JP2007226105A - Lens unit and imaging apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lens unit achieving a variable power moving mechanism for a bending zoom lens, where the subject-side lens group of a bending member moves in a bending optical lens and having the variable power moving mechanism which has simple constitution and is compact, and to provide an imaging apparatus. <P>SOLUTION: The lens unit is equipped with the bending member for bending light, made incident from a subject along a first optical axis in a second optical axis direction nearly perpendicular, and is provided with a first variable power moving member for moving a first holding member holding a lens group closer to the subject side than the bending member in the first optical axis direction so as to vary the power; and a second variable power moving member for moving a second holding member holding a lens group nearer to the imaging device side than the bending member in the second optical axis direction so as to vary the power. It is equipped with an interlocking member for transmitting the driving force of either of the variable power moving members, which is driven by an actuator, to the other variable power moving member. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a lens unit and an imaging apparatus, and more particularly to a lens unit including a magnification changing mechanism of a bending optical system.

  In recent years, with the widespread use of personal computers, digital cameras that can easily capture images into personal computers have become widespread. In addition, it has become common to incorporate a digital camera into an information processing device such as a mobile computer, a mobile phone, and a personal digital assistant (PDA). With the spread of such digital cameras, there is a demand for smaller digital cameras, the lens unit also needs to be smaller, and there is a demand for high-power zoom lenses. A zoom mechanism that can handle this is required.

  In order to reduce the size of the lens unit, a proposal has been made to reduce the size of the digital camera by shortening the depth direction of the digital camera without changing the overall length of the imaging lens even when the magnification is changed. (Patent Documents 1 and 2) In these, a bending member is provided on the optical path, and the optical path is bent by approximately 90 degrees, and then an optical image is formed on the image pickup element by the subsequent lens group.

  However, in the above two documents, the lens unit is certainly small, but the magnification ratio of the imaging lens is small because the lens on the imaging element side is moved from the bending member to change the magnification.

In order to solve this problem, there has been proposed a high-magnification zoom lens that performs zooming by moving the lens on the object side from the bending member together with the lens on the imaging element side from the bending member. (Patent Document 3)
JP 2000-131610 A JP 2004-69808 A Japanese Patent Laid-Open No. 2004-102809

  However, the zoom lens described in Patent Document 3 discloses an optical system that has high aberration and corrects aberrations well and has high performance. However, the zoom lens is arranged before and after the bending member for zooming. A mechanism for moving the formed lens is not disclosed.

  The present invention provides a zooming movement mechanism for moving a subject side lens and an imaging element side lens relative to a bending member in a bending optical zoom lens, and the zooming movement mechanism is simple in configuration and small in size. An object is to provide a lens unit.

  The above problem is solved by the following configuration.

1. A first holding member that is arranged in the first optical axis direction and that holds the first lens group in which a light beam enters from the subject is movable in the first optical axis direction, and a second that is substantially perpendicular to the first optical axis. A bending holding member that holds a bending member that is bent in the optical axis direction of the optical axis, and a second lens group that guides the light beam bent in the second optical axis direction to the image sensor side so as to be movable in the second optical axis direction. In a lens unit that includes a second holding member and an actuator, and performs zooming by moving at least the first lens group and the second lens group,
A first variable magnification moving member that moves the first holding member in the first optical axis direction;
A second variable magnification moving member for moving the second holding member in the second optical axis direction;
A lens unit comprising: an interlocking member that drives one of the variable magnification moving members by the actuator and transmits a driving force of the driven variable magnification moving member to the other variable magnification moving member. .

2. A fixed cylinder fixed to the housing, and a rotating cylinder rotated with respect to the fixed cylinder,
The first variable magnification moving member is composed of at least the rotating cylinder and the fixed cylinder,
The second variable magnification moving member includes a guide portion that moves the second holding member straight in the second optical axis direction,
2. The lens unit according to 1, wherein the interlocking member is configured to convert a rotational force of the rotating cylinder into a straight movement of the guide portion.

  3. The lens unit according to 1 or 2, wherein the actuator drives the first variable magnification moving member.

  4). 4. The lens unit according to claim 2, wherein the linear force that converts the rotational force of the rotating cylinder into the linear movement of the guide portion is intermittently transmitted from the interlocking member to the guide portion.

5). The first holding member is movable between a use position protruding from the housing and a storage position stored in the housing;
When the first holding member is in the use position, the linear force is transmitted to the guide portion, and when the first holding member is moved from the use position to the storage position, the straight force is applied to the guide portion. 5. The lens unit according to 4, wherein the transmission to is interrupted.

6). The second holding member is movable between a use position and a storage position;
The guide portion is configured to move straightly and the second holding member moves to the storage position during a period in which the straight force is not transmitted to the guide portion. 5. The lens unit according to 5.

7). The bending holding member is movable between a bending position where the first optical axis is bent in the second optical axis direction and a retracted position where the optical axis is bent;
The lens unit according to claim 6, wherein the guide unit is moved linearly in conjunction with the movement of the bent holding member to the retracted position, and the second holding member moves to the storage position.

  8). At least a part of the interlocking member is operating at least on the inner diameter side of the outer diameter of the rotating cylinder and further on the imaging element side of the first optical axis direction end of the rotating cylinder on the imaging element side. The lens unit according to any one of 2 to 7, wherein the lens unit is positioned for a certain period of time.

  9. An image pickup apparatus comprising: the lens unit according to any one of 1 to 8; and an image pickup element that receives light guided by the lens unit.

  A bending member that bends light incident from the subject along the first optical axis in a second optical axis direction that is substantially perpendicular to the first optical member. The first holding member that holds the lens group on the subject side from the bending member is the first holding member. A first zooming member that moves in the direction of the optical axis so that zooming is possible, and a second holding member that holds the lens group closer to the image sensor than the bending member is moved in the second optical axis direction so that zooming is possible. A variable magnification moving member, and an actuator that drives one of the variable magnification moving members, and an interlocking member that transmits the driving force of the driven variable magnification moving member to the other variable magnification moving member. By providing the zoom lens, it is possible to achieve a zooming movement mechanism of the bending zoom lens in which the subject side lens group of the bending member moves, and to provide a small lens unit and an imaging apparatus with a simple configuration.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. An appearance of the digital camera 1 is schematically shown in FIG. 1A is a perspective view, and FIG. 1B is a rear view.

  The digital camera 1 includes a substantially rectangular parallelepiped camera casing 10 and a lens unit 12 that protrudes from the camera casing 10 during imaging. The protruding direction of the lens unit 12 is defined as the depth direction, the horizontally long direction of the camera housing 10 is defined as the horizontal direction, and the vertical direction in FIG.

  The digital camera 1 has a lens unit 12, a flash light emitting unit 13, a self-timer lamp 14 on the front surface, a display unit 15 on the back surface, a mode setting switch 16, a cross key 17, a plurality of operation keys 18, a release button 19 on the upper surface, and a power button. 20 is provided.

  The lens unit 12 is a zoom lens, and when in the use position, a part of the lens protrudes from the front surface of the camera housing 10 and further protrudes when the magnification is changed from the wide-angle end to the telephoto end, and the remaining lens portion is bent as described later. The optical axis is bent at a substantially right angle by the member, and is arranged in the lateral direction inside the camera casing 10. In addition, a part of the lens that protrudes during use is retracted when not being used for image capturing and is stored in a storage position in which the camera housing 10 is stored.

  The flash light emitting unit 13 emits flash light that illuminates the subject. The self-timer lamp 14 is lit to indicate that preparation for self-timer imaging is in progress.

  The display unit 15 on the back is made up of a liquid crystal display and displays various information such as the setting status of the digital camera 1 and operation guidance in addition to the captured image. The mode setting switch 16 is a slide type, and is used for setting operation modes such as imaging and reproduction of the digital camera 1. The cross key 17 has four contacts on the top, bottom, left, and right, and is used to move the cursor displayed on the display unit 15. The cross key 17 is also used to adjust the focal length of the lens unit 12. The operation keys 18 are used for settings related to functions of the digital camera 1 such as switching of items to be displayed on the display unit 15 and selection of displayed items. The release button 19 operates in two stages, and is used for an instruction for preparing an image to be recorded when the release button 19 is half-pressed and an instruction for an image to be recorded when the release button 19 is fully pressed.

  FIG. 2 schematically shows the configuration of the digital camera 1. In addition to the lens unit 12 and the display unit 15, the digital camera 1 includes an imaging element 26, a signal processing unit 22, a recording unit 23, an operation unit 24, an imaging lens driving unit 25, and a control unit 27. The image sensor 26 is a CCD area sensor, and outputs a signal indicating the amount of received light for each pixel. The signal processing unit 22 processes the output signal of the image sensor 26 and generates image data representing the captured image. The recording unit 23 records the image data generated by the signal processing unit 22 on a detachable recording medium 23a, and reads the image data from the recording medium 23a for reproducing and displaying the image. The operation unit 24 is a general term for the mode setting switch 16, the cross key 17, the operation key 18, the release button 19, and the power button 20, and transmits information about the button operated by the user to the control unit 27.

  The imaging lens driving unit 25 performs drive control of a motor such as a zoom motor, a focus motor, a shutter / aperture motor for adjusting exposure, and the like. The imaging lens driving unit 25 may be provided in the lens unit 12.

  The control unit 27 controls the operation of each unit of the digital camera 1 in accordance with the control program. When the release button 19 is half-pressed, a preparatory operation for imaging the subject such as setting of an exposure control value or focus adjustment is performed. When the release button 19 is fully pressed, the image sensor 26 is exposed, a predetermined image processing is performed on the image signal obtained by the exposure, and a series of imaging operations for recording on the recording medium 23a is executed. Have.

  Next, the configuration of the lens unit 12 will be described.

  3 (a) and 3 (b) are the wide angle state of the lens unit 12, FIGS. 5 (a) and 5 (b) are the telephoto state of the lens unit 12, and FIGS. 6 (a) and 6 (b) are the telephoto state. FIGS. 7A and 7B show the retracted state of the prism. FIGS. 7A and 7B show the retracted state of the lens unit 12. FIG. 7A is a perspective side view, and FIG. 7B is a perspective front view. is there. 3B, FIG. 5B, FIG. 6B, and FIG. 7B, a first lens group that is a lens group on the subject side and a first holding member that holds the lens group are provided. Omitted and the rotating cylinder is indicated by a two-dot chain line.

  First, the configuration of the lens unit 12 will be described with reference to FIGS. 3 (a) and 3 (b).

  The imaging lens includes a first lens group 81, a prism 85, a second lens group 82 including a camera shake correction lens group 82t, and a third lens group 83 in order from the subject side. The first lens group 81 is on the first optical axis 76, and the second lens group 82 and the third lens group 83 correspond to subsequent lenses and are on the second optical axis 77. The imaging lens focuses light from the subject on the imaging element 26.

  The prism 85 is a triangular prism having a right-angled isosceles triangle section, and the inclined surface is disposed so as to form an angle of 45 degrees with respect to the first optical axis 76 and the second optical axis 77, and the first optical axis. 76 is bent substantially perpendicularly to the direction of the second optical axis 77.

  For zooming, the first lens group 81, the second lens group 82, and the third lens group 83 move, the camera shake correction lens group 82t moves together with the second lens group 82, and the third lens group 83 during focusing. Move.

  With respect to the collapse, the third lens group 83 moves toward the image sensor 26 on the second optical axis 77, and the second lens group 82 retreats to the space formed by the movement of the third lens group 83. The prism 85 revolves and retracts around the axis parallel to the first optical axis 76 in the space formed by the movement of the second lens group 82. The first lens group 81 is accommodated by moving on the first optical axis 76 in a space formed by the movement of the prism 85.

  The first holding member 71 holds the first lens group 81, the prism holding member 75 holds the prism 85, the second holding member 72 holds the second lens group 82, and the third holding member 73 is the third lens. Group 83 is held. The prism 85 constitutes a bending member, and the prism holding member 75 constitutes a bending holding member. The bending member may be a mirror instead of the prism 85. The camera shake correction unit 72t holds the camera shake correction lens 82t so as to be movable in the vertical direction with respect to the second optical axis 77, and corrects the deviation of the optical axis due to camera shake. A shutter unit 99 is fixed to the second holding member 72.

Next, a variable magnification movement configuration will be described. When zooming from the wide-angle end to the telephoto end, the first lens group 81 moves to the subject side, the second lens group 82 moves to the prism 85 side, and the third lens group 83 moves to the image sensor 26 side.
Regarding the configuration in which the first holding member 71 that holds the first lens group 81 is moved in a variable magnification, the fixed cylinder 31, the rotary cylinder 32 that moves integrally, the rectilinear cylinder 33, and the variable magnification rotary cylinder that moves integrally. 34 and a variable magnification linearly moving cylinder 35 are provided.

  The fixed cylinder 31 is fixed to the housing 70 and has a cylindrical shape centered on the first optical axis 76. The rotary cylinder 32 rotates without moving in the direction of the first optical axis 76 with respect to the fixed cylinder 31, The rectilinear cylinder 33 rotates relative to the rotating cylinder 32 and does not move in the direction of the first optical axis 76. Further, on the inner diameter side, the variable magnification rotation cylinder 34 moves in the direction of the first optical axis 76 while rotating with respect to the linear movement cylinder 33, and the variable magnification linear movement cylinder 35 is integrated with the variable magnification rotation cylinder 34 in the first optical axis. Move straight in the 76 direction. The first holding member 71 is held in the variable magnification rectilinear cylinder 35 so as to be able to move straight in the direction of the first optical axis 76. The variable magnification rotating cylinder 34 and the variable magnification linear movement cylinder 35 that moves linearly in the direction of the first optical axis 76 integrally with the variable magnification rotating cylinder 34 constitute a variable magnification movable cylinder. Constitutes a first variable magnification moving member.

  When the first motor 36, which is an actuator, rotates, the rotational driving force decelerated by the reduction gear train 37 is transmitted to the rotary cylinder 32 via the long gear 38, and when the rotary cylinder 32 rotates, the variable magnification linearly moving cylinder 35 is fed out. Further, the first holding member 71 is extended to the subject side and reaches the telephoto end. A detailed configuration will be described later.

  Next, with regard to the configuration of the second holding member 72 for variable magnification movement, the guide shaft 51 is disposed in parallel with the second optical axis 77, and both end portions thereof are fixed to the wall surfaces 70d and 70e of the housing 70, Near the center of the guide shaft 51, it is held by the shaft holding portion 70b so as not to tilt. The guide shaft 51 is fitted with a sliding guide hole 72 a of the second holding member 72, which is a guide portion, so that the second holding member 72 does not tilt with respect to the second optical axis 77. Guide to move in the direction of 77. The second holding member 72 is prevented from rotating around the optical axis when the rotation stopper 72e is engaged with the third guide shaft 61 and moves. The guide shaft 51 and the sliding guide hole 72a constitute a second variable magnification moving member. Note that the second holding member 72 may be slidably fitted to a cylinder fixed to the housing 70 as a configuration in which the second holding member 72 is linearly moved in the direction of the second optical axis 77.

  Further, the second holding member 72 is biased toward the prism 85 in the direction of the second optical axis 77 by the second spring 72b, and the interlocking shaft 91 is imaged by the interlocking spring 91e having a stronger biasing force than the second spring 72b. The magnification contact portion 72c is always in contact with the magnification contact projection 91b of the interlocking shaft 91 in the magnification region. The second spring 72b may be provided between the second holding member 72 and the housing 70 in order to bias the prism 85 toward the prism 85, or between the second holding member 72 and the interlocking shaft 91. It may be provided between them. The interlocking shaft 91 is movably fitted to the second guide shaft 51, and the rectilinear projection 91 d is fitted in the guide groove 70 a of the housing 70 and guided linearly. Further, the interlocking shaft 91 is formed with a zooming interlocking part 91a, and the zooming interlocking part 91a is always in contact with the zooming interlocking protrusion 32f of the rotating cylinder 32 in the zooming area by the spring biasing force of the interlocking spring 91e. When retracted, when the interlocking shaft 91 contacts the shaft holding portion 70b of the housing 70, the zooming interlocking portion 91a comes out of contact with the zooming interlocking projection 32f of the rotating cylinder 32, and the second holding member. The contact relationship with 72 is also lost. The interlocking shaft 91, the variable magnification interlocking protrusion 32f that contacts the interlocking shaft 91, and the variable magnification contact portion 72c constitute an interlocking member. The interlocking member may be a plate-shaped member instead of the interlocking shaft 91. In addition, at least a part of the interlocking member is on the inner diameter side of the outer diameter of the rotating cylinder 32 and further on the imaging element 26 side than the end of the rotating cylinder 32 in the first optical axis 76 direction side. At least a certain period during operation is positioned.

  When the first motor 36 rotates, the rotary cylinder 32 rotates counterclockwise via the reduction gear train 37 and the long gear 38, and the variable magnification interlocking protrusion 32f that contacts the variable magnification interlocking portion 91a becomes the interlocking spring 91e. When the interlocking shaft 91 is pushed to the right in FIG. 3B, the second holding member 72 follows the interlocking shaft 91 while contacting the interlocking shaft 91 by the spring biasing force of the second spring 72b. Then, it moves to the prism 85 side and reaches the telephoto end.

  In order to convert the rotational force of the rotating cylinder 32 into the driving force in the direction of the second optical axis 77, an interlocking shaft 91 that is movable in the direction of the second optical axis 77 is provided. However, a gear may be provided on the outer periphery of the rotary cylinder 32 and a rack movable in the direction of the second optical axis 77 meshing with the gear may be provided on the second holding member 72. Further, the direction of the driving force may be changed by meshing a bevel gear between the rotary cylinder 32 and the second holding member 72.

  In addition, regarding the configuration of the third holding member 73 for variable magnification movement, the third guide shaft 61 is disposed in parallel with the second optical axis 77, one end of which is fixed to the wall surface 70d of the housing 70, and the other end thereof. The third sliding guide hole 73a of the third holding member 73 is fitted to the center wall surface 70f, and the second optical axis 77 is not tilted with respect to the second optical axis 77. Guide you to move in the direction of. The rotation stopping portion 73c is engaged with the restricting portion 70c of the housing 70 to prevent the third holding member 73 from rotating around the optical axis when moving. The third drive shaft 62 coupled to the rotation shaft of the third motor 63 is disposed in parallel with the second optical axis 77, a spiral screw is formed on the outer peripheral surface thereof, and the third holding member 73 is engaged. Screwed into the mating screw 73b.

  When the third motor 63 rotates, the third holding member 73 moves to the image sensor 26 side by the lead of the third drive shaft 62 and reaches the telephoto end.

  Next, a detailed zoom movement configuration of the first holding member 71 will be described with reference to FIGS. 4A to 4F, and switching between zooming and collapsing will be described.

  4A to 4F are development views at the wide-angle end as viewed from the outer peripheral side of the fixed cylinder 31, and the lower side of the figure is the subject side. 4A is a fixed cylinder 31, FIG. 4B is a rotating cylinder 32, FIG. 4C is a rectilinear cylinder 33, FIG. 4D is a variable magnification rotating cylinder 34, and FIG. 4E is a variable magnification. The rectilinear cylinder 35, FIG. 4 (f) is a development view of the first holding member 71.

  The fixed cylinder 31 has an opening 31c, an inner helicoid 31a which is a female helicoid, three rectilinear grooves 31b extending in the direction of the first optical axis 76 (vertical direction in FIG. 4), and 3 A circumferential groove 31d at a location and an introduction groove 31e extending to the circumferential groove 31d are provided. In the opening 31c, the prism holding member 75 enters and exits when retracted, and the shutter unit 99 enters and exits when zooming.

  When the inner cylinder 31a is screwed with an outer helicoid 32a which is a feeding member formed on the rotary cylinder 32 described later within the range of the rotation angle T as shown in FIG. 4A, the rotary cylinder 32 is rotated. The rotary cylinder 32 is moved in the direction of the first optical axis 76. The range of the rotation angle T is an area where the first holding member 71 is moved from the use position at the wide-angle end to the storage position, and the rotation angle T is the first lens group retracted area. In addition, the inner heicoid 31a and the outer helicoid 32a screwed to the inner heicoid 31a constitute a first moving member. For the feeding mechanism of the first moving member, a lead groove and a cam follower that fits in the groove may be used instead of the helicoid.

  The introduction groove 31e is formed of the same lead as the inner helicoid 31a, and one end thereof is opened so as to introduce a rhombus follower 32e of the rotary cylinder 32 described later.

  The circumferential groove 31d is a groove extending in the circumferential direction. As shown in FIG. 4 (a), the zooming area Z that moves from the wide-angle end to the telephoto end and the prism insertion that moves the prism 85 to the use position and the retracted position. A removal region P is formed and formed continuously with the introduction groove 31e. The prism insertion / removal region P is a region in which the prism 85 moves the light beam from a bent position where the light beam is bent in the direction of the second optical axis 77 from the first optical axis 76 to a retracted position off the optical axis.

  The rotating cylinder 32 includes a zooming interlocking protrusion 32f that abuts the interlocking shaft 91 described above and a pin-shaped collapsible interlocking part 32g on the upper end surface of FIG. 4B. ) And three straight advance grooves 32b extending in the vertical direction and three bayonet portions 32d. In addition, the groove | channel extended in the up-down direction of the bayonet part 32d is provided in order to insert the other party member fitted at the time of an assembly. The outer peripheral surface includes an outer helicoid 32a that is a male helicoid, a rhombus follower 32e, and a circumferential gear 32a. The circumferential gear 32 a meshes with a long gear 39 that is rotatably attached to the housing 70.

  The outer helicoid 32a is a male helicoid that is screwed with the inner helicoid 31a of the fixed cylinder 31, and is formed at the upper end of the rotating cylinder 32 of FIG. 4B. In the first lens group retracted region T, the outer helicoid 31a is screwed with the inner helicoid 31a. In addition, the variable magnification region Z and the prism insertion / removal region P are not screwed with the inner hayoid 31a.

  The rhombus follower 32e is engaged with the introduction groove 31e of the fixed cylinder 31 at the left and right slopes thereof, and is engaged with the circumferential groove 31d at the upper and lower surfaces thereof. When the rhombus follower 32e is engaged in the variable magnification area Z of the circumferential groove 31d and the prism insertion / removal area P, the rotation cylinder 32 does not move in the direction of the first optical axis 76 even if the rotation cylinder 32 rotates. Do not move. Further, at a position where the rhombus follower 32e is engaged with the introduction groove 31e, the outer helicoid 32a starts to be screwed with the inner helicoid 31a, and when the rotating cylinder 32 rotates, the outer helicoid 32a is screwed with the inner helicoid 31a, and the rotating cylinder 32 moves in the direction of the first optical axis 76 (vertical direction in FIG. 4B) while rotating by the helicoid lead. The rhombus follower 32e may be circular instead of rhombus.

  That is, when the rotary cylinder 32 is rotated in the left direction of FIG. 4 from the wide-angle end state shown in FIGS. 4A and 4B, the rhombus follower 32e is in the zoom region Z, and the rotary cylinder 32 is It only rotates and does not move in the direction of the first optical axis 76. Conversely, when the rotating cylinder 32 rotates to the right from the state of FIG. 4, the prism first reaches the prism insertion / removal region P, and the rotating cylinder 32 only rotates and does not move in the direction of the first optical axis 76. When rotated to the right, the first lens group retracted region T is reached, and the rotating cylinder 32 moves to the prism 85 side (upper side in FIG. 4) of the first optical axis 76 while rotating.

  The rectilinear cylinder 33 is rotatably fitted to the rotating cylinder 32 and includes three circumferential holes 33e extending in the circumferential direction and lead-shaped lead holes 33f extending to the circumferential holes 33e. The surface includes a rectilinear rib 33a that engages with the rectilinear groove 31b of the fixed cylinder 31, and a bayonet claw portion 33d. The inner peripheral surface includes a rectilinear groove 33b that extends in the vertical direction.

  The lead hole 33f forms a zoom region Z, the circumferential hole 33e forms a prism insertion / removal region P near the wide-angle end of the zoom region Z, and further forms a first lens group retracted region T.

  Since the bayonet claw portion 33d is engaged with the bayonet portion 32d and the rectilinear rib 33a is engaged with the rectilinear groove 31b, the rectilinear barrel 33 is rotatable with respect to the rotary barrel 32 and the direction of the first optical axis 76 Move straight in one.

  The variable-magnification rotating cylinder 34 is rotatably fitted in a diameter with the rectilinear cylinder 33, and includes three cam followers 34a on the outer peripheral surface. The inner peripheral surface has a bayonet portion 34d and three portions extending in the circumferential direction. A circumferential groove 34e and a cam groove 34f extending to the circumferential groove 34e are provided.

  The cam follower 34a engages with the rectilinear groove 32b of the rotating cylinder 32 and the circumferential hole 33e or the lead hole 33f of the rectilinear cylinder 33, and when the rotating cylinder 32 rotates in the region engaged with the lead hole 33f, the lead hole 33f In response to the lead, the variable magnification rotating cylinder 34 moves in the direction of the first optical axis 76 while rotating. In the region where the cam follower 34a is engaged with the circumferential hole 33e, the rotating cylinder 32 rotates and the variable power rotating cylinder 34 rotates, but does not move in the direction of the first optical axis 76.

  That is, the zooming rotating cylinder 34 always rotates integrally with the rotating cylinder 32 and moves in the zooming area Z while moving in the direction of the first optical axis 76, so that the prism insertion / removal area P and the first lens group collapsible are moved. In the region T, it does not move in the direction of the first optical axis 76 with respect to the rotating cylinder 32.

  The variable-magnification linear cylinder 35 is rotatably engaged with the variable-magnification rotary cylinder 34 and has three through-straight linear holes 35b, and linear ribs 35a that engage with the linear grooves 33b of the linear cylinder 33 on the outer peripheral surface. Three bayonet claw portions 35d are provided.

  Since the bayonet claw portion 35d is engaged with the bayonet portion 34d and the rectilinear rib 35a is engaged with the rectilinear groove 33b, the variable magnification linearly movable tube 35 is rotatable with respect to the variable magnification rotating tube 34 and the first light In the direction of the shaft 76, the linear movement is integrally performed.

  In other words, the zoom lens 35 moves linearly in the direction of the first optical axis 76 in the zoom region Z in the direction of the first optical axis 76, and in the prism insertion / removal region P and the first lens group retractable region T. It is immobile.

  A cam follower 71 a is fixed to the first holding member 71, and the cam follower 71 a engages with the circumferential groove 34 e or the cam groove 34 f of the variable magnification rotating cylinder 34 and the straight advance hole 35 b of the variable magnification linearly moving cylinder 35, and the cam groove When the variable magnification rotating cylinder 34 rotates in the region engaged with 34f, the first holding member 71 moves straight in the direction of the first optical axis 76 according to the cam shape of the cam groove 34f. In the region engaged with the circumferential groove 34e, the first holding member 71 does not rotate and does not move in the direction of the first optical axis 76 even if the variable magnification rotating cylinder 34 rotates.

  That is, the first holding member 71 moves linearly in the direction of the first optical axis 76 with respect to the variable magnification linear movement 35 in the variable magnification region Z, and does not move in the prism insertion / removal region P and the first lens group retracted region. .

  Returning to FIG. 3 (a) and FIG. 3 (b), the structure of the retractable case will be described.

  During the collapse, the first holding member 71, the prism holding member 75, the second holding member 72, and the third holding member 73 move.

  First, a configuration in which the prism holding member 75 is retracted will be described. As shown in FIG. 3A, the prism holding member 75 has an L-shaped arm 75a extending toward the first holding member 71, and a missing gear 75b is fixed to the arm 75a, and the axis of the gear 75b is the center. The housing 70 is rotatably supported. A tension spring 75c provided on the arm 75a always brings the prism holding member 75 into contact with a stopper (not shown) at the bent position. The interlocking gear 39 is rotatably supported by the housing 70, and is provided with a collapsible interlocking projection 39a that meshes with the gear 75b and contacts the collapsible interlocking part 32g of the rotating cylinder 32. In FIG. 3B, the gear 75b and the interlocking gear 39 that meshes with the gear 75b are portions where the shutter unit 99 of the second holding member 72 on the image pickup element 26 side is not disposed outside and in the vicinity of the rotational operation of the rotary cylinder 32. If it arrange | positions to, the lens unit 12 will become small. The prism holding member 75 is provided with a collapsible abutment protrusion 75d that abuts against a collapsible abutment portion 72d of the second holding member 72 described later.

  When the first motor 36 is driven in the wide-angle end state, the rotational driving force reduced by the reduction gear train 37 is transmitted to the rotary cylinder 32 via the long gear 38, and the rotary cylinder 32 is shown in FIG. 4B, the zooming area Z rotates to the right from the intersection of the zooming area Z and the prism insertion / removal area P (clockwise rotation in FIG. 3B), and the collapsible interlocking portion 32g passes through the interlocking gear 39. The gear 75b is rotated, and the prism holding member 75 rotates clockwise about the axis of the gear 75b to reach the retracted position. In the prism insertion / removal region P, the first holding member 71 does not move.

  The interlocking gear 39 interlocks the rotating cylinder 32 and the prism holding member 75 to transmit the driving force. However, a gear is provided in the rotating cylinder 32 and the driving force is directly applied to the gear of the prism holding member 75. Alternatively, a protrusion may be provided on the rotary cylinder 32, and a protrusion engaging with the protrusion may be provided on the prism holding member 75 to transmit the driving force.

  Next, a configuration in which the second holding member 72 is retracted will be described. The retracting configuration of the second holding member 72 uses a variable magnification moving configuration of the second holding member 72. That is, the rotation stopper 72 e provided on the second holding member 72 is engaged with the third guide shaft 61, and the guide hole 72 a is slidably mounted on the guide shaft 51.

  In the state where the prism holding member 75 rotates and moves to the retracted position in the wide-angle end state, the retracting contact protrusion 75d of the prism holding member 75 contacts the retracting contact portion 72d of the second holding member 72 to hold the prism. When the member 75 further rotates, the second holding member is pushed by the retractable contact protrusion 75d against the second spring 72b, and slides on the guide shaft 51 to reach the retracted position on the image sensor 26 side. The collapsible contact portion 72d is provided in the vicinity of the sliding guide hole 72a, and the second holding member 72 slides on the guide shaft 51 smoothly. The retracting contact protrusion 75d, the retracting contact portion 72d contacting the retracting contact protrusion 75d, and the second spring 72b biased in the contacting direction constitute a second moving member.

  Next, a configuration in which the first holding member 71 is stored will be described. The first holding member 71 is accommodated by the rotating cylinder 32 and the rectilinear cylinder 33. That is, at the right end of the prism insertion / removal region P shown in FIG. 4A, the rhombus follower 32e of the rotary cylinder 32 is a position where it engages with the introduction groove 31e of the fixed cylinder 31, and the rotary cylinder 32 is rotated from that position. Then, due to the lead of the introduction groove 31e, the rotating cylinder 32 moves to the prism 85 side (upper side in FIG. 4) in the direction of the first optical axis 76 while rotating, and the outer helicoid 32a is screwed with the inner helicoid 31a. start. At that time, since the bayonet claw portion 33d of the rectilinear cylinder 33 is engaged with the bayonet portion 32d and the rectilinear rib 33a is engaged with the rectilinear groove 31b, when the rotating cylinder 32 rotates, the rectilinear cylinder 33 becomes a rotating cylinder. It can rotate with respect to 32 and moves linearly integrally to the prism 85 side (upper side in FIG. 4) in the first optical axis 76 direction. When the rectilinear cylinder 33 goes straight, the cam follower 34a of the variable magnification rotating cylinder 34 is engaged with the circumferential hole 33e (first lens group retracted region T), so that the variable magnification rotating cylinder 34, the variable magnification linearly moving cylinder 35, The one holding member 71 moves together with the rectilinear cylinder 33 to the prism 85 side (upper side in FIG. 4) in the first optical axis 76 direction.

  When the first motor 36 shown in FIG. 3 is driven in a state where the prism holding member 75 is retracted, the rotational driving force decelerated to the reduction gear train 37 is transmitted to the rotary cylinder 32 via the long gear 38 and rotated. When the cylinder 32 is rotated to the right in the first lens group retracted region T shown in FIG. 4A by the helicoid screw, the rectilinear cylinder 33 and the first holding member 71 rotate relative to the rotating cylinder 32 to integrally form the first It moves straight toward the prism 85 in the direction of the optical axis 76 and reaches the storage position.

  Next, a configuration in which the third holding member 73 is retracted will be described. The retracting configuration of the third holding member 73 shown in FIG. 3 uses a variable magnification moving configuration of the third holding member 73. That is, the rotation stopper 73 c provided on the third holding member 73 is engaged with the restricting portion 70 c, and the third sliding guide hole 73 a is slidably mounted on the third guide shaft 61.

  When the third motor 63 is driven at the wide-angle end, the third holding member 73 slides on the third guide shaft 61 by the lead of the third drive shaft 62 to the retracted position on the image sensor 26 side. It reaches.

  The operation will be described. First, the zooming operation will be described with reference to FIGS.

  When zooming from the wide-angle state shown in FIG. 3 to the telephoto state, the first lens group 81 moves to the subject side, the second lens group 82 moves to the prism 85 side, and the third lens group 83 moves to the image sensor 26 side. To the telephoto state shown in FIG.

  First, when the cross key 17 of the digital camera 1 in FIGS. 1 and 2 is operated to set the wide-angle end to the telephoto end, the imaging lens driving unit 25 performs the first operation based on the zoom control signal output from the control unit 27. 1 motor 36 and 3rd motor 63 are driven.

  When the first motor 36 rotates from the wide-angle state of FIG. 3, the rotational driving force decelerated by the reduction gear train 37 is transmitted to the rotary cylinder 32 via the long gear 38, and when the rotary cylinder 32 rotates, 35 is extended, and further, the first holding member 71 is extended toward the subject and reaches the wide-angle end.

  The zooming out operation of the first holding member 71 will be described in detail with reference to FIGS. 4 (a) to 4 (f). When the rotating cylinder 32 rotates leftward within the variable magnification region Z of the circumferential groove 31d, the rotating cylinder 32 does not move in the direction of the first optical axis 76, but the rectilinear cylinder 33 and the rotating cylinder 32 rotate relative to each other. Further, since the cam follower 34a of the variable magnification rotating cylinder 34 is engaged with the rectilinear groove 32b and the lead hole 33f, the variable magnification rotating cylinder 34 is fed out by the lead of the lead hole 33f while rotating, and the variable magnification linearly moving cylinder 35 is Depending on the lead of the lead hole 33f, it is fed straight in the direction of the first optical axis 76. Further, when the variable magnification rotating cylinder 34 rotates, the cam follower 71a of the first holding member 71 engages with the cam groove 34f and the rectilinear hole 35b, and the variable magnification rotating cylinder 34 and the variable magnification linearly moving cylinder 35 rotate relative to each other. The first holding member 71 is linearly extended in the direction of the first optical axis 76 in accordance with the cam shape of the cam groove 34f. By these zooming operations, the first holding member 71 reaches the telephoto end position shown in FIG.

  Next, returning to FIG. 3 regarding the magnification operation of the second holding member 72, when the first motor 36 rotates from the wide angle state, the rotating cylinder 32 rotates via the reduction gear train 37 and the long gear 38, and the rotating cylinder The variable magnification interlocking protrusion 32f of 32 presses the interlocking shaft 91 in the right direction in FIG. 3 against the interlocking spring 91e, and the second holding member 72 contacts the interlocking shaft 91 by the spring biasing force of the second spring 72b. Accordingly, since the sliding guide hole 72a is fitted to the guide shaft 51 and guided in the direction of the second optical axis 77, it moves straight toward the prism 85 shown in FIG. 5 and reaches the telephoto end.

  Next, regarding the magnification changing operation of the third holding member 73, when the third motor 63 rotates from the wide angle state of FIG. 3, the third holding member 73 is moved to the third sliding third by the lead of the third drive shaft 62. Since the sliding guide hole 73a is fitted to the guide shaft 61 and guided in the direction of the second optical axis 77, it moves straight toward the image sensor 26 and reaches the telephoto end shown in FIG.

  Instead of moving the first lens group 81 and the second lens group 82 simultaneously by the first motor 36 and then moving the third lens group 83 by the third motor 63 as in the above zooming operation, The motor 36 and the third motor 63 may be driven simultaneously, and the first lens group 81, the second lens group 82, and the third lens group 83 may be moved simultaneously.

  Next, the operation of the collapsible will be described.

  When the retracting operation is performed from the wide-angle state shown in FIG. 3, the third lens group 83 is first retracted to the image sensor 26 side, and then the second lens group 82 is retracted to the image sensor 26 side as shown in FIG. At approximately the same time, the prism 85 moves from the bent position to the retracted position outside the second optical axis 77 outside the rotational operating range of the rotary cylinder 32. The second lens group 82 may move to the retracted position, and then the prism 85 may move to the predetermined retracted position. Finally, as shown in FIG. 7A, the first lens group 81 moves from the use position to a storage position that is a space formed by retreating the prism 85 on the first optical axis 76.

  First, when the power button 20 of the digital camera 1 of FIGS. 1 and 2 is pressed to turn it off, the imaging lens driving unit 25 drives the third motor 63 based on the retractable control signal output from the control unit 27, Next, the first motor 36 is driven.

  From the wide-angle state of FIG. 3, the imaging lens driving unit 25 first drives the third motor 63 to move the third holding member 73 to the retracted position on the imaging element 26 side by the third driving shaft 62, and then The first motor 36 is driven.

  When the first motor 36 is driven, the rotational driving force reduced by the reduction gear train 37 is transmitted to the rotary cylinder 32 via the long gear 38, and the rotary cylinder 32 is shown in FIGS. 4 (a) and 4 (b). 3 is rotated to the right in the prism insertion / removal region P (clockwise rotation in FIG. 3B), the collapsible interlocking portion 32g rotates the gear 75b via the interlocking gear 39, and the prism holding member 75 is rotated to the gear 75b. Rotate clockwise around the axis.

  When the prism holding member 75 rotates, the retracting contact protrusion 75d of the prism holding member 75 contacts the retracting contact portion 72d of the second holding member 72, and when the prism holding member 75 further rotates, it resists the second spring 72b. Then, the second holding member 72 is pushed by the collapsible contact protrusion 75d and slides on the guide shaft 51 to reach the retracted position on the image pickup device 26 side as shown in FIG. The member 75 reaches the retracted position and forms a space in which the first holding member 71 is stored.

  When the rotary cylinder 32 is further rotated by the first motor 36 from the state of FIG. 6, the helicoids 31a and 32a are within the first lens group retracted region T shown in FIGS. 4 (a) and 4 (b). The lead moves to the prism 85 side (upper side in FIG. 4) in the direction of the first optical axis 76 while rotating. The rectilinear cylinder 33 that moves integrally with the rotating cylinder 32 does not rotate and moves linearly with the first holding member 71 on the prism 85 side (upper side in FIG. 4) in the direction of the first optical axis 76, as shown in FIG. It reaches the storage position. Note that while the first holding member 71 is retracted, the prism holding member 75 maintains the retracted position because the rotary cylinder 32 engages the retracting interlocking protrusion 39a of the interlocking gear 39. While the first holding member 71 is retracted, a part of the prism holding member 74 is locked by the upper end surface of the rotary cylinder 32 or the rectilinear cylinder 33 so that the retracted position of the prism holding member 75 is maintained. Also good.

  In order to switch the lens unit 12 from the storage position to the use position, the imaging lens driving unit 25 controls the driving of each motor in the reverse order to the drive from the use position to the storage position. That is, when the power button 20 of the digital camera 1 of FIGS. 1 and 2 is pressed and turned on, the imaging lens driving unit 25 first drives the first motor 36 based on the imaging preparation signal output from the control unit 27. Then, the third motor 63 is driven.

  When the first motor 36 is driven from the housed state shown in FIG. 7, the rotational driving force reduced by the reduction gear train 37 is transmitted to the rotary cylinder 32 via the long gear 38, and FIG. Within the first lens group retracted region T shown in FIG. 4 (b), the lead of the helicoids 31a and 32a moves to the subject side (lower side in FIG. 4) in the direction of the first optical axis 76 while rotating. The rectilinear cylinder 33 that moves integrally with the rotating cylinder 32 moves rectilinearly with the first holding member 71, and the first holding member 71 reaches the use position at the wide-angle end of the first holding member 71 shown in FIG. .

  When the rotating cylinder 32 is further rotated by the first motor 36 from the state of FIG. 6, the rotating cylinder 32 rotates to the left in the prism insertion / removal region P shown in FIGS. 4 (a) and 4 (b). Then, the collapsible interlocking portion 32g disengages from the interlocking gear 39, and the prism holding member 75 is pulled by the tension spring 75c so as to hit a stopper (not shown). It rotates in the counterclockwise direction around the axis of the gear 75b until it comes into contact, and reaches the bent position on the first optical axis 76 shown in FIG.

  In FIG. 6, when the prism holding member 75 moves to the bent position, the second holding member 72 is disengaged from the retracting contact protrusion 75d of the prism holding member 75, and the spring biasing force of the second spring 72b The guide shaft 51 is slid until the magnification contact portion 72c contacts the magnification contact protrusion 91b of the interlocking shaft 91, and as shown in FIG. To.

  Next, the third motor 63 of FIG. 7 is driven, and the third holding member 73 slides on the guide shaft 61 to reach the use position at the wide-angle end.

  In addition, both the magnification of the first holding member 71 and the collapse of the first holding member 71 are performed by driving the first motor 36. However, a magnification changing motor for moving the first holding member 71 is provided. Alternatively, another motor for retracting the first holding member 71 and the prism holding member 75 may be provided.

  In the above embodiment, an example of a zoom lens has been described. However, the lens unit of the present invention can also be adopted as a single focus lens, and in particular, a single lens in which the lens on the subject side protrudes greatly from the bending member. This is effective for retracting the focusing optical system.

  As described above, the first holding member 71 that holds the first lens group 81 on which the light beam is incident from the subject so as to be able to change the magnification, and the light beam that is bent at a substantially right angle by the prism 85 is guided to the image sensor 26 side. In the bent zoom lens having the second holding member 72 that holds the two lens groups 82 so as to be capable of zooming movement, the motor 36 drives one of the holding members, and the driving force of the driven holding member is applied to the other zoom member. Since the interlocking member for transmitting to the holding member is provided, it can be applied to a bending zoom optical system in which the lens group on the subject side of the prism 85 is changed in magnification. Since 71 and the second holding member 72 can be moved, the lens unit can be downsized with a simple mechanism, and the manufacturing cost can be reduced.

  The first variable magnification moving member is composed of at least the rotating cylinder 32 and the fixed cylinder 31, and the second variable magnification moving member is a guide portion that moves the second holding member 72 straight in the direction of the second optical axis 77. The interlocking member is configured to convert the rotational force of the rotating cylinder 32 into the linear movement of the guide portion. Therefore, the driving force that moves the first holding member 71 and the second holding member 72 with a simple configuration. The driving force for moving the first lens group 81 and the second lens group 82 can be suppressed, and the decentering of the first lens group 81 and the second lens group 82 can be suppressed.

  Further, since the motor 36 is configured to drive the first variable magnification moving member, the rotational driving force by the motor or the like can be transmitted to the first variable moving member provided with the rotating cylinder 32, and the transmission efficiency is improved.

  Further, since the linear force that converts the rotational force of the rotating cylinder 32 into the linear movement of the guide portion is transmitted intermittently from the interlock member to the guide portion, the configuration of the interlock member is simplified, This makes the lens unit smaller and less expensive.

  Further, when the first holding member 71 is in the use position, the straight advance force is transmitted to the guide portion, and when the first holding member 71 is moved from the use position to the storage position, the straight advance force is transmitted to the guide portion. Since the structure is cut off, the interlocking member can be disconnected when the variable magnification movement is not performed, and the structure of the interlocking member is simplified, and thus the lens unit is reduced in size and cost. .

  Further, since the second holding member 72 is moved to the storage position by moving the guide portion straightly during a period in which the straight force is not transmitted to the guide portion, the second holding member By separately providing a mechanism for storing 72, the structure of the interlocking member is simplified, and thus the lens unit is reduced in size and cost.

  Further, in conjunction with the movement of the bending holding member 75 to the retracted position, the guide portion is moved linearly and the second holding member 72 moves to the storage position. Storing the second holding member 72 simplifies the configuration of the retracting mechanism, which leads to a reduction in size and cost of the lens unit.

  In addition, at least a part of the interlocking member is on the inner diameter side of the outer diameter of the rotating cylinder 32 and further on the imaging element 26 side than the end of the rotating cylinder 32 in the first optical axis 76 direction side. Since the configuration is such that the lens unit is positioned at least for a certain period of time during operation, the outer size of the lens unit can be reduced.

The perspective view (a) and back view (b) which show the external appearance of the digital camera of this invention typically. The figure which shows typically the structure of the digital camera of this invention. The perspective side view (a) and perspective front view (b) which show the structure of the wide angle state of the lens unit of this invention. FIG. 4 is a development view of a fixed barrel of the lens unit of the present invention (a), a development view of a rotary barrel (b), a development view of a rectilinear advance barrel (c), a development view of a variable speed rotary barrel (d), and a development of a variable magnification rectilinear advance barrel. FIG. 4E and a development view (f) of the first holding member. The perspective side view (a) and perspective front view (b) which show the structure of the telephoto state of the lens unit of this invention. The perspective side view (a) and perspective front view (b) which show the structure of the prism retracted state of the lens unit of this invention. The perspective side view (a) and perspective front view (b) which show the structure of the accommodation state of the lens unit of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Camera housing 12 Lens unit 15 Display part 19 Release button 20 Power button 25 Imaging lens drive part 26 Imaging element 27 Control part 31 Fixed cylinder 31a Inner helicoid 31b Straight groove 31c Opening 31d Circumferential groove 31e Introducing groove 32 Rotating cylinder 32a Outside Helicoid 32b Straight groove 32c Circumferential gear 32d Bayonet portion 32e Rhombus follower 32f Scaling interlocking projection (interlocking member)
32g collapsible interlocking part 33 straight advance cylinder (first variable magnification moving member)
33a rectilinear rib 33b rectilinear groove 33d bayonet claw 33e circumferential hole 33f lead hole 34 variable magnification rotating cylinder (first variable magnification moving member)
34a Cam follower 34d Bayonet portion 34e Circumferential groove 34f Cam groove 35 Variable magnification linearly moving cylinder (first variable magnification moving member)
35a rectilinear rib 35b rectilinear hole 35d bayonet claw 36 first motor 37 reduction gear train 38 long gear 39 interlocking gear 39a collapsible interlocking protrusion 51 second guide shaft (second variable magnification moving member)
61 Third guide shaft 62 Third drive shaft 63 Third motor 70 Housing 70a Guide groove 70b Shaft holding portion 70c Restricting portion 71 First holding member 71a Cam follower 72 Second holding member 72a Second sliding guide hole (second variation) Double moving member)
72b Second spring 72c Magnification contact part (interlocking member)
72d Retraction contact portion 72t Camera shake correction unit 73 Third holding member 73a Third sliding guide hole 73b Third engagement screw 73c Anti-rotation portion 75 Prism holding member (bending holding member)
75a Arm 75b Prism gear 75c Prism spring 75d Retraction contact projection 76 First optical axis 77 Second optical axis 81 First lens group 82 Second lens group 82t Camera shake correction lens 83 Third lens group 85 Prism (bending member)
91 Interlocking shaft (interlocking member)
91a Variable magnification interlocking portion 91b Variable magnification contact protrusion 91c Stopper 91d Straight projection 91e Interlocking spring 99 Shutter unit

Claims (9)

A first holding member that is arranged in the first optical axis direction and that holds the first lens group in which a light beam enters from the subject is movable in the first optical axis direction, and a second that is substantially perpendicular to the first optical axis. A bending holding member that holds a bending member that is bent in the optical axis direction of the optical axis, and a second lens group that guides the light beam bent in the second optical axis direction to the image sensor side so as to be movable in the second optical axis direction. In a lens unit that includes a second holding member and an actuator, and performs zooming by moving at least the first lens group and the second lens group,
A first variable magnification moving member that moves the first holding member in the first optical axis direction;
A second variable magnification moving member for moving the second holding member in the second optical axis direction;
A lens unit comprising: an interlocking member that drives one of the variable magnification moving members by the actuator and transmits a driving force of the driven variable magnification moving member to the other variable magnification moving member. . A fixed cylinder fixed to the housing, and a rotating cylinder rotated with respect to the fixed cylinder,
The first variable magnification moving member is composed of at least the rotating cylinder and the fixed cylinder,
The second variable magnification moving member includes a guide portion that moves the second holding member straight in the second optical axis direction,
The lens unit according to claim 1, wherein the interlocking member is configured to convert a rotational force of the rotating cylinder into a linear movement of the guide portion. The lens unit according to claim 1, wherein the actuator drives the first variable magnification moving member. 4. The lens unit according to claim 2, wherein the linear force that converts the rotational force of the rotating cylinder into the linear movement of the guide portion is intermittently transmitted from the interlocking member to the guide portion. 5. . The first holding member is movable between a use position protruding from the housing and a storage position stored in the housing;
When the first holding member is in the use position, the linear force is transmitted to the guide portion, and when the first holding member is moved from the use position to the storage position, the straight force is applied to the guide portion. The lens unit according to claim 4, wherein transmission to is interrupted. The second holding member is movable between a use position and a storage position;
The guide portion is configured to move straightly and the second holding member moves to the storage position during a period in which the straight force is not transmitted to the guide portion. The lens unit according to claim 5. The bending holding member is movable between a bending position where the first optical axis is bent in the second optical axis direction and a retracted position where the optical axis is bent;
The lens unit according to claim 6, wherein the guide portion is moved linearly in conjunction with the movement of the bent holding member to the retracted position, and the second holding member moves to the storage position. At least a part of the interlocking member is operating at least on the inner diameter side of the outer diameter of the rotating cylinder and further on the imaging element side of the first optical axis direction end of the rotating cylinder on the imaging element side end. The lens unit according to claim 2, wherein the lens unit is positioned for a certain period of time. An imaging apparatus comprising: the lens unit according to claim 1; and an imaging device that receives light guided by the lens unit.

Images