CN103869452A - Imaging lens, imaging device and portable terminal - Google Patents
Imaging lens, imaging device and portable terminal Download PDFInfo
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- CN103869452A CN103869452A CN201310655423.2A CN201310655423A CN103869452A CN 103869452 A CN103869452 A CN 103869452A CN 201310655423 A CN201310655423 A CN 201310655423A CN 103869452 A CN103869452 A CN 103869452A
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Abstract
The invention provides a small imaging lens which corrects various aberrations well, is of F2.4 or less brightness and is composed of six lenses. The imaging lens is provided with a positive lens group, which is equipped with a first lens (L1), a second lens (L2), a third lens (L3), a fourth lens (L4) and a fifth lens (L5), and a negative sixth lens (L6) in order from an object side. The imaging lens (10) satisfies a conditional expression (1): 0.3<=f/(2*f1*Fno)<1.0 (1), wherein f is a focus distance of a whole system of the imaging lens (10), f1 is a focus distance of the first lens (L1), and Fno is an F value of the whole system of the imaging lens (10). Through the f lower than an upper limit of the conditional expression (1), a spherical aberration generated in the first lens (L1) can be suppressed to be small; and, on the other hand, through the f higher than a lower limit, the focal power of the first lens (L1) can be moderately maintained, and miniaturization of the overall length of the imaging lens (10) can be realized.
Description
Technical field
The present invention relates to imaging lens system and possess camera head and the portable terminal device of this imaging lens system.
Background technology
In recent years, follow to be mounted with and used CCD(Charge Coupled Device: charge-coupled device (CCD)) type imageing sensor, CMOS(Complementary Metal Oxide Semiconductor: complementary metal oxide semiconductor (CMOS)) the universal increase of portable terminal device of camera head of the imaging apparatus such as type imageing sensor, the product that is mounted with following camera head is provided to market, in this camera head in order to obtain the image of high image quality more and group has entered to have the imaging apparatus of high pixel count.Imaging apparatus and the maximization with high pixel count accompany, but in recent years, the high-precision refinement of pixel make good progress, and makes the imaging apparatus miniaturization of high pixel count.Because imaging apparatus is to high performance and miniaturization development, therefore, in the method for designing of imaging lens system in the past, be easy to partially lean on the so-called side of looking in the distance.But, though imaging apparatus is to high-performance and miniaturization development, do not wish partially by the side of looking in the distance.In addition, the imaging lens system using for the imaging apparatus of this high-precision refinement, the exploring power of having relatively high expectations, but exploring power because F value exists restriction, as in the past, the F value of about F2.8 cannot obtain good performance.Therefore, the bright imaging lens system below the F2.4 of the imaging apparatus of applicable high pixelation, high-precision refinement and miniaturization of requirement.As the imaging lens system of this purposes, propose to compare by 4 pieces or 5 pieces of lens that form, by 6 pieces of imaging lens systems that form can realizing heavy caliber ratioization and high performance.
As the imaging lens system forming by 6 pieces, the imaging lens system forming is in the following manner disclosed: possess successively from object side and there are the 1st lens of positive light coke, the 2nd lens with negative power, opening diaphragm, have positive light coke the 3rd lens, have negative power the 4th lens, there are the 5th lens of positive light coke and there are the 6th lens (for example patent documentation 1) of negative power.
But the opening diaphragm of the imaging lens system of recording in above-mentioned patent documentation 1 is configured in the rear of the 2nd lens, must increases the total length of imaging lens system in order to ensure good heart characteristic far away, thereby be not suitable for miniaturization.
In addition, in the structure similar to above-mentioned patent documentation 1, the imaging lens system forming is in the following manner disclosed: from object side possess successively have positive light coke the 1st lens, have negative power the 2nd lens, have negative power the 3rd lens, have positive light coke the 4th lens, there are the 5th lens of positive light coke and there are the 6th lens (for example patent documentation 2) of negative power.
But, the insufficient and enough miniaturizations of energy hard to say of the aberration correction of imaging lens system recorded in above-mentioned patent documentation 2.In addition, F value is that F2.8 is darker, cannot corresponding high pixelation and high performance in recent years.
Patent documentation 1: TOHKEMY 2012-155223 communique
Patent documentation 2: No. 2012/0188654 instructions of U.S. Patent Application Publication
Summary of the invention
The present invention completes in view of the problem points of background technology just, and its object is, provides a kind of than type was more small-sized in the past, and proofreaied and correct well each aberration have brightness below F2.4 by 6 pieces of imaging lens systems that form.
Here be the standard of small camera lens, but in the present invention, to meet the small-sized target that turns to of level of following formula.By meeting this scope, can realize the miniaturization and of camera head entirety.
L/2Y<1.00…(9)
Wherein,
L is the distance from the lens face of the most close object side of imaging lens system whole system to the optical axis of picture side focus, and 2Y is the shooting face diagonal long (diagonal line length of the rectangle effective pixel area of solid-state imager) of imaging apparatus.
Here, so-called as side focus, refer to that the parallel rays parallel with optical axis is incident to the picture point in the situation of imaging lens system.In addition, between the face and picture side focal position of the most close picture side at imaging lens system, in the situation of the parallel flats such as the seal glass of configuration optics low pass filter, infrared intercepting filter or imaging apparatus encapsulation, in the value of parallel flat part being calculated on the basis of air scaled distance to above-mentioned L.
For value L/2Y, the more preferably scope of following formula.
L/2Y<0.90…(9)’
In order to achieve the above object, imaging lens system involved in the present invention is for making subject look like to be imaged on the imaging lens system on imaging apparatus, it has the brightness below F2.4, from object side in order, by there is positive light coke and near optical axis convex surface towards the 1st lens of object side, there are the 2nd lens of negative power, the 3rd lens, the 4th lens, the 5th lens, there is negative power and near optical axis concave surface towards picture side the 6th lens form, the 6th lens be aspherical shape as side, with the intersection point of optical axis beyond position there is extreme value, opening diaphragm is configured in between the picture side of object side to the 2 lens of the 1st lens, and meet following conditional.
0.3≤f/(2×f1×Fno)<1.0…(1)
Wherein, f is the focal length of imaging lens system whole system, and f1 is the focal length of the 1st lens, and Fno is the F value of imaging lens system whole system.
Be to possess in order from object side for obtaining basic structure small-sized and that proofreaied and correct well imaging lens system imaging lens system, involved in the present invention of aberration: have positive light coke and near convex surface optical axis towards the 1st lens of object side, the 2nd lens with negative power, the 3rd lens, the 4th lens, the 5th lens and there is negative power and near optical axis concave surface towards the 6th lens of picture side.Dispose in order from object side possess the 1st lens, the 2nd lens, the 3rd lens, the 4th lens and the positive lens groups of the 5th lens and negative these lens arrangements the 6th lens, so-called long distance type are the structures that is conducive to the miniaturization of imaging lens system total length.
In addition, by being made as above negative lens by 2 pieces in 6 pieces of formations, the face that makes to have disperse function increase and easily proofread and correct that amber hereby cuts down and, can obtain even picture periphery has all been guaranteed the imaging lens system of good imaging performance.In addition, by the object side of the 1st lens is made as to convex surface, can make the synthetic principal point position of imaging lens system whole system more be partial to object side, be conducive to the miniaturization of imaging lens system total length.
In addition,, by being made as aspheric surface by what be disposed at the most close the 6th lens as side as side, can proofread and correct well the each aberration at picture periphery.In addition, by be made as with the intersection point of optical axis beyond position there is the aspherical shape of extreme value, be easy to guarantee the heart characteristic far away of picture side beam.Here, so-called " extreme value ", refer to when having considered in the case of the curve of the lens curved surface in effective radius or lens section configuration, connect plane or the wiring on aspheric surface summit become line or the point in the plane vertical with optical axis or the such aspheric surface of line.
In addition,, by opening diaphragm being disposed between the picture side of object side to the 2 lens of the 1st lens, can realize the miniaturization of imaging lens system total length and good heart characteristic far away simultaneously.In addition, by the F value of imaging lens system is made as to the brightness below F2.4, can obtain can be corresponding to the imaging lens system of high performance in recent years.In addition, above what is called is disposed at opening diaphragm between the picture side of object side to the 2 lens of the 1st lens, and the meaning is to look like the configuration as benchmark of point on the optical axis of side using the point on the optical axis of the object side of the 1st lens and the 2nd lens.
For corresponding to high performance, conditional (1) is come corresponding by brightness F value being made as below 2.4, in addition, the focal length of noticing the 1st lens in 6 pieces of lens formations is one of reason that the F value of imaging lens system entirety is exerted an influence, consequently, conditional (1) is the NA for stipulating the 1st lens monomer, carries out the miniaturization of imaging lens system total length and the conditional of good aberration correction.
First, the meaning of conditional (1) is described.The F value Fno of imaging lens system whole system is by the focal length of imaging lens system whole system is made as to f, and the bore of imaging lens system whole system is made as to D, thereby with
Fno=f/D
Obtain.Here, suppose the focal length of imaging lens system whole system to be normalized to 1, opening diaphragm is disposed near the 1st lens, the focal length of the 1st lens is made as to f1, the F value FnoL1 of the 1st lens monomer becomes:
FnoL1=(f1/f)/(1/Fno)=(f1×Fno)/f
Because the opening number NA of optical system is by NA=1/(2 × Fno) obtain, therefore the opening number NAL1 of the 1st lens monomer becomes:
NAL1=1/(2×((f1×Fno)/f)=f/(2×f1×Fno)
, the opening number NAL1 of the 1st lens monomer is by approximate value f/(2 × f1 × Fno) represent.
By making the value f/(2 × f1 × Fno of the above-mentioned conditional (1) relevant to opening number NAL1) lower than the upper limit, the NA of the 1st lens monomer can be not excessive thus, thus can the spherical aberration producing in the 1st lens be suppressed littlely.On the other hand, by making its lower limit higher than above-mentioned conditional (1), can suitably maintain thus the 1st power of lens, and can realize the miniaturization of imaging lens system total length.
In addition, for value f/(2 × f1 × Fno), the more preferably scope of following formula.
0.3≤f/(2×f1×Fno)<0.8…(1)’
For concrete side of the present invention, in above-mentioned imaging lens system, meet following conditional (2).
-1.1<f6/f<-0.1…(2)
Wherein, f6 is the focal length of the 6th lens, and f is the focal length of imaging lens system whole system.
Conditional (2) is that the focal length for suitably setting the 6th lens is guaranteed back focus and realized the shortening of imaging lens system total length and the conditional of aberration correction simultaneously.By making the value f6/f of conditional (2) higher than lower limit, the negative power of the 6th lens can be excessively not strong thus, thereby be easy to guarantee back focus.On the other hand, by making its upper limit lower than conditional (2), can moderately maintain the negative power of the 6th lens, therefore can shorten imaging lens system total length, and the chromatic aberation on axis calibration well.
In addition, for value f6/f, the more preferably scope of following formula.
-1.0<f6/f<-0.2…(2)’
In other sides of the present invention, meet following conditional (3).
-1.8<f2/f<-0.1…(3)
Wherein, f2 is the focal length of the 2nd lens, and f is the focal length of imaging lens system whole system.
Conditional (3) is the conditional of the focal length for suitably setting the 2nd lens.By making the value f2/f of conditional (3) lower than the upper limit, the negative power of the 2nd lens can not crossed by force to more than desirability thus, thereby can reduce, distortion poor at the intelligent image of periphery.On the other hand, by making its lower limit higher than conditional (3), can moderately maintain thus the negative power of the 2nd lens, reduce that amber hereby cuts down and, correction is effective aspect curvature of the image.
In addition, for value f2/f, the more preferably scope of following formula.
-1.7<f2/f<-0.2…(3)’
In other sides in addition of the present invention, meet following conditional (4).
0.3<r1/f<0.6…(4)
Wherein, r1 is the radius-of-curvature of the object side of the 1st lens, and f is the focal length of imaging lens system whole system.
Conditional (4) is that the radius-of-curvature for establishing the local object side of setting the 1st lens suitably realizes the shortening of imaging lens system total length and the conditional of aberration correction.If consider that the 1st lens have stronger curvature at object side mask, by making the value r1/f of conditional (4) lower than the upper limit, can moderately maintain thus the focal power of the object side of the 1st lens, the synthetic principal point of the 1st lens and the 2nd lens can be configured in to more close object side, and can shorten imaging lens system total length.On the other hand, by making its lower limit higher than conditional (4), the 1st lens can be not excessive more than desirability in the focal power of object side thus, thereby can be by the high order spherical aberration producing in the 1st lens, intelligent image is poor suppresses littlely.
In addition, for value r1/f, the more preferably scope of following formula.
0.35<r1/f<0.55…(4)’
In other side in addition of the present invention, meet following conditional (5).
0.02<THIL2/f<0.15…(5)
Wherein, THIL2 is the thickness on the optical axis of the 2nd lens, and f is the focal length of imaging lens system whole system.
Conditional (5) is the conditional of the thickness on the optical axis for suitably setting the 2nd lens.By making the value THIL2/f of conditional (5) higher than lower limit, the thickness of the 2nd lens can be excessively not thin thus, and can not damage formability.On the other hand, by making its upper limit lower than conditional (5), the thickness of the 2nd lens can be not blocked up thus, is easy to guarantee the lens interval before and after the 2nd lens, and its result can be carried out the shortening of imaging lens system total length.
In addition, for value THIL2/f, the more preferably scope of following formula.
0.03<THIL2/f<0.12…(5)’
In other sides in addition of the present invention, meet following conditional (6).
0.03<THIL6/f<0.30…(6)
Wherein, THIL6 is the thickness on the optical axis of the 6th lens, and f is the focal length of imaging lens system whole system.
Conditional (6) is the conditional of the thickness on the optical axis for suitably setting the 6th lens.By making the value THIL6/f of conditional (6) higher than lower limit, the thickness of the 6th lens can be excessively not thin thus, and can not damage formability.On the other hand, by making its upper limit lower than conditional (6), the thickness of the 6th lens can be not blocked up thus, is easy to guarantee back focus.
In addition, for value THIL6/f, the more preferably scope of following formula.
0.05≤THIL6/f < 0.25 ... (6) ' or
0.10<THIL6/f<0.30…(6)”
Or, can be also the scope of following formula.
0.15<THIL6/f<0.25…(6-2)
In other side in addition of the present invention, the 2nd lens have the shape of concave surface towards picture side.By by the 2nd lens be made as concave surface as side, can make to there is stronger disperse function by the 2nd higher lens of light height, therefore, can proofread and correct well curvature of the image, distortion.
In other side in addition of the present invention, meet following conditional (7).
0≤ν5-ν6<50…(7)
Wherein, ν 5 is Abbe numbers of the 5th lens, and ν 6 is Abbe numbers of the 6th lens.
Conditional (7) is the conditional of the chromatic aberation for proofreading and correct well imaging lens system whole system.By making the value ν 5-ν 6 of conditional (7) higher than lower limit, the chromatic aberation such as chromatic aberation, multiplying power chromatic aberation on axis calibration balancedly thus.On the other hand, by making its upper limit lower than conditional (7), can form imaging lens system with the nitre material of easily starting with thus.
In addition, for value ν 5-ν 6, the more preferably scope of following formula.
0≤ν5-ν6<45…(7)’
In other side in addition of the present invention, meet following conditional (8).
20<ν1-ν2<70…(8)
Wherein, ν 1 is the Abbe number of the 1st lens, and ν 2 is Abbe numbers of the 2nd lens.
Conditional (8) is the conditional of the chromatic aberation for proofreading and correct well imaging lens system whole system.By making the value ν 1-ν 2 of conditional (8) higher than lower limit, the balancedly chromatic aberation such as chromatic aberation, multiplying power chromatic aberation on axis calibration.On the other hand, by making its upper limit lower than conditional (8), can form imaging lens system with the nitre material of easily starting with.
In addition, for value ν 1-ν 2, the more preferably scope of following formula.
25<ν1-ν2<65…(8)’
In other side in addition of the present invention, the 1st lens have meniscus shape.Like this, by the 1st lens are made as to meniscus shape, can make the synthetic principal point position of imaging lens system whole system more be partial to object side, therefore can shorten imaging lens system total length.
In other side in addition of the present invention, also have and in fact there is no dioptric lens.
To achieve these goals, camera head involved in the present invention possesses above-mentioned imaging lens system and imaging apparatus.The imaging lens system of the application of the invention, the camera head that can obtain thering is the small-sized of the following brightness of F2.4 and proofread and correct well each aberration.
To achieve these goals, portable terminal device involved in the present invention has the camera head that has as described above the small-sized of the following brightness of F2.4 and proofreaied and correct well each aberration.
Accompanying drawing explanation
Fig. 1 is the figure that the camera head of the imaging lens system to possessing an embodiment of the invention describes.
Fig. 2 is the cut-open view that the state to remaining on imaging lens system in lens barrel portion etc. describes.
Fig. 3 is the block diagram that the portable mobile terminal of the camera head to possessing Fig. 1 describes.
Fig. 4 A of Fig. 4 and 4B are respectively the stereographic maps of face side and the rear side of portable mobile terminal.
Fig. 5 is the cut-open view of the imaging lens system of embodiment 1.
Fig. 6 A~6C of Fig. 6 is the aberration diagram of the imaging lens system of embodiment 1.
Fig. 7 is the cut-open view of the imaging lens system of embodiment 2.
Fig. 8 A~8C of Fig. 8 is the aberration diagram of the imaging lens system of embodiment 2.
Fig. 9 is the cut-open view of the imaging lens system of embodiment 3.
Figure 10 A~10C of Figure 10 is the aberration diagram of the imaging lens system of embodiment 3.
Figure 11 is the cut-open view of the imaging lens system of embodiment 4.
Figure 12 A~12C of Figure 12 is the aberration diagram of the imaging lens system of embodiment 4.
Figure 13 is the cut-open view of the imaging lens system of embodiment 5
Figure 14 A~14C of Figure 14 is the aberration diagram of the imaging lens system of embodiment 5.
Figure 15 is the cut-open view of the imaging lens system of embodiment 6.
Figure 16 A~16C of Figure 16 is the aberration diagram of the imaging lens system of embodiment 6.
Figure 17 is the cut-open view of the imaging lens system of embodiment 7.
Figure 18 A~18C of Figure 18 is the aberration diagram of the imaging lens system of embodiment 7.
Figure 19 is the cut-open view of the imaging lens system of embodiment 8.
Figure 20 A~20C of Figure 20 is the aberration diagram of the imaging lens system of embodiment 8.
Figure 21 is the cut-open view of the imaging lens system of embodiment 9.
Figure 21 A~21C of Figure 22 is the aberration diagram of the imaging lens system of embodiment 9.
Figure 23 is the cut-open view of the imaging lens system of embodiment 10.
Figure 24 A~24C of Figure 24 is the aberration diagram of the imaging lens system of embodiment 10.
Figure 25 is the cut-open view of the imaging lens system of embodiment 11.
Figure 26 A~26C of Figure 26 is the aberration diagram of the imaging lens system of embodiment 11.
Figure 27 is the cut-open view of the imaging lens system of embodiment 12.
Figure 28 A~28C of Figure 28 is the aberration diagram of the imaging lens system of embodiment 12.
Figure 29 is the cut-open view of the imaging lens system of embodiment 13.
Figure 30 A~30C of Figure 30 is the aberration diagram of the imaging lens system of embodiment 13.
Embodiment
Below, with reference to Fig. 1 etc., the imaging lens system as an embodiment of the invention is described.In addition, in Fig. 1, illustrative imaging lens system 10 is structures identical with the imaging lens system 11 of embodiment 1 described later.
Fig. 1 is the cut-open view describing as the camera module of the imaging lens system of an embodiment of the invention possessing.
L/2Y<1.00…(9)
Here, L is that the lens face (object side S11) of close object side is to the distance the optical axis of picture side focus from imaging lens system 10 whole systems, and 2Y is the shooting face diagonal long (diagonal line length of the rectangle effective pixel area of imaging apparatus 51) of imaging apparatus 51.So-called as side focus, refer to that the parallel rays parallel with optical axis AX is incident to the picture point in the situation of imaging lens system 10.By meeting this scope, can realize the miniaturization and of camera module 50 entirety.
In addition, between the face (as side S52) and picture side focal position of the most close picture side at imaging lens system 10, dispose in the situation of the parallel flat F such as seal glass of optics low pass filter, infrared intercepting filter or imaging apparatus encapsulation, in the value of parallel flat F part being calculated on the basis of air scaled distance to above-mentioned L.In addition the scope of following formula more preferably.
L/2Y<0.90…(9)'
In imaging lens system 10 sides of imaging apparatus 51, by not shown supporting member, parallel flat F is configured and fixed in the mode that covers imaging apparatus 51 grades.
Fig. 2 is the cut-open view that the state to remaining on imaging lens system 10 grades in lens barrel portion 54 describes.The 1st~6th lens L1~L6 that forms imaging lens system 10 has respectively the flange portion 39 that supports use, engages with adjacent lens via flange portion 39.Between these lens L1~L6, dispose shadow shield 31,32,33,34,35 across flange portion 39.Wherein any one shadow shield 31 is the opening diaphragm S of the brightness of regulation imaging lens system 10.Shadow shield 32,33,34,35 beyond opening diaphragm S is for preventing the generation of parasitic light.
Then,, with reference to Fig. 3, Fig. 4 A and 4B, the example that the mobile phone of illustrative camera module 50 in Fig. 1 and other portable mobile terminal 300 are installed is described.
Portable mobile terminal 300 is portable mobile terminal or portable terminal devices of smart mobile phone type, and it possesses: camera head 100, and it has camera module 50; Control part (CPU) 310, the each portion of its centralized control, and the execution program corresponding with each processing; Show operating portion 320, it is the touch panel of demonstration and data, the reflection of making a video recording etc. of communication association and the operation of accepted user; Operating portion 330, it comprises power switch etc.; Wireless communication part 340, it is for realizing the various information communications between external server etc. via antenna 341; Storage part (ROM) 360, it stores each data that the system program of portable mobile terminal (portable terminal device) 300, various handling procedure and Termination ID etc. need; And temporary transient storage part (RAM) 370, it is as the operating area of camera data etc. of temporarily depositing various handling procedures, data, deal with data or the camera head 100 carried out by control part 310.
When optical system drive division 105 carries out focus, exposure etc. in the control by control part 103, make the driving mechanism 55a of imaging lens system 10 move to control the state of imaging lens system 10.Optical system drive division 105, by making driving mechanism 55a action that certain lenses or whole lens in imaging lens system 10 are suitably moved along optical axis AX, makes imaging lens system 10 carry out focus action.
Imaging apparatus drive division 107, in the time exposing by the control of control part 103 etc., is controlled the action of imaging apparatus 51.Particularly, imaging apparatus drive division 107, according to timing signal, is controlled imaging apparatus 51 and is carried out turntable driving.In addition, imaging apparatus drive division 107 is converted to Digital Image Data using the detection signal of exporting from imaging apparatus 51 or as the simulating signal of photoelectric conversion signal.In addition, imaging apparatus drive division 107 can be to the picture signal detecting by imaging apparatus 51, implements to distort the various image processing such as correction, look correction, compression.
Here, the photography action of the portable mobile terminal 300 that comprises above-mentioned camera head 100 is described.When after the filming apparatus pattern that portable mobile terminal 300 is set as moving as filming apparatus, carry out monitoring (demonstration direct picture) and the image photography of subject and carry out.Under monitoring, the shooting face I(that the picture of the subject obtaining via imaging lens system 10 is imaged onto imaging apparatus 51 is with reference to Fig. 1) on.Imaging apparatus 51 is by imaging apparatus drive division 107 turntable driving, and exports the simulating signal of the conduct of 1 picture opto-electronic conversion output corresponding with light image every fixed cycle imaging.
Being attached in the circuit of imaging apparatus 51, according to the each former colour content of RGB, this simulating signal is suitably gained after adjustment, be converted to numerical data.This numerical data is comprised that pixel interpolation is processed and Y proofreaies and correct the colour processing processing of processing, the luminance signal Y of generating digital value and colour difference signal Cb, Cr(view data), and be stored in video memory 108.Stored numerical data is read termly from video memory 108, and generate its vision signal, via control part 103 and control part 310, output to and show in operating portion 320.
This demonstration operating portion 320 plays a role as view finder under monitoring, shows in real time photographed images.Under this state, the operation input of carrying out via demonstration operating portion 320 according to user at any time, sets focus, the exposure etc. of imaging lens system 10 by the driving of optical system drive division 105.
Under this monitor state, user shows operating portion 320, the Still image data of photographing by suitably operating.According to the content of operation that shows operating portion 320, read the view data that leaves 1 frame in video memory 108 in, and compress by imaging apparatus drive division 107.The view data of this compression is via control part 103 and control part 310, is for example recorded in temporary transient storage part 370 grades.
In addition, above-mentioned camera head 100 is examples that are applicable to camera head of the present invention, and the present invention is not limited thereto.
; camera module 50 or the camera head that imaging lens system 10 has been installed are not limited to be built in the portable mobile terminal 300 of smart mobile phone type; also can be built in mobile phone, PHS(Personal Handyphone System: personal handy phone system) etc. in; can also be built in PDA(Personal Digital Assistant: personal digital assistant), in panel computer, removable computer, digital filming apparatus, device for filming image etc.
Below, return to Fig. 1, the imaging lens system 10 as an embodiment of the invention is at length described.Imaging lens system 10 shown in Fig. 1 makes subject picture in the upper imaging of shooting face (the being projected face) I of imaging apparatus 51, it has the brightness below F2.4, from object side in order, in fact by have positive light coke and near convex surface optical axis AX towards the 1st lens L1, opening diaphragm S, the 2nd lens L2 with negative power, the 3rd lens L3, the 4th lens L4, the 5th lens L5 of object side, there is negative power and near optical axis AX concave surface form towards the 6th lens L6 as side.In imaging lens system 10, the 6th lens L6's is aspherical shape as side S62, with the intersection point of optical axis AX beyond position P there is extreme value.Opening diaphragm S is between the picture side S22 of object side S11 to the 2 lens L2 from the 1st lens L1, in illustrated example, particularly adjacent with the outer rim as side S12 of the 1st lens L1 and configure.Imaging lens system 10 meets the conditional (1) having illustrated.
0.3≤f/(2×f1×Fno)<1.0…(1)
Wherein, f is the focal length of imaging lens system 10 whole systems, and f1 is the focal length of the 1st lens L1, and Fno is the F value of imaging lens system 10 whole systems.
The imaging lens system 10 of present embodiment possesses the 1st lens L1 for configuring in order from object side, the structure of the so-called long distance type of the positive lens groups of the 2nd lens L2, the 3rd lens L3, the 4th lens L4 and the 5th lens L5 and negative the 6th lens L6.The structure of long distance type is the structure that is conducive to the miniaturization of imaging lens system 10 total lengths.
In addition, by being made as above negative lens by 2 pieces in the imaging lens system of 6 pieces of formations 10, the face that makes to have disperse function increase and easily proofread and correct amber hereby cut down (Petzval) and, thereby can obtain even picture periphery has also been guaranteed the imaging lens system 10 of good imaging performance.In addition, by the object side S11 of the 1st lens L1 is made as to convex surface, can make the synthetic principal point position of imaging lens system 10 whole systems more be partial to object side, be conducive to the miniaturization of imaging lens system 10 total lengths.
In addition,, by being made as aspheric surface by what be configured in the most close the 6th lens L6 as side as side S62, can proofread and correct well the each aberration at picture periphery.In addition, by by the 6th lens L6 as side S62 be made as with optical axis AX intersection point beyond position P there is the aspherical shape of extreme value, be easy to guarantee the heart characteristic far away of picture side beam.Here, so-called " extreme value ", refers in the curve of the lens section configuration in effective radius, and connect plane or the wiring on aspheric surface summit become the point in the plane vertical with optical axis AX or the such aspheric surface of line.So-called effective radius, refers to the scope in the face of the light beam scioptics face of angle imaging in shooting.
In addition,, by opening diaphragm S being configured in between the picture side S22 of object side S11 to the 2 lens L2 of the 1st lens L1, can make the miniaturization of imaging lens system 10 total lengths and good heart characteristic far away realize simultaneously.In addition, by the F value of imaging lens system 10 is made as to the brightness below F2.4, can obtain can be corresponding with high performance in recent years imaging lens system 10.
Conditional (1) is the opening number (NA) for stipulating the 1st lens L1 monomer, carries out the miniaturization of imaging lens system 10 total lengths and the conditional of aberration correction well.In addition, the value f/(2 × f1 × Fno of conditional (1)) be equivalent to as described above the opening number of the 1st lens L1 monomer.
By making the upper limit of this value lower than conditional (1), the opening number (NA) of the 1st lens L1 monomer can be not excessive, can the spherical aberration producing in the 1st lens L1 be suppressed littlely.On the other hand, by making this value higher than lower limit, can moderately maintain the focal power of the 1st lens L1, and can realize the miniaturization of imaging lens system 10 total lengths.In addition the more preferably scope of following formula of imaging lens system 10.
0.3≤f/(2×f1×Fno)<0.8…(1)’
The imaging lens system 10 of embodiment, except above-mentioned conditional (1), also meets the conditional (2) having illustrated.
-1.1<f6/f<-0.1…(2)
Wherein, f6 is the focal length of the 6th lens L6, and f is the focal length of imaging lens system 10 whole systems.
The imaging lens system 10 of embodiment more preferably meets following conditional (2) '.
-1.0<f6/f<-0.2…(2)’
The imaging lens system 10 of embodiment, except above-mentioned conditional (1) etc., also meets the conditional (3) having illustrated.
-1.8<f2/f<-0.1…(3)
Wherein, f2 is the focal length of the 2nd lens L2, and f is the focal length of imaging lens system 10 whole systems.
The imaging lens system 10 of embodiment more preferably meets following conditional (3) '.
-1.7<f2/f<-0.2…(3)’
The imaging lens system 10 of embodiment, except above-mentioned conditional (1) etc., also meets the conditional (4) having illustrated.
0.3<r1/f<0.6…(4)
Wherein, r1 is the radius-of-curvature of the object side S11 of the 1st lens L1, and f is the focal length of imaging lens system 10 whole systems.
The imaging lens system 10 of embodiment more preferably meets following conditional (4) '.
0.35<r1/f<0.55…(4)’
The imaging lens system 10 of embodiment, except above-mentioned conditional (1) etc., also meets the conditional (5) having illustrated.
0.02<THIL2/f<0.15…(5)
Wherein, THIL2 is the thickness of the 2nd lens L2 on optical axis AX, and f is the focal length of imaging lens system 10 whole systems.
The imaging lens system 10 of embodiment more preferably meets following conditional (5) '.
0.03<THIL2/f<0.12…(5)’
The imaging lens system 10 of embodiment, except above-mentioned conditional (1) etc., also meets the conditional (6) having illustrated.
0.03<THIL6/f<0.30…(6)
Wherein, THIL6 is the thickness of the 6th lens L6 on optical axis AX, and f is the focal length of imaging lens system 10 whole systems.
The imaging lens system 10 of embodiment more preferably meets following conditional (6) ' or (6) ".
0.05≤THIL6/f<0.25…(6)’
0.10<THIL6/f<0.30…(6)”
Or imaging lens system 10 also can meet following formula.
0.15<THIL6/f<0.25…(6-2)
The imaging lens system 10 of embodiment, except above-mentioned conditional (1) etc., also meets the conditional (7) having illustrated.
0≤ν5-ν6<50…(7)
Wherein, ν 5 is Abbe numbers of the 5th lens L5, and ν 6 is Abbe numbers of the 6th lens L6.
The imaging lens system 10 of embodiment more preferably meets following conditional (7) '.
0≤ν5-ν6<45…(7)’
The imaging lens system 10 of embodiment, except above-mentioned conditional (1) etc., also meets the conditional (8) having illustrated.
20<ν1-ν2<70…(8)
Wherein, ν 1 is the Abbe number of the 1st lens L1, and ν 2 is Abbe numbers of the 2nd lens L2.
The imaging lens system 10 of embodiment more preferably meets following conditional (8) '.
25<ν1-ν2<65…(8)’
In the imaging lens system 10 of embodiment, also have and in fact there is no dioptric lens.
The camera head 100 of embodiment possesses above-mentioned imaging lens system 10 and imaging apparatus 51.
The portable mobile terminal (portable terminal device) 300 of embodiment possesses small-sized and proofreaied and correct well the camera head 100 of each aberration as described above.
(embodiment)
Below, represent the embodiment of imaging lens system of the present invention.Mark for each embodiment is as described below.
F: the focal length of imaging lens system whole system
FB: back focus
F:F value
2Y: the shooting face diagonal of imaging apparatus is long
ENTP: entrance pupil position (from the 1st distance to entrance pupil position)
EXTP: penetrate exit pupil position (from shooting face to the distance of penetrating exit pupil position)
H1: principal point position, front side (from the 1st distance to principal point position, front side)
H2: rear side principal point position (distance from final face to rear side principal point position)
R: radius-of-curvature
D: interval above axle
Nd: for the flexion rate of the d line of lens material
ν d: the Abbe number of lens material
In each embodiment, the face that records " * " after each label is the face with aspherical shape, and vertex of surface is made as to initial point, and X-axis is defined as to optical axis AX direction, to be made as h with the height of optical axis AX vertical direction, represent aspheric shape by following " numerical expression 1 ".
[numerical expression 1]
Wherein,
The asphericity coefficient of Ai:i time
R: radius-of-curvature
K: the constant of the cone
(embodiment 1)
Below represent the each element of entirety of the imaging lens system of embodiment 1.
f=3.47mm
fB=0.29mm
F=1.81
2Y=5.7mm
ENTP=0.4mm
EXTP=-2.5mm
H1=-0.44mm
H2=-3.18mm
In following table 1, represent the data of the lens face of embodiment 1.
(table 1)
In following table 2, represent the asphericity coefficient of the lens face of embodiment 1.
(table 2)
The 1st
K=-0.14072E+01,A4=0.38929E-01,A6=0.11304E-01,A8=0.15016E-01,
A10=-0.58592E-01,A12=0.75804E-01,A14=-0.34646E-01
The 2nd
K=0.50000E+02,A4=0.78856E-01,A6=-0.13149E-01,A8=-0.16713E+00,
A10=0.36760E+00,A12=-0.34516E+00,A14=0.11532E+00
The 3rd
K=-0.47956E+02,A4=0.53604E-01,A6=0.25727E-01,A8=-0.11048E+00,
A10=0.12403E+00,A12=-0.53290E-01
The 4th
K=-0.82498E+01,A4=0.79973E-01,A6=0.13324E-01,A8=-0.38437E-01,
A10=0.38815E-01
The 5th
K=0.16769E+02,A4=-0.22231E+00,A6=0.18631E+00,A8=-0.38232E+00,
A10=0.31551E+00,A12=-0.15211E+00
The 6th
K=-0.25636E+02,A4=-0.16643E+00,A6=0.27573E+00,
A8=-0.37975E+00,
A10=0.31971E+00,A12=-0.15613E+00,A14=0.32579E-01
The 7th
K=-0.50000E+02,A4=-0.12109E+00,A6=0.13641E+00,A8=-0.55292E-01,
A10=0.43084E-02,A12=0.30013E-02,A14=-0.46902E-03
The 8th
K=0.0,A4=-0.10875E+00,A6=-0.74101E-02,A8=-0.13541E-01,
A10=0.19732E-01,A12=-0.11943E-01,A14=0.30788E-02
The 9th
K=0.50000E+02,A4=0.23826E-02,A6=-0.39241E-01,A8=-0.37907E-01,
A10=0.38522E-01,A12=-0.10795E-01,A14=0.11212E-02
The 10th
K=-0.40370E+01,A4=-0.40310E-01,A6=-0.13923E-01,A8=-0.37676E-02,
A10=0.45008E-02,A12=0.16133E-02,A14=-0.53944E-03
The 11st
K=0.68701E+01,A4=0.71583E-01,A6=-0.24897E+00,A8=0.19277E+00,
A10=-0.73475E-01,A12=0.13043E-01,A14=-0.67098E-03
The 12nd
K=-0.68557E+01,A4=-0.70387E-01,A6=0.21581E-01,A8=-0.55183E-02,
A10=0.72807E-03,A12=-0.38086E-04,A14=-0.30918E-06
In addition, (comprise the lens data of table) after this, use E(such as 2.5E-02) represent 10 index (for example 2.5 × 10
-02).
In following table 3, represent the simple lens data of embodiment 1.
(table 3)
Fig. 5 is the cut-open view that represents imaging lens system 11 grades of embodiment 1.Imaging lens system 11 possesses: have positive light coke and two the 1st protruding lens L1 at optical axis AX periphery, there is negative power and the 2nd lens L2 to the protruding falcate of object side at optical axis AX periphery, there is negative power and the 3rd lens L3 to the protruding falcate of object side at optical axis AX periphery, there is positive light coke and the 4th lens L4 to the protruding falcate of object side at optical axis AX periphery, there is positive light coke and approach two protruding the 5th lens L5 of plano-convex at optical axis AX periphery, and there are negative power and two the 6th recessed lens L6 at optical axis AX periphery.Whole lens L1~L6 are formed by plastic material.On the picture side S12 of the 1st lens L1, dispose opening diaphragm S.In addition, can, between the light emergence face of the 6th lens L6 and shooting face (image planes) I, configure the parallel flat F of suitable thickness.The seal glass of parallel flat F supposition optics low pass filter, IR cutoff filter, solid-state imager etc.
Fig. 6 A~6C represents the aberration diagram (spherical aberration, astigmatism and distortion) of the imaging lens system 11 of embodiment 1.
In embodiment 1, as the countermeasure of parasitic light, between each lens L1~L6, dispose shadow shield.With reference to Fig. 2, the diameter (diaphragm diameter) that is configured in shadow shield 31 between a pair of lens L1, L2 and is opening diaphragm S is in the scope of 0.88~0.92mm left and right, and the 1st shadow shield 31 is that the distance (aperture position) on the summit of the object side S11 of opening diaphragm S to the 1 lens L1 is in the scope of 0.57~0.74mm left and right.The diameter (diaphragm diameter) that is configured in the 2nd shadow shield 32 between lower a pair of lens L2, L3 is in the scope of 0.93~0.98mm left and right, and the 2nd shadow shield 32 is in the scope of 1.09~1.15mm left and right to the distance (aperture position) on the summit of the object side S11 of the 1st lens L1.The diameter (diaphragm diameter) that is configured in the 3rd shadow shield 33 between lower a pair of lens L3, L4 is in the scope of 1.17~1.43mm left and right, and the 3rd shadow shield 33 is in the scope of 1.43~1.65mm left and right to the distance (aperture position) on the summit of the object side S11 of the 1st lens L1.The diameter (diaphragm diameter) that is configured in the 4th shadow shield 34 between lower a pair of lens L4, L5 is in the scope of 1.49~1.61mm left and right, and the 4th shadow shield 34 is in the scope of 1.88~2.13mm left and right to the distance (aperture position) on the summit of the object side S11 of the 1st lens L1.
(embodiment 2)
Below represent the each element of entirety of the imaging lens system of embodiment 2.
f=3.85mm
fB=0.43mm
F=2.3
2Y=5.72mm
ENTP=0.46mm
EXTP=-2.36mm
H1=-1mm
H2=-3.42mm
Following table 4 represents the data of the lens face of embodiment 2.
(table 4)
Following table 5 represents the asphericity coefficient of the lens face of embodiment 2.
(table 5)
The 1st
K=-0.57136E+01,A4=0.14992E+00,A6=-0.10653E+00,A8=0.77640E-01,
A10=-0.45663E-01,A12=0.47080E-02,A14=-0.42646E-02
The 2nd
K=-0.50000E+02,A4=0.27882E-01,A6=-0.57837E-03,A8=-0.88468E-01,
A10=0.11598E+00,A12=-0.10714E+00,A14=0.43366E-01
The 4th
K=-0.50000E+02,A4=0.42863E-01,A6=0.13435E-01,A8=0.83623E-01,
A10=-0.28926E+00,A12=0.32167E+00,A14=-0.10843E+00
The 5th
K=-0.21029E+02,A4=0.85350E-02,A6=0.42398E-01,A8=0.21305E-01,
A10=-0.12559E+00,A12=0.10567E+00,A14=-0.63732E-02
The 6th
K=-0.10000E+01,A4=-0.18417E+00,A6=-0.72235E-01,A8=0.94902E-01,
A10=-0.11135E+00,A12=0.64307E-01
The 7th
K=-0.46569E+01,A4=-0.11941E+00,A6=-0.24734E-01,A8=0.40505E-01,
A10=-0.15154E-01,A12=0.14868E-01
The 8th
K=0.15151E+01,A4=0.44378E-01,A6=0.42445E-01,A8=-0.77688E-01,
A10=0.78028E-01,A12=-0.39923E-01,A14=0.83687E-02
The 9th
K=-0.21739E+01,A4=0.30251E-01,A6=-0.11811E-01,A8=-0.74409E-04,
A10=0.35777E-03
The 10th
K=0.16452E+01,A4=0.39191E-02,A6=-0.44213E-02,A8=-0.60551E-02,
A10=0.35410E-02
The 11st
K=-0.38207E+01,A4=-0.93810E-01,A6=0.72990E-01,A8=-0.48637E-01,
A10=0.19304E-01,A12=-0.32715E-02,A14=0.12032E-03
The 12nd
K=-0.34614E+02,A4=-0.17979E-02,A6=-0.13852E-01,A8=0.43322E-02,
A10=-0.27678E-03,A12=-0.32774E-04,A14=0.32851E-05
The 13rd
K=-0.94950E+01,A4=-0.34514E-01,A6=0.78270E-02,A8=-0.24331E-02,
A10=0.44235E-03,A12=-0.47448E-04,A14=0.22967E-05
Following table 6 represents the simple lens data of embodiment 2.
(table 6)
Fig. 7 is the cut-open view of imaging lens system 12 grades of embodiment 2.Imaging lens system 12 possesses: have positive light coke and two the 1st protruding lens L1 at optical axis AX periphery, there are negative power and two the 2nd recessed lens L2 at optical axis AX periphery, there is weak positive light coke and the 3rd lens L3 to the protruding falcate of object side at optical axis AX periphery, there is positive light coke and the 4th lens L4 to the protruding falcate of picture side at optical axis AX periphery, there is positive light coke and the 5th lens L5 to the protruding falcate of picture side at optical axis AX periphery, there are negative power and two the 6th recessed lens L6 at optical axis AX periphery.Whole lens L1~L6 are formed by plastic material.Between the 1st lens L1 and the 2nd lens L2, dispose opening diaphragm S.In addition, can be between the light emergence face of the 6th lens L6 and shooting face (image planes) I, the parallel flat F of configuration suitable thickness.
Fig. 8 A~8C represents the aberration diagram (spherical aberration, astigmatism and distortion) of the imaging lens system 12 of embodiment 2.
(embodiment 3)
Below represent the each element of entirety of the imaging lens system of embodiment 3.
f=3.89mm
fB=0.59mm
F=2.0
2Y=5.7mm
ENTP=0mm
EXTP=-2.53mm
H1=-0.96mm
H2=-3.3mm
Following table 7 represents the data of the lens face of embodiment 3.
(table 7)
Following table 8 represents the asphericity coefficient of the lens face of embodiment 3.
(table 8)
The 2nd
K=-0.61775E+01,A4=0.21684E+00,A6=-0.16228E+00,A8=0.18221E+00,
A10=-0.11610E+00,A12=0.39752E-01,A14=0.63607E-03
The 3rd
K=0.41584E+02,A4=0.11697E-01,A6=0.48302E-01,A8=-0.10021E+00,
A10=0.16133E+00,A12=-0.15040E+00,A14=0.55436E-01
The 4th
K=-0.50000E+02,A4=0.98052E-02,A6=-0.12964E-02,A8=0.26605E+00,
A10=-0.68588E+00,A12=0.66387E+00,A14=-0.22781E+00
The 5th
K=0.32480E+02,A4=-0.36042E-01,A6=0.47918E-01,A8=0.33983E-01,
A10=-0.25337E+00,A12=0.23954E+00,A14=-0.66883E-01
The 6th
K=0.20717E+02,A4=-0.28718E+00,A6=-0.10631E+00,A8=0.20235E+00,
A10=-0.36581E+00,A12=0.27589E+00
The 7th
K=0.50000E+02,A4=-0.20654E+00,A6=-0.55353E-01,A8=0.65007E-01,
A10=-0.29126E-01,A12=0.40692E-01
The 8th
K=0.57372E+01,A4=0.55802E-01,A6=0.44419E-01,A8=-0.14059E+00,
A10=0.18627E+00,A12=-0.10431E+00,A14=0.22099E-01
The 9th
K=-0.21641E+01,A4=0.16013E-01,A6=-0.19776E-03,A8=0.84968E-02,
A10=-0.21706E-02
The 10th
K=-0.55540E-01,A4=-0.39174E-01,A6=0.38742E-01,A8=0.48313E-02,
A10=0.19098E-02
The 11st
K=-0.34924E+01,A4=-0.20054E+00,A6=0.14022E+00,A8=-0.89197E-01,
A10=0.44320E-01,A12=-0.87865E-02,A14=0.28323E-03
The 12nd
K=-0.50000E+02,A4=-0.36443E-02,A6=-0.21836E-01,A8=0.79889E-02,
A10=-0.60285E-03,A12=-0.79461E-04,A14=0.10003E-04
The 13rd
K=-0.11006E+02,A4=-0.44130E-01,A6=0.12092E-01,A8=-0.45247E-02,
A10=0.10333E-02,A12=-0.12744E-03,A14=0.66897E-05
Following table 9 represents the simple lens data of embodiment 3.
(table 9)
Fig. 9 is the cut-open view of imaging lens system 13 grades of embodiment 3.Imaging lens system 13 possesses: have positive light coke and approach two protruding the 1st lens L1 of plano-convex to object side at optical axis AX periphery, there are negative power and two the 2nd recessed lens L2 at optical axis AX periphery, there is weak positive light coke and the 3rd lens L3 to the protruding falcate of object side at optical axis AX periphery, there is positive light coke and the 4th lens L4 to the protruding falcate of picture side at optical axis AX periphery, there is positive light coke and the 5th lens L5 to the protruding falcate of picture side at optical axis AX periphery, there are negative power and two the 6th recessed lens L6 at optical axis AX periphery.Whole lens L1~L6 are formed by plastic material.At the object side (than the summit of the object side of the 1st lens L1 close picture side) of the 1st lens L1, dispose opening diaphragm S.In addition, can be between the light emergence face of the 6th lens L6 and shooting face (image planes) I, the parallel flat F of configuration suitable thickness.
Figure 10 A~10C represents the aberration diagram (spherical aberration, astigmatism and distortion) of the imaging lens system 13 of embodiment 3.
(embodiment 4)
Below represent the each element of entirety of the imaging lens system of embodiment 4.
f=3.66mm
fB=0.4mm
F=2.3
2Y=5.72mm
ENTP=0.4mm
EXTP=-2.33mm
H1=-0.85mm
H2=-3.26mm
Following table 10 represents the data of the lens face of embodiment 4.
(table 10)
Following table 11 represents the asphericity coefficient of the lens face of embodiment 4.
(table 11)
The 1st
K=-0.77966E+01,A4=0.21400E+00,A6=-0.26672E+00,A8=0.24718E+00,
A10=-0.17012E+00,A12=-0.14624E+00,A14=0.14737E+00
The 2nd
K=-0.45588E+02,A4=-0.34764E-01,A6=0.70251E-02,A8=-0.22160E+00,
A10=0.39624E+00,A12=-0.29953E+00,A14=0.12642E+00
The 4th
K=-0.22724E+02,A4=0.10032E+00,A6=-0.16584E-01,A8=0.16844E+00,
A10=-0.73981E+00,A12=0.16188E+01,A14=-0.99781E+00
The 5th
K=-0.50000E+02,A4=0.18211E+00,A6=-0.18920E+00,A8=0.18469E+00,
A10=-0.26828E+00,A12=0.38785E+00,A14=-0.25720E+00
The 6th
K=-0.10000E+01,A4=-0.28301E+00,A6=-0.21804E+00,A8=0.78656E-01,
A10=-0.29431E+00,A12=-0.82607E-01
The 7th
K=0.36424E+02,A4=-0.16388E+00,A6=-0.75483E-01,A8=0.97245E-01,
A10=-0.57741E-01,A12=0.51572E-01
The 8th
K=0.47091E+00,A4=0.58870E-01,A6=0.89751E-01,A8=-0.16795E+00,
A10=0.28479E+00,A12=-0.21142E+00,A14=0.58014E-01
The 9th
K=-0.71685E+00,A4=0.59157E-02,A6=-0.90259E-03,A8=-0.21768E-01,
A10=0.48384E-02
The 10th
K=0.80955E+00,A4=-0.44331E-01,A6=-0.45875E-01,A8=-0.13137E-01,
A10=0.13853E-01
The 11st
K=-0.45768E+01,A4=-0.19652E+00,A6=0.14079E+00,
A8=-0.13956E+00,
A10=0.71396E-01,A12=-0.16183E-01,A14=0.13681E-02
The 12nd
K=-0.25974E+01,A4=0.10583E-02,A6=-0.26396E-01,A8=0.98667E-02,
A10=-0.91010E-03,A12=-0.76080E-04,A14=0.13825E-04
The 13rd
K=-0.11699E+02,A4=-0.46216E-01,A6=0.15892E-01,A8=-0.64323E-02,
A10=0.15942E-02,A12=-0.19941E-03,A14=0.98822E-05
Following table 12 represents the simple lens data of embodiment 4.
(table 12)
Figure 11 is the cut-open view of imaging lens system 14 grades of embodiment 4.Imaging lens system 14 possesses: have positive light coke and two the 1st protruding lens L1 at optical axis AX periphery, there is negative power and the 2nd lens L2 to the protruding falcate of picture side at optical axis AX periphery, there is weak positive light coke and the 3rd lens L3 to the protruding falcate of picture side at optical axis AX periphery, there is positive light coke and slightly to the 4th lens L4 of the protruding falcate of picture side at optical axis AX periphery, there is positive light coke and the 5th lens L5 to the protruding falcate of picture side at optical axis AX periphery, there are negative power and two the 6th recessed lens L6 at optical axis AX periphery.Whole lens L1~L6 are formed by plastic material.Between the 1st lens L1 and the 2nd lens L2, dispose opening diaphragm S.In addition, can be between the light emergence face of the 6th lens L6 and shooting face (image planes) I, the parallel flat F of configuration suitable thickness.
Figure 12 A~12C represents the aberration diagram (spherical aberration, astigmatism and distortion) of the imaging lens system 14 of embodiment 4.
(embodiment 5)
Below represent the each element of entirety of the imaging lens system of embodiment 5.
f=3.75mm
fB=0.43mm
F=2.3
2Y=5.72mm
ENTP=0.36mm
EXTP=-2.37mm
H1=-0.91mm
H2=-3.32mm
Following table 13 represents the data of the lens face of embodiment 5.
(table 13)
Following table 14 represents the asphericity coefficient of the lens face of embodiment 5.
(table 14)
The 1st
K=-0.75537E+01,A4=0.22242E+00,A6=-0.24796E+00,A8=0.23142E+00,
A10=-0.15362E+00,A12=-0.65077E-01,A14=0.58069E-01
The 2nd
K=-0.44511E+02,A4=-0.17123E-01,A6=0.47448E-01,A8=-0.20513E+00,
A10=0.33557E+00,A12=-0.43161E+00,A14=0.25008E+00
The 4th
K=-0.19891E+02,A4=0.57607E-01,A6=0.42329E-01,A8=0.18850E+00,
A10=-0.92152E+00,A12=0.14797E+01,A14=-0.75775E+00
The 5th
K=0.26972E+01,A4=0.10182E-01,A6=0.57426E-01,A8=0.27271E-02,
A10=-0.35952E+00,A12=0.61026E+00,A14=-0.35402E+00
The 6th
K=-0.10000E+01,A4=-0.26910E+00,A6=-0.16364E+00,
A8=0.14269E+00,
A10=-0.35707E+00,A12=0.25434E+00
The 7th
K=0.50000E+02,A4=-0.16239E+00,A6=-0.96795E-01,A8=0.93200E-01,
A10=-0.40005E-01,A12=0.69349E-01
The 8th
K=0.14056E+01,A4=0.62932E-01,A6=0.69236E-01,A8=-0.18106E+00,
A10=0.28813E+00,A12=-0.20801E+00,A14=0.55414E-01
The 9th
K=-0.78900E+00,A4=0.16184E-01,A6=-0.17565E-01,A8=-0.51152E-02,
A10=-0.51957E-02
The 10th
K=0.51551E+00,A4=-0.38823E-01,A6=-0.37284E-02,A8=-0.15294E-01,
A10=0.85424E-02
The 11st
K=-0.41101E+01,A4=-0.17908E+00,A6=0.15362E+00,A8=-0.13801E+00,
A10=0.70930E-01,A12=-0.16662E-01,A14=0.11302E-02
The 12nd
K=-0.29111E+01,A4=-0.86806E-02,A6=-0.25400E-01,A8=0.10190E-01,
A10=-0.11039E-02,A12=-0.11796E-03,A14=0.28331E-04
The 13rd
K=-0.10170E+02,A4=-0.60052E-01,A6=0.20405E-01,A8=-0.71565E-02,
A10=0.16230E-02,A12=-0.19849E-03,A14=0.99929E-05
Following table 15 represents the simple lens data of embodiment 5.
(table 15)
Figure 13 is the cut-open view of imaging lens system 15 grades of embodiment 5.Imaging lens system 15 possesses: have positive light coke and two protruding the 1st lens L1, have negative power and two recessed the 2nd lens L2, have positive light coke and two protruding the 3rd lens L3, have positive light coke and the 4th lens L4 to the protruding falcate of picture side at optical axis AX periphery at optical axis AX periphery at optical axis AX periphery at optical axis AX periphery, have positive light coke and to the 5th lens L5 as the protruding falcate of side, have negative power and two the 6th recessed lens L6 at optical axis AX periphery at optical axis AX periphery.Whole lens L1~L6 are formed by plastic material.Between the 1st lens L1 and the 2nd lens L2, dispose opening diaphragm S.In addition, can be between the light emergence face of the 6th lens L6 and shooting face (image planes) I, the parallel flat F of configuration suitable thickness.
Figure 14 A~14C represents the aberration diagram (spherical aberration, astigmatism and distortion) of the imaging lens system 15 of embodiment 5.
(embodiment 6)
Below represent the each element of entirety of the imaging lens system of embodiment 6.
f=3.5mm
fB=0.28mm
F=1.9
2Y=5.7mm
ENTP=0.37mm
EXTP=-2.38mm
H1=-0.75mm
H2=-3.23mm
Following table 16 represents the data of the lens face of embodiment 6.
(table 16)
Following table 17 represents the asphericity coefficient of the lens face of embodiment 6.
(table 17)
The 1st
K=-0.14963E+01,A4=0.37991E-01,A6=0.11937E-01,A8=0.58805E-02,
A10=-0.52234E-01,A12=0.78241E-01,A14=-0.41967E-01
The 2nd
K=0.50000E+02,A4=0.55686E-01,A6=0.12884E-01,A8=-0.18486E+00,
A10=0.35413E+00,A12=-0.32738E+00,A14=0.10805E+00
The 3rd
K=-0.47956E+02,A4=0.66690E-01,A6=0.16957E-01,A8=-0.10336E+00,
A10=0.12517E+00,A12=-0.57844E-01
The 4th
K=-0.85665E+01,A4=0.88211E-01,A6=0.74948E-02,A8=-0.26455E-01,
A10=0.31873E-01
The 5th
K=0.22704E+02,A4=-0.23972E+00,A6=0.20177E+00,A8=-0.40102E+00,
A10=0.32479E+00,A12=-0.14628E+00
The 6th
K=-0.25934E+02,A4=-0.18240E+00,A6=0.27320E+00,
A8=-0.37720E+00,
A10=0.31948E+00,A12=-0.15665E+00,A14=0.33124E-01
The 7th
K=-0.50000E+02,A4=-0.12170E+00,A6=0.13393E+00,A8=-0.56058E-01,
A10=0.49401E-02,A12=0.32513E-02,A14=-0.61276E-03
The 8th
K=0.0,A4=-0.13040E+00,A6=0.22584E-02,A8=-0.75990E-02,
A10=0.19779E-01,A12=-0.12608E-01,A14=0.30114E-02
The 9th
K=0.46640E+02,A4=-0.79784E-02,A6=-0.32514E-01,A8=-0.40882E-01,
A10=0.36905E-01,A12=-0.11015E-01,A14=0.11223E-02
The 10th
K=-0.49276E+01,A4=-0.14850E-01,A6=-0.28432E-01,A8=-0.37676E-02,
A10=0.43906E-02,A12=0.15636E-02,A14=-0.50791E-03
The 11st
K=0.47399E+01,A4=0.22408E-01,A6=-0.23734E+00,A8=0.19600E+00,
A10=-0.72528E-01,A12=0.13046E-01,A14=-0.82208E-03
The 12nd
K=-0.66280E+01,A4=-0.80397E-01,A6=0.25571E-01,A8=-0.59785E-02,
A10=0.77017E-03,A12=-0.45228E-04,A14=0.23292E-06
Following table 18 represents the simple lens data of embodiment 6.
(table 18)
Figure 15 is the cut-open view of imaging lens system 16 grades of embodiment 6.Imaging lens system 16 possesses: there are positive light coke and two protruding the 1st lens L1, there is negative power and to the 2nd lens L2 of the protruding falcate of object side, there is negative power and to the 3rd lens L3 of the protruding falcate of object side, there is positive light coke and the 4th lens L4 to the protruding falcate of object side at optical axis AX periphery at optical axis AX periphery at optical axis AX periphery at optical axis AX periphery, optical axis AX periphery have positive light coke and two protruding falcates the 5th lens L5, there are negative power and two the 6th recessed lens L6 at optical axis AX periphery.Whole lens L1~L6 are formed by plastic material.Between the 1st lens L1 and the 2nd lens L2, dispose opening diaphragm S.In addition, can be between the light emergence face of the 6th lens L6 and shooting face (image planes) I, the parallel flat F of configuration suitable thickness.
Figure 16 A~16C represents the aberration diagram (spherical aberration, astigmatism and distortion) of the imaging lens system 16 of embodiment 6.
(embodiment 7)
Below represent the each element of entirety of the imaging lens system of embodiment 7.
f=3.82mm
fB=0.47mm
F=2.3
2Y=5.72mm
ENTP=0.3mm
EXTP=-2.32mm
H1=-1.1mm
H2=-3.35mm
Following table 19 represents the data of the lens face of embodiment 7.
(table 19)
Following table 20 represents the asphericity coefficient of the lens face of embodiment 7.
(table 20)
The 1st
K=-0.10843E+02,A4=0.20125E+00,A6=-0.29533E+00,A8=0.25142E+00,
A10=-0.10388E+00,A12=-0.25618E+00,A14=0.19428E+00
The 2nd
K=-0.33529E+02,A4=-0.15427E-01,A6=-0.68843E-01,A8=-0.12487E+00,
A10=0.38551E+00,A12=-0.45274E+00,A14=0.22159E+00
The 4th
K=-0.15401E+02,A4=0.63363E-01,A6=-0.99067E-01,A8=0.39611E+00,
A10=-0.91170E+00,A12=0.12729E+01,A14=-0.62300E+00
The 5th
K=-0.50000E+02,A4=-0.28717E-01,A6=0.14624E-01,A8=0.15059E+00,
A10=-0.39154E+00,A12=0.44092E+00,A14=-0.19177E+00
The 6th
K=-0.10000E+01,A4=-0.29924E+00,A6=0.67051E-01,A8=0.19809E+00,
A10=-0.27061E+00,A12=0.58611E-01
The 7th
K=0.28792E+01,A4=-0.20741E+00,A6=0.62078E-01,A8=0.11067E+00,
A10=-0.15049E+00,A12=0.58929E-01
The 8th
K=0.26891E+02,A4=-0.11984E-01,A6=0.11845E-01,A8=-0.18272E+00,
A10=0.25820E+00,A12=-0.20069E+00,A14=0.78412E-01
The 9th
K=0.48694E+01,A4=-0.47825E-01,A6=-0.14108E-01,A8=-0.15626E-01,
A10=-0.46633E-02
The 10th
K=0.61023E+01,A4=-0.76341E-01,A6=0.10724E-01,A8=-0.15220E-01,
A10=0.43459E-02
The 11st
K=-0.40698E+01,A4=-0.18933E+00,A6=0.16023E+00,
A8=-0.13912E+00,
A10=0.70011E-01,A12=-0.16408E-01,A14=0.16547E-02
The 12nd
K=-0.59359E+01,A4=-0.16999E-01,A6=-0.24440E-01,A8=0.10791E-01,
A10=-0.92014E-03,A12=-0.12665E-03,A14=0.18046E-04
The 13rd
K=-0.96562E+01,A4=-0.62322E-01,A6=0.21081E-01,A8=-0.71915E-02,
A10=0.14786E-02,A12=-0.16395E-03,A14=0.70185E-05
Following table 21 represents the simple lens data of embodiment 7.
(table 21)
Figure 17 is the cut-open view of imaging lens system 17 grades of embodiment 7.Imaging lens system 17 possesses: have positive light coke and two the 1st protruding lens L1 at optical axis AX periphery, there is negative power and the 2nd lens L2 to the protruding falcate of picture side at optical axis AX periphery, there is negative power and the 3rd lens L3 to the protruding falcate of object side at optical axis AX periphery, there is positive light coke and the 4th lens L4 to the protruding falcate of picture side at optical axis AX periphery, there is positive light coke and the 5th lens L5 to the protruding falcate of picture side at optical axis AX periphery, there are negative power and two the 6th recessed lens L6 at optical axis AX periphery.Whole lens L1~L6 are formed by plastic material.Between the 1st lens L1 and the 2nd lens L2, dispose opening diaphragm S.In addition, can be between the light emergence face of the 6th lens L6 and shooting face (image planes) I, the parallel flat F of configuration suitable thickness.
Figure 18 A~18C represents the aberration diagram (spherical aberration, astigmatism and distortion) of the imaging lens system 17 of embodiment 7.
(embodiment 8)
Below represent the each element of entirety of the imaging lens system of embodiment 8.
f=3.21mm
fB=0.3mm
F=1.92
2Y=4.5mm
ENTP=0.43mm
EXTP=-2.37mm
H1=-0.22mm
H2=-2.91mm
Following table 22 represents the data of the lens face of embodiment 8.
(table 22)
Following table 23 represents the asphericity coefficient of the lens face of embodiment 8.
(table 23)
The 1st
K=-0.65480E+01,A4=0.18797E+00,A6=-0.19825E+00,A8=0.12299E+00,
A10=-0.76975E-01,A12=-0.10646E+00,A14=0.84942E-01
The 2nd
K=-0.20000E+02,A4=-0.13587E+00,A6=0.24962E+00,
A8=-0.35481E+00,
A10=0.21461E+00,A12=-0.69539E-01,A14=0.22045E-01
The 4th
K=-0.20000E+02,A4=-0.15819E+00,A6=0.49449E+00,
A8=-0.39148E+00,
A10=-0.55004E-01,A12=0.42688E+00,A14=-0.20997E+00
The 5th
K=-0.20000E+02,A4=0.33518E-01,A6=0.12797E+00,A8=-0.69438E-01,
A10=-0.72683E-01,A12=0.29022E-01
The 6th
K=-0.29118E+01, A4=-0.18973E+00, A6=-0.19264E+00,
A8=0.23698E-02,
A10=-0.63692E-01,A12=-0.27203E+00
The 7th
K=-0.12225E+02,A4=-0.16471E+00,A6=-0.36243E-01,A8=0.32087E-01,
A10=-0.21981E+00,A12=0.16764E+00,A14=0.45769E-02
The 8th
K=-0.20000E+02, A4=-0.28620E+00, A6=0.13065E+00,
A8=-0.21024E+00,
A10=0.29224E+00,A12=-0.11959E+00
The 9th
K=-0.17667E+02, A4=-0.23304E+00, A6=0.12614E+00,
A8=-0.13492E+00,
A10=0.10658E+00,A12=-0.30093E-01
The 10th
K=0.13948E+02, A4=-0.11963E+00, A6=0.21346E+00,
A8=-0.19423E+00,
A10=0.10605E+00,A12=-0.28047E-01,A14=0.27080E-02
The 11st
K=-0.37872E+01, A4=-0.17696E+00, A6=0.10383E+00,
A8=-0.67348E-01,
A10=0.43415E-01,A12=-0.87258E-02
The 12nd
K=0.20000E+02,A4=-0.16336E+00,A6=0.32008E-01,A8=0.67650E-02,
A10=-0.41444E-02,A12=0.11153E-02,A14=-0.15692E-03
The 13rd
K=-0.53403E+01,A4=-0.80977E-01,A6=0.31148E-01,A8=-0.87039E-02,
A10=0.16222E-02,A12=-0.19461E-03,A14=0.11449E-04
Following table 24 represents the simple lens data of embodiment 8.
(table 24)
Figure 19 is the cut-open view of imaging lens system 18 grades of embodiment 8.Imaging lens system 18 possesses: have positive light coke and two the 1st protruding lens L1 at optical axis AX periphery, there is negative power and the 2nd lens L2 to the protruding falcate of object side at optical axis AX periphery, there is negative power and the 3rd lens L3 to the protruding falcate of object side at optical axis AX periphery, there is weak negative power and the 4th lens L4 to the protruding falcate of object side at optical axis AX periphery, there is positive light coke and the 5th lens L5 to the protruding falcate of picture side at optical axis AX periphery, there is negative power and the 6th lens L6 to the protruding falcate of object side at optical axis AX periphery.Whole lens L1~L6 are formed by plastic material.Between the 1st lens L1 and the 2nd lens L2, dispose opening diaphragm S.In addition, can be between the light emergence face of the 6th lens L6 and shooting face (image planes) I, the parallel flat F of configuration suitable thickness.
Figure 20 A~20C represents the aberration diagram (spherical aberration, astigmatism and distortion) of the imaging lens system 18 of embodiment 8.
(embodiment 9)
Below represent the each element of entirety of the imaging lens system of embodiment 9.
f=3.43mm
fB=0.32mm
F=1.95
2Y=4.5mm
ENTP=0.49mm
EXTP=-2.43mm
H1=-0.36mm
H2=-3.11mm
Following table 25 represents the data of the lens face of embodiment 9.
(table 25)
Following table 26 represents the asphericity coefficient of the lens face of embodiment 9.
(table 26)
The 1st
K=-0.61364E+01,A4=0.16576E+00,A6=-0.15300E+00,A8=0.95921E-01,
A10=-0.47413E-01,A12=-0.64505E-01,A14=0.43404E-01
The 2nd
K=-0.20000E+02,A4=-0.60415E-01,A6=0.16281E+00,A8=-0.25413E+00,
A10=0.14873E+00,A12=-0.38224E-01,A14=0.76000E-02
The 4th
K=-0.20000E+02,A4=-0.92328E-01,A6=0.38133E+00,A8=-0.31643E+00,
A10=-0.32405E-01,A12=0.27075E+00,A14=-0.11700E+00
The 5th
K=-0.20000E+02,A4=0.18796E-01,A6=0.12668E+00,A8=-0.75766E-01,
A10=-0.60437E-01,A12=0.35245E-01
The 6th
K=0.42623E+01,A4=-0.14933E+00,A6=-0.18240E+00,A8=0.15007E-01,
A10=0.70656E-02,A12=-0.21506E+00
The 7th
K=-0.15591E+02,A4=-0.14462E+00,A6=-0.19272E-01,A8=0.28118E-01,
A10=-0.14404E+00,A12=0.96284E-01,A14=0.37258E-03
The 8th
K=-0.20000E+02,A4=-0.24122E+00,A6=0.11549E+00,A8=-0.15878E+00,
A10=0.18479E+00,A12=-0.66535E-01
The 9th
K=-0.19229E+02,A4=-0.19038E+00,A6=0.90947E-01,A8=-0.92472E-01,
A10=0.69831E-01,A12=-0.18614E-01
The 10th
K=-0.20000E+02,A4=-0.10219E+00,A6=0.16506E+00,
A8=-0.13785E+00,
A10=0.68628E-01,A12=-0.16342E-01,A14=0.13950E-02
The 11st
K=-0.39704E+01,A4=-0.15560E+00,A6=0.83204E-01,A8=-0.48010E-01,
A10=0.27826E-01,A12=-0.51069E-02
The 12nd
K=0.20000E+02,A4=-0.16133E+00,A6=0.30849E-01,A8=0.56904E-02,
A10=-0.28015E-02,A12=0.58132E-03,A14=-0.76701E-04
The 13rd
K=-0.54644E+01,A4=-0.76469E-01,A6=0.26099E-01,A8=-0.62144E-02,
A10=0.98682E-03,A12=-0.92800E-04,A14=0.40251E-05
Following table 27 represents the simple lens data of embodiment 9.
(table 27)
Figure 21 is the cut-open view of imaging lens system 19 grades of embodiment 9.Imaging lens system 19 possesses: have positive light coke and two the 1st protruding lens L1 at optical axis AX periphery, there are negative power and two the 2nd recessed lens L2 at optical axis AX periphery, there is negative power and the 3rd lens L3 to the protruding falcate of object side at optical axis AX periphery, there is weak negative power and the 4th lens L4 to the protruding falcate of object side at optical axis AX periphery, there is positive light coke and the 5th lens L5 to the protruding falcate of picture side at optical axis AX periphery, there is negative power and the 6th lens L6 to the protruding falcate of object side at optical axis AX periphery.Whole lens L1~L6 are formed by plastic material.Between the 1st lens L1 and the 2nd lens L2, dispose opening diaphragm S.In addition, can be between the light emergence face of the 6th lens L6 and shooting face (image planes) I, the parallel flat F of configuration suitable thickness.
Figure 22 A~22C represents the aberration diagram (spherical aberration, astigmatism and distortion) of the imaging lens system 19 of embodiment 9.
(embodiment 10)
Below represent the each element of entirety of the imaging lens system of embodiment 10.
f=3.22mm
fB=0.23mm
F=1.8
2Y=4.5mm
ENTP=0mm
EXTP=-1.93mm
H1=-1.57mm
H2=-2.99mm
Following table 28 represents the data of the lens face of embodiment 10.
(table 28)
Following table 29 represents the asphericity coefficient of the lens face of embodiment 10.
(table 29)
The 2nd
K=-0.77338E+00,A4=0.11070E-01,A6=-0.19613E-01,A8=-0.21101E-01,
A10=0.27771E-02,A12=-0.44217E-01
The 3rd
K=-0.20000E+02,A4=0.36609E-01,A6=-0.46922E-01,A8=-0.49169E-02,
A10=-0.27960E-01,A12=0.11606E-01
The 4th
K=-0.19451E+02,A4=0.45238E-01,A6=0.55440E-01,A8=-0.46688E-01,
A10=-0.14664E-01,A12=0.18589E-01
The 5th
K=-0.20000E+02,A4=-0.28410E-01,A6=-0.11759E+00,A8=0.21953E+00,
A10=-0.41939E+00,A12=0.24399E+00
The 6th
K=-0.12852E+02,A4=-0.92904E-01,A6=-0.24876E+00,A8=0.94789E-01,
A10=0.19532E+00,A12=-0.52879E-01
The 7th
K=0.81810E+00,A4=-0.34712E-01,A6=-0.87003E-01,A8=0.10107E+00,
A10=0.11487E-01,A12=0.77736E-01
The 8th
K=-0.11165E+02,A4=-0.12136E+00,A6=-0.35671E-01,A8=0.19290E-01,
A10=0.16446E-01,A12=0.20160E-01
The 9th
K=-0.16689E+02,A4=-0.55305E-01,A6=-0.46896E-01,A8=0.20141E-01,
A10=0.18181E-01,A12=-0.10107E-02
The 10th
K=0.14699E+02,A4=0.81121E-01,A6=0.62454E-03,A8=0.40341E+00,
A10=-0.10602E+01,A12=0.12151E+01,A14=-0.71051E+00,
A16=0.16898E+00
The 11st
K=-0.32161E+01,A4=-0.32827E-02,A6=0.21639E-01,A8=0.16266E+00,
A10=-0.12783E+00,A12=-0.21792E-01,A14=0.34997E-01,
A16=-0.58628E-02
The 12nd
K=0.48001E+01,A4=-0.34062E+00,A6=0.28706E+00,A8=-0.17577E+00,
A10=0.75052E-01,A12=-0.19573E-01,A14=0.29342E-02,
A16=-0.20669E-03
The 13rd
K=-0.59363E+01,A4=-0.17919E+00,A6=0.14209E+00,A8=-0.87262E-01,
A10=0.34601E-01,A12=-0.86326E-02,A14=0.12231E-02,
A16=-0.75164E-04
Following table 30 represents the simple lens data of embodiment 10.
(table 30)
Figure 23 is the cut-open view of imaging lens system 20 grades of embodiment 10.Imaging lens system 20 possesses: have positive light coke and two the 1st protruding lens L1 at optical axis AX periphery, there is negative power at optical axis AX periphery, approach plano-concave and to picture the 2nd protruding lens L2 of side to object side, there are negative power and two the 3rd recessed lens L3 at optical axis AX periphery, there is positive light coke and the 4th lens L4 to the protruding falcate of object side at optical axis AX periphery, there is positive light coke and the 5th lens L5 to the protruding falcate of picture side at optical axis AX periphery, there is negative power and the 6th lens L6 to the protruding falcate of object side at optical axis AX periphery.Whole lens L1~L6 are formed by plastic material.At the object side (than the summit of the object side of the 1st lens L1 close picture side) of the 1st lens L1, dispose opening diaphragm S.In addition, can be between the light emergence face of the 6th lens L6 and shooting face (image planes) I, the parallel flat F of configuration suitable thickness.
Figure 24 A~24C represents the aberration diagram (spherical aberration, astigmatism and distortion) of the imaging lens system 20 of embodiment 10.
(embodiment 11)
Below represent the each element of entirety of the imaging lens system of embodiment 11.
f=3.2mm
fB=0.21mm
F=2.0
2Y=4.5mm
ENTP=0mm
EXTP=-1.86mm
H1=-1.76mm
H2=-2.99mm
Following table 31 represents the data of the lens face of embodiment 11.
(table 31)
Following table 32 represents the asphericity coefficient of the lens face of embodiment 11.
(table 32)
The 2nd
K=-0.66466E+00,A4=0.21319E-01,A6=-0.97783E-02,A8=-0.39375E-01,
A10=0.61410E-01,A12=-0.16400E+00
The 3rd
K=-0.20000E+02,A4=0.11140E+00,A6=-0.91361E-01,A8=-0.42260E-01,
A10=-0.46735E-01,A12=0.62160E-01
The 4th
K=-0.20000E+02,A4=0.10697E+00,A6=0.20263E-01,A8=-0.90671E-01,
A10=-0.30138E-01,A12=0.13910E+00
The 5th
K=0.17176E+02,A4=-0.93700E-01,A6=-0.11286E+00,A8=0.29861E+00,
A10=-0.74612E+00,A12=0.46684E+00
The 6th
K=-0.17340E+02,A4=-0.71400E-01,A6=-0.28061E+00,A8=0.81868E-01,
A10=0.19144E+00,A12=0.14940E-01
The 7th
K=-0.33637E+01,A4=0.15250E-01,A6=-0.17823E+00,A8=0.19255E+00,
A10=0.86890E-01,A12=0.20976E+00
The 8th
K=-0.81627E+01,A4=-0.28836E+00,A6=-0.55080E-01,A8=0.75970E-01,
A10=0.74599E-01,A12=-0.72622E-02
The 9th
K=-0.10447E+02,A4=-0.18846E+00,A6=-0.11696E+00,A8=0.58391E-01,
A10=0.70957E-01,A12=-0.17330E-01
The 10th
K=0.92921E+01,A4=0.39910E-01,A6=-0.71922E-01,A8=0.66180E+00,
A10=-0.18734E+01,A12=0.24945E+01,A14=-0.16572E+01,
A16=0.43345E+00
The 11st
K=-0.33903E+01,A4=-0.53250E-01,A6=0.19567E-01,A8=0.27785E+00,
A10=-0.21819E+00,A12=-0.42738E-01,A14=0.79728E-01,
A16=-0.18668E-01
The 12nd
K=-0.14333E+02,A4=-0.38760E+00,A6=0.40459E+00,
A8=-0.27810E+00,
A10=0.13371E+00,A12=-0.40247E-01,A14=0.68104E-02,
A16=-0.50451E-03
The 13rd
K=-0.76719E+01,A4=-0.20810E+00,A6=0.19030E+00,
A8=-0.13571E+00,
A10=0.62534E-01,A12=-0.17794E-01,A14=0.28133E-02,
A16=-0.18637E-03
Following table 33 represents the simple lens data of embodiment 11.
(table 33)
Figure 25 is the cut-open view of imaging lens system 21 grades of embodiment 11.Imaging lens system 21 possesses: have positive light coke and two the 1st protruding lens L1 at optical axis AX periphery, there are negative power and two the 2nd recessed lens L2 at optical axis AX periphery, there is weak positive light coke and the 3rd lens L3 to the protruding falcate of object side at optical axis AX periphery, there is weak negative power and the 4th lens L4 to the protruding falcate of object side at optical axis AX periphery, there is positive light coke and the 5th lens L5 to the protruding falcate of picture side at optical axis AX periphery, there are negative power and two the 6th recessed lens L6 at optical axis AX periphery.Whole lens L1~L6 are formed by plastic material.At the object side (than the summit of the object side of the 1st lens L1 close picture side) of the 1st lens L1, dispose opening diaphragm S.In addition, can be between the light emergence face of the 6th lens L6 and shooting face (image planes) I, the parallel flat F of configuration suitable thickness.
Figure 26 A~26C represents the aberration diagram (spherical aberration, astigmatism and distortion) of the imaging lens system 21 of embodiment 11.
(embodiment 12)
Below represent the each element of entirety of the imaging lens system of embodiment 12.
f=3.62mm
fB=0.26mm
F=1.8
2Y=4.5mm
ENTP=0mm
EXTP=-2.27mm
H1=-1.55mm
H2=-3.36mm
Following table 34 represents the data of the lens face of embodiment 12.
(table 34)
Following table 35 represents the asphericity coefficient of the lens face of embodiment 12.
(table 35)
The 2nd
K=-0.10018E+01,A4=0.26700E-02,A6=-0.22217E-01,A8=-0.95472E-02,
A10=0.58317E-02,A12=-0.14851E-01
The 3rd
K=-0.19829E+02,A4=0.38675E-01,A6=-0.29117E-01,A8=-0.92684E-03,
A10=-0.16018E-01,A12=0.20978E-02
The 4th
K=-0.20000E+02,A4=0.11461E+00,A6=-0.10823E-01,A8=-0.84793E-02,
A10=0.34256E-02,A12=-0.13415E-02
The 5th
K=-0.20000E+02,A4=-0.44841E-02,A6=-0.41724E-01,A8=0.12296E+00,
A10=-0.17734E+00,A12=0.73106E-01
The 6th
K=0.10482E+02,A4=-0.69131E-01,A6=-0.14607E+00,A8=0.37240E-01,
A10=0.69289E-01,A12=-0.22193E-01
The 7th
K=0.12905E+02,A4=-0.36901E-01,A6=-0.85692E-01,A8=0.73950E-01,
A10=0.31808E-01,A12=0.11635E-02
The 8th
K=-0.90061E+01,A4=-0.12879E+00,A6=-0.51779E-02,A8=0.23634E-01,
A10=0.64167E-02,A12=0.56630E-02
The 9th
K=-0.10341E+02,A4=0.15745E-01,A6=-0.69663E-01,A8=-0.49934E-02,
A10=0.15919E-01,A12=-0.28191E-02
The 10th
K=0.14235E+02,A4=0.12781E+00,A6=-0.42956E-01,A8=0.20443E+00,
A10=-0.45002E+00,A12=0.42562E+00,A14=-0.20611E+00,
A16=0.37718E-01
The 11st
K=-0.38763E+01,A4=0.47980E-01,A6=-0.41070E-02,A8=0.68265E-01,
A10=-0.53153E-01,A12=-0.46953E-02,A14=0.10917E-01,
A16=-0.17759E-02
The 12nd
K=-0.28289E+00,A4=-0.24290E+00,A6=0.16828E+00,A8=-0.89610E-01,
A10=0.32144E-01,A12=-0.68418E-02,A14=0.84428E-03,
A16=-0.52037E-04
The 13rd
K=-0.56710E+01,A4=-0.14084E+00,A6=0.91583E-01,A8=-0.47426E-01,
A10=0.14890E-01,A12=-0.29396E-02,A14=0.35803E-03,
A16=-0.21367E-04
Following table 36 represents the simple lens data of embodiment 12.
(table 36)
Figure 27 is the cut-open view of imaging lens system 22 grades of embodiment 12.Imaging lens system 22 possesses: have positive light coke and two the 1st protruding lens L1 at optical axis AX periphery, there are negative power and two the 2nd recessed lens L2 at optical axis AX periphery, there is positive light coke and the 3rd lens L3 to the protruding falcate of object side at optical axis AX periphery, there is positive light coke and the 4th lens L4 to the protruding falcate of object side at optical axis AX periphery, there is positive light coke and the 5th lens L5 to the protruding falcate of picture side at optical axis AX periphery, there is negative power and the 6th lens L6 to the protruding falcate of object side at optical axis AX periphery.Whole lens L1~L6 are formed by plastic material.At the object side (than the summit of the object side of the 1st lens L1 close picture side) of the 1st lens L1, dispose opening diaphragm S.In addition, can be between the light emergence face of the 6th lens L6 and shooting face (image planes) I, the parallel flat F of configuration suitable thickness.
Figure 28 A~28C represents the aberration diagram (spherical aberration, astigmatism and distortion) of the imaging lens system 22 of embodiment 12.
(embodiment 13)
Below represent the each element of entirety of the imaging lens system of embodiment 13.
f=3.69mm
fB=0.25mm
F=1.85
2Y=4.5mm
ENTP=0mm
EXTP=-2.28mm
H1=-1.71mm
H2=-3.44mm
Following table 37 represents the data of the lens face of embodiment 13.
(table 37)
Following table 38 represents the asphericity coefficient of the lens face of embodiment 13.
(table 38)
The 2nd
K=-0.10357E+01,A4=0.19454E-02,A6=-0.20881E-01,A8=-0.91008E-02,
A10=0.54110E-02,A12=-0.14346E-01
The 3rd
K=-0.18517E+02,A4=0.42155E-01,A6=-0.27333E-01,A8=-0.15691E-02,
A10=-0.16069E-01,A12=0.21102E-02
The 4th
K=-0.20000E+02,A4=0.11877E+00,A6=-0.10082E-01,A8=-0.13214E-01,
A10=0.32475E-02,A12=0.34610E-03
The 5th
K=-0.20000E+02,A4=-0.14848E-01,A6=-0.35750E-01,A8=0.12203E+00,
A10=-0.17759E+00,A12=0.75335E-01
The 6th
K=0.11434E+02,A4=-0.50601E-01,A6=-0.15024E+00,A8=0.37655E-01,
A10=0.69842E-01,A12=-0.23690E-01
The 7th
K=-0.47766E+00,A4=-0.44218E-01,A6=-0.81034E-01,A8=0.71550E-01,
A10=0.29104E-01,A12=-0.70431E-04
The 8th
K=-0.83898E+01,A4=-0.12446E+00,A6=-0.10099E-01,A8=0.22585E-01,
A10=0.80835E-02,A12=0.72347E-02
The 9th
K=-0.10396E+02,A4=0.28956E-01,A6=-0.61940E-01,A8=-0.45071E-02,
A10=0.15577E-01,A12=-0.16981E-03
The 10th
K=0.13285E+02,A4=0.12169E+00,A6=-0.30718E-01,A8=0.20861E+00,
A10=-0.45126E+00,A12=0.42401E+00,A14=-0.20572E+00,
A16=0.38974E-01
The 11st
K=-0.33379E+01,A4=0.57771E-01,A6=-0.25625E-02,A8=0.68020E-01,
A10=-0.53108E-01,A12=-0.48577E-02,A14=0.10848E-01,
A16=-0.17925E-02
The 12nd
K=0.71727E+00,A4=-0.24339E+00,A6=0.17285E+00,A8=-0.89794E-01,
A10=0.31937E-01,A12=-0.68907E-02,A14=0.83963E-03,
A16=-0.46872E-04
The 13rd
K=-0.61005E+01,A4=-0.13807E+00,A6=0.89085E-01,A8=-0.46709E-01,
A10=0.14882E-01,A12=-0.29590E-02,A14=0.35629E-03,
A16=-0.20444E-04
Following table 39 represents the simple lens data of embodiment 13.
(table 39)
Figure 29 is the cut-open view of imaging lens system 23 grades of embodiment 13.Imaging lens system 23 possesses: have positive light coke and two the 1st protruding lens L1 at optical axis AX periphery, there are negative power and two the 2nd recessed lens L2 at optical axis AX periphery, there is weak positive light coke and the 3rd lens L3 to the protruding falcate of object side at optical axis AX periphery, there is positive light coke and the 4th lens L4 to the protruding falcate of object side at optical axis AX periphery, there is positive light coke and the 5th lens L5 to the protruding falcate of picture side at optical axis AX periphery, there is negative power and the 6th lens L6 to the protruding falcate of object side at optical axis AX periphery.Whole lens L1~L6 are formed by plastic material.At the object side (than the summit of the 1st lens L1 object side close picture side) of the 1st lens L1, dispose opening diaphragm S.In addition, can be between the light emergence face of the 6th lens L6 and shooting face (image planes) I, the parallel flat F of configuration suitable thickness.
Figure 30 A~30C represents the aberration diagram (spherical aberration, astigmatism and distortion) of the imaging lens system 23 of embodiment 13.
For reference, following table 40 has gathered the value of the each embodiment 1~13 corresponding with each conditional (1)~(8).
(table 40)
Above, according to embodiment and embodiment, describe the present invention, but the present invention is not limited to above-mentioned embodiment etc.
In recent years, as low cost and the method that camera head is installed in large quantities, following technology is proposed: to having watered in advance the substrate of scolding tin, keep the state that has loaded other electronic units of IC chip and optical element to carry out reflow treatment (heat treated), by melting scolding tin, electronic unit and optical element are arranged on substrate simultaneously.In order to install by this reflow treatment, electronic unit and optical element need to be heated to about 200~260 ℃, but under this high temperature, exist and used lens generation thermal deformation or the variable color of thermoplastic resin, and cause its optical property to reduce such problem points.As one of method for addressing this is that, propose to use the glass mold lens of fine heat-resisting performance, to realize the technology of the optical property under miniaturization and hot environment simultaneously, but compare the lens that use thermoplastic resin, general cost is higher.Therefore, by use energy-curable resin in the material of the imaging lens system 11~23 of embodiment 1~13, compared with having used the lens of polycarbonate-based or the thermoplastic resin that polyolefin is such, the reduction of the optical property can reduce to be exposed to high temperature time, effective to reflow treatment, and than glass mold lens, easy to manufacture and cheap, can realize group simultaneously and entered low cost and the production of the camera head of imaging lens system.In addition, so-called energy-curable resin, also refers to any one of heat-curing resin and uv curing resin.
In addition, above-described embodiment 1~13, for the chief ray incident angle of light beam of shooting face I that incides imaging apparatus 51, at shooting face I periphery, not necessarily designs very little.But, in nearest technology, by rearranging the micro-lens array on colo(u)r filter, the chip of imaging apparatus 51, can alleviate shade.Particularly, if with respect to the pel spacing of the shooting face I of imaging apparatus 51, what the arrangement pitches of the micro-lens array on colo(u)r filter, chip was set is a little bit smaller a little, the closer to the periphery of shooting face I, with respect to each pixel, micro-lens array on colo(u)r filter, chip is more to imaging lens system 10(11~23) optical axis AX lateral deviation move, therefore the light beam of oblique incidence can be imported efficiently to the light accepting part of each pixel.Thus, the shade producing can be suppressed to less in imaging apparatus 51.Above-described embodiment 1~13, for the part of relaxing above-mentioned requirement, is the design example that turns to target with more small-sized.
Claims (13)
1. an imaging lens system, for making subject look like to image in imaging apparatus, wherein,
Described imaging lens system has the brightness below F2.4,
Possess successively from object side:
There is positive light coke and near optical axis convex surface towards the 1st lens of object side;
There are the 2nd lens of negative power;
The 3rd lens;
The 4th lens;
The 5th lens; And
There is negative power and near optical axis concave surface towards picture side the 6th lens,
Described the 6th lens be aspherical shape as side, with the intersection point of optical axis beyond position there is extreme value,
Opening diaphragm is configured in between object side to the picture side of described the 2nd lens of described the 1st lens,
Described imaging lens system meets following conditional,
0.3≤f/(2×f1×Fno)<1.0…(1)
Wherein, f is the focal length of imaging lens system whole system, and f1 is the focal length of described the 1st lens, and Fno is the F value of imaging lens system whole system.
2. imaging lens system according to claim 1, wherein,
Meet following conditional,
-1.1<f6/f<-0.1…(2)
Wherein, f6 is the focal length of described the 6th lens, and f is the focal length of imaging lens system whole system.
3. imaging lens system according to claim 1, wherein,
Meet following conditional,
-1.8<f2/f<-0.1…(3)
Wherein, f2 is the focal length of described the 2nd lens, and f is the focal length of imaging lens system whole system.
4. imaging lens system according to claim 1, wherein,
Meet following conditional,
0.3<r1/f<0.6…(4)
Wherein, r1 is the radius-of-curvature of the object side of described the 1st lens, and f is the focal length of imaging lens system whole system.
5. imaging lens system according to claim 1, wherein,
Meet following conditional,
0.02<THIL2/f<0.15…(5)
Wherein, THIL2 is the thickness on the optical axis of described the 2nd lens, and f is the focal length of imaging lens system whole system.
6. imaging lens system according to claim 1, wherein,
Meet following conditional,
0.03<THIL6/f<0.30…(6)
Wherein, THIL6 is the thickness on the optical axis of described the 6th lens, and f is the focal length of imaging lens system whole system.
7. imaging lens system according to claim 1, wherein,
The 2nd lens have the shape of concave surface towards picture side.
8. imaging lens system according to claim 1, wherein,
Meet following conditional,
0≤ν5-ν6<50…(7)
Wherein, ν 5 is Abbe numbers of described the 5th lens, and ν 6 is Abbe numbers of described the 6th lens.
9. imaging lens system according to claim 1, wherein,
Meet following conditional,
20<ν1-ν2<70…(8)
Wherein, ν 1 is the Abbe number of described the 1st lens, and ν 2 is Abbe numbers of described the 2nd lens.
10. imaging lens system according to claim 1, wherein,
Described the 1st lens have meniscus shape.
11. imaging lens systems according to claim 1, wherein,
Also have and do not there are in fact dioptric lens.
12. 1 kinds of camera heads, wherein,
Possess imaging lens system claimed in claim 1 and described imaging apparatus.
13. 1 kinds of portable terminal devices, wherein,
Possesses the camera head described in claim 12.
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JP2014115431A (en) | 2014-06-26 |
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