CN106154500B - Inexpensive big wide-angle high definition optical system and its camera lens of application - Google Patents
Inexpensive big wide-angle high definition optical system and its camera lens of application Download PDFInfo
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- CN106154500B CN106154500B CN201610761925.7A CN201610761925A CN106154500B CN 106154500 B CN106154500 B CN 106154500B CN 201610761925 A CN201610761925 A CN 201610761925A CN 106154500 B CN106154500 B CN 106154500B
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- lens
- optical system
- high definition
- big wide
- image planes
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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
- G02B13/002—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface
- G02B13/004—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface having four lenses
-
- 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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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
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Abstract
The embodiment of the invention discloses a kind of big wide-angle high definition optical systems of low cost, are included at least successively from object plane to image planes along optical axis：First lens, the second lens, the third lens and the 4th lens；The object plane side of first lens is plane, and image planes side is concave surface, and focal power is negative；The object plane side of second lens is convex surface, and image planes side is convex surface, and focal power is just；The object plane side of the third lens is plane, and image planes side is convex surface, and focal power is just；The object plane side of 4th lens is concave surface, and image planes side is convex surface, and focal power is negative.On the other hand, the embodiment of the present invention additionally provides a kind of camera lens.The embodiment of the present invention is mainly made of 4 pieces of lens applied to the occasion that smart home etc. need to be monitored day and night, and lens piece number is few, simple in structure, compared with same specification product, greatly reduces cost；With big wide-angle, large aperture, the day and night favorable optical performances such as confocal, and there is good high temperature imaging effect, the excellent performance of 2M pixel resolutions.
Description
Technical field：
The present invention relates to a kind of optical system and its camera lens of application, especially a kind of smart home etc. that is applied to needs day and night
Monitor the big wide-angle 1080P high definitions optical system of low cost of occasion and its camera lens of application.
Background technology：
Existing optical system or camera lens, the optical system or mirror of occasion need to day and night be monitored by being particularly applied to smart home etc.
Head, there are complicated, diagonal field of view angle is small, the higher defect of cost.
Invention content：
To overcome the problems, such as that existing optical system or lens construction are complicated, diagonal field of view angle is small, cost is higher, the present invention is real
It applies example and on the one hand provides a kind of big wide-angle high definition optical system of low cost.
Inexpensive big wide-angle high definition optical system, includes at least along optical axis from object plane to image planes successively：First lens, second
Lens, the third lens and the 4th lens；
The object plane side of first lens is plane, and image planes side is concave surface, and focal power is negative；
The object plane side of second lens is convex surface, and image planes side is convex surface, and focal power is just；
The object plane side of the third lens is plane, and image planes side is convex surface, and focal power is just；
The object plane side of 4th lens is concave surface, and image planes side is convex surface, and focal power is negative.
The present invention can be improved by following scheme：
The third lens and the mutually glued formation compound lens of the 4th lens, the focal length f34 of compound lens meet：15.52mm<
f34<45.75mm。
First lens are made of heavy-lanthanide flint or lanthanum flint glass material, focal length f1, Refractive Index of Material Nd1, material
Abbe constant Vd1 meets following condition：-4.179mm<f1<- 2.53mm, 1.77<Nd1<1.92 30<Vd1<50.
Second lens are made of heavy-lanthanide flint glass material or dense flint glass material, focal length f2, material refraction
Rate Nd2, material Abbe constant Vd2 meet following condition：3.396mm<f2<6.392mm 1.90<Nd2<2.05 16<Vd2<40.
The third lens are made of lanthanum crown flint glass material, and the 4th lens use heavy-lanthanide flint or dense flint glass
Material is made, and the material Abbe constant Vd3 of the third lens and the material Abbe constant Vd4 of the 4th lens meet：30<|Vd3-Vd4
|<45。
The material Abbe constant Vd1 of first lens and the material Abbe constant Vd4 of the 4th lens meet：20<|Vd1-Vd4
|。
The diaphragm of optical system is between the first lens and the second lens, close to the second lens side.
The optics overall length TTL of optical system meets：14mm<TTL<22mm.
Each lens of this optical system meet following condition：(1)-1.29<f/f1<-0.78；(2)0.51<f/f2<0.96；
(3)0.07<f/f34<0.21；Wherein, f is the focal length of entire optical system, and f1 is the focal length of the first lens, and f2 is the second lens
Focal length, f34 be the third lens and the 4th lens combined focal length.
On the other hand, the embodiment of the present invention additionally provides a kind of camera lens.
A kind of camera lens is equipped with the big wide-angle high definition optical system of low cost described above in camera lens.
The embodiment of the present invention is mainly made of 4 pieces of lens, thoroughly applied to the occasion that smart home etc. need to be monitored day and night
Mirror piece number is few, simple in structure, compared with same specification product, greatly reduces cost；It is combined with each other, is had using 4 pieces of different lens
150 ° big wide-angle, large aperture, 850nm IR wavelengths compensate the day and night favorable optical performances such as confocal, and have good high temperature
Imaging effect, the excellent performance of 2M pixel resolutions.
Description of the drawings：
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, other are can also be obtained according to these attached drawings
Attached drawing.
Fig. 1 is the optical system of the present invention or the structural schematic diagram of camera lens；
Fig. 2 is the transfer curve figure of optical system or the camera lens 120lp/mm under visible light conditions of the present invention；
Fig. 3 is the transfer curve figure of optical system or camera lens 120lp/mm under the conditions of 850nm is infrared of the present invention；
Fig. 4 is optical system or the camera lens curvature of field and the distortion figure under visible light conditions of the present invention；
Fig. 5 is the transfer curve figure of optical system or camera lens 120lp/mm under the conditions of 60 DEG C of the present invention.
Specific implementation mode：
In order to make the technical problems, technical solutions and beneficial effects solved by the present invention be more clearly understood, below in conjunction with
Accompanying drawings and embodiments, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only used
To explain the present invention, it is not intended to limit the present invention.
As shown in Figure 1, the big wide-angle high definition optical system of low cost, 6 included at least successively from object plane to image planes along optical axis：The
One lens 1, the second lens 2, the third lens 3 and the 4th lens 4.
The object plane side of first lens 1 is plane, and image planes side is concave surface, and focal power is negative；
The object plane side of second lens 2 is convex surface, and image planes side is convex surface, and focal power is just；
The object plane side of the third lens 3 is plane, and image planes side is convex surface, and focal power is just；
The object plane side of 4th lens 4 is concave surface, and image planes side is convex surface, and focal power is negative.
The embodiment of the present invention is mainly made of 4 pieces of lens, thoroughly applied to the occasion that smart home etc. need to be monitored day and night
Mirror piece number is few, simple in structure, compared with same specification product, greatly reduces cost；It is combined with each other, is had pair using 4 pieces of different lens
The 150 ° big wide-angle in angular direction, large aperture, 850nm IR wavelengths compensate the day and night favorable optical performances such as confocal, and with good
High temperature imaging effect, the excellent performance of 2M pixel resolutions.
Further, the third lens 3 and the mutually glued formation compound lens of the 4th lens 4, the focal length f34 of compound lens are full
Foot：15.52mm<f34<45.75mm.It is simple and compact for structure, it is small, it is ensured that good optical property.
Still further, compound lens also meets：Wherein,With Vd3 points
Not Wei the third lens 3 focal power and material Abbe constant,It is respectively the focal power and material Abbe of the 4th lens 4 with Vd4
Constant,For the focal power of compound lens.It can guarantee good optical property.
Further, the first lens 1 are made of heavy-lanthanide flint or lanthanum flint glass material, focal length f1, material folding
Penetrate rate Nd1, material Abbe constant Vd1 meets following condition：-4.179mm<f1<- 2.53mm, 1.77<Nd1<1.92 30<Vd1<
50.It is simple in structure, it is ensured that good optical property.
Further, the second lens 2 are made of heavy-lanthanide flint glass material or dense flint glass material, focal length
F2, Refractive Index of Material Nd2, material Abbe constant Vd2 meet following condition：3.396mm<f2<6.392mm 1.90<Nd2<
2.05 16<Vd2<40.It is simple in structure, it is ensured that good optical property.
Still further, the third lens 3 are made of lanthanum crown flint glass material, the 4th lens 4 are using using weight lanthanum fire
Stone or dense flint glass material are made, the material Abbe constant Vd3 of the third lens 3 and the material Abbe constant Vd4 of the 4th lens 4
Meet：30<|Vd3-Vd4|<45.It is simple in structure, it is ensured that good optical property.
Further, the material Abbe constant Vd4 of the material Abbe constant Vd1 of the first lens 1 and the 4th lens 4 is full
Foot：20<|Vd1-Vd4|.It is simple in structure, it is ensured that good optical property.
Further, the diaphragm 5 of optical system is between the first lens 1 and the second lens 2, close to the second lens 2
Side.
Still further, the optics overall length TTL of optical system meets：14mm<TTL<22mm.
Specifically, each lens of the optical system meet following condition：
(1)-1.29<f/f1<-0.78；
(2)0.51<f/f2<0.96；
(3)0.07<f/f34<0.21；
Wherein, f is the focal length of entire optical system, and f1 is the focal length of the first lens 1, and f2 is the focal length of the second lens 2,
F34 is the combined focal length of the third lens 3 and the 4th lens 4.It is simple in structure, it is ensured that good optical property.
Further, 1 to the 4th lens 4 of the first lens are glass lens, and translucency is good, it is ensured that good optics
Performance.
Specifically, in the present embodiment, the focal length f of this optical system is 3.25mm, and stop index FNo. is 2.0, diagonally
2 ω=150 ° of direction field angle, optics overall length TTL=18.01mm.Every basic parameter of this optical system is as shown in the table：
In upper table, along optical axis, 6, OBJ is object plane from object plane to image planes；S1, S2 correspond to two surfaces of the first lens 1；
STO is 5 position of diaphragm；S4, S5 correspond to two surfaces of the second lens 2；S6, S7 correspond to two of the third lens 3
Surface；S7, S8 correspond to two surfaces of the 4th lens 4；S9, S10 correspond to two surfaces of flat glass；IMA is image planes
6。
As can be seen that the optical system in the present embodiment has big wide-angle, large aperture, 850nm wavelength in from Fig. 2 to Fig. 5
Infrared light compensates day, night confocal favorable optical performance, and has good high temperature imaging effect, and 2M pixel resolutions etc. are excellent
Performance.
A kind of camera lens is equipped with the big wide-angle high definition optical system of low cost described above in camera lens.
It is as described above the one or more embodiments for combining particular content to provide, does not assert the specific reality of the present invention
It applies and is confined to these explanations.It is all approximate with method of the invention, structure etc., identical, or for present inventive concept under the premise of
Several technology deduction or replace are made, protection scope of the present invention is all should be considered as.
Claims (10)
1. inexpensive big wide-angle high definition optical system, includes at least along optical axis from object plane to image planes successively：First lens, second are thoroughly
Mirror, the third lens and the 4th lens；It is characterized in that,
The object plane side of first lens is plane, and image planes side is concave surface, and focal power is negative；
The object plane side of second lens is convex surface, and image planes side is convex surface, and focal power is just；
The object plane side of the third lens is plane, and image planes side is convex surface, and focal power is just；
The object plane side of 4th lens is concave surface, and image planes side is convex surface, and focal power is negative；
The third lens and the mutually glued formation compound lens of the 4th lens.
2. the big wide-angle high definition optical system of low cost according to claim 1, which is characterized in that the focal length of compound lens
F34 meets：15.52mm<f34<45.75mm.
3. the big wide-angle high definition optical system of low cost according to claim 1, which is characterized in that the focal length of the first lens
F1, Refractive Index of Material Nd1, material Abbe constant Vd1 meet following condition：-4.179mm<f1<- 2.53mm, 1.77<Nd1<
1.92 30<Vd1<50.
4. the big wide-angle high definition optical system of low cost according to claim 1, which is characterized in that the focal length of the second lens
F2, Refractive Index of Material Nd2, material Abbe constant Vd2 meet following condition：3.396mm<f2<6.392mm 1.90<Nd2<
2.05 16<Vd2<40.
5. the big wide-angle high definition optical system of low cost according to claim 1, which is characterized in that the third lens material Ah
The material Abbe constant Vd4 of shellfish constant Vd3 and the 4th lens meets：30<|Vd3-Vd4|<45.
6. the big wide-angle high definition optical system of low cost according to claim 1, which is characterized in that the first lens material Ah
The material Abbe constant Vd4 of shellfish constant Vd1 and the 4th lens meets：20<|Vd1-Vd4|.
7. the big wide-angle high definition optical system of low cost according to claim 1, which is characterized in that the diaphragm position of optical system
Between the first lens and the second lens, close to the second lens side.
8. the big wide-angle high definition optical system of low cost according to claim 1, which is characterized in that the optics of optical system is total
Long TTL meets：14mm<TTL<22mm.
9. the big wide-angle high definition optical system of low cost according to claim 1, which is characterized in that the optical system it is each
Mirror meets following condition：
(1)-1.29<f/f1<-0.78；
(2)0.51<f/f2<0.96；
(3)0.07<f/f34<0.21；
Wherein, f is the focal length of entire optical system, and f1 is the focal length of the first lens, and f2 is the focal length of the second lens, and f34 is group
Close the focal length of lens.
10. a kind of camera lens, which is characterized in that it is high to be equipped with the big wide-angle of claim 1-9 any one of them low costs in camera lens
Clear optical system.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610761925.7A CN106154500B (en) | 2016-08-30 | 2016-08-30 | Inexpensive big wide-angle high definition optical system and its camera lens of application |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610761925.7A CN106154500B (en) | 2016-08-30 | 2016-08-30 | Inexpensive big wide-angle high definition optical system and its camera lens of application |
Publications (2)
| Publication Number | Publication Date |
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| CN106154500A CN106154500A (en) | 2016-11-23 |
| CN106154500B true CN106154500B (en) | 2018-08-28 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106547075A (en) * | 2017-02-07 | 2017-03-29 | 广东弘景光电科技股份有限公司 | Day and night wide-angle imaging optical system and its camera module of application |
| CN109471243B (en) * | 2018-12-26 | 2024-05-24 | 中山联合光电科技股份有限公司 | Ultra-short TTL infrared confocal lens optical system |
| CN110221412B (en) * | 2019-06-30 | 2021-12-14 | 瑞声光学解决方案私人有限公司 | Image pickup optical lens |
| CN113253431B (en) * | 2021-06-25 | 2021-10-08 | 江西联创电子有限公司 | Infrared confocal lens and imaging device |
| CN115185070A (en) * | 2022-07-28 | 2022-10-14 | 协益电子（苏州）有限公司 | Glass-plastic mixed vehicle-mounted monitoring lens and electronic equipment |
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| JP3327947B2 (en) * | 1992-04-13 | 2002-09-24 | オリンパス光学工業株式会社 | Objective lens for endoscope |
| US5781350A (en) * | 1994-01-27 | 1998-07-14 | Asahi Kogaku Kogyo Kabushiki Kaisha | Objective lens for endoscope |
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| KR101089326B1 (en) * | 2009-10-20 | 2011-12-02 | 주식회사 나오텍 | Optical system for wide angle camera |
| WO2013018748A1 (en) * | 2011-08-01 | 2013-02-07 | 株式会社オプトロジック | Imaging lens |
| TWI474039B (en) * | 2013-02-08 | 2015-02-21 | Largan Precision Co Ltd | Wide-angle image capturing lens assembly |
| EP3037858A4 (en) * | 2013-08-22 | 2017-03-15 | Olympus Corporation | Endoscope objective optical system |
| CN105259644B (en) * | 2015-11-04 | 2017-09-26 | 福建福光股份有限公司 | A kind of 2.3mm focuses day and night bugeye lens |
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