CN208902956U - A kind of optical imaging system applied to smart camera - Google Patents
A kind of optical imaging system applied to smart camera Download PDFInfo
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- CN208902956U CN208902956U CN201821605006.1U CN201821605006U CN208902956U CN 208902956 U CN208902956 U CN 208902956U CN 201821605006 U CN201821605006 U CN 201821605006U CN 208902956 U CN208902956 U CN 208902956U
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Abstract
The embodiment of the present application discloses a kind of optical imaging system applied to smart camera, along light incident direction, from object plane side to image planes side, it is disposed with the first lens, the second lens, the third lens, aperture diaphragm, the 4th lens, the 5th lens, the 6th lens and image planes, first lens are curved month type negative lens, second lens are planoconvex negative lens, the third lens are planoconvex positive lens, 4th lens are biconvex negative lens, 5th lens are curved month type positive lens, and the 6th lens are curved month type positive lens.The optical imaging system of the application uses the imaging technique scheme of 6 optical lenses composition, wherein one piece of lens is high refractive index lens, and the optical-modulation transfer function Modulation Transfer Function (abbreviation MTF) of the optical system of the application is very high；It can satisfy the 1.4um single pixel point requirement of IMX179.
Description
Technical field
This application involves a kind of optical systems, more particularly to a kind of optical imaging system applied to smart camera.
Background technique
With the continuous development of current smart camera, image quality requirement is higher and higher, and the chip arranged in pairs or groups is certain
Size under, single pixel point is smaller and smaller, also just proposes higher imaging requirements to the optical imaging system of upstream, especially
In terms of resolution ratio, upgrade to 5,000,000 from original 3,000,000,8,000,000 grades occurred till now；And it is big on the market at present
Majority is known as the camera lens of smart camera, and resolution ratio is generally 3,000,000, can satisfy the camera lens phoenix hair of eight mega pixel grades
Rare thing, or be limited to technology, or be limited to cost etc.
Utility model content
The purpose of this utility model is to provide a kind of optical imaging systems applied to smart camera, to overcome existing skill
Deficiency in art.
To achieve the above object, the utility model provides the following technical solutions: the embodiment of the present application discloses one kind and is applied to
The optical imaging system of smart camera, from object plane side to image planes side, is disposed with first thoroughly along light incident direction
Mirror, the second lens, the third lens, aperture diaphragm, the 4th lens, the 5th lens, the 6th lens and image planes, first lens are
Curved month type negative lens, second lens are planoconvex negative lens, and the third lens are planoconvex positive lens, and the described 4th thoroughly
Mirror is biconvex negative lens, and the 5th lens are curved month type positive lens, and the 6th lens are curved month type positive lens.
Preferably, second lens are plane close to object plane side, and the third lens are plane close to image planes side.
Preferably, the 4th lens and the 5th lens form one group of balsaming lens group, the focal length of the balsaming lens group
Meet: 11 < fz< 12, wherein fzFor balsaming lens group focal length.
Preferably, the optical interval of first lens and the second lens is 2.74mm, and second lens and third are saturating
The optical interval of mirror is 3.72mm, and the optical interval of the third lens and aperture diaphragm is 1.86mm, the aperture diaphragm with
The optical interval of 4th lens is 0.57mm, and the optical interval of the 5th lens and the 6th lens is 1.65mm.
Preferably, the optics rear cut-off distance of the optical imaging system is 4.3mm.
Preferably, the optical imaging system meets:
- 9.0mm < f1< -8.0mm
- 4.0mm < f2< -5.0mm
6.0mm < f3< 7.0mm
- 21mm < f4< -20mm
26mm < f5< 27mm
16mm < f6< 17mm
Wherein: f1For the focal length of the first lens, f2For the focal length of the second lens, f3For the focal length of the third lens, f4It is the 4th
The focal length of lens, f5For the focal length of the 5th lens, f6For the focal length of the 6th lens.
Preferably, the optical imaging system meets:
First lens: 12≤R2≤13 3.8≤R2≤4.0 0.7≤D≤0.8,
Second lens: 3.5≤R2 of R1=∞≤3.7 0.6≤D≤0.7,
The third lens: 2.3≤D≤2.5 the R2=∞ of 6≤R1≤7
4th lens: 9.0≤R1≤10.0-2.9≤1.5≤D≤1.8 R2≤- 2.7
5th lens :-2.9≤R1≤- 2.7-7≤1.0≤D≤1.2 R2≤- 6
6th lens: 10≤R1≤11 43≤R2≤45 1.1≤D≤1.2
Wherein: R1, R2 are the radius of curvature value on lens two sides, the center thickness value that D is lens.
Preferably, the optical imaging system meets: the material of first lens is H-K9L；Second lens
Material is H-QK3L；The material of the third lens is H-ZF12, and the material of the 4th lens is H-LAK11；Described 5th
The material of lens is H-ZF52A；The material of 6th lens is H-LAF55.
Preferably, the outside diameter of the 5th lens and the 6th lens is unanimously φ 6.0mm.
Compared with prior art, the optical imaging system of the application uses the imaging technique scheme of 6 optical lenses composition,
Wherein one piece of lens is high refractive index lens, the optical-modulation transfer function Modulation of the optical system of the application
Transfer Function (abbreviation MTF) is very high；It can satisfy the 1.4um single pixel point requirement of IMX179.
Detailed description of the invention
In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The some embodiments recorded in application, for those of ordinary skill in the art, without creative efforts,
It is also possible to obtain other drawings based on these drawings.
Fig. 1 is a kind of optical imaging system schematic diagram applied to smart camera in the utility model specific embodiment；
Fig. 2 is a kind of optical aberration of the optical imaging system applied to smart camera in the utility model specific embodiment
Schematic diagram；
Fig. 3 is the curvature of field of a kind of optical imaging system applied to smart camera and abnormal in the utility model specific embodiment
Become schematic diagram；
Fig. 4 is a kind of point range signal of the optical imaging system applied to smart camera in the utility model specific embodiment
Figure.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Detailed description, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole implementation
Example.Based on the embodiments of the present invention, those of ordinary skill in the art institute without making creative work
The every other embodiment obtained, fall within the protection scope of the utility model.
As shown in connection with fig. 1, the embodiment of the present application discloses a kind of optical imaging system applied to smart camera, enters along light
Direction is penetrated, from object plane side to image planes side, is disposed with the first lens 1, the second lens 2, the third lens 3, aperture light
Door screen, the 4th lens 4, the 5th lens 5, the 6th lens 6 and image planes, the first lens 1 are curved month type negative lens, and the second lens 2 are flat
Convex negative lens, the third lens 3 are planoconvex positive lens, and the 4th lens 4 are biconvex negative lens, and the 5th lens 5 are curved month type
Positive lens, the 6th lens 6 are curved month type positive lens.
In the technical scheme, the optical core of the 5th lens 5 takes coefficient Z to meet the following conditions: 0.3 < Z5< 0.5；Z system
The complexity that number reflection optical lens core takes, such as less than 0.1 difficulty is larger, not easy to be processed, and such as larger than 0.2 can high-volume
Processing, and aperture diaphragm is STO, image planes CCD.
Preferably, the second lens 2 are plane close to object plane side, and the third lens 3 are plane close to image planes side.
Preferably, the 4th lens 4 and the 5th lens 5 form one group of balsaming lens group, and the focal length of balsaming lens group meets: 11
< fz< 12, wherein fzFor balsaming lens group focal length.
In the technical scheme, the 5th lens 5 are glued substrate, and the 4th lens 4 and the 5th lens 5 pass through optical light glue
A balsaming lens group is formed after glued and one hour of high-temperature baking.
Preferably, the optical interval of the first lens 1 and the second lens 2 is 2.74mm, the second lens 2 and the third lens 3
Optical interval is 3.72mm, and the optical interval of the third lens 3 and aperture diaphragm is 1.86mm, aperture diaphragm and the 4th lens 4
Optical interval is 0.57mm, and the optical interval of the 5th lens 5 and the 6th lens 6 is 1.65mm.
Preferably, the optics rear cut-off distance of optical imaging system is 4.3mm.
In the technical scheme, the optical interval of image planes CCD and the 6th lens 6 is optics rear cut-off distance.
Preferably, optical imaging system meets:
- 9.0mm < f1< -8.0mm
- 4.0mm < f2< -5.0mm
6.0mm < f3< 7.0mm
- 21mm < f4< -20mm
26mm < f5< 27mm
16mm < f6< 17mm
Wherein: f1For the focal length of the first lens 1, f2For the focal length of the second lens 2, f3For the focal length of the third lens 3, f4For
The focal length of 4th lens 4, f5For the focal length of the 5th lens 5, f6For the focal length of the 6th lens 6.
Preferably, optical imaging system meets:
First lens 1:12≤R2≤13 3.8≤R2≤4.0 0.7≤D≤0.8,
Second 3.5≤R2 of lens 2:R1=∞≤3.7 0.6≤D≤0.7,
2.3≤D≤2.5 the R2=∞ of the third lens 3:6≤R1≤7
4th lens 4:9.0≤R1≤10.0 1.5≤D≤1.8-2.9≤R2≤- 2.7
5th lens 5:-2.9≤R1≤- 2.7 1.0≤D≤1.2-7≤R2≤- 6
6th lens 6:10≤R1≤11 43≤R2≤45 1.1≤D≤1.2
Wherein: R1, R2 are the radius of curvature value on lens two sides, the center thickness value that D is lens.
Preferably, optical imaging system meets: the material of the first lens 1 is H-K9L；The material of second lens 2 is H-
QK3L；The material of the third lens 3 is H-ZF12, and the material of the 4th lens 4 is H-LAK11；The material of 5th lens 5 is H-
ZF52A；The material of 6th lens 6 is H-LAF55.
Preferably, it is φ 6.0mm that the 5th lens 5 are consistent with the outside diameter of the 6th lens 6.
A kind of optical imaging system applied to smart camera of the embodiment of the present application is mainly for Sony IMX179 model
Imager chip.The chip single pixel point is 1.4um, and pixel arrangement 3288x2512, resolution ratio is up to 8,000,000 pixels；It is big at present
Part intelligent miniature camera is arranged in pairs or groups exactly this chip.Because the chip single pixel point is extremely small, therefore to the MTF of optical system
It is required that very high, chip level requirement is not achieved in common trigger camera lens
Fig. 2, Fig. 3 and Fig. 4 show a kind of optical imagery applied to smart camera in the utility model specific embodiment
System optics aberration schematic diagram, the curvature of field and distortion schematic diagram and point range schematic diagram.
In conclusion the optical imaging system of the application uses the imaging technique scheme of 6 optical lenses composition, wherein one
Piece lens are high refractive index lens, the optical-modulation transfer function Modulation Transfer of the optical system of the application
Function (abbreviation MTF) is very high；It can satisfy the 1.4um single pixel point requirement of IMX179.Pass through optical system simultaneously
The reasonable distributions of focal power of six pieces of lens may be implemented: focal length f=2.33mm；Aperture F#=1.8；DFOV=160 ° of angle；
Chip φ 6.3；
MTF0.3@300lp/mm。
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
There is also other identical elements in process, method, article or equipment including the element.
The above is only the specific embodiment of the application, it is noted that for the ordinary skill people of the art
For member, under the premise of not departing from the application principle, several improvements and modifications can also be made, these improvements and modifications are also answered
It is considered as the protection scope of the application.
Claims (9)
1. a kind of optical imaging system applied to smart camera, it is characterised in that: along light incident direction, from object plane side to
Image planes side is disposed with the first lens, the second lens, the third lens, aperture diaphragm, the 4th lens, the 5th lens, the 6th
Lens and image planes, first lens are curved month type negative lens, and second lens are planoconvex negative lens, the third lens
For planoconvex positive lens, the 4th lens are biconvex negative lens, and the 5th lens are curved month type positive lens, the described 6th
Lens are curved month type positive lens.
2. a kind of optical imaging system applied to smart camera according to claim 1, it is characterised in that: described second
Lens are plane close to object plane side, and the third lens are plane close to image planes side.
3. a kind of optical imaging system applied to smart camera according to claim 1, it is characterised in that: the described 4th
Lens and the 5th lens form one group of balsaming lens group, and the focal length of the balsaming lens group meets: 11 < fz< 12, wherein fzFor
Balsaming lens group focal length.
4. a kind of optical imaging system applied to smart camera according to claim 1, it is characterised in that: described first
The optical interval of lens and the second lens is 2.74mm, and the optical interval of second lens and the third lens is 3.72mm, institute
The optical interval for stating the third lens and aperture diaphragm is 1.86mm, and the optical interval of the aperture diaphragm and the 4th lens is
The optical interval of 0.57mm, the 5th lens and the 6th lens is 1.65mm.
5. a kind of optical imaging system applied to smart camera according to claim 1, it is characterised in that: the optics
The optics rear cut-off distance of imaging system is 4.3mm.
6. a kind of optical imaging system applied to smart camera according to claim 1, it is characterised in that: the optics
Imaging system meets:
- 9.0mm < f1< -8.0mm
- 4.0mm < f2< -5.0mm
6.0mm < f3< 7.0mm
- 21mm < f4< -20mm
26mm < f5< 27mm
16mm < f6< 17mm
Wherein: f1For the focal length of the first lens, f2For the focal length of the second lens, f3For the focal length of the third lens, f4For the 4th lens
Focal length, f5For the focal length of the 5th lens, f6For the focal length of the 6th lens.
7. a kind of optical imaging system applied to smart camera according to claim 1, it is characterised in that: the optics
Imaging system meets:
First lens: 12≤R2≤13 3.8≤R2≤4.0 0.7≤D≤0.8,
Second lens: 3.5≤R2 of R1=∞≤3.7 0.6≤D≤0.7,
The third lens: 2.3≤D≤2.5 the R2=∞ of 6≤R1≤7
4th lens: 9.0≤R1≤10.0-2.9≤1.5≤D≤1.8 R2≤- 2.7
5th lens :-2.9≤R1≤- 2.7-7≤1.0≤D≤1.2 R2≤- 6
6th lens: 10≤R1≤11 43≤R2≤45 1.1≤D≤1.2
Wherein: R1, R2 are the radius of curvature value on lens two sides, the center thickness value that D is lens.
8. a kind of optical imaging system applied to smart camera according to claim 1, it is characterised in that: the optics
Imaging system meets: the material of first lens is H-K9L；The material of second lens is H-QK3L；The third is saturating
The material of mirror is H-ZF12, and the material of the 4th lens is H-LAK11；The material of 5th lens is H-ZF52A；It is described
The material of 6th lens is H-LAF55.
9. a kind of optical imaging system applied to smart camera according to claim 1, it is characterised in that: the described 5th
The outside diameter of lens and the 6th lens is unanimously φ 6.0mm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821605006.1U CN208902956U (en) | 2018-09-29 | 2018-09-29 | A kind of optical imaging system applied to smart camera |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821605006.1U CN208902956U (en) | 2018-09-29 | 2018-09-29 | A kind of optical imaging system applied to smart camera |
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| CN208902956U true CN208902956U (en) | 2019-05-24 |
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| CN201821605006.1U Active CN208902956U (en) | 2018-09-29 | 2018-09-29 | A kind of optical imaging system applied to smart camera |
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