WO2016121903A1 - 変倍光学系、光学機器及び変倍光学系の製造方法 - Google Patents
変倍光学系、光学機器及び変倍光学系の製造方法 Download PDFInfo
- Publication number
- WO2016121903A1 WO2016121903A1 PCT/JP2016/052596 JP2016052596W WO2016121903A1 WO 2016121903 A1 WO2016121903 A1 WO 2016121903A1 JP 2016052596 W JP2016052596 W JP 2016052596W WO 2016121903 A1 WO2016121903 A1 WO 2016121903A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- lens group
- lens
- object side
- thirty
- optical system
- Prior art date
Links
Images
Classifications
-
- 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
- G02B15/1445—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 negative
- G02B15/144511—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 negative arranged -+-+
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/02—Telephoto objectives, i.e. systems of the type + - in which the distance from the front vertex to the image plane is less than the equivalent focal length
-
- 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
- G02B15/16—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
- G02B15/177—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 having a negative front lens or group of lenses
-
- 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
-
- 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
- G03B5/00—Adjustment of optical system relative to image or object surface other than for focusing
-
- 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
- G03B5/00—Adjustment of optical system relative to image or object surface other than for focusing
- G03B5/04—Vertical adjustment of lens; Rising fronts
-
- 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
- G03B2205/0015—Movement of one or more optical elements for control of motion blur by displacing one or more optical elements normal to the optical axis
-
- 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 variable magnification optical system, an optical apparatus, and a method for manufacturing the variable magnification optical system.
- a variable magnification optical system includes a first lens group having a negative refractive power, a second lens group having a positive refractive power, and a negative refractive power, which are arranged in order from the object side.
- the zooming is performed by changing the interval and the interval between the third lens group and the fourth lens group, and the third lens group is perpendicular to the optical axis in order to correct image blur as an anti-vibration lens group.
- a thirty-second lens group configured to be movable so as to have a directional component, and a thirty-first lens group disposed on the object side of the thirty-second lens group, and the thirty-second lens group has a negative refractive power
- a zoom lens system that satisfies the following conditional expression: 0.200 ⁇ f1 / f3 ⁇ 0.900
- f1 the focal length of the first lens group
- f3 focal length of the third lens group.
- a variable magnification optical system includes a first lens group having a negative refractive power, a second lens group having a positive refractive power, and a negative refractive power arranged in order from the object side.
- the third lens group is used as an anti-vibration lens group by changing the distance between the lens groups.
- a thirty-second lens group configured to be movable so as to have a component perpendicular to the optical axis in order to correct image blur, and disposed on the object side of the thirty-second lens group in the direction perpendicular to the optical axis during image blur correction.
- An optical apparatus includes the above-described variable magnification optical system.
- a variable magnification optical system manufacturing method includes a first lens group having a negative refractive power, a second lens group having a positive refractive power, and a negative lens, which are arranged in order from the object side. And a fourth lens group having a positive refractive power, an interval between the first lens group and the second lens group, and the second lens group and the second lens group.
- a method of manufacturing a zoom optical system that performs zooming by changing an interval between three lens groups and an interval between the third lens group and the fourth lens group, wherein the third lens group A thirty-second lens group configured to be movable so as to have a component perpendicular to the optical axis in order to correct image blur as a vibration lens group, and a thirty-first lens group disposed on the object side of the thirty-second lens group;
- the thirty-second lens group has a negative refractive power and satisfies the following conditional expression: Placing each lens in the lens barrel. 0.200 ⁇ f1 / f3 ⁇ 0.900 However, f1: the focal length of the first lens group, f3: focal length of the third lens group.
- a variable magnification optical system manufacturing method includes a first lens group having a negative refractive power, a second lens group having a positive refractive power, and a negative lens, which are arranged in order from the object side. And a fourth lens group having positive refracting power, and a method of manufacturing a variable power optical system that performs zooming by changing the distance between the lens groups.
- the third lens group includes a thirty-second lens group configured to be movable so as to have a component perpendicular to the optical axis in order to correct image blur as an anti-vibration lens group, and an object side of the thirty-second lens group.
- a thirty-first lens group whose position in the direction perpendicular to the optical axis does not move during image blur correction, the thirty-first lens group has a positive or negative refractive power, and the thirty-second lens group Each lens in the lens barrel has negative refractive power and satisfies the following conditional expression Arrangement will be. 0.200 ⁇ f1 / f3 ⁇ 0.900 However, f1: the focal length of the first lens group, f3: focal length of the third lens group.
- (W), (M), and (T) are cross-sectional views of the zoom optical system according to the first example in the wide-angle end state, the intermediate focal length state, and the telephoto end state, respectively.
- (A), (b), and (c) are various aberration diagrams at the time of focusing at infinity in the wide-angle end state, the intermediate focal length state, and the telephoto end state of the variable magnification optical system according to the first example. is there.
- (A), (b), and (c) are graphs showing various aberrations when focusing on the close-up distance in the wide-angle end state, intermediate focal length state, and telephoto end state of the variable magnification optical system according to the first example. is there.
- FIG. (W), (M), and (T) are cross-sectional views of the zoom optical system according to the second example in the wide-angle end state, the intermediate focal length state, and the telephoto end state, respectively.
- (A), (b), and (c) are various aberration diagrams during focusing at infinity in the wide-angle end state, intermediate focal length state, and telephoto end state of the variable magnification optical system according to the second example. is there.
- FIG. (W), (M), and (T) are sectional views of the zoom optical system according to the third example in the wide-angle end state, the intermediate focal length state, and the telephoto end state, respectively.
- (A), (b), and (c) are various aberration diagrams at the time of focusing at infinity in the wide-angle end state, the intermediate focal length state, and the telephoto end state of the variable magnification optical system according to the third example. is there.
- (A), (b), and (c) are graphs showing various aberrations when focusing on the close-up distance in the wide-angle end state, intermediate focal length state, and telephoto end state of the variable magnification optical system according to the third example. is there.
- (A), (b), and (c) perform image blur correction at the time of focusing at infinity in the wide-angle end state, the intermediate focal length state, and the telephoto end state of the variable magnification optical system according to the third example.
- (W), (M), and (T) are cross-sectional views of the zoom optical system according to the fourth example in the wide-angle end state, the intermediate focal length state, and the telephoto end state, respectively.
- (A), (b), and (c) are various aberration diagrams during focusing at infinity in the wide-angle end state, the intermediate focal length state, and the telephoto end state of the variable magnification optical system according to the fourth example. is there.
- (A), (b), and (c) are graphs showing various aberrations when focusing on the close-up distance in the wide-angle end state, the intermediate focal length state, and the telephoto end state of the zoom optical system according to the fourth example. is there.
- FIG. (W), (M), and (T) are cross-sectional views of the zoom optical system according to the fifth example in the wide-angle end state, the intermediate focal length state, and the telephoto end state, respectively.
- (A), (b), and (c) are various aberration diagrams during focusing at infinity in the wide-angle end state, the intermediate focal length state, and the telephoto end state of the variable magnification optical system according to the fifth example. is there.
- FIG. (W), (M), and (T) are sectional views of the zoom optical system according to the sixth example in the wide-angle end state, the intermediate focal length state, and the telephoto end state, respectively.
- (A), (b), and (c) are various aberration diagrams at the time of focusing at infinity in the wide-angle end state, the intermediate focal length state, and the telephoto end state of the variable magnification optical system according to the sixth example. is there.
- (A), (b), and (c) are graphs showing various aberrations when focusing on the close-up distance in the wide-angle end state, the intermediate focal length state, and the telephoto end state of the variable magnification optical system according to the sixth example. is there.
- (A), (b), and (c) perform image blur correction at the time of focusing at infinity in the wide-angle end state, the intermediate focal length state, and the telephoto end state of the variable magnification optical system according to the sixth example.
- (W), (M), and (T) are sectional views of the zoom optical system according to the seventh example in the wide-angle end state, the intermediate focal length state, and the telephoto end state, respectively.
- (A), (b), and (c) are various aberration diagrams at the time of focusing at infinity in the wide-angle end state, the intermediate focal length state, and the telephoto end state of the variable magnification optical system according to the seventh example. is there.
- (A), (b), and (c) are graphs showing various aberrations when focusing on the close-up distance in the wide-angle end state, the intermediate focal length state, and the telephoto end state of the variable magnification optical system according to the seventh example. is there.
- FIG. (W), (M), and (T) are sectional views of the variable magnification optical system according to the eighth example in the wide-angle end state, the intermediate focal length state, and the telephoto end state, respectively.
- (A), (b), and (c) are various aberration diagrams at the time of focusing at infinity in the wide-angle end state, the intermediate focal length state, and the telephoto end state of the variable magnification optical system according to the eighth example. is there.
- FIG. (W), (M), and (T) are sectional views of the variable magnification optical system according to Example 9 in the wide-angle end state, the intermediate focal length state, and the telephoto end state, respectively.
- (A), (b), and (c) are various aberration diagrams at the time of focusing at infinity in the wide-angle end state, the intermediate focal length state, and the telephoto end state of the variable magnification optical system according to the ninth example. is there.
- (A), (b), and (c) are graphs showing various aberrations when focusing on the close-up distance in the wide-angle end state, the intermediate focal length state, and the telephoto end state of the variable magnification optical system according to the ninth example. is there.
- (A), (b), and (c) perform image blur correction at the time of focusing at infinity in the wide-angle end state, the intermediate focal length state, and the telephoto end state of the variable magnification optical system according to the ninth example.
- (W), (M), and (T) are sectional views of the zoom optical system according to the tenth example in the wide-angle end state, the intermediate focal length state, and the telephoto end state, respectively.
- (A), (b), and (c) are various aberration diagrams at the time of focusing at infinity in the wide-angle end state, the intermediate focal length state, and the telephoto end state of the variable magnification optical system according to the tenth example. is there.
- (A), (b), and (c) are graphs showing various aberrations when focusing on the close-up distance in the wide-angle end state, the intermediate focal length state, and the telephoto end state of the variable magnification optical system according to the tenth example. is there.
- FIG. (W), (M), and (T) are cross-sectional views of the zoom optical system according to the eleventh example in the wide-angle end state, the intermediate focal length state, and the telephoto end state, respectively.
- (A), (b), and (c) are various aberration diagrams during focusing at infinity in the wide-angle end state, intermediate focal length state, and telephoto end state of the variable magnification optical system according to the eleventh example. is there.
- FIG. (W), (M), and (T) are sectional views of the variable magnification optical system according to Example 12 in the wide-angle end state, the intermediate focal length state, and the telephoto end state, respectively.
- (A), (b), and (c) are various aberration diagrams at the time of focusing at infinity in the wide-angle end state, the intermediate focal length state, and the telephoto end state of the variable magnification optical system according to the twelfth example. is there.
- (A), (b), and (c) are graphs showing various aberrations when focusing on the close-up distance in the wide-angle end state, the intermediate focal length state, and the telephoto end state of the variable magnification optical system according to the twelfth example. is there.
- FIG. (W), (M), and (T) are sectional views of the variable magnification optical system according to Example 13 in the wide-angle end state, the intermediate focal length state, and the telephoto end state, respectively.
- (A), (b), and (c) are various aberration diagrams at the time of focusing at infinity in the wide-angle end state, the intermediate focal length state, and the telephoto end state of the variable magnification optical system according to the thirteenth example. is there.
- FIG. It is a figure which shows an example of a structure of the camera carrying a variable magnification optical system. It is a figure which shows the outline of an example of the manufacturing method of a variable magnification optical system. It is a figure which shows the outline of an example of the manufacturing method of a variable magnification optical system.
- FIG. 1 shows an example of the configuration of the variable magnification optical system ZL.
- the number of lens groups, the lens configuration in each lens group, and the like can be changed as appropriate.
- variable magnification optical system ZL includes a first lens group G1 having a negative refractive power, a second lens group G2 having a positive refractive power, and a negative refractive power arranged in order from the object side.
- the magnification is changed by changing the distance between the third lens group G3 and the fourth lens group G4, and the third lens group G3 corrects image blur as an anti-vibration lens group (VR).
- the thirty-second lens group G32 is configured to be movable so as to have a component perpendicular to the optical axis, and the thirty-first lens group G31 is disposed on the object side of the thirty-second lens group G32.
- Group G32 has negative refractive power.
- variable magnification optical system ZL has a first lens group G1 having negative refractive power, a second lens group G2 having positive refractive power, and negative refractive power, which are arranged in order from the object side. It has a third lens group G3 and a fourth lens group G4 having a positive refractive power, and performs zooming by changing the interval between the lens groups.
- the third lens group G3 is an anti-vibration lens group ( VR) and a thirty-second lens group G32 configured to be movable so as to have a component perpendicular to the optical axis in order to correct image blur, and disposed on the object side of the thirty-second lens group G32.
- the 31st lens group G31 whose position in the vertical direction does not move, the 31st lens group G31 has a positive or negative refractive power, and the 32nd lens group G32 has a negative refractive power.
- the negative third lens group G3 is configured to have a 31st lens group G31 and a negative 32nd lens group G32, and the 32nd lens group G32 has a component in a direction perpendicular to the optical axis.
- the F value is decreased (lightened) and the image height is increased.
- the image height is increased.
- manufacturing sensitivity increases and manufacturing becomes difficult.
- a part of the third lens group G3 is an anti-vibration lens group and a lens that is on the object side of the anti-vibration lens group and is fixed in the third lens group G3 at the time of anti-vibration, the F value is reduced. Has the effect that the vibration-proof performance does not deteriorate.
- variable magnification optical system ZL satisfies the following conditional expression (1). 0.200 ⁇ f1 / f3 ⁇ 0.900 (1) However, f1: Focal length of the first lens group G1 f3: focal length of the third lens group G3.
- Conditional expression (1) is a conditional expression for satisfactorily correcting curvature of field and coma aberration while obtaining a wide angle of view (a half angle of view of about 50 ° or more) in the wide-angle end state.
- the focal length of the first lens group G1 becomes long, and it becomes difficult to obtain a wide angle of view (a half angle of view of about 50 ° or more) in the wide-angle end state.
- the total lens length and the lens diameter of the first lens group G1 are increased.
- the upper limit value of conditional expression (1) is 0.800. In order to ensure the effect, it is preferable that the upper limit value of conditional expression (1) is 0.700.
- conditional expression (1) If the lower limit value of conditional expression (1) is not reached, the focal length of the first lens group G1 becomes short, it becomes difficult to correct curvature of field and coma, and it may be difficult to realize good imaging performance. .
- the lower limit value of conditional expression (1) is 0.250. In order to ensure the effect, it is preferable that the lower limit value of conditional expression (1) is 0.300.
- variable magnification optical system ZL preferably satisfies the following conditional expression (2). 0.700 ⁇ f32 / f3 ⁇ 2.500 (2) However, f32: Focal length of the 32nd lens group G32.
- Conditional expression (2) is a conditional expression for defining the focal length of the thirty-second lens group G32, which is the image stabilizing lens group (VR), with respect to the focal length of the third lens group G3.
- conditional expression (2) it is possible to make the amount of movement of the thirty-second lens group G32 appropriate while improving the imaging performance during image blur correction.
- the focal length of the thirty-second lens group G32 becomes longer, and the amount of movement of the thirty-second lens group G32 during image blur correction increases. For this reason, the image blur correction mechanism may be increased in size.
- conditional expression (2) is 2.100. In order to ensure the effect, it is preferable that the upper limit value of the conditional expression (2) is 1.700.
- conditional expression (2) If the lower limit value of conditional expression (2) is not reached, the focal length of the thirty-second lens group G32 will be shortened, and the occurrence of decentration coma aberration or one-side blur occurring during image blur correction will increase, resulting in good results during image blur correction. It is difficult to maintain image performance.
- conditional expression (2) In order to ensure the effect, it is preferable that the lower limit value of conditional expression (2) is 0.800. In order to ensure the effect, it is preferable that the lower limit value of conditional expression (2) is 0.900.
- variable magnification optical system ZL preferably satisfies the following conditional expression (3). 0.400 ⁇ f4 / f2 ⁇ 1.600 (3) However, f4: focal length of the fourth lens group G4, f2: focal length of the second lens group G2.
- Conditional expression (3) is a conditional expression for defining an appropriate ratio between the focal length of the second lens group G2 and the focal length of the fourth lens group G4. By satisfying conditional expression (3), it is possible to reduce the overall length of the lens while realizing a bright F value (about F2.8 to F3.5) and good correction of various aberrations including spherical aberration. Can be planned.
- the focal length of the second lens group G2 will be shorter than the focal length of the fourth lens group G4, making it difficult to correct spherical aberration. As a result, it is difficult to achieve a bright F value (about F2.8 to F3.5).
- conditional expression (3) is 1.400. In order to ensure the effect, it is preferable that the upper limit value of conditional expression (3) is 1.200.
- the focal length of the second lens group G2 becomes longer than the focal length of the fourth lens group G4, and it is difficult to reduce the total lens length.
- the lower limit value of conditional expression (3) is 0.500. In order to secure the effect, it is preferable that the lower limit value of conditional expression (3) is 0.600.
- the thirty-second lens group G32 is composed of a cemented lens of a positive lens and a negative lens.
- This configuration is effective for correcting decentration coma and one-sided blur when the 32nd lens group G32 is moved for image blur correction.
- the lens that moves for image blur correction can be reduced in size and weight, which is effective in reducing the size of the image blur correction mechanism and the entire lens.
- the thirty-first lens group G31 preferably has a negative lens and a positive lens.
- This configuration is effective for correcting decentration coma and one-sided blur when the 32nd lens group G32 is moved for image blur correction.
- the thirty-first lens group G31 is preferably composed of a negative lens and a positive lens arranged in order from the object side.
- This configuration is effective for correcting decentration coma and one-sided blur when the 32nd lens group G32 is moved for image blur correction.
- the thirty-first lens group G31 is preferably composed of a cemented lens of a negative lens and a positive lens arranged in order from the object side.
- This configuration is effective for correcting decentration coma and one-sided blur when the 32nd lens group G32 is moved for image blur correction.
- the thirty-first lens group G31 is preferably composed of a positive lens and a negative lens arranged in order from the object side.
- This configuration is effective for correcting decentration coma and one-sided blur when the 32nd lens group G32 is moved for image blur correction.
- the thirty-first lens group 31 includes a cemented lens of a positive lens and a negative lens arranged in order from the object side.
- This configuration is effective for correcting decentration coma and one-sided blur when the 32nd lens group G32 is moved for image blur correction.
- the second lens group G2 includes a twenty-first lens group G21 having a positive refractive power and a twenty-second lens group G22 having a positive refractive power, which are arranged in order from the object side. It is preferable to perform focusing by moving the 21 lens group G21 in the optical axis direction as a focusing lens group.
- the lens group that moves during focusing can be reduced in size and weight, the entire lens system can be reduced in size, and the focusing speed during autofocus can be increased.
- the most image-side lens surface of the thirty-second lens group G32 is preferably an aspherical surface.
- This configuration is effective for correcting decentration coma and one-sided blur when the 32nd lens group G32 is moved for image blur correction.
- variable magnification optical system ZL preferably satisfies the following conditional expression (4). 1.100 ⁇ A (T3.5) / A (T4.0) ⁇ 5.000 (4) However, A (T3.5): On the point where the axial ray corresponding to the F value of F / 3.5 in the telephoto end state passes through the aspherical surface formed on the lens surface closest to the image side of the thirty-second lens group G32. Aspheric amount, A (T4.0): An axial ray corresponding to an F value of F / 4.0 in the telephoto end state passes through an aspherical surface formed on the lens surface closest to the image side of the thirty-second lens group G32. Aspheric amount. The aspheric amount is an amount obtained by measuring the sag amount of the aspheric surface with respect to the approximate spherical surface along the optical axis on the aspheric optical axis.
- Conditional expression (4) is a conditional expression for defining an appropriate value of the aspheric amount on the most aspherical surface on the image side of the thirty-second lens group G32.
- conditional expression (4) If the upper limit of conditional expression (4) is exceeded, the aspheric amount of the thirty-second lens group G32 becomes excessive, and decentration coma and one-sided blur when the thirty-second lens group G32 is moved for image blur correction are corrected. Difficult to do.
- conditional expression (4) In order to ensure the effect, it is preferable to set the upper limit of conditional expression (4) to 4.000. In order to ensure the effect, it is preferable that the upper limit value of conditional expression (4) is 3.000.
- conditional expression (4) If the lower limit value of conditional expression (4) is not reached, the aspheric amount of the thirty-second lens group G32 is insufficient, and decentration coma and one-sided blur when the thirty-second lens group G32 is moved for image blur correction are corrected. Difficult to do.
- conditional expression (4) is 1.250. In order to ensure the effect, it is preferable that the lower limit value of the conditional expression (4) is 1.400.
- variable magnification optical system ZL having a wide angle of view and excellent correction of various aberrations.
- FIG. 53 shows an example of the configuration of a camera equipped with a variable magnification optical system.
- the camera 1 is an interchangeable lens camera (so-called mirrorless camera) provided with the above-described variable magnification optical system ZL as the photographing lens 2.
- this camera 1 light from an object (not shown) that is not shown is condensed by the taking lens 2, and then on the image pickup surface of the image pickup unit 3 via an OLPF (Optical Low Pass Filter) that is not shown.
- a subject image is formed on the screen.
- the subject image is photoelectrically converted by the photoelectric conversion element provided in the imaging unit 3 to generate an image of the subject.
- This image is displayed on an EVF (Electronic view finder) 4 provided in the camera 1.
- EVF Electronic view finder
- variable magnification optical system ZL mounted on the camera 1 as the photographic lens 2 has a wide angle of view and various aberrations are corrected satisfactorily by its characteristic lens configuration, as will be understood from each example described later. Have excellent optical performance. Therefore, according to the camera 1, it is possible to realize an optical apparatus having a wide angle of view, various aberrations being favorably corrected, and good optical performance.
- the example of the mirrorless camera was demonstrated as the camera 1, it is not limited to this.
- the above zooming optical system ZL is mounted on a single-lens reflex camera that has a quick return mirror in the camera body and observes a subject with a viewfinder optical system, the same effect as the camera 1 can be obtained. Can do.
- variable magnification optical system ZL an example of a manufacturing method of the above-described variable magnification optical system ZL will be outlined.
- 54 and 55 show an example of a method for manufacturing the variable magnification optical system ZL.
- Each lens is arranged so as to perform zooming by changing the distance between the lens group G3 and the distance between the third lens group G3 and the fourth lens group G4 (step ST1).
- the third lens group G3 includes a thirty-second lens group G32 configured to be movable so as to have a component perpendicular to the optical axis in order to correct image blur as an anti-vibration lens group (VR), and a thirty-second lens group G32.
- the thirty-first lens group G31 is arranged on the object side, and the thirty-second lens group G32 arranges each lens so as to have a negative refractive power (step ST2).
- Each lens is arranged in the lens barrel so as to satisfy the following conditional expression (1) (step ST3). 0.200 ⁇ f1 / f3 ⁇ 0.900 (1) However, f1: the focal length of the first lens group, f3: focal length of the third lens group.
- the thirty-first lens group G31 whose position in the direction perpendicular to the optical axis does not move during image blur correction.
- the thirty-first lens group G31 has a positive or negative refractive power and has a thirty-second lens.
- the lenses are arranged so as to have a negative refractive power (step ST20).
- Each lens is arranged so as to satisfy the following conditional expression (1) (step ST30). 0.200 ⁇ f1 / f3 ⁇ 0.900 (1) However, f1: Focal length of the first lens group G1 f3: focal length of the third lens group G3.
- a negative meniscus lens L11 having a concave surface facing the image side, a biconcave lens L12, a biconcave lens L13, and a biconvex lens L14 are arranged in order from the object side.
- a first lens group G1 a cemented lens of a biconvex lens L21, a negative meniscus lens L22 having a concave surface facing the image side and a positive meniscus lens L23 having a convex surface facing the object side, and a concave surface facing the biconvex lens L24 and the object side
- the second lens group G2 is formed by arranging a cemented lens with a negative meniscus lens L25 facing the lens, and includes a biconcave lens L31, a biconvex lens L32, a biconcave lens L33, and a positive meniscus lens L34 having a convex surface facing the object side.
- a cemented lens is arranged to form a third lens group G3, a biconvex lens L41, a cemented lens of a biconcave lens L42 and a biconcave lens L43, and a biconvex lens. Place the L44 and a biconcave lens L45 and the fourth lens group G4 with.
- the third lens group G3 includes a biconcave lens L31 to a biconvex lens L32 as a thirty-first lens group G31.
- a cemented lens of the biconcave lens L33 and a positive meniscus lens L34 having a convex surface directed toward the object side is the thirty-second lens group G32.
- Anti-vibration lens group VR Anti-vibration lens group VR.
- the lens groups thus prepared are arranged in the above-described procedure to manufacture the variable magnification optical system ZL.
- variable magnification optical system ZL having a wide angle of view and having various aberrations corrected satisfactorily.
- FIG. 3 is a cross-sectional view showing a configuration of ZL (ZL1 to ZL13) and refractive power distribution.
- ZL1 to ZL13 the optical axis of each lens group when changing the magnification from the wide-angle end state (W) through the intermediate focal length state (M) to the telephoto end state (T) is shown.
- the moving direction along is indicated by an arrow.
- variable magnification optical systems ZL1 to ZL13 In the upper part of the sectional view of the variable magnification optical systems ZL1 to ZL13, the moving direction of the focusing lens group when focusing on an object at a short distance from infinity is indicated by an arrow, and the anti-vibration lens group when correcting image blurring The state of VR is also shown.
- each reference symbol for FIG. 1 according to the first embodiment is used independently for each embodiment in order to avoid complication of explanation due to an increase in the number of digits of the reference symbol. Therefore, even if the same reference numerals as those in the drawings according to the other embodiments are given, they are not necessarily in the same configuration as the other embodiments.
- Tables 1 to 13 are shown below. These are tables of specifications in the first to thirteenth examples.
- d-line (wavelength 587.562 nm) and g-line (wavelength 435.835 nm) are selected as the calculation targets of the aberration characteristics.
- the surface number is the order of the optical surfaces from the object side along the light traveling direction
- R is the radius of curvature of each optical surface
- D is the next optical surface from each optical surface
- Or nd is the refractive index of the material of the optical member with respect to the d-line
- ⁇ d is the Abbe number based on the d-line of the material of the optical member.
- (Di) indicates the surface interval between the i-th surface and the (i + 1) -th surface
- (aperture stop) indicates the aperture stop S.
- the optical surface is an aspherical surface
- the surface number is marked with *
- the column of curvature radius R indicates the paraxial curvature radius.
- f is the focal length of the entire lens system
- FNo is the F number
- ⁇ is the half angle of view (unit: °)
- Y is the maximum image height
- BF is the optical axis at the time of focusing on infinity.
- the distance from the last lens surface to the image surface I is expressed in terms of air length.
- TL is the distance from the front lens surface to the last lens surface on the optical axis when focusing on infinity. Each one is shown.
- Di is the surface distance between the i-th surface and the (i + 1) -th surface
- D0 is the axial air space between the object surface and the lens surface closest to the object side of the first lens group G1
- f represents the focal length of the entire lens system
- ⁇ represents the photographing magnification.
- mm is generally used for the focal length f, the radius of curvature R, the surface interval D, and other lengths, etc. unless otherwise specified.
- the optical system is not limited to this because the same optical performance can be obtained even when proportional expansion or proportional reduction is performed.
- the unit is not limited to “mm”, and other appropriate units can be used.
- variable magnification optical system ZL (ZL1) includes a first lens group G1 having negative refractive power arranged in order from the object side, and a first lens group having positive refractive power.
- the first lens group G1 is composed of a negative meniscus lens L11 having a concave surface facing the image side, a biconcave lens L12, a biconcave lens L13, and a biconvex lens L14 arranged in order from the object side.
- the negative meniscus lens L11 is a glass mold aspheric lens in which both lens surfaces are aspherical.
- the biconcave lens L12 is a glass mold aspheric lens having an aspheric lens surface on the object side.
- the second lens group G2 includes a twenty-first lens group G21 having a positive refractive power and a twenty-second lens group G22 having a positive refractive power, which are arranged in order from the object side.
- the twenty-first lens group G21 includes a biconvex lens L21 arranged in order from the object side, and a cemented lens of a negative meniscus lens L22 having a concave surface facing the image side and a positive meniscus lens L23 having a convex surface facing the object side.
- the 22nd lens group G22 is composed of a cemented lens composed of a biconvex lens L24 and a negative meniscus lens L25 having a concave surface directed toward the object side, which are arranged in order from the object side.
- the third lens group G3 includes a thirty-first lens group G31 having negative refractive power and a thirty-second lens group G32 having negative refractive power, which are arranged in order from the object side.
- the thirty-first lens group G31 includes a biconcave lens L31 and a biconvex lens L32 which are arranged in order from the object side.
- the thirty-second lens group G32 is composed of a cemented lens which is arranged in order from the object side and includes a biconcave lens L33 and a positive meniscus lens L34 having a convex surface directed toward the object side.
- the positive meniscus lens L34 is a glass mold aspheric lens having an aspheric lens surface on the image side.
- the fourth lens group G4 includes a biconvex lens L41, a cemented lens of a biconvex lens L42 and a biconcave lens L43, and a cemented lens of a biconvex lens L44 and a biconcave lens L45, which are arranged in order from the object side.
- the biconcave lens L45 is a glass mold aspheric lens having an aspheric lens surface on the image side.
- An aperture stop S is provided between the second lens group G2 and the third lens group G3, and the aperture stop S constitutes the third lens group G3.
- the zooming from the wide-angle end state to the telephoto end state is performed by changing each lens group interval (the interval between the first lens group G1 and the second lens group G2, the interval between the second lens group G2 and the third lens group G3,
- the first lens group G1 is once moved to the image side and then moved to the object side so that the distance between the third lens group G3 and the fourth lens group G4 changes), and the second lens group G2 is moved to the object side.
- the third lens group G3 is moved to the object side, and the fourth lens group G4 is moved to the object side.
- the aperture stop S is moved to the object side integrally with the third lens group G3.
- Focusing from infinity to a close object is performed by moving the 21st lens group G21 to the image side.
- image blur correction on the image plane I is performed by moving the thirty-second lens group G32 as a vibration-proof lens group VR so as to have a component perpendicular to the optical axis.
- the image stabilization coefficient ratio of the amount of image movement on the imaging surface to the amount of movement of the moving lens group in shake correction
- K rotational blurring at an angle ⁇ is used.
- the thirty-first lens group G31 located on the object side of the thirty-second lens group G32 is fixed at the time of image blur correction.
- the image stabilization coefficient in the wide-angle end state, is ⁇ 0.73 and the focal length is 16.40 mm. Therefore, the image stabilization lens group VR for correcting the rotation blur of 0.81 degrees is used.
- the amount of movement is -0.32 mm.
- the image stabilization coefficient In the intermediate focal length state, the image stabilization coefficient is ⁇ 0.85 and the focal length is 23.50 mm. Therefore, the amount of movement of the image stabilization lens group VR for correcting the rotation blur of 0.68 degrees is ⁇ 0. .33 mm.
- the image stabilization coefficient In the telephoto end state, the image stabilization coefficient is ⁇ 1.14, and the focal length is 34.00 mm. 29 mm.
- Table 1 below shows the values of each item in the first example.
- Surface numbers 1 to 32 in Table 1 correspond to the optical surfaces m1 to m32 shown in FIG.
- variable magnification optical system ZL1 satisfies the conditional expressions (1) to (4).
- FIG. 2 is a diagram showing various aberrations (spherical aberration diagram, astigmatism diagram, distortion diagram, lateral chromatic aberration diagram, and lateral aberration diagram) at the time of focusing on infinity of the variable magnification optical system ZL1 according to the first example.
- (A) shows a wide-angle end state
- (b) shows an intermediate focal length state
- (c) shows a telephoto end state.
- FIG. 3 is a diagram illustrating various aberrations (spherical aberration diagram, astigmatism diagram, distortion diagram, lateral chromatic aberration diagram, and lateral aberration diagram) when the zoom optical system ZL1 according to the first example is in close focus.
- FIG. 4A is a wide-angle end state
- FIG. 4B is an intermediate focus.
- the distance state, (c) shows the telephoto end state.
- FNO is the F number
- NA is the numerical aperture
- A is the half field angle (unit: °) with respect to each image height
- H0 is the object height.
- d indicates the d-line
- g indicates the aberration at the g-line.
- those without these descriptions show aberrations at the d-line.
- the value of the F number corresponding to the maximum aperture is shown.
- the numerical aperture value corresponding to the maximum aperture is shown.
- the solid line indicates the sagittal image plane
- the broken line indicates the meridional image plane.
- variable magnification optical system ZL1 has various aberrations from the wide-angle end state to the telephoto end state, and from the infinite focus state to the close-up focus state. It can be seen that it has a good optical performance. Further, it can be seen that the image formation performance is high at the time of image blur correction.
- variable magnification optical system ZL (ZL2) includes a first lens group G1 having negative refractive power arranged in order from the object side, and a first lens group having positive refractive power. 2 lens group G2, 3rd lens group G3 which has negative refractive power, and 4th lens group G4 which has positive refractive power.
- the first lens group G1 is composed of a negative meniscus lens L11 having a concave surface facing the image side, a biconcave lens L12, a biconcave lens L13, and a biconvex lens L14 arranged in order from the object side.
- the negative meniscus lens L11 is a glass mold aspheric lens in which both lens surfaces are aspherical.
- the biconcave lens L12 is a glass mold aspheric lens having an aspheric lens surface on the object side.
- the second lens group G2 includes a twenty-first lens group G21 having a positive refractive power and a twenty-second lens group G22 having a positive refractive power, which are arranged in order from the object side.
- the twenty-first lens group G21 includes a biconvex lens L21 arranged in order from the object side, and a cemented lens of a negative meniscus lens L22 having a concave surface facing the image side and a positive meniscus lens L23 having a convex surface facing the object side.
- the 22nd lens group G22 is composed of a cemented lens composed of a biconvex lens L24 and a negative meniscus lens L25 having a concave surface directed toward the object side, which are arranged in order from the object side.
- the third lens group G3 includes a thirty-first lens group G31 having negative refractive power and a thirty-second lens group G32 having negative refractive power, which are arranged in order from the object side.
- the thirty-first lens group G31 is composed of a negative meniscus lens L31 arranged in order from the object side and having a concave surface directed toward the object side, and a biconvex lens L32.
- the thirty-second lens group G32 is composed of a cemented lens which is arranged in order from the object side and includes a biconcave lens L33 and a positive meniscus lens L34 having a convex surface directed toward the object side.
- the positive meniscus lens L34 is a glass mold aspheric lens having an aspheric lens surface on the image side.
- the fourth lens group G4 includes a biconvex lens L41, a cemented lens of a biconvex lens L42 and a biconcave lens L43, and a cemented lens of a biconvex lens L44 and a biconcave lens L45, which are arranged in order from the object side.
- the biconcave lens L45 is a glass mold aspheric lens having an aspheric lens surface on the image side.
- An aperture stop S is provided between the second lens group G2 and the third lens group G3, and the aperture stop S constitutes the third lens group G3.
- the zooming from the wide-angle end state to the telephoto end state is performed by changing each lens group interval (the interval between the first lens group G1 and the second lens group G2, the interval between the second lens group G2 and the third lens group G3,
- the first lens group G1 is once moved to the image side and then moved to the object side so that the distance between the third lens group G3 and the fourth lens group G4 changes), and the second lens group G2 is moved to the object side.
- the third lens group G3 is moved to the object side, and the fourth lens group G4 is moved to the object side.
- the aperture stop S is moved to the object side integrally with the third lens group G3.
- Focusing from infinity to a close object is performed by moving the 21st lens group G21 to the image side.
- image blur correction on the image plane I is performed by moving the thirty-second lens group G32 as a vibration-proof lens group VR so as to have a component perpendicular to the optical axis.
- the image stabilization coefficient ratio of the amount of image movement on the imaging surface to the amount of movement of the moving lens group in shake correction
- K rotational blurring at an angle ⁇ is used.
- the thirty-first lens group G31 located on the object side of the thirty-second lens group G32 is fixed at the time of image blur correction.
- the image stabilization coefficient in the wide-angle end state, is ⁇ 0.64 and the focal length is 16.40 mm. Therefore, the image stabilization lens group VR for correcting the rotational blur of 0.81 degrees is used.
- the amount of movement is -0.36 mm.
- the image stabilization coefficient In the intermediate focal length state, the image stabilization coefficient is ⁇ 0.72, and the focal length is 23.50 mm. Therefore, the movement amount of the image stabilization lens group VR for correcting the rotation blur of 0.68 degrees is ⁇ 0. .39 mm.
- the image stabilization coefficient In the telephoto end state, the image stabilization coefficient is ⁇ 0.95 and the focal length is 34.00 mm. Therefore, the movement amount of the image stabilization lens group VR for correcting the rotational blur of 0.57 degrees is ⁇ 0. 35 mm.
- Table 2 shows the values of each item in the second example.
- Surface numbers 1 to 32 in Table 2 correspond to the optical surfaces m1 to m32 shown in FIG.
- FIG. 6 is a diagram illustrating various aberrations (spherical aberration diagram, astigmatism diagram, distortion diagram, lateral chromatic aberration diagram, and lateral aberration diagram) of the zoom optical system ZL2 according to the second example when focusing on infinity.
- (A) shows a wide-angle end state
- (b) shows an intermediate focal length state
- (c) shows a telephoto end state.
- FIG. 7 is a diagram illustrating various aberrations (spherical aberration diagram, astigmatism diagram, distortion diagram, lateral chromatic aberration diagram, and lateral aberration diagram) when the zoom optical system ZL2 according to the second example is in close focus.
- FIG. 8 is a lateral aberration diagram when image blur correction is performed at the time of focusing on infinity of the variable magnification optical system ZL2 according to the second example, where (a) is a wide-angle end state, and (b) is an intermediate focus.
- the distance state, (c) shows the telephoto end state.
- variable magnification optical system ZL2 has various aberrations from the wide-angle end state to the telephoto end state, and from the infinite focus state to the close-up focus state. It can be seen that it has a good optical performance. Further, it can be seen that the image formation performance is high at the time of image blur correction.
- variable magnification optical system ZL (ZL3) includes a first lens group G1 having negative refractive power arranged in order from the object side, and a first lens group G1 having positive refractive power.
- the first lens group G1 is composed of a negative meniscus lens L11 having a concave surface facing the image side, a biconcave lens L12, a biconcave lens L13, and a biconvex lens L14 arranged in order from the object side.
- the negative meniscus lens L11 is a glass mold aspheric lens in which both lens surfaces are aspherical.
- the biconcave lens L12 is a glass mold aspheric lens having an aspheric lens surface on the object side.
- the second lens group G2 includes a twenty-first lens group G21 having a positive refractive power and a twenty-second lens group G22 having a positive refractive power, which are arranged in order from the object side.
- the twenty-first lens group G21 includes a biconvex lens L21 arranged in order from the object side, and a cemented lens of a negative meniscus lens L22 having a concave surface facing the image side and a positive meniscus lens L23 having a convex surface facing the object side.
- the 22nd lens group G22 includes a biconvex lens L24.
- the third lens group G3 includes a thirty-first lens group G31 having a positive refractive power and a thirty-second lens group G32 having a negative refractive power, which are arranged in order from the object side.
- the thirty-first lens group G31 is composed of a negative meniscus lens L31 arranged in order from the object side and having a concave surface directed toward the object side, and a biconvex lens L32.
- the thirty-second lens group G32 is composed of a cemented lens which is arranged in order from the object side and includes a biconcave lens L33 and a positive meniscus lens L34 having a convex surface directed toward the object side.
- the positive meniscus lens L34 is a glass mold aspheric lens having an aspheric lens surface on the image side.
- the fourth lens group G4 includes a biconvex lens L41, a cemented lens of a biconvex lens L42 and a biconcave lens L43, and a cemented lens of a biconvex lens L44 and a biconcave lens L45, which are arranged in order from the object side.
- the biconcave lens L45 is a glass mold aspheric lens having an aspheric lens surface on the image side.
- An aperture stop S is provided between the second lens group G2 and the third lens group G3, and the aperture stop S constitutes the third lens group G3.
- the zooming from the wide-angle end state to the telephoto end state is performed by changing each lens group interval (the interval between the first lens group G1 and the second lens group G2, the interval between the second lens group G2 and the third lens group G3,
- the first lens group G1 is once moved to the image side and then moved to the object side so that the distance between the third lens group G3 and the fourth lens group G4 changes), and the second lens group G2 is moved to the object side.
- the third lens group G3 is moved to the object side, and the fourth lens group G4 is moved to the object side.
- the aperture stop S is moved to the object side integrally with the third lens group G3.
- Focusing from infinity to a close object is performed by moving the 21st lens group G21 to the image side.
- image blur correction on the image plane I is performed by moving the thirty-second lens group G32 as a vibration-proof lens group VR so as to have a component perpendicular to the optical axis.
- the image stabilization coefficient ratio of the amount of image movement on the imaging surface to the amount of movement of the moving lens group in shake correction
- K rotational blurring at an angle ⁇ is used.
- the thirty-first lens group G31 located on the object side of the thirty-second lens group G32 is fixed at the time of image blur correction.
- the image stabilization coefficient in the wide-angle end state, is ⁇ 0.63 and the focal length is 16.40 mm. Therefore, the image stabilization lens group VR for correcting the rotational blur of 0.81 degrees is used.
- the amount of movement is -0.37 mm.
- the image stabilization coefficient In the intermediate focal length state, the image stabilization coefficient is ⁇ 0.73 and the focal length is 23.95 mm. Therefore, the amount of movement of the image stabilization lens group VR for correcting the rotation blur of 0.67 degrees is ⁇ 0. .38 mm.
- the image stabilization coefficient In the telephoto end state, the image stabilization coefficient is ⁇ 0.95 and the focal length is 34.00 mm. Therefore, the movement amount of the image stabilization lens group VR for correcting the rotational blur of 0.57 degrees is ⁇ 0. 35 mm.
- Table 3 shows the values of each item in the third example.
- Surface numbers 1 to 31 in Table 3 correspond to the optical surfaces m1 to m31 shown in FIG.
- variable magnification optical system ZL3 satisfies the conditional expressions (1) to (4).
- FIG. 10 is a diagram illustrating various aberrations (spherical aberration diagram, astigmatism diagram, distortion diagram, lateral chromatic aberration diagram, and lateral aberration diagram) at the time of focusing on infinity of the variable magnification optical system ZL3 according to Example 3.
- (A) shows a wide-angle end state
- (b) shows an intermediate focal length state
- (c) shows a telephoto end state.
- FIG. 11 is a diagram showing various aberrations (spherical aberration diagram, astigmatism diagram, distortion diagram, lateral chromatic aberration diagram, and lateral aberration diagram) at the time of focusing on the close-up distance of the variable magnification optical system ZL3 according to Example 3.
- FIG. 12A is a wide-angle end state
- FIG. The distance state, (c) shows the telephoto end state.
- variable magnification optical system ZL3 has various aberrations from the wide-angle end state to the telephoto end state and from the infinite focus state to the close-up focus state. It can be seen that it has a good optical performance. Further, it can be seen that the image formation performance is high at the time of image blur correction.
- variable magnification optical system ZL (ZL4) includes a first lens group G1 having negative refractive power arranged in order from the object side, and a first lens group having positive refractive power. 2 lens group G2, 3rd lens group G3 which has negative refractive power, and 4th lens group G4 which has positive refractive power.
- the first lens group G1 is composed of a negative meniscus lens L11 having a concave surface facing the image side, a biconcave lens L12, a biconcave lens L13, and a biconvex lens L14 arranged in order from the object side.
- the negative meniscus lens L11 is a glass mold aspheric lens in which both lens surfaces are aspherical.
- the biconcave lens L12 is a glass mold aspheric lens having an aspheric lens surface on the object side.
- the second lens group G2 includes a twenty-first lens group G21 having a positive refractive power and a twenty-second lens group G22 having a positive refractive power, which are arranged in order from the object side.
- the twenty-first lens group G21 includes a biconvex lens L21 arranged in order from the object side, and a cemented lens of a negative meniscus lens L22 having a concave surface facing the image side and a positive meniscus lens L23 having a convex surface facing the object side.
- the 22nd lens group G22 includes a biconvex lens L24.
- the third lens group G3 includes a thirty-first lens group G31 having negative refractive power and a thirty-second lens group G32 having negative refractive power, which are arranged in order from the object side.
- the thirty-first lens group G31 is composed of a negative meniscus lens L31 arranged in order from the object side and having a concave surface directed toward the object side, and a biconvex lens L32.
- the thirty-second lens group G32 is composed of a cemented lens which is arranged in order from the object side and includes a biconcave lens L33 and a positive meniscus lens L34 having a convex surface directed toward the object side.
- the positive meniscus lens L34 is a glass mold aspheric lens having an aspheric lens surface on the image side.
- the fourth lens group G4 includes, in order from the object side, a biconvex lens L41, a cemented lens of a biconvex lens L42, a biconcave lens L43, and a biconvex lens L44, and a negative meniscus lens L45 having a concave surface facing the object side.
- the negative meniscus lens L45 is a glass mold aspheric lens having an aspheric lens surface on the image side.
- An aperture stop S is provided between the second lens group G2 and the third lens group G3, and the aperture stop S constitutes the third lens group G3.
- the zooming from the wide-angle end state to the telephoto end state is performed by changing each lens group interval (the interval between the first lens group G1 and the second lens group G2, the interval between the second lens group G2 and the third lens group G3,
- the first lens group G1 is once moved to the image side and then moved to the object side so that the distance between the third lens group G3 and the fourth lens group G4 changes), and the second lens group G2 is moved to the object side.
- the third lens group G3 is moved to the object side, and the fourth lens group G4 is moved to the object side.
- the aperture stop S is moved to the object side integrally with the third lens group G3.
- Focusing from infinity to a close object is performed by moving the 21st lens group G21 to the image side.
- image blur correction on the image plane I is performed by moving the thirty-second lens group G32 as a vibration-proof lens group VR so as to have a component perpendicular to the optical axis.
- the image stabilization coefficient ratio of the amount of image movement on the imaging surface to the amount of movement of the moving lens group in shake correction
- K rotational blurring at an angle ⁇ is used.
- the thirty-first lens group G31 located on the object side of the thirty-second lens group G32 is fixed at the time of image blur correction.
- the image stabilization lens group VR for correcting the rotational blur of 0.81 degrees is used.
- the amount of movement is -0.36 mm.
- the image stabilization coefficient is ⁇ 0.77 and the focal length is 23.50 mm. Therefore, the movement amount of the image stabilization lens group VR for correcting the rotation blur of 0.67 degrees is ⁇ 0. 37 mm.
- the image stabilization coefficient is ⁇ 0.99 and the focal length is 34.00 mm. Therefore, the amount of movement of the image stabilization lens group VR for correcting the rotational blur of 0.57 degrees is ⁇ 0. 34 mm.
- Table 4 shows the values of each item in the fourth example.
- Surface numbers 1 to 31 in Table 4 correspond to the optical surfaces m1 to m31 shown in FIG.
- variable magnification optical system ZL4 satisfies the conditional expressions (1) to (4).
- FIG. 14 is a diagram illustrating various aberrations (spherical aberration diagram, astigmatism diagram, distortion diagram, lateral chromatic aberration diagram, and lateral aberration diagram) of the zoom optical system ZL4 according to the fourth example when focusing on infinity.
- (A) shows a wide-angle end state
- (b) shows an intermediate focal length state
- (c) shows a telephoto end state.
- FIG. 15 is a diagram illustrating various aberrations (spherical aberration diagram, astigmatism diagram, distortion diagram, lateral chromatic aberration diagram, and lateral aberration diagram) when the zoom optical system ZL4 according to Example 4 is in close focus.
- FIG. 16A shows a wide-angle end state
- FIG. 16B shows an intermediate focal length state
- FIG. 16A and 16B are lateral aberration diagrams when image blur correction is performed at the time of focusing on infinity of the variable magnification optical system ZL4 according to the fourth example, where FIG. 16A is a wide-angle end state, and FIG. The distance state, (c) shows the telephoto end state.
- variable magnification optical system ZL4 has various aberrations from the wide-angle end state to the telephoto end state and from the infinite focus state to the close-up focus state. It can be seen that it has a good optical performance. Further, it can be seen that the image formation performance is high at the time of image blur correction.
- variable magnification optical system ZL (ZL5) includes a first lens group G1 having negative refractive power arranged in order from the object side, and a first lens group G1 having positive refractive power.
- the first lens group G1 is composed of a negative meniscus lens L11 having a concave surface facing the image side, a biconcave lens L12, a biconcave lens L13, and a biconvex lens L14 arranged in order from the object side.
- the negative meniscus lens L11 is a glass mold aspheric lens in which both lens surfaces are aspherical.
- the biconcave lens L12 is a glass mold aspheric lens having an aspheric lens surface on the object side.
- the second lens group G2 includes a twenty-first lens group G21 having a positive refractive power and a twenty-second lens group G22 having a positive refractive power, which are arranged in order from the object side.
- the twenty-first lens group G21 includes a biconvex lens L21 arranged in order from the object side, and a cemented lens of a negative meniscus lens L22 having a concave surface facing the image side and a positive meniscus lens L23 having a convex surface facing the object side.
- the 22nd lens group G22 is composed of a biconvex lens L24 and a biconcave lens L25 arranged in this order from the object side.
- the third lens group G3 includes a thirty-first lens group G31 having negative refractive power and a thirty-second lens group G32 having negative refractive power, which are arranged in order from the object side.
- the thirty-first lens group G31 includes a biconcave lens L31 and a biconvex lens L32 which are arranged in order from the object side.
- the thirty-second lens group G32 is composed of a cemented lens which is arranged in order from the object side and includes a biconcave lens L33 and a positive meniscus lens L34 having a convex surface directed toward the object side.
- the positive meniscus lens L34 is a glass mold aspheric lens having an aspheric lens surface on the image side.
- the fourth lens group G4 includes, in order from the object side, a cemented lens of a biconvex lens L41 and a negative meniscus lens L42 having a concave surface facing the object side, a negative meniscus lens L43 and a biconvex lens L44 having a concave surface facing the image side. And a negative meniscus lens L46 having a concave surface facing the object side, and a negative meniscus lens L46 having a concave surface facing the object side.
- the negative meniscus lens L46 is a glass mold aspheric lens having an aspheric lens surface on the image side.
- An aperture stop S is provided between the second lens group G2 and the third lens group G3, and the aperture stop S constitutes the third lens group G3.
- the zooming from the wide-angle end state to the telephoto end state is performed by changing each lens group interval (the interval between the first lens group G1 and the second lens group G2, the interval between the second lens group G2 and the third lens group G3,
- the first lens group G1 is once moved to the image side and then moved to the object side so that the distance between the third lens group G3 and the fourth lens group G4 changes), and the second lens group G2 is moved to the object side.
- the third lens group G3 is moved to the object side, and the fourth lens group G4 is moved to the object side.
- the aperture stop S is moved to the object side integrally with the third lens group G3.
- Focusing from infinity to a close object is performed by moving the 21st lens group G21 to the image side.
- image blur correction on the image plane I is performed by moving the thirty-second lens group G32 as a vibration-proof lens group VR so as to have a component perpendicular to the optical axis.
- the image stabilization coefficient ratio of the amount of image movement on the imaging surface to the amount of movement of the moving lens group in shake correction
- K rotational blurring at an angle ⁇ is used.
- the thirty-first lens group G31 located on the object side of the thirty-second lens group G32 is fixed at the time of image blur correction.
- the image stabilization lens group VR for correcting the rotation blur of 0.81 degrees is used.
- the amount of movement is -0.36 mm.
- the image stabilization coefficient is ⁇ 0.75 and the focal length is 23.50 mm. Therefore, the amount of movement of the image stabilization lens group VR for correcting the rotation blur of 0.68 degrees is ⁇ 0. 37 mm.
- the image stabilization coefficient is ⁇ 1.00 and the focal length is 34.00 mm, so that the amount of movement of the image stabilization lens group VR for correcting the rotation blur of 0.57 degrees is ⁇ 0. 33 mm.
- Table 5 shows the values of each item in the fifth example.
- Surface numbers 1 to 34 in Table 5 correspond to the optical surfaces m1 to m34 shown in FIG.
- variable magnification optical system ZL5 satisfies the conditional expressions (1) to (4).
- FIG. 18 is a diagram illustrating various aberrations (spherical aberration diagram, astigmatism diagram, distortion diagram, lateral chromatic aberration diagram, and lateral aberration diagram) at the time of focusing on infinity of the variable magnification optical system ZL5 according to Example 5.
- (A) shows a wide-angle end state
- (b) shows an intermediate focal length state
- (c) shows a telephoto end state.
- FIG. 19 is a diagram showing various aberrations (spherical aberration diagram, astigmatism diagram, distortion diagram, lateral chromatic aberration diagram, and lateral aberration diagram) at the time of focusing on a close distance of the variable magnification optical system ZL5 according to Example 5.
- FIG. 20 is a lateral aberration diagram when image blur correction is performed at the time of focusing on infinity of the variable magnification optical system ZL5 according to the fifth example.
- (A) is a wide-angle end state, and (b) is an intermediate focus.
- the distance state, (c) shows the telephoto end state.
- variable magnification optical system ZL5 has various aberrations from the wide-angle end state to the telephoto end state and from the infinite focus state to the close-up focus state. It can be seen that it has a good optical performance. Further, it can be seen that the image formation performance is high at the time of image blur correction.
- variable magnification optical system ZL (ZL6) includes a first lens group G1 having negative refractive power arranged in order from the object side, and a first lens group G1 having positive refractive power.
- the first lens group G1 is composed of a negative meniscus lens L11 having a concave surface facing the image side, a biconcave lens L12, a biconcave lens L13, and a biconvex lens L14 arranged in order from the object side.
- the negative meniscus lens L11 is a glass mold aspheric lens in which both lens surfaces are aspherical.
- the biconcave lens L12 is a glass mold aspheric lens having an aspheric lens surface on the object side.
- the second lens group G2 includes a twenty-first lens group G21 having a positive refractive power and a twenty-second lens group G22 having a positive refractive power, which are arranged in order from the object side.
- the twenty-first lens group G21 includes a biconvex lens L21 arranged in order from the object side, and a cemented lens of a negative meniscus lens L22 having a concave surface facing the image side and a positive meniscus lens L23 having a convex surface facing the object side.
- the 22nd lens group G22 includes a biconvex lens L24.
- the third lens group G3 includes a thirty-first lens group G31 having negative refractive power and a thirty-second lens group G32 having negative refractive power, which are arranged in order from the object side.
- the thirty-first lens group G31 includes a biconcave lens L31 and a biconvex lens L32 which are arranged in order from the object side.
- the thirty-second lens group G32 is composed of a cemented lens which is arranged in order from the object side and includes a biconcave lens L33 and a positive meniscus lens L34 having a convex surface directed toward the object side.
- the positive meniscus lens L34 is a glass mold aspheric lens having an aspheric lens surface on the image side.
- the fourth lens group G4 includes, in order from the object side, a cemented lens of a biconvex lens L41 and a negative meniscus lens L42 having a concave surface facing the object side, a negative meniscus lens L43 and a biconvex lens L44 having a concave surface facing the image side. And a negative meniscus lens L45 having a concave surface facing the object side.
- the negative meniscus lens L45 is a glass mold aspheric lens having an aspheric lens surface on the image side.
- An aperture stop S is provided between the second lens group G2 and the third lens group G3, and the aperture stop S constitutes the third lens group G3.
- the zooming from the wide-angle end state to the telephoto end state is performed by changing each lens group interval (the interval between the first lens group G1 and the second lens group G2, the interval between the second lens group G2 and the third lens group G3,
- the first lens group G1 is once moved to the image side and then moved to the object side so that the distance between the third lens group G3 and the fourth lens group G4 changes), and the second lens group G2 is moved to the object side.
- the third lens group G3 is moved to the object side, and the fourth lens group G4 is moved to the object side.
- the aperture stop S is moved to the object side integrally with the third lens group G3.
- Focusing from infinity to a close object is performed by moving the 21st lens group G21 to the image side.
- image blur correction on the image plane I is performed by moving the thirty-second lens group G32 as a vibration-proof lens group VR so as to have a component perpendicular to the optical axis.
- the image stabilization coefficient ratio of the amount of image movement on the imaging surface to the amount of movement of the moving lens group in shake correction
- K rotational blurring at an angle ⁇ is used.
- the thirty-first lens group G31 located on the object side of the thirty-second lens group G32 is fixed at the time of image blur correction.
- the image stabilization coefficient in the wide-angle end state, is ⁇ 0.64 and the focal length is 16.40 mm. Therefore, the image stabilization lens group VR for correcting the rotational blur of 0.81 degrees is used.
- the amount of movement is -0.36 mm.
- the image stabilization coefficient In the intermediate focal length state, the image stabilization coefficient is ⁇ 0.75 and the focal length is 23.50 mm. Therefore, the amount of movement of the image stabilization lens group VR for correcting the rotation blur of 0.68 degrees is ⁇ 0. 37 mm.
- the image stabilization coefficient In the telephoto end state, the image stabilization coefficient is ⁇ 0.99 and the focal length is 34.00 mm. Therefore, the amount of movement of the image stabilization lens group VR for correcting the rotational blur of 0.57 degrees is ⁇ 0. 34 mm.
- Table 6 shows the values of each item in the sixth example.
- Surface numbers 1 to 31 in Table 6 correspond to the optical surfaces m1 to m31 shown in FIG.
- Table 6 shows that the variable magnification optical system ZL6 according to the sixth example satisfies the conditional expressions (1) to (4).
- FIG. 22 is a diagram illustrating various aberrations (spherical aberration diagram, astigmatism diagram, distortion diagram, lateral chromatic aberration diagram, and lateral aberration diagram) at the time of focusing on infinity of the variable magnification optical system ZL6 according to Example 6.
- (A) shows a wide-angle end state
- (b) shows an intermediate focal length state
- (c) shows a telephoto end state.
- FIG. 23 is a diagram illustrating various aberrations (spherical aberration diagram, astigmatism diagram, distortion diagram, lateral chromatic aberration diagram, and lateral aberration diagram) when the zooming optical system ZL6 according to Example 6 is in close focus.
- FIG. 24A is a wide-angle end state
- FIG. The distance state, (c) shows the telephoto end state.
- variable magnification optical system ZL6 has various aberrations from the wide-angle end state to the telephoto end state, and from the infinite focus state to the close-up focus state. It can be seen that it has a good optical performance. Further, it can be seen that the image formation performance is high at the time of image blur correction.
- the zoom optical system ZL (ZL7) according to the seventh example includes a first lens group G1 having negative refractive power arranged in order from the object side, and a first lens group having positive refractive power. 2 lens group G2, 3rd lens group G3 which has negative refractive power, and 4th lens group G4 which has positive refractive power.
- the first lens group G1 includes a negative meniscus lens L11 having a concave surface facing the image side, a biconcave lens L12, a negative meniscus lens L13 having a concave surface facing the object side, and a biconvex lens L14, which are arranged in order from the object side.
- the negative meniscus lens L11 is a glass mold aspheric lens in which both lens surfaces are aspherical.
- the negative meniscus lens L13 is a glass mold aspheric lens having an aspheric lens surface on the image side.
- the second lens group G2 includes a twenty-first lens group G21 having a positive refractive power and a twenty-second lens group G22 having a positive refractive power, which are arranged in order from the object side.
- the twenty-first lens group G21 includes a negative meniscus lens L21 arranged in order from the object side and having a concave surface directed toward the image side, and a biconvex lens L21.
- the 22nd lens group G22 includes a biconvex lens L23.
- the third lens group G3 includes a thirty-first lens group G31 having negative refractive power and a thirty-second lens group G32 having negative refractive power, which are arranged in order from the object side.
- the thirty-first lens group G31 is composed of a negative meniscus lens L31 arranged in order from the object side and having a concave surface directed toward the object side, and a biconvex lens L32.
- the thirty-second lens group G32 is composed of a cemented lens which is arranged in order from the object side and includes a biconcave lens L33 and a positive meniscus lens L34 having a convex surface directed toward the object side.
- the positive meniscus lens L34 is a glass mold aspheric lens having an aspheric lens surface on the image side.
- the fourth lens group G4 includes, in order from the object side, a cemented lens of a biconvex lens L41 and a negative meniscus lens L42 having a concave surface facing the object side, a negative meniscus lens L43 and a biconvex lens L44 having a concave surface facing the image side. And a biconcave lens L45.
- the biconcave lens L45 is a glass mold aspheric lens having an aspheric lens surface on the image side.
- An aperture stop S is provided between the second lens group G2 and the third lens group G3, and the aperture stop S constitutes the third lens group G3.
- the zooming from the wide-angle end state to the telephoto end state is performed by changing each lens group interval (the interval between the first lens group G1 and the second lens group G2, the interval between the second lens group G2 and the third lens group G3,
- the first lens group G1 is once moved to the image side and then moved to the object side so that the distance between the third lens group G3 and the fourth lens group G4 changes), and the second lens group G2 is moved to the object side.
- the third lens group G3 is moved to the object side, and the fourth lens group G4 is moved to the object side.
- the aperture stop S is moved to the object side integrally with the third lens group G3.
- Focusing from infinity to a close object is performed by moving the 21st lens group G21 to the image side.
- image blur correction on the image plane I is performed by moving the thirty-second lens group G32 as a vibration-proof lens group VR so as to have a component perpendicular to the optical axis.
- the image stabilization coefficient ratio of the amount of image movement on the imaging surface to the amount of movement of the moving lens group in shake correction
- K rotational blurring at an angle ⁇ is used.
- the thirty-first lens group G31 located on the object side of the thirty-second lens group G32 is fixed at the time of image blur correction.
- the image stabilization coefficient in the wide-angle end state, is ⁇ 0.65 and the focal length is 16.40 mm. Therefore, the image stabilization lens group VR for correcting the rotational blur of 0.81 degrees is used.
- the amount of movement is -0.36 mm.
- the image stabilization coefficient In the intermediate focal length state, the image stabilization coefficient is ⁇ 0.75 and the focal length is 23.50 mm. Therefore, the amount of movement of the image stabilization lens group VR for correcting the rotation blur of 0.68 degrees is ⁇ 0. 37 mm.
- the image stabilization coefficient In the telephoto end state, the image stabilization coefficient is ⁇ 0.98 and the focal length is 34.00 mm. Therefore, the amount of movement of the image stabilization lens group VR for correcting the rotation blur of 0.57 degrees is ⁇ 0. 34 mm.
- Table 7 shows the values of each item in the seventh example.
- Surface numbers 1 to 30 in Table 7 correspond to the respective optical surfaces m1 to m30 shown in FIG.
- FIG. 26 is a diagram illustrating various aberrations (spherical aberration diagram, astigmatism diagram, distortion diagram, lateral chromatic aberration diagram, and lateral aberration diagram) at the time of focusing on infinity of the variable magnification optical system ZL7 according to Example 7.
- (A) shows a wide-angle end state
- (b) shows an intermediate focal length state
- (c) shows a telephoto end state.
- FIG. 27 is a diagram illustrating various aberrations (spherical aberration diagram, astigmatism diagram, distortion diagram, lateral chromatic aberration diagram, and lateral aberration diagram) when the zooming optical system ZL7 according to the seventh example is in close focus.
- FIG. 28 is a lateral aberration diagram when image blur correction is performed at the time of focusing on infinity of the variable magnification optical system ZL7 according to Example 7, where (a) is a wide-angle end state and (b) is an intermediate focus. The distance state, (c) shows the telephoto end state.
- variable magnification optical system ZL7 has excellent various aberrations from the wide-angle end state to the telephoto end state and from the infinite focus state to the close-up focus state. It can be seen that it has a good optical performance. Further, it can be seen that the image formation performance is high at the time of image blur correction.
- variable magnification optical system ZL (ZL8) includes a first lens group G1 having negative refractive power arranged in order from the object side, and a first lens group having positive refractive power. 2 lens group G2, 3rd lens group G3 which has negative refractive power, and 4th lens group G4 which has positive refractive power.
- the first lens group G1 is composed of a negative meniscus lens L11 having a concave surface facing the image side, a biconcave lens L12, a biconcave lens L13, and a biconvex lens L14 arranged in order from the object side.
- the negative meniscus lens L11 is a glass mold aspheric lens in which both lens surfaces are aspherical.
- the biconcave lens L12 is a glass mold aspheric lens having an aspheric lens surface on the object side.
- the second lens group G2 includes a twenty-first lens group G21 having a positive refractive power and a twenty-second lens group G22 having a positive refractive power, which are arranged in order from the object side.
- the twenty-first lens group G21 includes a biconvex lens L21 arranged in order from the object side, and a cemented lens of a negative meniscus lens L22 having a concave surface facing the image side and a positive meniscus lens L23 having a convex surface facing the object side.
- the 22nd lens group G22 is composed of a cemented lens composed of a biconvex lens L24 and a negative meniscus lens L25 having a concave surface directed toward the object side, which are arranged in order from the object side.
- the third lens group G3 includes a thirty-first lens group G31 having negative refractive power and a thirty-second lens group G32 having negative refractive power, which are arranged in order from the object side.
- the thirty-first lens group G31 includes a biconcave lens L31 and a biconvex lens L32 which are arranged in order from the object side.
- the thirty-second lens group G32 is composed of a cemented lens which is arranged in order from the object side and includes a biconcave lens L33 and a positive meniscus lens L34 having a convex surface directed toward the object side.
- the positive meniscus lens L34 is a glass mold aspheric lens having an aspheric lens surface on the image side.
- the fourth lens group G4 includes a biconvex lens L41, a cemented lens composed of a biconvex lens L42 and a biconcave lens L43, and a cemented bilens lens L44 and a negative meniscus lens L45 having a concave surface facing the object side, arranged in order from the object side. It consists of a lens.
- the negative meniscus lens L45 is a glass mold aspheric lens having an aspheric lens surface on the image side.
- An aperture stop S is provided between the second lens group G2 and the third lens group G3, and the aperture stop S constitutes the third lens group G3.
- the zooming from the wide-angle end state to the telephoto end state is performed by changing each lens group interval (the interval between the first lens group G1 and the second lens group G2, the interval between the second lens group G2 and the third lens group G3,
- the first lens group G1 is once moved to the image side and then moved to the object side so that the distance between the third lens group G3 and the fourth lens group G4 changes), and the second lens group G2 is moved to the object side.
- the third lens group G3 is moved to the object side, and the fourth lens group G4 is moved to the object side.
- the aperture stop S is moved to the object side integrally with the third lens group G3.
- Focusing from infinity to a close object is performed by moving the 21st lens group G21 to the image side.
- image blur correction on the image plane I is performed by moving the thirty-second lens group G32 as a vibration-proof lens group VR so as to have a component perpendicular to the optical axis.
- the image stabilization coefficient ratio of the amount of image movement on the imaging surface to the amount of movement of the moving lens group in shake correction
- K rotational blurring at an angle ⁇ is used.
- the thirty-first lens group G31 located on the object side of the thirty-second lens group G32 is fixed at the time of image blur correction.
- the image stabilization coefficient in the wide-angle end state, is ⁇ 0.94 and the focal length is 16.40 mm. Therefore, the image stabilization lens group VR for correcting the rotational blur of 0.81 degrees is used.
- the amount of movement is -0.25 mm.
- the image stabilization coefficient In the intermediate focal length state, the image stabilization coefficient is ⁇ 1.09 and the focal length is 24.50 mm. Therefore, the movement amount of the image stabilization lens group VR for correcting the rotation blur of 0.67 degrees is ⁇ 0. .26 mm.
- the image stabilization coefficient In the telephoto end state, the image stabilization coefficient is ⁇ 1.39 and the focal length is 34.00 mm. Therefore, the amount of movement of the image stabilization lens group VR for correcting the rotation blur of 0.57 degrees is ⁇ 0. 24 mm.
- Table 8 shows the values of each item in the eighth example.
- Surface numbers 1 to 32 in Table 8 correspond to the optical surfaces m1 to m32 shown in FIG.
- variable magnification optical system ZL8 satisfies the conditional expressions (1) to (4).
- FIG. 30 is a diagram illustrating various aberrations (spherical aberration diagram, astigmatism diagram, distortion diagram, lateral chromatic aberration diagram, and lateral aberration diagram) at the time of focusing on infinity of the variable magnification optical system ZL8 according to Example 8.
- (A) shows a wide-angle end state
- (b) shows an intermediate focal length state
- (c) shows a telephoto end state.
- FIG. 31 is a diagram showing various aberrations (spherical aberration diagram, astigmatism diagram, distortion diagram, lateral chromatic aberration diagram, and lateral aberration diagram) when the zooming optical system ZL8 according to Example 8 is in close focus.
- FIG. 32 is a lateral aberration diagram when image blur correction is performed at the time of focusing on infinity of the variable magnification optical system ZL8 according to Example 8, where (a) is a wide-angle end state and (b) is an intermediate focus. The distance state, (c) shows the telephoto end state.
- variable magnification optical system ZL8 has various aberrations from the wide-angle end state to the telephoto end state and from the infinite focus state to the close-up focus state. It can be seen that it has a good optical performance. Further, it can be seen that the image formation performance is high at the time of image blur correction.
- the zoom optical system ZL (ZL9) according to the ninth example includes a first lens group G1 having negative refractive power arranged in order from the object side, and a first lens group having positive refractive power. 2 lens group G2, 3rd lens group G3 which has negative refractive power, and 4th lens group G4 which has positive refractive power.
- the first lens group G1 is composed of a negative meniscus lens L11 having a concave surface facing the image side, a biconcave lens L12, a biconcave lens L13, and a biconvex lens L14 arranged in order from the object side.
- the negative meniscus lens L11 is a glass mold aspheric lens in which both lens surfaces are aspherical.
- the biconcave lens L12 is a glass mold aspheric lens having an aspheric lens surface on the object side.
- the second lens group G2 includes a twenty-first lens group G21 having a positive refractive power and a twenty-second lens group G22 having a positive refractive power, which are arranged in order from the object side.
- the twenty-first lens group G21 includes a biconvex lens L21 arranged in order from the object side, and a cemented lens of a negative meniscus lens L22 having a concave surface facing the image side and a positive meniscus lens L23 having a convex surface facing the object side.
- the 22nd lens group G22 is composed of a cemented lens composed of a biconvex lens L24 and a negative meniscus lens L25 having a concave surface directed toward the object side, which are arranged in order from the object side.
- the third lens group G3 includes a thirty-first lens group G31 having negative refractive power, a thirty-second lens group G32 having negative refractive power, and a thirty-third lens group having positive refractive power arranged in order from the object side.
- the thirty-first lens group G31 includes a biconcave lens L31 and a biconvex lens L32 which are arranged in order from the object side.
- the thirty-second lens group G32 is composed of a cemented lens which is arranged in order from the object side and includes a biconcave lens L33 and a positive meniscus lens L34 having a convex surface directed toward the object side.
- the thirty-third lens group G33 includes a positive meniscus lens L35 having a convex surface directed toward the object side.
- the positive meniscus lens L34 is a glass mold aspheric lens having an aspheric lens surface on the image side.
- the fourth lens group G4 includes a biconvex lens L41, a cemented lens composed of a biconvex lens L42 and a biconcave lens L43, and a cemented bilens lens L44 and a negative meniscus lens L45 having a concave surface facing the object side, arranged in order from the object side. It consists of a lens.
- the negative meniscus lens L45 is a glass mold aspheric lens having an aspheric lens surface on the image side.
- An aperture stop S is provided between the second lens group G2 and the third lens group G3, and the aperture stop S constitutes the third lens group G3.
- the zooming from the wide-angle end state to the telephoto end state is performed by changing each lens group interval (the interval between the first lens group G1 and the second lens group G2, the interval between the second lens group G2 and the third lens group G3,
- the first lens group G1 is once moved to the image side and then moved to the object side so that the distance between the third lens group G3 and the fourth lens group G4 changes), and the second lens group G2 is moved to the object side.
- the third lens group G3 is moved to the object side, and the fourth lens group G4 is moved to the object side.
- the aperture stop S is moved to the object side integrally with the third lens group G3.
- Focusing from infinity to a close object is performed by moving the 21st lens group G21 to the image side.
- image blur correction on the image plane I is performed by moving the thirty-second lens group G32 as a vibration-proof lens group VR so as to have a component perpendicular to the optical axis.
- the image stabilization coefficient ratio of the amount of image movement on the imaging surface to the amount of movement of the moving lens group in shake correction
- K rotational blurring at an angle ⁇ is used.
- the thirty-first lens group G31 and the thirty-third lens group G33 located on both sides of the thirty-second lens group G32 are fixed at the time of image blur correction.
- the image stabilization coefficient in the wide-angle end state, is ⁇ 1.10 and the focal length is 16.40 mm. Therefore, the image stabilization lens group VR for correcting the rotational blur of 0.81 degrees is used.
- the amount of movement is -0.21 mm.
- the image stabilization coefficient In the intermediate focal length state, the image stabilization coefficient is ⁇ 1.30, and the focal length is 24.50 mm. Therefore, the movement amount of the image stabilization lens group VR for correcting the rotation blur of 0.67 degrees is ⁇ 0. .22 mm.
- the image stabilization coefficient In the telephoto end state, the image stabilization coefficient is ⁇ 1.67 and the focal length is 34.00 mm. Therefore, the amount of movement of the image stabilization lens group VR for correcting the rotational blur of 0.57 degrees is ⁇ 0. 20 mm.
- Table 9 shows the values of each item in the ninth example.
- Surface numbers 1 to 34 in Table 9 correspond to the respective optical surfaces m1 to m34 shown in FIG.
- variable magnification optical system ZL9 satisfies the conditional expressions (1) to (4).
- FIG. 34 is a diagram illustrating various aberrations (spherical aberration diagram, astigmatism diagram, distortion diagram, lateral chromatic aberration diagram, and lateral aberration diagram) of the zoom optical system ZL9 according to Example 9 at the time of focusing on infinity.
- (A) shows a wide-angle end state
- (b) shows an intermediate focal length state
- (c) shows a telephoto end state.
- FIG. 35 is a diagram illustrating various aberrations (spherical aberration diagram, astigmatism diagram, distortion diagram, lateral chromatic aberration diagram, and lateral aberration diagram) when the zooming optical system ZL9 according to Example 9 is in close focus.
- FIG. 36 is a lateral aberration diagram when image blur correction is performed at the time of focusing on infinity of the variable magnification optical system ZL9 according to Example 9, where (a) is a wide-angle end state, and (b) is an intermediate focus. The distance state, (c) shows the telephoto end state.
- variable magnification optical system ZL9 has various aberrations from the wide-angle end state to the telephoto end state and from the infinite focus state to the close-up focus state. It can be seen that it has a good optical performance. Further, it can be seen that the image formation performance is high at the time of image blur correction.
- variable magnification optical system ZL (ZL10) includes a first lens group G1 having negative refractive power arranged in order from the object side, and a first lens group having positive refractive power.
- the first lens group G1 is composed of a negative meniscus lens L11 having a concave surface facing the image side, a biconcave lens L12, a biconcave lens L13, and a biconvex lens L14 arranged in order from the object side.
- the negative meniscus lens L11 is a glass mold aspheric lens in which both lens surfaces are aspherical.
- the biconcave lens L12 is a glass mold aspheric lens having an aspheric lens surface on the object side.
- the second lens group G2 includes a twenty-first lens group G21 having a positive refractive power and a twenty-second lens group G22 having a positive refractive power, which are arranged in order from the object side.
- the twenty-first lens group G21 includes a biconvex lens L21 arranged in order from the object side, and a cemented lens of a negative meniscus lens L22 having a concave surface facing the image side and a positive meniscus lens L23 having a convex surface facing the object side.
- the 22nd lens group G22 is composed of a cemented lens composed of a biconvex lens L24 and a negative meniscus lens L25 having a concave surface directed toward the object side, which are arranged in order from the object side.
- the third lens group G3 includes a thirty-first lens group G31 having a positive refractive power, a thirty-second lens group G32 having a negative refractive power, and a thirty-third lens group having a negative refractive power, which are arranged in order from the object side.
- the thirty-first lens group G31 includes a biconcave lens L31 and a biconvex lens L32 which are arranged in order from the object side.
- the thirty-second lens group G32 is composed of a cemented lens which is arranged in order from the object side and includes a biconcave lens L33 and a positive meniscus lens L34 having a convex surface directed toward the object side.
- the thirty-third lens group G33 includes a negative meniscus lens L35 having a concave surface directed toward the image side.
- the positive meniscus lens L34 is a glass mold aspheric lens having an aspheric lens surface on the image side.
- the fourth lens group G4 includes a biconvex lens L41, a cemented lens of a biconvex lens L42 and a biconcave lens L43, and a cemented lens of a biconvex lens L44 and a biconcave lens L45, which are arranged in order from the object side.
- the biconcave lens L45 is a glass mold aspheric lens having an aspheric lens surface on the image side.
- An aperture stop S is provided between the second lens group G2 and the third lens group G3, and the aperture stop S constitutes the third lens group G3.
- the zooming from the wide-angle end state to the telephoto end state is performed by changing each lens group interval (the interval between the first lens group G1 and the second lens group G2, the interval between the second lens group G2 and the third lens group G3,
- the first lens group G1 is once moved to the image side and then moved to the object side so that the distance between the third lens group G3 and the fourth lens group G4 changes), and the second lens group G2 is moved to the object side.
- the third lens group G3 is moved to the object side, and the fourth lens group G4 is moved to the object side.
- the aperture stop S is moved to the object side integrally with the third lens group G3.
- Focusing from infinity to a close object is performed by moving the 21st lens group G21 to the image side.
- image blur correction on the image plane I is performed by moving the thirty-second lens group G32 as a vibration-proof lens group VR so as to have a component perpendicular to the optical axis.
- the image stabilization coefficient ratio of the amount of image movement on the imaging surface to the amount of movement of the moving lens group in shake correction
- K rotational blurring at an angle ⁇ is used.
- the thirty-first lens group G31 and the thirty-third lens group G33 located on both sides of the thirty-second lens group G32 are fixed at the time of image blur correction.
- the image stabilization lens group VR for correcting the rotation blur of 0.81 degrees is used.
- the amount of movement is -0.33 mm.
- the anti-vibration coefficient is ⁇ 0.83 and the focal length is 23.50 mm. Therefore, the movement amount of the anti-vibration lens group VR for correcting the rotation blur of 0.68 degrees is ⁇ 0. 34 mm.
- the movement amount of the image stabilization lens group VR for correcting the rotational blur of 0.57 degrees is ⁇ 0. 30 mm.
- Table 10 shows the values of each item in the tenth embodiment.
- Surface numbers 1 to 34 in Table 10 correspond to the optical surfaces m1 to m34 shown in FIG.
- variable magnification optical system ZL10 satisfies the conditional expressions (1) to (4).
- FIG. 38 is a diagram illustrating various aberrations (spherical aberration diagram, astigmatism diagram, distortion diagram, lateral chromatic aberration diagram, and lateral aberration diagram) of the variable magnification optical system ZL10 according to Example 10 at the time of focusing on infinity.
- (A) shows a wide-angle end state
- (b) shows an intermediate focal length state
- (c) shows a telephoto end state.
- FIG. 39 is a diagram illustrating various aberrations (spherical aberration diagram, astigmatism diagram, distortion diagram, lateral chromatic aberration diagram, and lateral aberration diagram) when the zooming optical system ZL10 according to Example 10 is in close focus.
- FIG. 40 is a lateral aberration diagram when image blur correction is performed at the time of focusing on infinity of the variable magnification optical system ZL10 according to Example 10, where (a) is a wide-angle end state and (b) is an intermediate focus. The distance state, (c) shows the telephoto end state.
- variable magnification optical system ZL10 has various aberrations from the wide-angle end state to the telephoto end state, and from the infinite focus state to the close-up focus state. It can be seen that it has a good optical performance. Further, it can be seen that the image formation performance is high at the time of image blur correction.
- variable magnification optical system ZL (ZL11) includes a first lens group G1 having negative refractive power arranged in order from the object side, and a first lens group having positive refractive power. 2 lens group G2, 3rd lens group G3 which has negative refractive power, and 4th lens group G4 which has positive refractive power.
- the first lens group G1 is composed of a negative meniscus lens L11 having a concave surface facing the image side, a biconcave lens L12, a biconcave lens L13, and a biconvex lens L14 arranged in order from the object side.
- the negative meniscus lens L11 is a glass mold aspheric lens in which both lens surfaces are aspherical.
- the biconcave lens L12 is a glass mold aspheric lens having an aspheric lens surface on the object side.
- the second lens group G2 includes a twenty-first lens group G21 having a positive refractive power and a twenty-second lens group G22 having a positive refractive power, which are arranged in order from the object side.
- the twenty-first lens group G21 includes a biconvex lens L21 arranged in order from the object side, and a cemented lens of a negative meniscus lens L22 having a concave surface facing the image side and a positive meniscus lens L23 having a convex surface facing the object side.
- the 22nd lens group G22 is composed of a cemented lens composed of a biconvex lens L24 and a negative meniscus lens L25 having a concave surface directed toward the object side, which are arranged in order from the object side.
- the third lens group G3 includes a thirty-first lens group G31 having negative refractive power and a thirty-second lens group G32 having negative refractive power, which are arranged in order from the object side.
- the thirty-first lens group G31 includes a positive meniscus lens L31 having a convex surface directed toward the image side and a negative meniscus lens L32 having a concave surface directed toward the object side, which are arranged in order from the object side.
- the thirty-second lens group G32 is composed of a cemented lens which is arranged in order from the object side and includes a biconcave lens L33 and a positive meniscus lens L34 having a convex surface directed toward the object side.
- the positive meniscus lens L34 is a glass mold aspheric lens having an aspheric lens surface on the image side.
- the fourth lens group G4 includes a biconvex lens L41, a cemented lens of a biconvex lens L42 and a biconcave lens L43, and a cemented lens of a biconvex lens L44 and a biconcave lens L45, which are arranged in order from the object side.
- the biconcave lens L45 is a glass mold aspheric lens having an aspheric lens surface on the image side.
- An aperture stop S is provided between the second lens group G2 and the third lens group G3, and the aperture stop S constitutes the third lens group G3.
- the zooming from the wide-angle end state to the telephoto end state is performed by changing each lens group interval (the interval between the first lens group G1 and the second lens group G2, the interval between the second lens group G2 and the third lens group G3,
- the first lens group G1 is once moved to the image side and then moved to the object side so that the distance between the third lens group G3 and the fourth lens group G4 changes), and the second lens group G2 is moved to the object side.
- the third lens group G3 is moved to the object side, and the fourth lens group G4 is moved to the object side.
- the aperture stop S is moved to the object side integrally with the third lens group G3.
- Focusing from infinity to a close object is performed by moving the 21st lens group G21 to the image side.
- image blur correction on the image plane I is performed by moving the thirty-second lens group G32 as a vibration-proof lens group VR so as to have a component perpendicular to the optical axis.
- the image stabilization coefficient ratio of the amount of image movement on the imaging surface to the amount of movement of the moving lens group in shake correction
- K rotational blurring at an angle ⁇ is used.
- the thirty-first lens group G31 located on the object side of the thirty-second lens group G32 is fixed at the time of image blur correction.
- the image stabilization coefficient in the wide-angle end state, the image stabilization coefficient is ⁇ 0.70 and the focal length is 16.40 mm. Therefore, the image stabilization lens group VR for correcting the rotational blur of 0.81 degrees is used.
- the amount of movement is -0.33 mm.
- the image stabilization coefficient In the intermediate focal length state, the image stabilization coefficient is ⁇ 0.84 and the focal length is 23.50 mm. Therefore, the movement amount of the image stabilization lens group VR for correcting the rotation blur of 0.68 degrees is ⁇ 0. .33 mm.
- the image stabilization coefficient In the telephoto end state, the image stabilization coefficient is ⁇ 1.11 and the focal length is 34.00 mm. Therefore, the amount of movement of the image stabilization lens group VR for correcting the rotational blur of 0.57 degrees is ⁇ 0. 30 mm.
- Table 11 shows the values of each item in the eleventh embodiment.
- Surface numbers 1 to 32 in Table 11 correspond to the optical surfaces m1 to m32 shown in FIG.
- variable magnification optical system ZL11 satisfies the conditional expressions (1) to (4).
- FIG. 42 is a diagram illustrating various aberrations (spherical aberration diagram, astigmatism diagram, distortion diagram, lateral chromatic aberration diagram, and lateral aberration diagram) of the zoom optical system ZL11 according to the eleventh example at the time of focusing on infinity.
- (A) shows a wide-angle end state
- (b) shows an intermediate focal length state
- (c) shows a telephoto end state.
- FIG. 43 is a diagram illustrating various aberrations (spherical aberration diagram, astigmatism diagram, distortion diagram, lateral chromatic aberration diagram, and lateral aberration diagram) when the zooming optical system ZL11 according to Example 11 is in close focus.
- FIG. 44A is a wide-angle end state
- FIG. 44B is an intermediate focus.
- the distance state, (c) shows the telephoto end state.
- variable magnification optical system ZL11 has good various aberrations from the wide-angle end state to the telephoto end state and from the infinite focus state to the close-up focus state. It can be seen that it has a good optical performance. Further, it can be seen that the image formation performance is high at the time of image blur correction.
- variable magnification optical system ZL (ZL12) includes a first lens group G1 having negative refractive power arranged in order from the object side, and a first lens group having positive refractive power.
- the first lens group G1 is composed of a negative meniscus lens L11 having a concave surface facing the image side, a biconcave lens L12, a biconcave lens L13, and a biconvex lens L14 arranged in order from the object side.
- the negative meniscus lens L11 is a glass mold aspheric lens in which both lens surfaces are aspherical.
- the biconcave lens L12 is a glass mold aspheric lens having an aspheric lens surface on the object side.
- the second lens group G2 includes a twenty-first lens group G21 having a positive refractive power and a twenty-second lens group G22 having a positive refractive power, which are arranged in order from the object side.
- the twenty-first lens group G21 includes a biconvex lens L21 arranged in order from the object side, and a cemented lens of a negative meniscus lens L22 having a concave surface facing the image side and a positive meniscus lens L23 having a convex surface facing the object side.
- the 22nd lens group G22 is composed of a cemented lens composed of a biconvex lens L24 and a negative meniscus lens L25 having a concave surface directed toward the object side, which are arranged in order from the object side.
- the third lens group G3 includes a thirty-first lens group G31 having negative refractive power and a thirty-second lens group G32 having negative refractive power, which are arranged in order from the object side.
- the thirty-first lens group G31 is composed of a cemented lens that is arranged in order from the object side and includes a positive meniscus lens L31 having a convex surface facing the image side and a negative meniscus lens L32 having a concave surface facing the object side.
- the thirty-second lens group G32 is composed of a cemented lens which is arranged in order from the object side and includes a biconcave lens L33 and a positive meniscus lens L34 having a convex surface directed toward the object side.
- the positive meniscus lens L34 is a glass mold aspheric lens having an aspheric lens surface on the image side.
- the fourth lens group G4 includes a biconvex lens L41, a cemented lens of a biconvex lens L42 and a biconcave lens L43, and a cemented lens of a biconvex lens L44 and a biconcave lens L45, which are arranged in order from the object side.
- the biconcave lens L45 is a glass mold aspheric lens having an aspheric lens surface on the image side.
- An aperture stop S is provided between the second lens group G2 and the third lens group G3, and the aperture stop S constitutes the third lens group G3.
- the zooming from the wide-angle end state to the telephoto end state is performed by changing each lens group interval (the interval between the first lens group G1 and the second lens group G2, the interval between the second lens group G2 and the third lens group G3,
- the first lens group G1 is once moved to the image side and then moved to the object side so that the distance between the third lens group G3 and the fourth lens group G4 changes), and the second lens group G2 is moved to the object side.
- the third lens group G3 is moved to the object side, and the fourth lens group G4 is moved to the object side.
- the aperture stop S is moved to the object side integrally with the third lens group G3.
- Focusing from infinity to a close object is performed by moving the 21st lens group G21 to the image side.
- image blur correction on the image plane I is performed by moving the thirty-second lens group G32 as a vibration-proof lens group VR so as to have a component perpendicular to the optical axis.
- the image stabilization coefficient ratio of the amount of image movement on the imaging surface to the amount of movement of the moving lens group in shake correction
- K rotational blurring at an angle ⁇ is used.
- the thirty-first lens group G31 located on the object side of the thirty-second lens group G32 is fixed at the time of image blur correction.
- the image stabilization coefficient in the wide-angle end state, is ⁇ 0.67 and the focal length is 16.40 mm. Therefore, the image stabilization lens group VR for correcting the rotational blur of 0.81 degrees is used.
- the amount of movement is -0.35 mm.
- the image stabilization coefficient In the intermediate focal length state, the image stabilization coefficient is ⁇ 0.80 and the focal length is 23.50 mm. Therefore, the amount of movement of the image stabilization lens group VR for correcting the rotation blur of 0.68 degrees is ⁇ 0. .35 mm.
- the image stabilization coefficient In the telephoto end state, the image stabilization coefficient is -1.06 and the focal length is 34.00 mm, so the amount of movement of the image stabilization lens group VR for correcting 0.57 degree rotational blur is -0. 32 mm.
- Table 12 below shows values of various specifications in the twelfth embodiment.
- Surface numbers 1 to 31 in Table 12 correspond to the optical surfaces m1 to m31 shown in FIG.
- variable magnification optical system ZL12 satisfies the conditional expressions (1) to (4).
- FIG. 46 is a diagram illustrating various aberrations (spherical aberration diagram, astigmatism diagram, distortion diagram, lateral chromatic aberration diagram, and lateral aberration diagram) when the variable magnification optical system ZL12 according to Example 12 is in focus at infinity.
- (A) shows a wide-angle end state
- (b) shows an intermediate focal length state
- (c) shows a telephoto end state.
- FIG. 47 is a diagram of various aberrations (spherical aberration diagram, astigmatism diagram, distortion diagram, lateral chromatic aberration diagram, and lateral aberration diagram) when the zooming optical system ZL12 according to Example 12 is in close focus.
- FIG. 48A is a wide-angle end state
- FIG. 48B shows the telephoto end state.
- variable magnification optical system ZL12 according to the twelfth example has various aberrations from the wide-angle end state to the telephoto end state, and from the infinite focus state to the close-up focus state. It can be seen that it has a good optical performance. Further, it can be seen that the image formation performance is high at the time of image blur correction.
- variable magnification optical system ZL (ZL13) includes a first lens group G1 having negative refractive power arranged in order from the object side, and a first lens group G1 having positive refractive power.
- the first lens group G1 is composed of a negative meniscus lens L11 having a concave surface facing the image side, a biconcave lens L12, a biconcave lens L13, and a biconvex lens L14 arranged in order from the object side.
- the negative meniscus lens L11 is a glass mold aspheric lens in which both lens surfaces are aspherical.
- the biconcave lens L12 is a glass mold aspheric lens having an aspheric lens surface on the object side.
- the second lens group G2 includes a twenty-first lens group G21 having a positive refractive power and a twenty-second lens group G22 having a positive refractive power, which are arranged in order from the object side.
- the twenty-first lens group G21 includes a biconvex lens L21 arranged in order from the object side, and a cemented lens of a negative meniscus lens L22 having a concave surface facing the image side and a positive meniscus lens L23 having a convex surface facing the object side.
- the 22nd lens group G22 is composed of a cemented lens composed of a biconvex lens L24 and a negative meniscus lens L25 having a concave surface directed toward the object side, which are arranged in order from the object side.
- the third lens group G3 includes a thirty-first lens group G31 having negative refractive power and a thirty-second lens group G32 having negative refractive power, which are arranged in order from the object side.
- the thirty-first lens group G31 is composed of a cemented lens of a biconcave lens L31 and a biconvex lens L32, which are arranged in order from the object side.
- the thirty-second lens group G32 is composed of a cemented lens which is arranged in order from the object side and includes a biconcave lens L33 and a positive meniscus lens L34 having a convex surface directed toward the object side.
- the positive meniscus lens L34 is a glass mold aspheric lens having an aspheric lens surface on the image side.
- the fourth lens group G4 includes a biconvex lens L41, a cemented lens of a biconvex lens L42 and a biconcave lens L43, and a cemented lens of a biconvex lens L44 and a biconcave lens L45, which are arranged in order from the object side.
- the biconcave lens L45 is a glass mold aspheric lens having an aspheric lens surface on the image side.
- An aperture stop S is provided between the second lens group G2 and the third lens group G3, and the aperture stop S constitutes the third lens group G3.
- the zooming from the wide-angle end state to the telephoto end state is performed by changing each lens group interval (the interval between the first lens group G1 and the second lens group G2, the interval between the second lens group G2 and the third lens group G3,
- the first lens group G1 is once moved to the image side and then moved to the object side so that the distance between the third lens group G3 and the fourth lens group G4 changes), and the second lens group G2 is moved to the object side.
- the third lens group G3 is moved to the object side, and the fourth lens group G4 is moved to the object side.
- the aperture stop S is moved to the object side integrally with the third lens group G3.
- Focusing from infinity to a close object is performed by moving the 21st lens group G21 to the image side.
- image blur correction on the image plane I is performed by moving the thirty-second lens group G32 as a vibration-proof lens group VR so as to have a component perpendicular to the optical axis.
- the image stabilization coefficient ratio of the amount of image movement on the imaging surface to the amount of movement of the moving lens group in shake correction
- K rotational blurring at an angle ⁇ is used.
- the thirty-first lens group G31 located on the object side of the thirty-second lens group G32 is fixed at the time of image blur correction.
- the image stabilization lens group VR for correcting the rotational blur of 0.81 degrees is used.
- the amount of movement is -0.33 mm.
- the anti-vibration coefficient is ⁇ 0.83 and the focal length is 23.50 mm. Therefore, the movement amount of the anti-vibration lens group VR for correcting the rotation blur of 0.68 degrees is ⁇ 0. 34 mm.
- the image stabilization coefficient is ⁇ 1.11 and the focal length is 34.00 mm. Therefore, the amount of movement of the image stabilization lens group VR for correcting the rotational blur of 0.57 degrees is ⁇ 0. 30 mm.
- Table 13 below shows values of various specifications in the thirteenth embodiment.
- Surface numbers 1 to 31 in Table 13 correspond to the optical surfaces m1 to m31 shown in FIG.
- FIG. 50 is a diagram illustrating various aberrations (spherical aberration diagram, astigmatism diagram, distortion diagram, lateral chromatic aberration diagram, and lateral aberration diagram) of the zoom optical system ZL13 according to Example 13 at the time of focusing on infinity.
- (A) shows a wide-angle end state
- (b) shows an intermediate focal length state
- (c) shows a telephoto end state.
- FIG. 51 is a diagram illustrating various aberrations (spherical aberration diagram, astigmatism diagram, distortion diagram, lateral chromatic aberration diagram, and lateral aberration diagram) when the zooming optical system ZL13 according to Example 13 is in close focus.
- FIG. 52 is a lateral aberration diagram when image blur correction is performed at the time of focusing on infinity of the variable magnification optical system ZL13 according to Example 13, where (a) is a wide-angle end state and (b) is an intermediate focus. The distance state, (c) shows the telephoto end state.
- variable magnification optical system ZL13 has good various aberrations from the wide-angle end state to the telephoto end state, and from the infinite focus state to the close-up focus state. It can be seen that it has a good optical performance. Further, it can be seen that the image formation performance is high at the time of image blur correction.
- the F value is smaller than about F3.5 from the wide-angle end state to the telephoto end state (preferably smaller than F2.8), and the F value is substantially reduced from the wide-angle end state to the telephoto end state.
- a variable magnification optical system that is constant, has a wide field angle of about 50 or more at a half field angle, and has various aberrations corrected satisfactorily can be realized.
- variable magnification optical system ZL As a numerical example of the variable magnification optical system ZL, a four-group configuration is shown, but the present invention is not limited to this, and can be applied to other group configurations (for example, five groups). Specifically, a configuration in which a lens or a lens group is added closest to the object side or a configuration in which a lens or a lens group is added closest to the image side may be used.
- the lens group refers to a portion having at least one lens separated by an air interval that changes at the time of zooming or focusing.
- variable magnification optical system ZL in order to focus from infinity to a short distance object, a part of the lens group, one entire lens group, or a plurality of lens groups is moved in the optical axis direction as a focusing lens group.
- a configuration may be adopted.
- such a focusing lens group can be applied to autofocus, and is also suitable for driving by an autofocus motor (for example, an ultrasonic motor).
- an autofocus motor for example, an ultrasonic motor.
- variable magnification optical system ZL either one of the entire lens group or the partial lens group is moved so as to have a component in a direction perpendicular to the optical axis, or rotated (oscillated) in an in-plane direction including the optical axis.
- a vibration-proof lens group that corrects image blur caused by camera shake may be used.
- a fixed lens may be disposed on the image side of the thirty-second lens group G32 during image stabilization.
- the lens surface may be formed as a spherical surface, a flat surface, or an aspherical surface.
- the lens surface is a spherical surface or a flat surface, lens processing and assembly adjustment are facilitated, and deterioration of optical performance due to processing and assembly adjustment errors can be prevented. Further, even when the image plane is deviated, there is little deterioration in drawing performance.
- the lens surface is an aspheric surface
- the aspheric surface is an aspheric surface by grinding, a glass mold aspheric surface made of glass with an aspheric shape, or a composite aspheric surface made of resin with an aspheric shape on the glass surface. Any aspherical surface may be used.
- the lens surface may be a diffractive surface, and the lens may be a gradient index lens (GRIN lens) or a plastic lens.
- GRIN lens gradient index lens
- the aperture stop S be disposed in the vicinity of the third lens group G3.
- a lens frame may be used instead of a member as an aperture stop.
- each lens surface may be provided with an antireflection film having a high transmittance in a wide wavelength region in order to reduce flare and ghost and achieve good optical performance with high contrast.
- variable magnification optical system ZL can have a variable magnification ratio of about twice.
- ZL ZL1 to ZL13
- Variable magnification optical system G1 First lens group G2 Second lens group G21 21st lens group (focusing lens group) G22 22nd lens group G3 3rd lens group G31 31st lens group G32 32nd lens group (anti-vibration lens group) G33 33rd lens group G4 4th lens group S Aperture stop I Image surface 1 Camera (optical equipment)
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Nonlinear Science (AREA)
- Lenses (AREA)
- Adjustment Of Camera Lenses (AREA)
Abstract
Description
本願は、2015年01月30日に出願された日本国特許出願2015-017910号に基づき優先権を主張し、その内容をここに援用する。
0.200 < f1/f3 < 0.900
但し、
f1:前記第1レンズ群の焦点距離、
f3:前記第3レンズ群の焦点距離。
0.200 < f1/f3 < 0.900
但し、
f1:前記第1レンズ群の焦点距離、
f3:前記第3レンズ群の焦点距離。
0.200 < f1/f3 < 0.900
但し、
f1:前記第1レンズ群の焦点距離、
f3:前記第3レンズ群の焦点距離。
0.200 < f1/f3 < 0.900
但し、
f1:前記第1レンズ群の焦点距離、
f3:前記第3レンズ群の焦点距離。
0.200 < f1/f3 < 0.900 …(1)
但し、
f1:第1レンズ群G1の焦点距離、
f3:第3レンズ群G3の焦点距離。
0.700 < f32/f3 < 2.500 …(2)
但し、
f32:第32レンズ群G32の焦点距離。
0.400 < f4/f2 < 1.600 …(3)
但し、
f4:第4レンズ群G4の焦点距離、
f2:第2レンズ群G2の焦点距離。
1.100 < A(T3.5)/A(T4.0) < 5.000 …(4)
但し、
A(T3.5):望遠端状態においてF/3.5のF値に対応する軸上光線が、第32レンズ群G32の最も像側のレンズ面に形成された非球面を通る点での非球面量、
A(T4.0):望遠端状態においてF/4.0のF値に対応する軸上光線が、第32レンズ群G32の最も像側のレンズ面に形成された非球面を通る点での非球面量。
なお、前記非球面量とは、非球面の光軸上での、近似球面に対する非球面のサグ量を光軸に沿って測った量をいう。
0.200 < f1/f3 < 0.900…(1)
但し、
f1:前記第1レンズ群の焦点距離、
f3:前記第3レンズ群の焦点距離。
0.200 < f1/f3 < 0.900 …(1)
但し、
f1:第1レンズ群G1の焦点距離、
f3:第3レンズ群G3の焦点距離。
X(y)=(y2/R)/{1+(1-κ×y2/R2)1/2}+A4×y4+A6×y6+A8×y8+A10×y10+A12×y12+A14×y14+A16×y16+A18×y18 …(a)
第1実施例について、図1~図4及び表1を用いて説明する。第1実施例に係る変倍光学系ZL(ZL1)は、図1に示すように、物体側から順に並んだ、負の屈折力を有する第1レンズ群G1と、正の屈折力を有する第2レンズ群G2と、負の屈折力を有する第3レンズ群G3と、正の屈折力を有する第4レンズ群G4とからなる。
[レンズ諸元]
面番号 R D nd νd
*1 141.63094 3.000 1.76690 46.9
*2 16.71640 12.038 1.00000
*3 -163.31283 1.700 1.76690 46.9
4 106.92575 2.420 1.00000
5 -163.11816 1.700 1.49700 81.7
6 54.83939 1.200 1.00000
7 48.77184 5.134 1.75520 27.6
8 -212.53934 (D8) 1.00000
9 45.70675 3.974 1.64769 33.7
10 -288.07145 0.100 1.00000
11 48.60693 1.000 1.84666 23.8
12 19.56306 4.835 1.60342 38.0
13 60.48377 (D13) 1.00000
14 50.48320 5.971 1.49700 81.7
15 -36.76255 1.400 1.84666 23.8
16 -56.36078 (D16) 1.00000
17 (開口絞り) 3.263 1.00000
18 -44.67424 1.300 1.90366 31.3
19 136.86704 0.100 1.00000
20 78.75412 3.763 1.84666 23.8
21 -61.79495 2.000 1.00000
22 -66.55193 1.300 1.80400 46.6
23 33.85946 3.577 1.80518 25.4
*24 166.11512 (D24) 1.00000
25 32.35576 7.398 1.49700 81.7
26 -47.64507 0.100 1.00000
27 44.76173 8.068 1.49700 81.7
28 -28.00000 1.500 1.74950 35.2
29 112.87980 0.500 1.00000
30 62.06564 6.433 1.49700 81.7
31 -60.00000 2.000 1.80610 41.0
*32 1756.27000 (D32) 1.00000
[非球面データ]
面 κ A4 A6 A8 A10
1 1.00000e+00 2.39893e-06 -3.02265e-09 -3.98490e-12 7.49728e-15
2 0.00000e+00 1.03248e-05 -2.60887e-09 1.01418e-10 -3.52377e-13
3 1.00000e+00 -2.78891e-06 8.09697e-10 3.72105e-11 -1.98773e-13
24 1.00000e+00 -1.69763e-06 -2.10001e-10 9.14225e-12 -1.74272e-14
32 1.00000e+00 1.63396e-05 8.55710e-09 1.48907e-11 9.87697e-15
[各種データ]
W M T
f 16.40 23.50 34.00
FNo 2.84 2.89 2.90
ω 53.9 40.5 30.1
Y 20.00 20.00 20.00
TL 159.619 155.850 159.619
BF 27.560 34.986 50.202
[可変間隔データ]
無限遠合焦時 至近距離合焦時
W M T W M T
D0 ∞ ∞ ∞ 334.20 337.97 334.20
β - - - -0.0459 -0.0653 -0.0958
f 16.40 23.50 34.00 - - -
D8 25.600 11.753 2.000 27.098 13.374 3.831
D13 5.686 5.686 5.686 4.188 4.065 3.855
D16 3.000 11.057 14.758 3.000 11.057 14.758
D24 12.000 6.595 1.200 12.000 6.595 1.200
D32 27.560 34.986 50.202 27.571 35.009 50.252
[レンズ群データ]
レンズ群 始面 焦点距離
第1レンズ群 1 -23.08
第2レンズ群 9 40.97
第21レンズ群 9 79.53
第22レンズ群 14 66.09
第3レンズ群 17 -51.06
第31レンズ群 17 -617.47
第32レンズ群 22 -58.65
第4レンズ群 25 37.98
[条件式対応値]
条件式(1) f1/f3 = 0.452
条件式(2) f32/f3 = 1.149
条件式(3) f4/f2 = 0.927
条件式(4) A(T3.5)/A(T4.0) = 1.740
第2実施例について、図5~図8及び表2を用いて説明する。第2実施例に係る変倍光学系ZL(ZL2)は、図5に示すように、物体側から順に並んだ、負の屈折力を有する第1レンズ群G1と、正の屈折力を有する第2レンズ群G2と、負の屈折力を有する第3レンズ群G3と、正の屈折力を有する第4レンズ群G4とからなる。
[レンズ諸元]
面番号 R D nd νd
*1 150.10753 3.000 1.76690 46.9
*2 16.71640 11.635 1.00000
*3 -200.00000 1.700 1.76690 46.9
4 110.26615 3.043 1.00000
5 -91.18897 1.700 1.49700 81.7
6 92.62695 1.200 1.00000
7 59.51795 4.893 1.75520 27.6
8 -144.55653 (D8) 1.00000
9 54.17771 3.853 1.57957 53.7
10 -168.15683 0.100 1.00000
11 48.15476 1.400 1.84666 23.8
12 20.82567 4.835 1.60342 38.0
13 71.98010 (D13) 1.00000
14 58.01895 5.140 1.51680 63.9
15 -52.48261 1.400 1.84666 23.8
16 -74.41904 (D16) 1.00000
17 (開口絞り) 3.263 1.00000
18 -43.11863 1.300 1.90265 35.7
19 -3362.00370 0.100 1.00000
20 104.17981 3.392 1.84666 23.8
21 -70.96939 2.000 1.00000
22 -123.26792 1.300 1.80400 46.6
23 39.25731 2.900 1.80518 25.4
*24 97.15002 (D24) 1.00000
25 33.14690 7.392 1.49700 81.7
26 -45.99196 0.100 1.00000
27 42.33821 8.071 1.49700 81.7
28 -28.00000 1.500 1.80100 34.9
29 51.31589 0.526 1.00000
30 39.34858 5.507 1.49700 81.7
31 -147.88723 2.000 1.80610 41.0
*32 527.01174 (D32) 1.00000
[非球面データ]
面 κ A4 A6 A8 A10
1 1.00000e+00 1.26673e-06 -8.06378e-10 -5.17432e-12 6.92202e-15
2 0.00000e+00 7.39970e-06 -1.69408e-09 8.62137e-11 -2.76050e-13
3 1.00000e+00 -3.24223e-06 -1.82950e-09 4.19496e-11 -1.68279e-13
24 1.00000e+00 -1.72282e-06 -2.38905e-09 2.61824e-11 -6.18766e-14
32 1.00000e+00 1.58498e-05 1.18507e-08 -1.55976e-11 3.21472e-14
[各種データ]
W M T
f 16.40 23.50 34.00
FNo 2.86 2.79 2.81
ω 53.8 40.1 29.9
Y 20.00 20.00 20.00
TL 159.618 154.244 156.368
BF 25.145 31.652 45.295
[可変間隔データ]
無限遠合焦時 至近距離合焦時
W M T W M T
D0 ∞ ∞ ∞ 340.38 345.76 343.63
β - - - -0.0449 -0.0637 -0.0931
f 16.40 23.50 34.00 - - -
D8 28.281 12.865 2.000 29.898 14.571 3.902
D13 5.918 5.918 5.918 4.301 4.212 4.016
D16 3.000 12.629 18.705 3.000 12.629 18.705
D24 14.025 7.930 1.200 14.025 7.930 1.200
D32 25.145 31.652 45.295 25.145 31.652 45.295
[レンズ群データ]
レンズ群 始面 焦点距離
第1レンズ群 1 -24.25
第2レンズ群 9 42.48
第21レンズ群 9 79.22
第22レンズ群 14 72.35
第3レンズ群 17 -64.54
第31レンズ群 17 -99999.00
第32レンズ群 22 -67.09
第4レンズ群 25 42.46
[条件式対応値]
条件式(1) f1/f3 = 0.376
条件式(2) f32/f3 = 1.039
条件式(3) f4/f2 = 1.000
条件式(4) A(T3.5)/A(T4.0) = 1.755
第3実施例について、図9~図12及び表3を用いて説明する。第3実施例に係る変倍光学系ZL(ZL3)は、図9に示すように、物体側から順に並んだ、負の屈折力を有する第1レンズ群G1と、正の屈折力を有する第2レンズ群G2と、負の屈折力を有する第3レンズ群G3と、正の屈折力を有する第4レンズ群G4とからなる。
[レンズ諸元]
面番号 R D nd νd
*1 163.30041 3.000 1.76690 46.9
*2 16.71640 11.632 1.00000
*3 -200.00000 1.722 1.76690 46.9
4 119.78033 3.168 1.00000
5 -79.22706 1.700 1.49700 81.7
6 124.43920 1.200 1.00000
7 62.39960 4.890 1.75520 27.6
8 -133.86420 (D8) 1.00000
9 48.51093 4.118 1.58313 59.4
10 -176.87394 0.100 1.00000
11 49.08121 1.400 1.84666 23.8
12 19.98762 4.835 1.60342 38.0
13 63.37128 (D13) 1.00000
14 52.68721 4.196 1.49700 81.7
15 -113.72899 (D15) 1.00000
16 (開口絞り) 3.263 1.00000
17 -41.35615 1.000 1.90265 35.7
18 -2033.84380 0.100 1.00000
19 95.41351 3.529 1.84666 23.8
20 -68.05697 2.000 1.00000
21 -115.66704 1.000 1.80400 46.6
22 41.08343 2.888 1.80518 25.4
*23 107.26614 (D23) 1.00000
24 33.80083 7.404 1.49700 81.7
25 -44.75974 0.100 1.00000
26 42.35968 8.006 1.56883 56.0
27 -28.00000 1.500 1.90366 31.3
28 37.91033 0.500 1.00000
29 36.97974 8.146 1.70000 48.1
30 -29.64467 2.000 1.80604 40.7
*31 60381.93200 (D31) 1.00000
[非球面データ]
面 κ A4 A6 A8 A10
1 1.00000e+00 1.11419e-06 2.52394e-10 -5.86932e-12 7.15071e-15
2 0.00000e+00 6.59539e-06 -1.62162e-09 8.28640e-11 -2.56086e-13
3 1.00000e+00 -3.78859e-06 -3.13736e-09 3.84551e-11 -1.62364e-13
23 1.00000e+00 -1.68070e-06 -2.52180e-09 2.06388e-11 -4.27009e-14
31 1.00000e+00 1.51955e-05 9.57967e-09 -1.60225e-13 -1.30459e-14
[各種データ]
W M T
f 16.40 23.95 34.00
FNo 2.83 2.81 2.87
ω 53.8 39.6 30.0
Y 20.00 20.00 20.00
TL 159.621 153.085 154.372
BF 24.417 31.945 45.425
[可変間隔データ]
無限遠合焦時 至近距離合焦時
W M T W M T
D0 ∞ ∞ ∞ 340.38 346.92 345.63
β - - - -0.0449 -0.0647 -0.0926
f 16.40 23.95 34.00 - - -
D8 29.641 12.756 2.000 31.359 14.586 4.042
D13 6.286 6.286 6.286 4.569 4.456 4.245
D15 3.000 11.881 16.064 3.000 11.881 16.064
D23 12.880 6.820 1.200 12.880 6.820 1.200
D31 24.417 31.945 45.425 24.417 31.945 45.425
[レンズ群データ]
レンズ群 始面 焦点距離
第1レンズ群 1 -24.96
第2レンズ群 9 43.65
第21レンズ群 9 83.13
第22レンズ群 14 73.06
第3レンズ群 16 -68.79
第31レンズ群 16 1918.75
第32レンズ群 21 -68.77
第4レンズ群 24 43.59
[条件式対応値]
条件式(1) f1/f3 = 0.363
条件式(2) f32/f3 = 1.000
条件式(3) f4/f2 = 0.999
条件式(4) A(T3.5)/A(T4.0) = 1.770
第4実施例について、図13~図16及び表4を用いて説明する。第4実施例に係る変倍光学系ZL(ZL4)は、図13に示すように、物体側から順に並んだ、負の屈折力を有する第1レンズ群G1と、正の屈折力を有する第2レンズ群G2と、負の屈折力を有する第3レンズ群G3と、正の屈折力を有する第4レンズ群G4とからなる。
[レンズ諸元]
面番号 R D nd νd
*1 158.26471 3.000 1.76690 46.9
*2 16.71640 12.506 1.00000
*3 -100.68692 1.700 1.76690 46.9
4 294.38156 2.036 1.00000
5 -112.13035 1.700 1.49700 81.7
6 85.46589 1.795 1.00000
7 62.15225 4.834 1.75520 27.6
8 -152.76455 (D8) 1.00000
9 51.34147 5.247 1.57957 53.7
10 -148.40876 0.100 1.00000
11 52.00686 1.400 1.84666 23.8
12 20.66855 4.835 1.60342 38.0
13 70.71894 (D13) 1.00000
14 43.27867 4.209 1.49700 81.7
15 -204.02511 (D15) 1.00000
16 (開口絞り) 3.263 1.00000
17 -48.97633 1.000 1.80400 46.6
18 -483.47840 0.100 1.00000
19 123.68660 2.687 1.84666 23.8
20 -137.51585 2.000 1.00000
21 -144.72303 1.000 1.80400 46.6
22 31.48383 3.234 1.80518 25.4
*23 87.19368 (D23) 1.00000
24 29.45649 7.615 1.49700 81.7
25 -43.56074 0.100 1.00000
26 57.11501 6.954 1.51680 63.9
27 -29.46690 2.000 1.90200 25.3
28 475.53687 5.530 1.58144 41.0
29 -30.77992 0.113 1.00000
30 -30.54254 2.000 1.80604 40.7
*31 -129.81226 (D31) 1.00000
[非球面データ]
面 κ A4 A6 A8 A10
1 1.00000e+00 3.21819e-09 2.61986e-09 -6.79605e-12 7.09724e-15
2 0.00000e+00 5.03399e-06 1.70596e-10 4.14609e-11 -1.35933e-13
3 1.00000e+00 -3.36707e-06 -3.58580e-09 1.66952e-11 -1.07642e-13
23 1.00000e+00 -2.16204e-06 -4.20097e-10 7.89073e-13 2.88415e-14
31 1.00000e+00 1.52012e-05 1.66306e-08 -6.37611e-12 6.87116e-14
[各種データ]
W M T
f 16.40 24.50 34.00
FNo 2.87 2.89 2.86
ω 53.8 39.5 30.3
Y 20.00 20.00 20.00
TL 159.618 152.183 154.500
BF 27.995 37.306 50.547
[可変間隔データ]
無限遠合焦時 至近距離合焦時
W M T W M T
D0 ∞ ∞ ∞ 340.38 347.82 345.50
β - - - -0.0449 -0.0661 -0.0926
f 16.40 24.50 34.00 - - -
D8 28.962 11.435 2.000 30.607 13.196 3.948
D13 6.055 6.055 6.055 4.410 4.294 4.107
D15 3.148 10.508 13.742 3.148 10.508 13.742
D23 12.502 5.922 1.200 12.502 5.922 1.200
D31 27.995 37.306 50.547 27.995 37.306 50.547
[レンズ群データ]
レンズ群 始面 焦点距離
第1レンズ群 1 -24.41
第2レンズ群 9 43.07
第21レンズ群 9 82.23
第22レンズ群 14 72.25
第3レンズ群 16 -59.50
第31レンズ群 16 -654.26
第32レンズ群 21 -67.24
第4レンズ群 24 40.98
[条件式対応値]
条件式(1) f1/f3 = 0.410
条件式(2) f32/f3 = 1.130
条件式(3) f4/f2 = 0.951
条件式(4) A(T3.5)/A(T4.0) = 1.770
第5実施例について、図17~図20及び表5を用いて説明する。第5実施例に係る変倍光学系ZL(ZL5)は、図17に示すように、物体側から順に並んだ、負の屈折力を有する第1レンズ群G1と、正の屈折力を有する第2レンズ群G2と、負の屈折力を有する第3レンズ群G3と、正の屈折力を有する第4レンズ群G4とからなる。
[レンズ諸元]
面番号 R D nd νd
*1 214.03011 3.000 1.76690 46.9
*2 16.71640 11.176 1.00000
*3 -149.10992 1.788 1.76690 46.9
4 166.28713 1.900 1.00000
5 -178.76254 1.700 1.49700 81.7
6 70.87126 1.200 1.00000
7 54.15316 5.068 1.75520 27.6
8 -156.77207 (D8) 1.00000
9 65.37596 4.042 1.57957 53.7
10 -86.40087 0.100 1.00000
11 32.87197 1.400 1.84666 23.8
12 18.04495 4.835 1.60342 38.0
13 43.87059 (D13) 1.00000
14 54.51621 4.209 1.62299 58.1
15 -64.87306 0.100 1.00000
16 -89.18990 1.000 1.84666 23.8
17 358.37492 (D17) 1.00000
18 (開口絞り) 3.263 1.00000
19 -36.39076 1.000 1.80400 46.6
20 437.40063 0.100 1.00000
21 79.71445 3.263 1.84666 23.8
22 -81.04803 2.000 1.00000
23 -98.92231 1.000 1.80400 46.6
24 45.07100 2.162 1.80518 25.4
*25 97.54115 (D25) 1.00000
26 27.56072 9.635 1.49700 81.7
27 -31.58623 1.500 1.90200 25.3
28 -39.39114 0.100 1.00000
29 38.11576 1.500 1.90366 31.3
30 37.86683 10.551 1.48749 70.3
31 -23.33658 1.500 1.95000 29.4
32 -64.06913 1.309 1.00000
33 -35.25758 2.000 1.80604 40.7
*34 -66.66667 (D34) 1.00000
[非球面データ]
面 κ A4 A6 A8 A10
1 1.00000e+00 -2.89628e-06 4.72674e-09 -4.61029e-12 5.30730e-15
2 0.00000e+00 -9.24789e-07 -4.40603e-09 4.08078e-11 -1.12994e-13
3 1.00000e+00 -2.38367e-06 -3.53563e-09 1.63815e-11 -1.35114e-13
25 1.00000e+00 -1.99178e-06 -6.94424e-09 4.45213e-11 -8.23905e-14
34 1.00000e+00 1.62225e-05 1.55144e-08 -2.37565e-11 6.72404e-14
[各種データ]
W M T
f 16.40 23.50 34.00
FNo 2.80 2.84 2.85
ω 53.3 40.0 29.8
Y 20.00 20.00 20.00
TL 153.337 148.994 152.660
BF 23.319 30.400 43.801
[可変間隔データ]
無限遠合焦時 至近距離合焦時
W M T W M T
D0 ∞ ∞ ∞ 346.66 351.01 347.34
β - - - -0.0438 -0.0625 -0.0917
f 16.40 23.50 34.00 - - -
D8 27.207 12.364 2.000 29.043 14.128 3.870
D13 6.261 6.261 6.261 4.424 4.496 4.391
D17 3.000 11.348 16.997 3.000 11.348 16.997
D25 11.150 6.221 1.200 11.150 6.221 1.200
D34 23.319 30.400 43.801 23.319 30.400 43.801
[レンズ群データ]
レンズ群 始面 焦点距離
第1レンズ群 1 -25.73
第2レンズ群 9 43.16
第21レンズ群 9 62.62
第22レンズ群 14 107.74
第3レンズ群 18 -51.17
第31レンズ群 18 -428.29
第32レンズ群 23 -60.70
第4レンズ群 26 33.85
[条件式対応値]
条件式(1) f1/f3 = 0.503
条件式(2) f32/f3 = 1.186
条件式(3) f4/f2 = 0.784
条件式(4) A(T3.5)/A(T4.0) = 1.801
第6実施例について、図21~図24及び表6を用いて説明する。第6実施例に係る変倍光学系ZL(ZL6)は、図21に示すように、物体側から順に並んだ、負の屈折力を有する第1レンズ群G1と、正の屈折力を有する第2レンズ群G2と、負の屈折力を有する第3レンズ群G3と、正の屈折力を有する第4レンズ群G4とからなる。
[レンズ諸元]
面番号 R D nd νd
*1 137.45565 3.000 1.76690 46.9
*2 16.71640 13.249 1.00000
*3 -200.00000 1.800 1.76690 46.9
4 140.79042 2.774 1.00000
5 -91.00641 1.700 1.49782 82.6
6 130.91139 1.200 1.00000
7 57.71328 4.309 1.75520 27.6
8 -391.18420 (D8) 1.00000
9 57.45469 3.759 1.57957 53.7
10 -136.04620 0.100 1.00000
11 63.50444 1.400 1.84666 23.8
12 22.40727 4.835 1.60342 38.0
13 125.90248 (D13) 1.00000
14 62.30210 4.178 1.49782 82.6
15 -89.59040 (D15) 1.00000
16 (開口絞り) 3.263 1.00000
17 -44.41333 1.000 1.80400 46.6
18 364.43292 0.100 1.00000
19 88.64581 3.070 1.84666 23.8
20 -128.41166 2.000 1.00000
21 -105.41745 1.000 1.80400 46.6
22 31.47150 3.668 1.80518 25.4
*23 117.62838 (D23) 1.00000
24 32.80510 9.246 1.49782 82.6
25 -24.51709 1.500 1.80440 39.6
26 -41.14254 0.100 1.00000
27 29.14204 1.500 1.80100 34.9
28 16.11298 14.456 1.49782 82.6
29 -33.61990 1.759 1.00000
30 -29.20249 2.000 1.80604 40.7
*31 -200.00000 (D31) 1.00000
[非球面データ]
面 κ A4 A6 A8 A10
1 1.00000e+00 7.98258e-07 1.75025e-09 -7.04385e-12 6.72581e-15
2 0.00000e+00 6.66652e-06 7.09047e-10 7.33490e-11 -2.47224e-13
3 1.00000e+00 -4.11933e-06 -1.72136e-09 1.46976e-11 -1.21272e-13
23 1.00000e+00 -1.67444e-06 -3.26939e-09 3.01005e-11 -7.44169e-14
31 1.00000e+00 9.56902e-06 -6.32519e-09 1.02300e-11 -1.47998e-13
[各種データ]
W M T
f 16.40 23.50 34.00
FNo 2.83 2.84 2.90
ω 53.7 40.5 30.2
Y 20.00 20.00 20.00
TL 159.619 156.147 159.217
BF 26.814 33.896 48.769
[可変間隔データ]
無限遠合焦時 至近距離合焦時
W M T W M T
D0 ∞ ∞ ∞ 340.38 343.85 340.78
β - - - -0.0449 -0.0640 -0.0937
f 16.40 23.50 34.00 - - -
D8 25.331 11.804 2.000 26.896 13.464 3.841
D13 5.722 5.722 5.722 4.157 4.061 3.881
D15 3.000 11.367 14.560 3.000 11.367 14.560
D23 11.785 6.392 1.200 11.785 6.392 1.200
D31 26.814 33.896 48.769 26.814 33.896 48.769
[レンズ群データ]
レンズ群 始面 焦点距離
第1レンズ群 1 -23.77
第2レンズ群 9 42.52
第21レンズ群 9 79.65
第22レンズ群 14 74.50
第3レンズ群 16 -52.47
第31レンズ群 16 -265.76
第32レンズ群 21 -69.99
第4レンズ群 24 37.73
[条件式対応値]
条件式(1) f1/f3 = 0.453
条件式(2) f32/f3 = 1.308
条件式(3) f4/f2 = 0.887
条件式(4) A(T3.5)/A(T4.0) = 1.769
第7実施例について、図25~図28及び表7を用いて説明する。第7実施例に係る変倍光学系ZL(ZL7)は、図25に示すように、物体側から順に並んだ、負の屈折力を有する第1レンズ群G1と、正の屈折力を有する第2レンズ群G2と、負の屈折力を有する第3レンズ群G3と、正の屈折力を有する第4レンズ群G4とからなる。
[レンズ諸元]
面番号 R D nd νd
*1 89.53266 3.000 1.76690 46.9
*2 16.72432 10.787 1.00000
3 -103.42713 1.784 1.80400 46.6
4 266.92556 4.198 1.00000
5 -43.32498 1.700 1.80400 46.6
*6 -166.61981 1.200 1.00000
7 48.05321 4.547 1.76182 26.6
8 -1018.15300 (D8) 1.00000
9 66.55625 1.400 1.84666 23.8
10 33.15012 0.277 1.00000
11 35.08798 5.384 1.61720 54.0
12 -90.24468 (D12) 1.00000
13 58.23067 4.702 1.49782 82.6
14 -78.69518 (D14) 1.00000
15 (開口絞り) 3.263 1.00000
16 -39.33451 1.699 1.78590 44.2
17 -379.78453 0.207 1.00000
18 250.67620 4.217 1.79504 28.7
19 -69.00176 2.000 1.00000
20 -119.36962 1.000 1.80400 46.6
21 29.64048 3.618 1.84666 23.8
*22 95.54478 (D22) 1.00000
23 42.27347 8.607 1.49782 82.6
24 -21.43355 1.500 1.79504 28.7
25 -33.97007 0.100 1.00000
26 29.11675 1.500 1.79952 42.1
27 16.33858 13.950 1.49782 82.6
28 -35.02520 0.709 1.00000
29 -37.48375 2.000 1.80604 40.7
*30 282.56902 (D30) 1.00000
[非球面データ]
面 κ A4 A6 A8 A10
1 1.08800e+00 -2.64980e-06 4.63837e-09 -3.36654e-12 1.72396e-15
A12 A14 A16 A18
0.00000e+00 0.00000e+00 0.00000e+00 0.00000e+00
面 κ A4 A6 A8 A10
2 0.00000e+00 -3.94168e-06 -3.42246e-08 2.20742e-10 -1.84647e-12
A12 A14 A16 A18
8.17320e-15 -2.21930e-17 2.97840e-20 -1.43740e-23
面 κ A4 A6 A8 A10
6 -1.26790e+00 1.17182e-05 2.20164e-08 -4.11096e-11 3.46520e-13
A12 A14 A16 A18
-7.77500e-16 7.88800e-19 0.00000e+00 0.00000e+00
面 κ A4 A6 A8 A10
22 8.87400e-01 -2.07608e-06 4.69073e-09 -5.95702e-12 0.00000e+00
A12 A14 A16 A18
0.00000e+00 0.00000e+00 0.00000e+00 0.00000e+00
面 κ A4 A6 A8 A10
30 -1.15047e+01 9.28220e-06 -1.69110e-08 6.56290e-11 -3.16077e-13
A12 A14 A16 A18
0.00000e+00 0.00000e+00 0.00000e+00 0.00000e+00
[各種データ]
W M T
f 16.40 23.50 34.00
FNo 2.89 2.90 2.91
ω 53.5 40.1 29.8
Y 20.00 20.00 20.00
TL 159.504 155.699 159.556
BF 47.304 54.495 68.721
[可変間隔データ]
無限遠合焦時 至近距離合焦時
W M T W M T
D0 ∞ ∞ ∞ 340.50 344.30 340.44
β - - - -0.0450 -0.0640 -0.0938
f 16.40 23.50 34.00 - - -
D8 48.548 34.984 25.548 50.022 36.571 27.315
D12 10.234 10.234 10.234 8.760 8.647 8.466
D14 11.330 19.385 24.208 11.330 19.385 24.208
D22 14.667 9.180 3.424 14.667 9.180 3.424
D30 47.304 54.495 68.721 47.304 54.495 68.721
[レンズ群データ]
レンズ群 始面 焦点距離
第1レンズ群 1 -22.87
第2レンズ群 9 40.73
第21レンズ群 9 86.25
第22レンズ群 13 68.00
第3レンズ群 15 -56.62
第31レンズ群 15 -408.50
第32レンズ群 20 -70.04
第4レンズ群 23 41.18
[条件式対応値]
条件式(1) f1/f3 = 0.404
条件式(2) f32/f3 = 1.237
条件式(3) f4/f2 = 1.011
条件式(4) A(T3.5)/A(T4.0) = 1.676
第8実施例について、図29~図32及び表8を用いて説明する。第8実施例に係る変倍光学系ZL(ZL8)は、図29に示すように、物体側から順に並んだ、負の屈折力を有する第1レンズ群G1と、正の屈折力を有する第2レンズ群G2と、負の屈折力を有する第3レンズ群G3と、正の屈折力を有する第4レンズ群G4とからなる。
[レンズ諸元]
面番号 R D nd νd
*1 118.11493 3.000 1.76690 46.9
*2 18.50197 15.261 1.00000
*3 -116.47550 1.700 1.76690 46.9
4 99.79733 2.879 1.00000
5 -111.98406 1.700 1.49700 81.7
6 50.34852 1.200 1.00000
7 48.79982 5.385 1.75520 27.6
8 -178.95096 (D8) 1.00000
9 65.28171 4.673 1.64769 33.7
10 -174.54058 0.100 1.00000
11 48.60726 1.000 1.84666 23.8
12 21.59175 4.835 1.60342 38.0
13 70.71902 (D13) 1.00000
14 52.04753 6.934 1.49700 81.7
15 -32.71006 1.400 1.84666 23.8
16 -47.15395 (D16) 1.00000
17 (開口絞り) 3.263 1.00000
18 -39.13637 1.300 1.90366 31.3
19 45.27882 0.100 1.00000
20 44.76406 4.806 1.84666 23.8
21 -47.87829 2.000 1.00000
22 -52.76760 1.300 1.80400 46.6
23 37.74504 3.318 1.80518 25.4
*24 146.86303 (D24) 1.00000
25 37.72449 7.793 1.49700 81.7
26 -39.14542 0.100 1.00000
27 98.93544 7.448 1.49700 81.7
28 -28.00000 1.500 1.74950 35.2
29 206.14892 0.500 1.00000
30 59.16975 6.270 1.49700 81.7
31 -61.60359 2.000 1.80610 41.0
*32 -100.28613 (D32) 1.00000
[非球面データ]
面 κ A4 A6 A8 A10
1 1.00000e+00 2.40178e-06 -8.95764e-13 -3.96805e-12 4.67920e-15
2 0.00000e+00 7.02698e-06 3.10152e-09 4.96276e-11 -1.36720e-13
3 1.00000e+00 -4.79760e-06 4.18425e-09 -2.12106e-11 -4.47103e-14
24 1.00000e+00 -2.30912e-06 3.28341e-10 7.64754e-12 -1.27403e-14
32 1.00000e+00 8.57278e-06 4.99626e-09 2.15301e-12 9.13336e-15
[各種データ]
W M T
f 16.40 24.50 34.00
FNo 2.82 2.94 2.87
ω 53.7 39.4 30.2
Y 20.00 20.00 20.00
TL 174.752 173.397 179.619
BF 39.319 46.677 60.163
[可変間隔データ]
無限遠合焦時 至近距離合焦時
W M T W M T
D0 ∞ ∞ ∞ 325.25 326.60 320.38
β - - - -0.0468 -0.0700 -0.0991
f 16.40 24.50 34.00 - - -
D8 24.760 10.384 2.515 26.284 12.053 4.367
D13 5.472 5.472 5.472 3.948 3.803 3.621
D16 3.000 13.194 18.503 3.000 13.194 18.503
D24 10.436 5.904 1.200 10.436 5.904 1.200
D32 39.319 46.677 60.163 39.319 46.677 60.163
[レンズ群データ]
レンズ群 始面 焦点距離
第1レンズ群 1 -22.80
第2レンズ群 9 39.76
第21レンズ群 9 82.98
第22レンズ群 14 60.60
第3レンズ群 17 -35.94
第31レンズ群 17 -203.19
第32レンズ群 22 -47.84
第4レンズ群 25 35.84
[条件式対応値]
条件式(1) f1/f3 = 0.635
条件式(2) f32/f3 = 1.331
条件式(3) f4/f2 = 0.901
条件式(4) A(T3.5)/A(T4.0) = 1.738
第9実施例について、図33~図36及び表9を用いて説明する。第9実施例に係る変倍光学系ZL(ZL9)は、図33に示すように、物体側から順に並んだ、負の屈折力を有する第1レンズ群G1と、正の屈折力を有する第2レンズ群G2と、負の屈折力を有する第3レンズ群G3と、正の屈折力を有する第4レンズ群G4とからなる。
[レンズ諸元]
面番号 R D nd νd
*1 120.11174 3.000 1.76690 46.9
*2 18.42119 13.635 1.00000
*3 -200.00000 1.800 1.76690 46.9
4 150.83577 3.187 1.00000
5 -71.42255 1.700 1.49700 81.7
6 48.32790 1.200 1.00000
7 47.89535 5.085 1.75520 27.6
8 -307.69627 (D8) 1.00000
9 78.39566 3.691 1.64769 33.7
10 -136.82539 0.100 1.00000
11 51.47266 1.000 1.84666 23.8
12 22.82138 4.835 1.60342 38.0
13 80.58386 (D13) 1.00000
14 49.88728 6.745 1.49700 81.7
15 -33.90595 1.400 1.84666 23.8
16 -49.81662 (D16) 1.00000
17 (開口絞り) 3.263 1.00000
18 -39.95312 1.300 1.90366 31.3
19 64.01831 0.100 1.00000
20 63.23831 4.284 1.84666 23.8
21 -44.37778 2.000 1.00000
22 -46.75918 1.300 1.80400 46.6
23 31.68983 3.419 1.80518 25.4
*24 114.35109 1.500 1.00000
25 63.56480 1.500 1.51680 63.9
26 86.50782 (D26) 1.00000
27 36.38921 7.703 1.49700 81.7
28 -41.41376 0.100 1.00000
29 124.18153 7.172 1.49700 81.7
30 -28.00000 1.500 1.74950 35.2
31 342.75794 0.500 1.00000
32 55.54397 6.114 1.49700 81.7
33 -70.97654 2.000 1.80610 41.0
*34 -134.68679 (D34) 1.00000
[非球面データ]
面 κ A4 A6 A8 A10
1 1.00000e+00 2.01132e-06 2.29749e-10 -3.77587e-12 4.80583e-15
2 0.00000e+00 6.00527e-06 7.03155e-09 1.86429e-11 -6.86773e-14
3 1.00000e+00 -4.66953e-06 2.82914e-09 -1.27985e-11 -4.47305e-14
24 1.00000e+00 -2.84048e-06 -2.44667e-11 8.10427e-12 8.75587e-16
34 1.00000e+00 9.32637e-06 4.56571e-09 4.94800e-12 6.31371e-15
[各種データ]
W M T
f 16.40 24.50 34.00
FNo 2.89 2.90 2.89
ω 53.7 39.7 30.5
Y 20.00 20.00 20.00
TL 175.322 172.751 179.617
BF 39.318 49.232 65.386
[可変間隔データ]
無限遠合焦時 至近距離合焦時
W M T W M T
D0 ∞ ∞ ∞ 324.68 327.25 320.38
β - - - -0.0469 -0.0698 -0.0992
f 16.40 24.50 34.00 - - -
D8 26.346 10.812 2.000 27.875 12.502 3.913
D13 5.609 5.609 5.609 4.079 3.918 3.695
D16 3.000 10.824 14.289 3.000 10.824 14.289
D26 9.915 5.142 1.200 9.915 5.142 1.200
D34 39.318 49.232 65.386 39.318 49.232 65.386
[レンズ群データ]
レンズ群 始面 焦点距離
第1レンズ群 1 -22.80
第2レンズ群 9 39.72
第21レンズ群 9 83.67
第22レンズ群 14 61.18
第3レンズ群 17 -37.17
第31レンズ群 17 -353.13
第32レンズ群 22 -40.79
第33レンズ群 25 453.66
第4レンズ群 27 36.44
[条件式対応値]
条件式(1) f1/f3 = 0.613
条件式(2) f32/f3 = 1.098
条件式(3) f4/f2 = 0.917
条件式(4) A(T3.5)/A(T4.0) = 1.741
第10実施例について、図37~図40及び表10を用いて説明する。第10実施例に係る変倍光学系ZL(ZL10)は、図37に示すように、物体側から順に並んだ、負の屈折力を有する第1レンズ群G1と、正の屈折力を有する第2レンズ群G2と、負の屈折力を有する第3レンズ群G3と、正の屈折力を有する第4レンズ群G4とからなる。
[レンズ諸元]
面番号 R D nd νd
*1 129.36523 3.000 1.76690 46.9
*2 16.79076 12.080 1.00000
*3 -168.11497 1.700 1.76690 46.9
4 102.22883 2.549 1.00000
5 -153.79234 1.700 1.49700 81.7
6 54.95054 1.200 1.00000
7 49.28856 5.114 1.75520 27.6
8 -214.29260 (D8) 1.00000
9 48.24357 3.936 1.64769 33.7
10 -231.49667 0.100 1.00000
11 54.48877 1.000 1.84666 23.8
12 20.36996 4.835 1.60342 38.0
13 71.07354 (D13) 1.00000
14 50.70089 6.202 1.49700 81.7
15 -35.23054 1.400 1.84666 23.8
16 -52.85379 (D16) 1.00000
17 (開口絞り) 3.263 1.00000
18 -42.64729 1.300 1.90366 31.3
19 144.87770 0.100 1.00000
20 79.01871 3.987 1.84666 23.8
21 -53.45918 2.000 1.00000
22 -59.87966 1.300 1.80400 46.6
23 32.05790 3.858 1.80518 25.4
*24 262.22395 1.000 1.00000
25 305.22046 1.200 1.84666 23.8
26 142.86447 (D26) 1.00000
27 32.29080 7.434 1.49700 81.7
28 -47.77121 0.100 1.00000
29 46.02060 8.089 1.49700 81.7
30 -28.00000 1.500 1.74950 35.2
31 155.18418 0.500 1.00000
32 64.16805 6.127 1.49700 81.7
33 -60.00000 2.000 1.80610 41.0
*34 683.11096 (D34) 1.00000
[非球面データ]
面 κ A4 A6 A8 A10
1 1.00000e+00 1.98429e-06 -2.63184e-09 -4.14768e-12 7.44360e-15
2 0.00000e+00 1.01727e-05 -3.85488e-09 9.89275e-11 -3.32301e-13
3 1.00000e+00 -2.57886e-06 7.52581e-10 3.57367e-11 -1.88585e-13
24 1.00000e+00 -1.77103e-06 3.37823e-10 8.82760e-12 -1.58340e-14
34 1.00000e+00 1.50115e-05 7.78737e-09 7.83699e-12 3.12873e-14
[各種データ]
W M T
f 16.40 23.50 34.00
FNo 2.86 2.87 2.87
ω 53.9 40.4 30.1
Y 20.00 20.00 20.00
TL 163.366 159.714 163.819
BF 28.480 35.847 51.082
[可変間隔データ]
無限遠合焦時 至近距離合焦時
W M T W M T
D0 ∞ ∞ ∞ 336.63 340.29 336.18
β - - - -0.0455 -0.0648 -0.0952
f 16.40 23.50 34.00 - - -
D8 25.600 11.684 2.000 27.112 13.329 3.862
D13 5.713 5.713 5.713 4.201 4.068 3.851
D16 3.000 11.142 15.251 3.000 11.142 15.251
D26 12.000 6.756 1.200 12.000 6.756 1.200
D34 28.480 35.847 51.082 28.480 35.847 51.082
[レンズ群データ]
レンズ群 始面 焦点距離
第1レンズ群 1 -23.03
第2レンズ群 9 40.62
第21レンズ群 9 81.58
第22レンズ群 14 63.92
第3レンズ群 17 -47.73
第31レンズ群 17 16447.87
第32レンズ群 22 -60.32
第33レンズ群 25 -318.30
第4レンズ群 27 37.41
[条件式対応値]
条件式(1) f1/f3 = 0.482
条件式(2) f32/f3 = 1.264
条件式(3) f4/f2 = 0.921
条件式(4) A(T3.5)/A(T4.0) = 1.727
第11実施例について、図41~図44及び表11を用いて説明する。第11実施例に係る変倍光学系ZL(ZL11)は、図41に示すように、物体側から順に並んだ、負の屈折力を有する第1レンズ群G1と、正の屈折力を有する第2レンズ群G2と、負の屈折力を有する第3レンズ群G3と、正の屈折力を有する第4レンズ群G4とからなる。
[レンズ諸元]
面番号 R D nd νd
*1 76.25229 3.000 1.76690 46.9
*2 16.79439 13.642 1.00000
*3 -200.00000 1.700 1.76690 46.9
4 75.03729 3.177 1.00000
5 -125.54845 1.700 1.49700 81.7
6 49.12256 1.200 1.00000
7 47.85420 5.237 1.75520 27.6
8 -213.44096 (D8) 1.00000
9 52.27459 3.866 1.64769 33.7
10 -201.45526 0.100 1.00000
11 47.65640 1.000 1.84666 23.8
12 20.62433 4.835 1.60342 38.0
13 51.97288 (D13) 1.00000
14 36.30851 6.943 1.49700 81.7
15 -40.01236 1.400 1.84666 23.8
16 -69.69258 (D16) 1.00000
17 (開口絞り) 3.263 1.00000
18 -66.13207 3.276 1.84666 23.8
19 -27.82464 0.125 1.00000
20 -27.46907 1.300 1.90366 31.3
21 -76.81907 1.500 1.00000
22 -75.57149 1.300 1.80400 46.6
23 27.59368 4.056 1.80518 25.4
*24 140.34715 (D24) 1.00000
25 32.39018 7.345 1.49700 81.7
26 -47.59659 0.100 1.00000
27 43.47080 8.151 1.49700 81.7
28 -28.00000 1.500 1.74950 35.2
29 204.99155 0.500 1.00000
30 91.74629 5.029 1.49700 81.7
31 -60.00000 2.000 1.80610 41.0
*32 738.89001 (D32) 1.00000
[非球面データ]
面 κ A4 A6 A8 A10
1 1.00000e+00 1.17818e-06 -3.05356e-09 -5.29641e-12 7.81141e-15
2 0.00000e+00 1.43376e-05 -6.00725e-09 1.01780e-10 -3.85607e-13
3 1.00000e+00 -1.46582e-06 3.27408e-09 1.79731e-11 -1.64353e-13
24 1.00000e+00 -1.60481e-06 1.85520e-09 -5.72587e-12 3.09532e-14
32 1.00000e+00 1.48992e-05 5.55835e-09 1.79775e-11 -2.72544e-15
[各種データ]
W M T
f 16.40 23.50 34.00
FNo 2.87 2.87 2.89
ω 53.9 41.0 30.4
Y 20.00 20.00 20.00
TL 161.620 155.892 159.779
BF 27.863 36.595 51.713
[可変間隔データ]
無限遠合焦時 至近距離合焦時
W M T W M T
D0 ∞ ∞ ∞ 338.38 344.11 340.22
β - - - -0.0452 -0.0640 -0.0939
f 16.40 23.50 34.00 - - -
D8 25.600 11.386 2.000 27.124 13.079 3.938
D13 5.914 5.914 5.914 4.390 4.221 3.976
D16 3.000 8.552 11.709 3.000 8.552 11.709
D24 12.000 6.202 1.200 12.000 6.202 1.200
D32 27.863 36.595 51.713 27.863 36.595 51.713
[レンズ群データ]
レンズ群 始面 焦点距離
第1レンズ群 1 -22.78
第2レンズ群 9 40.42
第21レンズ群 9 89.17
第22レンズ群 14 59.41
第3レンズ群 17 -49.31
第31レンズ群 17 -319.89
第32レンズ群 22 -60.56
第4レンズ群 25 37.74
[条件式対応値]
条件式(1) f1/f3 = 0.462
条件式(2) f32/f3 = 1.228
条件式(3) f4/f2 = 0.934
条件式(4) A(T3.5)/A(T4.0) = 1.717
第12実施例について、図45~図48及び表12を用いて説明する。第12実施例に係る変倍光学系ZL(ZL12)は、図45に示すように、物体側から順に並んだ、負の屈折力を有する第1レンズ群G1と、正の屈折力を有する第2レンズ群G2と、負の屈折力を有する第3レンズ群G3と、正の屈折力を有する第4レンズ群G4とからなる。
[レンズ諸元]
面番号 R D nd νd
*1 73.02420 3.000 1.76690 46.9
*2 16.71640 13.599 1.00000
*3 -200.00000 1.700 1.76690 46.9
4 73.09691 3.347 1.00000
5 -108.14702 1.700 1.49700 81.7
6 51.28745 1.200 1.00000
7 49.11741 5.183 1.75520 27.6
8 -189.76183 (D8) 1.00000
9 56.47818 3.732 1.64769 33.7
10 -178.32704 0.100 1.00000
11 49.11563 1.000 1.84666 23.8
12 21.22809 4.835 1.60342 38.0
13 54.71456 (D13) 1.00000
14 36.94523 6.983 1.49700 81.7
15 -38.41319 1.400 1.84666 23.8
16 -64.26981 (D16) 1.00000
17 (開口絞り) 3.263 1.00000
18 -68.05346 3.817 1.84666 23.8
19 -23.99004 1.300 1.90366 31.3
20 -88.38043 1.500 1.00000
21 -87.17709 1.300 1.80400 46.6
22 29.35808 3.856 1.80518 25.4
*23 129.21902 (D23) 1.00000
24 32.43952 7.387 1.49700 81.7
25 -47.46555 0.100 1.00000
26 46.53091 8.006 1.49700 81.7
27 -28.00000 1.500 1.74950 35.2
28 220.75671 0.500 1.00000
29 83.84132 5.139 1.49700 81.7
30 -60.00000 2.000 1.80610 41.0
*31 717.42318 (D31) 1.00000
[非球面データ]
面 κ A4 A6 A8 A10
1 1.00000e+00 1.32066e-06 -2.90839e-09 -6.61517e-12 8.98619e-15
2 0.00000e+00 1.50281e-05 -5.84806e-09 1.11035e-10 -4.24353e-13
3 1.00000e+00 -1.65518e-06 3.70661e-09 1.62176e-11 -1.68192e-13
23 1.00000e+00 -1.77911e-06 2.96559e-09 -9.96675e-12 3.84312e-14
31 1.00000e+00 1.45699e-05 4.88540e-09 2.17942e-11 -6.47982e-15
[各種データ]
W M T
f 16.40 23.50 34.00
FNo 2.90 2.90 2.92
ω 53.9 40.9 30.4
Y 20.00 20.00 20.00
TL 162.518 156.790 160.637
BF 28.551 37.243 52.408
[可変間隔データ]
無限遠合焦時 至近距離合焦時
W M T W M T
D0 ∞ ∞ ∞ 337.48 343.21 339.36
β - - - -0.0453 -0.0642 -0.0941
f 16.40 23.50 34.00 - - -
D8 25.600 11.376 2.000 27.126 13.075 3.946
D13 5.921 5.921 5.921 4.395 4.222 3.975
D16 3.000 8.539 11.662 3.000 8.539 11.662
D23 12.000 6.266 1.200 12.000 6.266 1.200
D31 28.551 37.243 52.408 28.551 37.243 52.408
[レンズ群データ]
レンズ群 始面 焦点距離
第1レンズ群 1 -22.68
第2レンズ群 9 40.15
第21レンズ群 9 91.07
第22レンズ群 14 58.08
第3レンズ群 17 -48.55
第31レンズ群 17 -233.28
第32レンズ群 21 -64.20
第4レンズ群 24 38.12
[条件式対応値]
条件式(1) f1/f3 = 0.467
条件式(2) f32/f3 = 1.322
条件式(3) f4/f2 = 0.949
条件式(4) A(T3.5)/A(T4.0) = 1.704
第13実施例について、図49~図52及び表13を用いて説明する。第13実施例に係る変倍光学系ZL(ZL13)は、図49に示すように、物体側から順に並んだ、負の屈折力を有する第1レンズ群G1と、正の屈折力を有する第2レンズ群G2と、負の屈折力を有する第3レンズ群G3と、正の屈折力を有する第4レンズ群G4とからなる。
[レンズ諸元]
面番号 R D nd νd
*1 74.98920 3.000 1.76690 46.9
*2 16.71640 13.914 1.00000
*3 -200.00000 1.700 1.76690 46.9
4 74.41837 3.254 1.00000
5 -113.97279 1.700 1.49700 81.7
6 51.25758 1.218 1.00000
7 48.46513 5.220 1.75520 27.6
8 -196.30825 (D8) 1.00000
9 51.66521 3.926 1.64769 33.7
10 -186.59307 0.100 1.00000
11 53.65429 1.000 1.84666 23.8
12 20.79244 4.835 1.60342 38.0
13 64.81668 (D13) 1.00000
14 39.17548 6.856 1.49700 81.7
15 -37.89813 1.400 1.84666 23.8
16 -61.51660 (D16) 1.00000
17 (開口絞り) 3.263 1.00000
18 -44.13789 1.300 1.90366 31.3
19 70.52747 4.187 1.84666 23.8
20 -53.20362 1.500 1.00000
21 -87.83350 1.300 1.80400 46.6
22 30.11849 3.688 1.80518 25.4
*23 116.01616 (D23) 1.00000
24 33.04611 7.402 1.49700 81.7
25 -46.18687 0.100 1.00000
26 45.89714 8.060 1.49700 81.7
27 -28.00000 1.500 1.74950 35.2
28 186.58716 0.500 1.00000
29 75.28743 5.930 1.49700 81.7
30 -60.00000 2.000 1.80610 41.0
*31 605.98400 (D31) 1.00000
[非球面データ]
面 κ A4 A6 A8 A10
1 1.00000e+00 1.05350e-06 -2.11331e-09 -6.68909e-12 8.48966e-15
2 0.00000e+00 1.45018e-05 -7.42095e-09 1.15879e-10 -4.19276e-13
3 1.00000e+00 -1.74349e-06 2.25437e-09 1.87840e-11 -1.73570e-13
23 1.00000e+00 -1.88970e-06 2.64440e-09 -8.43108e-12 3.31091e-14
31 1.00000e+00 1.40217e-05 4.02684e-09 2.45025e-11 -1.18730e-14
[各種データ]
W M T
f 16.40 23.50 34.00
FNo 2.87 2.85 2.90
ω 53.8 40.8 30.3
Y 20.00 20.00 20.00
TL 163.819 157.979 161.332
BF 28.666 36.898 51.921
[可変間隔データ]
無限遠合焦時 至近距離合焦時
W M T W M T
D0 ∞ ∞ ∞ 336.18 342.02 338.67
β - - - -0.0454 -0.0643 -0.0942
f 16.40 23.50 34.00 - - -
D8 25.600 11.405 2.000 27.104 13.047 3.854
D13 5.699 5.699 5.699 4.195 4.058 3.845
D16 3.000 8.714 11.658 3.000 8.714 11.658
D23 12.000 6.408 1.200 12.000 6.408 1.200
D31 28.666 36.898 51.921 28.666 36.898 51.921
[レンズ群データ]
レンズ群 始面 焦点距離
第1レンズ群 1 -22.86
第2レンズ群 9 39.48
第21レンズ群 9 85.05
第22レンズ群 14 59.11
第3レンズ群 17 -45.83
第31レンズ群 17 -227.86
第32レンズ群 21 -61.62
第4レンズ群 24 37.86
[条件式対応値]
条件式(1) f1/f3 = 0.499
条件式(2) f32/f3 = 1.344
条件式(3) f4/f2 = 0.959
条件式(4) A(T3.5)/A(T4.0) = 1.711
G1 第1レンズ群
G2 第2レンズ群
G21 第21レンズ群(合焦レンズ群)
G22 第22レンズ群
G3 第3レンズ群
G31 第31レンズ群
G32 第32レンズ群(防振レンズ群)
G33 第33レンズ群
G4 第4レンズ群
S 開口絞り
I 像面
1 カメラ(光学機器)
Claims (14)
- 物体側から順に並んだ、負の屈折力を有する第1レンズ群と、正の屈折力を有する第2レンズ群と、負の屈折力を有する第3レンズ群と、正の屈折力を有する第4レンズ群とを有し、
前記第1レンズ群と前記第2レンズ群との間隔と、前記第2レンズ群と前記第3レンズ群との間隔と、前記第3レンズ群と前記第4レンズ群との間隔を変化させることにより変倍を行い、
前記第3レンズ群は、防振レンズ群として像ブレを補正するために光軸と垂直方向の成分を持つように移動可能に構成した第32レンズ群と、前記第32レンズ群の物体側に配置された第31レンズ群とを有し、
前記第32レンズ群は、負の屈折力を有し、
以下の条件式を満足することを特徴とする変倍光学系。
0.200 < f1/f3 < 0.900
但し、
f1:前記第1レンズ群の焦点距離、
f3:前記第3レンズ群の焦点距離。 - 以下の条件式を満足することを特徴とする請求項1に記載の変倍光学系。
0.700 < f32/f3 < 2.500
但し、
f32:前記第32レンズ群の焦点距離。 - 以下の条件式を満足することを特徴とする請求項1又は2に記載の変倍光学系。
0.400 < f4/f2 < 1.600
但し、
f4:前記第4レンズ群の焦点距離、
f2:前記第2レンズ群の焦点距離。 - 前記第32レンズ群は、正レンズと負レンズとの接合レンズからなることを特徴とする請求項1~3のいずれか一項に記載の変倍光学系。
- 前記第31レンズ群は、負レンズと、正レンズとを有することを特徴とする請求項1~4のいずれか一項に記載の変倍光学系。
- 前記第31レンズ群は、物体側から順に並んだ、負レンズと、正レンズとからなることを特徴とする請求項1~5のいずれか一項に記載の変倍光学系。
- 前記第31レンズ群は、物体側から順に並んだ、負レンズと正レンズとの接合レンズからなることを特徴とする請求項1~6のいずれか一項に記載の変倍光学系。
- 前記第31レンズ群は、物体側から順に並んだ、正レンズと、負レンズとからなることを特徴とする請求項1~5のいずれか一項に記載の変倍光学系。
- 前記第31レンズ群は、物体側から順に並んだ、正レンズと負レンズとの接合レンズからなることを特徴とする請求項1~5及び8のいずれか一項に記載の変倍光学系。
- 前記第2レンズ群は、物体側から順に並んだ、正の屈折力を有する第21レンズ群と、正の屈折力を有する第22レンズ群とからなり、
前記第21レンズ群を合焦レンズ群として光軸方向に移動させることにより合焦を行うことを特徴とする請求項1~9のいずれか一項に記載の変倍光学系。 - 前記第32レンズ群の最も像側のレンズ面は、非球面であることを特徴とする請求項1~10のいずれか一項に記載の変倍光学系。
- 以下の条件式を満足することを特徴とする請求項11に記載の変倍光学系。
1.100 < A(T3.5)/A(T4.0) < 5.000
但し、
A(T3.5):望遠端状態においてF/3.5のF値に対応する軸上光線が、前記第32レンズ群の最も像側のレンズ面に形成された非球面を通る点での非球面量、
A(T4.0):望遠端状態においてF/4.0のF値に対応する軸上光線が、前記第32レンズ群の最も像側のレンズ面に形成された非球面を通る点での非球面量。
なお、前記非球面量とは、非球面の光軸上での、近似球面に対する非球面のサグ量を光軸に沿って測った量をいう。 - 請求項1~12のいずれか一項に記載の変倍光学系を搭載することを特徴とする光学機器。
- 物体側から順に並んだ、負の屈折力を有する第1レンズ群と、正の屈折力を有する第2レンズ群と、負の屈折力を有する第3レンズ群と、正の屈折力を有する第4レンズ群とを有し、前記第1レンズ群と前記第2レンズ群との間隔と、前記第2レンズ群と前記第3レンズ群との間隔と、前記第3レンズ群と前記第4レンズ群との間隔を変化させることにより変倍を行う変倍光学系の製造方法であって、
前記第3レンズ群は、防振レンズ群として像ブレを補正するために光軸と垂直方向の成分を持つように移動可能に構成した第32レンズ群と、前記第32レンズ群の物体側に配置された第31レンズ群とを有し、
前記第32レンズ群は、負の屈折力を有し、
以下の条件式を満足するように、
レンズ鏡筒内に各レンズを配置することを特徴とする変倍光学系の製造方法。
0.200 < f1/f3 < 0.900
但し、
f1:前記第1レンズ群の焦点距離、
f3:前記第3レンズ群の焦点距離。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2016572164A JP6414232B2 (ja) | 2015-01-30 | 2016-01-29 | 変倍光学系及び光学機器 |
CN201680017399.1A CN107407795B (zh) | 2015-01-30 | 2016-01-29 | 变倍光学系统以及光学设备 |
US15/545,704 US10606047B2 (en) | 2015-01-30 | 2016-01-29 | Variable magnification optical system, optical apparatus, and method for manufacturing variable magnification optical system |
EP16743506.4A EP3252516B1 (en) | 2015-01-30 | 2016-01-29 | Variable magnification optical system, optical instrument and method of manufacturing variable magnification optical system |
US16/752,686 US11415787B2 (en) | 2015-01-30 | 2020-01-26 | Variable magnification optical system, optical apparatus, and method for manufacturing variable magnification optical system |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2015017910 | 2015-01-30 | ||
JP2015-017910 | 2015-01-30 |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US15/545,704 A-371-Of-International US10606047B2 (en) | 2015-01-30 | 2016-01-29 | Variable magnification optical system, optical apparatus, and method for manufacturing variable magnification optical system |
US16/752,686 Division US11415787B2 (en) | 2015-01-30 | 2020-01-26 | Variable magnification optical system, optical apparatus, and method for manufacturing variable magnification optical system |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2016121903A1 true WO2016121903A1 (ja) | 2016-08-04 |
Family
ID=56543507
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2016/052596 WO2016121903A1 (ja) | 2015-01-30 | 2016-01-29 | 変倍光学系、光学機器及び変倍光学系の製造方法 |
Country Status (5)
Country | Link |
---|---|
US (2) | US10606047B2 (ja) |
EP (1) | EP3252516B1 (ja) |
JP (2) | JP6414232B2 (ja) |
CN (1) | CN107407795B (ja) |
WO (1) | WO2016121903A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2019049727A (ja) * | 2015-01-30 | 2019-03-28 | 株式会社ニコン | 変倍光学系 |
JP2020056963A (ja) * | 2018-10-04 | 2020-04-09 | キヤノン株式会社 | ズームレンズおよびそれを有する光学機器 |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPWO2016121939A1 (ja) * | 2015-01-30 | 2017-10-26 | 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 |
JP6942098B2 (ja) * | 2018-07-26 | 2021-09-29 | 富士フイルム株式会社 | 撮像レンズおよび撮像装置 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH11231220A (ja) * | 1998-02-13 | 1999-08-27 | Canon Inc | 防振機能を有した変倍光学系 |
JP2010170062A (ja) * | 2009-01-26 | 2010-08-05 | Nikon Corp | 変倍光学系、撮像装置、変倍光学系の製造方法 |
Family Cites Families (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3587272B2 (ja) * | 1995-06-01 | 2004-11-10 | 株式会社栃木ニコン | ズームレンズ |
JPH1039210A (ja) * | 1996-07-24 | 1998-02-13 | Nikon Corp | ズームレンズ |
JPH11174329A (ja) * | 1997-12-15 | 1999-07-02 | Canon Inc | 防振機能を有した変倍光学系 |
JP4720117B2 (ja) * | 2003-07-17 | 2011-07-13 | 株式会社ニコン | ズームレンズ |
JP5407119B2 (ja) * | 2007-06-29 | 2014-02-05 | 株式会社ニコン | 変倍光学系、光学装置、変倍光学系の変倍方法 |
JP5458477B2 (ja) * | 2007-06-29 | 2014-04-02 | 株式会社ニコン | 変倍光学系、光学装置、変倍光学系の変倍方法 |
US8259400B2 (en) * | 2009-01-26 | 2012-09-04 | Nikon Corporation | Zoom lens system, imaging apparatus, and method for manufacturing zoom lens system |
US8908273B2 (en) * | 2010-09-21 | 2014-12-09 | Nikon Corporation | Imaging lens, optical apparatus equipped therewith and method for manufacturing imaging lens |
US8537250B2 (en) * | 2010-11-02 | 2013-09-17 | Samsung Electronics Co., Ltd | Zoom lens and photographing apparatus |
WO2012086154A1 (ja) * | 2010-12-22 | 2012-06-28 | パナソニック株式会社 | ズームレンズ系、交換レンズ装置及びカメラシステム |
JP2013097143A (ja) * | 2011-10-31 | 2013-05-20 | Hoya Corp | ズームレンズ系 |
CN104412146B (zh) * | 2012-07-05 | 2016-12-14 | 富士胶片株式会社 | 变焦透镜和摄像装置 |
US9250425B2 (en) * | 2012-12-04 | 2016-02-02 | Samsung Electronics Co., Ltd. | Zoom lens and electronic device including the same |
JP5658811B2 (ja) * | 2013-01-25 | 2015-01-28 | パナソニックIpマネジメント株式会社 | ズームレンズ系、交換レンズ装置及びカメラシステム |
JP6045442B2 (ja) * | 2013-06-13 | 2016-12-14 | 富士フイルム株式会社 | ズームレンズおよび撮像装置 |
JP6045443B2 (ja) * | 2013-06-13 | 2016-12-14 | 富士フイルム株式会社 | ズームレンズおよび撮像装置 |
KR102052126B1 (ko) * | 2013-07-09 | 2019-12-05 | 삼성전자주식회사 | 줌 렌즈 및 이를 포함한 촬영 장치 |
CN105556368B (zh) * | 2013-08-02 | 2018-04-10 | 株式会社尼康 | 变焦镜头、光学设备和用于制造变焦镜头的方法 |
US9541768B2 (en) * | 2013-09-10 | 2017-01-10 | Samsung Electronics Co., Ltd. | Zoom lens and electronic apparatus |
US9915811B2 (en) * | 2013-11-01 | 2018-03-13 | Ricoh Imaging Company, Ltd. | Zoom lens system having first, second, and fourth lens groups which move during zooming |
JP6146870B2 (ja) * | 2014-04-25 | 2017-06-14 | 富士フイルム株式会社 | ズームレンズおよび撮像装置 |
JP6146871B2 (ja) * | 2014-04-25 | 2017-06-14 | 富士フイルム株式会社 | ズームレンズおよび撮像装置 |
JP6173975B2 (ja) * | 2014-06-18 | 2017-08-02 | 富士フイルム株式会社 | ズームレンズおよび撮像装置 |
JP6199261B2 (ja) * | 2014-08-28 | 2017-09-20 | 富士フイルム株式会社 | ズームレンズおよび撮像装置 |
JP2016126282A (ja) * | 2015-01-08 | 2016-07-11 | 株式会社タムロン | 広角ズームレンズ及び撮像装置 |
WO2016121903A1 (ja) | 2015-01-30 | 2016-08-04 | 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 |
-
2016
- 2016-01-29 WO PCT/JP2016/052596 patent/WO2016121903A1/ja active Application Filing
- 2016-01-29 CN CN201680017399.1A patent/CN107407795B/zh active Active
- 2016-01-29 US US15/545,704 patent/US10606047B2/en active Active
- 2016-01-29 JP JP2016572164A patent/JP6414232B2/ja active Active
- 2016-01-29 EP EP16743506.4A patent/EP3252516B1/en active Active
-
2018
- 2018-10-04 JP JP2018189284A patent/JP2019049727A/ja active Pending
-
2020
- 2020-01-26 US US16/752,686 patent/US11415787B2/en active Active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH11231220A (ja) * | 1998-02-13 | 1999-08-27 | Canon Inc | 防振機能を有した変倍光学系 |
JP2010170062A (ja) * | 2009-01-26 | 2010-08-05 | Nikon Corp | 変倍光学系、撮像装置、変倍光学系の製造方法 |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2019049727A (ja) * | 2015-01-30 | 2019-03-28 | 株式会社ニコン | 変倍光学系 |
US10606047B2 (en) | 2015-01-30 | 2020-03-31 | Nikon Corporation | Variable magnification optical system, optical apparatus, and method for manufacturing variable magnification optical system |
US11415787B2 (en) | 2015-01-30 | 2022-08-16 | Nikon Corporation | Variable magnification optical system, optical apparatus, and method for manufacturing variable magnification optical system |
JP2020056963A (ja) * | 2018-10-04 | 2020-04-09 | キヤノン株式会社 | ズームレンズおよびそれを有する光学機器 |
JP7158981B2 (ja) | 2018-10-04 | 2022-10-24 | キヤノン株式会社 | ズームレンズおよびそれを有する光学機器 |
Also Published As
Publication number | Publication date |
---|---|
US10606047B2 (en) | 2020-03-31 |
CN107407795B (zh) | 2020-07-24 |
EP3252516A1 (en) | 2017-12-06 |
JPWO2016121903A1 (ja) | 2017-10-12 |
EP3252516A4 (en) | 2018-10-24 |
CN107407795A (zh) | 2017-11-28 |
EP3252516B1 (en) | 2021-02-24 |
US11415787B2 (en) | 2022-08-16 |
US20200233192A1 (en) | 2020-07-23 |
US20180157015A1 (en) | 2018-06-07 |
JP2019049727A (ja) | 2019-03-28 |
JP6414232B2 (ja) | 2018-10-31 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP5581730B2 (ja) | 変倍光学系、光学装置 | |
JP5321608B2 (ja) | 変倍光学系、光学装置 | |
CN107430261B (zh) | 变倍光学系统以及光学设备 | |
JP6673420B2 (ja) | 変倍光学系、及び光学機器 | |
JP2019049727A (ja) | 変倍光学系 | |
JP2021105746A (ja) | 光学系および光学機器 | |
JP5919840B2 (ja) | ズームレンズ及び光学機器 | |
JP2020166263A (ja) | 変倍光学系 | |
JP2015022182A (ja) | ズームレンズ、光学機器及びズームレンズの製造方法 | |
JP6881522B2 (ja) | 変倍光学系、及び光学機器 | |
WO2014112176A1 (ja) | 変倍光学系、光学装置、変倍光学系の製造方法 | |
WO2015146176A1 (ja) | 変倍光学系、撮像装置及び変倍光学系の製造方法 | |
JP6525015B2 (ja) | 変倍光学系、及び光学機器 | |
JP7235127B2 (ja) | 光学系および光学機器 | |
WO2015136988A1 (ja) | ズームレンズ、光学装置、ズームレンズの製造方法 | |
JP6634683B2 (ja) | ズームレンズ及び光学機器 | |
JP5338865B2 (ja) | 変倍光学系、光学装置、変倍光学系の製造方法 | |
JP2017146394A (ja) | ズームレンズ及びそれを有する撮像装置 | |
JP2016156903A (ja) | ズームレンズ、光学機器及びズームレンズの製造方法 | |
JP6507480B2 (ja) | 変倍光学系および撮像装置 | |
JP6528355B2 (ja) | 変倍光学係および撮像装置 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 16743506 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2016572164 Country of ref document: JP Kind code of ref document: A |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
REEP | Request for entry into the european phase |
Ref document number: 2016743506 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 15545704 Country of ref document: US |