CN205507200U - Big light ring camera lens of near -infrared - Google Patents
Big light ring camera lens of near -infrared Download PDFInfo
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- CN205507200U CN205507200U CN201620317328.0U CN201620317328U CN205507200U CN 205507200 U CN205507200 U CN 205507200U CN 201620317328 U CN201620317328 U CN 201620317328U CN 205507200 U CN205507200 U CN 205507200U
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- eyeglass
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- infrared
- large aperture
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Abstract
The utility model provides a big light ring camera lens of near -infrared belongs to the optical lens field, include three pieces of lenses of following the optical axis and arranging in proper order from the object space to the image space, wherein: first lens, the falcate that has negative optical power is described, and its convex surface adopts the aspheric surface towards the object plane, the second lens just has or negative optical power's falcate form, and its convex surface adopts the aspheric surface towards the image space, the third lens, the falcate that has positive refractive power is described, and its convex surface is towards the image space. The embodiment of the utility model provides a big light ring camera lens of near -infrared is through only adopting three pieces of lenses to shape through designing three pieces of lenses and distribute its focal power makes this kind of big light ring camera lens of near -infrared can realize the optical property of big light ring, big visual field, little distortion, and can realize small -size lightweight.
Description
Technical field
This utility model relates to field of optical lens, in particular to a kind of near-infrared large aperture camera lens.
Background technology
Along with laser lighting technology and three-dimensional identification, body feeling interaction, the development of Gesture Recognition, near-infrared light source is with near
The demand application of infrared optical lens is increasingly extensive.On market, existing near-infrared camera lenses is typically all common band IR day and night type
Camera lens, and specialty is considerably less for the camera lens of near infrared imaging.Common lens for monitoring exists that visual field is little, aperture is little, abnormal
The shortcomings such as change is big, it is impossible to fully meet the demand of the technology such as day by day popular three-dimensional identification, body feeling interaction, therefore, be badly in need of a kind of
Large aperture, big visual field, little distortion, the near-infrared optical camera lens of miniaturization.
Utility model content
The purpose of this utility model is to provide a kind of near-infrared large aperture camera lens, its be capable of large aperture, big visual field,
The optical property of little distortion, and camera lens achieves miniaturization.
Embodiment of the present utility model is achieved in that
A kind of near-infrared large aperture camera lens, including the three pieces of eyeglasses being arranged in order from the object side to the image side along optical axis, wherein:
First eyeglass, has the meniscus shape of negative power, and it uses aspheric surface convex surface facing object plane；
Second eyeglass, has the meniscus shape of plus or minus focal power, and it uses aspheric surface convex surface facing image space；
3rd eyeglass, has the meniscus shape of positive light coke, and it is convex surface facing image space.
In this utility model preferred embodiment, the focal length of above-mentioned first eyeglass is f1, and the focal length of the second eyeglass is f2,
The focal length of the 3rd eyeglass is f3, and it meets relationship below:
-15<f1<-2；3<f2<12；6<f3<16.
In this utility model preferred embodiment, above-mentioned first eyeglass and the second eyeglass are glass lens, the 3rd mirror
Sheet is glass lens.
In this utility model preferred embodiment, above-mentioned near-infrared large aperture camera lens also includes that light billows, light billows are positioned at
Between one eyeglass and the second eyeglass.
In this utility model preferred embodiment, above-mentioned first eyeglass, the second eyeglass and the position two of the 3rd eyeglass
Two are relatively fixed.
The near-infrared large aperture camera lens that this utility model embodiment provides provides the benefit that: this utility model embodiment carries
The near-infrared large aperture camera lens of confession passes through only with three pieces of eyeglasses, and by designing the shape of three pieces of eyeglasses and distributing its light
Focal power so that this near-infrared large aperture camera lens is capable of large aperture, big visual field, the optical property of little distortion, and can
Achieve miniaturization.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme of this utility model embodiment, will use required in embodiment below
Accompanying drawing be briefly described, it will be appreciated that the following drawings illustrate only some embodiment of the present utility model, the most should be by
Regard the restriction to scope as, for those of ordinary skill in the art, on the premise of not paying creative work, also may be used
To obtain other relevant accompanying drawings according to these accompanying drawings.
The structural representation of the near-infrared large aperture camera lens that Fig. 1 provides for this utility model embodiment；
The near-infrared large aperture camera lens that Fig. 2 this utility model embodiment provides relative illumination curve chart at 25 DEG C；
Near-infrared large aperture camera lens MTF of full filed at 25 DEG C that Fig. 3 this utility model embodiment provides
(Modulation Transfer Function modulation transfer function (MTF)) curve chart；
Near-infrared large aperture camera lens MTF curve figure of full filed at 0 DEG C that Fig. 4 this utility model embodiment provides；
Near-infrared large aperture camera lens MTF curve figure of full filed at 50 DEG C that Fig. 5 this utility model embodiment provides.
Figure acceptance of the bid note is respectively as follows:
Near-infrared large aperture camera lens 10；First eyeglass 100；Second eyeglass 200；3rd eyeglass 300；Light billows 400；Chip is protected
Protect glass 500.
Detailed description of the invention
For making the purpose of this utility model embodiment, technical scheme and advantage clearer, new below in conjunction with this practicality
Accompanying drawing in type embodiment, is clearly and completely described the technical scheme in this utility model embodiment, it is clear that retouched
The embodiment stated is a part of embodiment of this utility model rather than whole embodiments.Generally described in the accompanying drawing herein and
The assembly of this utility model embodiment illustrated can be arranged with various different configurations and design.
Therefore, below the detailed description of the embodiment of the present utility model provided in the accompanying drawings is not intended to limit requirement
The scope of the present utility model of protection, but it is merely representative of selected embodiment of the present utility model.Based in this utility model
Embodiment, the every other embodiment that those of ordinary skill in the art are obtained under not making creative work premise, all
Belong to the scope of this utility model protection.
It should also be noted that similar label and letter represent similar terms, therefore, the most a certain Xiang Yi in following accompanying drawing
Individual accompanying drawing is defined, then need not it be defined further and explains in accompanying drawing subsequently.
In description of the present utility model, it is to be understood that term " on ", D score, " interior ", the orientation of the instruction such as " outward "
Or position relationship is based on orientation shown in the drawings or position relationship, or usually put when this utility model product uses
Orientation or position relationship, or the orientation that usually understands of those skilled in the art or position relationship, be for only for ease of description
This utility model and simplification describe rather than indicate or imply that the equipment of indication or element must have specific orientation, Yi Te
Fixed azimuth configuration and operation, therefore it is not intended that to restriction of the present utility model.
In description of the present utility model, in addition it is also necessary to explanation, unless otherwise clearly defined and limited, term " sets
Put ", " connection " should be interpreted broadly, connect for example, it may be fixing, it is also possible to be to removably connect, or be integrally connected；Can
To be mechanical connection, it is also possible to be electrical connection；Can be to be joined directly together, it is also possible to be indirectly connected to by intermediary, Ke Yishi
The connection of two element internals.For the ordinary skill in the art, can understand that above-mentioned term is at this with concrete condition
Concrete meaning in utility model.
Embodiment
Refer to Fig. 1, present embodiments provide a kind of near-infrared large aperture camera lens 10, this near-infrared large aperture camera lens 10
Including the three pieces of eyeglasses being arranged in order from the object side to the image side along optical axis, wherein:
First eyeglass 100, has the meniscus shape of negative power, and it uses aspheric surface convex surface facing object plane.
Second eyeglass 200, has the meniscus shape of plus or minus focal power, and it uses aspheric surface convex surface facing image space.
3rd eyeglass 300, has the meniscus shape of positive light coke, and it is convex surface facing image space.
On the basis of said structure, further, the first eyeglass 100 and the second eyeglass 200 are glass lens, and the 3rd
Eyeglass 300 is glass lens.By using glass to mould the structure of mixing, athermal can be overcome.
It addition, this near-infrared large aperture camera lens 10 also includes that light billows 400, light billows 400 are positioned at the first eyeglass 100 and second
Between eyeglass 200.The chief ray incident angle of Integrated lens can be reduced, improve overall quality of optical imaging.3rd eyeglass 300
And between image planes, it is provided with a chip protection glass 500.
The position of first eyeglass the 100, second eyeglass 200 and the 3rd eyeglass 300 is relatively fixed two-by-two.It is to say, it is each
The position of eyeglass is fixing, and each eyeglass is irremovable, and the spacing between adjacent two eyeglasses is fixing.
It addition, the focal length of the first eyeglass 100 is f1, the focal length of the second eyeglass 200 is f2, and the focal length of the 3rd eyeglass 300 is
F3, it meets relationship below:
-15<f1<-2；3<f2<12；6<f3<16.
The structure of the near-infrared large aperture camera lens 10 provided the present embodiment below by way of concrete parameter value is made specifically
Bright:
Specifically, the focal length of each eyeglass is as follows:
F1=-8.47；F2=6.97；F3=10.85；F=3.37.
Wherein, f is total focal length of near-infrared large aperture camera lens 10.
Along optical axis parallel from thing side by all parts number consecutively, the minute surface of the first eyeglass 100 is S1, S2, light billows 400
Face is S3, and the minute surface of the second eyeglass 200 is S4, S5, and the minute surface of the 3rd eyeglass 300 is S6, S7, the face of chip protection glass 500
For S8, S9, image planes are S10.
It addition, what table 1, table 2 listed is the relevant parameter of eyeglass in specific embodiment, including each eyeglass face, surface type,
Radius of curvature, the thickness of the most each eyeglass, material, effective diameter and circular cone coefficient.
Systematic parameter: 1/3 ", aperture 1.0,90 ° of diagonal angle, visual field, sense wavelength 830～870nm.
Table one, the relevant parameter of the present embodiment
Table two, the asphericity coefficient of aspherical lens of the present embodiment
| Surface sequence number S | A4 | A6 | A8 | A10 | A12 |
| S1 | 2.506E-003 | -8.065E-005 | 2.689E-006 | -5.119E-008 | 4.813E-010 |
| S2 | 7.141E-003 | 2.591E-004 | -3.778E-005 | -1.318E-006 | 9.122E-007 |
| S4 | -7.113E-004 | -5.189E-005 | 4.212E-006 | -1.920E-008 | -1.010E-010 |
| S5 | -1.364E-004 | -4.036E-005 | 2.628E-006 | -1.192E-007 | 5.374E-009 |
It addition, Fig. 2 to Fig. 5 optical performance curve figure that to be the present embodiment corresponding.Fig. 2 for the present embodiment provide the reddest
The outer large aperture camera lens 10 relative illumination curve chart at 25 DEG C.Fig. 3 to Fig. 5 is respectively the big light of near-infrared that the present embodiment provides
Circle camera lens 10 is at 25 DEG C, 0 DEG C, the MTF curve figure of full filed at 50 DEG C.It can be seen that this reality from these characteristic pattern curve charts
The near-infrared large aperture camera lens 10 executing example has little distortion and good athermal performance.
In sum, refer to table one, table two and Fig. 1～Fig. 5, the near-infrared large aperture camera lens 10 that the present embodiment provides
By reducing the quantity of eyeglass, only with three pieces of eyeglasses, and by the shape of three pieces of eyeglasses of design, employing glass plastic mirror
The combination of sheet and utilize focal power to distribute so that this near-infrared large aperture camera lens 10 is capable of large aperture, big visual field, little
The optical property of distortion, and it has been capable of miniaturization.
These are only preferred embodiment of the present utility model, be not limited to this utility model, for this area
Technical staff for, this utility model can have various modifications and variations.It is all within spirit of the present utility model and principle,
Any modification, equivalent substitution and improvement etc. made, within should be included in protection domain of the present utility model.
Claims (5)
1. a near-infrared large aperture camera lens, it is characterised in that include the three pieces of mirrors being arranged in order from the object side to the image side along optical axis
Sheet, wherein:
First eyeglass, has the meniscus shape of negative power, and it uses aspheric surface convex surface facing object plane；
Second eyeglass, has the meniscus shape of plus or minus focal power, and it uses aspheric surface convex surface facing image space；
3rd eyeglass, has the meniscus shape of positive light coke, and it is convex surface facing image space.
Near-infrared large aperture camera lens the most according to claim 1, it is characterised in that the focal length of described first eyeglass is f1,
The focal length of described second eyeglass is f2, and the focal length of described 3rd eyeglass is f3, and it meets relationship below:
-15<f1<-2；3<f2<12；6<f3<16.
Near-infrared large aperture camera lens the most according to claim 1, it is characterised in that described first eyeglass and described second mirror
Sheet is glass lens, and described 3rd eyeglass is glass lens.
Near-infrared large aperture camera lens the most according to claim 1, it is characterised in that described near-infrared large aperture camera lens also wraps
Including light billows, described smooth billows are between described first eyeglass and described second eyeglass.
Near-infrared large aperture camera lens the most according to claim 1, it is characterised in that described first eyeglass, described second mirror
The position of sheet and described 3rd eyeglass is relatively fixed two-by-two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620317328.0U CN205507200U (en) | 2016-04-15 | 2016-04-15 | Big light ring camera lens of near -infrared |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620317328.0U CN205507200U (en) | 2016-04-15 | 2016-04-15 | Big light ring camera lens of near -infrared |
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| CN205507200U true CN205507200U (en) | 2016-08-24 |
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| CN201620317328.0U Active CN205507200U (en) | 2016-04-15 | 2016-04-15 | Big light ring camera lens of near -infrared |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105717614A (en) * | 2016-04-15 | 2016-06-29 | 湖南拓视觉信息技术有限公司 | Near-infrared large-aperture lens |
| PL424906A1 (en) * | 2018-03-15 | 2019-09-23 | Dziekan Krzysztof Przedsiębiorstwo-Usługowo-Produkcyjno-Handlowe Dziekan | Suspension mechanism of a soil levelling tool |
| US10571655B2 (en) | 2016-10-21 | 2020-02-25 | Largan Precision Co., Ltd. | Micro imaging system, imaging apparatus and electronic device |
| CN111123489A (en) * | 2018-11-01 | 2020-05-08 | 新巨科技股份有限公司 | Three-piece thin imaging lens group |
| US11106009B2 (en) | 2018-12-03 | 2021-08-31 | Largan Precision Co., Ltd. | Optical imaging lens assembly, image capturing unit and electronic device |
| US11385440B2 (en) | 2019-04-10 | 2022-07-12 | Largan Precision Co., Ltd. | Optical photographing lens assembly, fingerprint identification module and electronic device |
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2016
- 2016-04-15 CN CN201620317328.0U patent/CN205507200U/en active Active
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105717614A (en) * | 2016-04-15 | 2016-06-29 | 湖南拓视觉信息技术有限公司 | Near-infrared large-aperture lens |
| CN105717614B (en) * | 2016-04-15 | 2019-01-25 | 湖南拓视觉信息技术有限公司 | Near-infrared large aperture camera lens |
| US11249281B2 (en) | 2016-10-21 | 2022-02-15 | Largan Precision Co., Ltd. | Micro imaging system, imaging apparatus and electronic device |
| US10571655B2 (en) | 2016-10-21 | 2020-02-25 | Largan Precision Co., Ltd. | Micro imaging system, imaging apparatus and electronic device |
| CN111239980A (en) * | 2016-10-21 | 2020-06-05 | 大立光电股份有限公司 | Miniature image capturing system, image capturing device and electronic device |
| CN111239980B (en) * | 2016-10-21 | 2022-03-29 | 大立光电股份有限公司 | Miniature image capturing system, image capturing device and electronic device |
| PL424906A1 (en) * | 2018-03-15 | 2019-09-23 | Dziekan Krzysztof Przedsiębiorstwo-Usługowo-Produkcyjno-Handlowe Dziekan | Suspension mechanism of a soil levelling tool |
| CN111123489A (en) * | 2018-11-01 | 2020-05-08 | 新巨科技股份有限公司 | Three-piece thin imaging lens group |
| CN111123489B (en) * | 2018-11-01 | 2021-11-16 | 新巨科技股份有限公司 | Three-piece thin imaging lens group |
| US11106009B2 (en) | 2018-12-03 | 2021-08-31 | Largan Precision Co., Ltd. | Optical imaging lens assembly, image capturing unit and electronic device |
| CN113589499A (en) * | 2018-12-03 | 2021-11-02 | 大立光电股份有限公司 | Optical image capturing lens assembly and electronic device |
| CN113589499B (en) * | 2018-12-03 | 2022-11-15 | 大立光电股份有限公司 | Optical image capturing lens assembly and electronic device |
| US11668906B2 (en) | 2018-12-03 | 2023-06-06 | Largan Precision Co., Ltd. | Optical imaging lens assembly, image capturing unit and electronic device |
| US11385440B2 (en) | 2019-04-10 | 2022-07-12 | Largan Precision Co., Ltd. | Optical photographing lens assembly, fingerprint identification module and electronic device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180706 Address after: No. 108, Yong Yong Road, Qing Cun town, Fengxian District, Shanghai Patentee after: Shanghai Rong special equipment Co., Ltd. Address before: 410205 A645, room 39, Changsha central software park headquarters, No. 39, Jian Shan Road, hi tech Development Zone, Hunan. Patentee before: HUNAN VISUALTOURING INFORMATION TECHNOLOGY CO., LTD. |