CN100351664C - Zooming lens - Google Patents
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- CN100351664C CN100351664C CNB2005100590194A CN200510059019A CN100351664C CN 100351664 C CN100351664 C CN 100351664C CN B2005100590194 A CNB2005100590194 A CN B2005100590194A CN 200510059019 A CN200510059019 A CN 200510059019A CN 100351664 C CN100351664 C CN 100351664C
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Abstract
The present invention relates to a zoom lens which corresponds to high pixel. The present invention which is especially suitable for embarkation to small information terminal equipment can realize low cost and miniaturization. The present invention is provided with a negative first lens group (11), a positive second lens group (12) and a positive third lens group (13) from an object side in sequence, wherein when the focal length is changed, the first lens group (11) and the second lens group (12) move; the first lens group (11) is composed of a negative lens (G1) formed by a spherical lens or an aspheric lens and a positive crescent spherical lens (G2) of which the convex surface faces an object side; the second lens group (12) is composed of a paraxial biconvex plastic aspheric lens (G3), a biconvex spherical lens (G4) and a biconcave spherical lens (G5) connected with a fourth lens; the third lens group (13) is only composed of a spherical or aspheric positive lens (G6) of which the convex surface faces an image side; at least one of the first lens (G1) or the sixth lens (G6) is composed of a plastic lens.
Description
Technical field
The present invention relates to be suitable for toward for example with the zoom lens that carries in the portable phone of camera or the PDA small information terminal devices such as (Personal DigitalAssistant).
Background technology
In recent years, be accompanied by personal computer and popularize, the digital still life camera of image information input personal computers such as the landscape taken and bust (below, only be called digital camera) can be popularized rapidly to general family etc.In addition, along with the multifunction of portable phone, the portable phone that carries the band camera of small-sized image pickup module is also popularized rapidly.In addition, carrying photographing module in small-sized Signal Terminal equipment such as PDA also popularizes.
Charge coupled cell) or CMOS imaging apparatuss such as (Complementary Metal Oxide Semiconductor) possess in the equipment of these camera functions, adopted CCD (Charge Coupled Device:.These imaging apparatuss are accompanied by in recent years the progress of very miniaturization and high pixelation, for the picture pick-up device main body and carry on the lens on it, also require the miniaturization that constitutes when also requiring high-contrast.With in the portable phone of camera etc., the above device corresponding with the megabit pixel of 1,000,000 pixels is practical, and be also high with respect to the requirement of aspect of performance for example.
But, adopt in the picture pick-up device of imaging apparatus, the method as realizing zoom function has optical zoom mode and electronic zoom mode.The optical zoom mode is carried zoom lens as taking lens, changes optically and takes multiplying power.The electronic zoom mode is finely tuned etc. image by signal Processing, changes the size of subject picture electronically.Generally, the optical zoom mode can obtain high resolving power than electronic zoom mode.Thereby when carrying out zoom with high resolving power, the optical zoom mode is preferred.
In the past, as the more small-sized zoom lens of employings such as digital camera, for example Yi Xia patent documentation 1 was described.Put down in writing the zoom lens of 2 groups of zoom modes that a kind of integral body is made of 5 or 6 lens in the patent documentation 1.
Patent documentation 1: the spy opens the 2003-270533 communique
In the small information terminal devices such as portable phone of band camera, generally adopting tight shot aspect cost or the miniaturization in the past, and be accompanied by nearest multifunction, multifunction and require zoom function.Thereby, recently, in the portable phone of the band camera that adopts tight shot etc. also by adopting the electronic zoom mode to realize zoom function.But, when adopting the electronic zoom mode, as the big more then resolution of magnification deterioration more, therefore, be difficult to corresponding with the high pixelation of in recent years imaging apparatus.
For this reason, in the portable phone of band camera, also consider to carry zoom lens, adopt the optical zoom mode.At this moment, directly use exploitation to be used for the high performance zoom lens that digital camera is used, aspect cost and the compactedness aspect unrealistic.Above-mentioned patent documentation 1 described zoom lens, thus use because fewer block of lense number also can be sought miniaturization as digital camera, still, when being used for the small information terminal device, preferably seek than its miniaturization more.On the other hand, existing exploitation by about the 3 low-cost and compact zoom lens that constitute, be difficult to corresponding with high pixelation.
Summary of the invention
The present invention puts in view of the above problems and makes, and its purpose is to provide a kind of zoom lens, and it is corresponding with high pixelation and be particularly suitable for carrying, realizing in the small information terminal device low cost and compact optical system.
Zoom lens of the present invention possesses successively from object side: have the 1st group of negative refractive power, have the 2nd group of positive refractive power and have the 3rd group of positive refractive power, make the 1st group and the 2nd group to move on optical axis when zoom.The 1st group, constitute by the 1st lens and the 2nd lens, the 1st lens have negative refractive power, are made of spherical lens or non-spherical lens, and the 2nd lens are made of the positive bent moon spherical lens of convex surface towards object side.The 2nd group, constitute by the 3rd lens, the 4th lens and the 5th lens, the 3rd lens are by constituting for the plastic aspherical element lens of biconvex shape near paraxial, the 4th lens are made of the spherical lens of biconvex shape, and the 5th lens are made of the spherical lens of concave-concave shape and engage with above-mentioned the 4th lens.The 3rd group, only constitute by 1 the 6th lens with positive refractive power, the 6th lens are made of towards spherical lens or non-spherical lens as side convex surface.In addition, at least 1 in above-mentioned the 1st lens or above-mentioned the 6th lens is made of plastic lens.Also have its formation formula (1)～(4) that meet the following conditions:
2.0＜ft/fw＜4.0 (1)
4.0＜TCLw/fw＜5.0 (2)
-2.0＜φ1/φ3＜-0.5 (3)
vd(G3)＞45 (4)
Wherein, ft represents the focal length of the total system of telescope end, and fw represents the focal length of the total system of wide-angle side, and TCLw represents the total length of wide-angle side, the refracting power that φ 1 expression is the 1st group, the refracting power that φ 3 expressions are the 3rd group, the Abbe number of vd (G3) expression the 3rd lens.
Zoom lens of the present invention, thereby by making the 1st group and the 2nd group of mobile zoom that carries out on optical axis.Focus adjustment also can be undertaken by the 3rd group, but makes the 3rd group for fixing when zoom and during focusing, then in that to reduce mobile prescription face favourable.With the 3rd group during as fixing group, focusing can be undertaken by for example single the 1st group or the 1st group and the 2nd group being sidelong out forward when the shooting at close range successively.
This zoom lens, as 3 groups of 6 formations, comparing with existing about 3 easy zoom lens has increased the block of lense number, thereby, can correct aberration well.Particularly on the 2nd group, adopt and engage lens in order to reduce the aberration on the axle.Also have, in order to shorten total length, and use non-spherical lens more.In addition, satisfy each conditional magnification is distributed suitably, thereby can obtain that total length shortens, small-sized and corresponding with high pixelation high performance lens.Also because many with plastic lens thereby can seek cost degradation.
This zoom lens, the face of the picture side of the 3rd lens, preferably its be shaped as along with have near periphery with paraxial near the curvature of distinct symbols.Can suitably adopt this optimum condition according to necessity, thus more favourable in the rectification of aberration.
The effect of invention
According to zoom lens of the present invention, as 3 groups of 6 formations, its formation is suitably to adopt non-spherical lens and plastic lens etc., and satisfying each conditional makes magnification distribution etc. suitably, therefore, can realize corresponding and be particularly suitable for the low-cost small-sized optical system of in the small information terminal device, carrying with high pixelation.
Description of drawings
Fig. 1 is a lens cut-open view configuration example, corresponding with embodiment 1 of the zoom lens of expression one embodiment of the present invention.
Fig. 2 is the lens cut-open view another configuration example, corresponding with embodiment 2 of the zoom lens of expression one embodiment of the present invention.
Fig. 3 is a lens cut-open view configuration example again, corresponding with embodiment 3 of the zoom lens of expression one embodiment of the present invention.
Fig. 4 is the lens cut-open view another configuration example, corresponding with embodiment 4 of the zoom lens of expression one embodiment of the present invention.
Fig. 5 is the figure of lens data of the zoom lens of expression embodiment 1.
Fig. 6 is the figure of lens data of the zoom lens of expression embodiment 2.
Fig. 7 is the figure of lens data of the zoom lens of expression embodiment 3.
Fig. 8 is the figure of lens data of the zoom lens of expression embodiment 4.
Fig. 9 is the figure of the related value of the satisfied conditional of the lens of each embodiment of expression.
Figure 10 is the aberration diagram of spherical aberration, astigmatism and distortion of wide-angle side of the zoom lens of expression embodiment 1.
Figure 11 is the aberration diagram of spherical aberration, astigmatism and distortion of telescope end of the zoom lens of expression embodiment 1.
Figure 12 is the aberration diagram of spherical aberration, astigmatism and distortion of wide-angle side of the zoom lens of expression embodiment 2.
Figure 13 is the aberration diagram of spherical aberration, astigmatism and distortion of telescope end of the zoom lens of expression embodiment 2.
Figure 14 is the aberration diagram of spherical aberration, astigmatism and distortion of wide-angle side of the zoom lens of expression embodiment 3.
Figure 15 is the aberration diagram of spherical aberration, astigmatism and distortion of telescope end of the zoom lens of expression embodiment 3.
Figure 16 is the aberration diagram of spherical aberration, astigmatism and distortion of wide-angle side of the zoom lens of expression embodiment 4.
Figure 17 is the aberration diagram of spherical aberration, astigmatism and distortion of telescope end of the zoom lens of expression embodiment 4.
Among the figure, the 1st group of 11-; The 2nd group of 12-; The 3rd group of 13-; The GC-cloche; G1～G6-the 1st lens～the 2nd lens; The radius-of-curvature of the i lens face that Ri-begins from object side; The face of i number of beginning from object side of Di-and i+1 lens face at interval; Simg-imaging surface (shooting face); The Z1-optical axis.
Embodiment
Below, with reference to accompanying drawing embodiments of the present invention are described.
Fig. 1 represents a configuration example of the zoom lens of one embodiment of the present invention.This configuration example constitutes corresponding with the lens of the 1st numerical value embodiment described later (Fig. 5 (A)～(C)).In addition, Fig. 2～Fig. 4 represents other configuration examples of the zoom lens of present embodiment.The configuration example of Fig. 2～Fig. 4 constitutes corresponding with the lens of the 2nd～the 4th numerical value embodiment described later (Fig. 6 (A)～(C), Fig. 7 (A)～(C) and Fig. 8 (A)～(C)).Also have, Fig. 1～Fig. 4 represents the lens configuration of wide-angle side.
Among Fig. 1～Fig. 4, symbol Ri, expression with comprise aperture St by the face of the inscape of object side as No. 1, rely on the radius-of-curvature of as side (imaging side) increases successively, giving i (i=1～14) face of symbol along with giving a report.Symbol Di represent on the optical axis Z1 of i face and i+1 face face at interval.Also have, its basic comprising of each configuration example is all identical, so below, describe with constituting substantially of zoom lens shown in Figure 1.
This zoom lens is particularly suitable for carrying at the picture pick-up device that adopts the small-sized image pickup element for example in the small information terminal devices such as portable phone with camera.This zoom lens, along optical axis Z1 possess have negative refractive power the 1st group 11, have the 2nd group 12 of positive refractive power and have the 3rd group 13 of positive refractive power.Aperture St is arranged on the 2nd group 12 object side.
The last configuration of imaging surface (shooting face) Simg of this zoom lens does not have imaging apparatuss such as illustrated CCD.As between the 3rd group 13 of the final lens group and the shooting face Simg, can the corresponding formation that the phase pusher side of lens is installed, dispose various opticses.In the configuration example of Fig. 1, configuration is used to protect the cloche GC of shooting face Simg.In addition, can also dispose opticses such as infrared ray cut off filter and low-pass filter.
This zoom lens is 2 groups of zoom modes, thereby carries out zoom by making the 1st group 11 and the 2nd groups 12 and moving on optical axis.The 1st group 11 and the 2nd groups 12, along with from wide-angle side to the telescope end varifocal, and roughly mobile the track shown in the solid line in depiction 1.Focusing is for example undertaken by the 3rd group 13.And with the 3rd group 13 as fixing group, thereby then for example can focus by the single the 1st group of 11 or the 1st groups of 11 and the 2nd groups of 12 both sides are sidelong out forward when the shooting at close range successively.
The 1st group 11, constitute by the 1st lens G1 and the 2nd lens G2.The 1st lens G1 for example is made of spherical lens or non-spherical lens, has negative refractive power.When the 1st lens G1 is non-spherical lens, preferably constitute by plastic lens.The 1st lens G1 can also be depicted as the concave-concave shape as the configuration example of Fig. 2～Fig. 4 except that meniscus shaped.The 2nd lens G2 is the positive bent moon spherical lens of convex surface towards object side.
Constitute by the 3rd lens G3, the 4th lens G4 and the 5th lens G5 for the 2nd group 12.The 4th lens G4 and the 5th lens G5 form and engage lens.The 3rd lens G3 is the plastic aspherical element lens, is the biconvex shape near paraxial.The face of the picture side of the 3rd lens G3, preferably its shape along with have near periphery with paraxial near the curvature of distinct symbols, be convex form near promptly paraxial, and along with becoming concave shape near periphery as side.The 4th lens G4 is the spherical lens of biconvex shape.The 5th lens G5 is the spherical lens of concave-concave shape.
The 3rd group 13 are made of 1 the 6th lens G6.The 6th lens G6 is made of towards spherical lens or non-spherical lens as side convex surface, has positive refractive power.The 6th lens G6 during for non-spherical lens, preferably is made of plastic lens.
This zoom lens, it constitutes and satisfies following conditional (1)～(4).Wherein, ft represents the focal length of the total system of telescope end, and fw represents the focal length of the total system of wide-angle side, TCLw represents the total length of wide-angle side, the refracting power that φ 1 expression is the 1st group 11, the refracting power that φ 3 expressions are the 3rd group 13, the Abbe number of vd (G3) expression the 3rd lens G3.
2.0＜ft/fw＜4.0 (1)
4.0＜TCLw/fw＜5.0 (2)
-2.0＜φ1/φ3＜-0.5 (3)
vd(G3)＞45 (4)
Below, about as the effect and the effect of the zoom lens of above formation describe.
This zoom lens, thus carry out zoom by making the 1st group 11 and the 2nd groups 12 and on optical axis, moving.Focusing also can be undertaken by the 3rd group 13, but makes the 3rd group 13 for fixing when zoom and during focusing, then in that to reduce mobile prescription face favourable.Particularly in the portable phone etc. of band camera, moving part is favourable at aspects such as mechanicalness intensity and soundnesses at least, thereby is preferred.
This zoom lens, as 3 groups of 6 formations, comparing with existing about 3 easy zoom lens has increased the block of lense number, therefore, can correct aberration well.Particularly on the 2nd group 12, adopt and engage lens, thereby can reduce the aberration on the axle.Also have, owing to use non-spherical lens more, thus can correct aberration well and shorten total length.In addition, satisfy each conditional magnification is distributed suitably, thereby can obtain that total length shortens, small-sized and corresponding with high pixelation high performance lens.
In this zoom lens, the 3rd lens G3 is a plastic lens, also has, and makes among the 1st lens G1 or the 6th lens G6 at least 1 to be plastic lens, owing to use plastic lens, thereby can seek cost degradation more.Plastic lens and glassy phase are relatively, and be big with the changes in optical properties of temperature generation.On the other hand, when adopting small-sized capture lens, thereby recently by adopting piezoelectric element to make a plurality of mobile group of independences and can freely move control as the small drive device of travel mechanism.Therefore, even produce change of optical property, for example also can be with comparalive ease move control with its rectification, even how also can not cause corresponding problems of too with plastic lens to the 1st group 11 and the 2nd groups 12 with temperature.
Conditional (1) regulation zoom ratio.These zoom lens are if the zoom ratio about 2 times～4 times then can be kept the high-performance corresponding with high pixelation.Conditional (2) is about the total length of lens combination.If lower limit, the total length of not enough conditional (2) are too short, then particularly be difficult to keep the performance of telescope end.In addition, then functional if surpass the upper limit of conditional (2), but because total length is long, and the market competitiveness when in fact having lost commercialization.
The magnification ratio that conditional (3) regulation is the 1st group 11 and the 3rd groups 13.If the lower limit of not enough conditional (3), then dwindling aspect the total length favourablely, but, the center is excessive with the difference of the aberration of periphery, and can't obtain harmonious good lens combination.If surpass the upper limit, then total length is excessive so as preferred.The Abbe number of conditional (4) regulation the 3rd lens G3.If not satisfying conditional (4) then can't suitably suppress aberration, therefore not as preferred.
As more than, according to present embodiment, can realize low-cost compact optical system corresponding with high pixelation and that be particularly suitable in the small information terminal device, carrying.
[embodiment]
Below, describe about the concrete numerical value embodiment of the zoom lens of present embodiment.Below, the numerical value embodiment of general description the 1st～the 4th embodiment (embodiment 1～4).Fig. 5 (A)～(C) represents the corresponding concrete lens data of formation with zoom lens shown in Figure 1.In addition, Fig. 6 (A)～(C), Fig. 7 (A)～(C) and Fig. 8 (A)～(C) corresponding concrete lens data of formation of expression and Fig. 2, Fig. 3 and zoom lens shown in Figure 4 respectively.Also have, master data part in the lens data of Fig. 5 (A), Fig. 6 (A), Fig. 7 (A) and Fig. 8 (A) expression embodiment, Fig. 5 (B), Fig. 6 (B), Fig. 7 (B) and Fig. 8 (B) expression are about the data division of aspherical shape in the lens data of embodiment.Fig. 5 (C), Fig. 6 (C), Fig. 7 (C) and Fig. 8 (C) represent other data.
The face number Si hurdle of each lens data of Fig. 5 (A) etc., about the zoom lens of each embodiment, expression with comprise aperture St, cloche GC by the face of the inscape of object side as No. 1, along with the number of the face that relies on i (i=1～14) face of as side increases successively, giving symbol.Radius of curvature R i hurdle, corresponding with the symbol Ri that gives among Fig. 1 etc., the value of the radius-of-curvature of the i face that expression begins from object side.About face interval D i hurdle, also corresponding with the symbol given among Fig. 1 etc., the interval on i face Si that expression begins from object side and the optical axis of i+1 face Si+1.The unit of the value of radius of curvature R i and face interval D i is a millimeter (mm).J (j=1～7) optical parameter that Ndj, vdj hurdle represent to comprise cloche GC, begin from object side with respect to the refractive index of d line (587.6nm) and the value of Abbe number.
Each lens data of Fig. 5 (A) etc. is attached to the mark " * " in face number left side, represents that its lens face is an aspherical shape.Two sides S6, the S7 of its 3rd lens of the zoom lens of embodiment 1,2 G3 and two sides S11, the S12 of the 6th lens G6 are aspherical shape.Two sides S1, the S2 of its 1st lens of the zoom lens of embodiment 3 G1 and two sides S6, the S7 of the 3rd lens G3 are aspherical shape.The zoom lens of embodiment 4, two sides S1, the S2 of its 1st lens G1 and two sides S6, the S7 of the 3rd lens G3, to also have two sides S11, the S12 of the 6th lens G6 be aspherical shape.These non-spherical lenses all are plastic lens.In the basic lens data of Fig. 5 (A) etc., as these aspheric radius-of-curvature, near near the numerical value of the radius-of-curvature of (paraxial) the expression optical axis.
The numerical value that the numerical value of each aspherical surface data of Fig. 5 (B) etc., mark " E " expression are connected on it under is the end " power exponent " with 10, represents that it is that the preceding numerical value of the represented numerical value of the exponential function at the end and " E " multiplies each other with 10.For example " if 1.0E-02 ", then expression " 1.0 * 10
-2".
Aspherical surface data is write down each the coefficient A by the formula of the aspherical shape of representing with following formula (A)
i, KA value.In more detail, Z represents that point on the aspheric surface of the high h of distance optical axis position is down to the length (mm) of the vertical line that connects plane (plane vertical with optical axis) on aspheric surface summit.
Z＝C·h
2/{1+(1-KA·C
2·h
2)
1/2}+∑A
i·h
i (A)
Wherein
Z: the aspheric degree of depth (mm)
H: the distance from the optical axis to the lens face (highly) (mm)
KA: eccentricity
C: paraxial curvature=1/R (R: paraxial radius-of-curvature)
A
i: the asphericity coefficient of the i time (i=4,6,8,10)
The zoom lens of each embodiment for along with changing multiplying power, making the 1st group 11 and the 2nd groups 12 and move on optical axis, is variable and all make the face interval D 4 of the front and back of these each groups, the value of D10.As these face interval D 4, the data of D10 when changing multiplying power, the value of each embodiment of expression wide-angle side and telescope end among Fig. 5 (C), Fig. 6 (C), Fig. 7 (C) and Fig. 8 (C).
Fig. 9 to above-mentioned each conditional (1)～(4) related value, summarizes expression about each embodiment.As shown in Figure 9, the value of each embodiment is in the numerical range of each conditional (1)～(4).
Spherical aberration, astigmatism and the distortion (distortion aberration) of the wide-angle side of the zoom lens of Figure 10 (A)～(C) expression embodiment 1.The same aberration of Figure 11 (A)～(C) expression telescope end.Each aberration diagram, expression is the aberration of reference wavelength with the d line, and spherical aberration diagram is also represented the aberration about g line (wavelength 435.8nm), C line (wavelength 656.3nm).Among the astigmatism figure, solid line is represented radially the aberration of (sagittal), the aberration that dotted line is represented tangential direction.FNO. represent the F value, ω represents angle of half field-of view.
Equally, about all aberrations of the zoom lens of embodiment 2 shown in Figure 12 (A)～(C) (wide-angle side) and Figure 13 (A)～(C) (telescope end).About all aberrations of embodiment 3 shown in Figure 14 (A)～(C) (wide-angle side) and Figure 15 (A)～(C) (telescope end).About all aberrations of embodiment 4 shown in Figure 16 (A)～(C) (wide-angle side) and Figure 17 (A)～(C) (telescope end).
As indicated in each above numeric data and each aberration diagram, about each embodiment, can realize being suitable for carrying in the small information terminal device, compact and high performance varifocal optical system.
Also have, the present invention is not limited to the respective embodiments described above and each embodiment, can carry out various distortion.For example, the value of the radius-of-curvature of each lens composition, face interval and refractive index etc. are not limited to the value shown in above-mentioned each numerical value embodiment, also can get other values.
Claims (3)
1. zoom lens, it is characterized in that: constitute by having the 1st group of negative refractive power, have the 2nd group of positive refractive power and having the 3rd group of positive refractive power successively from object side, when zoom, make above-mentioned the 1st group and above-mentioned the 2nd group on optical axis, to move;
Above-mentioned the 1st group, constitute by the 1st lens with negative refractive power and the 2nd lens, the 1st lens are made of spherical lens or non-spherical lens, and the 2nd lens are made of the positive bent moon spherical lens of convex surface towards object side;
Above-mentioned the 2nd group, constitute by the 3rd lens, the 4th lens and the 5th lens, the 3rd lens are by constituting for the plastic aspherical element lens of biconvex shape near paraxial, the 4th lens are made of the spherical lens of biconvex shape, and the 5th lens are made of the spherical lens of concave-concave shape and engage with above-mentioned the 4th lens;
Above-mentioned the 3rd group only is made of 1 the 6th lens with positive refractive power, and the 6th lens are made of towards spherical lens or non-spherical lens as side convex surface;
In above-mentioned the 1st lens or above-mentioned the 6th lens at least 1 is made of plastic lens;
And, its formation formula (1)～(4) that meet the following conditions:
2.0＜ft/fw＜4.0 (1)
4.0＜TCLw/fw＜5.0 (2)
-2.0＜φ1/φ3＜-0.5 (3)
vd(G3)＞45 (4)
Wherein: ft is that the focal length of the total system of telescope end, the focal length that fw is the total system of wide-angle side, the total length that TCLw is wide-angle side, the refracting power that φ 1 is the 1st group, refracting power, the vd (G3) that φ 3 is the 3rd group are the Abbe number of the 3rd lens.
2. zoom lens according to claim 1 is characterized in that: the face of the picture side of above-mentioned the 3rd lens, its be shaped as along with have near periphery with paraxial near the curvature of distinct symbols.
3. zoom lens according to claim 1 and 2 is characterized in that: above-mentioned the 3rd group when zoom and focusing the time be fixed.
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| CNB2005100590194A CN100351664C (en) | 2005-03-24 | 2005-03-24 | Zooming lens |
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| CNB2005100590194A CN100351664C (en) | 2005-03-24 | 2005-03-24 | Zooming lens |
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| CN105001315A (en) * | 2010-01-14 | 2015-10-28 | 默克专利股份公司 | Variants of group 6 allergens of the tru grasses having reduced allergeneity due to mutagenesis of profile residues |
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| CN102109660A (en) * | 2009-12-25 | 2011-06-29 | 佛山普立华科技有限公司 | Image-capturing lens |
| JP7035839B2 (en) | 2018-06-19 | 2022-03-15 | 株式会社リコー | Imaging lens system and imaging device |
| CN109143541B (en) * | 2018-08-14 | 2021-03-02 | 瑞声光学解决方案私人有限公司 | Image pickup optical lens |
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| US20030210471A1 (en) * | 2001-11-26 | 2003-11-13 | Olympus Optical Co., Ltd. | Zoom lens, and electronic imaging system using the same |
| US20050024739A1 (en) * | 2002-03-14 | 2005-02-03 | Takayuki Noda | Two-group zoom lens |
| JP2003344769A (en) * | 2002-03-20 | 2003-12-03 | Ricoh Co Ltd | Zoom lens, and camera and portable information terminal using zoom lens |
| US20030234985A1 (en) * | 2002-06-20 | 2003-12-25 | Nikon Corporation | Super wide-angle zoom lens system |
| US20040212898A1 (en) * | 2003-04-28 | 2004-10-28 | Sony Corporation | Zoom lens and an imaging apparatus |
| US20050057818A1 (en) * | 2003-09-11 | 2005-03-17 | Kenichi Sato | Wide-angle zoom lens |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105001315A (en) * | 2010-01-14 | 2015-10-28 | 默克专利股份公司 | Variants of group 6 allergens of the tru grasses having reduced allergeneity due to mutagenesis of profile residues |
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