CN106873127B - Camera optical camera lens - Google Patents
Camera optical camera lens Download PDFInfo
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- CN106873127B CN106873127B CN201710122991.4A CN201710122991A CN106873127B CN 106873127 B CN106873127 B CN 106873127B CN 201710122991 A CN201710122991 A CN 201710122991A CN 106873127 B CN106873127 B CN 106873127B
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- 230000003287 optical effect Effects 0.000 title claims abstract description 106
- 239000000463 material Substances 0.000 claims description 11
- 239000011521 glass Substances 0.000 claims description 6
- 229920003023 plastic Polymers 0.000 claims description 5
- 239000004033 plastic Substances 0.000 claims description 5
- 230000008901 benefit Effects 0.000 abstract description 5
- 230000035945 sensitivity Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 10
- 238000003384 imaging method Methods 0.000 description 5
- 230000004075 alteration Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000004568 cement Substances 0.000 description 2
- 238000004040 coloring Methods 0.000 description 2
- 210000001747 pupil Anatomy 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 210000003128 head Anatomy 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
Classifications
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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
- G02B13/0045—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 five or more lenses
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/04—Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of organic materials, e.g. plastics
- G02B1/041—Lenses
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/18—Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration
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Abstract
The present invention relates to field of optical lens, disclose a kind of camera optical camera lens, the camera optical camera lens, sequentially include: aperture, the first lens, the second lens, the third lens, the 4th lens and the 5th lens by object side to image side；And meet following relationship: 0.75 < f1/f < 0.80, -2.0 < f2/f < -1.9, -7 < f3/f < -6,0.5 < f4/f < 0.6, -0.5 < f5/f < -0.4；11<v2/n2<14,1.15<n2/n5<1.25,0.03<d3/TTL<0.035,0.15<d3/d7<0.17；1.5<(r3-r6)/(r3+r6)<1.55.Camera optical camera lens provided by the invention can take into account large aperture and high sensitivity while having the advantages that good image quality.
Description
Technical field
The present invention relates to field of optical lens, in particular to a kind of camera optical camera lens.
Background technique
In recent years, with the rise of smart phone, the demand for minimizing phtographic lens is increasingly improved, and general phtographic lens
Sensor devices nothing more than being that photosensitive coupled apparatus (Charge Coupled Device, CCD) or Complimentary Metal-Oxide are partly led
Two kinds of body device (Complementary Metal-OxideSemicondctor Sensor, CMOS Sensor), and due to half
Conductor manufacturing process technology progresses greatly, so that the Pixel Dimensions of sensor devices reduce, along with electronic product is good with function now
And light and short external form is development trend, therefore, the miniaturization pick-up lens for having good image quality becomes at present
Mainstream in the market.
To obtain preferable image quality, the camera lens that tradition is equipped on mobile phone camera mostly uses three-chip type or quadruple lenses
Structure.However, with the development of technology and users on diversity increases, constantly contracting in the elemental area of sensor devices
It is small, and in the case where requirement continuous improvement of the system to image quality, five chip lens arrangements occur gradually over lens design and work as
In, although five common chip lens can correct optical system major part optical aberration, but can not have well
Large aperture and highly sensitive advantage are taken into account while image quality.
Summary of the invention
In view of the above-mentioned problems, there are good imaging product the purpose of the present invention is to provide a kind of camera optical camera lens
Large aperture and highly sensitive advantage are taken into account while matter.
In order to solve the above technical problems, embodiments of the present invention provide a kind of camera optical camera lens, by object side to picture
Side sequentially includes: an aperture, and first lens with positive refracting power, second lens with negative refracting power, one with negative
The third lens of refracting power, the 4th lens and the 5th lens with negative refracting power with positive refracting power；Entirety is taken the photograph
As the focal length of optical lens is f, the optics overall length of whole camera optical camera lens is TTL, and the focal length of first lens is f1, institute
The focal length for stating the second lens is f2, and the focal length of the third lens is f3, and the focal length of the 4th lens is f4, and the described 5th thoroughly
The focal length of mirror is f5, and the Abbe number of second lens is v2, and the refractive index of second lens is n2, the 5th lens
Refractive index is n5, second lens with a thickness of d3, the 4th lens with a thickness of d7, the object side of second lens
Center curvature radius is r3, and the third lens image side surface center curvature radius is r6, meets following relationship: 0.75 < f1/f <
0.80,-2.0<f2/f<-1.9,-7<f3/f<-6,0.5<f4/f<0.6,-0.5<f5/f<-0.4；11<v2/n2<14,1.15<
n2/n5<1.25,0.03<d3/TTL<0.035,0.15<d3/d7<0.17；1.5<(r3-r6)/(r3+r6)<1.55.
Embodiment of the present invention in terms of existing technologies, not only can be effective by the configuration mode of said lens
Aberration is corrected using the lens with different refracting powers and focal length to obtain preferable image quality, moreover it is possible to take into account large aperture and
Highly sensitive advantage.
In addition, the focal length f1 of first lens, the focal length f2 of second lens, the focal length f3 of the third lens,
The focal length f4 of 4th lens, the focal length f5 of the 5th lens meet following relationship: 2.9 < f1 < 3.0, -8 < f2 < -7, -
27 < f3 < -24,2.0 < f4 < 2.15, -1.8 < f5 < -1.7.
In addition, the refractive index n1 of first lens, the refractive index n2 of second lens, the refraction of the third lens
Rate n3, the refractive index n4 of the 4th lens and the refractive index n5 of the 5th lens, meet following relationship: 1.5 < n1 <
1.6,1.8 < n2 < 1.9,1.65 < n3 < 1.68,1.53 < n4 < 1.55,1.52 < n5 < 1.55.
In addition, the Abbe number v1 of first lens, the Abbe number v2 of second lens, the Abbe of the third lens
Number v3, the Abbe number v4 of the 4th lens and the Abbe number v5 of the 5th lens, meet following relationship: 55 < v1 <
57,22 < v2 < 25,20 < v3 < 22,55 < v4 < 57,55 < v5 < 58.
In addition, the optics total length of camera optical camera lens is less than or equal to 4.54 millimeters.
In addition, the F-number of the camera optical camera lens is less than or equal to 1.8.
In addition, second lens with a thickness of d3, the third lens with a thickness of d5, meet following relationship:
0.65 < d3/d5 < 0.7.
In addition, the material of second lens is glass.
In addition, first lens, the third lens, the material of the 4th lens and the 5th lens are plastics.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the first embodiment of camera optical camera lens of the invention；
Fig. 2 is that the axis colouring differential of camera optical camera lens shown in Fig. 1 is intended to；
Fig. 3 is the ratio chromatism, schematic diagram of camera optical camera lens shown in Fig. 1；
Fig. 4 is the curvature of field and distortion schematic diagram of camera optical camera lens shown in Fig. 1；
Fig. 5 is the structural schematic diagram of the second embodiment of camera optical camera lens of the invention；
Fig. 6 is that the axis colouring differential of camera optical camera lens shown in Fig. 5 is intended to；
Fig. 7 is the ratio chromatism, schematic diagram of camera optical camera lens shown in Fig. 5；
Fig. 8 is the curvature of field and distortion schematic diagram of camera optical camera lens shown in Fig. 5.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to each reality of the invention
The mode of applying is explained in detail.However, it will be understood by those skilled in the art that in each embodiment of the present invention,
Many technical details are proposed in order to make reader more fully understand the present invention.But even if without these technical details and base
In the various changes and modifications of following embodiment, claimed technical solution of the invention also may be implemented.
With reference to attached drawing, the present invention provides a kind of camera optical camera lenses.Fig. 1 show the camera shooting of first embodiment of the invention
Optical lens 10, the camera optical camera lens 10 include five lens.Specifically, the camera optical camera lens 10, by object side to picture
Side sequentially includes: aperture St, the first lens L1, the second lens L2, the third lens L3, the 4th lens L4 and the 5th lens L5.
It may be provided with the optical elements such as optical filter (filter) GF between 5th lens L5 and image planes Si.
First lens L1 has positive refracting power, can effectively reduce system length, and object side outwardly protrudes as convex surface,
Aperture St is set between object and the first lens L1.Second lens L2 has negative refracting power, in the present embodiment, the second lens
The image side surface of L2 is concave surface.The third lens L3 has negative refracting power, in the present embodiment, the object side of the third lens L3 be concave surface,
Image side surface is convex surface.4th lens L4 has negative refracting power, and the 4th lens L4 with positive refracting power can distribute the first lens L1
Positive refracting power, and then reduce system sensitivity, in the present embodiment, the object side of the 4th lens L4 is concave surface, image side surface is convex
Face.5th lens L5 has positive refracting power, and in the present embodiment, the object side of the 5th lens L5 is concave surface.
Here, the focal length for defining whole camera optical camera lens 10 is f, the optics overall length of whole camera optical camera lens is TTL,
The focal length of first lens is f1, and the focal lengths of second lens is f2, and the focal length of the third lens is f3, the described 4th
The focal length of lens is f4, and the focal length of the 5th lens is f5, and the Abbe number of second lens is v2, second lens
Refractive index is n2, and the refractive index of the 5th lens is n5, second lens with a thickness of d3, the thickness of the 4th lens
For d7, the object center side radius of curvature of second lens is r3, and the third lens image side surface center curvature radius is r6,
Meet following relationship: 0.75 < f1/f < 0.80, -2.0 < f2/f < -1.9, -7 < f3/f < -6,0.5 < f4/f < 0.6, -0.5 < f5/
f<-0.4；11<v2/n2<14,1.15<n2/n5<1.25,0.03<d3/TTL<0.035,0.15<d3/d7<0.17；1.5<(r3-
r6)/(r3+r6)<1.55。
When the focal length and optics overall length of camera optical camera lens 10 of the present invention and focal length, Abbe number, the folding of each lens
When penetrating rate, thickness and center curvature radius and meeting above-mentioned relation formula, the refracting power size configuration of each lens is can control/adjusted,
While correcting aberration to guarantee image quality, meet the design requirement of large aperture and higher sensitivity, is more suitable high picture
The portable type camera shot equipment of element.
Specifically, in the embodiment of the present invention, the focal length f1 of first lens, the focal length f2 of second lens are described
The focal length f3, the focal length f4 of the 4th lens, the focal length f5 of the 5th lens of the third lens, the focal length of the 6th lens
F6, which may be designed to, meets following relationship: 2.9 < f1 < 3.0, -8 < f2 < -7, -27 < f3 < -24,2.0 < f4 < 2.15, -1.8 <
F5 < -1.7, unit: millimeter (mm).It is designed in this way, whole camera optical camera lens 10 is enabled to keep large aperture and more highly sensitive
Degree, is more suitable the portable type camera shot equipment of high pixel.
Preferably, optics overall length TTL≤4.54 millimeter (mm) of the camera optical camera lens 10 of the embodiment of the present invention.Such as
This design, more conducively realizes the Miniaturization Design of camera optical camera lens 10.Preferably, in the embodiment of the present invention, videography optical lens
The F-number of head is less than or equal to 1.8, and the camera optical camera lens 10 is object lens of large relative aperture optical system, can be realized system
Imaging performance under super large aperture, raising low light environment.Preferably, second lens with a thickness of d3, the third is saturating
Mirror with a thickness of d5, meet following relationship: 0.65 < d3/d5 < 0.7, being designed in this way can be such that the second lens and the third lens have
There is optimal thickness, is configured conducive to the assembling of system.
In camera optical camera lens 10 of the invention, the material of each lens can be glass or plastic cement, if the material of lens is glass
Glass, the then freedom degree that can increase optical system refracting power configuration of the present invention can be effectively reduced if lens material is plastic cement
Production cost.
In the embodiment of the present invention, the materials of second lens is glass, can effective improving optical performance, described first
Lens, the third lens, the material of the 4th lens and the 5th lens are plastics, and production cost can be effectively reduced.
Further, in a preferred embodiment of the invention, the refractive index n1 of first lens, second lens
Refractive index n2, the refractive index n3 of the third lens, the refraction of the refractive index n4 and the 5th lens of the 4th lens
Rate n5, meets following relationship: 1.5 < n1 < 1.6,1.8 < n2 < 1.9,1.65 < n3 < 1.68, and 1.53 < n4 < 1.55,1.52 < n5 <
1.55.It is designed in this way, is conducive to lens and obtains appropriate matching on optical material, and then the camera optical camera lens 10 can be made
Obtain preferable image quality.
It should be noted that in the embodiment of the present invention, the Abbe number v1 of first lens, the Abbe of second lens
Number v2, the Abbe number v3, the Abbe number v4 of the 4th lens and the Abbe number of the 5th lens of the third lens
V5 is designed to meet following relationship: 55 < v1 < 57,22 < v2 < 25,20 < v3 < 22,55 < v4 < 57,55 < v5 < 58.So
Design, Optical Chromatic phenomenon when camera optical camera lens 10 can effectively be inhibited to be imaged.
It is understood that the refractive index design scheme and Abbe number design scheme of above-mentioned each lens can be combined with each other and
Apply in the design of camera optical camera lens 10 so that the second lens L2 and the third lens L3 using high refractive index,
Low Abbe number optical material is made, and can effectively reduce camera lens color difference, greatly improves the image quality of camera optical camera lens 10.
In addition, the surface of lens can be set to it is aspherical, it is aspherical to be easy to be fabricated to the shape other than spherical surface, obtain
More controlled variable is obtained, to cut down aberration, and then reduces the number that lens use, therefore the present invention can be effectively reduced and take the photograph
As the total length of optical lens.In the embodiment of the present invention, the object side of each lens and image side surface are aspherical.
Preferably, it is also provided with the point of inflexion and/or stationary point on the object side of the lens and/or image side surface, with full
The imaging demand of sufficient high-quality, specific implementable solution are joined lower described.
It shown below the design data of according to an embodiment of the present invention 1 camera optical camera lens 10.
Table 1, table 2 show the data of the camera optical camera lens 10 of the embodiment of the present invention 1.
[table 1]
The meaning of each symbol is as follows.
F: the focal length of camera optical camera lens 10；
The focal length of f1: the first lens L1；
The focal length of f2: the second lens L2；
F3: the focal length of the third lens L3；
The focal length of f4: the four lens L4；
The focal length of f5: the five lens L5；
TTL: the optics overall length of camera optical camera lens 10.
[table 2]
Wherein, R1, R2 are the object side of the first lens L1, image side surface, and R3, R4 are object side, the image side of the second lens L2
Face, R5, R6 are the object side of the third lens L3, image side surface, and R7, R8 are the object side of the 4th lens L4, image side surface, and R9, R10 are
The object side of 5th lens L5, image side surface, R11, R12 are the object side of optical filter GF, image side surface.The meaning of other each symbols is such as
Under.
Distance on the axis of the object side of d0: aperture St to first lens L1；
Thickness on the axis of d1: the first lens L1；
Distance on the image side surface of d2: the first lens L1 to the axis of the object side of the second lens L2；
Thickness on the axis of d3: the second lens L2；
Distance on the image side surface of d4: the second lens L2 to the axis of the object side of the third lens L3；
D5: thickness on the axis of the third lens L3；
D6: distance on the axis of the image side surface of the third lens L3 to the object side of the 4th lens L4；
Thickness on the axis of d7: the four lens L4；
Distance on the image side surface of d8: the four lens L4 to the axis of the object side of the 5th lens L5；
Thickness on the axis of d9: the five lens L5；
Distance on the image side surface of d10: the five lens L5 to the axis of the object side of optical filter GF；
D11: thickness on the axis of optical filter GF；
D12: distance on the axis of the image side surface of optical filter GF to image planes；
The refractive index of nd1: the first lens L1；
The refractive index of nd2: the second lens L2；
Nd3: the refractive index of the third lens L3；
The refractive index of nd4: the four lens L4；
The refractive index of nd5: the five lens L5；
Ndg: the refractive index of optical filter GF；
The Abbe number of v1: the first lens L1；
The Abbe number of v2: the second lens L2；
V3: the Abbe number of the third lens L3；
The Abbe number of v4: the four lens L4；
The Abbe number of v5: the five lens L5；
Vg: the Abbe number of optical filter GF.
Table 3 shows the aspherical surface data of each lens in the camera optical camera lens 10 of the embodiment of the present invention 1.
[table 3]
Table 4, table 5 show the point of inflexion of each lens and stationary point design in the camera optical camera lens 10 of the embodiment of the present invention 1
Data.Wherein, R1, R2 respectively represent object side and the image side surface of the first lens L1, and R3, R4 respectively represent the object of the second lens L2
Side and image side surface, R5, R6 respectively represent object side and the image side surface of the third lens L3, and R7, R8 respectively represent the 4th lens L4
Object side and image side surface, R9, R10 respectively represent object side and the image side surface of the 5th lens L5." point of inflexion position " field pair
Answering data is vertical range of the point of inflexion set by each lens surface to 10 optical axis of camera optical camera lens." stationary point position " field
Corresponding data is vertical range of the stationary point set by each lens surface to 10 optical axis of camera optical camera lens.
[table 4]
| Point of inflexion number | Point of inflexion position 1 | Point of inflexion position 2 | |
| R1 | 1 | 0.985 | |
| R2 | 1 | 0.645 | |
| R3 | 0 | ||
| R4 | 0 | ||
| R5 | 0 | ||
| R6 | 1 | 0.905 | |
| R7 | 2 | 1.295 | 1.435 |
| R8 | 0 | ||
| R9 | 1 | 1.265 | |
| R10 | 2 | 0.565 | 2.545 |
[table 5]
| Stationary point number | Stationary point position 1 | |
| R1 | 0 | |
| R2 | 1 | 0.875 |
| R3 | 0 | |
| R4 | 0 | |
| R5 | 0 | |
| R6 | 0 | |
| R7 | 0 | |
| R8 | 0 | |
| R9 | 1 | 2.305 |
| R10 | 1 | 1.385 |
Fig. 2, Fig. 3 respectively illustrate videography optical lens of the light Jing Guo embodiment 1 that wavelength is 486nm, 588nm and 656nm
Color difference and ratio chromatism, schematic diagram on axis after first 10.Fig. 4 is then shown, light the taking the photograph by embodiment 1 that wavelength is 588nm
As the curvature of field and distortion schematic diagram after optical lens 10.
Following table 6 lists the numerical value that each conditional is corresponded in the present embodiment according to the above conditions.Obviously, the present embodiment
Imaging optical system meet above-mentioned conditional.
[table 6]
| Condition | Embodiment 1 |
| 0.75<f1/f<0.80 | 0.762742 |
| -2.0<f2/f<-1.9 | -1.921604 |
| -7<f3/f<-6 | -6.528848 |
| 0.5<f4/f<0.6 | 0.542302 |
| -0.5<f5/f<-0.4 | -0.450194 |
| 11<v2/n2<14 | 12.885760 |
| 1.15<n2/n5<1.25 | 1.203101 |
| 0.03<d3/TTL<0.035 | 0.031057 |
| 0.15<d3/d7<0.17 | 0.159323 |
| 1.5<(r3-r6)/(r3+r6)<1.55 | 1.5155063 |
In the present embodiment, the Entry pupil diameters of the camera optical camera lens are 2.16mm, and full filed image height is 3.261mm,
The field angle of diagonal is 79.32 °.
Fig. 5 show the camera optical camera lens 20 of second embodiment of the invention, the configuration and first embodiment of each lens
Camera optical camera lens 10 be substantially the same.It shown below the design number of according to an embodiment of the present invention 2 camera optical camera lens 20
According to.
Table 7, table 8 show the data of the camera optical camera lens 20 of the embodiment of the present invention 2.
[table 7]
The meaning of each symbol is as follows.
F: the focal length of camera optical camera lens -20；
The focal length of f1: the first lens L1；
The focal length of f2: the second lens L2；
F3: the focal length of the third lens L3；
The focal length of f4: the four lens L4；
The focal length of f5: the five lens L5；
TTL: the optics overall length of camera optical camera lens 20.
[table 8]
Wherein, R1, R2 are the object side of the first lens L1, image side surface, and R3, R4 are object side, the image side of the second lens L2
Face, R5, R6 are the object side of the third lens L3, image side surface, and R7, R8 are the object side of the 4th lens L4, image side surface, and R9, R10 are
The object side of 5th lens L5, image side surface, R11, R12 are the object side of optical filter GF, image side surface.The meaning of other each symbols is such as
Under.
Distance on the axis of the object side of d0: aperture St to first lens L1；
Thickness on the axis of d1: the first lens L1；
Distance on the image side surface of d2: the first lens L1 to the axis of the object side of the second lens L2；
Thickness on the axis of d3: the second lens L2；
Distance on the image side surface of d4: the second lens L2 to the axis of the object side of the third lens L3；
D5: thickness on the axis of the third lens L3；
D6: distance on the axis of the image side surface of the third lens L3 to the object side of the 4th lens L4；
Thickness on the axis of d7: the four lens L4；
Distance on the image side surface of d8: the four lens L4 to the axis of the object side of the 5th lens L5；
Thickness on the axis of d9: the five lens L5；
Distance on the image side surface of d10: the five lens L5 to the axis of the object side of optical filter GF；
D11: thickness on the axis of optical filter GF；
D12: distance on the axis of the image side surface of optical filter GF to image planes；
The refractive index of nd1: the first lens L1；
The refractive index of nd2: the second lens L2；
Nd3: the refractive index of the third lens L3；
The refractive index of nd4: the four lens L4；
The refractive index of nd5: the five lens L5；
Ndg: the refractive index of optical filter GF；
The Abbe number of v1: the first lens L1；
The Abbe number of v2: the second lens L2；
V3: the Abbe number of the third lens L3；
The Abbe number of v4: the four lens L4；
The Abbe number of v5: the five lens L5；
Vg: the Abbe number of optical filter GF.
Table 9 shows the aspherical surface data of each lens in the camera optical camera lens 20 of the embodiment of the present invention 2.
[table 9]
Table 10, table 11 show the point of inflexion of each lens and stationary point in the camera optical camera lens 20 of the embodiment of the present invention 2 and set
It counts.Wherein, R1, R2 respectively represent object side and the image side surface of the first lens L1, and R3, R4 respectively represent the second lens L2's
Object side and image side surface, R5, R6 respectively represent object side and the image side surface of the third lens L3, and R7, R8 respectively represent the 4th lens
The object side of L4 and image side surface, R9, R10 respectively represent object side and the image side surface of the 5th lens L5." point of inflexion position " field
Corresponding data is vertical range of the point of inflexion set by each lens surface to -20 optical axis of camera optical camera lens." stationary point position "
Field corresponding data is vertical range of the stationary point set by each lens surface to -20 optical axis of camera optical camera lens.
[table 10]
[table 11]
| Stationary point number | Stationary point position 1 | |
| R1 | 0 | |
| R2 | 1 | 0.875 |
| R3 | 0 | |
| R4 | 0 | |
| R5 | 0 | |
| R6 | 0 | |
| R7 | 0 | |
| R8 | 0 | |
| R9 | 1 | 2.315 |
| R10 | 1 | 1.385 |
Fig. 6, Fig. 7 respectively illustrate videography optical lens of the light Jing Guo embodiment 2 that wavelength is 486nm, 588nm and 656nm
Color difference and ratio chromatism, schematic diagram on axis after first 20.Fig. 8 is then shown, light the taking the photograph by embodiment 2 that wavelength is 588nm
As the curvature of field and distortion schematic diagram after optical lens 20.
Following table 12 lists the numerical value that each conditional is corresponded in the present embodiment according to the above conditions.Obviously, this implementation
The imaging optical system of example meets above-mentioned conditional.
[table 12]
| Condition | Embodiment 1 |
| 0.75<f1/f<0.80 | 0.763273 |
| -2.0<f2/f<-1.9 | -1.924890 |
| -7<f3/f<-6 | -6.559959 |
| 0.5<f4/f<0.6 | 0.542866 |
| -0.5<f5/f<-0.4 | -0.451696 |
| 11<v2/n2<14 | 12.885761 |
| 1.15<n2/n5<1.25 | 1.203101 |
| 0.03<d3/TTL<0.035 | 0.031105228 |
| 0.15<d3/d7<0.17 | 0.1602273 |
| 1.5<(r3-r6)/(r3+r6)<1.55 | 1.5288107 |
In the present embodiment, the Entry pupil diameters of the camera optical camera lens are 2.16mm, and full filed image height is 3.261mm,
The field angle of diagonal is 79.33 °.
It will be understood by those skilled in the art that the respective embodiments described above are to realize specific embodiments of the present invention,
And in practical applications, can to it, various changes can be made in the form and details, without departing from the spirit and scope of the present invention.
Claims (9)
1. a kind of camera optical camera lens, which is characterized in that the camera optical camera lens sequentially includes: a light by object side to image side
Circle, first lens with positive refracting power, object side are convex surface, second lens with negative refracting power, image side surface
For concave surface, the third lens with negative refracting power, object side is concave surface, image side surface is convex surface, and one has positive refracting power
4th lens, object side is concave surface, image side surface is convex surface and the 5th lens with negative refracting power, and object side is
Concave surface, the lens sum with refracting power are five；
The focal length of whole camera optical camera lens is f, and the optics overall length of whole camera optical camera lens is TTL, first lens
Focal length is f1, and the focal length of second lens is f2, and the focal length of the third lens is f3, and the focal length of the 4th lens is
F4, the focal length of the 5th lens are f5, and the Abbe number of second lens is v2, and the refractive index of second lens is n2,
The refractive index of 5th lens is n5, second lens with a thickness of d3, the 4th lens with a thickness of d7, described the
The object center side radius of curvature of two lens is r3, and the third lens image side surface center curvature radius is r6, meets following pass
It is formula:
0.75<f1/f<0.80,-2.0<f2/f<-1.9,-7<f3/f<-6,0.5<f4/f<0.6,-0.5<f5/f<-0.4；
11<v2/n2<14,1.15<n2/n5<1.25,0.03<d3/TTL<0.035,0.15<d3/d7<0.17；
1.5<(r3-r6)/(r3+r6)<1.55。
2. camera optical camera lens according to claim 1, which is characterized in that the focal length f1 of first lens, described
The focal length f2 of two lens, the focal length f3 of the third lens, the focal length f4 of the 4th lens, the focal length of the 5th lens
F5, the focal length numerical value unit of the lens are mm and meet following relationship:
2.9 < f1 < 3.0, -8 < f2 < -7, -27 < f3 < -24,2.0 < f4 < 2.15, -1.8 < f5 < -1.7.
3. camera optical camera lens according to claim 1, which is characterized in that the refractive index n1 of first lens, it is described
The refractive index n2 of second lens, the refractive index n3, the refractive index n4 and the described 5th of the 4th lens of the third lens
The refractive index n5 of lens:
1.5 < n1 < 1.6,1.8 < n2 < 1.9,1.65 < n3 < 1.68,1.53 < n4 < 1.55,1.52 < n5 < 1.55.
4. camera optical camera lens according to claim 1, which is characterized in that the Abbe number v1 of first lens, it is described
The Abbe number v2 of second lens, the Abbe number v3, the Abbe number v4 and the described 5th of the 4th lens of the third lens
The Abbe number v5 of lens meets following relationship:
55 < v1 < 57,22 < v2 < 25,20 < v3 < 22,55 < v4 < 57,55 < v5 < 58.
5. camera optical camera lens according to claim 1, which is characterized in that the optics total length of the camera optical camera lens
Less than or equal to 4.54 millimeters.
6. camera optical camera lens according to claim 1, which is characterized in that the F-number of the camera optical camera lens is less than
Or it is equal to 1.8.
7. camera optical camera lens according to claim 1, which is characterized in that second lens with a thickness of d3, it is described
The third lens with a thickness of d5, meet following relationship: 0.65 < d3/d5 < 0.7.
8. camera optical camera lens according to claim 1, which is characterized in that the material of second lens is glass.
9. camera optical camera lens according to claim 1, which is characterized in that first lens, the third lens, the 4th are thoroughly
The material of mirror and the 5th lens is plastics.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2015060005A (en) * | 2013-09-17 | 2015-03-30 | 株式会社リコー | Image reading lens, image reading device, and image forming apparatus |
| CN105607225A (en) * | 2014-11-18 | 2016-05-25 | Kolen株式会社 | Photographing lens optical system |
| CN205581382U (en) * | 2016-02-02 | 2016-09-14 | 广东旭业光电科技股份有限公司 | Optical lens and camera device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2015060005A (en) * | 2013-09-17 | 2015-03-30 | 株式会社リコー | Image reading lens, image reading device, and image forming apparatus |
| CN105607225A (en) * | 2014-11-18 | 2016-05-25 | Kolen株式会社 | Photographing lens optical system |
| CN205581382U (en) * | 2016-02-02 | 2016-09-14 | 广东旭业光电科技股份有限公司 | Optical lens and camera device |
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