CN201508432U - Camera lens and camera device - Google Patents
Camera lens and camera device Download PDFInfo
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- CN201508432U CN201508432U CN2009201550380U CN200920155038U CN201508432U CN 201508432 U CN201508432 U CN 201508432U CN 2009201550380 U CN2009201550380 U CN 2009201550380U CN 200920155038 U CN200920155038 U CN 200920155038U CN 201508432 U CN201508432 U CN 201508432U
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Abstract
The utility model provides a camera lens and a camera device which can obtain high-resolution performances. From a material side, the camera lens and the camera device sequentially comprise a first lens (G1), a second lens (G2), a third lens (G3), a fourth lens (G4) and a fifth lens (G5), wherein the first lens is arranged next to an optical axis, the face of the material side is of protruding shape and has positive refraction force, the second lens has negative refraction force, the third lens is arranged next to the optical axis, the face of an image side is of protruding shape and has the positive refraction force, the fourth lens is arranged next to the optical axis, the face of the image side is of protruding shape and has the positive refraction force, the fifth lens is arranged next to the optical axis, and the face of the image side is of concave shape and has the negative refraction fore. The following conditional sentences are satisfied: 0.8 <f/f1<1.5...(1), f1</f2/<f3...(2), vd2<35...(3). f1, f2 and f3 are taken as focal lengths of the first, the second and the third lenses (G1), (G2) and (G3), f is the focal length of the whole system, and vd2 is an abbe number of the second lens (G2) to a d line.
Description
Technical field
The utility model relate to a kind of on the imaging apparatus of CCD (Charge Coupled Device) or CMOS (Complementary Metal Oxide Semiconductor) etc. the optical image of imaging subject imaging lens system, and carry the camera head of the mobile phone of digital static video camera that this imaging lens system takes or band video camera and information portable terminal device (PDA:Personal DigitalAssistance) etc.
Background technology
In recent years, follow personal computer to the popularizing of general family, the digital static video camera that the image information of the landscape taken or bust etc. can be input to personal computer is popularized fast.And the situation of carrying the camara module of image input usefulness at mobile phone also increases.In equipment, use the imaging apparatus of CCD or CMOS etc. with such camera function.In recent years, the densification of these imaging apparatuss development, picture pick-up device imaging lens system whole and that be equipped on this also requires compactedness.And simultaneously, the high pixelation of imaging apparatus also develops, and requires high-resolution, the high performance of imaging lens system.In order to satisfy such requirement, in the past, exploitation has the imaging lens system of the structure of utilizing 4 lens as a whole, still, in order to seek further high-resolution, high performance, recently, the trend that increases the lens number is arranged.
Patent documentation 1: No. 3788133 communique of Jap.P.
Patent documentation 2: the open 2007-264180 communique of Jap.P.
Patent documentation 3: the open 2007-279282 communique of Jap.P.
Yet, in patent documentation 1 to 3, disclose the lens number is made as 5 imaging lens systems of seeking high performance, still,, require than the imaging lens system that is recorded in these documents high-resolution performance further in recent years.
The utility model content
The utility model proposes in view of such problem points, and its purpose is, a kind of imaging lens system and camera head that can access the high-resolution performance is provided.
Be set as from the thing side according to imaging lens system of the present utility model and comprise successively: the 1st lens, near optical axis, the face of thing side is convex form and has positive refracting power; The 2nd lens have negative refracting power; The 3rd lens near optical axis, are convex form and have positive refracting power as the face of side; The 4th lens near optical axis, are convex form and have positive refracting power as the face of side; The 5th lens near optical axis, are concave shape and have negative refracting power as the face of side, and the formula that meets the following conditions:
0.8＜f/f1＜1.5……(1)
f1＜|f2|＜f3……(2)
vd2＜35……(3)
Establishing the focal length that f1 is the 1st lens, the focal length that f2 is the 2nd lens, focal length, the f that f3 is the 3rd lens herein, is the focal length of total system.If vd2 is the Abbe numbers of the 2nd lens to the d line.
In according to imaging lens system of the present utility model, be made as 5 lens arrangement as a whole, compare, by increasing the lens number with the imaging lens system of 4 chip architectures in past, and seek the optimization of the structure of each lens, thereby obtain lens combination corresponding to the high-resolution performance of high pixelation.
In according to imaging lens system of the present utility model, preferred the 1st lens, the 2nd lens, the 3rd lens, the 4th lens, and the 5th lens all be that the two sides is an aspherical shape.
Particularly, the face shape as side of preferred the 4th lens is set as the aspherical shape that satisfies following formula.
ha＜0.7hmax……(4)
At this, be positioned at apart from the vertex of surface position of lens for the aspherical shape of height h arbitrarily and represent with the aspheric surface formula of stipulating, 1 rank differential value of this aspheric surface formula is illustrated in the degree of tilt (Pour I of the lens face of height under the h), when 2 rank differential values are represented the displacement (displacement) of the degree of tilt of lens face, the minimum height that is replaced based near the symbol of 2 rank differential values the optical axis is made as ha.And 7 one-tenth the height that the height under maximum effective radius is made as hmax, maximum effective radius is made as 0.7hmax.
Possesses imaging apparatus according to camera head of the present utility model according to imaging lens system of the present utility model and the output image pickup signal corresponding with the optical image that forms by imaging lens system of the present utility model.
In according to camera head of the present utility model, obtain high-resolution image pickup signal based on the high-resolution optical image that obtains by imaging lens system of the present utility model.
According to imaging lens system of the present utility model, in 5 lens arrangement as a whole, be set as shape of suitably setting each lens etc. and satisfy the defined terms formula, so can access the high-resolution performance.
And, according to camera head of the present utility model, the corresponding image pickup signal of optical image that output and imaging lens system by above-mentioned high-resolution performance of the present utility model form, so, can access high-resolution photographs.
Description of drawings
Fig. 1 is the figure of the 1st structure example of the related imaging lens system of an expression embodiment of the present utility model, is the lens profile figure corresponding to embodiment 1.
Fig. 2 is the figure of the 2nd structure example of expression imaging lens system, is the lens profile figure corresponding to embodiment 2.
Fig. 3 is the figure of the 3rd structure example of expression imaging lens system, is the lens profile figure corresponding to embodiment 3.
Fig. 4 is the figure of the 4th structure example of expression imaging lens system, is the lens profile figure corresponding to embodiment 4.
Fig. 5 is the figure of the 5th structure example of expression imaging lens system, is the lens profile figure corresponding to embodiment 5.
Fig. 6 is the figure of the 6th structure example of expression imaging lens system, is the lens profile figure corresponding to embodiment 6.
Fig. 7 is the performance plot about the differential value of the formula of the aspherical shape of the picture side of the 4th lens of the related imaging lens system of expression embodiment 1.
Fig. 8 is the performance plot about the differential value of the formula of the aspherical shape of the picture side of the 4th lens of the related imaging lens system of expression embodiment 2.
Fig. 9 is the performance plot about the differential value of the formula of the aspherical shape of the picture side of the 4th lens of the related imaging lens system of expression embodiment 3.
Figure 10 is the performance plot about the expression differential value of the formula of the aspherical shape of the picture side of the 4th lens of the related imaging lens system of expression embodiment 4.
Figure 11 is the performance plot about the differential value of the formula of the aspherical shape of the picture side of the 4th lens of the related imaging lens system of expression embodiment 5.
Figure 12 is the performance plot about the differential value of the formula of the aspherical shape of the picture side of the 4th lens of the related imaging lens system of expression embodiment 6.
Figure 13 is the aberration diagram of various aberrations of the wide-angle side of the related imaging lens system of expression embodiment 1, and (A) the expression sphere differs, (B) expression astigmatism, (C) represent to distort.
Figure 14 is the aberration diagram of various aberrations of the wide-angle side of the related imaging lens system of expression embodiment 2, and (A) the expression sphere differs, (B) expression astigmatism, (C) represent to distort.
Figure 15 is the aberration diagram of various aberrations of the wide-angle side of the related imaging lens system of expression embodiment 3, and (A) the expression sphere differs, (B) expression astigmatism, (C) represent to distort.
Figure 16 is the aberration diagram of various aberrations of the wide-angle side of the related imaging lens system of expression embodiment 4, and (A) the expression sphere differs, (B) expression astigmatism, (C) represent to distort.
Figure 17 is the aberration diagram of various aberrations of the wide-angle side of the related imaging lens system of expression embodiment 5, and (A) the expression sphere differs, (B) expression astigmatism, (C) represent to distort.
Figure 18 is the aberration diagram of various aberrations of the wide-angle side of the related imaging lens system of expression embodiment 6, and (A) the expression sphere differs, (B) expression astigmatism, (C) represent to distort.
Figure 19 is the key diagram about aspherical shape.
Figure 20 is the related outside drawing as a structure example of the mobile phone of the band video camera of camera head of an expression embodiment of the present utility model.
Among the figure: GC-optics, G1-the 1st lens, G2-the 2nd lens, G3-the 3rd lens, G4-the 4th lens, G5-the 5th lens, St-aperture diaphragm, Ri-are from the radius-of-curvature of thing side i lens face, and Di-is from the face interval of thing side i and i+1 lens face, Z1-optical axis.
Embodiment
Below, with reference to accompanying drawing embodiment of the present utility model is at length described.
Fig. 1 represents the 1st structure example of the imaging lens system that an embodiment of the present utility model is related.This structure example is corresponding to the lens arrangement of the 1st numerical value embodiment described later.Similarly, represent cross-section structure at Fig. 2～Fig. 6 corresponding to the 2nd to the 6th structure example of the lens arrangement of the 2nd to the 6th numerical value embodiment described later.In Fig. 1～Fig. 6, symbol Ri represents also to comprise that diaphragm St is made as the 1st and the radius-of-curvature of enclosing i the face (also claiming the i face) of symbol along with increasing successively towards picture side (imaging side) by the face of the constituent element of thing side.Symbol Di represent on the optical axis Z1 of i face and i+1 face face at interval.In addition, the basic structure of each structure example is all identical, so, below with the 1st structure example shown in Figure 1 as describing substantially.
Figure 20 (A), (B) are with the mobile phone of video camera as an example expression of the related camera head of present embodiment.Mobile phone at the band video camera of Figure 20 (A), (B) expression possesses top framework 2A and bottom framework 2B, and both constitute along the direction of arrow of Figure 20 (A) and rotate freely.Framework 2B is provided with action button 21 in the bottom.Be provided with video camera portion 1 (Figure 20 (B)) and display part 22 (Figure 20 (A)) etc. at top framework 2A.Display part 22 is made of the display board of LCD (liquid crystal board) or EL (Electro-Luminescence) plate etc.Display part 22 is configured in a side that becomes inner face when folding.In this display part 22, show beyond the various menus about telephony feature, can also show the image taken by video camera portion 1 etc.Video camera portion 1 is configured in for example back side one side of top framework 2A.But the position that video camera portion 1 is set is not limited thereto.
Video camera portion 1 possesses the related imaging lens system of present embodiment and is arranged on imaging apparatus (not shown) corresponding to the position of the imaging surface of imaging lens system.In video camera portion 1, the optical image that is formed by imaging lens system is transformed into electrical image pickup signal by imaging apparatus, and this image pickup signal is output to the signal processing circuit of apparatus body side.In the mobile phone of this band video camera, use the related imaging lens system of present embodiment, thereby fully carried out the high-resolution image pickup signal of aberration correction.In the picture pick-up device base side, can generate high-resolution image based on this image pickup signal.
In addition, the related imaging lens system of present embodiment can be applicable to the various camera heads of the imaging apparatus that uses CCD or CMOS etc.The related camera head of present embodiment is not limited to the mobile phone with video camera, also can be for example digital static video camera or PDA etc.
This imaging lens system possesses the 1st lens G1, the 2nd lens G2, the 3rd lens G3, the 4th lens G4 and the 5th lens G5 successively along optical axis Z1 from the thing side.Optical aperture diaphragm St is disposed at the front side of the 1st lens G1, in more detail, is configured in the face that optical axis Z1 goes up than the picture side of the 1st lens G1 and more leans on the thing side.
Imaging apparatus at the imaging surface Simg of this imaging lens system configuration CCD etc.Between the 5th lens G5 and imaging apparatus, the structure according to the camera side that lens are installed can dispose various optics GC.For example can dispose the flat optics of the cover glass of shooting face protection usefulness or infrared intercepting filter etc.At this moment, as optics GC, for example can use the optics that applies the coating with optical filter effect of infrared intercepting filter or ND optical filter etc. at flat cover glass.And, in this imaging lens system, can apply the coating with optical filter effect of infrared intercepting filter or ND optical filter etc. or the coating of antireflection at whole or at least 1 lens face of the 1st lens G1 to the 5 lens G5.
The face that the 1st lens G1 becomes near thing side optical axis is the positive lens of convex form, for example becomes biconvex lens near optical axis.But as the 6th structure example of Fig. 6, the 1st lens G1 also can be positive meniscus shaped lens.
The 2nd lens G2 is a negative lens, for example is made as near optical axis the negative lens of concave surface towards the thing side.But as the 6th structure example of Fig. 6, the 2nd lens G2 also can become near optical axis the negative lens of concave surface towards the picture side.
The 3rd lens G3 becomes that the face as side is the positive lens of convex form near optical axis, for example becomes biconvex lens near optical axis.But as the 6th structure example of Fig. 6, the 3rd lens G3 also can be with the positive meniscus shaped lens of convex surface towards the picture side.
Near the 4th lens G4 face as side optical axis is convex form and has positive refracting power.Near the 5th lens G5 face as side optical axis is concave shape and has negative refracting power.
This imaging lens system constitutes and satisfies following conditional.Herein, f1 is made as the focal length of the 1st lens G1, and f2 is made as the focal length of the 2nd lens G2, and f3 is made as the focal length of the 3rd lens G3, and f is made as the focal length of total system, and vd2 is made as the Abbe number of the 2nd lens G2 to the d line.
0.8＜f/f1＜1.5……(1)
f1＜|f2|＜f3……(2)
vd2＜35……(3)
In this imaging lens system, preferred the 1st lens G1, the 2nd lens G2, the 3rd lens G3, the 4th lens G4, and the 5th lens G5 all be that the two sides is an aspherical shape.Particularly, preferred the 4th lens G4 and the 5th lens G5 are to be the different aspherical shape of tendency of concaveconvex shape with periphery near the optical axis.The face as side of for example preferred the 5th lens G5 is made as near concavity shape optical axis and becomes the aspheric surface of convex form at periphery.
And the face shape as side of preferred the 4th lens G4 is made as the aspherical shape that satisfies following formula.
ha＜0.7hmax……(4)
At this, be positioned at apart from the vertex of surface position of lens for the aspherical shape of height h arbitrarily and represent with the aspheric surface formula of stipulating, when 1 rank differential value of this aspheric surface formula was illustrated in the displacement of the degree of tilt of the lens face of height under the h, degree of tilt that 2 rank differential values are represented lens face, the minimum height that is replaced based near the symbol of 2 rank differential values the optical axis was made as ha.And 7 one-tenth the height that the height under maximum effective radius is made as hmax, maximum effective radius is made as 0.7hmax.
The aspheric surface formula is generally represented by following formula (A).
Z＝C·h
2/{1+(1-K·C
2·h
2)
1/2}+∑A
n·h
n……(A)
(integer that n=3 is above)
Herein,
Z: the aspheric degree of depth (mm)
H: the distance from the optical axis to the lens face (highly) (mm)
K: eccentricity
C: paraxial curvature=1/R
(R: paraxial radius-of-curvature)
A
n: the n time asphericity coefficient
Z represents the length (mm) of vertical line that hangs down into the section (perpendicular to the plane of optical axis) on aspheric summit for the point on the aspheric surface of position of height h apart from optical axis from being positioned at.That is, Z represent apart from optical axis for the height h with the aspheric deflection (degree of depth) of vertex of surface position as benchmark.
Figure 19 illustrates the degree of tilt about lens face of face of the picture side of the 4th lens G4.Shown in Figure 19 apart from the vertex of surface position be arbitrarily the height h the pairing section of P1, lens face position.The degree of tilt in this section is equivalent to the degree of tilt of the lens face under height h.The situation of this section being swung to the thing side is made as minus side, and on the contrary, the situation of swinging to as side is made as positive side.1 rank differential value of above-mentioned aspheric surface formula is represented the degree of tilt in the section under height h as shown in figure 19.
Then, illustrate as the effect and the effect of the imaging lens system of above formation.
In this imaging lens system, be made as 5 lens arrangement as a whole, compare, increased the lens number with the imaging lens system of 4 chip architectures in past, and seek the optimization of the structure of each lens, thereby obtain lens combination corresponding to the high-resolution performance of high pixelation.Particularly, be set as convex form, thereby become bright optical system easily by face as side with the 3rd lens G3.
Conditional (1) relates to the refracting power of the 1st lens G1.In this imaging lens system, occupy main imaging function according to mode the 1st lens G1 of the formula of satisfying condition (1), thereby obtain the optical system of total length.If be lower than the lower limit of conditional (1), then length overall is elongated.If exceed the upper limit, then favourable to shortening length overall, still, curvature of the image increases, and can not get the high-resolution performance.
Shorter and obtain the high-resolution performance for length overall, the numerical range of optimum condition formula (1) is the numerical range of following conditional (1A).
1.0＜f/f1＜1.4……(1A)
Be more preferably the numerical range of following conditional (1B).
1.1＜f/f1＜1.3……(1B)
Conditional (2) illustrates the 1st lens G1, the 2nd lens G2, reaches the suitable relation of the focal length of the 3rd lens G3.Conditional (3) relates to the suitable Abbe number of the 2nd lens G2.By formula of satisfying condition (2) and conditional (3), help chromatic aberation and proofread and correct.The upper limit that particularly exceeds conditional (3), then chromatic aberation is proofreaied and correct and is become insufficient.
Proofread and correct in order to carry out chromatic aberation more well, the upper limit of optimum condition formula (3) satisfies the value of following conditional (3A).
vd2＜25……(3A)
And, in this imaging lens system, to be made as near optical axis with periphery in the aspherical shape as the 4th lens G4 of side and the 5th lens G5 with respect to other lens configuration is the different shape of tendency of concaveconvex shape, thereby can proofread and correct curvature of the image well to periphery from the central part of image planes.Particularly,, by satisfying above-mentioned conditional (3), thereby proofread and correct curvature of the image well, obtain the high-resolution performance about the face shape of the picture side of the 4th lens G4.
Imaging lens system as described above, related according to present embodiment in 5 lens arrangement as a whole, is suitably set the shape of each lens etc., makes and satisfies the defined terms formula, so can access the high-resolution performance.And the camera head related according to present embodiment makes the corresponding image pickup signal of optical image that output and imaging lens system by the related high-resolution performance of present embodiment form, so can access high-resolution photographs.
＜embodiment 〉
Then, the concrete numerical value embodiment to the related imaging lens system of present embodiment describes.Following, a plurality of numerical value embodiment carried out part conclude explanation.
[embodiment 1]
[table 1]～[table 2] illustrates the concrete lens data corresponding with the structure of imaging lens system shown in Figure 1.Particularly, represent the lens data that it is basic, represent aspheric data at [table 2] at [table 1].In the hurdle of the face number Si of the lens data shown in [table 1], about embodiment 1 related imaging lens system illustrate with by the face of the constituent element of thing side as the 1st and along with towards the face number of the i that encloses symbol as side increases successively (i=1～13) (also i.e. the face number of i face).The symbol Ri that in the hurdle of radius of curvature R i is represented corresponding to Fig. 1, encloses and from the value (mm) of the radius-of-curvature of thing side i face.Represent interval (mm) from the optical axis of thing side i face Si and i+1 face Si+1 similarly about the hurdle of face interval D i.Represent from thing side j optical considerations the refractive index of d line (587.6nm) and the value of Abbe number on the hurdle of Ndi and vdj.
The 1st lens G1, the 2nd lens G2 of the imaging lens system that embodiment 1 is related, the 3rd lens G3, the 4th lens G4, and the 5th lens G5 all be that the two sides is an aspherical shape.Aspheric radius-of-curvature illustrates near the numerical value of the radius-of-curvature the optical axis as these at the basic lens data of [table 1].
Aspherical surface data at the related imaging lens system of [table 2] expression embodiment 1.In the numerical value of representing as aspherical surface data, mark " E " represents that the numerical value after it is the end " power exponent " with 10, and expression is by 10 being that the numerical value that the exponential function at the end is represented multiplies each other with " E " numerical value before with this.For example, if " 1.0E-02 ", then expression " 1.0 * 10
-2".
As the aspherical surface data of the related imaging lens system of embodiment 1, record is by each the coefficient A in the formula of the represented aspherical shape of above-mentioned aspheric surface formula (A)
n, K value.With regard to the related imaging lens system of embodiment 1, as asphericity coefficient A
nSuitably use A effectively
3～A
10Till number of times represent.
And, represent differential value at Fig. 7 about above-mentioned conditional (4).That is, about the face shape of the picture side of the 4th lens G4, the 1 rank differential value and the 2 rank differential values of expression aspheric surface formula.Transverse axis is represented effective radius (%), and the longitudinal axis is represented differential value.In addition, maximum effective radius is made as 100%.As shown in Figure 7, from 7 one-tenth (70%) arriving maximum effective radius near the optical axis before, the symbol of 2 rank differential values is replaced.That is the satisfy condition condition of formula (4).
[table 1]
[table 2]
[numerical value embodiment 2～6]
With the related imaging lens system of above embodiment 1 similarly, as embodiment 2, at the concrete lens data of [table 3]～[table 4] expression corresponding to the structure of imaging lens system shown in Figure 2.And, similarly, as embodiment 3, at the concrete lens data of [table 5]～[table 6] expression corresponding to the structure of imaging lens system shown in Figure 3.Similarly, as embodiment 4, at the concrete lens data of [table 7]～[table 8] expression corresponding to the structure of imaging lens system shown in Figure 4.Similarly, as embodiment 5, at the concrete lens data of [table 9]～[table 10] expression corresponding to the structure of imaging lens system shown in Figure 5.Similarly, as embodiment 6, at the concrete lens data of [table 11]～[table 12] expression corresponding to the structure of imaging lens system shown in Figure 6.
In addition, same with the imaging lens system that embodiment 1 is related about any one imaging lens system among the embodiment 2 to 6, all lens faces become aspherical shape.Represent the imaging lens system of relevant embodiment 2 to 6 and the relevant differential value of above-mentioned conditional (4) at Fig. 8～Figure 12.That is, about the face shape of the picture side of the 4th lens G4, the 1 rank differential value and the 2 rank differential values of expression aspheric surface formula.As Fig. 8～shown in Figure 12, about the imaging lens system arbitrarily of embodiment 2 to 6, from 7 one-tenth (70%) arriving maximum effective radius near the optical axis before, the symbol of 2 rank differential values is replaced.That is the satisfy condition condition of formula (4).
[table 3]
[table 4]
[table 5]
[table 6]
[table 7]
[table 8]
[table 9]
[table 10]
[table 11]
[table 12]
Conclude expression in the value that [table 13] is relevant with above-mentioned conditional (1)～(3) at each embodiment.From [table 13] as can be known, about conditional (1)～(3), the value of each embodiment becomes in this numerical range.Also represent value at [table 13] as various data about F number (FNO.).From [table 13] as can be known, particularly about embodiment 1～3, the value of FNO. is little, becomes bright lens combination.
[table 13]
Figure 13 (A)～(C) illustrates spherical aberration, astigmatism, and the distortion (distortion aberration) of the related imaging lens system of embodiment 1 respectively.In these aberration diagrams, the d line as reference wavelength, is also represented the aberration of relevant C line (wavelength 656.27nm) and F line (wavelength 486.13nm).In astigmatism figure, (S) aberration of expression sagitta of arc direction, (T) aberration of expression tangential direction.ω represents angle of half field-of view.In Figure 13 (A), the longitudinal axis is represented entrance pupil diameter (mm).
Similarly, at Figure 14 (A)～(C) expression various aberrations about the related imaging lens system of embodiment 2.Similarly, at the various aberrations of Figure 15～Figure 28 (A)～(C) expression about the related imaging lens system of embodiment 3～6.In addition, in Figure 17 (B), (C), the longitudinal axis is represented image height Y (mm).
From each above numeric data and each aberration diagram as can be known, about each embodiment,, can realize the camera-lens system of high-resolution performance by 5 lens arrangement as a whole.
In addition, the utility model is not limited to above-mentioned embodiment and each embodiment can carry out various distortion enforcements.For example, the value of the radius-of-curvature of each lens composition, face interval and refractive index etc. is not limited in the value shown in above-mentioned each numerical value embodiment, and gets other value.
Claims (4)
1. an imaging lens system is characterized in that, comprises successively from the thing side:
The 1st lens, near optical axis, the face of thing side is convex form and has positive refracting power;
The 2nd lens have negative refracting power;
The 3rd lens near optical axis, are convex form and have positive refracting power as the face of side;
The 4th lens near optical axis, are convex form and have positive refracting power as the face of side;
The 5th lens near optical axis, are concave shape and have negative refracting power as the face of side,
And formula meets the following conditions:
0.8＜f/f1＜1.5……(1)
f1＜|f2|＜f3……(2)
vd2＜35……(3)
Herein,
F1 is the focal length of the 1st lens,
F2 is the focal length of the 2nd lens,
F3 is the focal length of the 3rd lens,
F is the focal length of total system,
Vd2 is the Abbe numbers of the 2nd lens to the d line.
2. imaging lens system as claimed in claim 1 is characterized in that,
Be positioned at apart from the vertex of surface position of lens for the aspherical shape of height (h) arbitrarily and represent with the aspheric surface formula of regulation, when 1 rank differential value of this aspheric surface formula is illustrated in the displacement of the degree of tilt of the lens face of height under (h), degree of tilt that 2 rank differential values are represented the said lens face
The minimum height that will be replaced based near the symbol of 2 rank differential values the optical axis is made as 7 one-tenth the height that ha, the height under maximum effective radius be made as hmax, maximum effective radius and is made as 0.7hmax, and the face shape as side of above-mentioned the 4th lens is set as the aspherical shape that satisfies following formula:
ha＜0.7hmax……(4)。
3. imaging lens system as claimed in claim 1 or 2 is characterized in that,
Above-mentioned the 1st lens, above-mentioned the 2nd lens, above-mentioned the 3rd lens, above-mentioned the 4th lens, and above-mentioned the 5th lens all be that the two sides is an aspherical shape.
4. a camera head is characterized in that,
Possess each described imaging lens system of claim 1～3 and
Export the imaging apparatus of the image pickup signal corresponding with the optical image that forms by above-mentioned imaging lens system.
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| US8284291B2 (en) | 2010-11-01 | 2012-10-09 | Largan Precision Co., Ltd. | Photographing optical lens assembly |
| CN102959448A (en) * | 2010-06-28 | 2013-03-06 | 索尼公司 | Image capture lens and image capture device |
| US8395851B2 (en) | 2010-10-06 | 2013-03-12 | Largan Precision Co., Ltd. | Optical lens system |
| CN103364922A (en) * | 2012-03-30 | 2013-10-23 | 玉晶光电(厦门)有限公司 | Portable electronic device and optical imaging lens thereof |
| CN104142561A (en) * | 2014-04-16 | 2014-11-12 | 玉晶光电(厦门)有限公司 | Optical imaging lens and electronic device applying same |
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| JPH02167516A (en) * | 1988-12-21 | 1990-06-27 | Minolta Camera Co Ltd | Microfilm projection lens system |
| JPH03172813A (en) * | 1989-12-01 | 1991-07-26 | Konica Corp | Small-sized zoom lens |
| JPH04333813A (en) * | 1991-05-09 | 1992-11-20 | Minolta Camera Co Ltd | Microfilm projection lens system |
| JPH10123418A (en) * | 1996-10-17 | 1998-05-15 | Ricoh Co Ltd | Front diaphragm two-group zoom lens |
| JP4847172B2 (en) * | 2006-03-28 | 2011-12-28 | 富士フイルム株式会社 | Imaging lens |
| JP5391806B2 (en) * | 2009-04-24 | 2014-01-15 | コニカミノルタ株式会社 | Imaging lens, imaging optical device, and digital device |
| WO2011004467A1 (en) * | 2009-07-08 | 2011-01-13 | コニカミノルタオプト株式会社 | Image pickup lens, image pickup device and mobile terminal |
-
2009
- 2009-06-04 CN CN2009201550380U patent/CN201508432U/en not_active Expired - Lifetime
- 2009-06-08 TW TW98210105U patent/TWM369459U/en not_active IP Right Cessation
-
2014
- 2014-04-23 JP JP2014088901A patent/JP5721881B2/en not_active Expired - Fee Related
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| CN104142561A (en) * | 2014-04-16 | 2014-11-12 | 玉晶光电(厦门)有限公司 | Optical imaging lens and electronic device applying same |
| CN112835174A (en) * | 2019-11-22 | 2021-05-25 | 天津欧菲光电有限公司 | Optical imaging system, image capturing device and electronic equipment |
| CN112835174B (en) * | 2019-11-22 | 2023-11-07 | 江西欧菲光学有限公司 | Optical imaging system, image capturing device and electronic equipment |
| CN111929822A (en) * | 2020-09-03 | 2020-11-13 | 瑞声光电科技（苏州）有限公司 | Image pickup optical lens |
| CN111929822B (en) * | 2020-09-03 | 2021-04-23 | 诚瑞光学(苏州)有限公司 | Image pickup optical lens |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2014142665A (en) | 2014-08-07 |
| TWM369459U (en) | 2009-11-21 |
| JP5721881B2 (en) | 2015-05-20 |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
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Effective date of registration: 20180930 Address after: Tokyo, Japan Patentee after: Fuji Film Corp. Address before: Japan's Saitama Prefecture Patentee before: Fujinon Corp. |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190118 Address after: East of Liuxue Road and North of Longtan Canal in Nanchang Economic and Technological Development Zone, Jiangxi Province Patentee after: NANCHANG OFILM OPTICAL-ELECTRONIC TECH Co.,Ltd. Address before: Tokyo, Japan Patentee before: Fuji Film Corp. |
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