are with negative power and convex surface facing the meniscus lens of object plane；No. two lens are with positive light coke
Biconvex lens；Second lens group is made up of No. three lens, No. four lens and No. five lens；No. three lens are with positive light coke
Biconvex lens；No. four lens and No. five lens are the mutual balsaming lens for bonding；
Number lens, No. two lens, No. three lens, No. four lens, No. five lens are sequentially coaxially arranged at object plane and image planes
Between；Optical filter is arranged at No. five between lens and image planes；
The focal length of the whole optical system of wide-angle lens is f, then the scope of the combined focal length f1-2 of the first lens group is 1.5
<|f1-2|/f<3.5；The scope of the combined focal length f3-5 of the second lens group is 0.5<|f3-5|/f<2.5；
A number scope of the focal length f1 of lens is 1.5<|f1|/f<1.7；No. two scopes of the focal length f2 of lens are 9.3<|
f2|/f<9.6；No. three scopes of the focal length f3 of lens are 3.0<|f3|/f<3.2；The glue that No. four lens and No. five lens are bonded into
The scope for closing the focal length f4-5 of lens group is 4.2<|f4-5|/f<4.4.
Protective glass is provided between optical filter and image planes.
Diaphragm is provided between No. two lens and No. three lens.
Number lens, No. two lens, No. three lens, No. four lens, No. five lens are glass spheric glass.
Relation between the length TTL of wide-angle lens and whole optical system focal length value f is TTL/f≤9.2.
The length TTL of wide-angle lens is less than or equal to 15.1mm.
A number refractive index Nd for lens is 1.7<Nd<1.8, dispersive power Vd are 48<Vd<50；
No. two refractive index Nd of lens are 1.9<Nd<2.0, dispersive power Vd are 19<Vd<21；
No. three refractive index Nd of lens are 1.8<Nd<1.9, dispersive power Vd are 40<Vd<42；
No. four refractive index Nd of lens are 1.7<Nd<1.9, dispersive power Vd are 52<Vd<54；
No. five refractive index Nd of lens are 1.9<Nd<2.0, dispersive power Vd are 19<Vd<21.
Five spheric glass lens of the invention, it is possible to achieve to diagonal 160 degree of maximum angle of taking pictures, with the angle of visual field
Greatly, the advantage of high resolution, shooting blind angle amount is reduced in the case where image brilliance is ensured as far as possible again, is particularly suitable for use as intelligence
Energy household high-pixel wide-angle camera lens is used；Simple and compact for structure, lens numbers of the invention are few, are conducive to the miniaturization of camera lens
Design, so as to reduce production cost.
Brief description of the drawings
Fig. 1 is that system of the invention constitutes structure chart.
Fig. 2 is the path profile that light enters from embodiment one.
Fig. 3 is the MTF resolving curved line figures of embodiment one.
Fig. 4 is the defocusing curve figure of embodiment one.
Fig. 5 is the astigmatism curve map of embodiment one.
Fig. 6 is the optical distortion figure of embodiment one.
Fig. 7 is the point range figure of embodiment one.
In figure：1st, a lens；2nd, No. two lens；3rd, diaphragm；4th, No. three lens；5th, No. four lens；6th, No. five lens；7、
Optical filter；8th, protective glass；9th, image planes；10th, object plane.
Specific embodiment
The present invention is further detailed explanation with reference to the accompanying drawings and detailed description.
As shown in figure 1, the present invention from object plane 10 to image planes 9 sequentially coaxially include 1, No. two lens 2 of a lens, diaphragm 3,
No. three lens 4, four lens 5, five lens 6, optical filter 7, protective glass 8.Wherein, a lens 1 are with negative power
And convex surface facing the meniscus lens of object plane 10；No. two lens 2 are the biconvex lens with positive light coke；No. three lens 4 be with
The biconvex lens of positive light coke；No. four lens 5 and No. five lens 6 are the balsaming lens of the mutual bonding with positive light coke；
A number lens 1 and No. two lens 2 collectively form the first lens group, and the first lens group has the negative power can be with maximum
The angle of visual field receives ambient, and corrects part aberration；4, No. four lens 5 of No. three lens and No. five lens 6 collectively form second
Lens group, the second lens group has positive light coke, the light for receiving the first lens group, and by light collection to image plane
On；
The focal length of the whole optical system of wide-angle lens is expressed as f, the combined focal length of the first lens group is expressed as f1-2,
The combined focal length of the second lens group is expressed as f3-5；Then the first lens group, the scope of the combined focal length of the second lens group are followed successively by：
1)1.5<|f1-2|/f<3.5；
2)0.5<|f3-5|/f<2.5。
For above-mentioned condition 1), can limit the first lens group has negative power, and disperse function is played to light, is mainly used in
Receive the light of larger angle scope.When | f1-2 |/f is less than lower limit 1.5, the first lens group is needed with relatively small song
Rate radius, can increase the face subtended angle of eyeglass, be unfavorable for processing, and image distortion increase when can be imaged periphery；And work as |
F1-2 | when/f is more than the upper limit 3.5, the angle of visual field of system can be reduced, must so ensure to regard by increasing the effective diameter of eyeglass
Rink corner, so as to the size of camera lens can be increased, the Miniaturization Design theory with camera lens is runed counter to.
For above-mentioned condition 2), it is the biconvex lens with positive light coke that can limit the second lens group, is mainly used in passing through
Cross the light collection of the first lens group and balance aberration to image planes 9.When | f3-5 |/f is more than the upper limit 2.5, system can be increased
Senior aberration, makes the image quality of image poor；When | f3-5 |/f is less than lower limit 0.5, systematical distortion would become hard to correction, make into
As the brightness of surrounding image declines.
The focal length of a number lens 1, No. two lens, 2, No. three lens 4 is expressed as f1, f2, f3；No. four lens 5 and five
The focal length of the balsaming lens group that number lens 6 are bonded into is expressed as f4-5, then the focal range of each lens can be subdivided into again：
3)1.5<|f1|/f<1.7；
4)9.3<|f2|/f<9.6；
5)3.0<|f3|/f<3.2；
6)4.2<|f4-5|/f<4.4。
The diaphragm of this camera lens is arranged between the first lens group and the second lens group, to limit light by the first lens group
Luminous flux when the second lens group is entered.Optical filter 7 and protective glass 8 are provided between No. five lens 6 and image planes 9, can be with
The veiling glare outside design wave band is filtered, optimal imaging effect is realized.
All lens all use spherical design and glass material in this camera lens, with good aberration characteristic, while regarding
Rink corner is high, good imaging quality, and difficulty of processing and production cost can be reduced again, with important Practical significance.
A number refractive index Nd for lens 1 is 1.7<Nd<1.8, dispersive power Vd are 48<Vd<50；A number lens 1 are rolled over using high
The low chromatic dispersion material of rate is penetrated, the light at big visual angle can be effectively imported, reduces the bore of the first lens, ensureing wide-angle lens miniaturization
While improve wide-angle lens aberration；
No. two refractive index Nd of lens 2 are 1.9<Nd<2.0, dispersive power Vd are 19<Vd<21；No. two lens 2 are rolled over using high
Penetrate rate chromatic dispersion material high, can fast convergence by the light of the first camera lens, and compensate chromatic aberation；
No. three refractive index Nd of lens 4 are 1.8<Nd<1.9, dispersive power Vd are 40<Vd<42；No. three lens 4 are used
High-refractivity and low-dispersion material；
No. four refractive index Nd of lens 5 are 1.7<Nd<1.9, dispersive power Vd are 52<Vd<54；No. four lens 5 are used
High-refractivity and low-dispersion material；
No. five refractive index Nd of lens 6 are 1.9<Nd<2.0, dispersive power Vd are 19<Vd<21；No. five lens 6 are used
High index of refraction chromatic dispersion material high.
5, No. five positive and negative balsaming lens groups of lens 6 of No. four lens can mutually compensate for aberration, realize minimum aberration, while
Reduce spherical aberration.
Relation between the length TTL of wide-angle lens and whole optical system focal length value f is TTL/f≤9.2.
The length TTL of wide-angle lens is less than or equal to 15.1mm.
Optical property of the invention is described in further detail below by a specific embodiment.
Embodiment one：
The effective focal length f of camera lens is 1.65mm, and f-number FNO is 2.8, and the angle of visual field is 160 degree, optics overall length TTL=
15.1mm, specific optical parametric is shown in Table 1：
Table 1
| Surface title | Surface type | Subsequent corrosion | Thickness | Refractive index | Abbe number |
| A number lens | Sphere | 20.3244 | 0.971 | 1.77 | 49.62 |
| Sphere | 1.8792 | 1.419 | |||
| No. two lens | Sphere | 25.5912 | 2.781 | 1.92 | 20.88 |
| Sphere | -32.7262 | 0.742 | |||
| Diaphragm | Sphere | Infinitely | 0.1 | ||
| No. three lens | Sphere | 50.3449 | 3.501 | 1.84 | 41.97 |
| Sphere | -4.6784 | 0.1 | |||
| No. four lens | Sphere | 4.0911 | 1.653 | 1.71 | 53.94 |
| No. five lens | Sphere | -3.1246 | 0.921 | 1.92 | 20.88 |
| Sphere | -34.7449 | 1 | |||
| Optical filter | Sphere | Infinitely | 0.3 | 1.52 | 64.1 |
| Sphere | Infinitely | 0.1 | |||
| Protective glass | Sphere | Infinitely | 0.4 | 1.52 | 64.1 |
| Sphere | Infinitely | 1.0218 |
| f1-2 |/f=2.36 in the present embodiment, | f3-5 |/f=1.85, | f1 |/f=1.65, | f2 |/f=9.52, | f3
|/f=3.16, | f4-5 |/f=4.38.
Fig. 2 illustrates the path profile that light enters from the present embodiment.Below by specific experiment to optics of the invention
Performance is verified.
(1) the MTF resolving curved lines of the present embodiment are as shown in figure 3, wherein, abscissa represent line it is right/every millimeter (lp/mm)
Spatial frequency, ordinate represents mtf value.From figure 3, it can be seen that the present embodiment presented in the spatial frequency of 140lp/mm compared with
Good contrast, its comprehensive solution is higher as level, also implies that the definition of shooting picture is higher；And whole MTF declines are smoothed,
High and low frequency part can effectively be balanced.
(2) defocusing curve of the present embodiment is as shown in figure 4, wherein, abscissa represents defocus position (mm), and ordinate is represented
Mtf value under certain space frequency.It can be seen that MTF is carrying axle and off-axis part defocus well and synchronously, is showing
This camera lens specifically has preferable out of focus performance.
(3) the astigmatism curve of the present embodiment is as shown in figure 5, wherein, ASTIGMATIC FIELD CURVES represent that astigmatism is bent
Line, ANGLE represents angle, and FOCUS (MILLIMETERS) represents focusing (mm).It can be seen that the astigmatism of the present embodiment
Effective control has been obtained, optical distortion level can have to a certain extent been reacted.
(4) optical distortion (DISTORTION) figure of the present embodiment is as shown in fig. 6, when full spherical design is in full filed,
The maximum distortion of the present embodiment is only -60%, and distortion correction is good, it is adaptable to made as smart home high-pixel wide-angle camera lens
With.
(5) the present embodiment in the optical system point range figure of different visual fields (FIELD) as shown in fig. 7, in Fig. 7, under each visual field
Imaging point nearly all pooled a preferable point, show that the present embodiment has good imaging performance.
Above-mentioned implementation method is not limitation of the present invention, and the present invention is also not limited to the example above, this technology neck
Change, remodeling, addition or replacement that the technical staff in domain is made in the range of technical scheme, also belong to this hair
Bright protection domain.
Claims (7)
1. a kind of smart home high-pixel wide-angle camera lens, including optical filter (7), it is characterised in that：It also includes the first lens
Group, the second lens group；First lens group is made up of a lens (1) and No. two lens (2)；Number lens (1) be with
Negative power and convex surface facing the meniscus lens of object plane (10)；No. two lens (2) are the biconvex lens with positive light coke；
Second lens group is made up of No. three lens (4), No. four lens (5) and No. five lens (6)；No. three lens (4) are tool
There is the biconvex lens of positive light coke；No. four lens (5) and No. five lens (6) are the mutual balsaming lens for bonding；
A number lens (1), No. two lens (2), No. three lens (4), No. four lens (5), No. five lens (6) sequentially coaxially set
It is placed between object plane (10) and image planes (9)；The optical filter (7) is arranged between No. five lens (6) and image planes (9)；
The focal length of the whole optical system of the wide-angle lens is f, then the scope of the combined focal length f1-2 of the first lens group is 1.5
<|f1-2|/f<3.5；The scope of the combined focal length f3-5 of the second lens group is 0.5<|f3-5|/f<2.5；
The scope of the focal length f1 of a number lens (1) is 1.5<|f1|/f<1.7；The scope of No. two focal length f2 of lens (2) is
9.3<|f2|/f<9.6；No. three scopes of the focal length f3 of lens (4) are 3.0<|f3|/f<3.2；No. four lens (5) and No. five are thoroughly
The scope of the focal length f4-5 of the balsaming lens group that mirror (6) is bonded into is 4.2<|f4-5|/f<4.4.
2. smart home according to claim 1 high-pixel wide-angle camera lens, it is characterised in that：The optical filter (7) with
Protective glass (8) is provided between image planes (9).
3. smart home according to claim 1 high-pixel wide-angle camera lens, it is characterised in that：No. two lens (2)
Diaphragm (3) is provided with and No. three lens (4) between.
4. smart home according to claim 1 high-pixel wide-angle camera lens, it is characterised in that：A number lens (1),
No. two lens (2), No. three lens (4), No. four lens (5), No. five lens (6) are glass spheric glass.
5. smart home according to claim 1 high-pixel wide-angle camera lens, it is characterised in that：The length of the wide-angle lens
Relation between degree TTL and whole optical system focal length value f is TTL/f≤9.2.
6. smart home according to claim 5 high-pixel wide-angle camera lens, it is characterised in that：The length of the wide-angle lens
Degree TTL is less than or equal to 15.1mm.
7. the high-pixel wide-angle camera lens of the smart home according to claim 1 or 4, it is characterised in that：
The refractive index Nd of a number lens (1) is 1.7<Nd<1.8, dispersive power Vd are 48<Vd<50；
The refractive index Nd of No. two lens (2) is 1.9<Nd<2.0, dispersive power Vd are 19<Vd<21；
The refractive index Nd of No. three lens (4) is 1.8<Nd<1.9, dispersive power Vd are 40<Vd<42；
The refractive index Nd of No. four lens (5) is 1.7<Nd<1.9, dispersive power Vd are 52<Vd<54；
The refractive index Nd of No. five lens (6) is 1.9<Nd<2.0, dispersive power Vd are 19<Vd<21.
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| CN201710308234.6A CN106908939B (en) | 2017-05-04 | 2017-05-04 | High-pixel wide-angle lens for smart home |
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| CN106908939B CN106908939B (en) | 2022-04-08 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111913288A (en) * | 2020-07-27 | 2020-11-10 | 威海恩腾光电科技有限公司 | Small-size super wide angle high definition vehicle monitoring camera |
| CN111913287A (en) * | 2020-07-27 | 2020-11-10 | 威海恩腾光电科技有限公司 | Ultra-wide-angle high-definition vehicle-mounted monitoring lens and imaging method |
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| US20080055741A1 (en) * | 2006-09-06 | 2008-03-06 | Fujinon Corporation | Imaging lens and camera system including the same lens |
| CN102338923A (en) * | 2010-07-16 | 2012-02-01 | 大立光电股份有限公司 | Wide viewing angle camera lens |
| CN103926674A (en) * | 2013-01-11 | 2014-07-16 | 今国光学工业股份有限公司 | Miniaturized lens |
| CN206696512U (en) * | 2017-05-04 | 2017-12-01 | 威海嘉瑞光电科技股份有限公司 | A kind of smart home high-pixel wide-angle camera lens |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US20080055741A1 (en) * | 2006-09-06 | 2008-03-06 | Fujinon Corporation | Imaging lens and camera system including the same lens |
| CN102338923A (en) * | 2010-07-16 | 2012-02-01 | 大立光电股份有限公司 | Wide viewing angle camera lens |
| CN103926674A (en) * | 2013-01-11 | 2014-07-16 | 今国光学工业股份有限公司 | Miniaturized lens |
| CN206696512U (en) * | 2017-05-04 | 2017-12-01 | 威海嘉瑞光电科技股份有限公司 | A kind of smart home high-pixel wide-angle camera lens |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111913288A (en) * | 2020-07-27 | 2020-11-10 | 威海恩腾光电科技有限公司 | Small-size super wide angle high definition vehicle monitoring camera |
| CN111913287A (en) * | 2020-07-27 | 2020-11-10 | 威海恩腾光电科技有限公司 | Ultra-wide-angle high-definition vehicle-mounted monitoring lens and imaging method |
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| Publication number | Publication date |
|---|---|
| CN106908939B (en) | 2022-04-08 |
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Application publication date: 20170630 Assignee: Weihai enteng Photoelectric Technology Co.,Ltd. Assignor: WEIHAI JIARUI OPTOELECTRONIC TECHNOLOGY CO.,LTD. Contract record no.: X2022980015292 Denomination of invention: A high-pixel wide-angle lens for smart home Granted publication date: 20220408 License type: Common License Record date: 20220915 |