JP2009169243A - Lens barrel and imaging apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a lens barrel which becomes thin and compact when not performing photography with a simple mechanism even if it is a lens barrel including a bending optical system constituted so that a lens group arranged nearer to an object side than a reflection member can also move in an optical axis direction. <P>SOLUTION: The lens barrel has: a lens group frame that is arranged nearer to an image surface side than the reflection member and is moved when performing photography; an engaging member that is engaged when the lens group frame moves to go over a moving area set when performing photography; and a lens group frame that is arranged nearer to the image surface side than the reflection member and is not moved when performing photography. In a change from a photographing state to a non-photographing state, the engaging member is turned when the lens group frame that is arranged nearer to the image surface side than the reflection member and is moved when performing photography is moved to go over the moving area set when performing photography, thereby the lens group that is not moved when performing photography and the reflection member are moved, and the lens group arranged nearer to the object side than the reflection member is housed. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a lens barrel that includes a bending optical system in which a reflecting member is disposed in an optical system, and in particular is configured to retract a lens group on the object side from the reflecting member.

  2. Description of the Related Art Conventionally, there has been known an imaging apparatus including a so-called bending optical system in which a reflecting surface is disposed in an optical system and an optical axis is bent. By using a bending optical system in which a small number of lens groups are fixedly arranged on the object side of the reflecting member, there is an apparatus in which the imaging apparatus can be easily thinned without employing a complicated retracting mechanism.

On the other hand, an imaging apparatus is desired to be equipped with a higher zooming optical system, and an apparatus that moves a lens group arranged closer to the object side than the reflecting member in the optical axis direction has been proposed. Such a high-magnification bending optical system has a large number of lens units arranged on the object side of the reflecting member, and needs to be moved in the optical axis direction so as to be separated from the reflecting member during photographing. There are many. For this reason, it is known that the reflecting member and the lens group in the vicinity of the reflecting member are retracted and the lens group disposed on the object side from the reflecting member is moved to the image plane side so that the imaging apparatus is compact when not photographing. (For example, refer to Patent Document 1).
JP 2007-114447 A

  However, the photographing lens unit described in Patent Document 1 does not describe a mechanism such as how to retract and move the reflecting member and retract the lens group disposed on the object side from the reflecting member.

  The present invention provides a simple mechanism for a lens barrel including a bending optical system configured to be movable in the direction of the optical axis even when the lens group disposed on the object side from the reflecting member is thin and compact when not photographing. The objective of this invention is to obtain a thin and compact imaging device by providing the lens barrel.

  The above object is solved by the following configuration.

  1. A lens barrel having a plurality of lens groups, a lens group frame that holds the lens groups, and a reflecting member that is disposed between the lens groups and that bends the optical axis. And a lens group frame that is moved during shooting, an engagement member that engages when the lens group frame moves beyond a moving area during shooting, and is disposed closer to the image plane than the reflecting member. A lens group frame that is not moved at the time of shooting, and the lens group frame that is arranged on the image plane side relative to the reflecting member and is moved at the time of shooting in the change from the shooting state to the non-shooting state When the lens is moved beyond the moving area, the engaging member is rotated to move the lens group that is not moved during photographing and the reflecting member, and the lens group on the object side from the reflecting member is housed. Lens mirror .

  2. 2. The lens barrel according to 1, wherein both the reflecting member and a lens group that is not moved during photographing are moved in a direction approaching the image sensor.

  3. 2. The lens barrel according to 1, wherein the reflecting member is moved in a direction away from the imaging device, and a lens group that is not moved during imaging is moved in a direction approaching the imaging device.

  4). A lens barrel having a plurality of lens groups, a lens group frame that holds the lens groups, and a reflecting member that is disposed between the lens groups and that bends the optical axis. In a change from a shooting state to a non-shooting state, a lens group lens frame that is disposed at the time of shooting and a lens group frame that is disposed closer to the image plane than the reflecting member and is not moved at the time of shooting. When the lens group lens frame that is disposed on the image plane side from the reflecting member and is moved at the time of photographing is moved beyond the moving region at the time of photographing, a part of the lens group lens frame is not moved at the time of photographing. A lens barrel which engages with a part of a lens group lens frame, moves a lens group which is not moved during photographing, and houses a lens group on the object side with respect to the reflecting member.

  5). The lens group that is not moved in the shooting state but moved in the change to the non-shooting state is moved to a position within the outer shape of the lens group lens frame that is arranged on the object side of the reflecting member and is movable. 5. The lens barrel according to 4, which is a feature.

  An imaging apparatus comprising the lens barrel according to any one of 6.1 to 5.

  According to the present invention, even a bending optical system having a plurality of lens groups on the object side of a reflecting member, it is possible to obtain a lens barrel and an imaging apparatus that are thin and compact when not photographing with a simple mechanism. It becomes.

  Hereinafter, the present invention will be described in detail with reference to embodiments, but the present invention is not limited thereto.

  FIG. 1 is a perspective view illustrating an example of an internal arrangement of main constituent units of a camera 100 that is an example of an imaging apparatus including a lens barrel according to the present embodiment.

  As shown in the figure, the camera 100 has a lens barrel 50 that includes a foldable imaging optical system capable of zooming, and is arranged horizontally as shown in the figure. Reference numeral 11 denotes a first lens arranged on the most object side. A lens barrier (not shown) that opens the first lens 11 and closes the first lens 11 may be provided.

  Reference numeral 52 denotes a flash light emission window. Reference numeral 53 denotes a flash unit including a reflector, a xenon tube, other main capacitors, a circuit board, and the like disposed behind the flash light emission window. A battery 55 supplies power to each part of the camera. The battery 55 and an image recording memory (not shown) can be inserted and removed from a lid (not shown).

  A release button 56 is disposed on the upper surface of the camera. When the first button is pushed, a shooting preparation operation of the camera, that is, a focusing operation and a photometric operation are performed, and a shooting exposure operation is performed by pushing the second button. A main switch 57 is a switch for switching the camera between an operating state and a non-operating state.

  On the back side of the camera, an image display unit 58 configured by an LCD, an organic EL, or the like and displaying an image and other character information is disposed. Although not shown, a zoom button for zooming up and down, a playback button for playing back a captured image, a menu button for displaying various menus on the image display unit 58, and a desired function are selected from the display. An operation member such as a selection button is arranged.

  Although not shown, each part is connected between these main constituent units and a circuit board on which various electronic components are mounted is arranged to drive and control each main constituent unit. Yes. Similarly, although not shown, an external input / output terminal, a strap attaching portion, a tripod seat, and the like are provided.

(First embodiment)
FIG. 2 is a diagram showing the lens barrel 50. (A) is an external perspective view showing the entire lens barrel 50, (b) is a cross-sectional view showing the approximate position of each lens group at the tele end (telephoto end) during shooting, FIG. 2C is a cross-sectional view showing the approximate position of each lens group at the wide end (wide angle end) during shooting. In addition, the same figure (b), (c) has shown the cross section cut | disconnected by the surface containing the optical axis before and after bending.

  As shown in the figure, in the lens barrel 50, the first lens group 11 and the second lens group 12 are arranged from the object side. The first lens group frame 11k that holds the first lens group 11 is formed in a cylindrical shape, and a cam pin (not shown) is implanted in the first lens group frame 11k. The cam pin is engaged with an inner cam formed on the inner cylinder surface of the cam cylinder 42 via the straight guide groove of the intermediate cylinder 43. That is, the first lens group frame 11k and the first lens group 11 are movable by the rotation of the cam cylinder 42.

  Further, the cam cylinder 42 is rotated by a first drive unit 31 constituted by a motor and a gear unit, and a relationship between a cam pin implanted in a cam cylinder 42 (not shown) and an inner cam formed in the fixed cylinder 41. As a result, relative movement with respect to the fixed barrel 41 is possible.

  A prism P, which is a reflecting member, is disposed on the image plane side of the second lens group 12, and the optical axes of the first lens group 11 and the second lens group 12 are bent by approximately 90 °. A third lens group 13 is disposed on the image plane side of the prism P. In this example, the prism P and the third lens group 13 are integrally held by the third lens group lens frame 13k. The third lens group lens frame 13k is formed with a sleeve portion through which the guide shaft 17 is fitted and a rotation restricting portion whose rotation is restricted by the guide shaft 16, and is configured to be movable. Sometimes it is not moved.

  A fourth lens group 14 is disposed on the image plane side of the third lens group 13. In the present example, in the fourth lens group 14, the four lenses 14a to 14d are integrally held by the fourth lens group lens frame 14k. The fourth lens group lens frame 14k is also provided with a sleeve portion through which the guide shaft 16 is fitted and a rotation restricting portion whose rotation is restricted by the guide shaft 17, so that it can move along the guide shafts 16, 17. It has become. Further, the fourth lens group lens frame 14k is moved to a predetermined position by a lead screw (not shown) connected to the stepping motor 32 during zooming (magnification) at the time of photographing.

  A fifth lens group 15 is disposed on the image plane side of the fourth lens group 14. The fifth lens group 15 is held by a fifth lens group lens frame 15k. The fifth lens group lens frame 15k is also provided with a sleeve portion through which the guide shaft 16 is fitted and a rotation restricting portion whose rotation is restricted by the guide shaft 17, so that it can move along the guide shafts 16, 17. It has become. Further, the fifth lens group lens frame 15k is moved to a predetermined position by a lead screw (not shown) connected to the stepping motor 33 during zooming during focusing and during focusing.

  OF is an optical filter in which an infrared light cut filter and an optical low-pass filter are stacked. Furthermore, an image sensor (not shown) is arranged on the image plane side of the optical filter OF.

  The lens barrel 50 is configured to move the third lens group lens frame 13k, which is a lens group lens frame that is not moved during photographing, in the change from the photographing state to the non-photographing state.

  Hereinafter, how to move the prism P, which is a reflecting member, and the third lens group 13 when the lens barrel according to the first embodiment is not photographed will be described.

  FIG. 3 is a schematic diagram illustrating how the prism and the third lens group 13 are moved in the lens barrel according to the first embodiment. This figure is a view seen from the B direction shown in FIG. 2 (b) or FIG. 2 (c). FIG. 4A shows the wide end state during shooting, and FIG. 4B shows the state when not shooting.

  The figure shows a third lens group frame 13k holding the prism P and the third lens group 13, a fourth lens group frame 14k, a fifth lens group frame 15k, guide shafts 16 and 17, and It is a schematic diagram for extracting the joint member 21 and explaining its operation.

  As shown in FIG. 5A, the pin 13p formed in a part of the third lens group lens frame 13k is engaged with a long groove 21n formed in the engaging member 21. The engaging member 21 is rotatable about a shaft 21 s and is urged in the left direction in the figure by a tension coil spring 25. Further, a stopper 26 for locking the third lens group frame 13k at a predetermined position is formed, and therefore the third lens group frame 13k is locked at the position shown in FIG.

  Further, the pin 14p formed on a part of the fourth lens group lens frame 14k comes into contact with the side end surface of the engaging member 21 on the third lens group lens frame side, and in the illustrated wide end state, It is in a separated state. At the time of zooming from the wide end state to the long focal length direction, the fourth lens group frame 14k moves to the third lens group frame 13k side. For this reason, the pin 14p does not contact the side end surface of the engaging member 21 in the photographing state from the wide end to the tele end, and the third lens group lens frame 13k is maintained in a stopped state.

  On the other hand, the fifth lens group lens frame 15k moves in a direction approaching the optical filter OF upon zooming in the long focal length direction, and further performs focusing by slightly moving back and forth in the vicinity of the position. It has become. Although not shown, the fourth lens group frame 14k is driven by a stepping motor 32, and the fifth lens group frame 15k is driven by a stepping motor 33 (see FIG. 2A).

  Next, a change from the shooting state shown in FIG. 10A to the non-shooting state shown in FIG.

  To change to the non-photographing state, the fourth lens group frame 14k and the fifth lens group frame 15k are moved from the wide end state shown in FIG. That is, the fourth lens group lens frame 14k is moved beyond the wide end to tele end region, which is a moving region at the time of photographing.

  When the fourth lens group frame 14k moves in the direction of the optical filter OF, the pin 14p formed on the fourth lens group frame 14k comes into contact with the side end surface of the engaging member 21, and the fourth lens group frame 14k With the movement, the engaging member 21 is rotated in the clockwise direction in the drawing. For this reason, the third lens group lens frame 13k engaged with the long groove 21n of the engaging member 21 by the pin 13p moves in the direction of the optical filter OF as the engaging member 21 rotates. Thereby, it is possible to move the third lens group frame 13k that does not move during photographing.

  As illustrated, the distance between the shaft 21s and the contact position of the pin 14p is preferably set smaller than the distance between the shaft 21s and the pin 13p. By setting in this way, the movement amount of the third lens group frame 13k can be increased with a small movement amount of the fourth lens group frame 14k.

  By doing so, as shown in FIG. 5B, the third lens group frame 13k located behind the cam cylinder 42 indicated by the broken line is largely moved along the guide shafts 15 and 17 in the direction of the image sensor. Can be evacuated.

  FIG. 4 is a cross-sectional view illustrating a state in which the first and second lens groups are housed after the third lens group frame 13k is retracted in the lens barrel according to the first embodiment.

  As shown in the drawing, the third lens group lens frame 13k located behind the cam cylinder 42 is largely retracted, and the second lens group 12, the second lens group lens frame 12k, the cam cylinder 42, and the middle are retreated in this retracted space. The cylinder 43, the first lens group 11, and the first lens group frame 11k are housed.

  Accordingly, even if the lens barrel includes the bending optical system configured such that the first and second lens groups 11 and 12 arranged on the object side from the prism P which is a reflecting member are also movable in the optical axis direction. It is possible to make it thin and compact when not photographing with a simple mechanism.

  In other words, in this example, the lens group lens frame disposed on the image plane side from the reflecting member and moved during photographing corresponds to the fourth lens group lens frame 14k, and is disposed on the image surface side from the reflecting member. The lens group frame that is not moved corresponds to the third lens group frame 13k.

(Second Embodiment)
FIG. 5 is a schematic diagram illustrating an example of how to move the prism and the third lens group of the lens barrel according to the second embodiment. This figure is a view seen from the B direction shown in FIG. 2 (b) or FIG. 2 (c). FIG. 4A shows the wide end state during shooting, and FIG. 4B shows the state when not shooting.

  The figure also shows a prism holder PH that holds the prism P, a third lens group lens frame 13k that holds the third lens group, a fourth lens group lens frame 14k, a fifth lens group lens frame 15k, and a guide shaft. 16 and 17 are schematic views for extracting the engaging member 21 and explaining its operation.

  In the second embodiment, the prism P is held not by the third lens group lens frame 13k but by the prism holder PH. The prism holder PH and the third lens group lens frame 13k have guide shafts 17 respectively. The sleeve portion through which the shaft is fitted and the rotation restricting portion that is restricted by the guide shaft 16 are formed to be movable, but they are not moved during photographing.

  The lens barrel shown in FIG. 5 is provided with a semicircular engagement plate 61 that is rotatable about a shaft 61s.

  In the photographing state shown in FIG. 9A, the tension coil spring 62 hung on the engagement plate 61 is urged counterclockwise, and the engagement plate 61 comes into contact with the stopper 64.

  A pin PHp formed integrally with a part of the prism holder PH is engaged by a slit 61 t formed in the engagement plate 61. Further, the pin 13p formed integrally with a part of the third lens group lens frame 13k is engaged with the side end surface of the engagement plate 61 in the radial direction. The third lens group frame 13k is urged in the direction of the optical filter OF by a tension coil spring 63.

  The pin 14p formed integrally with a part of the fourth lens group lens frame 14k is in contact with the radial side end surface of the engaging member 61, and is separated from the wide end state shown in the drawing. It has become. At the time of zooming from the wide end state to the long focal length direction, the fourth lens group frame 14k moves to the third lens group frame 13k side. Therefore, the pin 14p does not come into contact with the side end surface in the radial direction of the engaging member 61 in the photographing state from the wide end to the tele end, and the prism holder PH and the third lens group lens frame 13k remain stopped. State is maintained.

  On the other hand, the fifth lens group lens frame 15k moves in a direction approaching the optical filter OF upon zooming in the long focal length direction, and further performs focusing by slightly moving back and forth in the vicinity of the position. It has become. Although not shown, the fourth lens group frame 14k is driven by a stepping motor 32, and the fifth lens group frame 15k is driven by a stepping motor 33 (see FIG. 2A).

  Next, a change from the shooting state shown in FIG. 10A to the non-shooting state shown in FIG.

  To change to the non-photographing state, the fourth lens group frame 14k and the fifth lens group frame 15k are moved from the wide end state shown in FIG. That is, the fourth lens group lens frame 14k is moved beyond the wide end to tele end region, which is a moving region at the time of photographing.

  When the fourth lens group lens frame 14k moves in the direction of the optical filter OF, the pin 14p formed on the fourth lens group lens frame 14k comes into contact with the end surface on the radial direction side of the engaging member 61, and the fourth lens group lens frame. With the movement of 14k, the engaging member 26 is rotated in the clockwise direction in the drawing. Therefore, the prism holder PH engaged with the slit 61t of the engaging member 61 and the pin 13p is moved in a direction away from the optical filter OF, and the third lens group frame 13k is moved by the biasing force of the coil spring 63 to the optical filter OF. Moved in the direction. As a result, the prism P and the third lens group frame 13k, which do not move during shooting, can be moved in different directions.

  FIG. 6 shows a state in which the first and second lens groups are accommodated after the prism holder PH and the third lens group barrel 13k of the lens barrel according to the second embodiment are retracted in different directions. It is sectional drawing shown.

  As shown in the figure, the prism holder PH and the third lens group frame 13k located behind the cam cylinder 42 are retracted in different directions, and the second lens group 12 and the second lens group frame are retracted in the retracted spaces. 12k, the cam cylinder 42, the intermediate cylinder 43, the first lens group 11, and the first lens group lens frame 11k are housed.

  Accordingly, even if the lens barrel includes the bending optical system configured such that the first and second lens groups 11 and 12 arranged on the object side from the prism P which is a reflecting member are also movable in the optical axis direction. It is possible to make it thin and compact when not photographing with a simple mechanism.

  That is, also in this example, the fourth lens group lens frame 14k corresponds to the lens group lens frame that is arranged on the image plane side from the reflecting member and is moved at the time of shooting, and is arranged on the image plane side from the reflecting member. The lens group frame that is not moved corresponds to the third lens group frame 13k.

(Third embodiment)
FIG. 7 is a perspective view showing an example of how to move the prism and the third lens group of the lens barrel according to the third embodiment. In the figure, the prism P, the third lens group lens frame 13k, the fourth lens group lens frame 14k, the fifth lens group lens frame 15k, the optical filter OF, and the guide shafts 16 and 17 are extracted and illustrated. The state of the wide end of time is shown.

  As shown in the figure, the prism P is fixed by a shaft Pj and can be rotated about the shaft Pj. In addition, the reflecting surface of the prism P at the time of photographing is maintained at a predetermined angle by a spring and a stopper (not shown).

  Further, as shown in the figure, the third lens group lens frame 13k is formed with a U-shaped portion 13g, and holes formed at both ends of the U-shaped portion 13g are fitted to the guide shaft 17. Yes. The rotation locking portion 14n of the fourth lens group lens frame 14k is provided between the U-shaped portions 13g of the third lens group lens frame 13k. The third lens group barrel 13k is urged in the direction of the prism P by an urging member (not shown) and is maintained at a predetermined position by a stopper (not shown).

  At the time of zooming from the wide end state to the long focal length direction, the fourth lens group frame 14k moves to the third lens group frame 13k side. For this reason, the rotation locking portion 14n moves between both ends of the U-shaped portion 13g in the photographing state from the wide end to the telephoto end, and thus does not come into contact with both ends of the U-shaped portion 13g. The lens group frame 13k is kept stopped.

  On the other hand, the fifth lens group lens frame 15k moves in a direction approaching the optical filter OF upon zooming in the long focal length direction, and further performs focusing by slightly moving back and forth in the vicinity of the position. It has become. Although not shown, the fourth lens group frame 14k is driven by a stepping motor 32, and the fifth lens group frame 15k is driven by a stepping motor 33 (see FIG. 2A).

  Next, a change from the shooting state shown in the figure to the non-shooting state will be described.

  To change to the non-photographing state, the fourth lens group lens frame 14k and the fifth lens group lens frame 15k are moved from the wide end state shown in the figure in the direction of the optical filter OF. That is, the fourth lens group lens frame 14k is moved beyond the wide end to tele end region, which is a moving region at the time of photographing.

  When the fourth lens group lens frame 14k moves in the direction of the optical filter OF, the rotation locking portion 14n formed in the fourth lens group lens frame 14k contacts the inner surface of the end surface of the U-shaped portion 13g on the optical filter OF side. Touch. Further, when the fourth lens group frame 14k moves to the optical filter OF side, the third lens group frame 13k is moved in the direction of the optical filter OF against an urging member (not shown). Thereby, the third lens group frame 13k that does not move during photographing is moved in the direction of the optical filter OF.

  FIG. 8 is a cross-sectional view illustrating a state in which the first and second lens groups are housed after the third lens group frame 13k is moved in the lens barrel according to the third embodiment.

  As shown in the figure, after the third lens group lens frame 13k is moved to a position within the outer shape of the first lens group lens frame 11k, the second lens group 12, the second lens group lens frame 12k, the cam cylinder 42, The intermediate cylinder 43, the first lens group 11, and the first lens group lens frame 11k are housed. At this time, the prism P is rotated as shown in the drawing, with any one of the first lens group lens frame 11k, the second lens group lens frame 12k, the cam cylinder 42, and the intermediate cylinder 43 in contact with each other.

  Accordingly, even if the lens barrel includes the bending optical system configured such that the first and second lens groups 11 and 12 arranged on the object side from the prism P which is a reflecting member are also movable in the optical axis direction. It is possible to make it thin and compact when not photographing with a simple mechanism.

  That is, also in this example, the fourth lens group lens frame 14k corresponds to the lens group lens frame that is arranged on the image plane side from the reflecting member and is moved at the time of shooting, and is arranged on the image plane side from the reflecting member. The lens group frame that is not moved corresponds to the third lens group frame 13k.

  It should be noted that the present invention can be variously modified and is not limited to the arrangement of the lens groups described above.

It is a perspective view which shows an example of the internal arrangement | positioning of the main structural unit of the camera which is an example of the imaging device provided with the lens barrel which concerns on this Embodiment. It is a figure which shows a lens barrel. It is a schematic diagram which shows how to move the prism and the 3rd lens group of the lens barrel which concerns on 1st Embodiment. It is sectional drawing which shows the state which accommodated the 1st, 2nd lens group, after retracting the 3rd lens group lens frame 13k of the lens barrel which concerns on 1st Embodiment. It is a schematic diagram which shows the example of how to move the prism and the 3rd lens group of the lens barrel which concerns on 2nd Embodiment. It is sectional drawing which shows the state which accommodated the 1st, 2nd lens group, after retracting | retreating the prism holder and the 3rd lens group lens frame to a different direction, respectively, of the lens barrel which concerns on 2nd Embodiment. It is a perspective view which shows the example of how to move the prism and the 3rd lens group of the lens barrel which concerns on 3rd Embodiment. It is sectional drawing which shows the state which accommodated the 1st, 2nd lens group after moving the 3rd lens group lens frame of the lens barrel which concerns on 3rd Embodiment.

Explanation of symbols

11 First lens group 11k First lens group lens frame 12 Second lens group 12k Second lens group lens frame 13 Third lens group 13k Third lens group lens frame 14 Fourth lens group 14k Fourth lens group lens frame 15 First 5 lens group 15k fifth lens group lens frame 16, 17 guide shaft 21, 61 engaging member 41 fixed cylinder 42 cam cylinder 43 intermediate cylinder 50 lens barrel OF optical filter P prism PH prism holder 100 camera

Claims (6)

A lens barrel having a plurality of lens groups, a lens group frame holding the lens groups, and a reflecting member disposed between the lens groups and bending an optical axis;
A lens group lens frame disposed on the image plane side from the reflecting member and moved during photographing;
An engaging member that engages when the lens group lens frame moves beyond a moving region during photographing;
A lens group lens frame disposed on the image plane side from the reflecting member and not moved during photographing,
In the change from shooting state to non-shooting state,
A lens group that is arranged on the image plane side with respect to the reflecting member and is not moved during photographing by rotating the engagement member when a lens group frame that is moved during photographing is moved beyond a moving region during photographing. And a lens barrel that moves the reflecting member to house a lens group closer to the object side than the reflecting member. The lens barrel according to claim 1, wherein both the reflecting member and a lens group that is not moved during photographing are moved in a direction approaching the image sensor. The lens barrel according to claim 1, wherein the reflecting member is moved in a direction away from the image sensor, and a lens group that is not moved during photographing is moved in a direction approaching the image sensor. A lens barrel having a plurality of lens groups, a lens group frame holding the lens groups, and a reflecting member disposed between the lens groups and bending an optical axis;
A lens group lens frame disposed on the image plane side from the reflecting member and moved during photographing;
A lens group lens frame disposed on the image plane side from the reflecting member and not moved during photographing,
In the change from shooting state to non-shooting state,
A lens that is arranged on the image plane side with respect to the reflecting member and is moved at the time of shooting when the lens group frame is moved beyond a moving area at the time of shooting, a part of the lens group frame is not moved at the time of shooting. A lens barrel that engages with a part of a group lens frame, moves a lens group that is not moved during photographing, and houses a lens group on the object side with respect to the reflecting member. The lens group that is not moved in the shooting state but moved in the change to the non-shooting state is moved to a position within the outer shape of the lens group lens frame that is arranged on the object side of the reflecting member and is movable. The lens barrel according to claim 4, wherein the lens barrel is characterized. An imaging apparatus comprising the lens barrel according to claim 1.

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