WO2013099210A1 - ズームレンズおよび撮像装置 - Google Patents
ズームレンズおよび撮像装置 Download PDFInfo
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- WO2013099210A1 WO2013099210A1 PCT/JP2012/008256 JP2012008256W WO2013099210A1 WO 2013099210 A1 WO2013099210 A1 WO 2013099210A1 JP 2012008256 W JP2012008256 W JP 2012008256W WO 2013099210 A1 WO2013099210 A1 WO 2013099210A1
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- lens group
- lens
- refractive power
- zoom lens
- zoom
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- 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 +-++
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
- G02B13/009—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras having zoom function
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- 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
- G02B15/16—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 with interdependent non-linearly related movements between one lens or lens group, and another lens or lens group
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/64—Imaging systems using optical elements for stabilisation of the lateral and angular position of the image
- G02B27/646—Imaging systems using optical elements for stabilisation of the lateral and angular position of the image compensating for small deviations, e.g. due to vibration or shake
Definitions
- the present invention relates to a zoom lens used in an electronic camera such as a digital camera, a video camera, a broadcast camera, a cinema camera, and a surveillance camera, and an image pickup apparatus including the zoom lens.
- the zoom lenses described in Patent Documents 1 and 2 since the 4b lens group for focusing has a positive refractive power, the 4b lens group is brought closer to the object side when focusing from infinity to the closest distance. Will move. For this reason, a space for moving the 4b lens group is required on the object side of the 4b lens group, and as a result, a large space is required between the 4a lens group and the 4b lens group. The optical system could not be reduced in size sufficiently. Further, since the back focus at the wide-angle end tends to be short, when the zoom lens described in Patent Documents 1 and 2 is applied to a single-lens reflex camera, it becomes impossible to secure a space such as a mirror or a filter. Furthermore, in the zoom lenses described in Patent Documents 1 and 2, the zoom ratio is about 10, which is not a sufficiently high zoom ratio.
- the present invention has been made in view of the above circumstances, and an object of the present invention is to provide a high-performance zoom lens that is small and has a long back focus while having a high zoom ratio exceeding 12.
- the zoom lens according to the present invention includes 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 fourth lens having a positive refractive power in order from the object side.
- the fourth lens group includes, in order from the object side, a 4a lens group having a positive refractive power and a 4b lens group having a negative refractive power.
- the zoom lens according to the present invention is composed of the first lens group, the second lens group, the third lens group, and the fourth lens group, but has substantially no power other than the four lens groups.
- an optical element other than a lens such as a diaphragm or a cover glass, a lens flange, a lens barrel, an image sensor, a mechanism having a mechanism portion such as a camera shake correction mechanism, or the like may be included.
- the lens surface shape such as convex surface, concave surface, plane, biconcave, meniscus, biconvex, plano-convex and plano-concave, and the sign of the refractive power of the lens such as positive and negative include aspherical surfaces. Unless otherwise noted, the paraxial region is considered. In the present invention, the sign of the radius of curvature is positive when the convex shape faces the object side and negative when the convex shape faces the image side.
- the fourth lens group has an aspherical surface having a shape in which negative refractive power increases as the distance from the optical axis increases.
- the third lens group includes, in order from the object side, a third lens group having a positive refractive power and a third lens group having a negative refractive power, and the third lens group. It is preferable that camera shake correction is performed by moving the group in a direction perpendicular to the optical axis.
- the third lens group has at least one surface that is negatively refracted as the distance from the optical axis increases in the range from half the center beam radius of the surface at the telephoto end to the center beam radius. It is preferable to have an aspherical surface in which the force is weakened.
- the 3b lens group includes at least one surface that is negatively refracted as the distance from the optical axis increases in the range from half the center beam radius of the surface at the telephoto end to the center beam radius. It is preferable to have an aspherical surface in which the force is weakened.
- conditional expressions (1) and (2) are satisfied.
- it may have any one of the following conditional expressions (1) and (2), or may have a combination of both.
- An image pickup apparatus includes the zoom lens according to the present invention described above.
- the fourth lens group is composed of the 4a lens group having a positive refractive power and the 4b lens group having a negative refractive power in order from the object side, and when focusing from infinity to the closest distance, Since only the 4b lens group is moved to the image side, a large space is not required between the 4a lens group and the 4b lens group, thereby reducing the overall length of the fourth lens group.
- the optical system can be miniaturized.
- the back focus at the wide-angle end can be lengthened by approaching the 4b lens group having a negative refractive power to the 4a lens group, it is easy to secure a space for a mirror or a filter of a single-lens reflex camera. Accordingly, it is possible to obtain a high-performance zoom lens that is small and has a long back focus while having a high zoom ratio, and it is possible to make the sensitivity of image movement with respect to in-focus movement appropriate.
- the zoom lens of the present invention since the zoom lens of the present invention is provided, it can be configured with a small size and high performance, and a good image can be obtained using the image pickup device.
- FIG. 1 illustrates a first configuration example of a zoom lens according to an embodiment of the present invention, and is a lens cross-sectional view corresponding to Example 1.
- FIG. FIG. 2 is a lens cross-sectional view illustrating a second configuration example of a zoom lens and corresponding to Example 2;
- FIG. 7 is a lens cross-sectional view illustrating a third configuration example of a zoom lens and corresponding to Example 3;
- 4 is a lens cross-sectional view illustrating a fourth configuration example of a zoom lens and corresponding to Example 4;
- FIG. 10 is a lens cross-sectional view illustrating a fifth configuration example of the zoom lens and corresponding to Example 5.
- FIG. 2 is a lens cross-sectional view illustrating a second configuration example of a zoom lens and corresponding to Example 2
- FIG. 7 is a lens cross-sectional view illustrating a third configuration example of a zoom lens and corresponding to Example 3
- 4 is a lens cross-sectional view illustrating a fourth configuration example of
- FIG. 3A is a diagram illustrating various aberrations at the wide-angle end of the zoom lens according to Example 1; (A) illustrates spherical aberration, (B) illustrates astigmatism, and (C) illustrates distortion.
- FIG. 4 is various aberration diagrams in an intermediate region of the zoom lens according to Example 1, where (A) shows spherical aberration, (B) shows astigmatism, and (C) shows distortion.
- FIG. 4 is various aberration diagrams at the telephoto end of the zoom lens according to Example 1.
- FIG. 6 is a diagram illustrating various aberrations at the wide-angle end of the zoom lens according to Example 2, where (A) illustrates spherical aberration, (B) illustrates astigmatism, and (C) illustrates distortion.
- FIG. 6 is a diagram illustrating various aberrations in the intermediate range of the zoom lens according to Example 2, where (A) illustrates spherical aberration, (B) illustrates astigmatism, and (C) illustrates distortion.
- FIG. 6 is a diagram illustrating various aberrations at the telephoto end of the zoom lens according to Example 2, where (A) illustrates spherical aberration, (B) illustrates astigmatism, and (C) illustrates distortion.
- FIG. 4A is a diagram illustrating various aberrations at the wide-angle end of the zoom lens according to Example 3, where (A) illustrates spherical aberration, (B) illustrates astigmatism, and (C) illustrates distortion.
- FIG. 4A is a diagram illustrating various aberrations in an intermediate region of the zoom lens according to Example 3, where (A) illustrates spherical aberration, (B) illustrates astigmatism, and (C) illustrates distortion.
- FIG. 5A illustrates aberrations at the telephoto end of the zoom lens according to Example 3, where (A) illustrates spherical aberration, (B) illustrates astigmatism, and (C) illustrates distortion.
- FIG. 7A is a diagram illustrating various aberrations at the wide-angle end of the zoom lens according to Example 4; (A) illustrates spherical aberration, (B) illustrates astigmatism, and (C) illustrates distortion.
- FIG. 6A is a diagram illustrating various aberrations in the intermediate range of the zoom lens according to Example 4, where (A) illustrates spherical aberration, (B) illustrates astigmatism, and (C) illustrates distortion.
- FIG. 10 is a diagram illustrating various aberrations at the telephoto end of the zoom lens according to Example 4, where (A) illustrates spherical aberration, (B) illustrates astigmatism, and (C) illustrates distortion.
- FIG. 10 is a diagram illustrating various aberrations at the wide-angle end of the zoom lens according to Example 5, where (A) illustrates spherical aberration, (B) illustrates astigmatism, and (C) illustrates distortion.
- FIG. 6A is a diagram illustrating various aberrations in the intermediate range of the zoom lens according to Example 5, where (A) illustrates spherical aberration, (B) illustrates astigmatism, and (C) illustrates distortion.
- FIG. 10 is a diagram illustrating various aberrations at the telephoto end of the zoom lens according to Example 4, where (A) illustrates spherical aberration, (B) illustrates astigmatism, and (C) illustrates distortion.
- FIG. 10 is a diagram illustrating various aber
- FIG. 7A illustrates various aberrations at the telephoto end of the zoom lens according to Example 5, where (A) illustrates spherical aberration, (B) illustrates astigmatism, and (C) illustrates distortion.
- 1 is an external view illustrating a configuration example of a mirrorless single-lens camera as an imaging apparatus according to an embodiment of the present invention.
- 1 is an external view illustrating a configuration example of a mirrorless single-lens camera as an imaging apparatus according to an embodiment of the present invention.
- FIGS. 1A, 1B, and 1C show a first configuration example of a zoom lens according to an embodiment of the present invention.
- This configuration example corresponds to the lens configuration of Example 1 described later.
- 1A shows the arrangement of the optical system at the wide-angle end (shortest focal length state)
- FIG. 1B shows the arrangement of the optical system in the intermediate range (intermediate focal length state)
- FIG. 1C shows the telephoto end. This corresponds to the arrangement of the optical system in the (longest focal length state).
- second to fifth configuration examples corresponding to lens configurations of Examples 2 to 5 described later are shown in FIGS. 2 (A), (B), (C) to FIGS. 5 (A), (B).
- the reference symbol Ri designates the surface of the component closest to the object side as the first, and the image side (concatenation). It shows the radius of curvature of the i-th surface which is given a sign so as to increase sequentially toward the image side.
- a symbol Di indicates a surface interval on the optical axis Z between the i-th surface and the i + 1-th surface.
- symbol Di only the surface spacing (D5, D14, D24 etc.) of the part which changes with the change of imaging magnification is attached
- the zoom lens includes, in order from the object side along the optical axis Z, a first lens group G1 having a positive refractive power, a second lens group G2 having a negative refractive power, a third lens group G3 having a positive refractive power, and A fourth lens group G4 having a positive refractive power is provided.
- the optical aperture stop St is preferably disposed in the vicinity of the object side of the third lens group G3 between the second lens group G2 and the third lens group G3.
- the third lens group G3 includes, in order from the object side, a third a lens group G3a having a positive refractive power and a third b lens group G3b having a negative refractive power.
- the third lens group G3b is configured to be movable in a direction substantially perpendicular to the optical axis in order to correct displacement of the imaging position due to shaking.
- the fourth lens group G4 includes, in order from the object side, a fourth a lens group G4a having a positive refractive power and a fourth b lens group G4b having a negative refractive power. During focusing, the fourth lens group G4b moves along the optical axis to perform focusing.
- This zoom lens can be mounted on a photographing device such as a mirrorless single-lens camera.
- An imaging element 100 such as a CCD (Charge-Coupled Device) or a CMOS (Complementary-Metal-Oxide-Semiconductor) is disposed on an imaging surface (imaging surface) of a camera equipped with this zoom lens.
- the image sensor 100 outputs an image signal corresponding to an optical image formed by the zoom lens of the present embodiment.
- At least the zoom lens and the image sensor 100 constitute the image pickup apparatus in the present embodiment.
- Various optical members GC may be arranged between the fourth lens group G4, which is the final lens group, and the image sensor 100, depending on the configuration on the camera side where the lens is mounted.
- a flat optical member such as a cover glass for protecting the imaging surface or an infrared cut filter may be disposed.
- 1A, 1B, 1C to 5A, 5B, 5C also show the image sensor 100 and the optical member GC.
- This zoom lens is configured to perform zooming by moving at least the first lens group G1, the third lens group G3, and the fourth lens group G4 along the optical axis and changing the interval between the groups. Yes.
- the aperture stop St moves with the third lens group G3, for example. That is, as the magnification is changed from the wide-angle end to the intermediate range and further to the telephoto end, each lens group and the aperture stop St are changed from the state of FIG. 1A to the state of FIG. It moves to the state of C) so that the locus
- the distance between the first lens group G1 and the second lens group G2 increases, and the distance between the second lens group G2 and the third lens group G3 increases. It moves so that it may decrease and the space
- the first lens group G1 moves to the object side during zooming from the wide-angle end state to the telephoto end state. By moving the first lens group G1 in this way, zooming can be performed effectively, and good optical performance can be achieved over the entire range of zooming.
- zooming from the wide-angle end state to the telephoto end state it is desirable that the third lens group G3 and the fourth lens group G4 move to the object side, and the second lens group G2 move. By moving each lens group in this way, it is possible to effectively perform zooming in each lens group.
- the zoom lens according to the present embodiment eliminates the need for a large space between the 4a lens group G4a and the 4b lens group G4b, so that the overall length of the fourth lens group G4 can be shortened. Further downsizing of the optical system is possible. Further, since the back focus at the wide-angle end can be increased by the fourth b lens group G4b having negative refractive power approaching the fourth a lens group G4a, it is easy to secure a space for a mirror or a filter of a single lens reflex camera. . Thus, according to the present embodiment, it is possible to obtain a high-performance zoom lens that is small and has a long back focus while having a high zoom ratio exceeding 12. Furthermore, it is possible to make the sensitivity of the image movement relative to the in-focus movement appropriate.
- the positive refractive power of the third a lens group G3a is used. Since the effective diameter of the third lens group G3b can be reduced, the weight of the camera shake correction group is reduced, and the load on the image stabilization drive system can be reduced.
- the zoom lens according to the present embodiment satisfies the following conditional expression (1).
- conditional expression (1) focal length of the entire system at the telephoto end
- f4b focal length of the 4b lens group G4b
- conditional expression (1) If the upper limit of conditional expression (1) is exceeded, the sensitivity of the image movement to the in-focus movement becomes too high, and the amplitude movement amount of the 4b lens group G4b for finding the best focus position becomes too small, and as a result, the lens stops. The focus control becomes difficult.
- conditional expression (1-1) is satisfied. It is more preferable that the following conditional expression (1-2) is satisfied.
- the fourth lens group G4b preferably has at least one aspheric surface having a shape in which negative refractive power increases as the distance from the optical axis increases. This makes it possible to balance various aberrations during zooming and focusing.
- the zoom lens according to the present embodiment satisfies the following conditional expression (2).
- f3b Focal length of the 3b lens group G3b
- conditional expression (2) the size of the actuator for driving the 3b lens group G3b can be reduced, and the camera shake correction group for small vibrations can be easily controlled. be able to. If the lower limit of conditional expression (2) is not reached, the refractive power of the 3b lens group G3b becomes weak, and the amount of movement of the 3b lens group G3b necessary for image stabilization becomes too large. The size of the actuator will also increase.
- conditional expression (2) If the upper limit of conditional expression (2) is exceeded, the refractive power of the 3b lens group G3b will become strong, and the amount of movement of the 3b lens group G3b necessary at the time of image stabilization will become too small, and the camera shake correction group for small vibrations. It becomes difficult to control.
- the third lens group G3 has at least one aspherical surface having a shape in which the negative refractive power decreases as the distance from the optical axis increases in the range from half the center beam radius of the surface at the telephoto end to the center beam radius. Is preferred. Further, the third lens group G3b has at least one aspherical surface having a shape in which the negative refractive power decreases as the distance from the optical axis increases in the range from half the center beam radius of the surface at the telephoto end to the center beam radius. It is preferable to have. As a result, fluctuations in various aberrations during image stabilization and zooming can be suppressed.
- FIG. 6 is a diagram showing a configuration of the third b lens group G3b corresponding to the optical system arrangement of FIG.
- h is the center beam radius of the object-side surface R21 of the third to fourth lens L34 of the third lens group G3b.
- a range 60 from h / 2, which is half the central beam radius h on the object-side surface R21 of the 3-4 lens L34, to the central beam radius h is the central beam radius of the surface at the telephoto end.
- the range 60 shown in FIG. 6 has an aspherical shape in which the negative refractive power decreases as the distance from the optical axis Z increases.
- FIG. 22A and 22B show a mirrorless single-lens camera as an example of the imaging apparatus according to the present embodiment.
- FIG. 22A shows the appearance of the camera as seen from the front side
- FIG. 22B shows the appearance of the camera as seen from the back side.
- This camera includes a camera body 10, and a release button 32 and a power button 33 are provided on the upper surface side of the camera body 10.
- a display unit 36 and operation units 34 and 35 are provided on the back side of the camera body 10.
- the display unit 36 is for displaying a captured image.
- An imaging aperture through which light from an imaging target is incident is provided at the center of the front side of the camera body 10, and a mount 37 is provided at a position corresponding to the imaging aperture, and the interchangeable lens 20 is attached to the camera body 10 by the mount 37. It comes to be installed.
- the interchangeable lens 20 is a lens member housed in a lens barrel.
- an image sensor such as a CCD that outputs an image signal corresponding to the subject image formed by the interchangeable lens 20, and a signal processing circuit that processes the image signal output from the image sensor and generates an image , And a recording medium or the like for recording the generated image.
- a recording medium or the like for recording the generated image.
- a high-resolution imaging signal can be obtained by using the zoom lens according to the present embodiment as the interchangeable lens 20 in such a mirrorless single-lens camera. On the camera body 10 side, a high-resolution image can be generated based on the imaging signal.
- the zoom lens according to the present embodiment can be applied not only to a mirrorless single-lens camera but also to various electronic cameras such as a single-lens reflex camera, a video camera, a broadcast camera, a cinema camera, and a surveillance camera.
- FIGS. 1A, 1B, and 1C are diagrams illustrating a configuration of a zoom lens according to Embodiment 1 of the present invention.
- the first lens group G1 of the zoom lens according to Example 1 includes a negative meniscus 1-1 lens L11 having a concave surface directed toward the image side and a biconvex positive 1-2 lens in order from the object side.
- the 1-1 lens L11 and the 1-2 lens L12 are cemented to form a cemented lens.
- the second lens group G2 includes, in order from the object side, a negative meniscus 2-1 lens L21 having a concave surface directed toward the image side, a biconcave negative 2-2 lens L22, and a biconvex positive
- the lens includes a second and third lens L23, and a biconcave negative second and fourth lens L24.
- the 2-2 lens L22 is composed of a composite aspheric lens. That is, in the 2-2 lens L22, the object-side surface R8 is formed of a composite aspheric surface by laying resin on the object-side surface. R9 is a bonding surface between the glass and the resin of the 2-2 lens L22.
- the third-a lens group G3a includes, in order from the object side, a biconvex positive 3-1 lens L31, a biconvex positive 3-2 lens L32, and a biconcave negative 3-3 lens. L33.
- the 3-2 lens L32 and the 3-3 lens L33 are cemented to form a cemented lens.
- the third lens group G3b is composed of, in order from the object side, a biconcave negative 3-4 lens L34, and a positive meniscus third 3-5 lens L35 having a convex surface directed toward the object side.
- the object side surface R21 of the third to fourth lens L34 is an aspherical surface.
- the fourth-a lens group G4a includes, in order from the object side, a biconvex positive 4-1 lens L41, a negative meniscus 4-2 lens L42 having a concave surface facing the image side, and a biconvex positive lens No. 4-3 lens L43.
- the 4-2 lens L42 and the 4-3 lens L43 are cemented to form a cemented lens. Further, the object-side surface R25 and the image-side surface R26 of the fourth-first lens L41 are aspheric.
- the fourth lens group G4b is composed of, in order from the object side, a positive meniscus fourth lens L44 having a convex surface directed toward the image side, and a negative biconcave fourth 4-5 lens L45. Further, the object-side surface R32 of the fourth to fifth lens L45 is an aspherical surface.
- Example 1 the central luminous flux radius of the surface R21 at the telephoto end of the 3-4 lens L34 of the third lens group G3 is 7.952 mm.
- Tables 1 and 2 show specific lens data corresponding to the configuration of the zoom lens shown in FIGS. 1 (A), (B), and (C).
- Table 1 shows the basic lens data
- Table 2 shows other data.
- the surface of the component closest to the object side is the first, and the numbers are sequentially increased toward the image side.
- the value (mm) of the radius of curvature of the i-th surface from the object side is shown in correspondence with the symbol Ri given in FIG.
- the column of the surface interval Di indicates the interval (mm) on the optical axis between the i-th surface Si and the i + 1-th surface Si + 1 from the object side.
- the refractive index of the j-th (j 1, 2, 3,...) Optical element that gradually increases toward the image side, with the most object-side lens being the first lens, with respect to the d-line (wavelength 587.6 nm).
- the Abbe number of the j-th optical element with respect to the d-line is shown.
- Table 2 also shows values of paraxial focal length f (mm), F number (FNO.), And angle of view (2 ⁇ ) of the entire system in the infinitely focused state as various data.
- each lens group is shown as a first group, a second group, and so on. Further, since the 3b lens group performs camera shake correction and the 4b lens group performs focusing, OIS (Optical Image Stabilizer) and FOCUS characters are given respectively.
- OIS Optical Image Stabilizer
- FOCUS characters are given respectively.
- the zoom lens according to Example 1 With the zooming, the distance between the first lens group G1 and the second lens group G2, the distance between the second lens group G2 and the third lens group G3, and the third lens group G3.
- the fourth lens group G4 change, the surface distance D5 between the first lens group G1 and the second lens group G2, the surface distance D14 between the second lens group G2 and the third lens group G3, the third
- the values of the surface distance D24 between the lens group G3 and the fourth lens group G4 and the surface distance D33 between the fourth lens group G4 and the optical member GC are variable.
- Table 2 shows values in the infinite focus state at the wide-angle end (WIDE), the intermediate range (MID), and the telephoto end (TELE) as data at the time of zooming of the surface distances D5, D14, D24, and D33. .
- the symbol “*” attached to the left side of the surface number indicates that the lens surface has an aspherical shape.
- the basic lens data in Table 1 shows numerical values of paraxial curvature radii as the curvature radii of these aspheric surfaces.
- Table 3 shows aspherical data in the zoom lens according to Example 1.
- E indicates that the subsequent numerical value is a “power exponent” with a base of 10
- the numerical value represented by an exponential function with the base of 10 is Indicates that the value before “E” is multiplied.
- “1.0E-02” indicates “1.0 ⁇ 10 ⁇ 2 ”.
- Z is the length (mm) of a perpendicular line drawn from a point on the aspheric surface at a height Y from the optical axis to the tangential plane (plane perpendicular to the optical axis) of the apex of the aspheric surface.
- Z Depth of aspheric surface (mm)
- Y Distance from the optical axis to the lens surface (height) (mm)
- K aspheric coefficient representing quadratic surface
- An nth-order aspherical coefficient
- the aspherical surface of the zoom lens according to Example 1 is expressed based on the above-described aspherical expression (A), and the aspherical coefficient An is expressed by effectively using the orders from A3 to A10. Yes.
- FIGS. 3A, 3B, and 3C are embodiments of the present invention.
- 6 is a diagram illustrating a configuration of a zoom lens according to Example 3.
- FIG. The zoom lenses according to Examples 2 and 3 have substantially the same configuration as the zoom lens according to Example 1, but the second and third lenses L23 and L24 of the second lens group G2. Are combined to form a cemented lens. Accordingly, the surface number of the lens located on the image side from the second-fourth lens L24 is different from that of the first embodiment.
- the object side surface of the 2-2 lens L22 is composed of a composite aspheric surface, the object side surface R20 of the 3-4 lens L34, and the 4-1 lens.
- the object-side surface R24 and the image-side surface R25 of L41, and the object-side surface R31 of the fourth to fifth lens L45 are each formed of an aspherical surface.
- the center beam radii of the surface R20 at the telephoto end of the 3-4 lens L34 of the third lens group G3 are 7.885 mm and 7.728 mm, respectively.
- FIGS. 4A, 4B, and 4C are diagrams illustrating a configuration of a zoom lens according to Example 4 of the present invention.
- the zoom lens according to Example 4 has substantially the same configuration as the zoom lens according to Example 1, but the second and third lenses L23 and L24 of the second lens group G2 are cemented. Accordingly, the surface number of the lens located closer to the image side than the 2-4 lens L24 is shifted from that of the first embodiment by one, and the 3b lens group G3b is arranged in order from the object side to the image side. And a positive meniscus third 3-4 lens L34 having a convex surface and a negative third 3-5 lens L35 having a biconcave shape.
- the object side surface of the 2-2 lens L22 is composed of a composite aspheric surface, and the image side surface R23 of the 3-5 lens L35 and the 4-1 lens L41 are arranged.
- the object side surface R24, the image side surface R25, and the object side surface R31 of the fourth to fifth lens L45 are each formed of an aspherical surface.
- the central beam radius of the surface R23 at the telephoto end of the third to fifth lens L35 of the third lens group G3 is 7.715 mm.
- FIGS. 5A, 5B, and 5C are diagrams illustrating a configuration of a zoom lens according to Example 5 of the present invention.
- the zoom lens according to Example 5 has substantially the same configuration as the zoom lens according to Example 1, except that the object side surface of the 2-1 lens L21 is composed of a composite aspheric surface, and 2-2
- the lens L22 has no compound aspheric surface
- the 4b lens group G4b includes, in order from the object side, a negative meniscus fourth 4-4 lens L44 having a concave surface on the image side, and a positive surface having a convex surface on the object side.
- the difference is that it is composed of a meniscus fourth to fifth lens L45.
- the object-side surface of the 2-1 lens L21 is composed of a composite aspheric surface, and the object-side surface R21 of the 3-4 lens L34 and the 4-1 lens L41 are used.
- the object-side surface R25, the image-side surface R26, and the image-side surface R31 of the fourth to fifth lens L45 are each formed of an aspherical surface.
- Example 5 the center beam radius of the surface R21 at the telephoto end of the third to fourth lens L34 of the third lens group G3 is 8.644 mm.
- Table 16 shows a summary of the values for the conditional expressions described above for each example. As can be seen from Table 16, for conditional expressions (1) and (2), the values of the respective examples are within the numerical range.
- FIGS. 7A to 7C respectively show spherical aberration, astigmatism, and distortion at the wide-angle end in the zoom lens according to Example 1.
- FIG. 8A to 8C show similar aberrations in the intermediate range
- FIGS. 9A to 9C show similar aberrations at the telephoto end.
- Each aberration diagram shows an aberration with the d-line (587.6 nm) as a reference wavelength.
- the spherical aberration diagram also shows aberrations at a wavelength of 486.1 nm (F line) and a wavelength of 656.3 nm (C line).
- F line 486.1 nm
- C line a wavelength of 656.3 nm
- the solid line indicates the sagittal direction
- the broken line indicates the tangential direction.
- FNO Indicates an F value
- ⁇ indicates a half angle of view.
- FIGS. 10A to 10C wide-angle end
- FIGS. 11A to 11C intermediate region
- FIGS. C Telephoto end
- FIGS. 13 to 21 (A) to (C) various aberrations of the zoom lenses according to Examples 3 to 5 are shown in FIGS. 13 to 21 (A) to (C).
- this invention is not limited to the said embodiment and each Example, Various deformation
- the values of the radius of curvature, the surface interval, and the refractive index of each lens component are not limited to the values shown in the above numerical examples, and may take other values.
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Abstract
Description
前記第4レンズ群は物体側から順に、正の屈折力の第4aレンズ群、および負の屈折力の第4bレンズ群からなり、無限遠から至近に合焦する際に、前記第4bレンズ群のみが像側に移動することを特徴とするものである。
5.0<|ft/f3b|<10.0 … (2)
ft:望遠端における全系の焦点距離
f3b:前記第3bレンズ群の焦点距離
f4b:前記第4bレンズ群の焦点距離
なお、下記条件式(1-1)、(1-2)、(2-1)を満足するものとしてもよい。
3.0<|ft/f4b|<5.0 … (1-2)
6.0<|ft/f3b|<8.0 … (2-1)
本発明の撮像装置は、上記記載の本発明のズームレンズを備えたことを特徴とするものである。
ただし、
ft:望遠端における全系の焦点距離
f4b:第4bレンズ群G4bの焦点距離
条件式(1)を満足することにより、合焦動作を高速に行うことができるとともに、フォーカス制御を容易に行うことができる。条件式(1)の下限を下回ると、第4bレンズ群G4bのパワーが弱くなり、合焦時の第4bレンズ群G4bの移動量が大きくなってしまい、さらに第4bレンズ群G4bの有効径が大きくなる結果、合焦駆動系への負担が大きくなって高速で合焦させることが困難となる。条件式(1)の上限を上回ると、合焦移動に対する像移動の感度が高くなり過ぎて、ベストピント位置を探すための第4bレンズ群G4bの振幅移動量が小さくなり過ぎる結果、レンズが止まってしまう等してしまい、フォーカス制御が困難となる。
3.0<|ft/f4b|<5.0 … (1-2)
第4bレンズ群G4bは、少なくとも1面に、光軸から離れるに従い、負の屈折力が強まる形状の非球面を有することが好ましい。これにより、変倍時およびフォーカシング時における諸収差のバランスを取ることができるようになる。
ただし、
f3b:第3bレンズ群G3bの焦点距離
条件式(2)を満足することにより、第3bレンズ群G3bを駆動するためのアクチュエータのサイズの小型化および小さな振動に対する手ぶれ補正群の制御を容易に行うことができる。条件式(2)の下限を下回ると、第3bレンズ群G3bの屈折力が弱くなって、防振時に必要な第3bレンズ群G3bの移動量が大きくなり過ぎてしまい、これを駆動するためのアクチュエーターのサイズも大きくなってしまう。条件式(2)の上限を上回ると、第3bレンズ群G3bの屈折力が強くなって、防振時に必要な第3bレンズ群G3bの移動量が小さくなり過ぎてしまい、小さな振動に対する手ぶれ補正群の制御が困難になってしまう。
第3レンズ群G3は、少なくとも1面に、望遠端における面の中心光束半径の半分から中心光束半径までの範囲において、光軸から離れるに従い、負の屈折力が弱まる形状の非球面を有することが好ましい。さらに、第3bレンズ群G3bは、少なくとも1面に、望遠端における面の中心光束半径の半分から中心光束半径までの範囲において、光軸から離れるに従い、負の屈折力が弱まる形状の非球面を有することが好ましい。これにより、防振時および変倍時の諸収差の変動を抑えることができるようになる。
図22A、Bは、本実施形態に係る撮像装置の一例として、ミラーレス一眼カメラを示している。とくに図22Aは、このカメラを前側から見た外観を示し、図22Bは、このカメラを背面側から見た外観を示している。このカメラは、カメラ本体10を備え、そのカメラ本体10の上面側には、レリーズボタン32と電源ボタン33とが設けられている。カメラ本体10の背面側には、表示部36と操作部34,35とが設けられている。表示部36は、撮像された画像を表示するためのものである。
図1(A),(B),(C)は、本発明の実施例1に係るズームレンズの構成を示す図である。
(n=3以上の整数)
ただし、
Z:非球面の深さ(mm)
Y:光軸からレンズ面までの距離(高さ)(mm)
K:2次曲面を表す非球面係数
C:近軸曲率=1/R
(R:近軸曲率半径)
An:第n次の非球面係数
実施例1に係るズームレンズの非球面は、上記非球面式(A)に基づき、非球面係数AnについてはA3~A10までの次数を有効に用いて表している。
図2(A),(B),(C)は、本発明の実施例2に係るズームレンズの構成を示す図、図3(A),(B),(C)は、本発明の実施例3に係るズームレンズの構成を示す図である。実施例2,3に係るズームレンズは、第1の実施例に係るズームレンズと略同様の構成とされているが、第2レンズ群G2の第2-3レンズL23と第2-4レンズL24とが接合されて接合レンズを構成し、これに伴い、第2-4レンズL24より像側にあるレンズの面番号が実施例1とは1ずれる点において相違している。
図4(A),(B),(C)は、本発明の実施例4に係るズームレンズの構成を示す図である。実施例4に係るズームレンズは、実施例1に係るズームレンズと略同様の構成とされているが、第2レンズ群G2の第2-3レンズL23と第2-4レンズL24とが接合されて接合レンズを構成し、これに伴い、第2-4レンズL24より像側にあるレンズの面番号が実施例1とは1ずれ、さらに第3bレンズ群G3bが、物体側から順に、像側に凸面を向けた正のメニスカス形状の第3-4レンズL34、および両凹形状の負の第3-5レンズL35から構成されている点において相違している。
図5(A),(B),(C)は、本発明の実施例5に係るズームレンズの構成を示す図である。実施例5に係るズームレンズは、実施例1に係るズームレンズと略同様の構成とされているが、第2-1レンズL21の物体側の面が複合非球面で構成され、第2-2レンズL22に複合非球面がなく、第4bレンズ群G4bが、物体側から順に、像側に凹面を向けた負のメニスカス形状の第4-4レンズL44、および物体側に凸面を向けた正のメニスカス形状の第4-5レンズL45から構成されている点において相違している。
表16には、上述の各条件式に関する値を、各実施例についてまとめたものを示す。表16から分かるように、条件式(1)、(2)については、各実施例の値がその数値範囲内となっている。
図7(A)~(C)はそれぞれ、実施例1に係るズームレンズにおける広角端での球面収差、非点収差および歪曲収差を示している。図8(A)~(C)は中間域における同様の各収差を示し、図9(A)~(C)は、望遠端における同様の各収差を示している。各収差図には、d線(587.6nm)を基準波長とした収差を示す。球面収差図には、波長486.1nm(F線)、波長656.3nm(C線)についての収差も示す。非点収差図において、実線はサジタル方向、破線はタンジェンシャル方向の収差を示す。FNO.はF値、ωは半画角を示す。
Claims (11)
- 物体側から順に正の屈折力の第1レンズ群、負の屈折力の第2レンズ群、正の屈折力の第3レンズ群、および正の屈折力の第4レンズ群からなり、広角端から望遠端に変倍する際に、前記第1レンズ群と前記第2レンズ群との間隔が増大し、前記第2レンズ群と前記第3レンズ群との間隔が減少し、前記第3レンズ群と前記第4レンズ群との間隔が減少するように、前記各レンズ群が移動するズームレンズにおいて、
前記第4レンズ群は物体側から順に、正の屈折力の第4aレンズ群、および負の屈折力の第4bレンズ群からなり、無限遠から至近に合焦する際に、前記第4bレンズ群のみが像側に移動することを特徴とするズームレンズ。 - 下記条件式(1)を満足することを特徴とする請求項1記載のズームレンズ。
2.5<|ft/f4b|<10.0 … (1)
ただし、
ft:望遠端における全系の焦点距離
f4b:前記第4bレンズ群の焦点距離 - 下記条件式(1-1)を満足することを特徴とする請求項1記載のズームレンズ。
2.5<|ft/f4b|<7.0 … (1-1)
ただし、
ft:望遠端における全系の焦点距離
f4b:前記第4bレンズ群の焦点距離 - 下記条件式(1-2)を満足することを特徴とする請求項1記載のズームレンズ。
3.0<|ft/f4b|<5.0 … (1-2)
ただし、
ft:望遠端における全系の焦点距離
f4b:前記第4bレンズ群の焦点距離 - 前記第4bレンズ群は、少なくとも1面に、光軸から離れるに従い、負の屈折力が強まる形状の非球面を有することを特徴とする請求項1から4のいずれか1項記載のズームレンズ。
- 前記第3レンズ群は、物体側から順に、正の屈折力の第3aレンズ群と、負の屈折力の第3bレンズ群とからなり、前記第3bレンズ群を光軸と垂直方向に移動させることで手ぶれ補正を行うことを特徴とする請求項1から5のいずれか1項に記載のズームレンズ。
- 下記条件式(2)を満足することを特徴とする請求項6項記載のズームレンズ。
5.0<|ft/f3b|<10.0 … (2)
ただし、
ft:望遠端における全系の焦点距離
f3b:前記第3bレンズ群の焦点距離 - 下記条件式(2-1)を満足することを特徴とする請求項6記載のズームレンズ。
6.0<|ft/f3b|<8.0 … (2-1)
ただし、
ft:望遠端における全系の焦点距離
f3b:前記第3bレンズ群の焦点距離 - 前記第3レンズ群は、少なくとも1面に、望遠端における面の中心光束半径の半分から中心光束半径までの範囲において、光軸から離れるに従い、負の屈折力が弱まる形状の非球面を有することを特徴とする請求項1から8のいずれか1項記載のズームレンズ。
- 前記第3bレンズ群は、少なくとも1面に、望遠端における面の中心光束半径の半分から中心光束半径までの範囲において、光軸から離れるに従い、負の屈折力が弱まる形状の非球面を有することを特徴とする請求項6から8のいずれか1項記載のズームレンズ。
- 請求項1から10のいずれか1項記載のズームレンズを搭載したことを特徴とする撮像装置。
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2014126678A (ja) * | 2012-12-26 | 2014-07-07 | Tamron Co Ltd | ズームレンズ |
JP2014199421A (ja) * | 2013-03-13 | 2014-10-23 | キヤノン株式会社 | ズームレンズ及びそれを有する撮像装置 |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6692304B2 (ja) * | 2017-01-27 | 2020-05-13 | 富士フイルム株式会社 | ズームレンズおよび撮像装置 |
CN107238916B (zh) * | 2017-07-13 | 2019-12-24 | 福建福光股份有限公司 | 大变焦比、长焦距的高清连续变焦镜头 |
Citations (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5778514A (en) * | 1980-11-04 | 1982-05-17 | Minolta Camera Co Ltd | Zoom lens system |
JPS58137812A (ja) * | 1982-02-10 | 1983-08-16 | Konishiroku Photo Ind Co Ltd | ズ−ムレンズのインナ−フオ−カシング方式 |
JPS6278523A (ja) * | 1985-10-02 | 1987-04-10 | Canon Inc | 望遠型ズ−ムレンズ |
JPS63294506A (ja) * | 1986-10-29 | 1988-12-01 | Minolta Camera Co Ltd | 広角域を含む高変倍率ズ−ムレンズ |
JPH01185608A (ja) * | 1988-01-20 | 1989-07-25 | Olympus Optical Co Ltd | 変倍レンズ |
JPH0311314A (ja) * | 1989-06-09 | 1991-01-18 | Hitachi Ltd | リアフォーカス方式ズームレンズ |
JPH0496012A (ja) * | 1990-08-13 | 1992-03-27 | Olympus Optical Co Ltd | 変倍レンズ |
JPH095629A (ja) * | 1995-06-22 | 1997-01-10 | Sigma Corp | 高変倍率ズームレンズ |
JPH0933808A (ja) * | 1995-07-14 | 1997-02-07 | Olympus Optical Co Ltd | ズームレンズ |
JP2000275523A (ja) * | 1999-03-23 | 2000-10-06 | Olympus Optical Co Ltd | ズームレンズ系 |
JP2001111872A (ja) * | 1999-10-08 | 2001-04-20 | Olympus Optical Co Ltd | 撮像装置及び撮像装置システム |
JP2010145759A (ja) * | 2008-12-19 | 2010-07-01 | Nikon Corp | ズームレンズ、このズームレンズを備えた光学機器、及び、ズームレンズの製造方法 |
JP2010169983A (ja) * | 2009-01-24 | 2010-08-05 | Nikon Corp | ズームレンズ、このズームレンズを備えた光学機器、及び、ズームレンズの製造方法 |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4492437A (en) | 1980-11-04 | 1985-01-08 | Minolta Camera Kabushiki Kaisha | Zoom lens system |
JPS59155820A (ja) * | 1983-02-24 | 1984-09-05 | Canon Inc | ズ−ムレンズ |
US4871239A (en) | 1986-09-09 | 1989-10-03 | Minolta Camera Kabushiki Kaisha | Zoom lens system for minimal lens system length and minimal aberrations |
US5870231A (en) | 1995-06-30 | 1999-02-09 | Olympus Optical Co., Ltd. | Zoom lens system |
JPH0915502A (ja) * | 1995-07-03 | 1997-01-17 | Nikon Corp | 防振機能を備えたズームレンズ |
JP2000284175A (ja) * | 1999-03-30 | 2000-10-13 | Fuji Photo Optical Co Ltd | ズームレンズ |
JP4921044B2 (ja) * | 2006-06-08 | 2012-04-18 | キヤノン株式会社 | ズームレンズ及びそれを有する撮像装置 |
JP4974659B2 (ja) * | 2006-12-06 | 2012-07-11 | 株式会社リコー | ズームレンズ、カメラ装置および携帯情報端末装置 |
JP2009009104A (ja) | 2007-05-29 | 2009-01-15 | Nikon Corp | ズームレンズと、光学機器 |
EP2045637B1 (en) * | 2007-10-02 | 2019-07-10 | Nikon Corporation | Zoom lens system |
JP5126663B2 (ja) * | 2007-11-02 | 2013-01-23 | 株式会社ニコン | ズームレンズ及びこのズームレンズを備えた光学機器 |
JP5202022B2 (ja) * | 2008-02-19 | 2013-06-05 | キヤノン株式会社 | ズームレンズ及びそれを有する撮像装置 |
JP5178322B2 (ja) * | 2008-05-26 | 2013-04-10 | キヤノン株式会社 | ズームレンズ及びそれを有する撮像装置 |
EP2390705B1 (en) | 2009-01-24 | 2018-08-01 | Nikon Corporation | Zoom lens, optical device provided with zoom lens and method for manufacturing zoom lens |
JP5489480B2 (ja) * | 2009-01-30 | 2014-05-14 | キヤノン株式会社 | ズームレンズ及びそれを有する撮像装置 |
KR101706266B1 (ko) * | 2009-12-24 | 2017-02-27 | 삼성전자주식회사 | 줌 렌즈 및 이를 구비한 촬영 장치 |
-
2012
- 2012-12-25 WO PCT/JP2012/008256 patent/WO2013099210A1/ja active Application Filing
- 2012-12-25 CN CN201280064440.2A patent/CN104011578B/zh active Active
- 2012-12-25 JP JP2013551234A patent/JP5583864B2/ja active Active
-
2014
- 2014-06-25 US US14/314,050 patent/US9013805B2/en active Active
Patent Citations (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5778514A (en) * | 1980-11-04 | 1982-05-17 | Minolta Camera Co Ltd | Zoom lens system |
JPS58137812A (ja) * | 1982-02-10 | 1983-08-16 | Konishiroku Photo Ind Co Ltd | ズ−ムレンズのインナ−フオ−カシング方式 |
JPS6278523A (ja) * | 1985-10-02 | 1987-04-10 | Canon Inc | 望遠型ズ−ムレンズ |
JPS63294506A (ja) * | 1986-10-29 | 1988-12-01 | Minolta Camera Co Ltd | 広角域を含む高変倍率ズ−ムレンズ |
JPH01185608A (ja) * | 1988-01-20 | 1989-07-25 | Olympus Optical Co Ltd | 変倍レンズ |
JPH0311314A (ja) * | 1989-06-09 | 1991-01-18 | Hitachi Ltd | リアフォーカス方式ズームレンズ |
JPH0496012A (ja) * | 1990-08-13 | 1992-03-27 | Olympus Optical Co Ltd | 変倍レンズ |
JPH095629A (ja) * | 1995-06-22 | 1997-01-10 | Sigma Corp | 高変倍率ズームレンズ |
JPH0933808A (ja) * | 1995-07-14 | 1997-02-07 | Olympus Optical Co Ltd | ズームレンズ |
JP2000275523A (ja) * | 1999-03-23 | 2000-10-06 | Olympus Optical Co Ltd | ズームレンズ系 |
JP2001111872A (ja) * | 1999-10-08 | 2001-04-20 | Olympus Optical Co Ltd | 撮像装置及び撮像装置システム |
JP2010145759A (ja) * | 2008-12-19 | 2010-07-01 | Nikon Corp | ズームレンズ、このズームレンズを備えた光学機器、及び、ズームレンズの製造方法 |
JP2010169983A (ja) * | 2009-01-24 | 2010-08-05 | Nikon Corp | ズームレンズ、このズームレンズを備えた光学機器、及び、ズームレンズの製造方法 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2014126678A (ja) * | 2012-12-26 | 2014-07-07 | Tamron Co Ltd | ズームレンズ |
JP2014199421A (ja) * | 2013-03-13 | 2014-10-23 | キヤノン株式会社 | ズームレンズ及びそれを有する撮像装置 |
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JPWO2013099210A1 (ja) | 2015-04-30 |
CN104011578B (zh) | 2016-03-09 |
CN104011578A (zh) | 2014-08-27 |
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