WO2011102089A1 - ズームレンズ系、撮像装置及びカメラ - Google Patents
ズームレンズ系、撮像装置及びカメラ Download PDFInfo
- Publication number
- WO2011102089A1 WO2011102089A1 PCT/JP2011/000608 JP2011000608W WO2011102089A1 WO 2011102089 A1 WO2011102089 A1 WO 2011102089A1 JP 2011000608 W JP2011000608 W JP 2011000608W WO 2011102089 A1 WO2011102089 A1 WO 2011102089A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- lens group
- lens
- zoom lens
- zoom
- image
- Prior art date
Links
Images
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B17/00—Details of cameras or camera bodies; Accessories therefor
- G03B17/02—Bodies
- G03B17/04—Bodies collapsible, foldable or extensible, e.g. book type
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/18—Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B15/00—Optical objectives with means for varying the magnification
- G02B15/14—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective
- G02B15/144—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective having four groups only
- G02B15/1441—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective having four groups only the first group being positive
- G02B15/144113—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective having four groups only the first group being positive arranged +-++
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B15/00—Optical objectives with means for varying the magnification
- G02B15/14—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective
- G02B15/145—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective having five groups only
- G02B15/1451—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective having five groups only the first group being positive
- G02B15/145121—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective having five groups only the first group being positive arranged +-+-+
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B15/00—Optical objectives with means for varying the magnification
- G02B15/14—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective
- G02B15/145—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective having five groups only
- G02B15/1451—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective having five groups only the first group being positive
- G02B15/145129—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective having five groups only the first group being positive arranged +-+++
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B2205/00—Adjustment of optical system relative to image or object surface other than for focusing
- G03B2205/0007—Movement of one or more optical elements for control of motion blur
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B2205/00—Adjustment of optical system relative to image or object surface other than for focusing
- G03B2205/0046—Movement of one or more optical elements for zooming
Definitions
- the present invention relates to a zoom lens system, an imaging device, and a camera.
- the present invention not only has a high resolution but also a high zooming ratio, and not only has a blur correction function for optically correcting image blur due to camera shake, vibration, etc., but also is particularly thin when retracted.
- the present invention relates to an adjustable zoom lens system, an imaging device including the zoom lens system, and a thin and compact camera including the imaging device.
- a digital camera For cameras having an image sensor that performs photoelectric conversion (hereinafter simply referred to as a digital camera), such as a digital still camera or a digital video camera, in recent years, images with a high resolution and a high zooming ratio as well as camera shake, vibration, etc.
- a blur correction function for optically correcting blur and a reduction in thickness are required, and various zoom lens systems have been proposed.
- Japanese Patent Application Laid-Open No. 2007-122019 has, in order from the object side, a first lens group having a negative refracting power, a first lens group having a negative meniscus lens, a first positive lens, and a second positive lens. 2 lens groups, a third lens group having positive refracting power, and a fourth lens group having positive refracting power, and when zooming, all the lens groups are moved along the optical axis, and the first lens group and A high-magnification zoom lens that defines the relationship between the focal length of the second lens group, the refractive index of the negative meniscus lens, and the refractive index of the first positive lens is disclosed.
- the entire third lens group is provided with a blur correction function.
- Japanese Patent Laid-Open No. 2009-282439 discloses, in order from the object side to the image side, a first lens group having a positive refractive power, a second lens group having a negative refractive power, a third lens group having a positive refractive power, and a negative lens group.
- a zoom lens in which at least a first lens unit moves during zooming. In this zoom lens, a blur correction function is given to the third lens group.
- Japanese Patent Laid-Open No. 2003-295060 discloses a first lens group having a positive refractive power, a second lens group having a negative refractive power, a 3a lens group having a positive refractive power, and a negative refractive power in order from the object side.
- a zoom lens that defines the relationship between the optical axis of the position and the amount of displacement in the vertical direction is disclosed. In this zoom lens, a blur correction function is added to the third lens group.
- the object of the present invention not only has a high resolution but also a high zooming ratio, and not only has a blur correction function for optically correcting image blur due to camera shake, vibration, etc.
- the present invention A zoom lens system having a plurality of lens groups each composed of at least one lens element, From the object side to the image side, A first lens group having positive power; A second lens group having negative power; A third lens group having positive power; With a subsequent lens group, During zooming from the wide-angle end to the telephoto end during imaging, the first lens group, the second lens group, and the third lens group are moved along the optical axis to perform zooming, The third lens group in order from the object side to the image side, A third lens group that retracts along an axis different from that during imaging when retracted;
- the present invention relates to a zoom lens system comprising a third lens group that moves in a direction perpendicular to the optical axis in order to optically correct image blur.
- the present invention An imaging apparatus capable of outputting an optical image of an object as an electrical image signal, A zoom lens system that forms an optical image of the object; An image sensor that converts an optical image formed by the zoom lens system into an electrical image signal;
- the zoom lens system is Having a plurality of lens groups composed of at least one lens element; From the object side to the image side, A first lens group having positive power; A second lens group having negative power; A third lens group having positive power; With a subsequent lens group, During zooming from the wide-angle end to the telephoto end during imaging, the first lens group, the second lens group, and the third lens group are moved along the optical axis to perform zooming, The third lens group in order from the object side to the image side, A third lens group that retracts along an axis different from that during imaging when retracted;
- the present invention relates to an image pickup apparatus that is a zoom lens system including a third lens group that moves in a direction perpendicular to the optical
- the present invention A camera that converts an optical image of an object into an electrical image signal, and displays and stores the converted image signal;
- An image pickup apparatus including a zoom lens system that forms an optical image of an object, and an image sensor that converts an optical image formed by the zoom lens system into an electrical image signal;
- the zoom lens system is Having a plurality of lens groups composed of at least one lens element; From the object side to the image side, A first lens group having positive power; A second lens group having negative power; A third lens group having positive power; With a subsequent lens group, During zooming from the wide-angle end to the telephoto end during imaging, the first lens group, the second lens group, and the third lens group are moved along the optical axis to perform zooming, The third lens group in order from the object side to the image side, A third lens group that retracts along an axis different from that during imaging when retracted;
- the present invention relates to a camera, which is a zoom lens system, including a third lens group
- the present invention not only has a high resolution, but also a high zooming ratio, it has not only a blur correction function for optically correcting image blur due to camera shake, vibration, etc. It is possible to provide a zoom lens system that can be thinned, an imaging device including the zoom lens system, and a thin and compact camera including the imaging device.
- FIG. 1 is a lens arrangement diagram illustrating an infinitely focused state of the zoom lens system according to Embodiment 1 (Example 1).
- FIG. 2 is a longitudinal aberration diagram of the zoom lens system according to Example 1 when the zoom lens system is in focus at infinity.
- FIG. 3 is a lateral aberration diagram in a basic state where image blur correction is not performed and in an image blur correction state at the telephoto end of the zoom lens system according to Example 1.
- FIG. 4 is a lens arrangement diagram illustrating an infinitely focused state of the zoom lens system according to Embodiment 2 (Example 2).
- FIG. 5 is a longitudinal aberration diagram of the zoom lens system according to Example 2 when the zoom lens system is in focus at infinity.
- FIG. 5 is a longitudinal aberration diagram of the zoom lens system according to Example 2 when the zoom lens system is in focus at infinity.
- FIG. 6 is a lateral aberration diagram in a basic state where image blur correction is not performed and in an image blur correction state at the telephoto end of the zoom lens system according to Example 2.
- FIG. 7 is a lens arrangement diagram illustrating an infinitely focused state of the zoom lens system according to Embodiment 3 (Example 3).
- FIG. 8 is a longitudinal aberration diagram of the zoom lens system according to Example 3 when the zoom lens system is in focus at infinity.
- FIG. 9 is a lateral aberration diagram in a basic state where image blur correction is not performed and in an image blur correction state at the telephoto end of the zoom lens system according to Example 3.
- FIG. 10 is a lens layout diagram illustrating an infinitely focused state of the zoom lens system according to Embodiment 4 (Example 4).
- FIG. 11 is a longitudinal aberration diagram of the zoom lens system according to Example 4 when the zoom lens system is in focus at infinity.
- FIG. 12 is a lateral aberration diagram in a basic state where image blur correction is not performed and in an image blur correction state at the telephoto end of a zoom lens system according to Example 4.
- FIG. 13 is a lens arrangement diagram illustrating an infinitely focused state of the zoom lens system according to Embodiment 5 (Example 5).
- FIG. 14 is a longitudinal aberration diagram of the zoom lens system according to Example 5 when the zoom lens system is in focus at infinity.
- FIG. 15 is a lateral aberration diagram in a basic state where image blur correction is not performed and in an image blur correction state at the telephoto end of a zoom lens system according to Example 5.
- FIG. 12 is a lateral aberration diagram in a basic state where image blur correction is not performed and in an image blur correction state at the telephoto end of a zoom lens system according to Example 4.
- FIG. 12 is a lateral
- FIG. 16 is a lens arrangement diagram illustrating an infinitely focused state of the zoom lens system according to Embodiment 6 (Example 6).
- FIG. 17 is a longitudinal aberration diagram of the zoom lens system according to Example 6 at an infinite focus state.
- FIG. 18 is a lateral aberration diagram in a basic state where image blur correction is not performed and in an image blur correction state at the telephoto end of a zoom lens system according to Example 6.
- FIG. 19 is a lens arrangement diagram illustrating an infinitely focused state of the zoom lens system according to Embodiment 7 (Example 7).
- FIG. 20 is a longitudinal aberration diagram of the zoom lens system according to Example 7 at the infinite focus state.
- FIG. 21 is a lateral aberration diagram in a basic state where image blur correction is not performed and in an image blur correction state, at the telephoto end of a zoom lens system according to Example 7.
- FIG. 22 is a lens arrangement diagram illustrating an infinitely focused state of the zoom lens system according to Embodiment 8 (Example 8).
- FIG. 23 is a longitudinal aberration diagram of the zoom lens system according to Example 8 when the zoom lens system is in focus at infinity.
- FIG. 24 is a lateral aberration diagram in a basic state where image blur correction is not performed and in an image blur correction state at the telephoto end of a zoom lens system according to Example 8.
- FIG. 25 is a schematic configuration diagram of a digital still camera according to the ninth embodiment.
- 1, 4, 7, 10, 13, 16, 19, and 22 each represent a zoom lens system in an infinitely focused state.
- the lens configuration of T )) and (c) show the lens configuration at the telephoto end (longest focal length state: focal length f T ).
- straight or curved arrows provided between FIGS. (A) and (b) indicate the movement of each lens group from the wide-angle end to the telephoto end via the intermediate position.
- FIGS. 1, 4, 7, 10, 19 and 22 show a direction in which a later-described fourth lens group G4 moves during focusing from an infinite focus state to a close object focus state.
- Reference numerals 13 and 16 indicate directions in which a later-described fifth lens group G5 moves during focusing from the infinitely focused state to the close object focused state.
- a third lens group G3 having power and a fourth lens group G4 having positive power are provided.
- the distance between the lens groups that is, the distance between the first lens group G1 and the second lens group G2, the second lens group G2 and the third lens group G3, All the lens groups move in the direction along the optical axis so that both the distance between the third lens group G3 and the fourth lens group G4 change.
- the zoom lens system according to each embodiment can reduce the size of the entire lens system while maintaining high optical performance by arranging these lens groups in a desired power arrangement.
- the fourth lens group G4 has a negative power.
- the third lens group G3 includes the third lens group G3, the fourth lens group G4, and the fifth lens group G5.
- the fourth lens group G4 has positive power.
- the zoom lens system during zooming, the distance between the lens groups, that is, the distance between the first lens group G1 and the second lens group G2, the second lens group G2 and the third lens group G3, All the lens groups along the optical axis so that the distance between the third lens group G3 and the fourth lens group G4 and the distance between the fourth lens group G4 and the fifth lens group G5 are all changed. Move in each direction.
- the zoom lens system according to each embodiment can reduce the size of the entire lens system while maintaining high optical performance by arranging these lens groups in a desired power arrangement.
- an asterisk * attached to a specific surface indicates that the surface is aspherical.
- a symbol (+) and a symbol ( ⁇ ) attached to a symbol of each lens group correspond to a power symbol of each lens group.
- the straight line described on the rightmost side represents the position of the image plane S, and the object side of the image plane S (FIGS. 1, 4, 7, 10 and 22: image plane S and fourth lens group G4).
- 13, 16 and 19 between the image surface S and the most image side lens surface of the fifth lens group G 5), an optical low-pass filter, a face plate of the image sensor, etc.
- a parallel plate P equivalent to is provided.
- an aperture stop A is provided on the most object side of the third lens group G3, that is, between the second lens group G2 and the third lens group G3. Is provided.
- the aperture stop A moves on the optical axis integrally with the third lens group G3 during zooming from the wide-angle end to the telephoto end during imaging.
- the first lens group G1 is a negative meniscus first lens element L1 having a convex surface directed toward the object side in order from the object side to the image side.
- a positive meniscus second lens element L2 having a convex surface facing the object side
- a positive meniscus third lens element L3 having a convex surface facing the object side.
- the first lens element L1 and the second lens element L2 are cemented, and in the surface data in the corresponding numerical example described later, the adhesion between the first lens element L1 and the second lens element L2 Surface number 2 is given to the agent layer.
- the second lens group G2 includes, in order from the object side to the image side, a negative meniscus fourth lens element L4 with a convex surface facing the object side, and a convex surface facing the image side. And a negative meniscus fifth lens element L5 and a biconvex sixth lens element L6.
- the fourth lens element L4 has two aspheric surfaces
- the fifth lens element L5 has an aspheric object side surface.
- the third lens unit G3 includes, in order from the object side to the image side, a biconvex seventh lens element L7, a biconvex eighth lens element L8, It consists of a biconcave ninth lens element L9 and a plano-convex tenth lens element L10 with a convex surface facing the object side.
- the eighth lens element L8 and the ninth lens element L9 are cemented, and in the surface data in the corresponding numerical value example described later, the adhesion between the eighth lens element L8 and the ninth lens element L9.
- Surface number 17 is given to the agent layer.
- the seventh lens element L7 has two aspheric surfaces.
- the third lens group G3 includes a 3a lens group G3a and a 3b lens group G3b in order from the object side to the image side, as will be described in detail later.
- the 3a lens group G3a includes: In order from the object side to the image side, the lens unit includes a seventh lens element L7, an eighth lens element L8, and a ninth lens element L9.
- the third b lens group G3b includes only a tenth lens element L10.
- the fourth lens unit G4 comprises solely a positive meniscus eleventh lens element L11 with the convex surface facing the object side.
- the eleventh lens element L11 has two aspheric surfaces.
- a parallel plate P is provided on the object side of the image plane S (between the image plane S and the eleventh lens element L11).
- the zoom lens system according to Embodiment 1 during zooming from the wide-angle end to the telephoto end during imaging, the first lens group G1 and the third lens group G3 move to the object side, and the second lens group G2 Moves toward the image side with a convex locus on the image side, and the fourth lens group G4 draws a convex locus on the object side so that the position at the telephoto end is substantially the same as the position at the wide-angle end. Move. That is, during zooming, the distance between the first lens group G1 and the second lens group G2 increases, the distance between the second lens group G2 and the third lens group G3 decreases, and the third lens group G3 and the fourth lens. Each lens group moves along the optical axis so that the distance from the group G4 increases.
- the first lens unit G1 includes a negative meniscus first lens element L1 having a convex surface directed toward the object side in order from the object side to the image side. And a positive meniscus second lens element L2 having a convex surface facing the object side, and a positive meniscus third lens element L3 having a convex surface facing the object side.
- the first lens element L1 and the second lens element L2 are cemented, and in the surface data in the corresponding numerical example described later, the adhesion between the first lens element L1 and the second lens element L2 Surface number 2 is given to the agent layer.
- the second lens group G2 includes, in order from the object side to the image side, a negative meniscus fourth lens element L4 having a convex surface directed toward the object side, and a biconcave second lens element L4. It consists of five lens elements L5 and a biconvex sixth lens element L6. Among these, the fourth lens element L4 has two aspheric surfaces, and the fifth lens element L5 has an aspheric object side surface.
- the third lens unit G3 includes, in order from the object side to the image side, a biconvex seventh lens element L7, a biconvex eighth lens element L8, It consists of a biconcave ninth lens element L9 and a positive meniscus tenth lens element L10 with a convex surface facing the object side.
- the eighth lens element L8 and the ninth lens element L9 are cemented, and in the surface data in the corresponding numerical value example described later, the adhesion between the eighth lens element L8 and the ninth lens element L9.
- Surface number 17 is given to the agent layer.
- the seventh lens element L7 has two aspheric surfaces.
- the third lens group G3 includes a 3a lens group G3a and a 3b lens group G3b in order from the object side to the image side, as will be described in detail later.
- the 3a lens group G3a is In order from the object side to the image side, the lens unit includes a seventh lens element L7, an eighth lens element L8, and a ninth lens element L9.
- the third b lens group G3b includes only a tenth lens element L10.
- the fourth lens unit G4 comprises solely a positive meniscus eleventh lens element L11 with the convex surface facing the object side.
- the eleventh lens element L11 has two aspheric surfaces.
- a parallel plate P is provided on the object side of the image plane S (between the image plane S and the eleventh lens element L11).
- the zoom lens system according to Embodiment 2 during zooming from the wide-angle end to the telephoto end during imaging, the first lens group G1 and the third lens group G3 move to the object side, and the second lens group G2 Moves toward the image side with a convex locus on the image side, and the fourth lens group G4 draws a convex locus on the object side so that the position at the telephoto end is substantially the same as the position at the wide-angle end. Move. That is, during zooming, the distance between the first lens group G1 and the second lens group G2 increases, the distance between the second lens group G2 and the third lens group G3 decreases, and the third lens group G3 and the fourth lens. Each lens group moves along the optical axis so that the distance from the group G4 increases.
- the first lens group G1 is a negative meniscus first lens element L1 having a convex surface directed toward the object side in order from the object side to the image side.
- the first lens element L1 and the second lens element L2 are cemented, and in the surface data in the corresponding numerical value example described later, the surface of the adhesive layer between the first lens element L1 and the second lens element L2 is a surface. Number 2 is assigned.
- the second lens element L2 has an aspheric image side surface.
- the second lens unit G2 includes, in order from the object side to the image side, a negative meniscus third lens element L3 with a convex surface facing the object side, and a convex surface facing the image side. It consists of a negative meniscus fourth lens element L4 and a biconvex fifth lens element L5. Among these, the third lens element L3 has two aspheric surfaces, and the fourth lens element L4 has an aspheric object side surface.
- the third lens unit G3 includes, in order from the object side to the image side, a biconvex sixth lens element L6, a biconvex seventh lens element L7, It consists of a biconcave eighth lens element L8 and a biconvex ninth lens element L9.
- the seventh lens element L7 and the eighth lens element L8 are cemented, and in the surface data in the corresponding numerical example described later, the adhesion between the seventh lens element L7 and the eighth lens element L8.
- Surface number 15 is given to the agent layer.
- the sixth lens element L6 has two aspheric surfaces.
- the third lens group G3 includes a 3a lens group G3a and a 3b lens group G3b in order from the object side to the image side, as will be described in detail later.
- the 3a lens group G3a includes: In order from the object side to the image side, the lens unit includes a sixth lens element L6, a seventh lens element L7, and an eighth lens element L8.
- the third b lens group G3b includes only a ninth lens element L9.
- the fourth lens unit G4 comprises solely a positive meniscus tenth lens element L10 with the convex surface facing the object side.
- the tenth lens element L10 has two aspheric surfaces.
- a parallel plate P is provided on the object side of the image plane S (between the image plane S and the tenth lens element L10).
- the zoom lens system according to Embodiment 3 during zooming from the wide-angle end to the telephoto end during imaging, the first lens group G1 and the third lens group G3 move to the object side, and the second lens group G2 Moves toward the image side with a convex locus on the image side, and the fourth lens group G4 draws a convex locus on the object side so that the position at the telephoto end is substantially the same as the position at the wide-angle end. Move. That is, during zooming, the distance between the first lens group G1 and the second lens group G2 increases, the distance between the second lens group G2 and the third lens group G3 decreases, and the third lens group G3 and the fourth lens. Each lens group moves along the optical axis so that the distance from the group G4 increases.
- the first lens unit G1 includes, in order from the object side to the image side, a negative meniscus first lens element L1 having a convex surface directed toward the object side. And a positive meniscus second lens element L2 having a convex surface facing the object side, and a positive meniscus third lens element L3 having a convex surface facing the object side.
- the first lens element L1 and the second lens element L2 are cemented, and in the surface data in the corresponding numerical example described later, the adhesion between the first lens element L1 and the second lens element L2 Surface number 2 is given to the agent layer.
- the second lens group G2 includes, in order from the object side to the image side, a biconcave fourth lens element L4, a biconcave fifth lens element L5, and both Consists of a convex sixth lens element L6.
- the fourth lens element L4 has two aspheric surfaces
- the fifth lens element L5 has an aspheric object side surface.
- the third lens unit G3 includes, in order from the object side to the image side, a biconvex seventh lens element L7, a biconvex eighth lens element L8, It consists of a biconcave ninth lens element L9 and a positive meniscus tenth lens element L10 with a convex surface facing the object side.
- the eighth lens element L8 and the ninth lens element L9 are cemented, and in the surface data in the corresponding numerical value example described later, the adhesion between the eighth lens element L8 and the ninth lens element L9.
- Surface number 17 is given to the agent layer.
- the seventh lens element L7 has two aspheric surfaces.
- the third lens group G3 includes a 3a lens group G3a and a 3b lens group G3b in order from the object side to the image side, as will be described in detail later.
- the 3a lens group G3a includes: In order from the object side to the image side, the lens unit includes a seventh lens element L7, an eighth lens element L8, and a ninth lens element L9.
- the third b lens group G3b includes only a tenth lens element L10.
- the fourth lens unit G4 comprises solely a positive meniscus eleventh lens element L11 with the convex surface facing the object side.
- the eleventh lens element L11 has two aspheric surfaces.
- a parallel plate P is provided on the object side of the image plane S (between the image plane S and the eleventh lens element L11).
- the zoom lens system according to Embodiment 4 during zooming from the wide-angle end to the telephoto end during imaging, the first lens group G1 and the third lens group G3 move to the object side, and the second lens group G2 Moves toward the image side with a convex locus on the image side, and the fourth lens group G4 draws a convex locus on the object side so that the position at the telephoto end is substantially the same as the position at the wide-angle end. Move. That is, during zooming, the distance between the first lens group G1 and the second lens group G2 increases, the distance between the second lens group G2 and the third lens group G3 decreases, and the third lens group G3 and the fourth lens. Each lens group moves along the optical axis so that the distance from the group G4 increases.
- the first lens unit G1 includes, in order from the object side to the image side, a negative meniscus first lens element L1 having a convex surface directed toward the object side. And a positive meniscus second lens element L2 having a convex surface facing the object side, and a positive meniscus third lens element L3 having a convex surface facing the object side.
- the first lens element L1 and the second lens element L2 are cemented, and in the surface data in the corresponding numerical example described later, the adhesion between the first lens element L1 and the second lens element L2 Surface number 2 is given to the agent layer.
- the second lens unit G2 includes, in order from the object side to the image side, a negative meniscus fourth lens element L4 with a convex surface facing the object side, and a convex surface facing the image side. And a negative meniscus fifth lens element L5 and a biconvex sixth lens element L6.
- the fourth lens element L4 has two aspheric surfaces
- the fifth lens element L5 has an aspheric object side surface.
- the third lens unit G3 includes, in order from the object side to the image side, a biconvex seventh lens element L7, a biconvex eighth lens element L8, It consists of a biconcave ninth lens element L9 and a biconvex tenth lens element L10.
- the eighth lens element L8 and the ninth lens element L9 are cemented, and in the surface data in the corresponding numerical value example described later, the adhesion between the eighth lens element L8 and the ninth lens element L9.
- Surface number 17 is given to the agent layer.
- the seventh lens element L7 has two aspheric surfaces.
- the third lens group G3 includes a 3a lens group G3a and a 3b lens group G3b in order from the object side to the image side, as will be described in detail later.
- the 3a lens group G3a includes: In order from the object side to the image side, the lens unit includes a seventh lens element L7, an eighth lens element L8, and a ninth lens element L9.
- the third b lens group G3b includes only a tenth lens element L10.
- the fourth lens unit G4 comprises solely a bi-concave eleventh lens element L11.
- the eleventh lens element L11 has an aspheric image side surface.
- the fifth lens unit G5 comprises solely a positive meniscus twelfth lens element L12 with the convex surface facing the object side.
- the twelfth lens element L12 has two aspheric surfaces.
- a parallel plate P is provided on the object side of the image plane S (between the image plane S and the twelfth lens element L12).
- the zoom lens system according to Embodiment 5 during zooming from the wide-angle end to the telephoto end during imaging, the first lens group G1, the third lens group G3, and the fourth lens group G4 move toward the object side.
- the second lens group G2 moves toward the image side with a locus convex toward the image side
- the fifth lens group G5 is positioned on the object side so that the position at the telephoto end is substantially the same as the position at the wide-angle end.
- Move with a convex trajectory That is, during zooming, the distance between the first lens group G1 and the second lens group G2 increases, the distance between the second lens group G2 and the third lens group G3 decreases, and the fourth lens group G4 and the fifth lens.
- Each lens group moves along the optical axis so that the distance from the group G5 increases.
- the first lens unit G1 includes, in order from the object side to the image side, a negative meniscus first lens element L1 having a convex surface directed toward the object side. And a positive meniscus second lens element L2 having a convex surface facing the object side, and a positive meniscus third lens element L3 having a convex surface facing the object side.
- the first lens element L1 and the second lens element L2 are cemented, and in the surface data in the corresponding numerical example described later, the adhesion between the first lens element L1 and the second lens element L2 Surface number 2 is given to the agent layer.
- the second lens unit G2 includes, in order from the object side to the image side, a negative meniscus fourth lens element L4 with a convex surface directed toward the object side, and a biconcave second lens element L4. It consists of five lens elements L5 and a biconvex sixth lens element L6. Among these, the fourth lens element L4 has two aspheric surfaces, and the fifth lens element L5 has an aspheric object side surface.
- the third lens unit G3 includes, in order from the object side to the image side, a biconvex seventh lens element L7, a biconvex eighth lens element L8, It consists of a biconcave ninth lens element L9 and a positive meniscus tenth lens element L10 with a convex surface facing the object side.
- the eighth lens element L8 and the ninth lens element L9 are cemented, and in the surface data in the corresponding numerical value example described later, the adhesion between the eighth lens element L8 and the ninth lens element L9.
- Surface number 17 is given to the agent layer.
- the seventh lens element L7 has two aspheric surfaces.
- the third lens group G3 includes a 3a lens group G3a and a 3b lens group G3b in order from the object side to the image side, as will be described in detail later.
- the 3a lens group G3a is In order from the object side to the image side, the lens unit includes a seventh lens element L7, an eighth lens element L8, and a ninth lens element L9.
- the third b lens group G3b includes only a tenth lens element L10.
- the fourth lens unit G4 comprises solely a bi-convex eleventh lens element L11.
- the fifth lens unit G5 comprises solely a positive meniscus twelfth lens element L12 with the convex surface facing the object side.
- the twelfth lens element L12 has two aspheric surfaces.
- a parallel plate P is provided on the object side of the image plane S (between the image plane S and the twelfth lens element L12).
- the zoom lens system according to Embodiment 6 during zooming from the wide-angle end to the telephoto end during imaging, the first lens group G1, the third lens group G3, and the fourth lens group G4 move to the object side.
- the second lens group G2 moves toward the image side with a locus convex toward the image side
- the fifth lens group G5 is positioned on the object side so that the position at the telephoto end is substantially the same as the position at the wide-angle end.
- Move with a convex trajectory That is, during zooming, the distance between the first lens group G1 and the second lens group G2 increases, the distance between the second lens group G2 and the third lens group G3 decreases, and the fourth lens group G4 and the fifth lens.
- Each lens group moves along the optical axis so that the distance from the group G5 increases.
- the first lens unit G1 includes, in order from the object side to the image side, a negative meniscus first lens element L1 having a convex surface directed toward the object side. And a positive meniscus second lens element L2 having a convex surface facing the object side, and a positive meniscus third lens element L3 having a convex surface facing the object side.
- the first lens element L1 and the second lens element L2 are cemented, and in the surface data in the corresponding numerical example described later, the adhesion between the first lens element L1 and the second lens element L2 Surface number 2 is given to the agent layer.
- the second lens unit G2 includes, in order from the object side to the image side, a negative meniscus fourth lens element L4 with a convex surface facing the object side, and a convex surface facing the image side. And a negative meniscus fifth lens element L5 and a biconvex sixth lens element L6.
- the fourth lens element L4 has two aspheric surfaces
- the fifth lens element L5 has an aspheric object side surface.
- the third lens unit G3 includes, in order from the object side to the image side, a biconvex seventh lens element L7, a biconvex eighth lens element L8, It consists of a biconcave ninth lens element L9 and a positive meniscus tenth lens element L10 with a convex surface facing the object side.
- the eighth lens element L8 and the ninth lens element L9 are cemented, and in the surface data in the corresponding numerical value example described later, the adhesion between the eighth lens element L8 and the ninth lens element L9.
- Surface number 17 is given to the agent layer.
- the seventh lens element L7 has two aspheric surfaces.
- the third lens group G3 includes a 3a lens group G3a and a 3b lens group G3b in order from the object side to the image side, as will be described in detail later.
- the 3a lens group G3a includes: In order from the object side to the image side, the lens unit includes a seventh lens element L7, an eighth lens element L8, and a ninth lens element L9.
- the third b lens group G3b includes only a tenth lens element L10.
- the fourth lens unit G4 comprises solely a positive meniscus eleventh lens element L11 with the convex surface facing the object side.
- the eleventh lens element L11 has two aspheric surfaces.
- the fifth lens unit G5 comprises solely a bi-convex twelfth lens element L12.
- the twelfth lens element L12 has an aspheric object side surface.
- a parallel plate P is provided on the object side of the image plane S (between the image plane S and the twelfth lens element L12).
- the zoom lens system according to Embodiment 7 during zooming from the wide-angle end to the telephoto end during imaging, the first lens group G1 and the third lens group G3 move to the object side, and the second lens group G2 Moves toward the image side with a convex locus on the image side, and the fourth lens group G4 draws a convex locus on the object side so that the position at the telephoto end is substantially the same as the position at the wide-angle end.
- the fifth lens group G5 moves to the image side. That is, during zooming, the distance between the first lens group G1 and the second lens group G2 increases, the distance between the second lens group G2 and the third lens group G3 decreases, and the third lens group G3 and the fourth lens.
- Each lens group moves along the optical axis so that the distance from the group G4 increases.
- the first lens unit G1 includes, in order from the object side to the image side, a negative meniscus first lens element L1 with a convex surface directed toward the object side. And a positive meniscus second lens element L2 having a convex surface facing the object side, and a positive meniscus third lens element L3 having a convex surface facing the object side.
- the first lens element L1 and the second lens element L2 are cemented, and in the surface data in the corresponding numerical example described later, the adhesion between the first lens element L1 and the second lens element L2 Surface number 2 is given to the agent layer.
- the second lens unit G2 includes, in order from the object side to the image side, a negative meniscus fourth lens element L4 with a convex surface facing the object side, and a convex surface facing the image side. And a negative meniscus fifth lens element L5 and a biconvex sixth lens element L6.
- the fourth lens element L4 has two aspheric surfaces
- the fifth lens element L5 has an aspheric object side surface.
- the third lens unit G3 includes, in order from the object side to the image side, a biconvex seventh lens element L7, a biconvex eighth lens element L8, It consists of a biconcave ninth lens element L9 and a biconcave tenth lens element L10.
- the eighth lens element L8 and the ninth lens element L9 are cemented, and in the surface data in the corresponding numerical value example described later, the adhesion between the eighth lens element L8 and the ninth lens element L9.
- Surface number 17 is given to the agent layer.
- the seventh lens element L7 has two aspheric surfaces
- the ninth lens element L9 has an aspheric image side surface.
- the third lens group G3 includes a 3a lens group G3a and a 3b lens group G3b in order from the object side to the image side, as will be described in detail later.
- the 3a lens group G3a is In order from the object side to the image side, the lens unit includes a seventh lens element L7, an eighth lens element L8, and a ninth lens element L9.
- the third b lens group G3b includes only a tenth lens element L10.
- the fourth lens unit G4 comprises solely a bi-convex eleventh lens element L11.
- the eleventh lens element L11 has two aspheric surfaces.
- a parallel plate P is provided on the object side of the image plane S (between the image plane S and the eleventh lens element L11).
- the zoom lens system according to Embodiment 8 during zooming from the wide-angle end to the telephoto end during imaging, the first lens group G1 and the third lens group G3 move to the object side, and the second lens group G2 Is moved toward the image side while drawing a locus convex toward the image side, and the fourth lens group G4 is convex toward the object side so that the position at the telephoto end is slightly closer to the object side than the position at the wide-angle end. Move along a trail. That is, during zooming, the distance between the first lens group G1 and the second lens group G2 increases, the distance between the second lens group G2 and the third lens group G3 decreases, and the third lens group G3 and the fourth lens. Each lens group moves along the optical axis so that the distance from the group G4 increases.
- the zoom lens systems according to Embodiments 1 to 4 and 8 have the fourth lens group G4 having a positive power as the subsequent lens group, and this zoom lens system is used for zooming from the wide-angle end to the telephoto end during imaging. Since the four lens group G4 moves along the optical axis together with the first lens group G1, the second lens group G2, and the third lens group G3, the entire lens system can be reduced in size while maintaining high optical performance. ing.
- the fourth lens group G4 moves toward the object side along the optical axis during focusing from the infinite focus state to the close object focus state. Therefore, high optical performance can be maintained even in the proximity object in-focus state. Further, the lens elements constituting the fourth lens group G4 have an aspherical surface and can favorably correct off-axis field curvature from the wide-angle end to the telephoto end.
- the fourth lens group G4 is composed of two or less lens elements, the entire lens system can be reduced in size and infinite. When focusing from a distant object to a close object, quick focusing is facilitated.
- the zoom lens systems according to Embodiments 5 to 7 include, as subsequent lens groups, a fourth lens group G4 having a positive power or a negative power and a fifth lens group G5 having a positive power.
- a fourth lens group G4 having a positive power or a negative power
- a fifth lens group G5 having a positive power.
- the fourth lens group G4 or the fifth lens group G5 moves along the optical axis when focusing from the infinitely focused state to the close object focused state. Since it moves to the side, it is possible to maintain high optical performance even in the proximity object in-focus state.
- the lens elements constituting the fourth lens group G4 or the fifth lens group G5 have an aspherical surface, and can favorably correct off-axis field curvature from the wide-angle end to the telephoto end.
- the entire lens system can be reduced in size.
- quick focusing is facilitated.
- the third lens unit G3 has at least two air spaces, and sequentially has a lens element having a positive power and a positive power from the object side to the image side. Since the lens element and the lens element having negative power located on the most image side are included, spherical aberration, coma aberration, and chromatic aberration can be favorably corrected.
- the third lens group G3 is retracted along the axis different from that at the time of imaging when the third lens group G3 is retracted in order from the object side to the image side;
- the third b lens group G3b moves in the direction perpendicular to the optical axis, and the third b lens group G3b corrects image point movement due to vibration of the entire system, that is, an image caused by camera shake, vibration, or the like.
- the blurring can be optically corrected.
- the lens elements constituting the third lens group G3b move in the direction perpendicular to the optical axis in this way, thereby suppressing the enlargement of the entire zoom lens system. It is possible to correct image blur while maintaining excellent imaging characteristics with small decentration coma and decentering astigmatism while having a compact and compact configuration.
- the third lens group G3 is composed of three lens units that are divided by two air intervals.
- the G31 unit is sequentially arranged from the object side to the image side.
- the third b lens group G3b may be equivalent to the G33 unit, or may be equivalent to a unit in which the G32 unit and the G33 unit are combined.
- the G33 unit may be composed of a single lens element, or may be composed of a plurality of lens elements.
- the third lens group G3b is composed of one lens element, when optically correcting image blur due to camera shake, vibration, or the like, It facilitates high-precision and quick correction.
- a zoom lens system such as the zoom lens systems according to Embodiments 1 to 8
- a plurality of preferable conditions are defined for the zoom lens system according to each embodiment, but a zoom lens system configuration that satisfies all of the plurality of conditions is most desirable.
- individual conditions it is possible to obtain a zoom lens system that exhibits the corresponding effects.
- the first lens has a plurality of lens groups each including at least one lens element, and has positive power in order from the object side to the image side.
- Group, a second lens group having negative power, a third lens group having positive power, and a subsequent lens group, and these first lenses are used during zooming from the wide-angle end to the telephoto end during imaging.
- the lens group, the second lens group, and the third lens group are moved along the optical axis to perform zooming, and the third lens group is in order from the object side to the image side, retracted, and an axis different from that for imaging.
- the zoom lens system (referred to as a basic configuration in the form of And (5) is preferably satisfied at the same time.
- L T total lens length at the telephoto end (distance from the most object side surface of the first lens group to the image plane)
- D total thickness on the optical axis of each lens group
- the condition (4) is a condition that defines the ratio between the total lens length at the telephoto end and the total thickness of each lens group on the optical axis. If the lower limit of the condition (4) is not reached, the total length of the lens becomes too short with respect to the total thickness, and it may be difficult to secure image quality and correct various aberrations such as chromatic aberration. In addition, it is conceivable to secure the length necessary for maintaining the performance of the entire lens length and increase the total thickness accordingly, but in that case it is difficult to provide a compact lens barrel, imaging device, and camera. There is a fear. Therefore, the upper limit is defined so that the total thickness does not become too large in the condition (5). Conversely, if the upper limit of the condition (4) is exceeded, the total thickness becomes too small with respect to the entire lens length, and it may be difficult to correct various aberrations such as spherical aberration and coma.
- the condition (5) is a condition related to the total thickness of each lens group on the optical axis. If the lower limit of the condition (5) is not reached, the thickness can be reduced, but it will fall below the minimum thickness required to ensure good optical performance during imaging, particularly spherical aberration, coma aberration, etc. It may be difficult to correct various aberrations. On the other hand, when the value exceeds the upper limit of the condition (5), the thickness is unnecessarily large in ensuring performance, and it may be difficult to provide a compact lens barrel, imaging device, and camera.
- the above effect can be further achieved by satisfying at least one of the following conditions (5) ′ and (5) ′′. 4.5 ⁇ D / Ir (5) ' D / Ir ⁇ 5.6 (5) ''
- a zoom lens system having a basic configuration like the zoom lens systems according to Embodiments 1 to 8 preferably satisfies the following conditions (6) and (7).
- the condition (6) is a condition that defines the relationship between the total lens length of the zoom lens system at the wide angle end and the maximum image height. If the upper limit of condition (6) is exceeded, the total length of the zoom lens system at the wide-angle end tends to be large, and it may be difficult to achieve a compact zoom lens system.
- the condition (7) is a condition that defines the relationship between the total lens length of the zoom lens system at the telephoto end and the maximum image height. If the upper limit of condition (7) is exceeded, the total length of the zoom lens system at the telephoto end tends to be large, and it may be difficult to achieve a compact zoom lens system.
- the zoom lens system having the basic configuration like the zoom lens systems according to Embodiments 1 to 8 preferably satisfies the following condition (8).
- M 12 /Ir ⁇ 4.7 (8) here, M 12 : relative movement amount between the first lens group and the second lens group during zooming from the wide-angle end to the telephoto end during imaging, Ir: Value represented by the following formula Ir f T ⁇ tan ( ⁇ T ), f T : focal length of the entire system at the telephoto end, ⁇ T : Half angle of view at the telephoto end (°) It is.
- the condition (8) is a condition that defines the relationship between the relative movement amount between the first lens group and the second lens group and the maximum image height. In order to ensure a high magnification, the relative movement amount between the first lens group and the second lens group tends to be large. However, if the upper limit of the condition (8) is exceeded, the relative movement amount becomes too large and compact. Providing a simple lens barrel, imaging device, and camera may be difficult.
- the zoom lens system having the basic configuration like the zoom lens systems according to Embodiments 1 to 8 preferably satisfies the following condition (9).
- the condition (9) is a condition that defines the relationship between the maximum image height and the multiplier between the relative movement amount of the first lens group and the second lens group and the focal length of the first lens group. If the upper limit of the condition (9) is exceeded, the amount of relative movement becomes too large, and it may be difficult to provide a compact lens barrel, imaging device, or camera. In addition, the focal length of the first lens group becomes large, and the amount of movement of the first lens group necessary to ensure high magnification becomes too large, making it difficult to provide a compact lens barrel, imaging device, and camera. There is a risk of becoming.
- the zoom lens system having the basic configuration like the zoom lens systems according to Embodiments 1 to 8 preferably satisfies the following condition (10). 0.50 ⁇
- the condition (10) is a condition that defines the ratio between the focal length of the first lens group and the focal length of the 3b lens group. If the lower limit of condition (10) is not reached, the focal length of the first lens group becomes too small, aberration fluctuations during zooming become large, making it difficult to correct aberrations, and the diameter of the first lens group is also large. Therefore, it may be difficult to provide a compact lens barrel, imaging device, and camera. Further, the error sensitivity with respect to the tilt of the first lens group becomes too high, and it may be difficult to assemble the optical system.
- the focal length of the 3b lens group becomes too small, and the aberration fluctuation at the time of blur correction becomes large, which may make it difficult to correct the aberration.
- the focal length of the first lens group becomes large, and the amount of movement of the first lens group necessary to ensure high magnification becomes too large, making it difficult to provide a compact lens barrel, imaging device, and camera. There is a risk of becoming.
- the above effect can be further achieved by further satisfying at least one of the following conditions (10) ′ and (10) ′′. 0.85 ⁇
- the zoom lens system having the basic configuration like the zoom lens systems according to Embodiments 1 to 8 preferably satisfies the following condition (11). 0.10 ⁇
- the condition (11) is a condition that defines the ratio between the focal length of the 3a lens group and the focal length of the 3b lens group. If the lower limit of the condition (11) is not reached, the focal length of the 3b lens group becomes too large, and there is a possibility that the blur cannot be corrected sufficiently. Further, the amount of movement of the third lens group in the direction perpendicular to the optical axis becomes too large, and it may be difficult to provide a compact lens barrel, imaging device, and camera. On the contrary, if the upper limit of the condition (11) is exceeded, the focal length of the 3b lens group becomes too small, and there is a possibility that aberration fluctuation at the time of blur correction becomes large and correction of the aberration becomes difficult.
- the above effect can be further achieved by satisfying at least one of the following conditions (11) ′ and (11) ′′. 0.30 ⁇
- the zoom lens system having the basic configuration like the zoom lens systems according to Embodiments 1 to 8 preferably satisfies the following conditions (12) and (13) in the entire system.
- the conditions (12) and (13) are conditions for defining the amount of movement in the vertical direction at the time of maximum blur correction of the 3b lens group moving in the direction perpendicular to the optical axis.
- the condition (12) is not satisfied or when the upper limit of the condition (13) is exceeded, the blur correction becomes excessive, and the optical performance may be greatly deteriorated.
- the lower limit of the condition (13) is not reached, there is a possibility that the shake cannot be corrected sufficiently.
- the above effect can be further achieved by further satisfying at least one of the following conditions (13) ′ and (13) ′′.
- Each lens group constituting the zoom lens system according to Embodiments 1 to 8 includes a refractive lens element that deflects incident light by refraction (that is, a type in which deflection is performed at an interface between media having different refractive indexes)
- a diffractive lens element that deflects incident light by diffraction a refractive / diffractive hybrid lens element that deflects incident light by a combination of diffractive action and refractive action, and a refractive index that deflects incident light according to the refractive index distribution in the medium
- Each lens group may be composed of a distributed lens element or the like.
- it is preferable to form a diffractive structure at the interface of media having different refractive indexes since the wavelength dependency of diffraction efficiency is improved.
- the object side of the image plane S (Embodiments 1 to 4 and 8: between the image plane S and the most image side lens surface of the fourth lens group G4, Embodiments 5 to 7: Image A configuration in which a parallel flat plate P equivalent to an optical low-pass filter, a face plate of an image sensor, or the like is disposed between the surface S and the most image side lens surface of the fifth lens group G5 is shown.
- a birefringent low-pass filter made of quartz or the like whose predetermined crystal axis direction is adjusted, or a phase-type low-pass filter that achieves the required optical cutoff frequency characteristics by the diffraction effect can be applied. It is.
- FIGS. 25A and 25B are schematic configuration diagrams of the digital still camera according to the ninth embodiment.
- FIG. 25A is a schematic configuration diagram during imaging, and FIG.
- the digital still camera includes an image pickup apparatus including a zoom lens system 1 and an image pickup device 2 that is a CCD, a liquid crystal monitor 3, and a housing 4.
- the zoom lens system 1 the zoom lens system according to Embodiment 1 is used.
- the zoom lens system 1 includes a first lens group G1, a second lens group G2, an aperture stop A, a third lens group G3 including a third a lens group G3a and a third b lens group G3b, and a first lens group G3. 4 lens group G4.
- the zoom lens system 1 is disposed on the front side, and the imaging element 2 is disposed on the rear side of the zoom lens system 1.
- a liquid crystal monitor 3 is disposed on the rear side of the housing 4, and an optical image of the subject by the zoom lens system 1 is formed on the image plane S.
- the lens barrel is composed of a main lens barrel 5, a movable lens barrel 6, and a cylindrical cam 7.
- the first lens group G1, the second lens group G2, the aperture stop A, the third lens group G3, and the fourth lens group G4 move to predetermined positions on the basis of the image sensor 2, Zooming from the wide-angle end to the telephoto end can be performed.
- This barrel is a so-called sliding barrel, and as shown in FIG. 5B, the third lens group G3a, which is a part of the third lens group G3, retracts from the optical axis when retracted. That is, when the lens barrel is retracted, the third-a lens group G3a is retracted along an axis different from that during imaging.
- the fourth lens group G4 can be moved in the optical axis direction by a focus adjustment motor.
- the zoom lens system according to Embodiment 1 for a digital still camera, it is possible to provide a small digital still camera that has a high ability to correct resolution and curvature of field and has a short overall lens length when not in use. it can.
- any of the zoom lens systems according to the second to eighth embodiments may be used instead of the zoom lens system according to the first embodiment.
- the optical system of the digital still camera shown in FIG. 25 can also be used for a digital video camera for moving images. In this case, not only a still image but also a moving image with high resolution can be taken.
- the zoom lens system according to the first to eighth embodiments is shown as the zoom lens system 1.
- these zoom lens systems need to use all zooming areas. There is no. That is, a range in which the optical performance is ensured may be cut out according to a desired zooming area, and used as a zoom lens system having a lower magnification than the zoom lens system described in the first to eighth embodiments.
- an image pickup apparatus including the zoom lens system according to Embodiments 1 to 8 described above and an image pickup device such as a CCD or a CMOS is used as a monitoring camera in a mobile phone device, a PDA (Personal Digital Assistance), or a monitoring system. It can also be applied to Web cameras, in-vehicle cameras, and the like.
- the unit of length in the table is “mm”, and the unit of angle of view is “°”.
- r is a radius of curvature
- d is a surface interval
- nd is a refractive index with respect to the d line
- vd is an Abbe number with respect to the d line.
- the surface marked with * is an aspherical surface
- the aspherical shape is defined by the following equation.
- ⁇ is a conic constant
- A4, A6, A8, A10, A12, and A14 are fourth-order, sixth-order, eighth-order, tenth-order, twelfth-order, and fourteenth-order aspheric coefficients, respectively.
- each longitudinal aberration diagram shows the aberration at the wide angle end, (b) shows the intermediate position, and (c) shows the aberration at the telephoto end.
- SA spherical aberration
- AST mm
- DIS distortion
- the vertical axis represents the F number (indicated by F in the figure)
- the solid line is the d line (d-line)
- the short broken line is the F line (F-line)
- the long broken line is the C line (C- line).
- the vertical axis represents the image height (indicated by H in the figure), the solid line represents the sagittal plane (indicated by s), and the broken line represents the meridional plane (indicated by m in the figure). is there.
- the vertical axis represents the image height (indicated by H in the figure).
- 3, 6, 9, 12, 15, 18, 21, and 24 are lateral aberration diagrams at the telephoto end of the zoom lens systems according to Embodiments 1 to 8, respectively.
- each lateral aberration diagram the upper three aberration diagrams show the basic state where image blur correction is not performed at the telephoto end, and the lower three aberration diagrams show the most image side lens element (third b lens group G3b of the third lens group G3). )
- the image blur correction state at the telephoto end which is moved by a predetermined amount in the direction perpendicular to the optical axis.
- the upper row shows the lateral aberration at the image point of 75% of the maximum image height
- the middle row shows the transverse aberration at the axial image point
- the lower row shows the transverse aberration at the image point of ⁇ 75% of the maximum image height.
- each lateral aberration diagram in the image blur correction state shows the upper row shows the lateral aberration at the image point of 75% of the maximum image height
- the middle row shows the lateral aberration at the axial image point
- the lower row shows the image point at the image point of ⁇ 75% of the maximum image height.
- the horizontal axis represents the distance from the principal ray on the pupil plane
- the solid line is the d line (d-line)
- the short broken line is the F line (F-line)
- the long broken line is the C line ( C-line) characteristics.
- the meridional plane is a plane including the optical axis of the first lens group G1 and the optical axis of the third lens group G3.
- the amount of movement in the direction perpendicular to the optical axis of the most image side lens element (third b lens group G3b) of the third lens group G3 in the image blur correction state at the telephoto end Is as follows.
- Example 1 0.470 mm
- Example 2 0.380 mm
- Example 3 0.420 mm
- Example 4 0.460 mm
- Example 5 0.320 mm
- Example 6 0.410 mm
- Example 7 0.410 mm
- the image decentering amount is perpendicular to the optical axis of the most image side lens element (third b lens group G3b) of the third lens group G3. This is equal to the amount of image eccentricity when the image is translated in each direction by the above values.
- Table 25 shows corresponding values for each condition in the zoom lens system of each numerical example.
- Y W is, Y W : Indicates the amount of movement of the 3b lens group in the direction perpendicular to the optical axis at the time of maximum blur correction at the focal length f W of the entire system at the wide angle end, and the zoom lens system is in the state at the wide angle end.
- the zoom lens system according to the present invention is applicable to digital input devices such as a digital camera, a mobile phone device, a PDA (Personal Digital Assistance), a surveillance camera in a surveillance system, a Web camera, an in-vehicle camera, etc. It is suitable for a photographing optical system that requires high image quality.
- digital input devices such as a digital camera, a mobile phone device, a PDA (Personal Digital Assistance), a surveillance camera in a surveillance system, a Web camera, an in-vehicle camera, etc. It is suitable for a photographing optical system that requires high image quality.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lenses (AREA)
- Adjustment Of Camera Lenses (AREA)
- Studio Devices (AREA)
Abstract
Description
少なくとも1枚のレンズ素子で構成されたレンズ群を複数有するズームレンズ系であって、
物体側から像側へと順に、
正のパワーを有する第1レンズ群と、
負のパワーを有する第2レンズ群と、
正のパワーを有する第3レンズ群と、
後続レンズ群とを備え、
撮像時の広角端から望遠端へのズーミングの際に、前記第1レンズ群と、前記第2レンズ群と、前記第3レンズ群とを光軸に沿って移動させて変倍を行い、
前記第3レンズ群が、物体側から像側へと順に、
沈胴時に、撮像時とは異なる軸に沿って退避する第3aレンズ群と、
像のぶれを光学的に補正するために光軸に対して垂直方向に移動する第3bレンズ群とで構成される
ことを特徴とする、ズームレンズ系
に関する。
物体の光学的な像を電気的な画像信号として出力可能な撮像装置であって、
物体の光学的な像を形成するズームレンズ系と、
該ズームレンズ系により形成された光学的な像を電気的な画像信号に変換する撮像素子とを備え、
前記ズームレンズ系が、
少なくとも1枚のレンズ素子で構成されたレンズ群を複数有し、
物体側から像側へと順に、
正のパワーを有する第1レンズ群と、
負のパワーを有する第2レンズ群と、
正のパワーを有する第3レンズ群と、
後続レンズ群とを備え、
撮像時の広角端から望遠端へのズーミングの際に、前記第1レンズ群と、前記第2レンズ群と、前記第3レンズ群とを光軸に沿って移動させて変倍を行い、
前記第3レンズ群が、物体側から像側へと順に、
沈胴時に、撮像時とは異なる軸に沿って退避する第3aレンズ群と、
像のぶれを光学的に補正するために光軸に対して垂直方向に移動する第3bレンズ群とで構成される
ことを特徴とするズームレンズ系である、撮像装置
に関する。
物体の光学的な像を電気的な画像信号に変換し、変換された画像信号の表示及び記憶の少なくとも一方を行うカメラであって、
物体の光学的な像を形成するズームレンズ系と、該ズームレンズ系により形成された光学的な像を電気的な画像信号に変換する撮像素子とを含む撮像装置を備え、
前記ズームレンズ系が、
少なくとも1枚のレンズ素子で構成されたレンズ群を複数有し、
物体側から像側へと順に、
正のパワーを有する第1レンズ群と、
負のパワーを有する第2レンズ群と、
正のパワーを有する第3レンズ群と、
後続レンズ群とを備え、
撮像時の広角端から望遠端へのズーミングの際に、前記第1レンズ群と、前記第2レンズ群と、前記第3レンズ群とを光軸に沿って移動させて変倍を行い、
前記第3レンズ群が、物体側から像側へと順に、
沈胴時に、撮像時とは異なる軸に沿って退避する第3aレンズ群と、
像のぶれを光学的に補正するために光軸に対して垂直方向に移動する第3bレンズ群とで構成される
ことを特徴とするズームレンズ系である、カメラ
に関する。
図1、4、7、10、13、16、19及び22は、各々実施の形態1~8に係るズームレンズ系のレンズ配置図である。
1.5<LT/D<3.0 ・・・(4)
3.0<D/Ir<6.5 ・・・(5)
ここで、
LT:望遠端におけるレンズ全長(第1レンズ群の最物体側面から像面までの距離)、
D:各レンズ群の光軸上での厚みの総和、
Ir:次式で表される値
Ir=fT×tan(ωT)、
fT:望遠端での全系の焦点距離、
ωT:望遠端での半画角(°)
である。
2.3<LT/D ・・・(4)’
4.5<D/Ir ・・・(5)’
D/Ir<5.6 ・・・(5)’’
LW/Ir<14.0 ・・・(6)
LT/Ir<17.0 ・・・(7)
ここで、
LW:広角端におけるレンズ全長(第1レンズ群の最物体側面から像面までの距離)、
LT:望遠端におけるレンズ全長(第1レンズ群の最物体側面から像面までの距離)、
Ir:次式で表される値
Ir=fT×tan(ωT)、
fT:望遠端での全系の焦点距離、
ωT:望遠端での半画角(°)
である。
LW/Ir<12.6 ・・・(6)’
LT/Ir<15.0 ・・・(7)’
M12/Ir<4.7 ・・・(8)
ここで、
M12:撮像時の広角端から望遠端へのズーミングの際の、第1レンズ群と第2レンズ群との相対移動量、
Ir:次式で表される値
Ir=fT×tan(ωT)、
fT:望遠端での全系の焦点距離、
ωT:望遠端での半画角(°)
である。
M12/Ir<4.2 ・・・(8)’
M12×f1/Ir2<44.0 ・・・(9)
ここで、
M12:撮像時の広角端から望遠端へのズーミングの際の、第1レンズ群と第2レンズ群との相対移動量、
f1:第1レンズ群の合成焦点距離、
Ir:次式で表される値
Ir=fT×tan(ωT)、
fT:望遠端での全系の焦点距離、
ωT:望遠端での半画角(°)
である。
M12×f1/Ir2<35.0 ・・・(9)’
0.50<|f1/f3b|<1.50 ・・・(10)
ここで、
f1:第1レンズ群の合成焦点距離、
f3b:第3bレンズ群の合成焦点距離
である。
0.85<|f1/f3b| ・・・(10)’
|f1/f3b|<1.30 ・・・(10)’’
0.10<|f3a/f3b|<0.65 ・・・(11)
ここで、
f3a:第3aレンズ群の合成焦点距離、
f3b:第3bレンズ群の合成焦点距離
である。
0.30<|f3a/f3b| ・・・(11)’
|f3a/f3b|<0.45 ・・・(11)’’
|YT|>|Y| ・・・(12)
1.5<(Y/YT)/(f/fT)<3.0 ・・・(13)
ここで、
f:全系の焦点距離、
fT:望遠端における全系の焦点距離、
Y:全系の焦点距離fにおける、第3bレンズ群の、最大ぶれ補正時の光軸に対して垂直方向への移動量、
YT:望遠端での全系の焦点距離fTにおける、第3bレンズ群の、最大ぶれ補正時の光軸に対して垂直方向への移動量
である。
2.0<(Y/YT)/(f/fT) ・・・(13)’
(Y/YT)/(f/fT)<2.5 ・・・(13)’’
図25は、実施の形態9に係るデジタルスチルカメラの概略構成図であり、(a)図は撮像時の概略構成図を示し、(b)図は沈胴時の概略構成図を示す。図25において、デジタルスチルカメラは、ズームレンズ系1とCCDである撮像素子2とを含む撮像装置と、液晶モニタ3と、筐体4とから構成される。ズームレンズ系1として、実施の形態1に係るズームレンズ系が用いられている。図25において、ズームレンズ系1は、第1レンズ群G1と、第2レンズ群G2と、開口絞りAと、第3aレンズ群G3a及び第3bレンズ群G3bからなる第3レンズ群G3と、第4レンズ群G4とから構成されている。筐体4は、前側にズームレンズ系1が配置され、ズームレンズ系1の後側には、撮像素子2が配置されている。筐体4の後側に液晶モニタ3が配置され、ズームレンズ系1による被写体の光学的な像が像面Sに形成される。
実施例1 0.470mm
実施例2 0.380mm
実施例3 0.420mm
実施例4 0.460mm
実施例5 0.320mm
実施例6 0.410mm
実施例7 0.410mm
実施例8 0.790mm
数値実施例1のズームレンズ系は、図1に示した実施の形態1に対応する。数値実施例1のズームレンズ系の面データを表1に、非球面データを表2に、各種データを表3に示す。
面番号 r d nd vd
物面 ∞
1 33.24880 0.65000 1.84666 23.8
2 20.08830 0.01000 1.56732 42.8
3 20.08830 2.29780 1.49700 81.6
4 78.00200 0.15000
5 24.76100 2.01630 1.80420 46.5
6 146.13000 可変
7* 2681.07510 0.30000 1.80470 41.0
8* 5.51570 3.57630
9* -13.78420 0.40000 1.77200 50.0
10 -199.21520 0.15000
11 20.34440 1.10180 1.94595 18.0
12 -103.17930 可変
13(絞り) ∞ 0.00000
14* 5.32510 3.28420 1.51610 63.3
15* -39.07590 0.15000
16 6.51830 2.08550 1.72916 54.7
17 -12.56420 0.01000 1.56732 42.8
18 -12.56420 0.30000 1.90366 31.3
19 4.42750 1.50000
20 17.28990 1.01540 1.49700 81.6
21 ∞ 可変
22* 10.43780 1.37780 1.58332 59.1
23* 28.50790 可変
24 ∞ 0.78000 1.51680 64.2
25 ∞ (BF)
像面 ∞
第7面
K= 0.00000E+00, A4=-3.87115E-04, A6= 4.95823E-05, A8=-1.87390E-06
A10= 3.09102E-08, A12=-2.01493E-10, A14= 0.00000E+00
第8面
K= 0.00000E+00, A4=-6.59891E-04, A6= 2.66680E-05, A8= 3.42222E-06
A10=-3.52026E-07, A12= 1.76133E-08, A14=-3.90070E-10
第9面
K= 0.00000E+00, A4=-1.96106E-05, A6= 9.49097E-06, A8=-1.66711E-06
A10= 1.66803E-07, A12=-5.77768E-09, A14= 6.98945E-11
第14面
K= 0.00000E+00, A4=-1.15096E-04, A6= 7.64324E-05, A8=-2.57243E-05
A10= 5.42107E-06, A12=-4.54685E-07, A14= 9.77076E-09
第15面
K= 0.00000E+00, A4= 1.09263E-03, A6= 5.67260E-05, A8=-5.22678E-07
A10= 7.03105E-08, A12= 2.13080E-07, A14=-2.40496E-08
第22面
K= 0.00000E+00, A4=-2.00498E-04, A6= 1.67768E-06, A8=-3.35467E-07
A10=-7.24149E-09, A12= 0.00000E+00, A14= 0.00000E+00
第23面
K= 0.00000E+00, A4=-1.93384E-04, A6=-1.80124E-06, A8=-5.13021E-07
A10= 0.00000E+00, A12= 0.00000E+00, A14= 0.00000E+00
ズーム比 9.39179
広角 中間 望遠
焦点距離 4.6448 14.2403 43.6234
Fナンバー 3.20802 4.42052 5.82619
画角 42.6052 15.2364 5.0161
像高 3.7000 3.9020 3.9020
レンズ全長 45.0306 47.5541 57.4055
BF 0.77215 0.76299 0.74065
d6 0.3158 8.7878 17.9643
d12 17.0819 5.4055 0.3000
d21 2.0448 4.7448 13.8007
d23 3.6609 6.6979 3.4448
入射瞳位置 7.3202 23.7602 67.6103
射出瞳位置 9.8225 -40.3722 -61.5483
前側主点位置 14.3488 33.0707 80.6825
後側主点位置 40.3858 33.3138 13.7821
単レンズデータ
レンズ 始面 焦点距離
1 1 -61.3315
2 3 53.7317
3 5 36.7986
4 7 -6.8688
5 9 -19.2005
6 11 18.0430
7 14 9.3151
8 16 6.1702
9 18 -3.5928
10 20 34.7887
11 22 27.4584
ズームレンズ群データ
群 始面 焦点距離 レンズ構成長 前側主点位置 後側主点位置
1 1 35.00002 5.12410 1.09630 3.03611
2 7 -7.43735 5.52810 -0.15952 0.38665
3 13 10.68581 8.34510 -2.91854 1.10192
4 22 27.45841 1.37780 -0.48892 0.04246
ズームレンズ群倍率
群 始面 広角 中間 望遠
1 1 0.00000 0.00000 0.00000
2 7 -0.29375 -0.44148 -0.96968
3 13 -0.58581 -1.39440 -1.64744
4 22 0.77119 0.66092 0.78021
数値実施例2のズームレンズ系は、図4に示した実施の形態2に対応する。数値実施例2のズームレンズ系の面データを表4に、非球面データを表5に、各種データを表6に示す。
面番号 r d nd vd
物面 ∞
1 26.16640 0.65000 1.84666 23.8
2 16.87260 0.01000 1.56732 42.8
3 16.87260 2.29370 1.49700 81.6
4 58.08220 0.15000
5 22.56010 1.68840 1.80420 46.5
6 113.60170 可変
7* 479.64580 0.30000 1.80470 41.0
8* 5.35330 3.55510
9* -13.06530 0.40000 1.77200 50.0
10 1020.12530 0.15000
11 19.55860 1.07810 1.94595 18.0
12 -89.63610 可変
13(絞り) ∞ 0.00000
14* 5.17740 2.23510 1.51845 70.0
15* -22.90790 0.73320
16 7.12790 2.09740 1.74400 44.7
17 -6.83580 0.01000 1.56732 42.8
18 -6.83580 0.30000 1.90366 31.3
19 4.35700 1.28850
20 13.81280 0.89600 1.49700 81.6
21 859.87630 可変
22* 17.51620 1.34500 1.77200 50.0
23* 96.78090 可変
24 ∞ 0.78000 1.51680 64.2
25 ∞ (BF)
像面 ∞
第7面
K= 0.00000E+00, A4=-3.89079E-04, A6= 4.98917E-05, A8=-1.89028E-06
A10= 3.10699E-08, A12=-1.99009E-10, A14= 0.00000E+00
第8面
K= 0.00000E+00, A4=-7.18555E-04, A6= 3.47356E-05, A8= 2.99389E-06
A10=-3.29477E-07, A12= 1.83371E-08, A14=-4.67338E-10
第9面
K= 0.00000E+00, A4=-3.01424E-05, A6= 1.09721E-05, A8=-1.80340E-06
A10= 1.74030E-07, A12=-6.08132E-09, A14= 6.70912E-11
第14面
K= 0.00000E+00, A4=-1.01933E-04, A6= 9.17188E-05, A8=-2.38544E-05
A10= 5.70399E-06, A12=-4.54685E-07, A14= 9.77076E-09
第15面
K= 0.00000E+00, A4= 1.03317E-03, A6= 7.86252E-05, A8=-2.01278E-06
A10= 8.02553E-07, A12= 2.13081E-07, A14=-2.40496E-08
第22面
K= 0.00000E+00, A4=-6.34089E-05, A6=-1.95567E-06, A8=-1.07258E-06
A10= 6.45858E-09, A12= 0.00000E+00, A14= 0.00000E+00
第23面
K= 0.00000E+00, A4= 1.99061E-05, A6=-1.83589E-05, A8=-4.73078E-07
A10= 0.00000E+00, A12= 0.00000E+00, A14= 0.00000E+00
ズーム比 9.39150
広角 中間 望遠
焦点距離 4.6449 14.2408 43.6229
Fナンバー 3.19247 4.33397 5.80463
画角 42.5914 15.1233 5.0150
像高 3.7000 3.9020 3.9020
レンズ全長 43.7701 45.3322 53.9940
BF 0.77806 0.76271 0.76177
d6 0.3063 7.9591 15.8810
d12 16.7125 5.2676 0.3000
d21 3.1000 4.6876 13.9219
d23 2.9127 6.6947 3.1688
入射瞳位置 7.1954 22.6435 61.4754
射出瞳位置 9.9523 -37.8815 -60.9063
前側主点位置 14.1921 31.6364 74.2402
後側主点位置 39.1251 31.0914 10.3710
単レンズデータ
レンズ 始面 焦点距離
1 1 -57.9664
2 3 46.9808
3 5 34.7174
4 7 -6.7295
5 9 -16.7071
6 11 17.0546
7 14 8.3729
8 16 5.0111
9 18 -2.9077
10 20 28.2363
11 22 27.5001
ズームレンズ群データ
群 始面 焦点距離 レンズ構成長 前側主点位置 後側主点位置
1 1 31.72186 4.79210 0.91444 2.70158
2 7 -6.95359 5.48320 -0.03537 0.56284
3 13 10.18296 7.56020 -3.00192 0.70435
4 22 27.50006 1.34500 -0.16650 0.42504
ズームレンズ群倍率
群 始面 広角 中間 望遠
1 1 0.00000 0.00000 0.00000
2 7 -0.31033 -0.47130 -1.01778
3 13 -0.57991 -1.40767 -1.67862
4 22 0.81364 0.67667 0.80492
数値実施例3のズームレンズ系は、図7に示した実施の形態3に対応する。数値実施例3のズームレンズ系の面データを表7に、非球面データを表8に、各種データを表9に示す。
面番号 r d nd vd
物面 ∞
1 18.18950 0.65000 1.84666 23.8
2 13.48870 0.01000 1.56732 42.8
3 13.48870 3.59480 1.58332 59.1
4* -390.98650 可変
5* 83.26520 0.30000 1.84973 40.6
6* 5.25780 3.48870
7* -13.26330 0.40000 1.68966 53.0
8 -221.99470 0.15000
9 23.18200 1.05020 1.94595 18.0
10 -72.81230 可変
11(絞り) ∞ 0.00000
12* 4.52630 2.62910 1.51845 70.0
13* -65.83540 0.15150
14 6.57030 2.01120 1.72916 54.7
15 -6.66480 0.01000 1.56732 42.8
16 -6.66480 0.30000 1.91082 35.2
17 4.30720 1.29980
18 15.44020 0.86440 1.49700 81.6
19 -1122.04350 可変
20* 11.59550 1.24960 1.58332 59.1
21* 33.00420 可変
22 ∞ 0.78000 1.51680 64.2
23 ∞ (BF)
像面 ∞
第4面
K= 0.00000E+00, A4= 8.13298E-06, A6=-6.20822E-09, A8=-9.01085E-11
A10= 3.92960E-13, A12= 0.00000E+00, A14= 0.00000E+00
第5面
K= 0.00000E+00, A4=-5.31248E-04, A6= 4.94090E-05, A8=-1.86957E-06
A10= 3.16100E-08, A12=-2.16209E-10, A14= 0.00000E+00
第6面
K= 0.00000E+00, A4=-7.58792E-04, A6= 2.71556E-05, A8= 3.41683E-06
A10=-4.11882E-07, A12= 2.09001E-08, A14=-4.78902E-10
第7面
K= 0.00000E+00, A4= 9.87471E-05, A6= 1.93881E-05, A8=-2.73583E-06
A10= 2.29004E-07, A12=-7.42552E-09, A14= 9.63360E-11
第12面
K= 0.00000E+00, A4= 1.94518E-04, A6= 1.15042E-04, A8=-2.37675E-05
A10= 5.97973E-06, A12=-4.62688E-07, A14= 9.77076E-09
第13面
K= 0.00000E+00, A4= 2.04364E-03, A6= 1.65386E-04, A8=-1.08751E-06
A10= 2.65193E-06, A12= 2.13080E-07, A14=-2.40496E-08
第20面
K= 0.00000E+00, A4=-2.24128E-04, A6= 4.26709E-05, A8=-2.71062E-06
A10= 3.07043E-08, A12= 0.00000E+00, A14= 0.00000E+00
第21面
K= 0.00000E+00, A4=-6.63149E-05, A6= 2.08287E-05, A8=-1.52882E-06
A10= 0.00000E+00, A12= 0.00000E+00, A14= 0.00000E+00
ズーム比 9.39159
広角 中間 望遠
焦点距離 4.6450 14.2411 43.6237
Fナンバー 2.40348 3.41386 4.57845
画角 42.5499 15.1048 5.0138
像高 3.7000 3.9020 3.9020
レンズ全長 42.8050 44.7925 53.9765
BF 0.77744 0.76167 0.74695
d4 0.3001 8.7237 17.4211
d10 17.0211 5.5104 0.3000
d19 2.5007 4.2219 13.0968
d21 3.2664 6.6355 3.4723
入射瞳位置 6.9221 24.0722 67.3514
射出瞳位置 9.9739 -32.8631 -45.0331
前側主点位置 13.9132 32.2818 69.4062
後側主点位置 38.1601 30.5514 10.3528
単レンズデータ
レンズ 始面 焦点距離
1 1 -65.8192
2 3 22.4263
3 5 -6.6164
4 7 -20.4697
5 9 18.6879
6 12 8.2744
7 14 4.8482
8 16 -2.8356
9 18 30.6530
10 20 30.0000
ズームレンズ群データ
群 始面 焦点距離 レンズ構成長 前側主点位置 後側主点位置
1 1 34.82157 4.25480 -0.10165 1.51673
2 5 -7.26682 5.38890 -0.18610 0.30059
3 11 10.17703 7.26600 -3.19460 0.57446
4 20 30.00002 1.24960 -0.41847 0.05852
ズームレンズ群倍率
群 始面 広角 中間 望遠
1 1 0.00000 0.00000 0.00000
2 5 -0.29417 -0.44639 -0.95847
3 11 -0.56096 -1.31524 -1.62870
4 20 0.80836 0.69658 0.80251
数値実施例4のズームレンズ系は、図10に示した実施の形態4に対応する。数値実施例4のズームレンズ系の面データを表10に、非球面データを表11に、各種データを表12に示す。
面番号 r d nd vd
物面 ∞
1 36.53130 0.65000 1.84666 23.8
2 20.60560 0.01000 1.56732 42.8
3 20.60560 3.69600 1.49700 81.6
4 495.95260 0.15000
5 23.57650 2.56190 1.80420 46.5
6 118.98210 可変
7* -31.36170 0.30000 1.80470 41.0
8* 5.89080 3.39080
9* -12.80210 0.40000 1.77200 50.0
10 325.88280 0.15000
11 19.13470 1.14430 1.94595 18.0
12 -70.46300 可変
13(絞り) ∞ 0.00000
14* 5.72660 3.42480 1.51845 70.0
15* -31.26490 1.37100
16 8.94370 2.05870 1.74400 44.7
17 -6.23260 0.01000 1.56732 42.8
18 -6.23260 0.30000 1.90366 31.3
19 5.56600 1.09310
20 11.24320 1.15270 1.49700 81.6
21 65.75400 可変
22* 14.74060 1.59400 1.77200 50.0
23* 93.11780 可変
24 ∞ 0.78000 1.51680 64.2
25 ∞ (BF)
像面 ∞
第7面
K= 0.00000E+00, A4=-8.58774E-05, A6= 4.93898E-05, A8=-1.93244E-06
A10= 3.10404E-08, A12=-1.96085E-10, A14= 0.00000E+00
第8面
K= 0.00000E+00, A4=-6.32340E-04, A6= 3.47251E-05, A8= 3.55755E-06
A10=-3.27972E-07, A12= 2.35443E-08, A14=-6.48041E-10
第9面
K= 0.00000E+00, A4=-1.52455E-04, A6=-1.19476E-06, A8=-6.60745E-07
A10= 1.65320E-07, A12=-7.45618E-09, A14= 1.09719E-10
第14面
K= 0.00000E+00, A4=-1.66766E-04, A6= 9.35994E-05, A8=-3.19597E-05
A10= 5.97000E-06, A12=-4.56658E-07, A14= 9.85421E-09
第15面
K= 0.00000E+00, A4= 7.92875E-04, A6= 4.44402E-05, A8=-3.65432E-06
A10= 2.43466E-07, A12= 2.14983E-07, A14=-2.39062E-08
第22面
K= 0.00000E+00, A4=-5.26996E-05, A6= 1.71711E-05, A8=-5.23359E-07
A10= 5.54034E-09, A12= 0.00000E+00, A14= 0.00000E+00
第23面
K= 0.00000E+00, A4=-2.22035E-05, A6= 1.08471E-05, A8=-2.27154E-07
A10= 0.00000E+00, A12= 0.00000E+00, A14= 0.00000E+00
ズーム比 13.13225
広角 中間 望遠
焦点距離 4.6449 16.7994 60.9984
Fナンバー 3.24252 4.33845 5.88945
画角 42.3856 12.8500 3.5930
像高 3.7000 3.9020 3.9020
レンズ全長 51.2734 55.7916 62.8055
BF 0.77607 0.74365 0.74673
d6 0.6275 10.4291 17.5772
d12 18.6962 6.6413 0.3000
d21 3.9936 7.0403 16.8915
d23 2.9427 6.7000 3.0528
入射瞳位置 9.0743 33.4049 88.1132
射出瞳位置 8.5390 -167.7650-6439.5354
前側主点位置 16.4985 48.5294 148.5338
後側主点位置 46.6284 38.9923 1.8071
単レンズデータ
レンズ 始面 焦点距離
1 1 -56.8912
2 3 43.1460
3 5 36.1290
4 7 -6.1408
5 9 -15.9480
6 11 16.0075
7 14 9.6404
8 16 5.2400
9 18 -3.2149
10 20 27.0980
11 22 22.4859
ズームレンズ群データ
群 始面 焦点距離 レンズ構成長 前側主点位置 後側主点位置
1 1 30.85080 7.06790 1.98462 4.61364
2 7 -6.44428 5.38510 -0.09673 0.49650
3 13 11.35332 9.41030 -3.26879 1.37313
4 22 22.48587 1.59400 -0.16769 0.53466
ズームレンズ群倍率
群 始面 広角 中間 望遠
1 1 0.00000 0.00000 0.00000
2 7 -0.30083 -0.55459 -1.44109
3 13 -0.65454 -1.63923 -1.80281
4 22 0.76464 0.59898 0.76105
数値実施例5のズームレンズ系は、図13に示した実施の形態5に対応する。数値実施例5のズームレンズ系の面データを表13に、非球面データを表14に、各種データを表15に示す。
面番号 r d nd vd
物面 ∞
1 34.09060 0.65000 1.84666 23.8
2 19.49590 0.01000 1.56732 42.8
3 19.49590 2.44880 1.49700 81.6
4 108.72980 0.15000
5 21.78740 1.93480 1.80420 46.5
6 107.26760 可変
7* 226.21220 0.30000 1.80470 41.0
8* 5.31320 3.75900
9* -11.38950 0.40000 1.77200 50.0
10 -86.57080 0.15000
11 26.72740 1.07590 1.94595 18.0
12 -43.48240 可変
13(絞り) ∞ 0.00000
14* 5.39480 2.26460 1.51845 70.0
15* -22.40410 0.55810
16 6.63210 2.11530 1.74400 44.7
17 -8.04460 0.01000 1.56732 42.8
18 -8.04460 0.30000 1.90366 31.3
19 4.37760 1.28410
20 17.49510 0.94390 1.49700 81.6
21 -38.81860 可変
22 -45.42900 0.30000 1.90715 35.4
23* 45.42900 可変
24* 13.42830 1.68010 1.77200 50.0
25* 164.09720 可変
26 ∞ 0.78000 1.51680 64.2
27 ∞ (BF)
像面 ∞
第7面
K= 0.00000E+00, A4=-4.00321E-04, A6= 4.98170E-05, A8=-1.89114E-06
A10= 3.10475E-08, A12=-1.99601E-10, A14= 0.00000E+00
第8面
K= 0.00000E+00, A4=-6.99056E-04, A6= 3.31724E-05, A8= 3.05555E-06
A10=-3.30343E-07, A12= 1.83075E-08, A14=-4.71629E-10
第9面
K= 0.00000E+00, A4=-5.01540E-06, A6= 1.33919E-05, A8=-1.84607E-06
A10= 1.72431E-07, A12=-6.04585E-09, A14= 7.25462E-11
第14面
K= 0.00000E+00, A4=-2.48823E-05, A6= 8.72076E-05, A8=-2.47595E-05
A10= 5.77557E-06, A12=-4.54685E-07, A14= 9.77076E-09
第15面
K= 0.00000E+00, A4= 1.00098E-03, A6= 7.10112E-05, A8=-3.23801E-06
A10= 8.13026E-07, A12= 2.13081E-07, A14=-2.40496E-08
第23面
K= 0.00000E+00, A4= 1.04453E-04, A6= 9.06780E-06, A8=-7.08667E-08
A10=-1.91277E-08, A12= 0.00000E+00, A14= 0.00000E+00
第24面
K= 0.00000E+00, A4=-5.17281E-05, A6=-1.07031E-06, A8=-7.28533E-07
A10= 2.51487E-09, A12= 0.00000E+00, A14= 0.00000E+00
第25面
K= 0.00000E+00, A4= 1.61721E-05, A6=-1.47876E-05, A8=-3.54720E-07
A10= 0.00000E+00, A12= 0.00000E+00, A14= 0.00000E+00
ズーム比 9.39186
広角 中間 望遠
焦点距離 4.6449 14.2407 43.6245
Fナンバー 3.20683 4.23507 5.83306
画角 42.6300 15.0486 5.0149
像高 3.7000 3.9020 3.9020
レンズ全長 45.6712 46.2980 54.2910
BF 0.76810 0.77191 0.74951
d6 0.3000 8.4080 15.7445
d12 17.5838 5.6751 0.4137
d21 0.9587 2.5673 4.5000
d23 2.1000 1.6426 8.2315
d25 2.8460 6.1185 3.5372
入射瞳位置 7.4845 24.2561 60.8988
射出瞳位置 9.9637 -33.7302 -81.9963
前側主点位置 14.4758 32.6190 81.5239
後側主点位置 41.0263 32.0573 10.6665
単レンズデータ
レンズ 始面 焦点距離
1 1 -54.9075
2 3 47.3663
3 5 33.6577
4 7 -6.7656
5 9 -17.0277
6 11 17.6301
7 14 8.6262
8 16 5.2061
9 18 -3.1016
10 20 24.4012
11 22 -25.0000
12 24 18.8528
ズームレンズ群データ
群 始面 焦点距離 レンズ構成長 前側主点位置 後側主点位置
1 1 31.55091 5.19360 1.27528 3.22895
2 7 -7.01843 5.68490 -0.07928 0.43656
3 13 9.61320 7.47600 -2.06466 1.08534
4 22 -25.00003 0.30000 0.07853 0.22147
5 24 18.85283 1.68010 -0.08409 0.65245
ズームレンズ群倍率
群 始面 広角 中間 望遠
1 1 0.00000 0.00000 0.00000
2 7 -0.31406 -0.49290 -1.01678
3 13 -0.47177 -0.98867 -1.18115
4 22 1.36765 1.67571 1.66652
5 24 0.72651 0.55273 0.69084
数値実施例6のズームレンズ系は、図16に示した実施の形態6に対応する。数値実施例6のズームレンズ系の面データを表16に、非球面データを表17に、各種データを表18に示す。
面番号 r d nd vd
物面 ∞
1 27.36560 0.65000 1.84666 23.8
2 17.50700 0.01000 1.56732 42.8
3 17.50700 2.31140 1.49700 81.6
4 66.55860 0.15000
5 22.99430 1.70060 1.80420 46.5
6 116.77250 可変
7* 423.06520 0.30000 1.80470 41.0
8* 5.38070 3.51300
9* -13.49680 0.40000 1.77200 50.0
10 165.15700 0.15000
11 17.77750 1.08830 1.94595 18.0
12 -142.52680 可変
13(絞り) ∞ 0.00000
14* 5.18600 2.17260 1.51845 70.0
15* -22.50980 0.70730
16 7.26580 2.07390 1.74400 44.7
17 -6.83130 0.01000 1.56732 42.8
18 -6.83130 0.30000 1.90366 31.3
19 4.41440 1.27610
20 13.96520 0.86220 1.49700 81.6
21 145.93880 可変
22 139.69450 0.30000 1.69878 47.1
23 -139.69450 可変
24* 19.69770 1.29890 1.77200 50.0
25* 126.90490 可変
26 ∞ 0.78000 1.51680 64.2
27 ∞ (BF)
像面 ∞
第7面
K= 0.00000E+00, A4=-3.88394E-04, A6= 4.99032E-05, A8=-1.89039E-06
A10= 3.10733E-08, A12=-1.98706E-10, A14= 0.00000E+00
第8面
K= 0.00000E+00, A4=-7.25095E-04, A6= 3.40011E-05, A8= 2.96023E-06
A10=-3.26939E-07, A12= 1.83618E-08, A14=-4.65100E-10
第9面
K= 0.00000E+00, A4=-6.24673E-05, A6= 1.03630E-05, A8=-1.79004E-06
A10= 1.74942E-07, A12=-6.10851E-09, A14= 6.48782E-11
第14面
K= 0.00000E+00, A4=-9.96181E-05, A6= 9.15266E-05, A8=-2.37780E-05
A10= 5.74371E-06, A12=-4.54685E-07, A14= 9.77076E-09
第15面
K= 0.00000E+00, A4= 1.01627E-03, A6= 7.72953E-05, A8=-1.86830E-06
A10= 8.22156E-07, A12= 2.13081E-07, A14=-2.40496E-08
第24面
K= 0.00000E+00, A4=-6.15277E-05, A6=-2.15138E-06, A8=-9.97641E-07
A10= 3.46774E-09, A12= 0.00000E+00, A14= 0.00000E+00
第25面
K= 0.00000E+00, A4= 1.92574E-05, A6=-1.75853E-05, A8=-4.83897E-07
A10= 0.00000E+00, A12= 0.00000E+00, A14= 0.00000E+00
ズーム比 9.39168
広角 中間 望遠
焦点距離 4.6449 14.2406 43.6233
Fナンバー 3.19972 4.26584 5.82401
画角 42.5729 15.0788 5.0149
像高 3.7000 3.9020 3.9020
レンズ全長 44.1001 45.9749 54.9776
BF 0.77494 0.75804 0.75192
d6 0.3000 8.2464 15.8375
d12 16.7452 5.3138 0.3000
d21 1.2038 2.5000 4.6538
d23 2.4727 2.5296 10.3801
d25 2.5492 6.5728 3.0000
入射瞳位置 7.1777 23.3643 60.5395
射出瞳位置 9.5663 -43.4130 -70.1216
前側主点位置 14.2767 33.0138 77.3123
後側主点位置 39.4553 31.7343 11.3543
単レンズデータ
レンズ 始面 焦点距離
1 1 -59.1863
2 3 47.0616
3 5 35.3182
4 7 -6.7749
5 9 -16.1464
6 11 16.7645
7 14 8.3536
8 16 5.0493
9 18 -2.9303
10 20 31.0053
11 22 100.0000
12 24 30.0446
ズームレンズ群データ
群 始面 焦点距離 レンズ構成長 前側主点位置 後側主点位置
1 1 31.79584 4.82200 0.97100 2.76922
2 7 -6.89612 5.45130 0.01312 0.65991
3 13 10.42079 7.40210 -3.18120 0.56003
4 22 100.00002 0.30000 0.08834 0.21166
5 24 30.04459 1.29890 -0.13397 0.43576
ズームレンズ群倍率
群 始面 広角 中間 望遠
1 1 0.00000 0.00000 0.00000
2 7 -0.30603 -0.47274 -0.98568
3 13 -0.61512 -1.56482 -2.01062
4 22 0.91999 0.85254 0.83480
5 24 0.84352 0.71016 0.82928
数値実施例7のズームレンズ系は、図19に示した実施の形態7に対応する。数値実施例7のズームレンズ系の面データを表19に、非球面データを表20に、各種データを表21に示す。
面番号 r d nd vd
物面 ∞
1 35.13230 0.65000 1.84666 23.8
2 20.03470 0.01000 1.56732 42.8
3 20.03470 2.45180 1.49700 81.6
4 123.44660 0.15000
5 20.37390 2.07020 1.80420 46.5
6 76.91630 可変
7* 165.08270 0.30000 1.80470 41.0
8* 5.33090 3.68440
9* -10.47890 0.40000 1.77200 50.0
10 -64.17700 0.15000
11 28.22460 1.05370 1.94595 18.0
12 -39.00710 可変
13(絞り) ∞ 0.00000
14* 5.16230 2.41130 1.51845 70.0
15* -24.91140 0.74930
16 7.15140 2.09050 1.74400 44.7
17 -6.58510 0.01000 1.56732 42.8
18 -6.58510 0.30000 1.90366 31.3
19 4.41910 1.27510
20 12.15630 0.88220 1.49700 81.6
21 64.76980 可変
22* 19.74400 1.20050 1.77200 50.0
23* 72.01610 可変
24* 48.62150 1.00000 1.48786 70.3
25 -48.62150 可変
26 ∞ 0.78000 1.51680 64.2
27 ∞ (BF)
像面 ∞
第7面
K= 0.00000E+00, A4=-4.08575E-04, A6= 4.96900E-05, A8=-1.89373E-06
A10= 3.10661E-08, A12=-1.98167E-10, A14= 0.00000E+00
第8面
K= 0.00000E+00, A4=-6.80426E-04, A6= 2.69976E-05, A8= 3.43955E-06
A10=-3.38451E-07, A12= 1.82942E-08, A14=-4.71760E-10
第9面
K= 0.00000E+00, A4= 3.73019E-06, A6= 1.28953E-05, A8=-1.73323E-06
A10= 1.69941E-07, A12=-6.09688E-09, A14= 7.13836E-11
第14面
K= 0.00000E+00, A4=-3.84337E-05, A6= 9.01694E-05, A8=-2.51217E-05
A10= 5.73805E-06, A12=-4.54685E-07, A14= 9.77076E-09
第15面
K= 0.00000E+00, A4= 1.14168E-03, A6= 7.41960E-05, A8=-2.50130E-06
A10= 8.24987E-07, A12= 2.13081E-07, A14=-2.40496E-08
第22面
K= 0.00000E+00, A4=-9.61949E-05, A6=-1.04964E-05, A8=-3.17950E-07
A10=-1.18593E-08, A12= 0.00000E+00, A14= 0.00000E+00
第23面
K= 0.00000E+00, A4=-1.31920E-04, A6=-1.02358E-05, A8=-4.94168E-07
A10= 0.00000E+00, A12= 0.00000E+00, A14= 0.00000E+00
第24面
K= 0.00000E+00, A4=-6.75514E-04, A6= 5.77171E-05, A8=-2.48485E-06
A10= 6.06957E-08, A12= 0.00000E+00, A14= 0.00000E+00
ズーム比 9.39173
広角 中間 望遠
焦点距離 4.6450 14.2412 43.6250
Fナンバー 3.20080 4.26732 5.81510
画角 42.7385 15.0377 5.0098
像高 3.7000 3.9020 3.9020
レンズ全長 44.7349 46.6754 54.7598
BF 0.77338 0.76409 0.74452
d6 0.3581 8.5800 15.8330
d12 16.5784 5.5630 0.3000
d21 2.5197 3.0714 13.3706
d23 1.8844 5.7064 2.3404
d25 1.0019 1.3715 0.5523
入射瞳位置 7.6861 25.1824 63.1594
射出瞳位置 9.3709 -62.0134 -202.3563
前側主点位置 14.8407 36.1929 97.4140
後側主点位置 40.0898 32.4342 11.1348
単レンズデータ
レンズ 始面 焦点距離
1 1 -56.1732
2 3 47.7455
3 5 33.9097
4 7 -6.8515
5 9 -16.2754
6 11 17.4443
7 14 8.4801
8 16 4.9278
9 18 -2.8890
10 20 29.9441
11 22 34.8862
12 24 50.0000
ズームレンズ群データ
群 始面 焦点距離 レンズ構成長 前側主点位置 後側主点位置
1 1 31.46718 5.33200 1.17189 3.20003
2 7 -6.97759 5.58810 -0.04159 0.48197
3 13 10.28493 7.71840 -3.23322 0.73114
4 22 34.88620 1.20050 -0.25336 0.27637
5 24 50.00000 1.00000 0.33719 0.66281
ズームレンズ群倍率
群 始面 広角 中間 望遠
1 1 0.00000 0.00000 0.00000
2 7 -0.31657 -0.50492 -1.06265
3 13 -0.59269 -1.34414 -1.63764
4 22 0.83036 0.70921 0.83241
5 24 0.94747 0.94026 0.95704
数値実施例8のズームレンズ系は、図22に示した実施の形態8に対応する。数値実施例8のズームレンズ系の面データを表22に、非球面データを表23に、各種データを表24に示す。
面番号 r d nd vd
物面 ∞
1 26.52200 0.65000 1.84666 23.8
2 17.32350 0.01000 1.56732 42.8
3 17.32350 2.46240 1.49700 81.6
4 61.07240 0.15000
5 21.02000 1.99660 1.80420 46.5
6 81.41130 可変
7* 308.54550 0.30000 1.80470 41.0
8* 5.28620 3.58240
9* -13.42040 0.40000 1.77200 50.0
10 -648.30400 0.15000
11 20.44370 1.04240 1.94595 18.0
12 -93.28300 可変
13(絞り) ∞ 0.00000
14* 5.16880 3.02350 1.51845 70.0
15* -19.58140 0.82300
16 7.38130 2.08110 1.74338 44.7
17 -5.52350 0.01000 1.56732 42.8
18 -5.52350 0.30000 1.90453 29.3
19* 5.41140 1.13900
20 -48.32330 0.90490 1.52625 52.4
21 58.13950 可変
22* 14.92940 2.13320 1.77200 50.0
23* -47.83980 可変
24 ∞ 0.78000 1.51680 64.2
25 ∞ (BF)
像面 ∞
第7面
K= 0.00000E+00, A4=-3.91513E-04, A6= 4.98664E-05, A8=-1.89044E-06
A10= 3.10698E-08, A12=-1.99335E-10, A14= 0.00000E+00
第8面
K= 0.00000E+00, A4=-7.40892E-04, A6= 3.46511E-05, A8= 3.10370E-06
A10=-3.29090E-07, A12= 1.82092E-08, A14=-4.80007E-10
第9面
K= 0.00000E+00, A4= 1.10557E-05, A6= ***59E-06, A8=-1.78891E-06
A10= 1.74520E-07, A12=-6.09446E-09, A14= 6.73871E-11
第14面
K= 0.00000E+00, A4=-1.09054E-04, A6= 7.98463E-05, A8=-2.54906E-05
A10= 5.45100E-06, A12=-4.54685E-07, A14= 9.77076E-09
第15面
K= 0.00000E+00, A4= 1.08055E-03, A6= 5.91226E-05, A8=-4.56934E-06
A10= 7.60109E-07, A12= 2.13081E-07, A14=-2.40496E-08
第19面
K= 0.00000E+00, A4= 5.19188E-04, A6= 5.37414E-05, A8=-6.41731E-07
A10=-5.83048E-07, A12= 0.00000E+00, A14= 0.00000E+00
第22面
K= 0.00000E+00, A4= 4.86875E-06, A6= 3.83391E-06, A8=-7.12995E-07
A10= 8.21904E-10, A12= 0.00000E+00, A14= 0.00000E+00
第23面
K= 0.00000E+00, A4= 1.72646E-04, A6=-1.23123E-05, A8=-2.90937E-07
A10= 0.00000E+00, A12= 0.00000E+00, A14= 0.00000E+00
ズーム比 9.39159
広角 中間 望遠
焦点距離 4.6450 14.2410 43.6241
Fナンバー 3.20252 4.26837 5.81038
画角 42.6783 15.2150 5.0176
像高 3.7000 3.9020 3.9020
レンズ全長 43.8768 46.7180 55.9985
BF 0.77921 0.74823 0.76884
d6 0.3693 8.4012 15.6921
d12 16.0481 5.2222 0.3000
d21 2.1709 4.8185 13.3777
d23 2.5708 5.5894 3.9214
入射瞳位置 7.7241 25.1267 64.4437
射出瞳位置 9.3660 -91.4581 86.1051
前側主点位置 14.8819 37.1682 130.3686
後側主点位置 39.2318 32.4771 12.3744
単レンズデータ
レンズ 始面 焦点距離
1 1 -60.9702
2 3 47.7660
3 5 34.7237
4 7 -6.6866
5 9 -17.7563
6 11 17.8063
7 14 8.2310
8 16 4.5638
9 18 -2.9831
10 20 -50.0000
11 22 14.9605
ズームレンズ群データ
群 始面 焦点距離 レンズ構成長 前側主点位置 後側主点位置
1 1 31.23752 5.26900 0.86635 2.85909
2 7 -6.97011 5.47480 -0.05130 0.52211
3 13 10.13775 8.28150 -5.09894 0.80696
4 22 14.96050 2.13320 0.29063 1.20190
ズームレンズ群倍率
群 始面 広角 中間 望遠
1 1 0.00000 0.00000 0.00000
2 7 -0.32360 -0.51601 -1.12119
3 13 -0.67631 -1.84156 -2.11162
4 22 0.67945 0.47975 0.58987
YW:広角端での全系の焦点距離fWにおける、第3bレンズ群の、最大ぶれ補正時の光軸に対して垂直方向への移動量
を示し、ズームレンズ系が広角端の状態のとき、すなわち条件(13)においてY=YW(f=fW)のときの対応値(YW/YT)/(fW/fT)を求めた。
G2 第2レンズ群
G3 第3レンズ群
G3a 第3aレンズ群
G3b 第3bレンズ群
G4 第4レンズ群
G5 第5レンズ群
L1 第1レンズ素子
L2 第2レンズ素子
L3 第3レンズ素子
L4 第4レンズ素子
L5 第5レンズ素子
L6 第6レンズ素子
L7 第7レンズ素子
L8 第8レンズ素子
L9 第9レンズ素子
L10 第10レンズ素子
L11 第11レンズ素子
L12 第12レンズ素子
A 開口絞り
P 平行平板
S 像面
1 ズームレンズ系
2 撮像素子
3 液晶モニタ
4 筐体
5 主鏡筒
6 移動鏡筒
7 円筒カム
Claims (21)
- 少なくとも1枚のレンズ素子で構成されたレンズ群を複数有するズームレンズ系であって、
物体側から像側へと順に、
正のパワーを有する第1レンズ群と、
負のパワーを有する第2レンズ群と、
正のパワーを有する第3レンズ群と、
後続レンズ群とを備え、
撮像時の広角端から望遠端へのズーミングの際に、前記第1レンズ群と、前記第2レンズ群と、前記第3レンズ群とを光軸に沿って移動させて変倍を行い、
前記第3レンズ群が、物体側から像側へと順に、
沈胴時に、撮像時とは異なる軸に沿って退避する第3aレンズ群と、
像のぶれを光学的に補正するために光軸に対して垂直方向に移動する第3bレンズ群とで構成される
ことを特徴とする、ズームレンズ系。 - 後続レンズ群が、正のパワーを有する第4レンズ群からなる、請求項1に記載のズームレンズ系。
- 第4レンズ群が、撮像時の広角端から望遠端へのズーミングの際に、光軸に沿って移動する、請求項2に記載のズームレンズ系。
- 第4レンズ群が、無限遠合焦状態から近接物体合焦状態へのフォーカシングの際に、光軸に沿って物体側へ移動する、請求項2に記載のズームレンズ系。
- 第4レンズ群が、2枚以下のレンズ素子からなる、請求項2に記載のズームレンズ系。
- 後続レンズ群が、第4レンズ群と、正のパワーを有する第5レンズ群とからなる、請求項1に記載のズームレンズ系。
- 第4レンズ群が、撮像時の広角端から望遠端へのズーミングの際に、光軸に沿って移動する、請求項6に記載のズームレンズ系。
- 第5レンズ群が、撮像時の広角端から望遠端へのズーミングの際に、光軸に沿って移動する、請求項6に記載のズームレンズ系。
- 第4レンズ群及び第5レンズ群のいずれかが、無限遠合焦状態から近接物体合焦状態へのフォーカシングの際に、光軸に沿って物体側へ移動する、請求項6に記載のズームレンズ系。
- 第4レンズ群及び第5レンズ群が、それぞれ2枚以下のレンズ素子からなる、請求項6に記載のズームレンズ系。
- 以下の条件(4)及び(5)を満足する、請求項1に記載のズームレンズ系:
1.5<LT/D<3.0 ・・・(4)
3.0<D/Ir<6.5 ・・・(5)
ここで、
LT:望遠端におけるレンズ全長(第1レンズ群の最物体側面から像面までの距離)、
D:各レンズ群の光軸上での厚みの総和、
Ir:次式で表される値
Ir=fT×tan(ωT)、
fT:望遠端での全系の焦点距離、
ωT:望遠端での半画角(°)
である。 - 以下の条件(6)及び(7)を満足する、請求項1に記載のズームレンズ系:
LW/Ir<14.0 ・・・(6)
LT/Ir<17.0 ・・・(7)
ここで、
LW:広角端におけるレンズ全長(第1レンズ群の最物体側面から像面までの距離)、
LT:望遠端におけるレンズ全長(第1レンズ群の最物体側面から像面までの距離)、
Ir:次式で表される値
Ir=fT×tan(ωT)、
fT:望遠端での全系の焦点距離、
ωT:望遠端での半画角(°)
である。 - 以下の条件(8)を満足する、請求項1に記載のズームレンズ系:
M12/Ir<4.7 ・・・(8)
ここで、
M12:撮像時の広角端から望遠端へのズーミングの際の、第1レンズ群と第2レンズ群との相対移動量、
Ir:次式で表される値
Ir=fT×tan(ωT)、
fT:望遠端での全系の焦点距離、
ωT:望遠端での半画角(°)
である。 - 以下の条件(9)を満足する、請求項1に記載のズームレンズ系:
M12×f1/Ir2<44.0 ・・・(9)
ここで、
M12:撮像時の広角端から望遠端へのズーミングの際の、第1レンズ群と第2レンズ群との相対移動量、
f1:第1レンズ群の合成焦点距離、
Ir:次式で表される値
Ir=fT×tan(ωT)、
fT:望遠端での全系の焦点距離、
ωT:望遠端での半画角(°)
である。 - 以下の条件(10)を満足する、請求項1に記載のズームレンズ系:
0.50<|f1/f3b|<1.50 ・・・(10)
ここで、
f1:第1レンズ群の合成焦点距離、
f3b:第3bレンズ群の合成焦点距離
である。 - 以下の条件(11)を満足する、請求項1に記載のズームレンズ系:
0.10<|f3a/f3b|<0.65 ・・・(11)
ここで、
f3a:第3aレンズ群の合成焦点距離、
f3b:第3bレンズ群の合成焦点距離
である。 - 第3bレンズ群が、1枚のレンズ素子からなる、請求項1に記載のズームレンズ系。
- 第3レンズ群が、少なくとも2つの空気間隔を有し、物体側から像側へと順に、
正のパワーを有するレンズ素子と、
正のパワーを有するレンズ素子と、
最像側に位置する負のパワーを有するレンズ素子とを含む、請求項1に記載のズームレンズ系。 - 以下の条件(12)及び(13)を全系において満足する、請求項1に記載のズームレンズ系:
|YT|>|Y| ・・・(12)
1.5<(Y/YT)/(f/fT)<3.0 ・・・(13)
ここで、
f:全系の焦点距離、
fT:望遠端における全系の焦点距離、
Y:全系の焦点距離fにおける、第3bレンズ群の、最大ぶれ補正時の光軸に対して垂直方向への移動量、
YT:望遠端での全系の焦点距離fTにおける、第3bレンズ群の、最大ぶれ補正時の光軸に対して垂直方向への移動量
である。 - 物体の光学的な像を電気的な画像信号として出力可能な撮像装置であって、
物体の光学的な像を形成するズームレンズ系と、
該ズームレンズ系により形成された光学的な像を電気的な画像信号に変換する撮像素子とを備え、
前記ズームレンズ系が、請求項1に記載のズームレンズ系である、撮像装置。 - 物体の光学的な像を電気的な画像信号に変換し、変換された画像信号の表示及び記憶の少なくとも一方を行うカメラであって、
物体の光学的な像を形成するズームレンズ系と、該ズームレンズ系により形成された光学的な像を電気的な画像信号に変換する撮像素子とを含む撮像装置を備え、
前記ズームレンズ系が、請求項1に記載のズームレンズ系である、カメラ。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2011800098080A CN102763019A (zh) | 2010-02-16 | 2011-02-03 | 变焦透镜***、摄像装置以及照相机 |
JP2012500489A JPWO2011102089A1 (ja) | 2010-02-16 | 2011-02-03 | ズームレンズ系、撮像装置及びカメラ |
US13/586,881 US20120307366A1 (en) | 2010-02-16 | 2012-08-16 | Zoom Lens System, Imaging Device and Camera |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2010031523 | 2010-02-16 | ||
JP2010-031523 | 2010-02-16 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/586,881 Continuation US20120307366A1 (en) | 2010-02-16 | 2012-08-16 | Zoom Lens System, Imaging Device and Camera |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2011102089A1 true WO2011102089A1 (ja) | 2011-08-25 |
Family
ID=44482697
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2011/000608 WO2011102089A1 (ja) | 2010-02-16 | 2011-02-03 | ズームレンズ系、撮像装置及びカメラ |
Country Status (4)
Country | Link |
---|---|
US (1) | US20120307366A1 (ja) |
JP (1) | JPWO2011102089A1 (ja) |
CN (1) | CN102763019A (ja) |
WO (1) | WO2011102089A1 (ja) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013101316A (ja) * | 2011-10-17 | 2013-05-23 | Panasonic Corp | ズームレンズ系、交換レンズ装置及びカメラシステム |
JP2013182018A (ja) * | 2012-02-29 | 2013-09-12 | Nikon Corp | 変倍光学系、光学装置、変倍光学系の製造方法 |
JP2014145804A (ja) * | 2013-01-28 | 2014-08-14 | Nikon Corp | 変倍光学系、光学装置、及び、変倍光学系の製造方法 |
US9625686B2 (en) | 2012-02-29 | 2017-04-18 | Nikon Corporation | Zooming optical system, optical apparatus and method for manufacturing zooming optical system |
JP2018018105A (ja) * | 2017-10-31 | 2018-02-01 | 株式会社ニコン | 変倍光学系、光学機器及び変倍光学系の製造方法 |
US10409043B2 (en) | 2013-06-28 | 2019-09-10 | Nikon Corporation | Variable magnification optical system, optical apparatus and method for manufacturing variable magnification optical system |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002006217A (ja) * | 2000-06-22 | 2002-01-09 | Canon Inc | 防振機能を有したズームレンズ及びそれを用いた光学機器 |
WO2006090660A1 (ja) * | 2005-02-22 | 2006-08-31 | Matsushita Electric Industrial Co., Ltd. | ズームレンズ系、撮像装置及びカメラ |
JP2008176231A (ja) * | 2007-01-22 | 2008-07-31 | Matsushita Electric Ind Co Ltd | ズームレンズ系、撮像装置及びカメラ |
JP2008304706A (ja) * | 2007-06-07 | 2008-12-18 | Konica Minolta Opto Inc | 防振機能を有するズームレンズ及び撮像装置 |
JP2009098458A (ja) * | 2007-10-17 | 2009-05-07 | Olympus Imaging Corp | ズームレンズおよびそれを用いた撮像装置 |
JP2009139701A (ja) * | 2007-12-07 | 2009-06-25 | Olympus Imaging Corp | ズームレンズ及びそれを用いた撮像装置 |
JP2009150970A (ja) * | 2007-12-19 | 2009-07-09 | Canon Inc | ズームレンズ及びそれを有する撮像装置 |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009098449A (ja) * | 2007-10-17 | 2009-05-07 | Olympus Imaging Corp | ズームレンズ及びそれを備えた撮像装置 |
-
2011
- 2011-02-03 WO PCT/JP2011/000608 patent/WO2011102089A1/ja active Application Filing
- 2011-02-03 JP JP2012500489A patent/JPWO2011102089A1/ja active Pending
- 2011-02-03 CN CN2011800098080A patent/CN102763019A/zh active Pending
-
2012
- 2012-08-16 US US13/586,881 patent/US20120307366A1/en not_active Abandoned
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002006217A (ja) * | 2000-06-22 | 2002-01-09 | Canon Inc | 防振機能を有したズームレンズ及びそれを用いた光学機器 |
WO2006090660A1 (ja) * | 2005-02-22 | 2006-08-31 | Matsushita Electric Industrial Co., Ltd. | ズームレンズ系、撮像装置及びカメラ |
JP2008176231A (ja) * | 2007-01-22 | 2008-07-31 | Matsushita Electric Ind Co Ltd | ズームレンズ系、撮像装置及びカメラ |
JP2008304706A (ja) * | 2007-06-07 | 2008-12-18 | Konica Minolta Opto Inc | 防振機能を有するズームレンズ及び撮像装置 |
JP2009098458A (ja) * | 2007-10-17 | 2009-05-07 | Olympus Imaging Corp | ズームレンズおよびそれを用いた撮像装置 |
JP2009139701A (ja) * | 2007-12-07 | 2009-06-25 | Olympus Imaging Corp | ズームレンズ及びそれを用いた撮像装置 |
JP2009150970A (ja) * | 2007-12-19 | 2009-07-09 | Canon Inc | ズームレンズ及びそれを有する撮像装置 |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013101316A (ja) * | 2011-10-17 | 2013-05-23 | Panasonic Corp | ズームレンズ系、交換レンズ装置及びカメラシステム |
JP2013182018A (ja) * | 2012-02-29 | 2013-09-12 | Nikon Corp | 変倍光学系、光学装置、変倍光学系の製造方法 |
US9625686B2 (en) | 2012-02-29 | 2017-04-18 | Nikon Corporation | Zooming optical system, optical apparatus and method for manufacturing zooming optical system |
US11125984B2 (en) | 2012-02-29 | 2021-09-21 | Nikon Corporation | Zooming optical system, optical apparatus and method for manufacturing zooming optical system |
US11782250B2 (en) | 2012-02-29 | 2023-10-10 | Nikon Corporation | Zooming optical system, optical apparatus and method for manufacturing zooming optical system |
JP2014145804A (ja) * | 2013-01-28 | 2014-08-14 | Nikon Corp | 変倍光学系、光学装置、及び、変倍光学系の製造方法 |
US10409043B2 (en) | 2013-06-28 | 2019-09-10 | Nikon Corporation | Variable magnification optical system, optical apparatus and method for manufacturing variable magnification optical system |
US11366297B2 (en) | 2013-06-28 | 2022-06-21 | Nikon Corporation | Variable magnification optical system, optical apparatus and method for manufacturing variable magnification optical system |
JP2018018105A (ja) * | 2017-10-31 | 2018-02-01 | 株式会社ニコン | 変倍光学系、光学機器及び変倍光学系の製造方法 |
Also Published As
Publication number | Publication date |
---|---|
US20120307366A1 (en) | 2012-12-06 |
CN102763019A (zh) | 2012-10-31 |
JPWO2011102089A1 (ja) | 2013-06-17 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP5543838B2 (ja) | ズームレンズ系、撮像装置及びカメラ | |
JP5676505B2 (ja) | ズームレンズ系、撮像装置及びカメラ | |
WO2011102090A1 (ja) | ズームレンズ系、撮像装置及びカメラ | |
WO2012101959A1 (ja) | ズームレンズ系、撮像装置及びカメラ | |
WO2009096156A1 (ja) | ズームレンズ系、撮像装置及びカメラ | |
JP5543837B2 (ja) | ズームレンズ系、撮像装置及びカメラ | |
WO2011045913A1 (ja) | ズームレンズ系、撮像装置及びカメラ | |
WO2011102089A1 (ja) | ズームレンズ系、撮像装置及びカメラ | |
WO2011102091A1 (ja) | ズームレンズ系、撮像装置及びカメラ | |
JP5162729B2 (ja) | ズームレンズ系、撮像装置及びカメラ | |
JP2011085653A (ja) | ズームレンズ系、撮像装置及びカメラ | |
JP2011085654A (ja) | ズームレンズ系、撮像装置及びカメラ | |
WO2011001663A1 (ja) | ズームレンズ系、撮像装置及びカメラ | |
JP2011064933A (ja) | ズームレンズ系、撮像装置及びカメラ | |
WO2013105190A1 (ja) | ズームレンズ系、撮像装置及びカメラ | |
JP2010160334A (ja) | ズームレンズ系、撮像装置及びカメラ | |
JP2010160329A (ja) | ズームレンズ系、撮像装置及びカメラ | |
WO2014013648A1 (ja) | ズームレンズ系、撮像装置及びカメラ | |
WO2010029738A1 (ja) | ズームレンズ系、撮像装置及びカメラ | |
JP5271090B2 (ja) | ズームレンズ系、撮像装置及びカメラ | |
JP5669105B2 (ja) | ズームレンズ系、撮像装置及びカメラ | |
JP5297284B2 (ja) | ズームレンズ系、撮像装置及びカメラ | |
JP5320080B2 (ja) | ズームレンズ系、撮像装置及びカメラ | |
JP5097446B2 (ja) | ズームレンズ系、撮像装置及びカメラ | |
JP5101168B2 (ja) | ズームレンズ系、撮像装置及びカメラ |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 201180009808.0 Country of ref document: CN |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 11744383 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2012500489 Country of ref document: JP |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 11744383 Country of ref document: EP Kind code of ref document: A1 |