WO2006057399A1 - ズームレンズ装置 - Google Patents
ズームレンズ装置 Download PDFInfo
- Publication number
- WO2006057399A1 WO2006057399A1 PCT/JP2005/021847 JP2005021847W WO2006057399A1 WO 2006057399 A1 WO2006057399 A1 WO 2006057399A1 JP 2005021847 W JP2005021847 W JP 2005021847W WO 2006057399 A1 WO2006057399 A1 WO 2006057399A1
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- WO
- WIPO (PCT)
- Prior art keywords
- zoom
- lens
- focus
- lens group
- driving force
- Prior art date
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Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
- G02B7/10—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification by relative axial movement of several lenses, e.g. of varifocal objective lens
- G02B7/102—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification by relative axial movement of several lenses, e.g. of varifocal objective lens controlled by a microcomputer
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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
- G02B15/143—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 three groups only
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H27/00—Step-by-step mechanisms without freewheel members, e.g. Geneva drives
- F16H27/04—Step-by-step mechanisms without freewheel members, e.g. Geneva drives for converting continuous rotation into a step-by-step rotary movement
- F16H27/06—Mechanisms with driving pins in driven slots, e.g. Geneva drives
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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
Definitions
- the present invention relates to a zoom lens device that is mounted on a camera or the like and has a plurality of lens groups, and in particular, relates to a zoom lens device that includes a zoom mechanism that changes in a step force step of the lens groups. .
- Multifocal magnification with a step zoom mechanism that is mounted on a camera that allows multiple lens groups to move between a short focal length position and a long focal length position A switching lens barrel is disclosed in Japanese Patent Laid-Open No. 9-329733.
- a fixed cylinder is inserted into a rotating cylinder, and a first moving cylinder holding a front group lens and a second moving cylinder holding a rear group lens are inserted into the fixed cylinder.
- a first moving cylinder holding a front group lens and a second moving cylinder holding a rear group lens are inserted into the fixed cylinder.
- the rotating cylinder is provided with a zoom cam groove for the front lens group and a zoom cam groove for the rear lens group for guiding the first and second movable cylinders, respectively.
- the fixed cylinder is formed with a focus adjustment cam groove having an inflection portion and a guide groove for guiding the first moving cylinder.
- a cam pin that engages with the zoom lens cam groove and the guide groove for the front lens group is formed on the first moving cylinder, and the zoom cam groove and the focus adjustment cam groove for the rear lens group are formed.
- An engaging cam pin is formed on the second moving cylinder!
- a gear portion is provided on the outer peripheral surface of the rear end portion of the rotating cylinder, and the rotating cylinder is rotated about the optical axis as a rotation axis by driving a motor. By rotating the rotating cylinder, zooming and focus adjustment are performed simultaneously.
- the first moving cylinder moves linearly along the guide groove of the fixed cylinder.
- the second moving cylinder bends and moves at the inflection portion of the focus adjustment cam groove, and the amount of movement in the optical axis direction is smaller than that of the first moving cylinder.
- the focal point is adjusted from infinite distance to the closest distance while maintaining a wide state where the magnification of the lens system does not change. In this way, by performing zooming and focus adjustment at each zooming position with the same drive source, miniaturization and low cost of the camera are realized.
- such a multifocal magnification switching lens barrel is provided with a zoom cam groove, a focus adjusting force groove and a guide groove in a rotating cylinder, and is built in a portable electronic device such as a mobile phone.
- a portable electronic device such as a mobile phone.
- this zoom lens apparatus includes a motor 1 as a driving source, a cam 3 formed by a spiral rib projecting from a cylindrical rotating shaft 2, and an imaging element 4. It has a lens system A and so on arranged on the optical axis Z.
- gears (hereinafter referred to as “first gear” and “third gear”) 5 and 6 are attached to the rotation shaft of the motor 1 and the rotation shaft of the cam 3, respectively.
- the first gear 5 and the third gear 6 mesh with an intermediate gear (hereinafter referred to as “second gear”) 7 to transmit the rotational force, but the second gear 7 is omitted. Let the first gear 5 and the third gear 6 mate directly.
- the surface on the outside (left side in the drawing) of the cam 3 is a zoom cam surface 8, and the back side (right side in the drawing) is a focusing cam surface 9.
- a zoom cam surface 8 On the zoom cam surface 8, a plurality of (here, five) flat portions and inclined portions are alternately formed.
- the focus cam surface 9 is formed in an inclined portion.
- the first lens group 11, the second lens group 12, and the third lens group 13 are arranged on the optical axis Z from the outer side to the rear side, and the third lens group 13, the imaging element 4, Are facing each other.
- the role of the second lens group 12 is mainly to change the focal length of the lens system A (zoom operation).
- the role of the third lens group 13 is mainly adjustment of the imaging position of the lens system A, that is, focusing on the image sensor 4 (focus operation).
- the first lens group 11 is held by a holding frame (not shown) that does not move.
- the second lens group 12 and the third lens group 13 are respectively held by holding frames 14 and 15 that individually move in the same direction as the optical axis Z (hereinafter referred to as ⁇ second holding frame '', ⁇ third This is called “holding frame”.) 0
- a pair of guide shafts 16 pass through the second holding frame 14 and the third holding frame 15, and both the holding frames 14 and 15 are guided by the guide shaft 16 and moved.
- One guide shaft 16 has a compression panel for joining a zoom follower portion 17 provided on the second holding frame 14 to the zoom cam surface 8.
- a biasing portion 18 such as a compression panel that joins the focus follower portion 19 provided on the third holding frame 15 to the focusing cam surface 9 is wound and mounted. . Therefore, the cam 3 is always sandwiched between the zoom follower portion 17 and the focus follower portion 19.
- the zoom lens apparatus is configured as described above, and next, the operation will be described with reference to FIG.
- this driving force is transmitted to the rotating shaft 2 of the cam 3 by the first gear 5, the second gear 7, and the third gear 6, and the cam 3 rotates.
- the joint between the zoom follower portion 17 and the zoom cam surface 8 and the joint between the focus follower portion 19 and the focus cam surface 9 are directed outward or rearward along the same direction as the optical axis Z. Moving.
- the zoom follower portion 17 moves on the flat portion as indicated by a characteristic 82 in FIG. While moving, it does not move outward, but only moves while moving on the slope. Therefore, the zoom follower unit 17 and the second lens group 12 move in a step shape, and a zoom operation is performed.
- the zoom lens device described above if the number of steps is set to be compatible with various zooms, the number of flat portions of the zoom cam surface 8 is increased and the diameter of the zoom cam 3 is increased. This is disadvantageous for miniaturization. On the other hand, if the number of steps is reduced, the size can be reduced, but the zoom pattern that can be handled is limited, and the value as a zoom lens device is reduced.
- the movement of the focus mechanism substantially follows the movement of the zoom mechanism. It is assumed that a zoom lens system based on such an optical design is used. In addition, the movement trajectory of the lens that performs the zoom movement is partially allocated to the focus movement!
- the locus force that the locus of the focus movement follows the zoom movement greatly deviates.
- the step zoom that is suitable for practical use by applying the configuration of the conventional example. It is difficult to realize the operation.
- the lens movement locus for the focus movement In a zoom optical system that performs a focus movement by moving a lens group close to the imaging plane side, the lens movement locus for the focus movement often follows substantially the zoom movement. On the other hand, in a zoom optical system in which the focus movement is close to the subject and the lens group is moved, the lens movement locus for the focus movement may deviate significantly from that of the zoom movement in winter. Therefore, it becomes difficult to construct a step zoom lens apparatus using the configuration of the conventional example in the latter zoom optical system.
- the latter zoom optical system is designed in such a way that it is easy to maintain focus accuracy even if the former does not satisfy high design accuracy because the amount of movement of the focus movement is often larger than the former. Have merit. Nevertheless, because of the problems described above, it was difficult to provide a high-quality zoom lens apparatus using such a zoom optical system.
- the present invention provides a zoom lens apparatus that can perform a zoom operation with a number of steps that can be miniaturized and that can fully exhibit the value of a zoom lens.
- the present invention is effective in improving the quality, such as a zoom optical system in which the focus movement is performed by moving the lens group close to the subject side, but the lens movement locus for the focus movement is zoomed. It is an object of the present invention to provide a zoom lens apparatus that can use an optical system having characteristics that deviate greatly from that of motion.
- the zoom lens device includes a lens system in which a plurality of lens groups are arranged on the optical axis. Move at least one of the lens groups in the same direction as the optical axis A zoom mechanism for changing the focal length of the lens system is provided. It also has a force mechanism that adjusts the imaging position of the lens system by moving one or more lens groups in the same direction as the optical axis.
- the zoom lens apparatus further includes a driving force transmission unit that transmits driving force from one driving source to the zoom mechanism and the focus mechanism.
- the driving force transmission unit includes an intermittent transmission mechanism that intermittently transmits the driving force of the driving source force to the zoom mechanism.
- the intermittent transmission mechanism repeats the state where the zoom mechanism force Si or more lens groups are stopped and moved. It can be moved stepwise in the same direction as the optical axis.
- the focusing mechanism moves more than one lens group continuously in the same direction as the optical axis.
- the intermittent transmission mechanism is preferably a Geneva mechanism.
- the Geneva mechanism is a combination of a driving vehicle and a driven vehicle, and the driving vehicle is formed with an arc-shaped convex portion, and one pin is provided outside the arc-shaped convex portion. It is.
- the driven vehicle has an arcuate concave surface that engages with the arcuate convex surface and a plurality of radial grooves into which pins are engaged.
- the driving force of one drive source is transmitted to the prime mover, and the follower rotates only while the pin of the rotating prime mover is engaged in the radial groove of the follower, and the pin comes off the radial groove. And the follower stops.
- the zoom operation is performed by moving the lens group.
- the zoom operation is stopped by stopping this lens group. That is, this lens group is moved stepwise by a Geneva mechanism, and a zoom operation is performed. And The focus mechanism operates while the lens group is stopped, and the focus operation is performed by moving the lens group.
- the intermittent transmission mechanism is configured by the Geneva mechanism, and the number of steps of the step zoom can be set according to the number of radial grooves of the driven vehicle.
- the intermittent transmission mechanism is configured by the Geneva mechanism, and the number of steps of the step zoom can be set according to the number of radial grooves of the driven vehicle.
- the intermittent transmission mechanism may be a normal index cam mechanism.
- the parallel index cam is a combination of a driving vehicle and a driven vehicle, and the driving vehicle has a plate cam formed with a bulging portion.
- a driven vehicle has a plurality of pins joined to a plate cam projecting concentrically on a disk.
- the driving force of one drive source is transmitted to the prime mover, and the driven vehicle rotates only while the bulge of the prime mover applies a rotational force to the pin of the follower, and is driven when the bulge is removed from the pin.
- zooming is performed by moving this lens group.
- the zoom mechanism is stopped by stopping this lens group. That is, this lens group is moved stepwise by a parallel index cam mechanism, and a zoom operation is performed. While the lens group is stopped, the focus mechanism operates, and the focusing operation is performed by moving the lens group.
- the intermittent transmission mechanism is configured by the parallel index cam mechanism, so that the play of the cam mechanism can be reduced while performing a more accurate zoom operation while having a simple configuration. Is advantageous.
- the zoom mechanism includes a zoom follower portion provided on a holding frame that holds a lens group for changing a focal length, and a spiral shape provided in an intermittent transmission mechanism. It is preferable that the zoom cam surface includes a zoom cam surface and a biasing portion that joins the zoom follower portion to the zoom cam surface.
- the zoom follower portion provided on the holding frame that holds the lens group is joined to the spiral zoom cam surface by the urging portion.
- This joint is By moving in the same direction as the optical axis, the lens group held by the holding frame moves on the optical axis. Since the spiral zoom cam surface rotates intermittently by the intermittent transmission mechanism, the holding frame also moves intermittently in the same direction as the optical axis, and the lens group held by this holding frame moves on the optical axis. Move in steps.
- the focus mechanism uses a focus follower section provided on a holding frame that holds a lens group for adjusting the imaging position and a driving force of a driving force transmission section. It is preferable to provide a moving body that moves in the same direction as the optical axis and an urging portion that joins the focus follower to the moving body.
- the force follower portion provided on the holding frame that holds the lens group is joined to the moving body by the urging portion.
- the lens held by the holding frame moves continuously on the optical axis. Therefore, even while the lens group for zoom operation is stopped by the zoom mechanism, the lens group for focus operation moves continuously by the focus mechanism to perform the focus operation.
- the focus mechanism includes a focus follower portion provided on a holding frame that holds a lens group for adjusting the imaging position.
- a spiral focus cam surface that rotates about the same direction as the optical axis by the driving force of the driving force transmission portion, and a biasing portion that joins the focus follower portion to the focus cam surface are provided.
- the force follower portion provided on the holding frame that holds the lens group is joined to the spiral focus cam surface by the biasing portion, and the focus cam surface rotates. To do.
- the joint surface between the focus follower and the focus cam surface moves nonlinearly in the same direction as the optical axis. Therefore, even when the lens group for zoom operation is stopped by the zoom mechanism, the lens group for focus operation moves non-linearly on the optical axis by the focus mechanism to perform the focus operation. .
- the speed at which the lens for focus operation moves is slower than the speed at which the lens for zoom operation moves. Devise as follows.
- the configuration is relatively simple. There is no need to provide a flat portion on the cam traced by the zoom mechanism. As a result, it is possible to secure the number of steps that can fully demonstrate the value as a zoom lens and to reduce the size. Accordingly, a zoom lens device having a step zoom function can be mounted on an ultra-small camera provided in a portable electronic device such as a mobile phone.
- a lens system in which a plurality of lens groups are arranged on the optical axis and one or more lens groups are moved in the same direction as the optical axis. Also provided is at least one zoom mechanism that changes the focal length of the lens system and stops the movement of at least one lens group of the plurality of lens groups for a predetermined period at a plurality of predetermined focal lengths.
- the zoom mechanism includes a focus mechanism that moves one or more lens groups in the same direction as the optical axis by moving the lens system in the same direction as at least one optical axis to adjust the imaging position of the lens system.
- a driving force transmission unit that transmits the driving force to the focus mechanism and the zoom mechanism is provided. During the period when the zoom mechanism is in a state where at least one lens group is stopped, the focus mechanism moves one or more of the zoom mechanisms in the same direction as the optical axis.
- the zoom mechanism moves in a stepwise manner in the same direction as the optical axis so that at least one lens group of the plurality of lens groups is stopped and moved. Step zoom operation is realized.
- the focus mechanism performs focus adjustment by moving one or more of the zoom mechanisms in the same direction as the optical axis.
- the focus movement is more independent of the zoom movement than the movement movement of the lens that performs the zoom movement is partially used for the force movement as in the conventional example. It becomes possible.
- this zoom lens apparatus for example, even when an optical system in which the movement locus of the lens for the focus movement deviates greatly from that of the zoom movement is used, it is possible to cope with the focus adjustment at each zoom step. Therefore, it is possible to provide a step zoom device corresponding to any lens design become.
- the focus movement is generally large, so it is effective to maintain the accuracy and improve the quality of the zoom lens system.
- both the zoom mechanism and the focus mechanism can be driven by a single drive source, it is advantageous for downsizing the device.
- the zoom mechanism may intermittently transmit a driving force as a driving source via an intermittent transmission mechanism.
- the operation of the zoom mechanism can be intermittently stopped by the intermittent transmission mechanism.
- the zoom movement can be stopped intermittently, and the same actions and effects as described above can be achieved.
- the intermittent transmission mechanism for example, when the zoom mechanism traces the cam, it is not necessary to provide a flat portion on the cam as in the conventional example, and the size can be reduced.
- the intermittent transmission mechanism is preferably a Geneva mechanism.
- the Geneva mechanism a prime mover and a follower are combined, and the prime mover has an arc-shaped convex portion and is provided with one pin outside the arc-shaped convex portion.
- the driven vehicle has an arcuate concave surface that engages with the arcuate convex surface and a plurality of radial grooves into which pins are engaged. The driving force of one drive source is transmitted to the driving vehicle, and the driven vehicle rotates only while the rotating driving motor pin is engaged in the radial groove of the driven vehicle, and the pin is removed from the radial groove. When it comes off, the follower stops.
- the intermittent transmission mechanism is configured by the Geneva mechanism in consideration of the above-described operation and effect, and thus the number of steps can be increased while having a simple configuration. This is advantageous in terms of size reduction without sacrificing its use as a zoom lens.
- the intermittent transmission mechanism may be a normal index cam mechanism.
- the normal index cam is a combination of a driving vehicle and a driven vehicle.
- the driving vehicle has a plate cam formed with a bulging portion
- the driven vehicle has a disk with a plurality of pins joined to the plate cam.
- the driving force of one drive source is transmitted to the prime mover, and the driven vehicle rotates only while the bulge of the prime mover applies a rotational force to the pin of the follower, and is driven when the bulge is removed from the pin.
- the zoom mechanism stops at least one lens in the lens group, and light is emitted in steps so as to repeat the state of moving and the state of moving.
- the operation of the so-called step zoom is realized, and in each zoom step (stop state) in the powerful step zoom, the force mechanism is one of the zoom mechanisms.
- Focus adjustment is performed by moving two or more in the same direction as the optical axis. That is, it is possible to make the focus motion highly independent of the zoom motion compared to the case where the movement locus of the lens that performs the zoom motion is partially used for the focus motion as in the conventional example.
- this zoom lens apparatus for example, even when using an optical system in which the movement locus of the lens for the focus movement deviates greatly from that of the zoom movement, it is possible to adjust the focus at each zoom step.
- a step zoom device that supports all lens designs.
- the focus momentum is generally large, which maintains accuracy and is effective in improving the quality of the zoom lens system.
- FIG. 1 is a schematic front view showing a first embodiment of a zoom lens apparatus according to the present invention.
- FIG. 2 is a schematic side view showing the main part of the first embodiment of the zoom lens apparatus according to the present invention.
- FIG. 3A is a cross-sectional view taken along the line Y-Y in FIG. 1 showing an initial operating state of the intermittent transmission mechanism according to the first embodiment of the zoom lens apparatus according to the present invention.
- FIG. 3B is a cross-sectional view taken along line YY of FIG. 1 showing an operation state in the middle of the intermittent transmission mechanism according to the first embodiment of the zoom lens apparatus according to the present invention.
- FIG. 3C is a cross-sectional view taken along the line YY in FIG. 1, showing the final operating state of the intermittent transmission mechanism according to the first embodiment of the zoom lens apparatus according to the present invention.
- FIG. 4 is a diagram showing the trajectory of the lens group in the first embodiment of the zoom lens apparatus according to the present invention.
- FIG. 5 is a schematic front view showing a second embodiment of the zoom lens apparatus according to the present invention.
- FIG. 6 is a diagram showing a locus of a lens group in a second embodiment of the zoom lens apparatus according to the present invention.
- FIG. 7 is a schematic perspective view of the intermittent transmission mechanism in the third embodiment of the zoom lens apparatus according to the present invention.
- FIG. 8 is a schematic front view of a zoom lens device according to Embodiment 4 of the present invention.
- FIG. 9 is a diagram showing a movement locus of the lens group with respect to a change in focal length in the zoom lens apparatus according to Embodiment 4 of the present invention.
- FIG. 10 is a perspective view of a prime mover in a zoom lens apparatus according to Embodiment 4 of the present invention.
- FIG. 11A is a cross-sectional view taken along line YY of FIG. 8 showing an initial operating state of the intermittent transmission mechanism according to the fourth embodiment of the zoom lens apparatus according to the present invention.
- FIG. 11B is a cross-sectional view taken along the line YY in FIG. 8 showing an operating state in the middle of the intermittent transmission mechanism according to the fourth embodiment of the zoom lens apparatus according to the present invention.
- FIG. 11C is a cross-sectional view taken along line YY of FIG. 8 showing the final operating state of the intermittent transmission mechanism according to the fourth embodiment of the zoom lens apparatus according to the present invention.
- FIG. 12A shows a change in the axial direction position of the first cam accompanying the rotation of the prime mover, and shows a state where the prime mover and the follower are joined.
- FIG. 12B shows a change in the axial position of the first cam accompanying the rotation of the prime mover, and shows a state in which the prime mover and the follower are detached!
- FIG. 12C shows a change in the axial position of the first cam accompanying the rotation of the prime mover, and shows a state in which the prime mover and the follower are separated.
- FIG. 12D shows a change in the axial position of the first cam accompanying the rotation of the prime mover, and shows a state where the prime mover and the follower are separated.
- Fig. 12E shows the change in the axial position of the first cam accompanying the rotation of the prime mover. It is a figure which shows the state in which the car and the driven vehicle are united again.
- FIG. 13 is a diagram showing the movement locus of each lens group with respect to the total rotation angle of the motor in the zoom lens apparatus according to Embodiment 4 of the present invention.
- FIG. 14 is a schematic front view of a zoom lens apparatus according to Embodiment 5 of the present invention.
- FIG. 15 is a schematic front view of a conventional zoom lens device.
- FIG. 16 is a diagram showing a locus of a lens group that is useful for a conventional zoom lens device. Explanation of symbols
- This zoom lens apparatus includes a lens system A, a driving force transmission unit B, a focus mechanism C, an intermittent transmission mechanism D, and a zoom mechanism E.
- the lens system A includes a first lens group 11 and a second lens group 12 arranged on the optical axis Z from the outside (left side in FIG. 1) to the back side (right side in FIG. 1).
- the third lens group 13 includes a third lens group 13, and the third lens group 13 faces the image sensor 4.
- the first lens group 11 is held by a holding frame (not shown) that does not move.
- the second lens group 12 and the third lens group 13 are held by a second holding frame 14 and a third holding frame 15 that move individually.
- a pair of guide shafts 16 pass through the second holding frame 14 and the third holding frame 15, and the second lens group 12 and the third lens group 13 are regulated by the guide shaft 16 and are on the optical axis Z. Moving.
- the lens system A changes the focal length (zoom operation) and adjusts the imaging position of the lens system A, that is, the image sensor. Focusing on 4 (focus operation) is performed.
- the second lens group 12 mainly plays a role of zoom operation
- the third lens group 13 mainly plays a role of focus operation.
- the driving force transmission unit B includes a feed screw 20 and the like to which the driving force from the motor 1 as one driving source is transmitted.
- the feed screw 20 is arranged in the same direction as the optical axis Z, and a second gear 7 is attached to the rear end portion so as to mesh with the first gear 5 attached to the motor 1. As the motor 1 rotates, the feed screw 20 rotates.
- a focus mechanism C is provided on the feed screw 20.
- the focus mechanism C includes a moving body 21 such as a nut screwed to the feed screw 20, a focus follower portion 19 provided on the third holding frame 15, and the focus follower portion 19. And an urging portion 18 such as a compression panel to be joined to the outer surface of 21.
- the urging portion 18 is wound around and attached to one guide shaft 16 so as to be interposed between the second holding frame 14 and the third holding frame 15.
- the moving body 21 and the third holding frame 15 continuously move by a minute distance in the same direction as the optical axis Z.
- the position of the third holding frame 15 is detected by the sensor 22.
- This sensor 22 is connected to the controller 23.
- the controller 23 is connected to the power supply 24 and the motor 1 and controls the rotation of the motor 1.
- a driving shaft 25 is provided in parallel with the feed screw 20.
- a third gear 6 that meshes with the second gear 7 is attached to the inner end of the driving shaft 25.
- the feed screw 20 and the driving shaft 25 can be shortened by making the feed screw 20 and the driving shaft 25 separate. Further, by forming a male screw on the driving shaft 25, the feed screw 20 and the driving shaft 25 can be integrated together to save space.
- An intermittent transmission mechanism D is provided at the outer end of the driving shaft 25.
- the intermittent transmission mechanism D is composed of the Geneva mechanism F.
- a driving vehicle 26 attached to the outer end of the driving shaft 25 and a driven vehicle 28 attached to the driven shaft 27 are combined.
- the driven shaft 27 is arranged in parallel with the driving shaft 25.
- the driving vehicle 26 is formed with a projecting portion 31 composed of an arc-shaped convex portion 29 and an arc-shaped concave portion 30, and a pin 32 is provided outside the arc-shaped concave portion 30.
- the driven wheel 28 has a circular angle concave surface 34 that engages with the circular arc shaped convex portion 29 on a disk 33 fixed to the driven shaft 27 and a plurality of radial grooves 35 into which the pins 32 are engaged at a certain angle. It is formed by ⁇ . Note that the force shown by five radial grooves 35 in FIG. 2 is limited to this number. Not.
- Such an intermittent transmission mechanism D driving force is transmitted to the zoom mechanism E.
- the zoom mechanism E includes a zoom follower portion 17 provided on the second holding frame 14, a zoom cam surface 36 formed in a spiral shape on the driven shaft 27, and the zoom follower portion 17 as a zoom cam. And an urging portion 18 such as a compression panel joined to the surface 36.
- the urging unit 18 is the same as the urging unit 18 shown in the conventional example of FIG. 15, and the zoom follower unit 17 is always joined to the zoom cam surface 36! RU
- the joint between the zoom follower portion 17 and the zoom cam surface 36 moves in the same direction as the optical axis Z, and the second lens group 12 moves. Move on the optical axis Z.
- the zoom cam surface 36 also rotates intermittently, and the second lens group 12 moves intermittently on the optical axis Z. .
- the positional relationship between the second lens holding frame 14 or the third lens holding frame 15, the moving body 21, the driving vehicle 26, and the driven vehicle 28 will be described with reference to FIG.
- the moving body 21, the driving vehicle 26, and the driven vehicle 28 are arranged in one row, and the force is a line connecting the pair of guide shafts 16 through which the line connecting the center lines passes through the holding frames 14, 15.
- the zoom lens device is miniaturized. Therefore, when the space of the zoom lens device is sufficient, the moving body 21, the driving vehicle 26, and the driven vehicle 28 may be arranged in a triangular shape.
- the diameter of the follower vehicle 28 in which the five radial grooves 35 are formed in the follower vehicle 28 at a constant angle ⁇ so that the second lens group 12 moves in five steps is as follows. This is half of the five flats formed on the cam 3 as described in the background section above. That is, the diameter of the follower wheel 28 is half that of the cam 3.
- a characteristic 52 shows a state in which the second holding frame 14 and the second lens group move from the back side to the outside in a step shape.
- the third gear 6 meshing with the second gear 7 rotates in the counterclockwise direction CCW, and the driving shaft 25 also rotates in the counterclockwise direction CCW.
- the intermittent transmission mechanism D is activated. That is, as shown in FIG. 3A, the driven vehicle 28 stops until the prime mover 26 rotates in the counterclockwise direction CCW and engages into the adjacent radial groove 35 from the radial groove 35 with the pin 32. ing. Therefore, the second holding frame 14 and the second lens group 12 are stopped at the positions of the total motor rotation angles ql to q2 shown in FIG. 4, and the focal length is reduced by the movement of the third lens group 13. Only the focus operation without changing is performed.
- the driving vehicle 26 rotates and the driven vehicle 28 continues to rotate. Does not rotate. Therefore, the second lens group 12 stops at the positions of the motor total rotation angles q3 to q4 shown in FIG. 4, and only the third lens group 13 moves, and only the focusing operation is performed.
- the driven vehicle 28 and the driven shaft 27 rotate intermittently, and the zoom cam surface provided on the driven shaft 27
- the zoom follower portion 17 and the second lens group 12 of the second holding frame 14 that are joined to 36 move in a step-like manner toward the outer side as well.
- the third lens group 13 is continuous. Therefore, the focus operation is performed accurately.
- this zoom lens device drives the zoom mechanism E via the intermittent transmission mechanism D, it is necessary to provide a flat portion on the cam traced by the zoom mechanism E as in the conventional example. Disappears. Accordingly, it is possible to reduce the size while having the number of steps that can sufficiently exhibit the value as a zoom lens.
- the intermittent transmission mechanism D is configured by the Geneva mechanism F, the intermittent transmission mechanism D can be realized with a small and simple structure, which is advantageous in reducing the size of the zoom lens device.
- the zoom lens device according to the second embodiment is characterized in that the third lens group 13 moves nonlinearly. Therefore, in this zoom lens apparatus, the focusing mechanism C includes a gear train 37 and a spiral focusing cam surface 38.
- the gear train 37 is for reducing the rotational speed of the second gear 7, and is a small gear 39 coaxial with the second gear 7, a large gear 40 meshing with the small gear 39, and a large gear.
- a small gear 41 coaxial with 40 and a large gear 42 meshing with the small gear 41 are configured.
- a rotating shaft 43 in the same direction as the optical axis Z is fixed to the large gear 42, and a focusing cam surface 38 is provided on the rotating shaft 43.
- a focus follower portion 19 provided on the third holding frame 15 is joined to the focus cam surface 38.
- the focus follower portion 19 is not detached from the focus cam surface 38 by the gear train 37.
- the focus follower portion 19 is always joined to the cam surface by the urging portion 18.
- This urging portion 18 is a urging portion for joining the zoom follower portion 17 provided on the second holding frame 14 to the zoom cam surface 36 formed on the driven shaft 27 in the zoom mechanism E. Also used as 18.
- Other configurations of the second embodiment are the same as those of the first embodiment. Next, the operation will be described.
- the first gear 5 rotates counterclockwise CCW
- the second gear that meshes with the first gear 5 Gear 7 rotates clockwise CW.
- the rotational speed is reduced by the gear train 37, and the rotary shaft 43 rotates in the clockwise direction CW.
- the portion where the focus cam surface 38 and the force follower part 19 are joined moves in the same direction as the optical axis Z and the rear side force also moves outward, and the focus follower part 19 is provided.
- the third lens group 13 held by the holding frame 15 of 3 moves on the optical axis Z in the outward direction.
- the third lens group 13 is non-linearly shown in FIG. Moving. Therefore, when the lens system A has a non-linear optical design, the third lens group 13 of the second embodiment is smoother than the third lens group 13 of the first embodiment, and It can move accurately.
- the third gear 6 meshes with the second gear 7 and rotates counterclockwise CCW, and the driving shaft 25 also rotates counterclockwise.
- the intermittent transmission mechanism D operates in the same manner as in the first embodiment. That is, as shown in FIG. 3, the driven wheel 28 and the driven shaft 27 rotate only while the pin 32 rotates while being engaged in the radial groove 35, and are provided on the driven shaft 27.
- the third lens group 13 moves nonlinearly as described above, so that the focusing operation is performed accurately.
- the third embodiment is characterized in that the intermittent transmission mechanism D is a parallel index cam mechanism G as shown in FIG.
- Other configurations are the same as those of the zoom lens device according to the first or second embodiment.
- the normal index cam mechanism G is a combination of the prime mover 44 and the follower 45.
- the vehicle 44 is formed by forming a bulging portion 47 on a plate cam 46.
- the follower wheel 45 has a plurality of pins 48 connected to the plate cam 46 (the number of forces is four in the drawing is not limited) 48 that protrudes concentrically from a disk 49.
- the bulging portion 47 applies a rotational force to the pin 48, the driven vehicle 45 is rotated.
- the driving vehicle 44 is fixed to the driving shaft 25 and the driven vehicle 45 is fixed to the driving shaft 27.
- the zoom mechanism E is also stopped and the second lens group 12 is also stopped. In this way, the second lens group 12 is moved stepwise by the normal index cam mechanism G.
- the focus mechanism C operates while the zoom mechanism E is stopped, and the focus operation is performed by moving the third lens group 13.
- the intermittent transmission mechanism D is configured by the parallel index cam mechanism G, whereby the intermittent transmission mechanism D can be realized with a small and simple structure, and the zoom lens device can be downsized. It is advantageous in planning.
- the intermittent transmission mechanism D is not limited to the general mechanism F or the parallel index cam mechanism G.
- a combination of a rotating claw and a claw wheel or a combination of a pin wheel and a gear is adopted. I can do it.
- Embodiment 4 of the present invention will be described with reference to FIG.
- This zoom lens apparatus includes a lens system A100, a driving force transmission unit BIOO, and an intermittent transmission mechanism C1. 00, zoom mechanism D100 and focus mechanism E100.
- the lens system A100 includes a first lens group 111 and a second lens arranged on the optical axis Z100 from the subject side (left side in FIG. 8) to the imaging surface side (right side in FIG. 8). It consists of a group 112 and a third lens group 113.
- the third lens group 113 faces the image sensor 120 and is held by a holding frame (not shown) that does not move.
- the first lens group 111 and the second lens group 112 are held by a first holding frame 114 and a second holding frame 115 that move individually.
- a pair of guide shafts 116 penetrates the first holding frame 114 and the second holding frame 115, and the first lens group 111 and the second lens group 112 are regulated by the guide shaft 116 and light. It moves on axis Z100.
- the lens system A100 changes the focal distance (zoom operation) and adjusts the imaging position of the lens system A100, that is, captures an image. Focusing on the element 120 (focus operation) is performed.
- Each lens group is optically designed such that the second lens group 112 mainly plays a role of zoom operation, and the first lens group 111 mainly plays a role of focus operation.
- the first lens group 111 and the second lens group 112 are zoomed, that is, when the focal length changes, an example of the locus of each optical axis direction position is as shown in FIG. 9, for example. .
- the characteristic 62 is the position of the first lens group 111 that forms an image with respect to the nearest point
- the characteristic 64 is the position of the first lens group 111 that forms an image with respect to infinity
- the characteristic 66 is The movement locus of the second lens group 112.
- the driving force transmission unit B100 includes a gear train 103, a final gear 131, and the like.
- the driving force from the motor 102 which is one drive source, is transmitted via the gear train 103.
- the gear 131 at the final stage can rotate together with the prime mover 104, and the driving force from the motor 102 is transmitted to the intermittent transmission mechanism C100 via the prime mover 104.
- the intermittent transmission mechanism C100 includes a Geneva mechanism F100.
- the Geneva mechanism F100 is attached to the prime mover 104 attached to the drive shaft 141 and the follower shaft 151. It is configured in combination with the following driven vehicle 105.
- the driving vehicle 104 is formed with a projecting portion 144 including an arc-shaped convex portion 142 and an arc-shaped concave portion 143, and further to the outside of the arc-shaped concave portion 143.
- Pin 107 is provided.
- the follower wheel 105 has a plurality of arcuate concave surfaces 153 that engage with the arcuate convex portions 142 and a plurality of pins 107 (five in the drawing).
- the radial groove 154 is not limited to five forces), and is formed at a constant angle ⁇ .
- the zoom mechanism D100 includes a first cam 109, a second cam 123, a cam follower 117 provided on the first holding frame 114 of the first lens group 111, and a second cam of the second lens group 112. And a cam follower 118 provided on the holding frame 115.
- the cam surface 121 is formed on the first cam 109, and the cam follower 117 of the first lens group 111 of the lens system comes into contact with the cam surface 121.
- the contact is maintained with an appropriate pressing force by a spring (not shown).
- a second cam 123 is arranged on the same axis as the first cam 109.
- the second cam 123 is configured to be rotatable around the driven shaft 151 and not movable in the axial direction.
- the first cam 109 and the second cam 123 are fitted by a key 124 and a key groove 125.
- the rotational torque of the first cam 109 is transmitted to the second cam 123.
- the key 124 and the keyway 125 are fitted with each other so that the first cam 109 does not come off even if it moves in the axial direction.
- a cam surface 126 is formed on the second cam 123.
- a cam follower 118 of the second lens group 112 of the lens system comes into contact with the cam surface 126. The contact is maintained with an appropriate pressing force by a spring (not shown).
- the driving force from the motor 102 is also applied to the focus mechanism E100 via the prime mover 104. Communicated.
- the focus mechanism E100 includes a prime mover 104 having a cam surface 8 formed on the right side in the drawing, a cam follower 117 of the first lens group 111, and a first cam 109.
- the cam surface 108 is formed in a shape that draws a V-shape or U-shape in the circumferential direction and returns to the initial position.
- a perspective view of the prime mover 104 provided with such a cam surface 108 is shown in FIG.
- the first cam 109 is configured to rotate and move integrally with the driven vehicle 105, and typically the first cam 109 forms a part of the driven vehicle 105.
- the first cam 109 is arranged to contact the cam surface 108 of the prime mover 104 at a contact point P100 at the left end. The contact is maintained with an appropriate pressing force by a spring (not shown).
- the first cam 109 and the follower wheel 105 that is integral with or part of the first cam 109 are configured to be rotatable around the follower shaft 151 and to be parallel to the follower shaft 151 in the axial direction. Yes.
- the driven vehicle 104 rotates in the counterclockwise direction CCW until the pin 107 engages with the adjacent radial groove 154 from the radial groove 154 where the pin 107 is engaged. 1 05 is stopped. Accordingly, the first cam 109 and the second cam 123 do not rotate, and the first lens group 111 and the second lens group 112 of the lens system contacting the respective cams are in a state where the zoom operation is stopped.
- the pin 107 provided on the rotating motor vehicle 104 is engaged in the radial groove 154, and as shown in FIG. 11C, the pin 107 is in the radial groove.
- the driven vehicle 105 rotates clockwise CW by an angle ⁇ .
- the driven shaft 151 also rotates by an angle ⁇ , which causes the first cam 109 and And the second cam 123 also rotates by an angle ⁇ , and the first lens group 111 and the second lens group 112 of the lens system contacting the respective cams are moved in the optical axis direction by a predetermined amount defined by the curve of the cam surface.
- the zoom operation proceeds by one step.
- the continuous rotational motion supplied from the motor 102 is converted into an intermittent motion that repeats the rotational motion period and the rotation stop period, and the first cam 109 and the second cam 123 are transferred. Communicated.
- the cam surface 108 is V-shaped or U-shaped in the circumferential direction and returns to the initial position, so the first cam is rotated as the prime mover 104 rotates. 109 will move in one reciprocal translation in the axial direction. Then, the angle of formation around the axis of the cam surface 108 is designed appropriately with the position of the pin 107 as a reference, and during the period when the pin 107 is engaged with one of the five radial grooves 1 54 of the driven vehicle 105, The one cam 109 does not move in the axial direction, and is configured to make one reciprocal movement in the axial direction during the period when the five radial grooves 154 are not mixed with each other.
- FIGS. 12A to 12E show how the first cam 109 moves in the axial direction.
- the pin 107 of the prime mover 104 is continuously removed from the follower 105, and the first cam 109 is a V-shaped or U-shaped cam surface 108 of the prime mover 104. It reaches the valley of the character-shaped part and reaches the left end in the figure. At this time, the first lens group 111 moves to the leftmost end in the focusing operation. On the other hand, since the rotational driving force is not transmitted to the driven vehicle 105, the zoom operation remains stopped.
- the first cam 109 continues to be the V-shape or the cam surface 108 of the prime mover 104 while the pin 107 of the prime mover 104 is disengaged from the follower 105. Return to the initial position beyond the U-shaped part and return to the right end in the figure. At this time, the first lens group 111 returns to the rightmost end in the focusing operation. On the other hand, since the rotational driving force is not transmitted to the driven vehicle 105, the zoom operation remains stopped.
- the pin 107 of the prime mover 104 is re-engaged with the follower 105, and the drive force is transmitted to the follower 105.
- the first cam 109 abuts at a portion other than the V-shaped or U-shaped portion of the force surface 108 of the prime mover 104, and the driven wheel 105 and the first cam 109 do not move in the axial direction.
- the first lens group 111 does not move independently and the focusing operation is not performed.
- the driving force is transmitted to the driven vehicle 105, the rotational driving force is transmitted to the first force 109 and the second cam 123, and the zoom operation is started.
- FIG. 13 shows movement trajectories of the first lens group 111 and the second lens group 112 based on the above operation.
- FIG. 13 shows the total rotation angle of the motor 102 with the horizontal axis.
- the horizontal axes q 1, q3, q5, and q9 represent the positions indicated by solid lines in pin 107 in Fig. 11A, and q2, q 4, q6, and q8 are indicated by broken lines in pin 107 in Fig. 11A. Represents the position.
- the characteristic 72 (broken line) is the position of the first lens group 111 that forms an image with respect to the nearest point
- the characteristic 74 (dotted line) is the first lens that forms an image with respect to infinity.
- Position of group 111 special
- the characteristic 76 (solid line) represents the movement locus of the first lens group 111
- the characteristic 78 (two-dot chain line) represents the movement locus of the second lens group 112.
- the sections F1 to F5 are sections in which the first cam 109 and the second cam 123 do not rotate and only the first cam 109 reciprocates in parallel.
- the sections Z1 to Z4 are sections in which the first cam 109 and the second cam 123 rotate. That is, sections F1 to F5 correspond to each zoom step, and sections Z1 to Z4 correspond to the transition period between adjacent steps.
- the first lens group in each of the sections F1 to F5 as indicated by the characteristic 76 (solid line) in the figure. From the position Pf [i] 'Pf [i]' (l ⁇ i ⁇ 5) where 111 tracks correspond to imaging at infinity, the position corresponding to imaging to the nearest point Pn [i] ⁇ ⁇ It can be configured to cover the range up to [ ⁇ ], (l ⁇ i ⁇ 5). Therefore, according to the configuration, in each zoom step, only the first lens group 111 can be moved to realize the focusing operation.
- the focus operation at each zoom step may use the range of Pn [i] to Pf [i] (l ⁇ i ⁇ 5). You can use the range [i], (1 ⁇ i ⁇ 5), or you can use both.
- a sensor 134 is installed in the vicinity of the second lens group 112 of the lens system.
- the amount of movement of the second lens group 112 is detected by the sensor 1 34 and sent to the controller 132.
- the controller 132 monitors the detected movement amount, and drives and controls the motor 102 using the electric power supplied from the power source 133.
- the installation location of the sensor 134 is not necessarily limited to this. For example, installing the sensor 134 at a position where the rotation angle of the first cam 109 or the second cam 123 is detected has the same effect.
- the rotation of the motor is the counterclockwise direction (CCW), but the operation is the same in the reverse clockwise direction (CW).
- the zoom mechanism D100 stops the first lens group 111 and the second lens group 112, and repeats the state in which the first lens group 111 and the second lens group 112 are moved.
- a so-called step zoom operation is realized by moving in the direction.
- the focus mechanism E100 performs the focus adjustment by moving the first cam 109 in the same direction as the optical axis.
- the focus movement can be made to correspond to the high-speed movement independent of the zoom movement, compared to the case where the movement locus of the lens that performs the zoom movement is partially used for the focus movement as in the conventional example.
- the focus adjustment is performed at each zoom step. Therefore, it becomes possible to provide a step zoom device that supports all lens designs.
- the focus movement is performed by moving the first lens group 111 close to the subject side, and since the focus momentum is generally large, accuracy is maintained and it is effective for immediately improving the quality of the zoom lens apparatus.
- Embodiment 5 of the zoom lens apparatus according to the present invention will be described with reference to FIG.
- Embodiment 5 is characterized in that the intermittent transmission mechanism C100 shown in FIG. 8 is a normal index cam mechanism G100 as shown in FIG.
- Other configurations are the same as those of the zoom lens apparatus according to the fourth embodiment.
- the parallel index cam mechanism G100 is a combination of the driving vehicle 140 and the driven vehicle 150, and the driving vehicle 140 is formed by forming a bulging portion 147 on a plate cam 146.
- the follower vehicle 150 is configured by concentrically projecting a plurality of pins 148 (not limited to four in the drawing) that are joined to the plate cam 146 on a disk 149.
- the bulging portion 147 applies a rotational force to the pin 148 so that the driven vehicle 150 rotates.
- the driving vehicle 140 is fixed to the driving shaft 141, and the driven vehicle 150 is fixed to the driving shaft 151.
- the driven vehicle 150 rotates only while the bulging portion 147 of the driving vehicle 140 applies a rotational force to the pin 148 of the driven vehicle 150, and when the bulging portion 147 comes off the pin 148, the driven vehicle 150 Stops.
- the zoom mechanism D100 is operated, and the zoom operation is performed by moving the first lens group 111 and the second lens group 112.
- the zoom mechanism D100 is also stopped, and the first lens group 111 and the second lens group 112 are also stopped.
- the first lens group 111 and the second lens group 112 are moved stepwise by the parallel index cam mechanism G100.
- the focusing mechanism E100 operates the first cam 109 in the axial direction to move the first lens group 111, thereby performing a focusing operation.
- the intermittent transmission mechanism C100 is configured by the parallel index cam mechanism G100, so that the same effect as the fourth embodiment can be obtained.
- the intermittent transmission mechanism C100 can be realized with a small and simple structure, which is advantageous in reducing the size of the zoom lens device.
- the intermittent transmission mechanism C100 is not limited to the Geneva mechanism F100 or the parallel index cam mechanism G100.
- a combination of a rotating claw and a claw wheel or a combination of a pin wheel and a gear can be used.
- the zoom lens device according to the present invention is useful in the field of portable electronic devices such as mobile phones that are required to be miniaturized, and thus has high industrial applicability.
- the present invention is suitable for a zoom lens apparatus provided with a so-called step zoom mechanism in which a plurality of focal lengths are selected.
- the present invention has high industrial applicability because it is suitable for a zoom lens apparatus using an optical system in which the lens movement locus for focus movement deviates greatly from that of zoom movement.
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Lens Barrels (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP05811718A EP1830208B1 (en) | 2004-11-29 | 2005-11-29 | ZOOM LENS DEVICE with a Geneva mechanism |
US11/719,038 US7760443B2 (en) | 2004-11-29 | 2005-11-29 | Zoom lens device |
CN200580040576XA CN101065700B (zh) | 2004-11-29 | 2005-11-29 | 变焦透镜装置 |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004-343500 | 2004-11-29 | ||
JP2004343500A JP4501654B2 (ja) | 2004-11-29 | 2004-11-29 | ズームレンズ装置および携帯用電子機器 |
JP2005102214A JP4951871B2 (ja) | 2005-03-31 | 2005-03-31 | ズームレンズ装置および携帯用電子機器 |
JP2005-102214 | 2005-03-31 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006057399A1 true WO2006057399A1 (ja) | 2006-06-01 |
Family
ID=36498132
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/021847 WO2006057399A1 (ja) | 2004-11-29 | 2005-11-29 | ズームレンズ装置 |
Country Status (4)
Country | Link |
---|---|
US (1) | US7760443B2 (ja) |
EP (1) | EP1830208B1 (ja) |
TW (1) | TW200624852A (ja) |
WO (1) | WO2006057399A1 (ja) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI436154B (zh) * | 2011-01-31 | 2014-05-01 | Asia Optical Co Inc | The projector's autofocus system |
JP2014067460A (ja) * | 2012-09-24 | 2014-04-17 | Toshiba Corp | レンズ駆動装置、情報記録再生装置及び電子機器 |
CN105134930B (zh) * | 2015-09-29 | 2017-08-29 | 天津百利机械装备集团有限公司中央研究院 | 间歇运动生成器 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57133415A (en) * | 1981-02-12 | 1982-08-18 | Oki Electric Ind Co Ltd | Lens switching mechanism |
JPH04102811A (ja) * | 1990-08-22 | 1992-04-03 | Fuji Photo Film Co Ltd | ズームレンズ鏡胴 |
JP2000227623A (ja) * | 1999-02-08 | 2000-08-15 | Konica Corp | カメラ |
JP2002350709A (ja) * | 2001-05-29 | 2002-12-04 | Olympus Optical Co Ltd | ズームカメラ |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH08304686A (ja) * | 1995-04-28 | 1996-11-22 | Nikon Corp | レンズ駆動装置 |
JP2929480B2 (ja) * | 1991-04-16 | 1999-08-03 | オリンパス光学工業株式会社 | ズームカメラ |
JPH09329733A (ja) * | 1996-06-11 | 1997-12-22 | Fuji Photo Optical Co Ltd | 多焦点倍率切換鏡胴 |
US6183087B1 (en) * | 1999-06-11 | 2001-02-06 | Eastman Kodak Company | Geneva mechanism and motion picture projector using same |
JP2001324662A (ja) | 2000-05-16 | 2001-11-22 | Ricoh Co Ltd | レンズ連動機構 |
JP4059483B2 (ja) * | 2002-06-11 | 2008-03-12 | キヤノン株式会社 | 光学装置 |
JP4103678B2 (ja) | 2003-05-16 | 2008-06-18 | 日本電信電話株式会社 | 無線通信サービス登録方法及びシステム |
-
2005
- 2005-11-28 TW TW094141698A patent/TW200624852A/zh not_active IP Right Cessation
- 2005-11-29 US US11/719,038 patent/US7760443B2/en not_active Expired - Fee Related
- 2005-11-29 EP EP05811718A patent/EP1830208B1/en not_active Not-in-force
- 2005-11-29 WO PCT/JP2005/021847 patent/WO2006057399A1/ja active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57133415A (en) * | 1981-02-12 | 1982-08-18 | Oki Electric Ind Co Ltd | Lens switching mechanism |
JPH04102811A (ja) * | 1990-08-22 | 1992-04-03 | Fuji Photo Film Co Ltd | ズームレンズ鏡胴 |
JP2000227623A (ja) * | 1999-02-08 | 2000-08-15 | Konica Corp | カメラ |
JP2002350709A (ja) * | 2001-05-29 | 2002-12-04 | Olympus Optical Co Ltd | ズームカメラ |
Also Published As
Publication number | Publication date |
---|---|
US7760443B2 (en) | 2010-07-20 |
US20090059389A1 (en) | 2009-03-05 |
TW200624852A (en) | 2006-07-16 |
EP1830208B1 (en) | 2012-09-26 |
EP1830208A1 (en) | 2007-09-05 |
TWI376525B (ja) | 2012-11-11 |
EP1830208A4 (en) | 2011-01-12 |
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