CN101581826B - Zoom lens and camera device - Google Patents
Zoom lens and camera device Download PDFInfo
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- CN101581826B CN101581826B CN2009101390742A CN200910139074A CN101581826B CN 101581826 B CN101581826 B CN 101581826B CN 2009101390742 A CN2009101390742 A CN 2009101390742A CN 200910139074 A CN200910139074 A CN 200910139074A CN 101581826 B CN101581826 B CN 101581826B
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Abstract
The present invention provides a zoom lens which has high zoom ratio and small size and a camera device, wherein the zoom lens is provided with the following components from the object side: a first lens group which is fixed in zooming and focusing and has positive refractive power; a second lens group which moves in zooming and has negative refractive power; a third lens group which is fixed in zooming and focusing and has positive refractive power; a fourth lens group which moves in zooming and has positive refractive power; and a fifth lens group which moves in zooming and has positive refractive power. When the zoom lens zooms from a wide-angle end to the telescope end, the fifth lens firstly moves to the object side and reverses to the image side in the middle way for moving with a mode of drawing-out a moving track with a convex arc shape which projects into the object side. Furthermore the following conditional expression is satisfied, wherein deltaTM is the movement amount of the fifth lens group when zooming from a lens position of (fw*ft)<1/2> to a lens position of the telescope end, fw is the focal distance of the whole system of the wide angle end, and ft is the focal distance of the whole system of the telescope end. 1.4< deltaTM/fw< 3.0...(1).
Description
Technical field
The present invention relates to a kind of video camera, digital static video camera, and the zoom lens and camera head of information portable terminal device (PDA:Personal Digital Assistance) etc. of being applicable to.
Background technology
In recent years, in camera heads such as the static video camera of number, miniaturization progress along with CCD (Charge CoupledDevice) or CMOS imaging apparatuss such as (Complementary Metal Oxide Semiconductor) requires the miniaturization as device integral body.Therefore, exploitation recently has by being made as the light path of the lens combination so-called bending optical system of bending halfway, the camera head of the depth direction slimming when seeking to be assembled into camera head.
Patent documentation 1: No. 3750672 communique of patent
Patent documentation 2: patent disclosure 2003-202501 communique
Patent documentation 3: patent disclosure 2005-345714 communique
Yet the zoom lens of being put down in writing at patent documentation 1 help miniaturization because lens arrangement sheet number is few, but when seeking the hypermutation multiple proportions, and the axle in the distally that is visible is gone up chromatic aberation and in the correction of the multiplying power chromatic aberation of the wide-angle side difficulty that becomes.Particularly, the 1st lens combination is made of 1 negative lens, prism and 1 positive lens, and the 2nd lens combination is made of 1 negative lens and 1 positive lens, and the 5th lens combination only is made of 1 positive lens.At this, the 5th lens combination is if only be made of 1 positive lens, and then when seeking the hypermutation multiple proportions, especially change of the filed curvature when the focusing of telescope end and the change of multiplying power chromatic aberation are big, so the performance variations when focusing is big.And, the 5th lens combination when becoming times monotonously to the picture side shifting, so miniaturization and in the whole change aberration correction in the zone difficulty that becomes doubly.
And the zoom lens of being put down in writing at patent documentation 2 are made as the structure of the formula of meeting the following conditions, but this moment, compare with the difference of the focal length of telescope end and wide-angle side, and the lens length overall is longer, if will seek the hypermutation multiple proportions, and the miniaturization difficulty that becomes then.Amount of movement during the change of the 5th lens combination of these zoom lens times is less in addition, miniaturization and in the whole change aberration correction in the zone difficulty that becomes doubly.
1.45＜∑d/(ft-fw)＜2.2
Herein,
∑ d be from by the summit, thing side of the lens of thing side length of lens along optical axis to imaging surface,
Fw is the focal length of the total system of wide-angle side,
Ft is the focal length of the total system of telescope end.
And, the zoom lens of being put down in writing at patent documentation 3 are characterised in that the 5th lens combination moves and the 5th lens have at least 1 positive lens and at least 1 negative lens successively from the thing side when focusing, relevant lens material satisfies the defined terms formula, especially change of the filed curvature when the focusing of telescope end and the change of multiplying power chromatic aberation are big, and the performance variations when therefore focusing is big.And, the position of the 5th lens combination telescope end than in wide-angle side more from image planes away from, so miniaturization and in the whole change aberration correction in the zone difficulty that becomes doubly.
Summary of the invention
The present invention proposes in view of this problem points, and its purpose is to provide a kind of zoom lens and camera head of seeking hypermutation multiple proportions and miniaturization.
The related zoom lens of the 1st viewpoint of the present invention constitute, and set successively from the thing side: the 1st lens combination, and it is becoming doubly and is fixing during focusing and have a positive refracting power; The 2nd lens combination, it moves when becoming times and has a negative refracting power; The 3rd lens combination, it is becoming doubly and is fixing during focusing and have a positive refracting power; The 4th lens combination, it moves when becoming times and has a positive refracting power; The 5th lens combination, it moves when becoming times and has a positive refracting power, from wide-angle side when telescope end becomes times, above-mentioned the 5th lens combination, at first to the thing side shifting then halfway to being that the mode of the motion track of protruding convex arc shaped moves to depict towards the thing side as side counter-rotating, and formula meets the following conditions.Herein, Δ TM is from (fwft)
1/2The amount of movement of 5th lens combination of lens position during to the change of the lens position of telescope end times, fw is the focal length of the total system of wide-angle side, ft is the focal length of the total system of telescope end.
1.4＜ΔTM/fw＜3.0……(1)
In the related zoom lens of the 1st viewpoint of the present invention, constitute from the thing side set successively refracting power be positive and negative, just, just, positive 5 lens combination, and when becoming times, move the 2nd lens combination, the 4th lens combination, and the zoom lens of the 5th lens combination and the 5 prescription formulas that constitute in, seek the optimization of lens arrangement, especially when becoming doubly and focusing, the 1st lens combination is made as fixing all the time, the proper conditions formula, and amount of movement and motion track optimization by making the 5th lens combination, easily seek the hypermutation multiple proportions and suppress the lens length overall and miniaturization.
And, further,, help hypermutation multiple proportions and miniaturization more by suitable employing and satisfied following preferred structure.
In the related zoom lens of the 1st viewpoint of the present invention, preferred the 5th lens combination moves when becoming times, make under the state of object distance infinity, in the position of telescope end than more approaching picture side in the position of wide-angle side.
And formula preferably meets the following conditions.Herein, Δ MW is made as from the lens position of wide-angle side at (fwft)
1/2The change times of lens position the time the amount of movement of the 5th lens combination.
0.8＜ΔMW/fw＜1.6……(2)
And formula preferably meets the following conditions.Herein, f45t is made as the synthetic focal length of the 4th lens combination and the 5th lens combination of telescope end, and f45w is made as the synthetic focal length of the 4th lens combination and the 5th lens combination of wide-angle side, and f45m is made as at (fwft)
1/2The 4th lens combination of lens position and the synthetic focal length of the 5th lens combination.
1.2＜f45t/f45w＜1.5……(3)
1.3＜f45t/f45m＜1.6……(4)
And, in the related zoom lens of the 1st viewpoint of the present invention, successively by having preceding group of negative refracting power, the reflection part of bending light path, having back group of positive refracting power and constitute, back group of the 1st lens combination also can be to have the lens L12 with positive refracting power and have the structure of the lens L13 of positive refracting power to the 1st lens combination from the thing side.Thus, by be made as by be configured in the 1st lens combination reflection part and with the structure of the bending optical system of light path bending, keep the good optical performance, and suppress the length of the thickness direction of optical system, it is easy that the slimming when being assembled into camera head becomes.
When the 1st lens combination was made as said structure, formula preferably further met the following conditions.Herein, N12 is made as the refractive index of lens L12 at the d line, and N13 is made as the refractive index of lens L13 at the d line, and v12 is made as the Abbe number of lens L12 at the d line, and v13 is made as the Abbe number of lens L13 at the d line.
1.43＜(N12+N13)/2＜1.48……(5)
83＜(v12+v13)/2＜90……(6)
And preceding group of the 1st lens combination can be that the lens L11 of the negative refracting power of having of concave surface constitutes by the image planes side also.At this moment, the formula that preferably meets the following conditions.Herein, N11 is made as the refractive index of lens L11 at the d line, and v11 is made as the Abbe number of lens L11 at the d line.
0.4＜N11-(N12+N13)/2＜0.5……(7)
50＜(v12+v13)/2-v11＜60……(8)
And, at least 1 the non-spherical lens of the lens L13 in preferred the 1st lens combination for having aspherical shape with positive refracting power.
The related zoom lens of the 2nd viewpoint of the present invention set successively from the thing side: the 1st lens combination, and it is becoming doubly and is fixing during focusing and have a positive refracting power; The 2nd lens combination, it moves when becoming times and has a negative refracting power; The 3rd lens combination, it is becoming doubly and is fixing during focusing and have a positive refracting power; The 4th lens combination, it moves when becoming times and has a positive refracting power; The 5th lens combination, it moves when becoming times and has a positive refracting power, the 1st lens combination from the thing side successively by have preceding group of negative refracting power, with the reflection part of light path bending, have back group of positive refracting power and constitute.And, back group of lens L13 that has lens L12 and have positive refracting power of the 1st lens combination with positive refracting power, and formula meets the following conditions.Herein, N12 is made as the refractive index of lens L12 at the d line, and N13 is made as the refractive index of lens L13 at the d line, and v12 is made as the Abbe number of lens L12 at the d line, and v13 is made as the Abbe number of lens L13 at the d line.
1.43＜(N12+N13)/2＜1.48……(5)
83＜(v12+v13)/2＜90……(6)
In the related zoom lens of the 2nd viewpoint of the present invention, by being made as by being configured in reflection part in the 1st lens combination and light path by the structure of the bending optical system of bending, keep the good optical performance, and the length of the thickness direction of inhibition optical system, it is easy that the slimming when being assembled into camera head becomes.And, constitute from the thing side set successively refracting power be positive and negative, just, just, positive 5 lens combination, and when becoming times, make the 2nd lens combination, the 4th lens combination, and the zoom lens of the 5 prescription formulas that move of the 5th lens combination in, seek the optimization of lens arrangement, especially about lens material proper conditions formula, and by making the structural optimization of the 1st lens combination, especially suppress the increase of the chromatic aberation of telescope end, seek hypermutation multiple proportions and aberration correction well easily, and miniaturization on the whole.
And, further,, and more help hypermutation multiple proportions and miniaturization by suitable employing and satisfied following preferred structure.
In the related zoom lens of the 2nd viewpoint of the present invention, preceding group of the 1st lens combination can be that the lens L11 of the negative refracting power of having of concave surface constitutes by the image planes side also.At this moment, the formula that preferably meets the following conditions.Herein, N11 is made as the refractive index of lens L11 at the d line, and v11 is made as the Abbe number of lens L11 at the d line.
0.4＜N11-(N12+N13)/2＜0.5……(7)
50＜(v12+v13)/2-v11＜60……(8)
And, at least 1 the non-spherical lens of the lens L13 in preferred the 1st lens combination for having aspherical shape with positive refracting power.
And in the related zoom lens of the of the present invention the 1st or the 2nd viewpoint, formula preferably meets the following conditions.Herein, ∑ d is made as from by the summit, thing side of the lens of the thing side length of lens along optical axis to imaging surface, and fw is made as the focal length of the total system of wide-angle side, and ft is made as the focal length of the total system of telescope end.
1.35＜∑d/(ft-fw)＜1.45……(9)
And, in the related zoom lens of the of the present invention the 1st or the 2nd viewpoint, also can constitute by moving the 5th lens combination and focus on.At this moment, the formula that further preferably meets the following conditions.Herein, β 5t is made as the imaging multiplying power in the 5th lens combination of telescope end of infinity object.
0.65＜β5t＜0.88……(10)
And in the related zoom lens of the of the present invention the 1st or the 2nd viewpoint, the 5th lens combination also can be made of lens L51 with negative refracting power and the lens L52 with positive refracting power.At this moment, the formula that further preferably meets the following conditions.Herein, N51 is made as the refractive index of lens L51 at the d line, and N52 is made as the refractive index of lens L52 at the d line, and v51 is made as the Abbe number of lens L51 at the d line, and v52 is made as the Abbe number of lens L52 at the d line.
N51＜N52……(11)
v51＜v52……(12)
And in the related zoom lens of the of the present invention the 1st or the 2nd viewpoint, aperture diaphragm also can be provided near the thing side of the 3rd lens combination.
Possess the related zoom lens of the of the present invention the 1st or the 2nd viewpoint and output and imaging apparatus based on camera head of the present invention by the corresponding image pickup signal of the optical image of this zoom lens formation.
In based on camera head of the present invention, the high performance zoom lens of seeking miniaturization of the present invention is used as imaging lens system, seek the miniaturization of device integral body.
According to the related zoom lens of the 1st viewpoint of the present invention, in the zoom lens of 5 prescription formulas, seek the optimization of lens arrangement, especially when becoming doubly and focusing, the 1st lens combination is made as fixing all the time, the proper conditions formula, and make the amount of movement and the motion track optimization of the 5th lens combination, so can seek the hypermutation multiple proportions and suppress the lens length overall and miniaturization.
According to the related zoom lens of the 2nd viewpoint of the present invention, be made as the structure that helps miniaturization as bending optical system, and especially about lens material proper conditions formula, and make the structural optimization of the 1st lens combination, so especially can suppress telescope end chromatic aberation increase and keep hypermutation multiple proportions and good optical performance, and seek whole miniaturization.
And, according to camera head of the present invention, the high performance zoom lens of seeking miniaturization of the invention described above is used as imaging lens system, thus the good shooting performance of hypermutation multiple proportions can be kept, and seek the miniaturization of device integral body.
Description of drawings
Fig. 1 is the 1st structure example of the related zoom lens of expression one embodiment of the present invention, is the lens profile figure corresponding to embodiment 1.
Fig. 2 is the 2nd structure example of the related zoom lens of expression one embodiment of the present invention, is the lens profile figure corresponding to embodiment 2.
Fig. 3 is the 3rd structure example of the related zoom lens of expression one embodiment of the present invention, is the lens profile figure corresponding to embodiment 3.
Fig. 4 is the 4th structure example of the related zoom lens of expression one embodiment of the present invention, is the lens profile figure corresponding to embodiment 4.
Fig. 5 is the figure of the lens data of the related zoom lens of expression embodiment 1, (A) the basic lens data of expression, and (B) expression is along with the face that becomes the part that doubly moves data at interval.
Fig. 6 is the figure of expression about the aspheric data of the related zoom lens of embodiment 1.
Fig. 7 is the figure of the lens data of the related zoom lens of expression embodiment 2, (A) the basic lens data of expression, and (B) expression is along with the face that becomes the part that doubly moves data at interval.
Fig. 8 is the figure of expression about the aspheric data of the related zoom lens of embodiment 2.
Fig. 9 is the figure of the lens data of the related zoom lens of expression embodiment 3, (A) the basic lens data of expression, and (B) expression is along with the face that becomes the part that doubly moves data at interval.
Figure 10 is the figure of expression about the aspheric data of the related zoom lens of embodiment 3.
Figure 11 is the figure of the lens data of the related zoom lens of expression embodiment 4, (A) the basic lens data of expression, and (B) expression is along with the face that becomes the part that doubly moves data at interval.
Figure 12 is the figure of expression about the aspheric data of the related zoom lens of embodiment 4.
Figure 13 sums up the figure of expression about the value of conditional to each embodiment.
Figure 14 is the aberration diagram of the various aberrations of the related zoom lens wide-angle side of expression embodiment 1, (A) expression spherical aberration, (B) expression astigmatism (non-check and accept poor), (C) expression distortion, (D) expression multiplying power chromatic aberation.
Figure 15 is the aberration diagrams of the related zoom lens of expression embodiment 1 at the various aberrations of zone line, (A) expression spherical aberration, (B) expression astigmatism, (C) expression distortion, (D) expression multiplying power chromatic aberation.
Figure 16 is the aberration diagram of the various aberrations of the related zoom lens telescope end of expression embodiment 1, (A) expression spherical aberration, (B) expression astigmatism, (C) expression distortion, (D) expression multiplying power chromatic aberation.
Figure 17 is the aberration diagram of the various aberrations of the related zoom lens wide-angle side of expression embodiment 2, (A) expression spherical aberration, (B) expression astigmatism, (C) expression distortion, (D) expression multiplying power chromatic aberation.
Figure 18 is the aberration diagrams of the related zoom lens of expression embodiment 2 at the various aberrations of zone line, (A) expression spherical aberration, (B) expression astigmatism, (C) expression distortion, (D) expression multiplying power chromatic aberation.
Figure 19 is the aberration diagram of the various aberrations of the related zoom lens telescope end of expression embodiment 2, (A) expression spherical aberration, (B) expression astigmatism, (C) expression distortion, (D) expression multiplying power chromatic aberation.
Figure 20 is the aberration diagram of the various aberrations of the related zoom lens wide-angle side of expression embodiment 3, (A) expression spherical aberration, (B) expression astigmatism, (C) expression distortion, (D) expression multiplying power chromatic aberation.
Figure 21 is the aberration diagrams of the related zoom lens of expression embodiment 3 at the various aberrations of zone line, (A) expression spherical aberration, (B) expression astigmatism, (C) expression distortion, (D) expression multiplying power chromatic aberation.
Figure 22 is the aberration diagram of the various aberrations of the related zoom lens telescope end of expression embodiment 3, (A) expression spherical aberration, (B) expression astigmatism, (C) expression distortion, (D) expression multiplying power chromatic aberation.
Figure 23 is the aberration diagram of the various aberrations of the related zoom lens wide-angle side of expression embodiment 4, (A) expression spherical aberration, (B) expression astigmatism, (C) expression distortion, (D) expression multiplying power chromatic aberation.
Figure 24 is the aberration diagrams of the related zoom lens of expression embodiment 4 at the various aberrations of zone line, (A) expression spherical aberration, (B) expression astigmatism, (C) expression distortion, (D) expression multiplying power chromatic aberation.
Figure 25 is the aberration diagram of the various aberrations of the related zoom lens telescope end of expression embodiment 4, (A) expression spherical aberration, (B) expression astigmatism, (C) expression distortion, (D) expression multiplying power chromatic aberation.
Figure 26 is the outside drawing of expression as a structure example of the digital static video camera of the related camera head of one embodiment of the present invention.
Among the figure: GC-optics, G1-the 1st lens combination, G2-the 2nd lens combination, G3-the 3rd lens combination, G4-the 4th lens combination, the St-aperture diaphragm, Ri-is from the radius-of-curvature of i lens face of thing side, Di-is from thing side i the face interval with i+1 lens face, Z1-optical axis, 100-imaging apparatus.
Embodiment
Below, with reference to drawing embodiments of the present invention are described in detail.
Fig. 1 (A), (B), (C) represent the 1st structure example of the zoom lens that one embodiment of the present invention is related.This structure example is corresponding to the 1st numerical value embodiment (Fig. 5 (A), (B) and lens arrangement Fig. 6) described later.In addition, Fig. 1 (A) is corresponding to the optical system configurations of wide-angle side under the infinity focusing state (shortest focal length state), Fig. 1 (B) is corresponding to the optical system configurations of zone line under the infinity focusing state (middle focal length state), and Fig. 1 (C) is corresponding to the optical system configurations of telescope end under the infinity focusing state (longest focal length state).Similarly, show cross-section structure at Fig. 2 (A), (B), (C)～Fig. 4 (A), (B), (C) corresponding to the 2nd to the 4th structure example of the lens arrangement of the 2nd to the 4th numerical value embodiment described later.In Fig. 1 (A), (B), (C)～Fig. 4 (A), (B), (C), symbol Ri represents to lean on most the face of the inscape of thing side to be made as the 1st face, the radius-of-curvature of enclosing i face of symbol along with increasing successively towards picture side (imaging side).Symbol Di represent on the optical axis Z1 of i face and i+1 face face at interval.And to symbol Di only to face interval D 8, D13, D16, D21, the D24 of the part that changes enclose symbol along with becoming doubly.In addition because each structure example is identical with basic structure, below with the 1st structure example shown in Fig. 1 (A), (B), (C) as describing substantially.
These zoom lens possess the 1st lens combination G1, the 2nd lens combination G2, the 3rd lens combination G3, the 4th lens combination G4 and the 5th lens combination G5 successively along optical axis Z1 from the thing side.Optical aperture diaphragm St preferably is provided near the thing side of the 3rd lens combination G3.
These zoom lens for example except Digital Video, and photographic equipment such as digital static video camera, can also be equipped on information portable terminal devices such as PDA.These zoom lens as side configuration the corresponding parts of structure with the photography portion of the video camera that is carried.For example, the imaging surface (shooting face) at these zoom lens disposes CCD (Charge Coupled Device) or CMOS imaging apparatuss 100 such as (Complementary Metal OxideSemiconductor).Imaging apparatus 100 outputs and the corresponding image pickup signal of optical image that forms by these zoom lens.At least, constitute the camera head of present embodiment with these zoom lens and imaging apparatus 100.Also can between final lens group (the 5th lens combination G5) and imaging apparatus 100, dispose various optics GC according to the structure of the camera side that lens are installed.For example also can dispose flat opticses such as the cover glass of shooting face protection usefulness or infrared intercepting filter.
These zoom lens constitute by changing each group and become doubly at interval.In more detail, make the 1st lens combination G1, the 3rd lens combination G3 become doubly and be (Chang Time all the time during focusing) fixing, make the 2nd lens combination G2, the 4th lens combination G4, and the 5th lens combination G5 mobile on optical axis Z1 when becoming times.
In more detail, along with from wide-angle side to middle and then become doubly to telescope end, each lens combination is the state from the state of Fig. 1 (A) to Fig. 1 (B) for example, and then describes in the drawings the track of representing with solid line and move to the state of Fig. 1 (C).Especially the 5th lens combination G5 from wide-angle side when telescope end becomes times, with at first to the thing side shifting then halfway towards being that the mode of the motion track of protruding convex arc shaped moves to depict towards the thing side as the side counter-rotating.And the 5th lens combination G5 moves when becoming times as follows: object distance into the state of infinity under in the position of telescope end than more approaching picture side in the position of wide-angle side.The 5th lens combination G5 has focus function, also moves when focusing.
At this, about moving of the 5th lens combination G5, the formula that preferably meets the following conditions (1), (2).Herein, Δ TM is made as from (fwft)
1/2Lens position to the amount of movement of the 5th lens combination G5 of the lens position of telescope end.Fw is made as the focal length of the total system of wide-angle side, and ft is made as the focal length of the total system of telescope end.And Δ MW is made as lens position from wide-angle side to (fwft)
1/2The amount of movement of the 5th lens combination G5 of lens position.And, the amount of movement when Δ TM, Δ MW are made as change times under the infinity focusing state.
1.4＜ΔTM/fw＜3.0……(1)
0.8＜ΔMW/fw＜1.6……(2)
The 1st lens combination G1 integral body has positive refracting power.The 1st lens combination G1 for example can comprise successively from the thing side: have preceding group of G1F of negative refracting power, as the right-angle prism LP of the reflection part of bending light path, have back group of G1R of positive refracting power.The preceding group of G1F of preferred the 1st lens combination G1 is that the lens L11 of the negative refracting power of having of concave surface constitutes by the image planes side.Preferred back group G1R is made of with these two lens of lens L13 with positive refracting power the lens L12 with positive refracting power.At least 1 of the lens L13 with positive refracting power in the preferred back group G1R is aspherical shape.In addition, also can replace right-angle prism LP to use other reflection parts such as catoptron.
The 2nd lens combination G2 integral body has negative refracting power.The 2nd lens combination G2 for example can be made of 3 lens.More specifically, for example can comprise successively from the thing side: as side be the lens L21 of concave surface, joint (joint) lens that constitute by negative lens L22 and positive lens L23.
The 3rd lens combination G3 integral body has positive refracting power.The 3rd lens combination G3 for example can be made of 1 positive lens L31.
The 4th lens combination G4 integral body has positive refracting power.The 4th lens combination G4 for example can be made of 3 lens.More specifically, for example can constitute by following lens successively: the joint lens that constitute by positive lens L41 and negative lens L42, and positive lens L43 from the thing side.
The 5th lens combination G5 integral body has positive refracting power.The 5th lens combination G5 for example can be made of following lens successively from the thing side: the lens L51 of negative refraction power and the lens L52 of positive refracting power.The lens L52 of the lens L51 of negative refracting power and positive refracting power also can be the joint lens.
Preferred these zoom lens constitute the formula that suitably selectively meets the following conditions.Herein, f45t is the 4th lens G4 of telescope end and the synthetic focal length of the 5th lens G5, and f45w is the 4th lens G4 of wide-angle side and the synthetic focal length of the 5th lens G5, and f45m is at (fwft)
1/2The 4th lens G4 of lens position and the synthetic focal length of the 5th lens G5.
1.2＜f45t/f45w＜1.5……(3)
1.3＜f45t/f45m＜1.6……(4)
Be preferably, these zoom lens constitute the formula that suitably optionally meets the following conditions about lens L11, L12 in the 1st lens combination G1, L13.Herein, N12 is the refractive index of the d line of lens L12, and N13 is the refractive index of the d line of lens L13, and v12 is the Abbe number of the d line of lens L12, and v13 is the Abbe number of the d line of lens L13.And N11 is the refractive index of the d line of lens L11, and v11 is the Abbe number of the d line of lens L11.
1.43＜(N12+N13)/2＜1.48……(5)
83＜(v12+v13)/2＜90……(6)
0.4＜N11-(N12+N13)/2＜0.5……(7)
50＜(v12+v13)/2-v11＜60……(8)
And formula preferably meets the following conditions.Herein, ∑ d be from by the summit, thing side of the lens L11 of thing side length of lens along optical axis to imaging surface, fw is the focal length of the total system of wide-angle side, ft is the focal length of the total system of telescope end.
1.35＜∑d/(ft-fw)＜1.45……(9)
And, preferably constitute the formula that suitably optionally meets the following conditions about the 5th lens combination G5.β 5t is the imaging multiplying power of the 5th lens combination G5 of the telescope end of infinity object.N51 is the refractive index of the d line of the lens L51 in the 5th lens combination G5, and N52 is the refractive index of the d line of lens L52, and v51 is the Abbe number of the d line of lens L51, and v52 is the Abbe number of the d line of lens L52.
0.65＜β5t＜0.88……(10)
N51＜N52……(11)
v51＜v52……(12)
Figure 26 (A), (B) represent digital static video camera as an example of the camera head that carries these zoom lens.The outward appearance of the static video camera 10 of this number that the outward appearance of the static video camera 10 of this number seen from the front side of Figure 26 (A) expression especially, Figure 26 (B) expression are seen from rear side.The static video camera 10 of this number possesses the flash light emission portion 21 of illumination flash (ス ト ロ ボ) in the central upper of its front face side.And, be provided with photography aperture (Open mouth in the side portion of the flash light emission portion 21 of its front face side from the light incident of reference object) 22.The static video camera 10 of this number also in the above side possess release-push 23 and power knob 24.The static video camera 10 of this number also overleaf side possess display part 25 and operating portion 26,27.Display part 25 is used to show the image of being made a video recording.In the static video camera 10 of this number, carry out the shooting of the rest image of 1 frame part by pressing operation release-push 23, be recorded in the storage card (not shown) that is loaded into digital static video camera 10 by this shooting acquired image data.
The static video camera 10 of this number possesses imaging lens system 1 in framework inside.The related zoom lens of present embodiment have been used as this imaging lens system 1.Imaging lens system 1 is configured to lean on most the lens L11 of thing side to be positioned at the photography aperture 22 that is located at front face side.Imaging lens system 1 makes the inside that as one man is assembled into digital static video camera 10 by the longitudinal direction of optical axis Z1 after the bending of right-angle prism LP and camera body as a whole at longitudinal direction.In addition, also can make optical axis Z1 after the bending become the transverse direction ground of video camera body, be assembled into the inside of digital static video camera 10 as a whole at transverse direction.
Then, function and the effect that constitutes zoom lens as above is described.
In these zoom lens, set refracting power successively for just from the thing side, negative, just, just, these 5 lens combination just, when becoming times, move the 2nd lens combination G2, the 4th lens combination G4, in the zoom lens of the 5 prescription formulas that reach the 5th lens combination G5 and constitute, seek the optimization of lens arrangement, especially when becoming doubly and focusing, the 1st lens combination G1 is made as fixing all the time, mobile proper conditions formula (1) about the 5th lens combination G5, (2), and the amount of movement by making the 5th lens combination G5 and motion track the most suitableization, thereby can seek the hypermutation multiple proportions and suppress the lens length overall and miniaturization.
And, in these zoom lens, be configured in the structure of the bending optical system of the reflection part bending in the 1st lens combination G1 by being made as optical routing, thereby keep the good optical performance and suppress the length of the thickness direction of optical system, it is easy that the slimming when being assembled into camera head becomes.And, especially about the lens material in the 1st lens combination G1, make the structural optimization of the 1st lens combination G1 by proper conditions formula (5), (6), (7), (8), can suppress telescope end chromatic aberation increase and seek the hypermutation multiple proportionsization easily.
And, be made as aspherical shape by at least 1 face, recoverable filed curvature (image planes gulf song) and distortion with the lens L13 in the 1st lens combination G1 with positive refracting power.
Further, by the 5th lens combination G5 according under the state of object distance infinity in the position of telescope end than more approaching mode as side moves in the position of wide-angle side, and the group of comparing the 4th lens combination G4 that can enlarge telescope end more and the 5th lens combination G5 with wide-angle side at interval, realizes easily that therefore hypermutation doubly changes.In these zoom lens, to compare with wide-angle side, the image planes amount of movement the during shooting at close range of telescope end is big, and the lens that move when focusing are compared telescope end with wide-angle side amount of movement also becomes big.The time use the situation of the 5th lens combination G5 in focusing, make it when shooting at close range towards the thing side shifting, therefore the group that can enlarge the 4th lens combination G4 and the 5th lens combination G5 more, guarantees amount of movement at interval during focusing that can be when shooting at close range.
Below, illustrate in greater detail function and effect about above-mentioned conditional.
Above-mentioned conditional (1) be about from the centre position of the 5th lens combination G5 to the conditional of the amount of movement of telescope end, by satisfying this formula, can seek the shortening of lens length overall.And, can reduce influence to shade.If be lower than the lower limit of conditional (1), then the amount of movement of the 5th lens combination G5 tails off, so the change of penetrating pupil (ejaculation pupil) distance is also few, and the influence of shade also tails off the difficulty but the shortening of lens length overall becomes.If surpass the upper limit; then the mobile quantitative change of the 5th lens combination G5 is big, therefore helps the shortening of lens length overall, but the change of ejaculation pupil distance becomes big; the influence of shade is become big, and the dust or the cut of the lens surface of the 5th lens combination G5 during attached to telescope end can influence picture quality easily.
Conditional (2) is about the conditional from the wide-angle side of the 5th lens combination G5 to the amount of movement in centre position, by satisfying this formula, can seek the shortening of lens length overall.And, the in-plant focusing of the focal length in the middle of can carrying out well.If be lower than the lower limit of conditional (2), then the amount of movement of the 5th lens combination G5 tails off, so the 4th lens combination G4 of the focal length in the middle of can guaranteeing and the interval of the 5th lens combination G5, the in-plant focusing of middle focal length becomes easily, the difficulty but the shortening of lens length overall becomes.If above the upper limit, then the mobile quantitative change of the 5th lens combination G5 is big, therefore help the shortening of lens length overall, but the 4th lens G4 of middle focal length and the interval of the 5th lens combination G5 become narrow and small, therefore the in-plant focusing of the focal length in the middle of becomes difficult.
Conditional (3) is the conditional of the synthetic focal length of the 4th lens combination G4 that changes about utilizing moving of the 5th lens G5 and the 5th lens combination G5, by satisfying this formula, can realize the doubly aberration correction in zone of the shortening of lens length overall and whole change.If be lower than the lower limit of conditional (3), the change of the 4th lens combination G4 during then based on the change of moving of the 5th lens G5 times and the synthetic focal length of the 5th lens combination G5 tails off, and helps at the whole change aberration correction in zone doubly, but is difficult to carry out the shortening of lens length overall.If surpass the upper limit, then the change based on the synthetic focal length of the 4th lens combination G4 when becoming times that moves of the 5th lens G5 and the 5th lens combination G5 becomes big, helps the shortening of lens length overall, but in the whole change aberration correction in the zone difficulty that becomes doubly.
Above-mentioned conditional (4) is the conditional about the synthetic focal length of the 4th lens combination G4 that changes according to moving of the 5th lens G5 and the 5th lens combination G5, can realize the shortening of lens length overall and the aberration correction of the focal length of centre by satisfying this formula.If be lower than the lower limit of conditional (4), the change of the 4th lens combination G4 during then based on the change of moving of the 5th lens G5 times and the synthetic focal length of the 5th lens combination G5 tails off, help aberration correction, difficulty but the shortening of lens length overall becomes from the focal length of centre to telescope end.If surpass the upper limit, the change of the 4th lens combination G4 during then based on the change of the 5th lens G5 times and the synthetic focal length of the 5th lens combination G5 becomes big, helps the shortening of lens length overall, the difficulty but the aberration correction from the focal length of centre to telescope end becomes.
Above-mentioned conditional (5), (6) are about the refractive index of lens L12, the L13 with positive refracting power of the back group of G1R of the 1st lens combination G1 and the conditional of Abbe number.If be lower than the lower limit of conditional (5), then have the curvature grow of lens L12, the L13 of positive refracting power, need be with the center thickness thickening, so the miniaturization difficulty that becomes.If surpass conditional (5), then amber cuts down (パ Star Star バ one Le) now and becomes big and the filed curvature increase.If be lower than the lower limit of conditional (6), then the axle of telescope end is gone up the chromatic aberation increase, if surpass the upper limit, then the multiplying power chromatic aberation of wide-angle side increases.
Above-mentioned conditional (7), (8) are about the conditional in the difference of the difference of the refractive index of lens L12, the L13 of the positive refracting power of the lens L11 of the negative refracting power of the preceding group of G1F of the 1st lens combination G1 and back group G1R and Abbe number.If be lower than the lower limit of conditional (7), then amber cuts down now and becomes big and the filed curvature increase.If surpass the upper limit of conditional (7), the curvature grow of lens L12, the L13 of then positive refracting power need be with the center thickness thickening, so the miniaturization difficulty that becomes.If be lower than conditional (8), then the axle of telescope end is gone up the chromatic aberation increase, if surpass the upper limit, then the multiplying power chromatic aberation of wide-angle side increases.
Above-mentioned conditional (9) is the conditional about the lens length overall, by satisfying this formula, can realize the shortening of lens length overall and at the whole change aberration correction in zone doubly.If be lower than the lower limit of conditional (9), then help the shortening of lens length overall, but need be, and be unfavorable at the whole change aberration correction in zone doubly with the refracting power grow of each group.If surpass the upper limit, then help in the doubly regional aberration correction of whole change, difficulty but the shortening Amiization of lens length overall becomes.
Above-mentioned conditional (10) is the conditional in the imaging multiplying power of telescope end about the 5th lens combination G5, by satisfying this formula, thus the aberration correction can realize the shortening of lens length overall and focusing the time.If surpass the lower limit of conditional (10), the aberration when then focusing tails off, and tail off but doubly act on based on the change of moving of the 5th lens combination G5, so the shorteningization of lens length overall becomes difficult.If surpass the upper limit, then help the shortening of lens length overall, but the aberration change during focusing becomes big.
Above-mentioned conditional (11), (12) are about the refractive index of the negative lens L51 of the 5th lens combination G5 and positive lens L52 and the conditional of Abbe number, by satisfying this conditional, thereby can proofread and correct well when becoming times and filed curvature change and multiplying power chromatic aberation during focusing change.
As described above, the zoom lens related according to present embodiment, in the zoom lens of 5 prescription formulas, seek the optimization of lens arrangement, especially when becoming doubly and focusing, the 1st lens combination G1 is made as fixing all the time, and the proper conditions formula, and make amount of movement and the motion track optimization of the 5th lens combination G5, so can seek the hypermutation multiple proportions and can suppress the lens length overall and miniaturization.And, when being made as the structure that helps miniaturization as bending optical system, especially about lens material, by the proper conditions formula and make the structural optimization of the 1st lens combination G1, so especially suppress telescope end chromatic aberation increase and keep hypermutation multiple proportions and good optical performance, and can seek miniaturization on the whole.And, according to the camera head that has carried the related zoom lens of present embodiment, can keep the good shooting performance of hypermutation multiple proportions, and can seek miniaturization as device integral body.
[embodiment]
Then, the concrete numerical value embodiment to the related zoom lens of present embodiment describes.A plurality of numerical value embodiment describe in following summary.
Fig. 5 (A), (B) and Fig. 6 represent the concrete lens data corresponding to the structure of the zoom lens shown in Fig. 1 (A), (B), (C).Especially represent the lens data that it is basic at Fig. 5 (A), represent other data at Fig. 5 (B) and Fig. 6.The hurdle of face number Si in the lens data shown in Fig. 5 (A) has been represented will lean on the face of inscape of thing side as the 1st and along with the number towards the i that encloses symbol as side increases successively (i=1～26) face most for embodiment 1 related zoom lens.Represent to make on the hurdle of radius of curvature R i corresponding to the symbol Ri that is enclosed at Fig. 1 (C) from the value (mm) of the radius-of-curvature of i face of thing side.Represent interval (mm) from the optical axis of i face Si of thing side and i+1 face Si+1 too for the hurdle of face interval D i.Represent on the Ndi hurdle from the value between i face Si of thing side and i+1 the face Si+1 the refractive index of d line (587.6nm).Represent from the value of j optical parameter of thing side on the vdj hurdle the Abbe number of d line.The value of also representing paraxial focal distance f (mm), field angle (2 ω) and F number (FNO.) at Fig. 5 (A) as various data for the total system of wide-angle side and telescope end.
In the related zoom lens of embodiment 1, the 2nd lens combination G2, the 4th lens combination G4 and the 5th lens combination G5 move on optical axis along with becoming doubly, thus these each to move the value of face interval D 8, D13, D16, D21, D24 of the front and back of group variable.Show the value of wide-angle side, centre and telescope end in the data of Fig. 5 (B) during as the change of these face interval D 8, D13, D16, D21, D24 times.
In the lens data of Fig. 5 (A), the mark of enclosing in the left side of face number [*] represents that this lens face is an aspherical shape.In the related zoom lens of implementation column 1, two sides S20, the S21 of the lens L43 in two sides S15, the S16 of the lens L31 in two sides S7, the S8 of the lens L13 in the 1st lens combination G1, the 3rd lens combination G3, the 4th lens combination G4 all become aspherical shape.In the basic lens data of Fig. 5 (A), represent near the numerical value of the radius-of-curvature the optical axis as these aspheric radius-of-curvature.
Fig. 6 represents the aspherical surface data at zoom lens that embodiment 1 is related.In as the numerical value shown in the aspherical surface data, mark " E " expression continues in thereafter numerical value for 10 being " power exponent " at the end, and expression 10 is taken advantage of for the represented numerical value of exponential function at the end and to be calculated the numerical value before in " E " in order to this.For example, if " 1.0E-02 ", then expression " 1.0 * 10
-2".
As the aspherical surface data of the related zoom lens of embodiment 1, record and narrate value by each coefficient An, K in the formula of the represented aspherical shape of following formula (A).Detailed it, Z represents the length (mm) that the vertical line of picture is drawn in the section (connecing the plane) (perpendicular to the plane of optical axis) on the mutually aspheric summit of point on the aspheric surface that is positioned at the position of leaving optical axis height h.
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 is the aspheric degree of depth (mm),
H be from the optical axis to the lens face distance (highly) (mm),
K is an eccentricity,
C is paraxial curvature=1/R,
(R is paraxial radius-of-curvature),
A
nIt is the n time asphericity coefficient.
The zoom lens that embodiment 1 is related are as asphericity coefficient A
nSuitably use A effectively
3～A
20Till number of times represent.
As the related zoom lens of above embodiment 1, will be illustrated in Fig. 7 (A), (B) and Fig. 8 as embodiment 2 with the corresponding concrete lens data of structure of the zoom lens shown in Fig. 2 (A), (B), (C).And, similarly will be illustrated in Fig. 9 (A), (B) and Figure 10 as embodiment 3 corresponding to the concrete lens data of the formation of the zoom lens shown in Fig. 3 (A), (B), (C).And, similarly will be illustrated in Figure 11 (A), (B) and Figure 12 as embodiment 4 corresponding to the concrete lens data of the structure of the zoom lens shown in Fig. 4 (A), (B), (C).
In addition, for the zoom lens arbitrarily of embodiment 2 to 4, the face same with the related zoom lens of embodiment 1 also becomes aspherical shape.
At Figure 13 each embodiment is summed up expression and the relevant value of above-mentioned each conditional.For each conditional, the value of each embodiment becomes in this numerical range as shown in Figure 13.
Figure 14 (A)～(D) represents spherical aberration, astigmatism, distortion (distortion aberration) and the multiplying power chromatic aberation of the wide-angle side of the zoom lens that embodiment 1 is related respectively.Figure 15 (A)～(D) is illustrated in each same aberration of zone line, each same aberration of Figure 16 (A)～(D) expression telescope end.Represent that at each aberration diagram with d line (587.6nm) be the aberration of reference wavelength.Also represent aberration at spherical aberration diagram and multiplying power colour figure at wavelength 460nm, wavelength 615nm.In astigmatism figure, solid line is represented sagitta of arc direction, and dotted line is represented the aberration of tangent direction.FNO. represent the F value, ω represents angle of half field-of view.
Similarly, will be illustrated in Figure 17 (A)～(D) (wide-angle side), Figure 18 (A)～(D) (zone line) and Figure 19 (A)～(D) (telescope end) at the various aberrations of the related zoom lens of embodiment 2.Similarly, will be illustrated in Figure 20～Figure 25 (A)～(D) to the various aberrations of embodiment 3 and 4 related zoom lens.
From above each numeric data and each aberration diagram as can be known, each embodiment is become times zone at each can proofread and correct various aberrations well, can realize seeking the hypermutation multiple proportions and the zoom lens of miniaturization on the whole.
In addition, the invention is not restricted to above-mentioned embodiment and each embodiment, can implement all distortion.For example, the radius-of-curvature of each lens composition, face at interval and the value of refractive index etc. be not limited in the value shown in above-mentioned each numerical value embodiment desirable other values.
Claims (11)
1. zoom lens is characterized in that,
Set successively from the thing side:
The 1st lens combination, it is becoming doubly and is fixing during focusing and have a positive refracting power;
The 2nd lens combination, it moves when becoming times and has a negative refracting power;
The 3rd lens combination, it is becoming doubly and is fixing during focusing and have a positive refracting power;
The 4th lens combination, it moves when becoming times and has a positive refracting power;
The 5th lens combination, it moves when becoming times and has a positive refracting power,
From wide-angle side when telescope end becomes times, above-mentioned the 5th lens combination, at first to the thing side shifting then halfway to being that the mode of the motion track of protruding convex arc shaped moves to depict towards the thing side as the side counter-rotating, and formula meets the following conditions:
1.4＜ΔTM/fw＜3.0……(1)
Herein,
Δ TM is from (fwft)
1/2The amount of movement of 5th lens combination of lens position during to the change of the lens position of telescope end times,
Fw is the focal length of the total system of wide-angle side,
Ft is the focal length of the total system of telescope end.
2. zoom lens as claimed in claim 1 is characterized in that,
Above-mentioned the 5th lens combination moves when becoming times as follows: under the state of object distance infinity in the position of telescope end than more approaching picture side in the position of wide-angle side.
3. zoom lens as claimed in claim 1 or 2 is characterized in that,
Formula further meets the following conditions:
0.8＜ΔMW/fw＜1.6……(2)
Herein,
Δ MW be from the lens position of wide-angle side at (fwft)
1/2The amount of movement of the 5th lens combination the during change of lens position times.
4. zoom lens as claimed in claim 1 or 2 is characterized in that,
Formula further meets the following conditions:
1.2＜f45t/f45w＜1.5……(3)
Herein,
F45w is the synthetic focal length of the 4th lens combination and the 5th lens combination of wide-angle side,
F45t is the synthetic focal length of the 4th lens combination and the 5th lens combination of telescope end.
5. zoom lens as claimed in claim 1 or 2 is characterized in that,
Formula further meets the following conditions:
1.3＜f45t/f45m＜1.6……(4)
Herein,
F45m is at (fwft)
1/2The 4th lens combination of lens position and the synthetic focal length of the 5th lens combination,
F45t is the synthetic focal length of the 4th lens combination and the 5th lens combination of telescope end.
6. zoom lens as claimed in claim 1 or 2 is characterized in that,
Above-mentioned the 1st lens combination from the thing side successively by constituting as lower member: preceding group, it has negative refracting power; Reflection part, it is with the light path bending; The back group, it has positive refracting power,
The above-mentioned back group of above-mentioned the 1st lens combination possesses: the 1st lens (L12) with positive refracting power; With the 2nd lens (L13) with positive refracting power, and formula meets the following conditions:
1.43＜(N12+N13)/2＜1.48……(5)
83＜(v12+v13)/2＜90……(6)
Wherein,
N12 is the refractive indexes of the 1st lens (L12) at the d line,
N13 is the refractive indexes of the 2nd lens (L13) at the d line,
V12 is the Abbe numbers of the 1st lens (L12) at the d line,
V13 is the Abbe numbers of the 2nd lens (L13) at the d line.
7. zoom lens as claimed in claim 1 or 2 is characterized in that,
Formula further meets the following conditions:
1.35＜∑d/(ft-fw)＜1.45……(9)
Herein,
∑ d be from by the summit, thing side of the lens of thing side length of lens along optical axis to imaging surface,
Fw is the focal length of the total system of wide-angle side,
Ft is the focal length of the total system of telescope end.
8. zoom lens as claimed in claim 1 or 2 is characterized in that,
Constitutes by moving above-mentioned the 5th lens combination and focus on, and formula meets the following conditions:
0.65＜β5t＜0.88……(10)
Herein,
β 5t is the imaging multiplying power in the 5th lens combination of telescope end of infinity object.
9. zoom lens as claimed in claim 1 or 2 is characterized in that,
Above-mentioned the 5th lens combination is by the 4th lens (L52) formation of the 3rd lens (L51) of negative refracting power and positive refracting power, and formula meets the following conditions:
N51＜N52……(11)
v51＜v52……(12)
Herein,
N51 is the refractive indexes of the 3rd lens (L51) at the d line,
N52 is the refractive indexes of the 4th lens (L52) at the d line,
V51 is the Abbe numbers of the 3rd lens (L51) at the d line,
V52 is the Abbe numbers of the 4th lens (L52) at the d line.
10. zoom lens as claimed in claim 1 or 2 is characterized in that,
Near the thing side of above-mentioned the 3rd lens combination, also be equipped with aperture diaphragm.
11. a camera head is characterized in that,
Possess in the claim 1 to 10 each described zoom lens and
Export imaging apparatus with the corresponding image pickup signal of optical image that forms by above-mentioned zoom lens.
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| JP2008129527 | 2008-05-16 | ||
| JP2008129527A JP5065150B2 (en) | 2008-05-16 | 2008-05-16 | Zoom lens and imaging device |
| JP2008-129527 | 2008-05-16 |
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| US20120154524A1 (en) * | 2009-10-13 | 2012-06-21 | Panasonic Corporation | Zoom Lens System, Imaging Device and Camera |
| JP5273172B2 (en) * | 2011-02-08 | 2013-08-28 | 株式会社ニコン | Zoom lens, optical device, and zoom lens manufacturing method |
| JP5730134B2 (en) * | 2011-06-06 | 2015-06-03 | キヤノン株式会社 | Zoom lens and imaging apparatus having the same |
| US8730587B2 (en) * | 2011-06-08 | 2014-05-20 | Olympus Corporation | Zoom lens and image pickup apparatus using the same |
| JP5787218B2 (en) * | 2011-07-22 | 2015-09-30 | 株式会社ニコン | Photographic lens and optical apparatus having the photographic lens |
| JP5825513B2 (en) * | 2011-07-22 | 2015-12-02 | 株式会社ニコン | Photographic lens and optical apparatus having the photographic lens |
| CN103033913A (en) * | 2011-10-06 | 2013-04-10 | 鸿富锦精密工业（深圳）有限公司 | Zoom lens and imaging device |
| JP6011168B2 (en) | 2012-09-03 | 2016-10-19 | 株式会社リコー | Projection zoom lens and projector apparatus |
| KR101994285B1 (en) * | 2013-04-04 | 2019-06-28 | 한화테크윈 주식회사 | Zoom lens system |
| WO2022252164A1 (en) * | 2021-06-02 | 2022-12-08 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Imaging lens assembly, camera module and imaging device |
| CN115561881A (en) * | 2022-08-29 | 2023-01-03 | 华为技术有限公司 | Camera module and electronic equipment |
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| JP3973844B2 (en) * | 2001-02-14 | 2007-09-12 | 株式会社リコー | Zoom lens and camera device |
| JP4234957B2 (en) * | 2001-10-30 | 2009-03-04 | 株式会社リコー | Zoom lens, imaging device, and portable information terminal system |
| JP3900282B2 (en) * | 2002-03-14 | 2007-04-04 | ソニー株式会社 | Imaging device and zoom lens |
| JP2005338143A (en) * | 2004-05-24 | 2005-12-08 | Konica Minolta Photo Imaging Inc | Imaging lens device |
| JP5082499B2 (en) * | 2007-02-27 | 2012-11-28 | 株式会社ニコン | Zoom lens and optical apparatus having the same |
| JP5040359B2 (en) * | 2007-02-27 | 2012-10-03 | 株式会社ニコン | Zoom lens and optical apparatus having the same |
| JP5040360B2 (en) * | 2007-02-27 | 2012-10-03 | 株式会社ニコン | Zoom lens and optical apparatus having the same |
| JP5040358B2 (en) * | 2007-02-27 | 2012-10-03 | 株式会社ニコン | Zoom lens and optical apparatus having the same |
| JP5092449B2 (en) * | 2007-02-27 | 2012-12-05 | 株式会社ニコン | Zoom lens and optical apparatus having the same |
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| JP3750672B2 (en) * | 2003-05-20 | 2006-03-01 | コニカミノルタフォトイメージング株式会社 | Imaging lens device |
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