CN106154500A - Low cost big Radix Rumicis high definition optical system and the camera lens of application thereof - Google Patents
Low cost big Radix Rumicis high definition optical system and the camera lens of application thereof Download PDFInfo
- Publication number
- CN106154500A CN106154500A CN201610761925.7A CN201610761925A CN106154500A CN 106154500 A CN106154500 A CN 106154500A CN 201610761925 A CN201610761925 A CN 201610761925A CN 106154500 A CN106154500 A CN 106154500A
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- Prior art keywords
- lens
- optical system
- low cost
- radix rumicis
- high definition
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Classifications
-
- 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)
- Lenses (AREA)
Abstract
The embodiment of the invention discloses a kind of low cost big Radix Rumicis high definition optical system, the most at least include from object plane to image planes along optical axis: the first lens, the second lens, the 3rd lens and the 4th lens；The object plane side of the first lens is plane, and image planes side is concave surface, and its focal power is negative；The object plane side of the second lens is convex surface, and image planes side is convex surface, and its focal power is just；The object plane side of the 3rd lens is plane, and image planes side is convex surface, and its focal power is just；The object plane side of the 4th lens is concave surface, and image planes side is convex surface, and its 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 applied to the occasion that Smart Home etc. need to day and night monitor, and it is mainly made up of 4 pieces of lens, and lens piece number is few, simple in construction, and relatively same specification product, greatly reduces cost；There is big Radix Rumicis, large aperture, the favorable optical performance such as the most confocal, and there is good high temperature imaging effect, the premium properties of 2M pixel resolution.
Description
Technical field:
The present invention relates to the camera lens of a kind of optical system and application thereof, especially one and be applied to the need such as Smart Home day and night
The low cost big Radix Rumicis 1080P high definition optical system of monitoring occasion and the camera lens of application thereof.
Background technology:
Existing optical system or camera lens, be particularly applied to Smart Home etc. and need to day and night monitor optical system or the mirror of occasion
, there is structure complicated in head, diagonal field of view angle is little, relatively costly defect.
Summary of the invention:
For overcoming the problem that existing optical system or lens construction are complicated, diagonal field of view angle is little, relatively costly, the present invention is real
Execute example and on the one hand provide a kind of low cost big Radix Rumicis high definition optical system.
Low cost big Radix Rumicis high definition optical system, the most at least includes from object plane to image planes along optical axis: the first lens, second
Lens, the 3rd lens and the 4th lens；
The object plane side of described first lens is plane, and image planes side is concave surface, and its focal power is negative；
The object plane side of described second lens is convex surface, and image planes side is convex surface, and its focal power is just；
The object plane side of described 3rd lens is plane, and image planes side is convex surface, and its focal power is just；
The object plane side of described 4th lens is concave surface, and image planes side is convex surface, and its focal power is negative.
The present invention can be improved by following scheme:
3rd lens and the 4th lens are mutually glued forms compound lens, and the focal distance f 34 of compound lens meets: 15.52mm <
f34<45.75mm。
First lens use heavy-lanthanide flint or lanthanum flint glass material to make, its focal distance f 1, Refractive Index of Material Nd1, material
Abbe constant Vd1 meets following condition :-4.179mm < f1 <-2.53mm, and 1.77 < Nd1 < 1.92,30 < Vd1 < 50.
Second lens use heavy-lanthanide flint glass material or dense flint glass material to make, and its focal distance f 2, material reflect
Rate Nd2, material Abbe constant Vd2 meet following condition: 3.396mm < f2 < 6.392mm, and 1.90 < Nd2 < 2.05,16 < Vd2 < 40.
3rd lens use lanthanum crown flint glass material to make, and the 4th lens use heavy-lanthanide flint or dense flint glass
Material is made, and the material Abbe constant Vd3 of the 3rd lens and the material Abbe constant Vd4 of the 4th lens meets: 30 < | Vd3-Vd4
|<45。
The material Abbe constant Vd1 of the first lens and the material Abbe constant Vd4 of the 4th lens meets: 20 < | Vd1-Vd4
|。
The diaphragm of optical system is between the first lens and the second lens, near the second lens side.
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 whole optical system, and f1 is the focal length of the first lens, and f2 is the second lens
Focal length, f34 is the 3rd lens and the combined focal length of the 4th lens.
On the other hand, the embodiment of the present invention additionally provides a kind of camera lens.
A kind of camera lens, is provided with low cost described above big Radix Rumicis high definition optical system in camera lens.
The embodiment of the present invention, is applied to the occasion that Smart Home etc. need to day and night monitor, and it is mainly made up of, thoroughly 4 pieces of lens
Mirror piece number is few, simple in construction, and relatively same specification product, greatly reduces cost；Use 4 pieces of different lens to be mutually combined, have
150 ° of big Radix Rumiciss, large aperture, 850nm IR wavelengths compensate the favorable optical performance such as the most confocal, and have good high temperature
Imaging effect, the premium properties of 2M pixel resolution.
Accompanying drawing illustrates:
For the technical scheme being illustrated more clearly that in the embodiment of the present invention, in embodiment being described below required for make
Accompanying drawing be briefly described, it should be apparent that, below describe in accompanying drawing be only some embodiments of the present invention, for
From the point of view of those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to obtain other according to these accompanying drawings
Accompanying drawing.
Fig. 1 is optical system or the structural representation of camera lens of the present invention；
Fig. 2 is optical system or camera lens transfer curve figure of 120lp/mm under visible light conditions of the present invention；
Fig. 3 is optical system or camera lens transfer curve figure of 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 distortion figure under visible light conditions of the present invention；
Fig. 5 is optical system or camera lens transfer curve figure of 120lp/mm under the conditions of 60 DEG C of the present invention.
Detailed description of the invention:
In order to make technical problem solved by the invention, technical scheme and beneficial effect clearer, below in conjunction with
Drawings and Examples, are further elaborated to the present invention.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 it is shown in figure 1, low cost big Radix Rumicis high definition optical system, 6 the most at least include from object plane to image planes along optical axis:
One lens the 1, second lens the 2, the 3rd lens 3 and the 4th lens 4.
The object plane side of described first lens 1 is plane, and image planes side is concave surface, and its focal power is negative；
The object plane side of described second lens 2 is convex surface, and image planes side is convex surface, and its focal power is just；
The object plane side of described 3rd lens 3 is plane, and image planes side is convex surface, and its focal power is just；
The object plane side of described 4th lens 4 is concave surface, and image planes side is convex surface, and its focal power is negative.
The embodiment of the present invention, is applied to the occasion that Smart Home etc. need to day and night monitor, and it is mainly made up of, thoroughly 4 pieces of lens
Mirror piece number is few, simple in construction, and relatively same specification product, greatly reduces cost；Using 4 pieces of different lens to be mutually combined, it is right to have
The big Radix Rumicis in 150 °, angular direction, large aperture, 850nm IR wavelengths compensate the favorable optical performance such as the most confocal, and have good
High temperature imaging effect, the premium properties of 2M pixel resolution.
Further, the 3rd lens 3 and the 4th lens 4 the most glued formation compound lens, the focal distance f 34 of compound lens is full
Foot: 15.52mm < f34 < 45.75mm.Simple and compact for structure, volume is little, it is ensured that good optical property.
Yet further, compound lens is the most satisfied:Wherein,Divide with Vd3
It is not focal power and the material Abbe constant of the 3rd lens 3,With focal power and the material Abbe that Vd4 is respectively the 4th lens 4
Constant,Focal power for compound lens.Good optical property can be ensured.
Further, the first lens 1 use heavy-lanthanide flint or lanthanum flint glass material to make, and its focal distance f 1, material are rolled over
Penetrate rate Nd1, material Abbe constant Vd1 meets following condition :-4.179mm < f1 <-2.53mm, 1.77 < Nd1 < 1.92,30 < Vd1 <
50.Simple in construction, it is ensured that good optical property.
Further, the second lens 2 use heavy-lanthanide flint glass material or dense flint glass material to make, its 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.Simple in construction, it is ensured that good optical property.
Yet further, the 3rd lens 3 use lanthanum crown flint glass material to make, and the 4th lens 4 use weight lanthanum fire
Stone or dense flint glass material are made, the material Abbe constant Vd3 and the material Abbe constant Vd4 of the 4th lens 4 of the 3rd lens 3
Meet: 30 < | Vd3-Vd4 | < 45.Simple in construction, it is ensured that good optical property.
Further, the material Abbe constant Vd1 of the first lens 1 and material Abbe constant Vd4 of the 4th lens 4 is full
Foot: 20 < | Vd1-Vd4 |.Simple in construction, 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, near the second lens 2
Side.
Yet further, optics overall length TTL of optical system meets: 14mm < TTL < 22mm.
Specifically, 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 whole 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 3rd lens 3 and the combined focal length of the 4th lens 4.Simple in construction, it is ensured that good optical property.
Further, the first lens 1 are glass lens to the 4th lens 4, and light transmission is good, it is ensured that good optics
Performance.
Specifically, in the present embodiment, the focal distance f of this optical system is 3.25mm, and stop index FNo. is 2.0, diagonal angle
The direction angle of visual field 2 ω=150 °, 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 from object plane to image planes 6, OBJ is object plane；S1, S2 correspond to two surfaces of the first lens 1；
STO is diaphragm 5 position；S4, S5 correspond to two surfaces of the second lens 2；S6, S7 correspond to two of the 3rd 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。
Optical system from Fig. 2 to Fig. 5 it can be seen that in the present embodiment has big Radix Rumicis, large aperture, 850nm wavelength
Infrared light compensates day, night confocal favorable optical performance, and has good high temperature imaging effect, and 2M pixel resolution etc. is excellent
Performance.
A kind of camera lens, is provided with low cost described above big Radix Rumicis high definition optical system in camera lens.
It is described above as combining one or more embodiments that particular content provides, does not assert that the present invention's is concrete real
Execute and be confined to these explanations.All and the method for the present invention, structure etc. approximate, duplicate, or under present inventive concept premise
Make some technology deduction or replace, all should be considered as protection scope of the present invention.
Claims (10)
1. low cost big Radix Rumicis high definition optical system, the most at least includes from object plane to image planes along optical axis: the first lens, second saturating
Mirror, the 3rd lens and the 4th lens；It is characterized in that,
The object plane side of described first lens is plane, and image planes side is concave surface, and its focal power is negative；
The object plane side of described second lens is convex surface, and image planes side is convex surface, and its focal power is just；
The object plane side of described 3rd lens is plane, and image planes side is convex surface, and its focal power is just；
The object plane side of described 4th lens is concave surface, and image planes side is convex surface, and its focal power is negative.
Low cost the most according to claim 1 big Radix Rumicis high definition optical system, it is characterised in that the 3rd lens and the 4th saturating
Mirror is mutually glued forms compound lens, and the focal distance f 34 of compound lens meets: 15.52mm < f34 < 45.75mm.
Low cost the most according to claim 1 big Radix Rumicis high definition optical system, it is characterised 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.
Low cost the most according to claim 1 big Radix Rumicis high definition optical system, it is characterised 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.
Low cost the most according to claim 1 big Radix Rumicis high definition optical system, it is characterised in that the 3rd lens material Ah
The material Abbe constant Vd4 of shellfish constant Vd3 and the 4th lens meets: 30 < | Vd3-Vd4 | < 45.
Low cost the most according to claim 1 big Radix Rumicis high definition optical system, it is characterised in that the first lens material Ah
The material Abbe constant Vd4 of shellfish constant Vd1 and the 4th lens meets: 20 < | Vd1-Vd4 |.
Low cost the most according to claim 1 big Radix Rumicis high definition optical system, it is characterised in that the diaphragm position of optical system
Between the first lens and the second lens, near the second lens side.
Low cost the most according to claim 1 big Radix Rumicis high definition optical system, it is characterised in that the optics of optical system is total
Long TTL meets: 14mm < TTL < 22mm.
Low cost the most according to claim 1 big Radix Rumicis high definition optical system, it is characterised in that this optical system 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 whole 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
Three lens and the combined focal length of the 4th lens.
10. a camera lens, it is characterised in that be provided with the big Radix Rumicis of the low cost described in any one of claim 1-9 in camera lens high
Clear optical system.
Priority Applications (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 |
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 |
|---|---|
| CN106154500A true CN106154500A (en) | 2016-11-23 |
| CN106154500B CN106154500B (en) | 2018-08-28 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN109471243A (en) * | 2018-12-26 | 2019-03-15 | 中山联合光电科技股份有限公司 | A kind of infrared confocal lens optical system of ultrashort t TL |
| CN110221412A (en) * | 2019-06-30 | 2019-09-10 | 瑞声科技(新加坡)有限公司 | Camera optical camera lens |
| CN113253431A (en) * | 2021-06-25 | 2021-08-13 | 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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| 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 |
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| CN113253431A (en) * | 2021-06-25 | 2021-08-13 | 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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|---|---|
| CN106154500B (en) | 2018-08-28 |
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