WO2018078887A1 - ズームレンズ、撮像装置、移動体及びシステム - Google Patents
ズームレンズ、撮像装置、移動体及びシステム Download PDFInfo
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- WO2018078887A1 WO2018078887A1 PCT/JP2016/082365 JP2016082365W WO2018078887A1 WO 2018078887 A1 WO2018078887 A1 WO 2018078887A1 JP 2016082365 W JP2016082365 W JP 2016082365W WO 2018078887 A1 WO2018078887 A1 WO 2018078887A1
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- lens group
- lens
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- refractive power
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/18—Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B15/00—Optical objectives with means for varying the magnification
- G02B15/14—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective
- G02B15/16—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective with interdependent non-linearly related movements between one lens or lens group, and another lens or lens group
- G02B15/20—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 an additional movable lens or lens group for varying the objective focal length
Definitions
- the present invention relates to a zoom lens, an imaging device, a moving body, and a system.
- Patent Documents 1 and 2 A four-group zoom lens that moves the first group lens during zooming is known (for example, Patent Documents 1 and 2).
- Patent Document 1 Japanese Patent Application Laid-Open No. 2006-208889
- Patent Document 2 Japanese Patent Application Laid-Open No. 2011-133739
- a zoom lens according to an aspect of the present invention includes, in order from the object side, a first negative lens group having negative refractive power, a first positive lens group having positive refractive power, and a second negative lens having positive refractive power.
- a positive lens group At the time of zooming from the wide-angle end to the telephoto end, the distance from the first negative lens group to the image sensor is constant, the distance between the first negative lens group and the first positive lens group is reduced, and the second positive lens group is reduced.
- the lens group moves along a locus of a convex arc toward the image sensor.
- a second negative lens group having negative refractive power may be further provided between the first positive lens group and the second positive lens group.
- the distance between the second negative lens group and the second positive lens group may be widened when zooming from the wide-angle end to the telephoto end.
- the second positive lens group may be located closer to the image sensor at the telephoto end than at the wide-angle end.
- the first negative lens group may include four lenses respectively having negative, negative, negative, and positive refractive powers in order from the object side. If the Abbe numbers of the three lenses having negative refractive power included in the first negative lens group are v1, v2, and v3, respectively, the conditional expression v1> 60 v2> 60 v3> 60 You may be satisfied.
- the first negative lens group may include four lenses each having negative, negative, negative, and positive refractive power in order from the object side. Of the three lenses having negative refractive power included in the first negative lens group, at least one of the two lenses on the object side may be an aspherical lens.
- the first negative lens group may include four lenses respectively having negative, negative, negative, and positive refractive powers in order from the object side. If the refractive index of the positive lens of the first negative lens group is n4 and the Abbe number is v4, the conditional expression n4> 1.9. v4 ⁇ 35 You may be satisfied.
- the first positive lens group includes at least three convex lenses, and all the convex lenses constituting the conditional lens have a conditional expression v> 60. You may be satisfied.
- At least one of the second positive lens group and the second negative lens group may be composed of a single lens or a cemented lens. At least one of the second positive lens group and the second negative lens group may have a focus function.
- At least one of the second positive lens group and the second negative lens group may be composed of a single lens or a cemented lens. At least one of the second positive lens group and the second negative lens group may have an anti-vibration function.
- the most object-side lens constituting the first positive lens group may be a single lens having a positive refractive power and an aspherical lens.
- An imaging apparatus includes the zoom lens and an imaging element.
- the moving body according to one embodiment of the present invention moves with the zoom lens described above.
- the moving body may be an unmanned aerial vehicle.
- a system includes the above zoom lens, a support mechanism that supports the zoom lens so as to be displaceable, and a handle that is attached to the support mechanism.
- FIG. 1 schematically illustrates an example of a mobile system 10 that includes an unmanned aerial vehicle (UAV) 100 and a controller 50.
- UAV unmanned aerial vehicle
- FIG. 1 shows a lens configuration of a lens system 300 in a first example.
- the movement locus of each lens unit at the time of zooming from the wide angle end to the telephoto end is schematically shown. It shows spherical aberration, astigmatism and distortion at the wide angle end. Spherical aberration, astigmatism, and distortion are shown at an intermediate angle of view. Spherical aberration, astigmatism and distortion at the telephoto end are shown.
- the spherical aberration diagram of the lens system 300 for three wavelengths of light is shown.
- the lens structure of the lens system 900 in 2nd Example is shown.
- the movement locus of each lens unit at the time of zooming from the wide angle end to the telephoto end is schematically shown. It shows spherical aberration, astigmatism and distortion at the wide angle end. Spherical aberration, astigmatism, and distortion are shown at an intermediate angle of view. Spherical aberration, astigmatism and distortion at the telephoto end are shown.
- the spherical aberration figure about the light of 3 wavelengths of the lens system 300 is shown.
- a behavior at the time of zooming of a zoom lens having a two-group configuration including a first negative lens group 1501 and a first positive lens group 1502 is shown. In the lens configuration shown in FIG.
- FIG. 15 the behavior of a zoom lens having a three-group configuration in which a second positive lens group 1504 having a fixed position is added to the image plane side is shown.
- the zoom lens is modified such that the position of the first negative lens group 1501 at the time of zooming is fixed with respect to the image sensor and the second positive lens group 1504 is movable with respect to the image sensor.
- the behavior at the time of double is shown.
- 2 is an external perspective view showing an example of a stabilizer 800.
- FIG. 1 schematically shows an example of a mobile system 10 including an unmanned aerial vehicle (UAV) 100 and a controller 50.
- the UAV 100 includes a UAV main body 101, a gimbal 110, a plurality of imaging devices 230, and an imaging device 220.
- the imaging device 220 includes a lens device 160 and an imaging unit 140.
- the UAV 100 is an example of a moving body that includes an imaging device and moves.
- the moving body is a concept including, in addition to UAV, other aircraft that moves in the air, vehicles that move on the ground, ships that move on the water, and the like.
- the UAV main body 101 includes a plurality of rotor blades.
- the UAV main body 101 flies the UAV 100 by controlling the rotation of a plurality of rotor blades.
- the UAV main body 101 causes the UAV 100 to fly using four rotary wings.
- the number of rotor blades is not limited to four.
- the UAV 100 may be a fixed wing aircraft that does not have rotating blades.
- the imaging device 230 is an imaging camera that images a subject included in a desired imaging range.
- the plurality of imaging devices 230 are sensing cameras that image the surroundings of the UAV 100 in order to control the flight of the UAV 100.
- the imaging device 230 may be fixed to the UAV main body 101.
- Two imaging devices 230 may be provided on the front surface which is the nose of the UAV 100.
- Two other imaging devices 230 may be provided on the bottom surface of the UAV 100.
- the two imaging devices 230 on the front side may be paired and function as a so-called stereo camera.
- the two imaging devices 230 on the bottom side may also be paired and function as a stereo camera.
- Three-dimensional spatial data around the UAV 100 may be generated based on images captured by the plurality of imaging devices 230.
- the distance to the subject imaged by the imaging device 230 can be specified by a stereo camera using a plurality of imaging devices 230.
- the number of imaging devices 230 provided in the UAV 100 is not limited to four.
- the UAV 100 only needs to include at least one imaging device 230.
- the UAV 100 may include at least one imaging device 230 on each of the nose, the tail, the side surface, the bottom surface, and the ceiling surface of the UAV 100.
- the imaging device 230 may have a single focus lens or a fisheye lens.
- the plurality of imaging devices 230 may be collectively referred to simply as the imaging device 230.
- the controller 50 includes a display unit 54 and an operation unit 52.
- the operation unit 52 receives an input operation for controlling the attitude of the UAV 100 from the user.
- the controller 50 transmits a signal for controlling the UAV 100 based on a user operation received by the operation unit 52.
- the operation unit 52 receives an operation for changing the magnification of the lens device 160.
- the controller 50 transmits a signal instructing the change of the magnification to the UAV 100.
- the controller 50 receives an image captured by at least one of the imaging device 230 and the imaging device 220.
- the display unit 54 displays an image received by the controller 50.
- the display unit 54 may be a touch panel.
- the controller 50 may accept an input operation from the user through the display unit 54.
- the display unit 54 may accept a user operation or the like in which the user specifies the position of the subject to be imaged by the imaging device 220.
- the imaging unit 140 generates and records image data of an optical image formed by the lens device 160.
- the lens device 160 may be provided integrally with the imaging unit 140.
- the lens device 160 may be a so-called interchangeable lens.
- the lens device 160 may be provided so as to be detachable from the imaging unit 140.
- the gimbal 110 has a support mechanism that movably supports the imaging device 220.
- the imaging device 220 is attached to the UAV main body 101 via the gimbal 110.
- the gimbal 110 supports the imaging device 220 so as to be rotatable about the pitch axis.
- the gimbal 110 supports the imaging device 220 so as to be rotatable around a roll axis.
- the gimbal 110 supports the imaging device 220 so as to be rotatable about the yaw axis.
- the gimbal 110 may support the imaging device 220 rotatably around at least one of a pitch axis, a roll axis, and a yaw axis.
- the gimbal 110 may support the imaging device 220 rotatably about each of the pitch axis, the roll axis, and the yaw axis.
- the gimbal 110 may hold the imaging unit 140.
- the gimbal 110 may hold the lens device 160.
- the gimbal 110 may change the imaging direction of the imaging device 220 by rotating the imaging unit 140 and the lens device 160 about at least one of the yaw axis, the pitch axis, and the roll axis.
- FIG. 2 shows an example of functional blocks of the UAV100.
- the UAV 100 includes an interface 102, a control unit 104, a memory 106, a gimbal 110, an imaging unit 140, and a lens device 160.
- the interface 102 communicates with the controller 50.
- the interface 102 receives various commands from the controller 50.
- the control unit 104 controls the flight of the UAV 100 according to the command received from the controller 50.
- the control unit 104 controls the gimbal 110, the imaging unit 140, and the lens device 160.
- the control unit 104 may be configured by a microprocessor such as a CPU or MPU, a microcontroller such as an MCU, or the like.
- the memory 106 stores a program necessary for the control unit 104 to control the gimbal 110, the imaging unit 140, and the lens device 160.
- the memory 106 may be a computer-readable recording medium.
- the memory 106 may include at least one of flash memory such as SRAM, DRAM, EPROM, EEPROM, and USB memory.
- the memory 106 may be provided in the housing of the UAV 100. It may be provided so as to be removable from the housing of the UAV 100.
- the gimbal 110 includes a control unit 112, a driver 114, a driver 116, a driver 118, a drive unit 124, a drive unit 126, a drive unit 128, and a support mechanism 130.
- the drive unit 124, the drive unit 126, and the drive unit 128 may be motors.
- the support mechanism 130 supports the imaging device 220.
- the support mechanism 130 movably supports the imaging direction of the imaging device 220.
- the support mechanism 130 supports the imaging unit 140 and the lens device 160 so as to be rotatable about the yaw axis, the pitch axis, and the roll axis.
- the support mechanism 130 includes a rotation mechanism 134, a rotation mechanism 136, and a rotation mechanism 138.
- the rotation mechanism 134 rotates the imaging unit 140 and the lens device 160 around the yaw axis using the drive unit 124.
- the rotation mechanism 136 rotates the imaging unit 140 and the lens device 160 around the pitch axis using the driving unit 126.
- the rotation mechanism 138 uses the drive unit 128 to rotate the imaging unit 140 and the lens device 160 around the roll axis.
- the control unit 112 outputs an operation command indicating each rotation angle to the driver 114, the driver 116, and the driver 118 according to the operation command of the gimbal 110 from the control unit 104.
- the driver 114, the driver 116, and the driver 118 drive the drive unit 124, the drive unit 126, and the drive unit 128 in accordance with an operation command that indicates a rotation angle.
- the rotation mechanism 134, the rotation mechanism 136, and the rotation mechanism 138 are driven and rotated by the drive unit 124, the drive unit 126, and the drive unit 128, respectively, and change the postures of the imaging unit 140 and the lens device 160.
- the imaging unit 140 captures an image with light that has passed through the lens system 300.
- the imaging unit 140 includes a control unit 222, an imaging element 221, and a memory 223.
- the control unit 222 may be configured by a microprocessor such as a CPU or MPU, a microcontroller such as an MCU, or the like.
- the control unit 222 controls the imaging unit 140 and the lens device 160 in accordance with an operation command for the imaging unit 140 and the lens device 160 from the control unit 104. Based on the signal received from the controller 50, the controller 222 outputs to the lens device 160 a control command that instructs the lens device 160 to change the magnification.
- the memory 223 may be a computer-readable recording medium, and may include at least one of flash memory such as SRAM, DRAM, EPROM, EEPROM, and USB memory.
- the memory 223 may be provided inside the housing of the imaging unit 140. It may be provided so as to be removable from the housing of the imaging unit 140.
- the imaging element 221 generates image data of an optical image that is held inside the housing of the imaging unit 140 and is formed via the lens device 160, and outputs the image data to the control unit 222.
- the control unit 222 stores the image data output from the image sensor 221 in the memory 223.
- the control unit 222 may output the image data to the memory 106 via the control unit 104 and store it.
- the lens device 160 is a zoom lens.
- the lens device 160 is a full length fixed zoom lens.
- the lens device 160 is a four-group zoom lens.
- the lens device 160 includes a control unit 162, a memory 163, a drive mechanism 161, and a lens system 300.
- the lens system 300 includes a first lens group 301, a second lens group 302, a third lens group 303, and a fourth lens group 304 in order from the object side.
- the first lens group 301 does not move in the optical axis direction of the lens system 300 when the lens device 160 is zoomed.
- the first lens group 301 may be a lens fixed in the optical axis direction of the lens system 300.
- the lens group located closest to the object side that is involved in the image plane movement at the time of zooming does not move at the time of zooming of the lens device 160. Therefore, it is difficult for focus shift, image shift, and the like to occur during zooming.
- the optical axis of the lens system 300 may be simply referred to as “optical axis”.
- the “lens group” refers to a group of one or more lenses. A lens composed of a single lens is also called a “lens group”.
- the control unit 162 moves at least one of the second lens group 302, the third lens group 303, and the fourth lens group 304 along the optical axis in accordance with a control command from the control unit 222.
- the second control unit 162 moves the second lens group 302, the third lens group 303, and the fourth lens group 304 along the optical axis during zooming. This prevents the movement of the focus position during zooming.
- An image formed by the optical system 300 of the lens device 160 is picked up by the image pickup unit 140.
- the driving mechanism 161 drives the second lens group 302, the third lens group 303, and the fourth lens group 304.
- the drive mechanism 161 includes, for example, an actuator and a holding member that holds the second lens group 302, the third lens group 303, and the fourth lens group 304.
- Driving pulses are supplied from the control unit 162 to the actuator.
- the actuator is displaced by a driving amount corresponding to the supplied pulse.
- the holding member is displaced according to the displacement of the actuator, the second lens group 302, the third lens group 303, and the fourth lens group 304 are displaced.
- the lens device 160 may be provided integrally with the imaging unit 140.
- the lens device 160 may be a so-called interchangeable lens.
- the lens device 160 may be provided so as to be detachable from the imaging unit 140.
- the imaging device 230 includes a control unit 232, a control unit 234, an imaging device 231, a memory 233, and a lens 235.
- the control unit 232 may be configured by a microprocessor such as a CPU or MPU, a microcontroller such as an MCU, or the like.
- the control unit 232 controls the image sensor 231 in accordance with an operation command for the image sensor 231 from the control unit 104.
- the control unit 234 may be configured by a microprocessor such as a CPU or MPU, a microcontroller such as an MCU, or the like.
- the control unit 234 controls the focal length of the lens 235 in accordance with an operation command for the lens 235 from the control unit 104.
- the control unit 234 may control the focal point of the lens 235 in accordance with an operation command for the lens 235.
- the control unit 234 may control a diaphragm included in the lens 235 in accordance with an operation command for the lens 235.
- the memory 233 may be a computer-readable recording medium.
- the memory 233 may include at least one of flash memory such as SRAM, DRAM, EPROM, EEPROM, and USB memory.
- the image sensor 231 generates image data of an optical image formed through the lens 235 and outputs the image data to the control unit 232.
- the control unit 232 stores the image data output from the image sensor 231 in the memory 233.
- the UAV 100 includes the control unit 104, the control unit 112, the control unit 222, the control unit 232, the control unit 234, and the control unit 162
- any one of the control units 104, the control unit 112, the control unit 222, the control unit 232, the control unit 234, and the process executed by a plurality of the control units 162 may be executed by any one control unit.
- Processing executed by the control unit 104, the control unit 112, the control unit 222, the control unit 232, the control unit 234, and the control unit 162 may be executed by one control unit.
- the UAV 100 includes the memory 106, the memory 223, and the memory 233 will be described.
- Information stored in at least one of the memory 106, the memory 223, and the memory 233 may be stored in one or more other memories of the memory 106, the memory 223, and the memory 233.
- the first lens group 301 has negative refractive power.
- the second lens group 302 has a positive refractive power.
- the third lens group 303 has negative refractive power.
- the fourth lens group 304 has a positive refractive power.
- the first lens group 301, the second lens group 302, the third lens group 303, and the fourth lens group 304 are, from the object side, the first lens group 301, the second lens group 302, the third lens group 303, and the fourth lens. They are provided in the order of the group 304.
- the behavior of the lens system 300 at the time of zooming is described, the behavior when the lens device 160 functions as a zoom lens with respect to an object at infinity is shown.
- the distance from the first lens group 301 to the image sensor 221 is constant during zooming from the wide-angle end to the telephoto end.
- the distance between the first lens group 301 and the second lens group 302 decreases.
- the fourth lens group 304 moves along a locus of a convex arc toward the image sensor 221.
- the movement along the locus of the convex arc means, for example, that the fourth lens group 304 moves along a locus away from the image sensor 221 after approaching the image sensor 221.
- the first lens group 301 does not move with respect to the image sensor 221 at the time of zooming, and the fourth lens group 304 moves along a locus away from the image sensor 221 after approaching the image sensor 221 side. Accordingly, it is possible to correct the image plane deviation due to the movement of the second lens group 302 mainly responsible for zooming.
- the lens group drive mechanism can be simplified. Further, the eccentricity of the first lens group 301 can be suppressed when disturbance such as vibration occurs. For this reason, it is possible to suppress defocusing and resolution degradation during vibration.
- the image pickup apparatus 220 can be reduced in size and performance.
- the lens system 300 includes a third lens group 303 between the second lens group 302 and the fourth lens group 304.
- the distance between the third lens group 303 and the fourth lens group 304 is widened.
- the distance between the third lens group 303 and the fourth lens group 304 is widened from the angle of view at the wide-angle end to a predetermined angle of view.
- the interval between the third lens group 303 and the fourth lens group 304 can be constant or narrow between the angle of view larger than the predetermined angle of view and the angle of view at the telephoto end.
- the fourth lens group 304 may be positioned closer to the image sensor 221 at the telephoto end than at the wide-angle end.
- the magnification increases as the fourth lens group 304 having positive refractive power approaches the image sensor 221.
- the fourth lens group 304 at the telephoto end is closer to the image sensor 221 than the position of the fourth lens group 304 at the wide-angle end, so that the fourth lens group 304 performs zooming more strongly on the telephoto end side. Can bear.
- the movement amount of the second lens group 302 can be reduced. Therefore, the lens system 300 can be reduced in size.
- the first lens group 301 may include four lenses having negative, negative, negative, and positive refractive power in order from the object side.
- the Abbe numbers of the three lenses having negative refractive power included in the first lens group 301 are v1, v2, and v3, the following three conditional expressions v1> 60 (conditional expression 1) v2> 60 (conditional expression 2) v3> 60 (conditional expression 3) Is preferably satisfied.
- the overall negative refractive power of the first lens group 301 can be increased. Further, the overall length of the lens system 300 can be shortened. In addition, imaging characteristics can be improved. Since the three lenses having negative refractive power share the negative power of the first lens group 301, a lens having negative refractive power can be formed using a low dispersion material. Thereby, chromatic aberration can be suppressed more strongly.
- At least one of the two lenses on the object side is preferably an aspheric lens.
- the lens on the object side has a large difference in height between the axial ray and the peripheral ray.
- at least one of the two lenses on the object side is aspherical, so that distortion and field curvature can be effectively corrected.
- Conditional expression ⁇ 1.8 ⁇ f1 / fw ⁇ 1.1 (conditional expression 4) where f1 is the focal length of the first lens group 301 and fw is the focal length of the entire system (lens system 300) at the wide angle end. Is preferably satisfied.
- the lens system 300 can be reduced in size by satisfying the lower limit of conditional expression 4, that is, by making the refractive power of the first lens group 301 higher than a predetermined lower limit threshold.
- the upper limit of conditional expression 4 that is, by making the refractive power of the first lens group 301 not higher than a predetermined upper limit threshold, it is possible to improve the imaging characteristics.
- conditional expression 1.0 ⁇ f2 / fw ⁇ 1.8 (conditional expression 5) Is preferably satisfied.
- the lens system 300 can be reduced in size by satisfying the upper limit of conditional expression 5, that is, by making the refractive power of the second lens group 302 higher than a predetermined lower limit threshold.
- the lower limit of Conditional Expression 5 that is, by making the refractive power of the second lens group 302 not higher than a predetermined upper limit threshold, it is possible to improve imaging characteristics.
- the second lens group 302 may include at least three convex lenses. It is preferable that the Abbe number v of all convex lenses included in the second lens group 302 is greater than 60. By setting all Abbe numbers of the convex lenses of the second lens group 302 to 60 or more, chromatic aberration can be suppressed while increasing the refractive power of the second lens group 302. Thereby, the lens system 300 can be reduced in size while improving the imaging characteristics.
- the fourth lens group 304 and the third lens group 303 may be composed of a single lens or a cemented lens. Note that at least one of the fourth lens group 304 and the third lens group 303 may have a focus function. At least one of the fourth lens group 304 and the third lens group 303 may have an anti-vibration function.
- the lens driving mechanism can be simplified by using a single lens or a cemented lens as the lens group responsible for the focus function or the image stabilization function.
- the lens driving element can be reduced in weight. As a result, the entire lens system 300 is reduced in size.
- the most object-side lens constituting the second lens group 302 is a positive single lens and an aspherical lens.
- the total length of the lens system 300 can be shortened by increasing the positive refractive power of the lens on the object side of the second lens group 302.
- aberration can be effectively corrected by using an aspherical surface for a lens having strong power.
- FIG. 3 shows the lens configuration of the lens system 300 in the first embodiment, together with the imaging element 221, the optical element F1, and the optical element F2.
- FIG. 3 shows the positions of the first lens group 301, the second lens group 302, the third lens group 303, and the fourth lens group 304 at the wide-angle end, the intermediate field angle, and the telephoto end, respectively.
- STO indicates an aperture.
- Optical elements F1 and F2 indicate optical filters such as a low-pass filter.
- a plurality of surfaces of the lens system 300 are identified by a surface number i.
- the first surface of the lens as viewed from the object side is the first surface, and thereafter the surface numbers are counted up in the order in which the light passes through the surface.
- “Di” indicates an interval on the optical axis between the i-th surface and the (i + 1) -th surface.
- F indicates the focal length.
- Fno indicates an F number.
- ⁇ indicates a half angle of view.
- R indicates a radius of curvature. In the radius of curvature, “INF” indicates a plane.
- N represents a refractive index.
- Table 1 shows lens data of lenses included in the lens system 300 in the first example.
- Di is shown in association with the surface number i.
- a surface numbered with * is a surface having an aspherical shape.
- Table 2 shows the surface number of the surface having the aspheric shape and the aspheric parameter.
- ⁇ represents a conic constant (conic constant).
- A”, “B”, “C”, and “D” are fourth-order, sixth-order, eighth-order, and tenth-order aspheric coefficients, respectively.
- Ei represents an exponential expression with 10 as the base. That is, “ Ei ” represents “10 ⁇ i ”. For example, “5.555200E-01” represents “5.555200 ⁇ 10 ⁇ 1 ”.
- the paraxial curvature is the reciprocal of the radius of curvature.
- Table 3 shows the focal length, F number, and half angle of view of the lens system 300 at each of the wide angle end, the intermediate angle of view, and the telephoto end.
- the surface distance D8 between the first lens group 301 and the second lens group 302, and between the second lens group 302 and the third lens group 303 can be changed.
- Table 4 shows the surface spacing at each of the wide-angle end, the intermediate field angle, and the telephoto end.
- Table 5 shows the focal lengths of the first lens group 301, the second lens group 302, the third lens group 303, and the fourth lens group 304.
- FIG. 4 schematically shows a trajectory of the first lens group 301, the second lens group 302, the third lens group 303, and the fourth lens group 304 moving when the lens system 300 is zoomed from the wide-angle end to the telephoto end. .
- the arrow indicates that the lens system 300 moves upon zooming.
- the distance from the first lens group 301 to the image sensor 221 is constant during zooming.
- the first lens group 301 has four lenses of a negative lens L1, a negative lens L2, a negative lens L3, and a positive lens L4 from the object side. This makes it possible to gently bend off-axis light rays on the wide angle side where the incident angle is particularly large. Therefore, it is possible to satisfactorily correct off-axis aberrations such as distortion, coma, and field curvature. In addition, the spherical aberration on the telephoto side can be corrected well. Further, since the negative power of the first lens group 301 is shared by the three negative lenses L1 to L3, the negative power of the first lens group 301 can be increased while suppressing aberrations. Further, the overall length of the lens system 300 can be shortened.
- the Abbe numbers of the negative lenses L1 to L3 in the first lens group 301 are all v> 60.
- the negative lens included in the first lens group 301 which is a negative lens, of a low dispersion glass material, the lateral chromatic aberration on the wide-angle side and the axial chromatic aberration on the telephoto side can be favorably corrected.
- the second lens group 302 includes, from the object side, a positive single lens L5, a stop STO, positive and negative cemented lenses L7 and L8, and negative and positive cemented lenses L9 and L10.
- the object-side surface and the image-side surface have an aspheric shape.
- spherical aberration can be corrected more favorably.
- Only one of the positive single lenses L5 may have an aspheric shape.
- the stop STO is disposed between the positive single lenses L5 and L7. Thereby, the second lens group 302 can be brought closer to the first lens group 301 on the telephoto side. Therefore, the overall length of the lens system 300 can be shortened.
- the second lens group 302 moves in one direction from the image plane side to the object side.
- the first lens group 301 and the second lens group 302 are responsible for the main zooming component
- the third lens group 303 and the fourth lens group 304 are responsible for the secondary zooming component.
- the fourth lens group 304 is also responsible for correcting image plane fluctuations associated with zooming.
- the interval between the first lens group 301 and the second lens group 302 decreases monotonously in the entire zooming section from the wide-angle end to the telephoto end.
- the third lens group 303 moves from the image plane side to the object side during zooming from the wide angle end to the telephoto end. At this time, the third lens group 303 moves so as to be spaced from the second lens group 302. At the time of zooming from the wide-angle end to the telephoto end, the fourth lens group 304 moves along a convex movement locus toward the image sensor 221.
- the movement of the lens group in a convex movement locus toward the image sensor 221 means, for example, that the horizontal axis is the angle of view or the focal length, the vertical axis is the amount of displacement of the lens group in the optical axis direction, and the direction toward the image sensor 221 is This means that when the movement locus of the lens group is drawn as the positive direction of the vertical axis, the movement locus of the lens group becomes convex.
- the distance between the fourth lens group 304 and the third lens group 303 increases from the wide angle end until a predetermined angle of view is reached.
- the distance between the fourth lens group 304 and the third lens group 303 can be narrowed until reaching the telephoto end from a predetermined angle of view.
- FIG. 5 shows spherical aberration, astigmatism and distortion at the wide angle end.
- FIG. 6 shows spherical aberration, astigmatism and distortion at an intermediate angle of view.
- FIG. 7 shows spherical aberration, astigmatism and distortion at the telephoto end.
- the solid line indicates the value of the d-line (587.56 nm), and the broken line indicates the value of the g-line (435.84 nm).
- the solid line indicates the value of the sagittal image plane of the d line, and the broken line indicates the value of the meridional image plane of the d line.
- the distortion diagrams shown in FIGS. 5 to 7 show values for the d-line. From the respective aberration diagrams, it can be seen that the lens system 300 is excellent in various aberrations and has excellent imaging performance.
- FIG. 8 shows a spherical aberration diagram of the lens system 300 for light of three wavelengths.
- the thick line indicates the value of c-line (656.28 nm)
- the solid line indicates the value of d-line (587.56 nm)
- the broken line indicates the value of g-line (435.84 nm).
- the spherical aberration is within a range of 0.1 mm or less for each wavelength of light. Thereby, it can be seen that the axial chromatic aberration is corrected well.
- FIG. 9 shows the lens configuration of the lens system 900 according to the second embodiment, together with the imaging element 221, the optical element F1, and the optical element F2.
- the lens system 900 includes a first lens group 901, a second lens group 902, a third lens group 903, and a fourth lens group 904.
- the first lens group 901, the second lens group 902, the third lens group 903, and the fourth lens group 904 are respectively a first lens group 301, a second lens group 302, and a third lens group 303 in the lens system 300.
- the fourth lens group 304 In the description of the lens system 900, only the differences from the lens system 300 among the characteristics of the lens system 900 will be described, and the same characteristics may be omitted. Further, symbols and the like used in the description of the lens system 900 have the same meanings as symbols and the like described in relation to the lens system 300 unless otherwise specified.
- FIG. 9 shows the positions of the first lens group 901, the second lens group 902, the third lens group 903, and the fourth lens group 904 at the wide-angle end, the intermediate field angle, and the telephoto end, respectively.
- Table 6 shows lens data of lenses included in the lens system 900.
- surfaces with * in the surface number are surfaces having an aspherical shape.
- Table 7 shows surfaces having an aspheric shape in the lens system 900 and aspheric parameters. “A”, “B”, “C”, “D”, and “E” are fourth-order, sixth-order, eighth-order, tenth-order, and twelfth-order aspheric coefficients, respectively.
- Table 8 shows the focal length, F-number, and half angle of view of the lens system 900 at the wide angle end, the intermediate field angle, and the telephoto end, respectively.
- the surface distance D21, the surface distance D24 between the third lens group 903 and the fourth lens group 904, and the surface distance D27 between the fourth lens group 904 and the image sensor 221 may change.
- Table 9 shows the focal length and the surface interval at the wide angle end, the intermediate field angle, and the telephoto end, respectively.
- Table 10 shows the respective focal lengths of the first lens group 301, the second lens group 302, the third lens group 303, and the fourth lens group 304.
- FIG. 10 schematically shows the trajectory of the first lens group 901, the second lens group 902, the third lens group 903, and the fourth lens group 904 when the lens system 900 is zoomed from the wide angle end to the telephoto end. .
- the arrow indicates that the lens system 900 moves upon zooming.
- the interval from the first lens group 901 to the image sensor 221 is constant at the time of zooming.
- the first lens group 901 has four lenses, a negative lens L1, a negative lens L2, a negative lens L3, and a positive lens L4, from the object side.
- Li is a symbol for indicating that the lens is the i-th optical element from the object side.
- the same symbol as the symbol Li assigned to the lens in the first embodiment does not mean that it is the same lens.
- the first lens group 901 By configuring the first lens group 901 to include the four lenses of the negative lens L1, the negative lens L2, the negative lens L3, and the positive lens L4, off-axis rays on the wide-angle side where the incident angle is particularly large can be moderated. Can be bent. Therefore, it is possible to satisfactorily correct off-axis aberrations such as distortion, coma, and field curvature. In addition, the spherical aberration on the telephoto side can be corrected well. Further, since the negative power of the first lens group 901 is shared by the three negative lenses L1 to L3, the negative power of the first lens group 901 can be increased while suppressing aberrations. Further, the overall length of the lens system 900 can be shortened.
- the Abbe numbers of the negative lenses L1 to L3 in the first lens group 901 are all v> 60.
- the negative lens included in the first lens group 901 that is a negative lens with a low dispersion glass material, it is possible to satisfactorily correct the lateral chromatic aberration on the wide-angle side and the axial chromatic aberration on the telephoto side.
- the second lens group 902 includes, from the object side, a stop STO, a positive single lens L6, positive and negative cemented lenses L7 and L8, a positive single lens L9, and positive and negative cemented lenses L10 and L11.
- the single lens L6 is closest to the stop STO and is located closest to the object side.
- the single lens L6 has both aspheric shapes on both sides.
- the single lens L9 has an aspheric shape on both sides.
- the distance between the first lens group 901 and the image sensor 221 is constant during zooming.
- the second lens group 902 moves in one direction from the image plane side to the object side.
- the first lens group 901 and the second lens group 902 are responsible for the main zooming component
- the third lens group 903 and the fourth lens group 904 are responsible for the secondary zooming component.
- the fourth lens group 904 is also responsible for correcting image plane fluctuations associated with zooming.
- the interval between the first lens group 901 and the second lens group 902 monotonously decreases in the entire zooming section from the wide-angle end to the telephoto end.
- the third lens group 903 moves from the image plane side to the object side during zooming from the wide angle end to the telephoto end. At this time, the third lens group 903 moves so as to be spaced from the second lens group 902. At the time of zooming from the wide-angle end to the telephoto end, the fourth lens group 904 moves along a convex movement locus toward the image sensor 221. The distance between the fourth lens group 904 and the third lens group 903 increases from the wide angle end until a predetermined angle of view is reached. The distance between the fourth lens group 904 and the third lens group 903 can be narrowed until reaching the telephoto end from a predetermined angle of view.
- FIG. 11 shows spherical aberration, astigmatism and distortion at the wide angle end.
- FIG. 12 shows spherical aberration, astigmatism and distortion at an intermediate angle of view.
- FIG. 13 shows spherical aberration, astigmatism and distortion at the telephoto end.
- the solid line shows the value of d-line (587.56 nm), and the broken line shows the value of g-line (435.84 nm).
- the solid line indicates the value of the sagittal image plane of the d line, and the broken line indicates the value of the meridional image plane of the d line.
- the distortion diagrams shown in FIGS. 11 to 13 show values for the d-line. From each aberration diagram, it can be seen that the lens system 900 has excellent imaging performance with various aberrations corrected well.
- FIG. 14 is a spherical aberration diagram for the three-wavelength light of the lens system 300.
- the thick line indicates the value of c-line (656.28 nm)
- the solid line indicates the value of d-line (587.56 nm)
- the broken line indicates the value of g-line (435.84 nm).
- the spherical aberration is within a range of 0.1 mm or less for each wavelength of light. It can be seen that the longitudinal chromatic aberration is corrected well.
- Table 11 collectively shows numerical values according to the conditional expressions of the first and second embodiments.
- the numerical values associated with Conditional Expression 1, Conditional Expression 2, and Conditional Expression 3 indicate the Abbe numbers of the negative lens L1, the negative lens L2, and the negative lens L3, respectively.
- the numerical value associated with conditional expression 4 indicates the value of f1 / fw.
- the numerical value associated with conditional expression 5 indicates the value of f2 / fw.
- the numerical value associated with conditional expression 6 indicates the refractive index.
- the numerical value associated with conditional expression 7 indicates the Abbe number.
- the lens system 300 and the lens system 900 it is possible to provide a zoom lens that does not move the lens located closest to the object side during zooming. Thereby, it is possible to suppress the influence of a manufacturing error, a driving error, and the like regarding the lens located closest to the object side. For example, it is possible to make it difficult for focus shift, image shift, and the like to occur during zooming.
- the first lens group 301 and the first lens group 901 correspond to a first negative lens group having negative refractive power.
- the second lens group 302 and the second lens group 902 correspond to a first positive lens group having positive refractive power.
- the fourth lens group 304 and the fourth lens group 904 correspond to a second positive lens group having positive refractive power.
- FIG. 15 shows the behavior at the time of zooming of a zoom lens having a two-group configuration including the first negative lens group 1501 and the first positive lens group 1502.
- the first positive lens group 1502 is responsible for zooming.
- the first positive lens group 1502 moves from the imaging surface side to the object side.
- the first negative lens group 1501 moves along a locus that is convex toward the image sensor 221 so as to correct an image plane change due to the movement of the first positive lens group 1502.
- the zoom lens having a two-group configuration including the first negative lens group and the first positive lens group in order from the object side is generally variably provided in the entire length.
- the total length of the lens system is the longest at the wide-angle end or the telephoto end, and the total length of the lens system is the shortest at the angle of view between the wide-angle end and the telephoto end.
- FIG. 16 shows the behavior of a zoom lens having a three-group configuration in which the second positive lens group 1504 having a fixed position is added to the image plane side in the lens configuration shown in FIG.
- the second positive lens group 1504 is located closer to the image plane side than the first positive lens group 1502.
- the second positive lens group 1504 can contribute to shortening the overall length of the lens system at the wide-angle end or the telephoto end.
- the first positive lens group 1502 is responsible for zooming.
- the first positive lens group 1502 moves from the imaging surface side to the object side. And move.
- the first negative lens group 1501 moves along a locus that is convex toward the image sensor 221 so as to correct an image plane change due to the movement of the first positive lens group 1502.
- FIG. 17 shows the lens configuration shown in FIG. 16, in which the position of the first negative lens group 1501 at the time of zooming is fixed with respect to the image sensor, and the second positive lens group 1504 is movable with respect to the image sensor.
- the behavior of zoom lens when zooming is shown.
- the first negative lens group 1501 is fixed to the image sensor, the position of the first group at the wide-angle end and the telephoto end approaches the position of the first group at the intermediate angle of view.
- the image plane shift caused by this can be corrected by moving the second positive lens group 1504 along a locus convex toward the image sensor side.
- the distance between the first negative lens unit and the first positive lens unit is reduced at the time of zooming from the wide angle end to the telephoto end, and the second positive lens unit has a convex arc toward the image sensor.
- This behavior can be explained in the same manner as the behavior of each corresponding lens group in the lens configuration shown in FIG.
- FIG. 18 is an external perspective view showing an example of the stabilizer 800.
- the stabilizer 800 is another example of the moving body.
- the camera unit 813 included in the stabilizer 800 may include an imaging device having the same configuration as the imaging device 220.
- the camera unit 813 may include a lens device having the same configuration as the lens device 160.
- the stabilizer 800 includes a camera unit 813, a gimbal 820, and a handle portion 803.
- the gimbal 820 supports the camera unit 813 in a rotatable manner.
- the gimbal 820 has a pan axis 809, a roll axis 810, and a tilt axis 811.
- the gimbal 820 supports the camera unit 813 so as to be rotatable about a pan axis 809, a roll axis 810, and a tilt axis 811.
- the gimbal 820 is an example of a support mechanism.
- the camera unit 813 is an example of an imaging device.
- the camera unit 813 has a slot 812 for inserting a memory.
- the gimbal 820 is fixed to the handle portion 803 via the holder 807.
- the handle portion 803 has various buttons for operating the gimbal 820 and the camera unit 813.
- the handle portion 803 includes a shutter button 804, a recording button 805, and an operation button 806. By pressing the shutter button 804, a still image can be recorded by the camera unit 813.
- the recording button 805 is pressed, a moving image can be recorded by the camera unit 813.
- the device holder 801 is fixed to the handle portion 803.
- the device holder 801 holds a mobile device 802 such as a smartphone.
- the mobile device 802 is communicably connected to the stabilizer 800 via a wireless network such as WiFi. Thereby, an image captured by the camera unit 813 can be displayed on the screen of the mobile device 802.
- the UAV 100 and the stabilizer 800 are taken up as an example of the moving body.
- An imaging device having a configuration similar to that of the imaging device 220 may be attached to a moving body other than the UAV 100 and the stabilizer.
- the imaging device attached to the moving body has been described.
- the imaging device having the same configuration as that of the imaging device 220 is not limited to the imaging device attached to the moving body.
- a configuration similar to that of the imaging device 220 can be applied to a non-lens interchangeable camera such as a so-called compact digital camera.
- the same configuration as the lens device 160 can be applied to an interchangeable lens of a lens interchangeable camera such as a single-lens reflex camera.
- the same configuration as the lens device 160 can be applied to the configurations of various lens devices for imaging.
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Abstract
Description
特許文献1 特開2006-208889号公報
特許文献2 特開2011-133739号公報
-1.8<f1/fw<-1.1
を満足してよい。
v1>60
v2>60
v3>60
を満足してよい。
n4>1.9
v4<35
を満足してよい。
v>60
を満足してよい。第1の正レンズ群の焦点距離をf2とすると、条件式
1.0<f2/fw<1.8
を満足してよい。
v1>60 (条件式1)
v2>60 (条件式2)
v3>60 (条件式3)
を満足することが好ましい。
-1.8<f1/fw<-1.1 (条件式4)
を満足することが好ましい。条件式4の下限を満足する、すなわち、第1レンズ群301の屈折力を所定の下限閾値より高くすることで、レンズ系300を小型化することができる。条件式4の上限を満足する、すなわち第1レンズ群301の屈折力を所定の上限閾値より高くしないことで、結像特性を高めることができる。
1.0<f2/fw<1.8 (条件式5)
を満足することが好ましい。条件式5の上限を満足する、すなわち、第2レンズ群302の屈折力を所定の下限閾値より高くすることで、レンズ系300を小型化することができる。条件式5の下限を満足する、すなわち、第2レンズ群302の屈折力を所定の上限閾値より高くしないことで、結像特性を高めることができる。
n4>1.9 (条件式6)
v4<35 (条件式7)
を満足することが好ましい。第1レンズ群301が有する正レンズが条件式6及び条件式7を満足することで、第1レンズ群301の光軸方向の厚みを薄くすることができる。これにより、レンズ系300の全長の短縮化に寄与する。
x=cy2/(1+(1-(1+κ)c2y2)1/2)+Ay4+By6+Cy8+Dy10
なお、「x」はサグ量とも呼ばれる。「y」は像高とも呼ばれる。近軸曲率は、曲率半径の逆数である。
x=cy2/(1+(1-(1+κ)c2y2)1/2)+Ay4+By6+Cy8+Dy10+Ey12
50 コントローラ
52 操作部
54 表示部
100 UAV
101 UAV本体
102 インタフェース
104 制御部
106 メモリ
110 ジンバル
112 制御部
114、116、118 ドライバ
124、126,128 駆動部
130 支持機構
134、136、138 回転機構
140 撮像部
160 レンズ装置
161 駆動機構
162 制御部
163 メモリ
220、230 撮像装置
221 撮像素子
222 制御部
223 メモリ
231 撮像素子
232 制御部
233 メモリ
234 制御部
235 レンズ
300 レンズ系
301 第1レンズ群
302 第2レンズ群
303 第3レンズ群
304 第4レンズ群
800 スタビライザ
801 デバイスホルダ
802 モバイルデバイス
803 持ち手部
804 シャッターボタン
805 録画ボタン
806 操作ボタン
807 ホルダ
809 パン軸
810 ロール軸
811 チルト軸
812 スロット
813 カメラユニット
820 ジンバル
900 レンズ系
901 第1レンズ群
902 第2レンズ群
903 第3レンズ群
904 第4レンズ群
1501 第1の負レンズ群
1502 第1の正レンズ群
1504 第2の正レンズ群
Claims (16)
- 物体側より順に、負屈折力を有する第1の負レンズ群と、正屈折力を有する第1の正レンズ群と、正屈折力を有する第2の正レンズ群とを備え、広角端から望遠端への変倍時に前記第1の負レンズ群から撮像素子までの間隔が一定で、前記第1の負レンズ群と前記第1の正レンズ群との間隔が減少し、前記第2の正レンズ群が前記撮像素子に向けて凸の弧の軌跡で移動する
ズームレンズ。 - 前記第1の正レンズ群と前記第2の正レンズ群との間に、負の屈折力を有する第2の負レンズ群をさらに備える
請求項1に記載のズームレンズ。 - 広角端から望遠端への変倍時に、前記第2の負レンズ群と前記第2の正レンズ群の間隔が広がる
請求項2に記載のズームレンズ。 - 前記第2の正レンズ群は、望遠端時に、広角端時よりも前記撮像素子の近くに位置する
請求項1から3のいずれか一項に記載のズームレンズ。 - 前記第1の負レンズ群の焦点距離をf1、全系の広角端の焦点距離をfwとすると、条件式
-1.8<f1/fw<-1.1
を満足する
請求項1から3のいずれか一項に記載のズームレンズ。 - 前記第1の負レンズ群が、物体側から順に、それぞれ負、負、負、正の屈折力を有する4つのレンズを含み、前記第1の負レンズ群に含まれる前記負の屈折力を有する3つのレンズのアッベ数をそれぞれv1、v2及びv3とすると、条件式
v1>60
v2>60
v3>60
を満足する
請求項1から3のいずれか一項に記載のズームレンズ。 - 前記第1の負レンズ群が、物体側から順に、それぞれ負、負、負、正の屈折力を有する4つのレンズを含み、前記第1の負レンズ群に含まれる前記負の屈折力を有する3つのレンズのうち物体側の2つのレンズの少なくとも1つが、非球面レンズである
請求項1から3のいずれか一項に記載のズームレンズ。 - 前記第1の負レンズ群が、物体側から順に、それぞれ負、負、負、正の屈折力を有する4つのレンズを含み、前記第1の負レンズ群の前記正の屈折力を有するレンズの屈折率をn4、アッベ数をv4とすると、条件式
n4>1.9
v4<35
を満足する
請求項1から3のいずれか一項に記載のズームレンズ。 - 前記第1の正レンズ群は、少なくとも3つの凸レンズを含み、前記第1の正レンズ群が含む全ての前記凸レンズが条件式
v>60
を満足し、
前記第1の正レンズ群の焦点距離をf2とすると、条件式
1.0<f2/fw<1.8
を満足する
請求項1から3のいずれか一項に記載のズームレンズ。 - 前記第2の正レンズ群及び前記第2の負レンズ群の少なくとも一方は、単一のレンズ又は接合レンズから構成され、前記第2の正レンズ群及び前記第2の負レンズ群の前記少なくとも一方がフォーカス機能を担う
請求項2又は3に記載のズームレンズ。 - 前記第2の正レンズ群及び前記第2の負レンズ群の少なくとも一方は、単一のレンズ又は接合レンズから構成され、前記第2の正レンズ群及び前記第2の負レンズ群の前記少なくとも一方が防振機能を担う
請求項2又は3に記載のズームレンズ。 - 前記第1の正レンズ群を構成する最も物体側のレンズが、正の屈折力を有する単レンズで非球面レンズである
請求項1から3のいずれか一項に記載のズームレンズ。 - 請求項1から3のいずれか一項に記載のズームレンズと、
前記撮像素子と
を備える撮像装置。 - 請求項1から3のいずれか一項に記載のズームレンズを備えて移動する移動体。
- 前記移動体は無人航空機である
請求項14に記載の移動体。 - 請求項1から3のいずれか一項に記載のズームレンズと、
前記ズームレンズを変位可能に支持する支持機構と、
前記支持機構に取り付けられている持ち手部と
を備えるシステム。
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2016/082365 WO2018078887A1 (ja) | 2016-10-31 | 2016-10-31 | ズームレンズ、撮像装置、移動体及びシステム |
| JP2017559712A JP6450950B2 (ja) | 2016-10-31 | 2016-10-31 | ズームレンズ、撮像装置、移動体及びシステム |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2016/082365 WO2018078887A1 (ja) | 2016-10-31 | 2016-10-31 | ズームレンズ、撮像装置、移動体及びシステム |
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|---|---|
| WO2018078887A1 true WO2018078887A1 (ja) | 2018-05-03 |
Family
ID=62024651
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| WO (1) | WO2018078887A1 (ja) |
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| JP2019133072A (ja) * | 2018-02-01 | 2019-08-08 | 株式会社タムロン | ズームレンズおよび撮像装置 |
| JP2020030301A (ja) * | 2018-08-22 | 2020-02-27 | キヤノン株式会社 | ズームレンズ及びそれを有する撮像装置 |
| US20210132346A1 (en) * | 2019-11-01 | 2021-05-06 | Panasonic Intellectual Property Management Co., Ltd. | Imaging optical system, image capture device, and camera system |
| JP2021076829A (ja) * | 2019-11-01 | 2021-05-20 | パナソニックIpマネジメント株式会社 | 撮像光学系、撮像装置、カメラシステム |
| JP2024076793A (ja) * | 2022-11-25 | 2024-06-06 | キヤノン株式会社 | ズームレンズ、およびそれを有する撮像装置、撮像システム |
| JP2024092051A (ja) * | 2019-02-22 | 2024-07-05 | 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 |
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| WO2020012638A1 (ja) * | 2018-07-13 | 2020-01-16 | 株式会社ニコン | 変倍光学系、光学機器、および変倍光学系の製造方法 |
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| JP2005338344A (ja) * | 2004-05-26 | 2005-12-08 | Konica Minolta Photo Imaging Inc | 撮像レンズ装置 |
| JP2007108696A (ja) * | 2005-09-13 | 2007-04-26 | Olympus Imaging Corp | 結像光学系及びそれを有する電子撮像装置 |
| JP2012027262A (ja) * | 2010-07-23 | 2012-02-09 | Olympus Imaging Corp | ズームレンズ及びそれを備えた撮像装置 |
-
2016
- 2016-10-31 WO PCT/JP2016/082365 patent/WO2018078887A1/ja not_active Ceased
- 2016-10-31 JP JP2017559712A patent/JP6450950B2/ja not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1048521A (ja) * | 1996-08-08 | 1998-02-20 | Konica Corp | ズームレンズ |
| JP2005338344A (ja) * | 2004-05-26 | 2005-12-08 | Konica Minolta Photo Imaging Inc | 撮像レンズ装置 |
| JP2007108696A (ja) * | 2005-09-13 | 2007-04-26 | Olympus Imaging Corp | 結像光学系及びそれを有する電子撮像装置 |
| JP2012027262A (ja) * | 2010-07-23 | 2012-02-09 | Olympus Imaging Corp | ズームレンズ及びそれを備えた撮像装置 |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2019133072A (ja) * | 2018-02-01 | 2019-08-08 | 株式会社タムロン | ズームレンズおよび撮像装置 |
| JP7055652B2 (ja) | 2018-02-01 | 2022-04-18 | 株式会社タムロン | ズームレンズおよび撮像装置 |
| JP2020030301A (ja) * | 2018-08-22 | 2020-02-27 | キヤノン株式会社 | ズームレンズ及びそれを有する撮像装置 |
| JP2024092051A (ja) * | 2019-02-22 | 2024-07-05 | 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 |
| US20210132346A1 (en) * | 2019-11-01 | 2021-05-06 | Panasonic Intellectual Property Management Co., Ltd. | Imaging optical system, image capture device, and camera system |
| JP2021076829A (ja) * | 2019-11-01 | 2021-05-20 | パナソニックIpマネジメント株式会社 | 撮像光学系、撮像装置、カメラシステム |
| JP7457947B2 (ja) | 2019-11-01 | 2024-03-29 | パナソニックIpマネジメント株式会社 | 撮像光学系、撮像装置、カメラシステム |
| US12085700B2 (en) * | 2019-11-01 | 2024-09-10 | Panasonic Intellectual Property Management Co., Ltd. | Imaging optical system, image capture device, and camera system |
| JP2024076793A (ja) * | 2022-11-25 | 2024-06-06 | キヤノン株式会社 | ズームレンズ、およびそれを有する撮像装置、撮像システム |
Also Published As
| Publication number | Publication date |
|---|---|
| JP6450950B2 (ja) | 2019-01-16 |
| JPWO2018078887A1 (ja) | 2018-10-25 |
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