JP4028721B2 - Electronic camera - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a so-called folding optical system that includes a reflecting member such as a prism that bends the optical axis of a light beam incident from a subject in an electronic camera, specifically, an electronic camera that can record a subject image as electronic image data. The present invention relates to an electronic camera employing the system.
[0002]
[Prior art]
Conventionally, a subject image acquisition means, for example, charge coupling, in which a subject image formed based on a light beam from a subject (hereinafter referred to as a subject light beam) incident on a photographing optical system composed of a plurality of lens groups is arranged at a predetermined position. A desired subject image is obtained by forming an image on a light receiving surface of an imaging device such as a CCD (Charge Coupled Device), and can be recorded on a predetermined recording medium in a predetermined form. In addition, electronic cameras such as so-called electronic still cameras and digital video cameras are generally put into practical use and widely used.
[0003]
Such a conventional electronic camera or the like is configured to include a lens barrel device (hereinafter referred to as a lens unit) including a photographing optical system such as a plurality of lenses in order to form a subject image at a predetermined position. Is normal.
[0004]
A lens unit in a conventional electronic camera or the like includes, for example, a prism or a reflecting mirror in its optical path in order to guide a subject light beam incident toward the inside of the electronic camera via a plurality of lenses onto a light receiving surface of an image sensor or the like. In general, there are various forms such as a configuration in which a predetermined reflecting member such as a light beam is disposed and a light path of a subject light beam is bent in a predetermined direction, for example, a direction substantially perpendicular to the incident optical axis. It's being used.
[0005]
For the lens unit to which the so-called bending optical system as described above is applied, various proposals have been made by, for example, Japanese Patent Laid-Open No. 9-163206.
[0006]
In the electronic camera disclosed by the above-mentioned Japanese Patent Application Laid-Open No. 9-163206, a prism is used as a reflecting member that bends the optical axis of a subject light beam in a substantially perpendicular direction. As a result, the electronic camera itself can be downsized while ensuring the required optical path length.
[0007]
Further, a general electronic camera or the like is usually taken out and used by a user outdoors. For this reason, the portability of electronic cameras and the like has been regarded as more important than before, and there is a demand for further reduction in thickness and size of the camera itself.
[0008]
Therefore, as shown in the electronic camera disclosed in the above-mentioned Japanese Patent Application Laid-Open No. 9-163206 etc., it is possible to adopt a so-called bending optical system in which a reflecting member such as a prism is arranged in the optical path of the photographing optical system. This is a very advantageous means for downsizing the electronic camera itself, in particular, for reducing the thickness of the camera in the depth direction.
[0009]
On the other hand, in order to improve portability when carrying an electronic camera or the like, between a normal use position where a photographing operation can be performed and a storage position retracted from the use position toward the inside of the housing of the electronic camera. A so-called photographic lens retractable electronic camera equipped with a lens unit configured to move a part of the lenses constituting the photographic optical system and thereby reduce the overall length of the photographic optical system when carried is generally used. It has been put into practical use.
[0010]
[Problems to be solved by the invention]
However, in an electronic camera to which a bending optical system is applied, depending on the configuration of the photographing optical system, a lens group may be arranged in a front part of the reflecting member such as a prism.
[0011]
In such a case, the dimension in the depth direction of the electronic camera itself is restricted by the size of the front lens group and the reflecting member, and there is a problem that there is a limit to reducing the thickness.
[0012]
The present invention has been made in view of the above-described points, and an object of the present invention is to provide an additional housing in an electronic camera including a lens unit that employs a bending optical system using a reflecting means such as a prism. It is an object to provide an electronic camera equipped with a mechanism capable of realizing a reduction in thickness.
[0013]
[Means for Solving the Problems]
  To achieve the above object, an electronic camera according to a first aspect of the present invention holds a lens group that takes in a light beam incident from the subject side along the first optical axis, and holds the lens group and protrudes from a housing. A lens frame that is movably provided in a direction along the first optical axis between a use position and a storage position that retracts toward the inside of the housing, and a light beam that has passed through the lens group is the first optical axis. A prism that bends in a direction along a second optical axis that intersects the optical axis, and an image sensor that receives the light beam bent by the prism, the prism imaging the light beam that has passed through the lens group. It is configured to be movable between a reflection position that leads to the element side and a retreat position that secures a storage space for the lens frame at the storage position., And is configured to retract toward the side along the second optical axis where the image sensor is disposed.It is characterized by that.
[0014]
In order to achieve the above object, an electronic camera according to a second aspect of the present invention is the electronic camera according to the first aspect of the present invention, wherein the luminous flux is provided from the prism provided on the second optical axis and disposed at the reflection position. And a guide shaft for guiding the movement of the second lens group in the direction along the second optical axis, and the guide The shaft is configured to also guide the movement of the prism.
[0015]
In order to achieve the above object, an electronic camera according to a third invention is the electronic camera according to the first invention, wherein the lens frame moves to a use position in accordance with the movement of the prism to the reflection position. The prism is configured to move to the storage position in accordance with the movement of the prism to the retracted position.
[0016]
In order to achieve the above object, an electronic camera according to a fourth aspect of the present invention is the electronic camera according to the third aspect of the present invention, further comprising a prism frame that supports the prism, and the lens frame includes one of the prism frames. An engaging member is provided to engage the part, and when the prism moves to the retracted position, a part of the prism frame engages with the engaging member of the lens frame and the lens frame moves to the storage position. It is comprised so that it may do.
[0017]
In order to achieve the above object, an electronic camera according to a fifth aspect of the invention is the electronic camera according to the fourth aspect of the invention, further comprising an actuator for moving the prism, and the actuator is fixed to the prism frame. The prism is arranged at a position close to the back surface side of the reflecting surface of the prism.
[0018]
In order to achieve the above object, an electronic camera according to a sixth aspect of the present invention is the electronic camera according to the first to fifth aspects, further comprising power supply operating means for opening and closing a power supply, wherein the prism comprises: It is configured to move to a reflection position in response to an opening operation by the power operation means and to move to a retreat position in response to a closing operation by the power operation means.
[0019]
In order to achieve the above object, an electronic camera according to a seventh aspect of the present invention is a lens group that takes in a light beam incident from the subject side along the first optical axis, holds the lens group, and protrudes from the housing. A lens frame that is movably provided in a direction along the first optical axis between a use position and a storage position that retracts toward the inside of the housing, and a light beam that has passed through the lens group is the first optical axis. A prism that bends in a direction along a second optical axis that intersects the light beam, and a light beam from the prism that is provided on the second optical axis and disposed at the reflection position on the light receiving surface of the imaging element. A second lens group that forms an image on the lens, and an image sensor that receives the light beam bent by the prism. The prism reflects the light beam that has passed through the lens group toward the image sensor side. And in the storage position The second lens group does not interfere with the prism at the retracted position prior to the movement of the prism to the retracted position. It is characterized by retreating to a position.
[0020]
In order to achieve the above object, an electronic camera according to an eighth invention is the electronic camera according to the seventh invention, wherein the second lens group is the prism in the retracted position in accordance with a closing operation by the power operation means. It is characterized by retreating to a position where it does not interfere with.
[0021]
In order to achieve the above object, an electronic camera according to a ninth aspect of the invention is a lens group that takes in a light beam incident from the subject side along the first optical axis, holds the lens group, and projects from the housing. A lens frame that is movably provided in a direction along the first optical axis between a use position and a storage position that retracts toward the inside of the housing, and a light beam that has passed through the lens group is the first optical axis. A reflecting mirror that bends in a direction along a second optical axis that intersects the optical axis, and an imaging device that receives the light beam bent by the reflecting mirror, and the reflecting mirror transmits the light beam that has passed through the lens group. Is configured to be movable between a reflection position that guides the image sensor to the image sensor side and a retreat position that secures a storage space for the lens frame at the storage position, and the reflecting mirror further includes the second mirror. The direction taken along the optical axis Characterized in that it is configured to retreat toward the side where the element is located.
[0027]
DETAILED DESCRIPTION OF THE INVENTION
The present invention will be described below with reference to the illustrated embodiments.
FIG. 1 is a perspective view showing an appearance of the front side of the electronic camera according to the first embodiment of the present invention. FIG. 2 is a perspective view showing an appearance of the back side of the electronic camera of FIG. FIG. 3 is a perspective view schematically showing main internal components of the electronic camera of FIG.
[0028]
FIG. 4 is a perspective view showing a lens unit extracted from the electronic camera, and shows a case where the electronic camera is in use. 5 and 6 show an enlarged view of a part of the lens unit in the electronic camera. FIG. 5 shows a reflecting member (prism) of the lens unit, its driving mechanism, a lens frame, and a retracting driving mechanism thereof. It is a principal part expansion disassembled perspective view which mainly shows the member to comprise. FIG. 6 is an enlarged perspective view of a main part illustrating a state in which a part of the lens unit in the electronic camera is enlarged and the part is assembled.
[0029]
FIG. 5 shows a state where the prism in the lens unit is at a predetermined reflection position, and FIG. 6 shows a state where the prism in the lens unit is at a predetermined retracted position.
[0030]
First, the configuration of an electronic camera including the lens unit (lens frame device) of the present embodiment will be described below with reference to FIGS. 1, 2, and 3.
As shown in FIGS. 1, 2, and 3, the electronic camera 1 according to the present embodiment is provided with various components inside, and the housing is formed so that the dimension in the depth direction is relatively small. is there.
[0031]
The casing of the electronic camera 1 has an outer surface constituted by an exterior member 11. On the upper surface of the exterior member 11, operation members such as a release button 12 for instructing execution of a photographing operation and the like are disposed.
[0032]
1 to 3, only the release button 12 is illustrated as an operation member in the electronic camera 1, but the exterior member 11 is also used in the electronic camera 1 like a conventional general electronic camera. It is assumed that a plurality of various operation members are arranged on the surface. Since these other operation members are members not directly related to the present invention, their illustration is omitted in order to prevent complication of the drawings.
[0033]
As shown in FIG. 1, a strobe light irradiation window 13 constituting a part of the strobe device is disposed on a front surface of the exterior member 11 at a predetermined position near the upper edge.
[0034]
As shown in FIG. 3, a photographing lens unit 2 (hereinafter simply referred to as a lens unit) made up of components such as a photographing optical system is provided at a predetermined position adjacent to the strobe light irradiation window 13.
[0035]
A retractable lens frame 21 that is a part of the lens unit 2 and is a lens group that holds the objective optical system 21a that is the first lens group and is a lens group in the previous stage of the photographing optical system. It is movably arranged in the front-rear direction, that is, in the direction of the arrow X shown in FIG.
[0036]
Further, as shown in FIG. 2, a display device 17 and a power operation member 18 as a power operation means are disposed at predetermined positions on the back side of the electronic camera 1, respectively.
[0037]
Here, the display device 17 converts the subject image acquired via the photographing optical system into an electrical signal by an imaging element (not shown), and then based on image data generated through predetermined signal processing. A liquid crystal display device (LCD) or the like for displaying an image corresponding to the subject image is applied, and the display surface is arranged toward the back side.
[0038]
The power operation member 18 is an operation member that is disposed inside the electronic camera 1 and that is linked to a switch member that opens and closes the power source. The power operation member 18 is configured to be able to switch the open / close state of the power source by sliding operation. Yes.
[0039]
As shown in FIG. 3, a plurality of circuit boards 15 are stacked in a direction along the depth direction of the electronic camera 1 in a predetermined position in the substantially central portion of the housing of the electronic camera 1. It is arranged.
[0040]
The circuit board 15 is interlocked with various operation members such as a release button 12 and a power supply operation member 18 disposed on the surface of the exterior member 11 (in FIG. 3, other than the release button 12 is not shown). A switch member (not shown) for generating a predetermined instruction signal, and various electric components constituting the control circuit, power supply circuit, image signal processing circuit, etc. of the electronic camera 1 are mounted. Accordingly, when an operation member such as the release button 12 is operated by the user of the electronic camera 1, a predetermined instruction signal corresponding to the operation is generated.
[0041]
The circuit board 15 is an electric board provided in the lens unit 2, and an imaging board 28 on which an imaging element or the like (not shown) that receives a subject light beam and performs photoelectric conversion is mounted, or the lens unit 2. Prism retracting and lens frame retracting actuators 42 and the like that are provided at predetermined positions and contribute to the retracting and retracting drive of the retractable lens frame 21 and the retracting drive of the prism 40 (described later) are electrically connected.
[0042]
Inside the electronic camera 1, a predetermined position near one end, that is, a space at one end of the spaces formed at both ends of the circuit board 15 is connected to the main power supply of the electronic camera 1. A battery 16 is arranged. Although not shown, the battery 16 and the circuit board 15 are electrically connected by a predetermined power connection line. As a result, the electric power of the battery 16 is supplied to the electrical components of the electronic camera 1 through a predetermined power supply circuit mounted on the circuit board 15.
[0043]
The lens unit 2 described above is fixed in the space at the other end of the internal space of the electronic camera 1. The lens unit 2 includes a photographing optical system composed of a plurality of optical lenses such as the objective optical system 21a, and a prism 40 (not shown in FIG. 3) that is a reflecting member that bends the optical axis of the photographing optical system at a predetermined position. 4 to 6) and other structural members that support these optical members, for example, a retractable lens frame 21 that is a lens frame that holds the objective optical system 21a, and a prism that holds the prism 40. A drive source for moving the collapsible lens frame 21 in a predetermined direction simultaneously with the movement of the structural members such as the holding frame 41 (not shown in FIG. 3) and the prism holding frame 41 to a predetermined position. The lens frame retracting mechanism and the prism driving mechanism including the prism retracting and lens frame retracting actuators 42 and the like, and the electric members such as the imaging substrate 28 are respectively placed at predetermined positions. It has been set.
[0044]
Next, the configuration of the lens unit 2 applied to the electronic camera 1 of the present embodiment will be described in detail below.
As described above, the lens unit 2 is disposed at a predetermined position inside the electronic camera 1. As shown in FIG. 4, the lens unit 2 includes a plurality of lens groups (21a, 22a, 23a, and 24a) that contribute to photographing and a plurality of lens frames (21, 22, 23, and 24a) that respectively hold these lens groups. 24), a lens frame driving mechanism for moving a part (22, 23) of these lens frames in a predetermined direction, and the predetermined lens frame (21) being movable in a predetermined direction. The lens frame retracting mechanism to be supported in this manner and the optical axis O1 of the light beam incident on the objective optical system 21a which is the first lens group in the photographing optical system of the lens unit 2 are bent, and the light beam is captured by the imaging element ( A prism 40, which is a reflecting member for guiding the light receiving surface of the light receiving surface of the light receiving surface of the light receiving surface, a prism holding frame 41 for holding the prism 40, and the prism holding frame 41 so as to be movable in a predetermined direction. It is constituted by a prism drive mechanism for supporting.
[0045]
A specific configuration of the lens unit 2 is as follows.
Various constituent members constituting the lens unit 2 are disposed at predetermined positions on the upper surface of a lens unit base (hereinafter simply referred to as a base) 25 as shown in FIG.
[0046]
The photographing optical system in the lens unit 2 is a so-called folding optical system. That is, the photographing optical system in the lens unit 2 of the electronic camera 1 is a first lens group disposed at a predetermined position on the front side of the electronic camera 1 and is in a direction along its own optical axis O1. An objective optical system 21a (collapsed lens group) arranged so as to be movable, and a light beam transmitted through the objective optical system 21a, and an optical axis O1 of the objective optical system 21a to guide it in a predetermined direction. And a plurality of optical members such as a second lens group including a plurality of lens groups 22a, 23a, and 24a that constitute another part of the photographing optical system. .
[0047]
Here, the plurality of lens groups constituting the second lens group are provided on the extension of the optical axis O2 after being bent by the prism 40. The plurality of lens groups are arranged in the order of the variable power lens group 22a, the correction system lens group 23a, and the fixed lens group 24a from the side close to the first lens group (objective optical system 21a). As a result, the second lens group forms an image of the light flux from the prism 40 on the light receiving surface of the image sensor (not shown).
[0048]
The variable power lens group 22a is a lens group that moves in a direction along the optical axis O2 by a lens frame driving mechanism driven based on a predetermined variable power instruction signal, thereby contributing to a variable power operation.
[0049]
The correction system lens group 23a is a lens group that performs a focus adjustment operation and corrects a shift in a focus adjustment state caused by a zooming operation.
[0050]
The fixed lens group 24a is a lens group that finally forms a subject image on a light receiving surface of an imaging element (not shown).
[0051]
These optical members and the like are directed from the position closest to the subject toward the image sensor along the optical axes O1 and O2, toward the imaging element side, the objective optical system 21a, the prism 40, the variable magnification system lens group 22a, the correction system lens group 23a, They are arranged in the order of the fixed lens group 24a. The prism 40 is provided in the vicinity of the intersection of the extended lines of the optical axes O1 and O2, and the objective optical system 21a (first lens group) disposed in the front stage from this is disposed on the optical axis O1. The variable power lens group 22a, the correction system lens group 23a, and the fixed lens group 24a (second lens group) arranged at the rear stage from 40 are arranged on the optical axis O2.
[0052]
An imaging substrate 28 on which an imaging element (not shown) is mounted is disposed at a predetermined position behind the fixed lens group 24a.
[0053]
Further, the image pickup device (the image pickup substrate 28 on which the image pickup device is mounted) is disposed on an extension line of the optical axis O2 after being bent by the prism 40. Accordingly, the luminous flux from the subject existing at the position facing the front surface of the electronic camera 1 is incident on the objective optical system 21a (collapsed lens group) of the photographing optical system. After the transmission, the optical axis O1 is bent in the direction of the optical axis O2 by the prism 40 and transmitted through the lens groups 22a, 23a, and 24a, and then irradiated to the light receiving surface of the imaging device (imaging substrate 28). Has been.
[0054]
Here, in the light beam incident on the lens unit 2, the optical axis on the incident side (subject side) is indicated by reference numeral O1 as shown in FIGS. 4 to 6, and the optical axis indicated by reference numeral O1 is the first optical axis. It is said to be the optical axis.
[0055]
The optical axis orthogonal to the first optical axis O1 is indicated by reference numeral O2 as shown in FIGS. 4 to 6, and the optical axis indicated by reference numeral O2 is referred to as a second optical axis. . The second optical axis O2 is the optical axis of the light beam after being bent by the prism 40, and passes through substantially the center of the variable power system lens group 22a, the correction system lens group 23a, and the fixed lens group 24a for imaging. This is the central axis of the light beam reaching the image sensor (not shown) on the substrate 28.
[0056]
A connector portion 28a is mounted on an end portion of the imaging board 28, and the imaging board 28 is mounted on the circuit board 15 on which an image signal processing circuit or the like is mounted via a flexible printed board 28b or the like connected to the connector section 28a. (See FIG. 3).
[0057]
The prism 40 is held by a prism holding frame 41, and the prism holding frame 41 is slidably arranged in a direction along the optical axis O2 by a prism driving mechanism. A detailed configuration of the prism driving mechanism will be described later with reference to FIGS.
[0058]
An objective optical system 21 a is disposed in the vicinity of the prism holding frame 41 and near the front surface of the electronic camera 1. The objective optical system 21a is held by the retractable lens frame 21 as described above, and the retractable lens frame 21 is supported by a lens frame retracting mechanism so as to be movable in the direction along the optical axis O1. The detailed configuration of this lens frame retracting mechanism will also be described later with reference to FIGS.
[0059]
On the other hand, a fixed frame 24 that holds the fixed lens group 24 a is disposed near the other end of the base 25. Thereby, the fixed lens group 24 a is fixedly held at a predetermined position on the upper surface of the base 25.
[0060]
A drive shaft 26 and a guide shaft 27 that are two guide shafts are suspended between the prism holding frame 41 and the retractable lens frame 21 and the fixed frame 24. Of these two guide shafts, the drive shaft 26 serves as a main guide shaft for guiding the zoom lens frame 22 and the correction lens frame 23 to move in the direction along the optical axis O2, as will be described later. It plays a role.
[0061]
The guide shaft 27 serves to prevent the zoom lens frame 22 and the correction lens frame 23 from rotating about the drive shaft 26, and the frames 22 and 23 move in a direction along the optical axis O2. It serves as a secondary guide shaft that guides the user when performing the operation.
[0062]
One end of the drive shaft 26 is pivotally supported by a shaft support portion 25a formed integrally with the base 25 in the vicinity of the prism holding frame 41 and the retractable lens frame 21 (see FIGS. 4 to 6). ).
[0063]
On the other hand, the other end portion of the drive shaft 26 is rotatably supported at a predetermined position of the fixed frame 24. In this case, the other end portion of the drive shaft 26 passes through a predetermined portion of the fixed frame 24, and the distal end portion of the drive shaft 26 protrudes outward of the fixed frame 24. A drive gear 26 b is fixed to the projecting tip of the drive shaft 26.
[0064]
In addition, one end portion of the guide shaft 27 is also provided with a shaft support portion 25b (not shown in FIG. 4) that is formed integrally with the base 25 in the vicinity of the prism holding frame 41 and the retractable lens frame 21 in the same manner as the drive shaft 26 described above. (See FIGS. 5 and 6).
[0065]
The drive shaft 26 and the guide shaft 27 include a variable power lens frame 22 that fixes and holds the variable power system lens group 22a and a correction lens frame 23 that holds and holds the correction system lens group 23a in a direction along the optical axis O2. Both frames 22 and 23 are supported so that they can move independently.
[0066]
In this case, a through hole formed in the direction along the optical axis O2 is formed in one support end 23d of the correction lens frame 23. The drive shaft 26 is rotatably inserted into the through hole.
[0067]
The correction lens frame 23 has a cam pin 23b implanted at a predetermined position in the vicinity of the one support end 23d. The tip of the cam pin 23b penetrates the support end 23d, and the correction described above. The lens frame 23 protrudes inside the through hole.
[0068]
On the other hand, a cam groove 26 a that is a drive groove is provided in a part on the peripheral surface of the drive shaft 26. The cam groove 26 a is formed over a predetermined range on the peripheral surface of the drive shaft 26 in the vicinity of the correction lens frame 23. The cam pin 23b is engaged with the cam groove 26a.
[0069]
Thus, since the cam groove 26a and the cam pin 23b of the correction lens frame 23 are cam-engaged, when the drive shaft 26 is rotated, the correction system lens group 23a is in a predetermined direction (a direction along the optical axis O2). It moves in the direction of arrow Y in FIG.
[0070]
Further, a bearing portion 23e having a substantially U-shaped cross section is formed at the other end portion of the correction lens frame 23, and a guide shaft 27 is disposed inside the bearing portion 23e. In this case, the guide shaft 27 serves to prevent the correction lens frame 23 from rotating about the drive shaft 26 and to guide the movement of the correction lens frame 23 in the direction along the optical axis O2. Yes.
[0071]
Therefore, when the drive shaft 26 is rotated by a lens frame drive mechanism (an actuator 32 or the like described later), the correction lens frame 23 is only in the direction along the optical axis O2 (arrow Y direction) along with this rotation operation. It is supposed to move.
[0072]
On the other hand, a through hole similar to the through hole of the correction lens frame 23 described above is formed in one support end 22d of the variable magnification lens frame 22 in a direction along the optical axis O2. The drive shaft 26 is rotatably inserted into the through hole.
[0073]
The zoom lens frame 22 is also provided with a cam pin 22b at a predetermined position, and the tip of the cam pin 22b is a drive groove provided on a part of the peripheral surface of the drive shaft 26, that is, a cam groove. 26c is cam-engaged. The cam groove 26c is formed over a predetermined range on the peripheral surface of the drive shaft 26 in the vicinity where the variable magnification lens frame 22 is disposed.
[0074]
Thus, since the cam groove 26c and the cam pin 22b of the zoom lens frame 22 are cam-engaged, when the drive shaft 26 is rotated, the zoom lens group 22a is moved in a predetermined direction (in the optical axis O2). A direction along the direction (Y direction in FIG. 4).
[0075]
Further, similarly to the correction lens frame 23 described above, a bearing portion 22e having a substantially U-shaped cross section is formed at the other end portion of the variable magnification lens frame 22, and inside the bearing portion 22e, A guide shaft 27 is arranged.
[0076]
In this case, the guide shaft 27 serves to prevent the zoom lens frame 22 from rotating about the drive shaft 26 as a center of rotation and guide the movement of the zoom lens frame 22 in the direction along the optical axis O2. is doing.
[0077]
Accordingly, when the drive shaft 26 is rotated by a predetermined lens frame drive mechanism (actuator 32 or the like described later), the zoom lens frame 22 is moved along the optical axis O2 (arrow Y direction) along with the rotation operation. Only to move to.
[0078]
In the vicinity of the drive gear 26b of the drive shaft 26, an actuator constituting a part of a lens frame drive mechanism for moving the correction lens frame 23 and the variable power lens frame 22 as driven elements in a direction along the optical axis O2. 32 etc. are arranged. The actuator 32 is fixed at a predetermined position on the upper surface of the base 25. The actuator 32 is electrically connected to the circuit board 15 by a predetermined connection means (not shown).
[0079]
A drive gear 32 a is fixed to the tip of the rotation shaft of the actuator 32. The drive gear 32 a meshes with the drive gear 26 b of the drive shaft 26. Accordingly, the driving force of the actuator 32 is thereby transmitted to the driving shaft 26 and can be rotated in a predetermined direction.
[0080]
When the drive shaft 26 rotates, as described above, the correction lens frame 23 extends along the optical axis O2 (FIG. 4) due to the cam coupling between the cam groove 26a of the drive shaft 26 and the cam pin 23b of the correction lens frame 23. It moves in the direction of arrow Y). At the same time, the zoom lens frame 22 also moves in the direction along the optical axis O2 (the direction indicated by the arrow Y in FIG. 4) by the cam action of the cam groove 26c of the drive shaft 26 and the cam pin 22b of the zoom lens frame 22. It has become.
[0081]
On the upper surface of the base 25, the prism holding frame 41 for holding the prism 40 as described above and the prism holding frame 41 at a predetermined position near the end opposite to the side where the lens frame driving mechanism is provided, A prism drive mechanism / collapsed lens frame 21 and its lens frame collapsible mechanism are disposed.
[0082]
The prism driving mechanism and the lens frame retracting mechanism are configured as shown in FIGS.
The prism holding frame 41 is formed by a base end portion 41 a having support arm portions 41 b and 41 d for slidably supporting the frame 41 and a holding portion 41 e that holds the prism 40.
[0083]
A through hole formed in the direction along the optical axis O2 is formed in the vicinity of the distal end portion of one support arm portion 41b of the base end portion 41a. The drive shaft 26 is inserted into the through hole so as to be rotatable and slidable.
[0084]
Further, a bearing portion 41dd having a substantially U-shaped cross section is formed in the vicinity of the distal end portion of the other support arm portion 41d of the base end portion 41a, and the guide shaft 27 is disposed inside the bearing portion 41dd. Yes.
[0085]
Accordingly, the prism holding frame 41 is supported by the drive shaft 26 and the guide shaft 27 so as to be slidable only in the direction along the optical axis O2.
[0086]
A section 41c having a substantially L-shaped cross section is integrally formed at the tip of the support arm 41b. On the other hand, a frame position detection member 43 for detecting the position of the prism holding frame 41 is disposed on the base 25.
[0087]
The frame position detection member 43 is disposed such that its long side extends in a direction along the optical axis O2. In the vicinity of both end portions in the long side direction of the frame position detection member 43, two detection portions 43a and 43b each having a substantially concave cross section are formed. The detection units 43a and 43b are configured to include detection means such as a photo sensor, for example.
[0088]
When the prism holding frame 41 is driven and slides in the direction along the optical axis O <b> 2, the segment 41 c of the prism holding frame 41 passes through the concave gaps of the two detection portions 43 a and 43 b of the frame position detection member 43. The frame position detection member 43 is disposed at a predetermined position on the upper surface of the base 25 so as to pass through.
[0089]
A predetermined signal is generated when the segment 41c of the prism holding frame 41 passes through one of the concave gaps of the two detection units 43a and 43b of the frame position detection member 43. In response, a predetermined control circuit (not shown) of the electronic camera 1 can detect the position of the prism holding frame 41.
[0090]
Here, the predetermined position detected by the frame position detection member 43 is a position where the prism holding frame 41 should be disposed when the electronic camera 1 is set in a use state where the photographing operation can be performed, that is, the objective optical system. The reflection position where the light beam transmitted through 21a can be guided to the image sensor side, and the position where the prism holding frame 41 should be disposed when the electronic camera 1 is set to the non-use state, that is, the retracted lens frame 21 is stored. And a retreat position where a storage space can be secured.
[0091]
The reflection position of the prism holding frame 41 is detected by the detecting unit 43a, and the retracted position of the prism holding frame 41 is detected by the detecting unit 43b.
[0092]
On the other hand, at a position close to the back surface 40a of the reflecting surface of the prism 40 held by the prism holding frame 41, the prism retracting actuator 42 and the lens frame retracting actuator 42 are located with respect to the holding portion 41e of the prism holding frame 41. For example, it is fixed by a screw 52 or the like.
[0093]
A pinion gear 42 a is fixed to the tip of the rotating shaft of the actuator 42. Further, a support shaft 42c is planted in the vicinity of the rotation shaft of the actuator 42 so as to be rotatable, and a gear 42b is fixedly provided at the tip of the support shaft 42c. The pinion gear 42a meshes with the gear 42b.
[0094]
The gear 42 b meshes with a rack gear 45 formed at a predetermined position on the upper surface side of the base 25. The rack gear 45 is arranged such that its long side extends in a direction along the optical axis O2.
[0095]
Therefore, when the actuator 42 receives a predetermined instruction signal and starts to rotate in a predetermined direction, the driving force of the actuator 42 is transmitted to the rack gear 45 through the pinion gear 42a and the gear 42b. The prism holding frame 41 itself on which the actuator 42 is fixed is moved in the direction along the optical axis O2.
[0096]
Thus, the prism holding frame 41 causes the reflection position for guiding the light beam transmitted through the objective optical system 21a, which is a lens group held by the collapsible lens frame 21 described later, to the image sensor side, and the electrons of the collapsible lens frame 21. The camera 1 is configured to be freely movable between a retracted position that secures a storage space inside the camera 1.
Thus, the prism driving mechanism is configured.
[0097]
At a predetermined position of the holding portion 41e of the prism holding frame 41, the engagement pin 41f is provided in a direction orthogonal to the optical axes O1 and O2 and projecting outward from the prism holding frame 41. Yes. The engagement pin 41f is disposed so as to engage with a guide slit 44b provided at a predetermined position of an engagement member 44 described later.
[0098]
When the prism holding frame 41 moves in the direction along the optical axis O2 in a state where the engagement pin 41f and the guide slit 44b are engaged, the retractable lens frame 21 moves along the optical axis O1 in conjunction with this movement. To move to.
Thus, an interlocking mechanism that interlocks the retractable lens frame 21 and the prism holding frame 41 is configured.
[0099]
On the other hand, in the vicinity of one end of the base 25, two guide support shafts 33 that support the retractable lens frame 21 are implanted at a predetermined position on the outer edge side of the prism holding frame 41. The guide support shaft 33 is provided to slidably support the retractable lens frame 21 in a direction along the optical axis O1.
[0100]
The retractable lens frame 21 includes a cylindrical lens holding portion 21e for holding the objective optical system 21a, two support arm portions 21b and 21c for slidably supporting the retractable lens frame 21, and the retracted lens. The lens frame 21 and the prism holding frame 41 are configured by a connecting portion 21f to which an engaging member 44 that secures interlocking is secured.
[0101]
An objective optical system 21a, which is a lens group in the previous stage of the photographing optical system, is fixedly held by the lens holding portion 21e. Two support arm portions 21b and 21c are integrally provided at a predetermined position on the outer peripheral surface of the lens holding portion 21e so as to protrude outward. Of these, a through hole is formed at the tip of the support arm portion 21b, and one guide support shaft 33 is inserted into the through hole. An elastic member 36 such as an extensible coil spring is wound around the guide support shaft 33. Therefore, the one guide support shaft 33 serves to guide the movement of the retractable lens frame 21 in the direction along the optical axis O1 while slidably supporting the retractable lens frame 21.
[0102]
Further, a bearing portion having a substantially U-shaped cross section is formed at the distal end portion of the support arm portion 21c, and the other guide support shaft 33 is disposed inside the bearing portion. As a result, the other guide support shaft 33 slidably supports the retractable lens frame 21 and the retractable lens frame 21 rotates around the optical axis O1 around the other guide support shaft 33 as a rotation center. At the same time, it serves to guide the movement of the retractable lens frame 21 in the direction along the optical axis O1.
[0103]
The connecting portion 21f is integrally formed at a predetermined position on the outer peripheral surface of the holding portion 21e. An engaging member 44 provided to secure the interlocking between the retractable lens frame 21 and the prism holding frame 41 is attached to the connecting portion 21f by fastening means such as a screw 51. Specifically, two screw holes 21d are formed in the connecting portion 21f, and holes 44a are formed at predetermined positions of the engaging member 44 correspondingly. The engaging member 44 is attached to the connecting portion 21 f (side surface portion) of the retractable lens frame 21 via a screw 51.
[0104]
Further, the engagement member 44 has a long hole formed in a direction along the optical axis O2 and a direction having a predetermined angle with respect to the optical axis O2, and a length formed in the direction along the optical axis O2. Guide slits 44b each having a continuous hole are formed.
[0105]
When the retractable lens frame 21 with the engagement member 44 attached is attached to a predetermined position (guide support shaft 33) of the lens unit 2, the engagement pin 41f of the prism holding frame 41 is guided by the guide slit 44b. It is comprised so that both may engage by arrange | positioning inside (refer FIG. 6).
[0106]
At this time, the retractable lens frame 21 is urged in the direction along the optical axis O1 by the urging force of the elastic member 36 and in the direction of the arrow X1 in FIGS. And the guide slit 44b are engaged with each other, the retractable lens frame 21 is positioned at a predetermined position.
[0107]
Accordingly, the retractable lens frame 21 is thus moved in the direction along the optical axis O2 of the prism holding frame 41, and in the use position protruding toward the front surface of the electronic camera 1 and inside the camera 1. It is configured to be able to move freely between the retracted and retracted storage positions.
The lens frame retracting mechanism is thus configured.
[0108]
The operation of the lens unit 2 in the electronic camera 1 of the present embodiment configured as described above will be described below.
[0109]
When the electronic camera 1 is not in use, the retractable lens frame 21 is in a predetermined storage position retracted toward the inside of the exterior member 11 of the electronic camera 1 as shown in FIG. Further, at this time, the prism holding frame 41 is a position retracted from the reflection position, and is in a retracted position capable of securing a storage space for storing the retractable lens frame 21 to a predetermined storage position.
[0110]
In this state, when the user of the electronic camera 1 performs a predetermined operation on the power operation member 18, the power operation member 18 acts on a predetermined power switch member. As a result, the power state of the electronic camera 1 is switched to the open (on) state. Then, a control circuit (not shown) of the electronic camera 1 generates an instruction signal for moving the retractable lens frame 21 from the storage position to the use position.
[0111]
In response to this instruction signal, the actuator 42 starts to rotate in a predetermined direction. Thereby, the prism holding frame 41 is a direction along the optical axis O2 from a predetermined retracted position and away from the side where the retractable lens frame 21 is arranged, that is, the image pickup surface of the image pickup element (arrow Y1 in FIG. 6). Start moving in the direction).
[0112]
As described above, the engaging pin 41f and the guide slit 44b are engaged with the prism holding frame 41 and the retractable lens frame 21. Therefore, as the prism holding frame 41 moves in the direction of the arrow Y1 in FIG. 6, the engagement pin 41f moves along the guide slit 44b.
[0113]
At this time, the retractable lens frame 21 is guided by the guide support shaft 33 so as to move only in the direction along the optical axis O1, and the retractable lens frame 21 is aligned along the optical axis O1 by the urging force of the elastic member 36. Is biased in the direction.
[0114]
As a result, the engaging pin 41f moves the retractable lens frame 21 toward the front of the electronic camera 1, that is, in the direction of the arrow X1 in FIG. Accordingly, in conjunction with the movement of the prism holding frame 41 in the direction of the optical axis O2 and in the direction of the arrow Y1 in FIG. 6, the retractable lens frame 21 is in the direction along the optical axis O1 and in the direction of the arrow X1 in FIG. Move to.
[0115]
When the prism holding frame 41 reaches a predetermined reflection position, the segment 41 c is arranged in the concave gap portion of one detection portion 43 a of the frame position detection member 43. As a result, a predetermined instruction signal for stopping the actuator 42 is generated. In response to this, a control circuit (not shown) of the electronic camera 1 performs control to stop the rotational drive of the actuator 42.
[0116]
In this manner, the prism holding frame 41 is disposed at a predetermined reflection position at which the light beam transmitted through the lens group of the objective optical system 21a can be guided to the side of the image pickup device mounted on the image pickup substrate 28. The retractable lens frame 21 is disposed at a predetermined use position that protrudes forward from the exterior member 11 of the electronic camera 1. And this electronic camera 1 will be in a predetermined use condition.
[0117]
Next, when the user performs a predetermined operation of the power supply operation member 18 while the electronic camera 1 is in a use state, a control circuit (not shown) in the electronic camera 1 opens the power supply state ( A predetermined control for switching from the on state to the closed (off) state is executed.
[0118]
That is, a control circuit (not shown) of the electronic camera 1 receives a signal from a predetermined power switch member linked to the power operation member 18 and moves the retractable lens frame 21 from the use position to the storage position. Execute control.
[0119]
Upon receiving an instruction signal from the power switch member, the control circuit first drives and controls the actuator 32 to move the zoom lens frame 22 and the correction lens frame 23 to a predetermined initial position. This is an operation performed in a general retractable electronic camera or the like. In addition to this, in the present embodiment, the prism holding frame 41 is moved to a predetermined retracted position. In this case, the movement to the retracted position is a movement of the variable power lens frame 22 and the correction lens frame 23 which are the lens frames in which the prism holding frame 41 holds the second lens group in the direction toward the side.
[0120]
Therefore, in some cases, the prism holding frame 41 that moves to the retracted position may interfere with the zoom lens frame 22 and the correction lens frame 23.
[0121]
Therefore, prior to the retracting operation of the prism holding frame 41, the zoom lens frame 22 and the correction lens frame 23 are set at predetermined initial positions, that is, the retracting prism holding frame 41 does not interfere with the zoom lens frame 22 and the correction lens frame 23. By moving to the position, a retreat area of the prism holding frame 41 is secured, and the prism holding frame 41 is prevented from interfering with the zoom lens frame 22 and the correction lens frame 23.
[0122]
Next, the control circuit drives and controls the actuator 42 to start rotational driving in a predetermined direction. As a result, the prism holding frame 41 starts moving in a direction along the optical axis O2 from a predetermined reflection position toward the imaging surface of the imaging element (not shown) (in the direction of arrow Y2 in FIG. 6). .
[0123]
As the prism holding frame 41 moves in the direction of the arrow Y2 in FIG. 6, the engagement pin 41f provided on the prism holding frame 41 moves along the guide slit 44b. As a result, the retractable lens frame 21 moves toward the inside of the electronic camera 1 in the direction of the arrow X2 in FIG. 6 along the optical axis O1 against the urging force of the elastic member 36.
[0124]
Therefore, in conjunction with the movement of the prism holding frame 41 in the direction of the optical axis O2 and in the direction of the arrow Y2 in FIG. 6, the retractable lens frame 21 is in the direction along the optical axis O1 and in the direction of the arrow X2 in FIG. Move in the direction.
[0125]
When the prism holding frame 41 reaches a predetermined retracted position, the segment 41 c is disposed in the concave gap portion of the other detection portion 43 b of the frame position detection member 43. As a result, a predetermined instruction signal for stopping the actuator 42 is generated. In response to this, a control circuit (not shown) of the electronic camera 1 performs control to stop the rotational drive of the actuator 42.
[0126]
In this way, the prism holding frame 41 is disposed at the retracted position where the storage space for the retractable lens frame 21 can be secured, and at the same time, the retractable lens frame 21 faces the interior of the exterior member 11 of the electronic camera 1. Placed in the retracted storage position. And this electronic camera 1 will be in a predetermined non-use state.
[0127]
As described above, according to the first embodiment, in the electronic camera 1 having the lens unit 2 including the bending optical system using the prism 40 as the reflecting means,
By configuring the prism holding frame 41 (prism 40) to be movable in the direction along the optical axis O2 between the reflection position and the retracted position, a part of the first lens group (objective optical system) of the photographing optical system The lens frame (collapsed lens frame 21) that holds 21a) can be configured to be movable in the direction along the optical axis O1 between the use position and the storage position. Therefore, it is possible to easily make the electronic camera 1 thinner.
[0128]
The movement of the prism holding frame 41 in the direction along the optical axis O2 is caused by the movement of the other second lens group (variable magnification lens group 22a, correction system lens group 23a, fixed lens group 24a) of the other part of the photographing optical system. The driving shaft 26 and the guide shaft 27 that guide the movement are used for guidance. Therefore, this contributes to the reduction of the number of parts, and can contribute to the simplification of the mechanism and the reduction of the manufacturing cost.
[0129]
An engaging member 44 that engages with a part of the prism holding frame 41 (the engaging pin 41f is a non-engaging member) is attached to the retractable lens frame 21, and the prism holding frame 41 is attached to the engaging member 44. In the case of moving to the retreat position, a part (engagement pin 41f) of the prism holding frame 41 is engaged. Thereby, when the prism holding frame 41 moves to the retracted position, the retractable lens frame 21 moves to the storage position. Therefore, the retractable lens frame 21 and the prism holding frame 41 can be interlocked by a simpler mechanism, which realizes simplification of the mechanism and contributes to a reduction in the number of parts, thereby contributing to a reduction in manufacturing cost. be able to.
[0130]
The actuator 42 for moving the prism 40 (prism holding frame 41) is fixed at a predetermined position of the prism holding frame 41 and close to the back side of the reflecting surface of the prism 40. Therefore, the space on the back surface side of the reflecting surface of the prism 40 can be used effectively for the member arrangement. This can also contribute to miniaturization of the electronic camera itself.
[0131]
In the first embodiment described above, the retractable lens frame 21 is housed in a state where the retractable lens frame 21 is completely housed in the exterior member 11. However, the present invention is not limited to this. A part of the front side of the frame 21 may slightly protrude from the front surface of the exterior member 11.
[0132]
In other words, the retracted lens frame 21 is stored in a retracted position compared to when the retractable lens frame 21 is in the use position, and the amount of protrusion of the retractable lens frame 21 from the front surface of the exterior member 11 is greater than that in the use position. It suffices if there is less state when in the storage position.
[0133]
In the above-described first embodiment, the prism 40 is used as a reflecting member that constitutes a part of the bending optical system. However, the reflecting member is not limited to this, and for example, a reflecting mirror is used. You can also
[0134]
The second embodiment of the present invention shown below is an example in which a reflecting mirror is used as a reflecting member that constitutes a part of a bending optical system. The second embodiment will be described below.
[0135]
FIG. 7 is an enlarged perspective view of a main part showing a part of the lens unit in the electronic camera according to the second embodiment of the present invention, and shows a case where the lens unit is not in use. FIG. 7 is a diagram corresponding to FIG. 6 in the first embodiment.
[0136]
As described above, the lens unit 2A in the electronic camera of the present embodiment uses the reflecting mirror 50 in place of the prism 40 that is the reflecting member used in the first embodiment. Different.
[0137]
The reflecting mirror 50 as a reflecting member in the present embodiment is held by a reflecting mirror holding frame 41A. The reflecting mirror holding frame 41A includes a base end portion 41Aa having support arm portions 41b and 41d that slidably support the reflecting mirror holding frame 41A itself in a manner similar to the prism holding frame 41 in the first embodiment described above. And a holding portion 41e that holds the reflecting mirror 50.
[0138]
The holding portion 41e is composed of a pair of opposing wall-like members, and the reflecting mirror 50 is disposed at a predetermined angle in a space sandwiched between the holding portions 41e. Then, when the reflecting mirror 50 is disposed at a predetermined position on the optical axis O1, that is, at the reflecting position, a surface orthogonal to the optical axis O1 and a surface on which a light beam transmitted through the objective optical system 21a is incident. The surface perpendicular to the optical axis O2 on the side from which the light beam reflected by the reflecting mirror 50 is emitted is open so that the light beam can pass therethrough.
[0139]
The reflecting surface of the reflecting mirror 50 held so as to be held between the holding portions 41e is relative to each of the optical axis O1 and the optical axis O2 when the reflecting mirror 50 is disposed at a predetermined reflecting position. Are arranged so as to have an inclination angle of approximately 45 degrees.
[0140]
One support arm portion 41b of the base end portion 41Aa is slidably supported by the drive shaft 26, and the other support arm portion 41d is slidably supported by the guide shaft 27 as in the first embodiment. . Accordingly, the reflecting mirror holding frame 41A is slidable only in the direction along the optical axis O2.
[0141]
In addition, at the distal end portion of one support arm portion 41b of the base end portion 41Aa, the cross section is substantially L-shaped, and the detection portions 43a and 43b of the frame position detection member 43 provided at corresponding positions on the base 25. It is the same as that of the prism holding frame 41 of the above-mentioned first embodiment that the section 41c that acts on is integrally formed.
Other configurations are the same as those in the first embodiment described above. The operation of the lens unit 2A in the electronic camera of this embodiment is also the same as that in the first embodiment.
[0142]
Therefore, according to the present embodiment, even if the reflecting mirror 50 is used as a reflecting member in a bending optical system that bends a light beam from a subject, the same effect as in the first embodiment can be obtained.
[0143]
Further, since the reflecting mirror 50 is used as a reflecting member having the same function in place of the prism that tends to be expensive as a component that requires machining accuracy, the manufacturing cost can be further reduced. it can.
[0144]
【The invention's effect】
As described above, according to the present invention, an electronic camera having a mechanism capable of realizing further thinning is provided in an electronic camera including a lens unit that employs a bending optical system using a reflecting means such as a prism. be able to.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an external appearance of a front side of an electronic camera according to a first embodiment of the present invention.
2 is a perspective view showing an external appearance of the back side of the electronic camera of FIG. 1;
3 is a perspective view schematically showing main internal components of the electronic camera of FIG. 1. FIG.
4 is a perspective view showing a lens unit taken out when the electronic camera of FIG. 1 is in use. FIG.
5 is an enlarged view of a part of the lens unit in the electronic camera of FIG. 1, mainly showing a reflecting member (prism) and its driving mechanism, and a portion in the vicinity of the members constituting the lens frame and its retracting driving mechanism. The principal part expansion disassembled perspective view.
6 is a main part enlarged perspective view showing a part of the lens unit when the electronic camera of FIG. 1 is not in use, and showing an enlarged state when the lens unit is assembled. FIG.
FIG. 7 is an enlarged perspective view of a main part showing an enlarged part of a lens unit when the electronic camera according to the second embodiment of the present invention is not in use.
[Explanation of symbols]
1 …… Electronic camera
2.2A …… Shooting lens unit
11 …… Exterior material
18 …… Power control member
21 …… Collapsed lens frame
21a: Objective optical system
21b: Support arm (prism holding frame)
21c: Support arm (prism holding frame)
21e …… Lens holding part
21f …… Engagement pin (connection part)
25a: Shaft support
25b: Shaft support
26 …… Drive shaft
27 …… Guide axis
28 …… Imaging board (imaging device)
28a …… Connector
28b: Flexible printed circuit board
32 …… Actuator
33 …… Guide spindle
36 …… Elastic member
40 …… Prism
40a …… Back side
41 ・ 41A …… Prism holding frame
42 …… Actuator
43 …… Frame position detection member
43a ・ 43b …… Detection part
44 ...... engagement member
44b …… Guide slit
45 …… Rack
50 …… Reflector

Claims (9)

A lens group that captures a light beam incident from the subject side along the first optical axis;
A lens frame that holds the lens group and is provided movably in a direction along the first optical axis between a use position protruding from the housing and a storage position retracting toward the inside of the housing;
A prism that bends the light beam transmitted through the lens group in a direction along a second optical axis that intersects the first optical axis;
An image sensor for receiving a light beam bent by the prism;
With
The prism includes a reflection position for guiding a light beam transmitted through the lens group and to the side of the image pickup device is movably configured between a retracted position to secure a housing space of the lens frame in the storage position, the An electronic camera, wherein the electronic camera is configured to retract toward a side along the second optical axis where the imaging element is disposed .   A second lens group which is provided on the second optical axis and forms an image on the light receiving surface of the image sensor on the light receiving surface of the imaging element;
  A guide shaft for guiding movement of the second lens group in a direction along the second optical axis;
  With
  The electronic camera according to claim 1, wherein the guide shaft is configured to guide the movement of the prism.   The lens frame is configured to move to a use position in accordance with the movement of the prism to a reflection position, and to move to a storage position in accordance with the movement of the prism to a retracted position. The electronic camera according to claim 1.   A prism frame for supporting the prism;
  The lens frame is provided with an engaging member that engages with a part of the prism frame,
  A part of the prism frame is engaged with the engaging member of the lens frame when the prism is moved to the retracted position, and the lens frame is moved to the storage position. The electronic camera according to claim 3.   An actuator for moving the prism;
  5. The electronic camera according to claim 4, wherein the actuator is fixed to the prism frame and disposed at a position close to a back surface side of a reflecting surface of the prism.   A power source operating means for performing a power source opening and closing operation;
The prism is configured to move to a reflection position in response to an opening operation by the power operation means and to move to a retreat position in response to a closing operation by the power operation means. The electronic camera according to any one of 1-5.   A lens group that captures a light beam incident from the subject side along the first optical axis;
  A lens frame that holds the lens group and is provided movably in a direction along the first optical axis between a use position protruding from the housing and a storage position retracting toward the inside of the housing;
  A prism that bends the light beam transmitted through the lens group in a direction along a second optical axis that intersects the first optical axis;
  A second lens group which is provided on the second optical axis and forms an image on the light receiving surface of the image sensor on the light receiving surface of the imaging element;
  An image sensor for receiving a light beam bent by the prism;
  With
  The prism includes a reflection position that guides the light beam transmitted through the lens group to the image sensor side. The lens frame is configured to be movable between a retracted position that secures a storage space for the lens frame in the storage position,
  2. The electronic camera according to claim 1, wherein the second lens group retreats to a position at which the prism does not interfere with the prism before the prism is moved to the retreat position.   8. The electronic camera according to claim 7, wherein the second lens group retreats to a position that does not interfere with the prism at the retreat position in response to a closing operation by the power operation means.   A lens group that captures a light beam incident from the subject side along the first optical axis;
  A lens frame that holds the lens group and is provided movably in a direction along the first optical axis between a use position protruding from the housing and a storage position retracting toward the inside of the housing;
  A reflecting mirror that bends the light beam transmitted through the lens group in a direction along a second optical axis that intersects the first optical axis;
  An image sensor for receiving a light beam bent by the reflecting mirror;
  With
  The reflecting mirror is configured to be movable between a reflection position for guiding the light beam transmitted through the lens group to the image sensor side and a retreat position for securing a storage space for the lens frame at the storage position. And
  Furthermore, the reflecting mirror is configured to be retracted toward a side along the second optical axis and where the imaging element is disposed.

Images