CN106199920B - A kind of phtographic lens and photographic equipment - Google Patents
A kind of phtographic lens and photographic equipment Download PDFInfo
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- CN106199920B CN106199920B CN201610864883.XA CN201610864883A CN106199920B CN 106199920 B CN106199920 B CN 106199920B CN 201610864883 A CN201610864883 A CN 201610864883A CN 106199920 B CN106199920 B CN 106199920B
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- lens
- phtographic
- phtographic lens
- dipped beam
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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
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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
- G02B13/18—Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration
Abstract
This application discloses a kind of phtographic lenses, and along optical axis, direction includes successively from the object side to image side：The first lens with positive light coke, at dipped beam axis towards the side surface of object side be convex surface, with negative power the second lens, at dipped beam axis towards the side surface of image side be concave surface；The third lens with positive light coke, at dipped beam axis towards the side surface of object side be convex surface；The 4th lens with positive light coke, at dipped beam axis towards the side surface of object side be concave surface；The 5th lens with negative power and an imaging surface；It is provided with optical filter between 5th lens and imaging surface；It is provided with diaphragm between object plane and the first lens；Wherein, the phtographic lens meets relational expression：‑0.5<(R6+R7)/(R6‑R7)<0.2, R2>0,0.2<Dbf/D<0.22,5<F/D34<10, while ensureing high pixel, realize that phtographic lens is miniaturized, aberration is small, large aperture.Disclosed herein as well is a kind of photographic equipments, have said effect.
Description
Technical field
The present invention relates to camera work fields to further relate to a kind of include above-mentioned more specifically to a kind of phtographic lens
The photographic equipment of phtographic lens.
Background technology
Currently, the high-end phtographic lens applied to smart mobile phone has reached 13,000,000 or higher pixel, not with economy
Disconnected development and society are constantly progressive, and the smart mobile phone of high-pixel camera has squeezed out the market of traditional low-side digital camera gradually
Share becomes the indispensable portable electronic products of people's trip.However, the smart mobile phone generally existing lens length with high pixel
It is long to cause camera lens volume larger, miniaturization and micromation are cannot achieve, lens aperture is small, causes image quality partially dark, camera lens is deposited
In a degree of aberration, cause image color reproducibility relatively low.
Therefore, how while ensureing high pixel, realize that camera lens is miniaturized, aberration is small, large aperture is art technology
Personnel are badly in need of technical problems to be solved.
Invention content
In order to solve the above technical problems, the present invention provides a kind of phtographic lens, while ensureing high pixel, photography is realized
Camera lens is miniaturized, aberration is small, large aperture.
A kind of phtographic lens, along optical axis, direction includes successively from the object side to image side：
The first lens with positive light coke, at dipped beam axis towards the side surface of the object side be convex surface；
The second lens with negative power, at the dipped beam axis towards the side surface of the image side be concave surface；
The third lens with positive light coke, at the dipped beam axis towards the side surface of the object side be convex surface；
The 4th lens with positive light coke, at the dipped beam axis towards the side surface of the object side be concave surface；
The 5th lens with negative power and an imaging surface；
It is provided with optical filter between 5th lens and the imaging surface；
It is provided with diaphragm between the object plane and first lens；
Wherein, the phtographic lens meets relational expression：R2>0, -0.5<(R6+R7)/(R6-R7)<- 0.2,0.2<Dbf/D<
0.22,5<F/D34<10；R2 is that first lens are towards the radius of curvature of the side surface of the object side, R6 at dipped beam axis
The third lens are the third lens in institute towards the radius of curvature of the side surface of the object side, R7 at the dipped beam axis
The radius of curvature of the side surface at dipped beam axis towards the image side is stated, Dbf is the back focal length of the phtographic lens, and D is described takes the photograph
The optics overall length of shadow camera lens, F are the focal length of the phtographic lens, and D34 is the third lens and the 4th lens described in
Spacing distance on optical axis direction.
Preferably, in above-mentioned phtographic lens, the phtographic lens meets relational expression：5<F3/F4<10, wherein F3 is institute
The focal length of the third lens is stated, F4 is the focal length of the 4th lens.
Preferably, in above-mentioned phtographic lens, the phtographic lens meets relational expression：2<R3/R2<5, wherein R3 is institute
The first lens are stated at the dipped beam axis towards the radius of curvature of the side surface of the image side.
Preferably, in above-mentioned phtographic lens, the phtographic lens meets relational expression：1.4<F12/F<1.6, wherein F12
For the combined focal length of first lens and second lens, F is the focal length of the phtographic lens.
Preferably, in above-mentioned phtographic lens, the phtographic lens meets relational expression：2.0<T4/D45<2.5, -0.3<
(R4+R5)/(R4-R5)<0.2, wherein D45 be the 4th lens and the 5th lens on the optical axis direction between
Gauge is from T4 is the thickness of the 4th lens in the direction of the optical axis, and R4 is second lens direction at the dipped beam axis
The radius of curvature of the side surface of the object side, R5 is for second lens towards the side surface of the image side at the dipped beam axis
Radius of curvature.
Preferably, in above-mentioned phtographic lens, the phtographic lens meets relational expression：|SAG8|/T4<0.65,25<Vd2<
35,50<Vd3<60, wherein | SAG8 | for the 4th lens object side speed hang down amount maximum value, Vd2 be described second thoroughly
The Abbe number of mirror, Vd3 are the Abbe number of the third lens.
Preferably, in above-mentioned phtographic lens, the phtographic lens meets relational expression：0.7<F/R3<0.9, -0.3<(R4+
R5)/(R4-R5)<0.2,2.0<T4/D45<2.5,1.5<N1&N3&N5&N4<1.6, wherein N1 is the folding of first lens
Rate is penetrated, N3 is the refractive index of the third lens, and N4 is the refractive index of the 4th lens, and N5 is the refraction of the 5th lens
Rate.
Preferably, in above-mentioned phtographic lens, the phtographic lens meets relational expression：-5<F3/F<3,1.5<N1&N3&
N5&N4<1.6, -0.18<F/R7<- 0.12, wherein R7 is for the third lens towards the image side at the dipped beam axis
The radius of curvature of side surface.
Preferably, in above-mentioned phtographic lens, the optical filter is infrared fileter.
The present invention also provides a kind of photographic equipments, including phtographic lens as described in any one of the above embodiments.
It can be seen from the above technical proposal that a kind of phtographic lens provided by the present invention, from the object side to image side along optical axis
Direction includes successively：Along optical axis, direction includes successively from the object side to image side：The first lens with positive light coke, at dipped beam axis
Side surface towards the object side is convex surface, radius of curvature R 2>0；The second lens with negative power, in the dipped beam axis
The side surface of place towards the image side is concave surface；The third lens with positive light coke, towards the object at the dipped beam axis
The side surface of side is convex surface；The 4th lens with positive light coke are towards the side surface of the object side at the dipped beam axis
Concave surface；The 5th lens with negative power and an imaging surface；It is provided with filter between 5th lens and the imaging surface
Mating plate；It is provided with diaphragm between the object plane and first lens；Wherein, the phtographic lens meets relational expression：R2>
0, -0.5<(R6+R7)/(R6-R7)<- 0.2,0.2<Dbf/D<0.22,5<F/D34<10；Wherein, R2 is that first lens exist
Towards the radius of curvature of the side surface of the object side at dipped beam axis, R6 be the third lens at the dipped beam axis described in
The radius of curvature of the side surface of object side, R7 is for the third lens towards the song of the side surface of the image side at the dipped beam axis
Rate radius, Dbf are the back focal length of the phtographic lens, and D is the optics overall length of the phtographic lens, and F is the phtographic lens
Focal length, D34 are the third lens and spacing distance of the 4th lens on the optical axis direction.
A kind of phtographic lens provided by the invention, since the first lens are bent towards the side surface of the object side at dipped beam axis
Rate radius R2>0, aberration can be effectively reduced, the imaging performance of phtographic lens is improved, improves imaging pixel；Due to phtographic lens
In, lens focus F and the third lens and spacing distance D34 of the 4th lens on the optical axis direction meet 5<
F/D34<The correction for being conducive to spherical aberration when 10, reduces aberration, and improves imaging pixel；Since diaphragm is preposition, i.e., the object plane with
It is arranged between first lens, large aperture can be set, to increase the light throughput of phtographic lens, ensures that phtographic lens obtains
Phtographic lens is set to meet Parameter Conditions by carrying out collocation adjustment to five eyeglasses to the brightness of picture：R2>0, -0.5<(R6+
R7)/(R6-R7)<- 0.2,0.2<Dbf/D<0.22,5<F/D34<10, can microfilming lens length, realize phtographic lens
Micromation.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 is the phtographic lens structural schematic diagram that the embodiment of the present invention one provides；
Fig. 2 is the curvature of field and distortion figure that the phtographic lens that the embodiment of the present invention one provides is tested；
Fig. 3 is the spherical aberration figure that the phtographic lens that the embodiment of the present invention one provides is tested；
Fig. 4 is phtographic lens structural schematic diagram provided by Embodiment 2 of the present invention；
Fig. 5 is the curvature of field and distortion figure that phtographic lens provided by Embodiment 2 of the present invention is tested；
Fig. 6 is the spherical aberration figure that phtographic lens provided by Embodiment 2 of the present invention is tested；
Fig. 7 is the phtographic lens structural schematic diagram that the embodiment of the present invention three provides；
Fig. 8 is the curvature of field and distortion figure that the phtographic lens that the embodiment of the present invention three provides is tested；
Fig. 9 is the spherical aberration figure that the phtographic lens that the embodiment of the present invention three provides is tested；
Figure 10 is the phtographic lens structural schematic diagram that the embodiment of the present invention four provides；
Figure 11 is the curvature of field and distortion figure that the phtographic lens that the embodiment of the present invention four provides is tested；
Figure 12 is the spherical aberration figure that the phtographic lens that the embodiment of the present invention four provides is tested.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Referring to Fig. 1, Fig. 1 is a kind of phtographic lens structural schematic diagram provided in an embodiment of the present invention.
In a kind of specific embodiment, a kind of phtographic lens is provided, direction is successively from the object side to image side along optical axis
Including：
The first lens 01 with positive light coke, at dipped beam axis towards the side surface of the object side be convex surface；With negative
Second lens 02 of focal power, at the dipped beam axis towards the side surface of the image side be concave surface；
The third lens 03 with positive light coke, at the dipped beam axis towards the side surface of the object side be convex surface；
The 4th lens 04 with positive light coke, at the dipped beam axis towards the side surface of the object side be concave surface；
The 5th lens 05 with negative power and an imaging surface 07；
It is provided with optical filter 06 between 5th lens 05 and the imaging surface 07；
It is provided with diaphragm 08 between the object plane and first lens 01；
Wherein, the phtographic lens meets relational expression：R2>0, -0.5<(R6+R7)/(R6-R7)<- 0.2,0.2<Dbf/D<
0.22,5<F/D34<10；
Wherein, the first lens 01 are convex surface towards the side surface of the object side at dipped beam axis, and R2 is the court at dipped beam axis
Towards the side surface of the image side it is concave surface at dipped beam axis, radius of curvature is to the radius of curvature of the side surface of the object side
R3；Second lens 02 are concave surface, radius of curvature R5, at dipped beam axis towards the side surface of the image side at the dipped beam axis
Side surface towards the object side is convex surface, radius of curvature R4；The third lens 03 are at the dipped beam axis towards the object side
Side surface be convex surface, radius of curvature R6 towards the side surface of the image side is aspherical, curvature half at the dipped beam axis
Diameter is R7；4th lens 04 are concave surface, the direction at the dipped beam axis towards the side surface of the object side at the dipped beam axis
The side surface of image side is aspherical；5th lens 05 are aspherical towards the side surface of object side at the dipped beam axis, described
At dipped beam axis towards the side surface of image side be it is aspherical；Dbf is the back focal length of the phtographic lens, and D is the phtographic lens
Optics overall length, F are the focal length of the phtographic lens, and D34 is the third lens 03 and the 4th lens 04 along the optical axis
Spacing distance on direction；Imaging surface 07 focuses light, for being presented as body.
First lens 01 have positive light coke, and the side surface of object side is convex surface, to provide positive refracting power, by object space light
Line is assembled, the field angle of the Curvature Effect camera lens of the side surface of object side, the R2 in present embodiment>0 so that phtographic lens
Field angle increases, and coordinates diaphragm 08, ensures enough light throughputs, improves image quality.
Second lens 02 have negative power, and the side surface of image side is concave surface, to provide negative refracting power, corrects first
Aberration caused by the excessive positive refracting power of lens 01.
The third lens 03 have positive light coke, and the side surface of object side is convex surface, to provide positive refracting power, the 4th lens
04 has positive light coke, and the side surface of object side is concave surface, to provide positive refracting power, corrects system aberration.
Due to the first lens 01 at dipped beam axis towards the side surface radius of curvature R 2 of the object side>0, it can effectively reduce
Aberration improves the imaging performance of phtographic lens, improves imaging pixel；Due in phtographic lens, phtographic lens focal length F and described the
Three lens 03 and spacing distance D34s of the 4th lens 04 on the optical axis direction, meet 5<F/D34<Be conducive to when 10
The correction of spherical aberration, reduces aberration, and improves imaging pixel；Since diaphragm 08 is preposition, i.e., in the object plane and first lens 01
Between be arranged, large aperture can be set, to increase the light throughput of phtographic lens, ensure that phtographic lens obtains the bright of picture
Degree, by carrying out collocation adjustment to five eyeglasses, makes phtographic lens meet Parameter Conditions：R2>0, -0.5<(R6+R7)/(R6-
R7)<- 0.2,0.2<Dbf/D<0.22,5<F/D34<10, can microfilming lens length, realize phtographic lens micromation.
It is the central idea of the present invention above, following will be combined with the drawings in the embodiments of the present invention, to the embodiment of the present invention
In scheme carry out clear, complete description, it is clear that described embodiments are only a part of the embodiments of the present invention, without
It is whole embodiment.Based on the embodiments of the present invention, those skilled in the art are without making creative work
The every other embodiment obtained, belongs to protection scope of the present invention.
On the basis of the above embodiment, " the high pixel phtographic lens of large aperture with following four embodiments with 1/3
For illustrate, this lens group uses 5 aspherical lens, by the collocation of each eyeglass can effective control system optics
Overall length TTL≤4.3mm, field angle FOV≤79.5 degree, F-number Fno=2.0, while meeting miniaturization also have compared with
There is enough luminous fluxes to ensure high brightness, have for relatively other phtographic lenses for the quality of height imaging, the design of large aperture
There are small difficulty of processing, light weight, thickness thin, the advantage that visual angle is big, manufacturing cost is low.In addition, wherein a piece of in five lens
Lens can effectively correct all kinds of aberrations such as the curvature of field, astigmatism, ratio chromatism, with tree using high refraction material while cost-effective
Fat material replaces glass, and moulding process maturation is more mature, solves glass lens and is produced caused by processing difficulties, price height
Product yield is low and the higher problem of cost.
Embodiment one：
Please refer to Fig.1,2 and 3, Fig. 1 is the phtographic lens structural schematic diagram that provides of the embodiment of the present invention one；Fig. 2 is this hair
The curvature of field and distortion figure that bright embodiment one provides；Fig. 3 is the spherical aberration figure that the embodiment of the present invention one provides.
Diaphragm 08, the first lens 01, the second lens 02, the third lens 03, the 4th lens with same optical centre axis
04, the 5th lens 05, optical filter 06 and imaging surface 07.On the basis of the above embodiment, phtographic lens also meets item
Part：-0.3<(R4+R5)/(R4-R5)<0.2,5<F3/F4<10,2<R3/R2<5,1.4<F12/F<1.6,2.0<T4/D45<
2.5, wherein F3 is the focal length of the third lens 03, and F4 is the focal length of the 4th lens 04, and F12 is first lens
01 with the combined focal lengths of second lens 02, F is the focal length of the phtographic lens, D45 be the 4th lens 04 with it is described
Spacing distance of 5th lens 05 on the optical axis direction, T4 are the thickness of the 4th lens 04 in the direction of the optical axis.Tool
The specific data of each optical element of body are shown in Table 1, table 2 and table 3.Wherein, ASP is aspherical, and K values represent circular cone coefficient,
A4 to A16 represents even aspheric surface coefficient, A2 0.
Show that the optical distortion of this phtographic lens is less than 2% by the obtained curvature of field and distortion figure 2 and spherical aberration Fig. 3, field
Song is less than 0.1mm, and spherical aberration is less than 0.1mm, and imaging distortion is small, and clarity is high.The phtographic lens, which has, ensures shooting picture
Effect is clear, and color is full, and stereovision is abundant.The phtographic lens obtained using technical solution disclosed in the above embodiments of the present application
With good imaging effect.Meanwhile there is phtographic lens the field angle increased and the design of larger aperture to ensure phtographic lens
Obtain the brightness of picture.By carrying out collocation adjustment to five eyeglasses, phtographic lens is made to meet Parameter Conditions：R2>0, -0.5<
(R6+R7)/(R6-R7)<- 0.2, -0.3<(R4+R5)/(R4-R5)<0.2,0.2<Dbf/D<0.22,5<F/D34<10,5<F3/
F4<10,2<R3/R2<5,1.4<F12/F<1.6,2.0<T4/D45<2.5, can microfilming lens length, realize photographic mirror
Head micromation.
Embodiment two：
Fig. 4,5 and 6 are please referred to, Fig. 4 is phtographic lens structural schematic diagram provided by Embodiment 2 of the present invention；Fig. 5 is this hair
The curvature of field and distortion figure that the phtographic lens that bright embodiment two provides is tested；Fig. 6 is provided by Embodiment 2 of the present invention
The spherical aberration figure that phtographic lens is tested.
Diaphragm 08, the first lens 01, the second lens 02, the third lens 03, the 4th lens with same optical centre axis
04, the 5th lens 05, optical filter 06 and imaging surface 07.On the basis of the above embodiment, phtographic lens also meets condition |
SAG8|/T4<0.65,25<Vd2<35,50<Vd3<60,5<F3/F4<10,2<R3/R2<5,1.4<F12/F<1.6, wherein |
SAG8 | it speeds the maximum value of the amount of hanging down for the object side of the 4th lens 04, Vd2 is the Abbe number of second lens 02, and Vd3 is
The Abbe number of the third lens 03.The specific data of each optical device participate in table 4, table 5 and table 6.Wherein, ASP is non-
Spherical surface, K values represent circular cone coefficient, and A4 to A16 represents even aspheric surface coefficient, A2 0.
Show that the optical distortion of this phtographic lens is less than 2% by the obtained curvature of field and distortion figure 5 and spherical aberration Fig. 6, field
Song is less than 0.1mm, and spherical aberration is less than 0.1mm, and imaging distortion is small, and clarity is high.The phtographic lens is ensureing the same of high pixel
When so as to shoot that picture effect is clear, and color is full, stereovision is abundant.Using technical solution disclosed in the above embodiments of the present application
Obtained phtographic lens has good imaging effect.Meanwhile there is phtographic lens the field angle increased and larger aperture to set
Meter ensures that phtographic lens obtains the brightness of picture.By carrying out collocation adjustment to five eyeglasses, phtographic lens is made to meet parameter item
Part：R2>0,0.2<Dbf/D<0.22,5<F/D34<10,5<F3/F4<10, -0.5<(R6+R7)/(R6-R7)<- 0.2, -0.3<
(R4+R5)/(R4-R5)<0.2,2<R3/R2<5,1.4<F12/F<1.6,2.0<T4/D45<2.5, can microfilming camera lens it is long
Degree realizes phtographic lens micromation.
Embodiment three：
Fig. 7,8 and 9 are please referred to, Fig. 7 is the phtographic lens structural schematic diagram that the embodiment of the present invention three provides；Fig. 8 is this hair
The curvature of field and distortion figure that the phtographic lens that bright embodiment three provides is tested；Fig. 9 is what the embodiment of the present invention three provided
The spherical aberration figure that phtographic lens is tested.
Diaphragm 08, the first lens 01, the second lens 02, the third lens 03, the 4th lens with same optical centre axis
04, the 5th lens 05, optical filter 06 and imaging surface 07.On the basis of the above embodiment, phtographic lens meets condition 0.7
<F/R3<0.9, -0.3<(R4+R5)/(R4-R5)<0.2,5<F3/F4<10,2.0<T4/D45<2.5,1.5<N1<1.6, and 1.5
<N3<1.6, and 1.5<N4<1.6, and 1.5<N5<1.6, wherein N1 is the refractive index of first lens 01, and N3 is described the
The refractive index of three lens 03, N4 are the refractive index of the 4th lens 04, and N5 is the refractive index of the 5th lens 05.Specific number
According to participation table 7, table 8 and table 9.Wherein, ASP is aspherical, and K values represent circular cone coefficient, and A4 to A16 represents even aspheric surface system
Number, A2 0.
Show that the optical distortion of this phtographic lens is less than 2% by the obtained curvature of field and distortion figure 8 and spherical aberration Fig. 9, field
Song is less than 0.1mm, and spherical aberration is less than 0.1mm, and imaging distortion is small, and clarity is high.The phtographic lens is ensureing the same of high pixel
When so as to shoot that picture effect is clear, and color is full, stereovision is abundant.Using technical solution disclosed in the above embodiments of the present application
Obtained phtographic lens has good imaging effect.Meanwhile there is phtographic lens the field angle increased and larger aperture to set
Meter ensures that phtographic lens obtains the brightness of picture.By carrying out collocation adjustment to five eyeglasses, phtographic lens is made to meet parameter item
Part：R2>0, -0.5<(R6+R7)/(R6-R7)<- 0.2,0.2<Dbf/D<0.22,5<F/D34<10,0.7<F/R3<0.9, -0.3
<(R4+R5)/(R4-R5)<0.2,5<F3/F4<10,2.0<T4/D45<2.5,1.5<N1&N3&N4&N5<1.6, it can reduce and take the photograph
Shadow lens length realizes phtographic lens micromation.
Example IV：
0,11 and 12 are please referred to Fig.1, Figure 10 is the phtographic lens structural schematic diagram that the embodiment of the present invention four provides；Figure 11 is
The curvature of field and distortion figure that the phtographic lens that the embodiment of the present invention four provides is tested；Figure 12 is that the embodiment of the present invention four carries
The spherical aberration figure that the phtographic lens of confession is tested.
Diaphragm 08, the first lens 01, the second lens 02, the third lens 03, the 4th lens with same optical centre axis
04, the 5th lens 05, optical filter 06 and imaging surface 07.On the basis of the above embodiment, phtographic lens meets condition 2<
R3/R2<5,5<F3/F4<10, -5<F3/F<3,1.5<N1<1.6, and 1.5<N3<1.6, and 1.5<N4<1.6, and 1.5<N5<
1.6, -0.18<F/R7<- 0.12, wherein R7 is for the third lens 03 towards the side surface of the image side at dipped beam axis
Radius of curvature.Specific data are referring to table 10, table 11 and table 12.Wherein, ASP is aspherical, and K values represent circular cone coefficient, and A4 is extremely
A16 represents even aspheric surface coefficient, A2 0.
Show that the optical distortion of this phtographic lens is less than 2% by the obtained curvature of field and distortion figure 11 and spherical aberration Figure 12,
The curvature of field is less than 0.1mm, and spherical aberration is less than 0.1mm, and imaging distortion is small, and clarity is high.The phtographic lens is ensureing high pixel
Simultaneously so that shooting picture effect is clear, color is full, and stereovision is abundant.Using technical side disclosed in the above embodiments of the present application
The phtographic lens that case obtains has good imaging effect.Meanwhile phtographic lens has the field angle increased and larger aperture
Design ensures that phtographic lens obtains the brightness of picture.By carrying out collocation adjustment to five eyeglasses, phtographic lens is made to meet parameter
Condition：R2>0, -0.5<(R6+R7)/(R6-R7)<- 0.2,0.2<Dbf/D<0.22,5<F/D34<10,2<R3/R2<5,5<F3/
F4<10, -5<F3/F<3,1.5<N1&N3&N4&N5<1.6, -0.18<F/R7<- 0.12, lens length can be reduced, realizes mirror
Head micromation.
It should be pointed out that in above-mentioned all embodiments 10 of five lens aspherical meet condition：
Wherein,Respectively corresponding A 2, A4, A6, A8, A10, A12,
A14, A16 asphericity coefficient, the z indicate that the Z coordinate value of lens each point, r indicate the Y axis coordinate value of each point on lens surface, c
For the inverse of the radius of curvature R of lens surface, k is circular cone coefficient.
Further, in above-mentioned phtographic lens, optical filtering is provided between the 5th lens 05 and the imaging surface 07
Piece 06.Further, the purpose of setting of optical filter 06 is so that imaging is more clear and color is more bright.Optical filter 06 can
Infrared fileter 06 or other types of optical filter 06 are thought, within protection domain.
Phtographic lens provided by the invention is directed to current high pixel shooting mobile phone and designs, the spy with high pixel large aperture
Point increases the light-inletting quantity of shooting process, ensure that the light levels of shooting picture under low light environment, 75~80 degree of wide-angles design,
Make mobile phone that there is larger coverage.Under the premise of meeting micromation wide-angle, higher image quality can guarantee：Appropriate light
It learns lens structure and eyeglass is laid out and so that light is gentler by lens, the amendment of aberration is more reasonable, can further correct
The aberration of off-axis visual field, imaging distortion is small, and clarity is high, can ensure shooting figure while taking into account wide-angle and large aperture
Piece is clear, and color is full, and stereovision is abundant.
The present invention also provides a kind of photographic equipments, including phtographic lens as described in any one of the above embodiments, have said effect,
Details are not described herein.
Each embodiment is described by the way of progressive in this specification, the highlights of each of the examples are with other
The difference of embodiment, just to refer each other for identical similar portion between each embodiment.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest range caused.
Claims (10)
1. a kind of phtographic lens, which is characterized in that along optical axis, direction includes successively from the object side to image side：
The first lens with positive light coke, at dipped beam axis towards the side surface of the object side be convex surface；
The second lens with negative power, at the dipped beam axis towards the side surface of the image side be concave surface；
The third lens with positive light coke, at the dipped beam axis towards the side surface of the object side be convex surface；
The 4th lens with positive light coke, at the dipped beam axis towards the side surface of the object side be concave surface；
The 5th lens with negative power and an imaging surface；
It is provided with optical filter between 5th lens and the imaging surface；
It is provided with diaphragm between object plane and first lens；
Wherein, the phtographic lens meets relational expression：R2>0, -0.5<(R6+R7)/(R6-R7)<- 0.2,0.2<Dbf/D<
0.22,5<F/D34<10；
Wherein, R2 be first lens at dipped beam axis towards the radius of curvature of the side surface of the object side, R6 is described the
For three lens towards the radius of curvature of the side surface of the object side at the dipped beam axis, R7 is the third lens in the dipped beam
Towards the radius of curvature of the side surface of the image side at axis, Dbf is the back focal length of the phtographic lens, and D is the phtographic lens
Optics overall length, F is the focal length of the phtographic lens, and D34 is the third lens and the 4th lens along the optical axis side
Upward spacing distance.
2. phtographic lens as described in claim 1, which is characterized in that the phtographic lens meets relational expression：5<F3/F4<10,
Wherein, F3 is the focal length of the third lens, and F4 is the focal length of the 4th lens.
3. phtographic lens as claimed in claim 2, which is characterized in that the phtographic lens meets relational expression：2<R3/R2<5,
Wherein, R3 be first lens at the dipped beam axis towards the radius of curvature of the side surface of the image side.
4. phtographic lens as claimed in claim 3, which is characterized in that the phtographic lens meets relational expression：1.4<F12/F<
1.6, wherein F12 is the combined focal length of first lens and second lens, and F is the focal length of the phtographic lens.
5. phtographic lens as claimed in claim 4, which is characterized in that the phtographic lens meets relational expression：2.0<T4/D45<
2.5, -0.3<(R4+R5)/(R4-R5)<0.2, wherein D45 is the 4th lens and the 5th lens in the optical axis side
Upward spacing distance, T4 are the thickness of the 4th lens in the direction of the optical axis, and R4 is second lens in the dipped beam
Towards the radius of curvature of the side surface of the object side at axis, R5 is for second lens towards the image side at the dipped beam axis
Side surface radius of curvature.
6. phtographic lens as claimed in claim 4, which is characterized in that the phtographic lens meets relational expression：|SAG8|/T4<
0.65,25<Vd2<35,50<Vd3<60, wherein | SAG8 | for the 4th lens object side speed hang down amount maximum value, Vd2
For the Abbe number of second lens, Vd3 is the Abbe number of the third lens.
7. phtographic lens as claimed in claim 2, which is characterized in that the phtographic lens meets relational expression：0.7<F/R3<
0.9, -0.3<(R4+R5)/(R4-R5)<0.2,2.0<T4/D45<2.5,1.5<N1&N3&N5&N4<1.6, wherein N1 is described
The refractive index of first lens, N3 are the refractive index of the third lens, and N4 is the refractive index of the 4th lens, and N5 is described the
The refractive index of five lens.
8. phtographic lens as claimed in claim 3, which is characterized in that the phtographic lens meets relational expression：-5<F3/F<3,
1.5<N1&N3&N5&N4<1.6, -0.18<F/R7<- 0.12, wherein R7 is the third lens direction at the dipped beam axis
The radius of curvature of the side surface of the image side.
9. such as claim 1 to 8 any one of them phtographic lens, which is characterized in that the optical filter is infrared fileter.
10. a kind of photographic equipment, which is characterized in that including phtographic lens as described in any one of claim 1 to 9.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610864883.XA CN106199920B (en) | 2016-09-29 | 2016-09-29 | A kind of phtographic lens and photographic equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610864883.XA CN106199920B (en) | 2016-09-29 | 2016-09-29 | A kind of phtographic lens and photographic equipment |
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| CN106199920A CN106199920A (en) | 2016-12-07 |
| CN106199920B true CN106199920B (en) | 2018-09-18 |
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| CN110501806B (en) * | 2019-08-16 | 2021-04-09 | 诚瑞光学(常州)股份有限公司 | Image pickup optical lens |
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| CN103869453A (en) * | 2013-03-19 | 2014-06-18 | 瑞声声学科技(深圳)有限公司 | Imaging lens |
| CN104007539A (en) * | 2014-01-27 | 2014-08-27 | 玉晶光电(厦门)有限公司 | Optical imaging lens and electronic device with optical imaging lens applied |
| CN204166189U (en) * | 2014-05-12 | 2015-02-18 | 康达智株式会社 | Pick-up lens |
| CN106054356A (en) * | 2016-01-27 | 2016-10-26 | 瑞声科技(新加坡)有限公司 | Image capturing lens |
| CN206115010U (en) * | 2016-09-29 | 2017-04-19 | 广东旭业光电科技股份有限公司 | Photographic lens and photography equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014080561A1 (en) * | 2012-11-21 | 2014-05-30 | コニカミノルタ株式会社 | Imaging optical system, imaging device and digital device |
| JP2014142499A (en) * | 2013-01-24 | 2014-08-07 | Konica Minolta Inc | Imaging lens, imaging optical device, and digital equipment |
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Patent Citations (5)
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|---|---|---|---|---|
| CN103869453A (en) * | 2013-03-19 | 2014-06-18 | 瑞声声学科技(深圳)有限公司 | Imaging lens |
| CN104007539A (en) * | 2014-01-27 | 2014-08-27 | 玉晶光电(厦门)有限公司 | Optical imaging lens and electronic device with optical imaging lens applied |
| CN204166189U (en) * | 2014-05-12 | 2015-02-18 | 康达智株式会社 | Pick-up lens |
| CN106054356A (en) * | 2016-01-27 | 2016-10-26 | 瑞声科技(新加坡)有限公司 | Image capturing lens |
| CN206115010U (en) * | 2016-09-29 | 2017-04-19 | 广东旭业光电科技股份有限公司 | Photographic lens and photography equipment |
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