WO2004111698A1 - ズームレンズ、撮像装置及び撮像装置を備えるカメラ - Google Patents
ズームレンズ、撮像装置及び撮像装置を備えるカメラ Download PDFInfo
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- WO2004111698A1 WO2004111698A1 PCT/JP2004/008058 JP2004008058W WO2004111698A1 WO 2004111698 A1 WO2004111698 A1 WO 2004111698A1 JP 2004008058 W JP2004008058 W JP 2004008058W WO 2004111698 A1 WO2004111698 A1 WO 2004111698A1
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B15/00—Optical objectives with means for varying the magnification
- G02B15/14—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective
- G02B15/144—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective having four groups only
- G02B15/1441—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective having four groups only the first group being positive
- G02B15/144113—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective having four groups only the first group being positive arranged +-++
Definitions
- the present invention relates to a high-quality zoom lens and an optical device equipped with the same, such as a digital still camera or a digital video camera.
- the zoom lens suitable for the compact type includes, in order from the object side, a first lens group having negative power and a second lens group having positive power.
- a three-group zoom lens composed of a group and a third lens group having positive power. If these three-unit zoom lenses have a zoom ratio of about three times, it is possible to compose a zoom lens with a wide angle of view at the wide-angle end with a compact size.
- the F-number at the telephoto end is larger than the F-number at the wide-angle end, it is impossible to obtain a high-power zoom lens.
- a zoom lens that can obtain a relatively high magnification without increasing the F-number at the telephoto end compared to the F-number at the wide-angle end, for example, Japanese Patent Application Laid-Open No. 2000-1-13341 Japanese Patent Publication Nos. JP-A-2001-42215, JP-A-2002-72087, JP-A2002-1966241.
- a first lens group having a positive refractive index, a second lens group having a negative refractive index, and a positive refractive index There have been many proposals for a four-group zoom lens composed of a third lens group and a fourth lens group having a zoom lens. Disclosure of invention
- the zoom lens described in Japanese Patent Application Laid-Open No. 2000-131341 can obtain a zoom ratio of about 6 times, but has a large number of lenses. For this reason, it was difficult to store in a compact when not in use.
- the zoom lens described in Japanese Patent Publication No. JP-A-2001-424215 has a small number of lenses, and can be stored in a compact when not in use.
- the zoom ratio was as small as about three times.
- the zoom lenses described in Japanese Patent Application Laid-Open No. 2000-72087 and Japanese Patent Application Laid-Open No. 2002-196421 each have a zoom ratio of about three times. It was a thing.
- the purpose of the present invention is to provide an angle of view at the wide-angle end of 60 ° to 70 °, a zoom ratio of about 5 to 6 times, a small number of lenses, and a non-use lens when not in use.
- the zoom lens can be stored in a ⁇ ° box, has a high resolution, and is suitable for combination with the vibration compensation function of the zoom lens.
- An object of the present invention is to provide an imaging device such as a digital still camera, a video camera, and the like mounted thereon. The above objectives are achieved by the following zoom lenses. From the object side, in order from the object side, a first lens group of positive power, a second lens group of negative power, a third lens group of positive power, and a fourth lens group of positive power.
- a zoom lens with a lens group and a zoom lens When zooming from the wide-angle end to the telephoto end, the first lens group and the second lens group move along a locus convex toward the image side. However, the third lens group and the fourth lens group are characterized in that they move monotonously to the object side.
- the first lens group consists of one positive lens element or a set of negative lens elements and a junction lens of a positive lens element.
- the focal length of the entire lens system at the wide-angle end is f w
- the focal length of the first lens group is f G 1
- the change between the wide-angle end and the telephoto end is
- the ratio is Z
- the zoom ratio between the wide-angle end and the telephoto end is Z
- the thickness of the ith lens group (i is an integer) is di
- the thickness of each lens group is di.
- one positive power lens element of the fourth lens group consists of a biconvex lens.
- the lens element closest to the object side of the third lens group consists of a positive power lens
- the image side surface of the lens consists of a flat or concave surface.
- the third lens group includes a set of junction lens elements.
- the movement of the image due to the vibration of the zoom lens can be corrected by moving the third lens group vertically with respect to the optical axis.
- An imaging device that can convert an optical image of a subject into an electrical image signal and output it.
- An image sensor that converts an optical image of a subject formed by the camera into an electric signal is provided.
- the zoom lens includes, in order from the object side, a first lens group of positive power, A zoom lens having a second lens group of negative power, a third lens group of positive power, and a fourth lens group of positive power, and has a wide angle. During zooming from the end to the telephoto end, the first lens group and the second lens group move along a convex locus on the image side, and the third lens group and the fourth lens group are monotonous. It is characterized by moving to the object side.
- the first lens group consists of one positive lens element or a set of negative lens elements and a junction lens of the positive lens element.
- the focal length of the entire lens system at the wide-angle end is ⁇ w
- the focal length of the first lens group is f el
- the zoom ratio between the wide-angle end and the telephoto end is Z.
- the focal length of the entire lens system at the wide-angle end is f w
- the focal length of the fourth lens group is f G4
- the zoom ratio between the wide-angle end and the telephoto end is Z.
- the zoom ratio between the wide-angle end and the telephoto end is Z
- the thickness of the ith lens group (i is an integer) is di
- the total thickness of each lens group is d si
- one positive power lens element of the fourth lens group consists of a biconvex lens.
- the lens element closest to the object in the third lens group is a positive power lens, and the image side surface of the lens is a flat or concave surface.
- the third lens group includes a set of junction lens elements.
- the movement of the image due to the vibration of the zoom lens can be corrected by moving the third lens group vertically with respect to the optical axis.
- the camera is a camera capable of shooting an object and outputting the image as an electric image signal, and forming an optical image of the object so as to be variable in magnification.
- An imaging device that converts an optical image of a subject formed by the zoom lens into an electrical signal, and a zoom lens.
- a zoom lens having a first lens group, a second lens group with negative power, a third lens group with positive power, and a fourth lens group with positive power. Therefore, when zooming from the wide-angle end to the telephoto end, the first lens group and the second lens group move along a locus convex toward the image side, and the third lens group and the fourth lens group move.
- the lens group is characterized in that it moves monotonously to the object side.
- the camera is a digital still camera capable of acquiring a still image of a subject.
- the camera is a digital video camera capable of acquiring a moving image of a subject.
- FIG. 1 is a configuration diagram of a zoom lens according to Embodiment 1 of the present invention.
- FIG. 2 shows a zoom lens according to Embodiment 1 of the present invention.
- FIG. 4 is a diagram showing aberration.
- FIG. 3 is a configuration diagram of the zoom lens according to the second embodiment of the present invention.
- FIG. 4 is a diagram illustrating aberrations of the zoom lens according to the second embodiment of the present invention.
- FIG. 5 is a configuration diagram of a zoom lens according to the third embodiment of the present invention.
- FIG. 6 is a diagram illustrating aberrations of the zoom lens according to the third embodiment of the present invention.
- FIG. 7 is a diagram illustrating aberrations of the zoom lens according to the first embodiment of the present invention in the basic state at the telephoto end and in the vibration correction state of the zoom lens.
- FIG. 8 is a diagram illustrating aberrations of the zoom lens according to the second embodiment of the present invention in the basic state at the telephoto end and in the vibration correction state of the zoom lens.
- FIG. 9 is a diagram illustrating aberrations in the basic state of the telephoto end of the zoom lens and the vibration correction state of the zoom lens according to the third embodiment of the present invention.
- FIG. 10 is a schematic configuration diagram of a digital still camera according to an embodiment of the present invention.
- FIG. 11 is a schematic configuration diagram of a digital still camera when the zoom lens is retracted according to the embodiment of the present invention.
- BEST MODE FOR CARRYING OUT THE INVENTION hereinafter, embodiments of the present invention will be described with reference to the drawings and tables.
- FIG. 1 is a configuration diagram of a zoom lens according to Embodiment 1 of the present invention.
- FIG. 3 is a configuration diagram of a zoom lens according to Embodiment 2 of the present invention.
- FIG. 5 is a configuration diagram of a zoom lens according to Embodiment 3 of the present invention. Each figure shows a zoom lens that is in focus at infinity.
- the zoom lens according to each embodiment includes, in order from the object side, a first lens group G1 of positive power, a second lens group G2 of negative power, and a positive power. And a fourth lens group G4 of positive power.
- the zoom lens according to each of the embodiments has a configuration in which the first lens group G1 and the second lens group G2 have a locus convex toward the image side when zooming from the wide-angle end to the telephoto end. While drawing, move the U-turn while enlarging the distance between each other, and in response, squeeze the third lens group G3 and the fourth lens group G4 to A and It is moved monotonically to the object side.
- the straight line on the leftmost side of the figures represents the position of the image plane S, and the object side has an optical low-pass filer and the face of the image sensor.
- a flat plate P equivalent to a plate etc. is provided.
- the first lens group G1 includes one positive lens element.
- the first lens group G 1 comprises a positive meniscus lens element L1 with the convex surface facing the object side.
- the first lens group G1 is a negative meniscus lens having a convex surface facing the object side in order from the object side. It is composed of one bonded lens element formed by bonding the element L1 and a positive meniscus lens element L2 having a convex surface facing the object side.
- the second lens group G2 includes, in order from the object side, a negative meniscus lens element L2 (convex surface) having a convex surface facing the object side.
- L 3 negative meniscus lens element
- L 4 biconcave lens element
- L 5 positive meniscus lens element
- the third lens group G 3 includes, in order from the object side, a positive meniscus lens element L 5 (a convex surface facing the object side).
- L 6 is joined to a bi-convex lens element L 6 (L 7 in the third embodiment) and a bi-concave lens element L 7 (L 8 in the third embodiment). It is composed of a junction lens element.
- the fourth lens group G4 includes one bi-convex lens element L8 (L9 in the third embodiment).
- the first lens group G1 is composed of one positive power lens element L1. ing .
- the first lens group G1 is constituted by one junction lens element.
- the fourth lens group G4 includes one bi-convex positive power lens element (L8 and L9). By adopting this configuration, it is possible to reduce the size during collapse.
- the zoom lens according to each of the embodiments includes a cemented lens element in the third lens group G3.
- the three lenses constituting the third lens group G3 have high sensitivity to eccentricity and generate a large amount of aberration during eccentricity. Good. Therefore, the third lens group, G3, requires alignment when assembling the lens group.
- the zoom lens according to each embodiment has a concave surface on the image side of the lens L5 of the positive power closest to the object side of the third lens group G3. Therefore, the aligning work can be easily performed.
- the zoom lens in each embodiment has a third lens group G3 including one set of a junction lens element. The group can be easily adjusted.
- a first lens group of positive power In order from the object side, a first lens group of positive power, a second lens group of negative power, a third lens group of positive power, and a fourth lens group of positive power
- the fourth lens group is a zoom lens that moves monotonously to the object side (hereinafter referred to as “configuration A”), and sets the focal length of the entire lens system at the wide-angle end in infinity focusing.
- configuration A the focal length of the first lens group G 1 is f (;
- Conditional expression (1) relates to the focal length of the first lens group G1.
- the value exceeds the upper limit of the conditional expression (1) the power of the first lens group G1 becomes tight and the diameter of the front lens becomes large.
- the value goes below the lower limit of conditional expression (1) the first lens group G 1 becomes loose, and the entire lens diameter becomes longer, which makes downsizing difficult. .
- the above expression (1) can further enhance the above-mentioned effects by further defining the following range.
- Conditional expression (2) relates to the focal length of the fourth lens group G4. If the upper limit of conditional expression (2) is exceeded, the fourth lens group G4 will become tighter, making it difficult to correct for coma and astigmatism. On the other hand, when the value goes below the lower limit of the conditional expression (2), the power of the fourth lens group G4 becomes loose, and the angle of incidence on the image pickup surface becomes large, so that the telecentric slit becomes large. Worsens the workability.
- the above-mentioned expression (2) can further enhance the above-mentioned effects by further defining the following range.
- the zoom ratio between the wide-angle end and the telephoto end in the infinity in-focus state is Z
- the thickness of the i-th lens group (i is an integer) is di.
- conditional expression (3) relates to the thickness of each lens group. If the upper limit of conditional expression (3) is exceeded, it will be difficult to reduce the size of the entire lens system, and in particular, it will not be possible to shorten the total optical length when retracted. On the other hand, if the lower limit of conditional expression (3) is exceeded, it becomes difficult to correct aberrations over the entire zoom range. Note that the above expression (3) can further enhance the above effects by further defining the following range.
- the zoom lens according to each embodiment is generated by moving the third lens group G3 in a direction perpendicular to the optical axis, and is caused by camera shake of the photographer and the like. It is possible to correct the image inferiority due to the vibration of the zoom lens.
- the zoom lens having the above-described configuration A the third lens group is moved in a direction perpendicular to the optical axis to vibrate.
- the magnification of the i-th lens group at the telephoto end in the infinity in-focus state (i is an integer) is m (;; ⁇ ),
- conditional expression (4) relates to vibration correction
- the upper limit of this conditional expression is exceeded, the amount of eccentricity of the third lens group required to decenter the image by a predetermined amount will be too small. For this reason, it is difficult to translate the third lens group with high accuracy. As a result, pixel shifts due to vibrations due to camera shake during shooting cannot be reduced sufficiently, making it difficult to improve imaging characteristics during vibration correction. Become .
- the lower limit is exceeded, the amount of eccentricity of the third lens group required to decenter the image by a predetermined amount becomes excessively large. The change in the difference increases, and the imaging characteristics at the periphery of the image deteriorate. Let's do it.
- the image side of lens L 6 may be flat. When the surface is a flat surface, the centering work can be easily performed when alignment is required at the time of assembling the lens group, similarly to the concave surface.
- each lens group constituting each embodiment is a refraction lens that deflects incident light rays by refraction (that is, deflection is performed at an interface between media having different refractive indexes).
- Type lens a diffractive lens that deflects an incident light beam by diffraction
- a refraction / diffraction hybrid lens that deflects an incident light beam by a combination of diffraction and refraction effects
- Each lens group may be composed of a refractive index distribution type lens or the like which deflects the refractive index distribution.
- the optical path may be bent before, after, or in the middle of the zoom lens system.
- the bending position may be set as needed, and the camera can be made apparently thin by appropriate bending of the optical path.
- the configuration is shown in which a flat plate including an optical aperture filter disposed between the final surface of the zoom lens system and the imaging element S is arranged.
- low-pass filters include a birefringent low-pass filter made of quartz or the like whose crystal axis direction is adjusted, and the required light.
- a phase-type single-pass filter that achieves the mechanical cutoff frequency characteristics by the diffraction effect is applicable.
- the unit of the length in the table is mm.
- r is the radius of curvature
- d is the surface spacing
- n d and d are the refractive index and Abbe number at the d-line, respectively.
- the surface marked with * is an aspheric surface, and the aspheric shape is defined by the following equation (AS).
- Z is the surface shape with the optical axis as the origin, h is the distance from the optical axis, r is the radius of curvature, ⁇ is the conic constant, D, E, F,
- G is the fourth, sixth, eighth, and tenth order aspheric coefficients, respectively.
- FIG. 2 is a longitudinal aberration diagram of the zoom lens according to the first embodiment of the present invention in a state where the zoom lens is focused on infinity.
- FIG. 4 is a longitudinal aberration diagram of the zoom lens according to Example 2 of the present invention in an infinity in-focus condition.
- FIG. 6 is a longitudinal aberration diagram of the zoom lens according to the third embodiment of the present invention in an infinity in-focus condition.
- each longitudinal aberration diagram shows the aberration at the wide-angle end, (b) shows the intermediate position, and (c) shows the aberrations at the telephoto end.
- Each aberration diagram shows, in order from the left, spherical aberration, astigmatism, and distortion.
- the vertical axis represents the F number
- the solid line is the d-line
- the short dashed line is the F-line
- the long dashed line is the characteristic of the C-line.
- the vertical axis indicates the half angle of view
- the solid line indicates the sagittal plane
- Lines are a characteristic of the median plane.
- the vertical axis represents the half angle of view.
- FIG. 7 shows a case where the third lens group in the infinity in-focus state of the zoom lens according to the first embodiment of the present invention is shifted in a direction perpendicular to the optical axis.
- FIG. 6 is a lateral aberration diagram for comparison.
- FIG. 8 compares a case where the third lens group in the infinity in-focus state of the zoom lens according to the second embodiment of the present invention is shifted in a direction perpendicular to the optical axis. It is a lateral aberration diagram for the purpose.
- FIG. 9 compares a case where the third lens group in the infinity in-focus state of the zoom lens according to the third embodiment of the present invention is shifted in a direction perpendicular to the optical axis.
- FIG. Each lateral aberration diagram shows the lateral aberration at the telephoto end when the aperture is fully opened.
- the case where the translation amount of the third lens group G 3 is 0 is defined as “basic state”, and the case where the third lens group G 3 translates is defined as “vibration correction state”.
- (a), (b), and (c) represent the image point of 75% of the maximum image height (+ 75% image point), the axial image point, It shows the lateral aberration at the image point of 1 75% of the maximum image height (175% image point).
- (d), (e), and (f) represent the + 75% image point, the on-axis image point, and the -175% image in the vibration correction state, respectively.
- the lateral aberration at the point is shown.
- the solid line corresponds to the d-line
- the short dashed line corresponds to the F-line
- the long dashed line corresponds to the C-line.
- Example 1 corresponds to Embodiment 1 described above.
- Table 1 shows the focal length of the zoom lens of Example 1 and
- Table 2 shows the aspherical surface and the focal length of the zoom lens in the infinity in-focus state.
- Table 3 shows the data of the number, the angle of view, the total optical length, and the variable surface distance. ⁇
- the third lens group G3 is 0.14 mm in a direction perpendicular to the optical axis. Is only translated. In this case, the eccentricity is 0 at the telephoto end in the infinity in-focus condition.
- the symmetry of the transverse aberration at the on-axis image point is good.
- the curvature is small and the slope of the aberration curve is small. It can be seen that the decentering coma and the decentering astigmatism are small because of the fact that they are almost equal. This means that sufficient imaging performance is obtained even in the eccentricity correction state.
- Embodiment 2 corresponds to Embodiment 2 described above.
- Example 1
- Table 4 shows the lens data of the zoom lens No. 2 and Table 5 shows the aspheric surface. In the case of focusing on infinity, the focal length, F-number, angle of view, total optical length, and to ⁇
- the third lens group G3 is parallel to the optical axis by 0.119 mm in a direction perpendicular to the optical axis. It is moving.
- the amount of eccentricity is equal to the amount of image eccentricity when the zoom lens is tilted by 0.3 ° at the telephoto end in the infinity in-focus state.
- the zoom lens of the second embodiment can obtain sufficient imaging performance even in the eccentricity correction state.
- Example 3 corresponds to Embodiment 3 described above.
- Table 7 shows the lens data of the zoom lens of Example 3
- Table 8 shows the aspherical data.
- Table 9 shows the focal length, F-number, angle of view, total optical length, and variable surface distance data in the infinity in-focus condition.
- the aberration of the zoom lens according to the third embodiment shown in Tables 7, 8, and 9 is also shown in FIG. 6, which shows that the aberrations are well corrected even when the zoom position is changed. I understand that.
- the third lens group G 3 is connected to the third lens group G 3 in the vibration correction state. It has been translated 0.13 1 mm in the direction perpendicular to.
- the amount of eccentricity is equal to the amount of image eccentricity when the zoom lens is tilted by 0.3 ° in the desired is in a state of focusing on infinity.
- the zoom lens of the third embodiment can obtain sufficient imaging performance even in the eccentricity correction state.
- Table 10 shows the numerical values of the above-mentioned conditional expressions (1) to (4) for the zoom lens in each embodiment.
- the zoom lens according to each embodiment has an angle of view at the wide-angle end of 65 °, a zoom ratio of about 5 to 6 times, high resolution, and high resolution.
- the small number of lenses makes it possible to obtain a zoom lens that can be reduced in size when not in use.
- the zoom lens according to each embodiment can easily add a vibration correction function. (Embodiment 7)
- FIG. 10 is a schematic configuration diagram of a digital still camera at the time of photographing according to the seventh embodiment of the present invention
- FIG. 11 is a digital still camera at the time of collapse of the zoom lens. It is a schematic block diagram.
- the digital still camera includes an imaging device including a zoom lens 1 and a solid-state imaging device 2 that is a CCD, a liquid crystal monitor 3, a housing 4, and the like.
- 1 is a zoom lens
- 2 is a solid-state image sensor
- 3 is a liquid crystal monitor.
- the zoom lens 1 the zoom lens shown in Fig. 1 is used, G1 is the first lens group, G2 is the second lens group, A is the aperture, and G3 is the aperture. It is composed of a third lens group.
- a zoom lens 1 is disposed on the front side of the housing 4, and a solid-state imaging device 2, which is a CCD, is disposed on the rear side of the zoom lens 1.
- the LCD monitor 3 is located behind the housing 4. An optical image of the subject by the zoom lens 1 is formed on the imaging surface S.
- the lens barrel comprises a main lens barrel 5, a movable lens barrel 6, and a cylindrical cam 7.
- the first lens group G1, the second lens group G2, and the third lens group G3 are moved to predetermined positions with respect to the solid-state imaging device 14. It can move and change the magnification from the wide-angle end to the telephoto end.
- the third lens group frame G3 can be moved in the optical axis direction by a focus adjustment motor.
- the total optical length when the zoom lens is not used can be greatly reduced.
- the zoom lens according to the first embodiment is used. Therefore, a digital still camera with a zoom ratio of about 3 times, an angle of view at the wide-angle end of about 65 °, a high resolution, and a small depth when not in use is provided. You can do it.
- the zoom lens of any one of Embodiments 2 to 4 is used instead of the zoom lens of Embodiment 1. It may be.
- the optical system of the electronic digital still camera shown in FIGS. 10 and 11 can be used for a video camera for moving images. In this case, not only moving images but also high-resolution still images can be taken.
- an imaging device composed of the zoom lens of each of the embodiments described above and a solid-state imaging device such as a CCD is used for a mobile phone device, a PDA (Personal Digital Assistance), and a monitoring system. It may be applied to surveillance cameras, web cameras, in-vehicle cameras, etc. in system.
- the zoom ratio is about 5 to 6 times, and the angle of view at the wide-angle end is 60 ° to 70 °.
- a high zoom lens can be obtained.
- the zoom lens according to each embodiment has a small number of lens elements, the total optical length can be shortened when not in use. Further, the zoom lens according to each embodiment can easily add a function of correcting vibration of the zoom lens.
- the zoom lens according to each embodiment the resolution is high, the depth when not in use is thin, and furthermore, the zoom lens is used.
- Digital camera with vibration compensation function An optical device such as a Lucera can be provided.
- the zoom lens according to the present invention includes a digital still camera, a digital video camera, a mobile phone, a PDA (Persona 1 Digital Assistance), a monitoring camera in a monitoring system, Applicable to digital input devices such as Web cameras and in-vehicle cameras, and is particularly suitable for shooting optical systems that require high image quality, such as digital still cameras and digital video cameras. It is.
Abstract
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Priority Applications (4)
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JP2005506909A JP4589231B2 (ja) | 2003-06-13 | 2004-06-03 | ズームレンズ、撮像装置及び撮像装置を備えるカメラ |
US10/533,312 US7443605B2 (en) | 2003-06-13 | 2004-06-03 | Zoom lens, imaging device, and camera having imaging device |
EP04736010A EP1635206A1 (en) | 2003-06-13 | 2004-06-03 | Zoom lens, imaging device, and camera having imaging device |
US12/248,416 US7751125B2 (en) | 2003-06-13 | 2008-10-09 | Zoom lens, imaging device, and camera having imaging device |
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JP2003-169069 | 2003-06-13 | ||
JP2003169069 | 2003-06-13 |
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US10/533,312 A-371-Of-International US7443605B2 (en) | 2003-06-13 | 2004-06-03 | Zoom lens, imaging device, and camera having imaging device |
US12/248,416 Division US7751125B2 (en) | 2003-06-13 | 2008-10-09 | Zoom lens, imaging device, and camera having imaging device |
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EP (1) | EP1635206A1 (ja) |
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WO (1) | WO2004111698A1 (ja) |
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JP2009288618A (ja) * | 2008-05-30 | 2009-12-10 | Canon Inc | ズームレンズおよびそれを有する撮像装置 |
JP2011145674A (ja) * | 2011-01-18 | 2011-07-28 | Olympus Corp | ズームレンズ及びそれを用いた撮像装置 |
JP2013164623A (ja) * | 2008-04-02 | 2013-08-22 | Panasonic Corp | ズームレンズ系、交換レンズ装置、及びカメラシステム |
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Also Published As
Publication number | Publication date |
---|---|
US7443605B2 (en) | 2008-10-28 |
US20060193061A1 (en) | 2006-08-31 |
CN1717609A (zh) | 2006-01-04 |
US20090073574A1 (en) | 2009-03-19 |
US7751125B2 (en) | 2010-07-06 |
EP1635206A1 (en) | 2006-03-15 |
JP4589231B2 (ja) | 2010-12-01 |
JPWO2004111698A1 (ja) | 2006-07-27 |
CN100368859C (zh) | 2008-02-13 |
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