JP2006119298A - Imaging apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an imaging apparatus which can switch imaging conditions. <P>SOLUTION: Between an emission face 63 and an imaging element 22 of a prism optical system 21, an optical member 80 is arranged so as to be able to enter and leave. A driving mechanism 81 can move the optical member 80 between an insertion position facing the imaging element 22 and a retracting position facing no imaging element 22. An example of the optical member 80 is optical sheet glass with refractive index of ≥1. When the optical member 80 is inserted between the imaging element 22 and the emission face 63, a focal point of the prism optical system 21 is formed at a position suitable for 1st photographing condition. When the optical member 80 is retracted from between the imaging element 22 and the emission face 63, the focal point of the prism optical system 21 is moved to a position suitable for 2nd photographing condition. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an imaging apparatus that can be used for, for example, a digital camera, a camera-equipped mobile phone, and the like.

  An image pickup apparatus using a decentered optical system has been proposed as a small image pickup apparatus usable for a digital camera or a camera-equipped mobile phone. For example, the following Patent Documents 1 to 3 describe an imaging apparatus including an imaging optical system that uses a prism formed of a free-form surface or the like.

  The aim of the techniques described in Patent Documents 1 to 3 is to form an imaging optical system using a prism, and to use a free-form surface for the light incident surface, light exit surface, or reflecting surface of the prism. Thus, a compact and high-quality image can be obtained. In particular, in Patent Document 2 (Japanese Patent Laid-Open No. 2002-196243) and Patent Document 3 (Japanese Patent Laid-Open No. 2003-84200), two light prisms are combined, and the light incident surface of the first prism closer to the object, It is described that free curved surfaces are used for all seven surfaces in total, that is, the light incident surface, the two reflective surfaces, and the light exit surface of the second prism closer to the reflective surface, the light exit surface, and the imaging surface.

As a feature of such an optical system,
(1) Although the three reflecting surfaces use free-form curved surfaces having power, these reflecting surfaces can obtain a large power with respect to a refractive optical system such as a lens and are also affected by chromatic aberration. Absent.

(2) It can have seven optical surfaces in a compact space. Accordingly, the optical elements can be condensed and set in a limited space.
(3) Although it is desirable to increase the optical path length of the entire optical system to some extent in order to improve the optical performance, by using such a prism optical system, the optical path is bent, but the entire optical path length is long. The size of can be made compact.

  In the compact imaging apparatus described above, when performing macro photography with a distance from the imaging optical system to the subject of several centimeters to several tens of centimeters, it is desirable to switch the imaging optical system from the standard imaging position to the macro imaging position. . The standard imaging position referred to in this specification means a pan-focus imaging state that is in focus from close range to infinity. The macro imaging position means an imaging state suitable for shooting in a very close range where the distance to the subject is further shorter than the close range.

In a coaxial optical system imaging device, for example, like a camera-equipped mobile phone described in Patent Document 4 below, a coaxial optical system lens is placed in the optical axis direction in order to switch between a standard imaging position and a macro imaging position. A mechanism for movement is considered.
Japanese Patent Laid-Open No. 11-326766 JP 2002-196243 A JP 2003-84200 A JP 2002-107612 A

  However, in the compact imaging device described above, it is difficult to incorporate a mechanism for moving the optical system into a small imaging device. In addition, special consideration is required to accurately position the movable small optical system at a predetermined position with respect to the image sensor.

  For example, the macro photographing mechanism described in Patent Document 4 requires a precise driving mechanism and a control circuit for moving a plurality of lenses in the optical axis direction in order to enlarge and focus an image during macro photographing. In addition, the structure for moving the lens in the optical axis direction tends to increase the size of the imaging apparatus and increase the cost.

  Accordingly, an object of the present invention is to provide an imaging apparatus capable of switching an imaging state with a relatively simple configuration in a small optical system using a prism having a free-form curved reflecting surface.

  An imaging apparatus according to a first aspect of the present invention includes a prism optical system having an entrance surface, an exit surface, and a free-form reflecting surface, an image sensor disposed on the exit side of the prism optical system, and the image sensor An optical member that is disposed between the projection surface and the exit surface and is movable in a direction crossing the exit optical axis of the prism optical system, an insertion position that opposes the optical member to the image sensor, and a retreat that does not oppose the image sensor And a drive mechanism for moving the position.

  An imaging device according to a second aspect of the present invention includes a housing, and a prism that is housed in the housing and includes first and second prisms each having an entrance surface, an exit surface, and a free-form reflecting surface. An optical system, an image sensor disposed on the exit side of the second prism, and disposed between the image sensor and the exit surface of the second prism, crossing the exit optical axis of the second prism An optical member that is movable in a direction, and a drive mechanism that moves the optical member across an insertion position that faces the imaging element and a retracted position that does not face the imaging element.

  According to the present invention, an imaging state (for example, a standard imaging position and a macro imaging position) can be achieved by a relatively simple configuration in which an optical member such as a plate glass is inserted and removed between the exit surface of the prism optical system and the imaging element. Can be switched. Since the drive mechanism of the present invention only needs to move the optical member in the direction crossing the emission optical axis, the structure is simple and easy to control compared to the method of moving the prism optical system in the optical axis direction. Moreover, it can be made small.

A first embodiment of the present invention will be described below with reference to FIGS.
FIG. 1 shows a digital camera 1 as an example of an imaging device, and FIG. 2 shows its inside. As shown in FIG. 1, a release button 3, a flash 4, a finder optical system 5, an imaging optical system cover glass 6, and the like are provided in a housing 2 of the digital camera 1.

  As shown in FIG. 2, an imaging device 10, an image processing circuit 11, a recording unit 12, and the like are accommodated in the housing 2. The image processing circuit 11 obtains image data by performing predetermined electrical processing on the electrical signal obtained by the imaging device 10. The recording unit 12 records the image data from the image processing circuit 11 on a recording medium. An image monitor 13 is provided on the back surface of the housing 2.

  As illustrated in FIG. 3, the imaging device 10 includes a housing 20. A prism optical system 21 (shown in FIG. 4) constituting a decentered optical system is accommodated in the housing 20. FIG. 5 shows the inside of the imaging apparatus 10. The imaging device 10 includes an imaging element 22 such as a CCD disposed on the imaging surface of the prism optical system 21, a frame member (fixed frame) 24 to which a substrate 23 is fixed, and the like. The image sensor 22 is mounted at a predetermined position on the substrate 23. The cover glass 6 is attached to an opening (incident window) 25 on the incident side of the housing 20. A cover glass 26 that functions as an optical member such as a filter is attached to an opening on the exit side of the housing 20.

  As shown in FIG. 5, a part 20 a of the housing 20 is fitted to the frame member 24, and both are fixed to each other by a black adhesive 27 that has both light shielding properties and a dustproof function. A sealed dustproof space is constructed. The material of the housing 20 and the frame member 24 is a synthetic resin such as polycarbonate having good adhesion to the adhesive 27.

  The prism optical system 21 includes a first prism 31 and a second prism 32 that function as optical elements, and a diaphragm member 33. The throttle member 33 has a throttle part 36 in which a throttle hole 34 is formed, and an attachment part 37 fixed to the ceiling wall 20b (shown in FIG. 5) of the housing 20. The aperture hole 34 is circular and has a function of limiting the light beam passing through the prisms 31 and 32. The first prism 31 is fixed to one surface of the diaphragm member 33, and the second prism 32 is fixed to the other surface of the diaphragm member 33.

  The first prism 31 is an eccentric prism having an incident surface 50, a free-form reflecting surface 51 having a rotationally asymmetric and symmetric surface, and an exit surface 52. A coating layer 54 is formed on the reflective surface 51 by, for example, aluminum vapor deposition.

  The second prism 32 is an eccentric prism having an incident surface 60, two reflecting surfaces 61 and 62, and an exit surface 63. At least one of the two reflecting surfaces 61 and 62 is rotationally asymmetric and has a free-form surface shape having one symmetric surface. On these reflection surfaces 61 and 62, coating layers 65 and 66 are formed by, for example, aluminum vapor deposition.

  As shown in FIG. 5, the light beam incident on the first prism 31 from the incident side opening 25 along the incident optical axis λ 1 is reflected by the reflecting surface 51 of the first prism 31 and incident from the exit surface 52. The light enters the second prism 32 through the surface 60. Then, the light is reflected by the reflection surfaces 61 and 62, and is imaged by the image sensor 22 from the emission surface 63 through the cover glass 26 along the emission optical axis λ 2. The incident optical axis λ1 and the outgoing optical axis λ2 are substantially parallel.

  A convex portion (boss portion) 70 is formed on the attachment portion 37 of the aperture member 33. A hole 72 is formed in the ceiling wall 20 b of the housing 20. The convex portion 70 is inserted into the hole 72, and the attachment portion 37 of the throttle member 33 is fixed to the ceiling wall 20b of the housing 20 by fixing means such as an adhesive.

  As shown in FIG. 3, openings 75 are formed in both side walls 20 c of the housing 20. Both side surfaces of the first and second prisms 31 and 32 are fixed to the both side walls 20 c of the housing 20 by the adhesive 76 supplied to these openings 75.

  As shown in FIG. 5, an optical member 80 referred to in the present invention is disposed between the exit surface 63 of the second prism 32 and the image sensor 22 so as to be able to enter and exit. An example of the optical member 80 is an optically transparent flat optical glass. The optical member 80 may be made of a transparent synthetic resin. In short, the optical member 80 may be made of a transparent material having a refractive index larger than 1. The cover glass 26 is disposed between the optical member 80 and the image sensor 22.

  The optical member 80 can be reciprocated in a direction indicated by arrows M1 and M2 in FIG. That is, the optical member 80 moves in a direction crossing the emission optical axis λ2 of the prism optical system 21 (a direction perpendicular to the emission optical axis λ2). The drive mechanism 81 includes a moving body 85, a motor 86 that moves the moving body 85, a driving force transmission system 87, and the like. An optical member 80 is attached to the moving body 85. The moving body 85 is supported by the supports 90 and 91 provided on the frame member 24 so as to be movable in the directions of the arrows M1 and M2.

  As an example, the end portions 90 a and 91 a of the supports 90 and 91 are inserted into the long holes 92 and 93 (shown in FIG. 6) formed in the moving body 85, and the moving body is moved along the long holes 92 and 93. By allowing 85 to move in the linear direction, the moving body 85 can move in the directions of arrows M1 and M2 with a predetermined stroke.

  In this specification, as shown in FIGS. 5 and 6, a state where the optical member 80 is located between the imaging element 22 and the exit surface 63 is referred to as an insertion position. At this insertion position, the optical member 80 faces the image sensor 22, and the image sensor 22 is covered with the optical member 80. In addition, as indicated by a two-dot chain line X in FIG. 6, a state where the optical member 80 is retracted from between the imaging element 22 and the exit surface 63 is referred to as a retracted position. At this retracted position, the optical member 80 does not face the image sensor 22, so the image sensor 22 is not covered by the optical member 80.

  The drive mechanism 81 includes the moving body 85 and the motor 86 as an actuator that functions as a drive source. As shown in FIG. 5, the motor 86 is accommodated in a space S surrounded by the reflecting surface 51 of the first prism 31 and the inner wall of the housing 20. Since this space S is a dead space between the reflecting surface 51 inclined to the incident optical axis λ1 and the housing 20, the motor 86 can be accommodated by effectively using this space S. .

  A gear 95 is attached to the output shaft 86 a of the motor 86. The movable body 85 is provided with a rack portion 96 that meshes with the gear 95. When the gear 95 is rotated by the motor 86, the moving body 85 moves in the directions of arrows M1 and M2 across the aforementioned insertion position and retracted position.

  The optical member 80 and the drive mechanism 81 are disposed inside the projected area of the prism optical system 21 as viewed from the incident surface 50 side of the prism optical system 21. The projected area referred to here is a virtual region (two-dot chain line shown in FIG. 6) obtained by projecting the first and second prisms 31 and 32 and the diaphragm member 33 from the direction along the incident optical axis λ1 to the exit side. (Region surrounded by L1).

Hereinafter, the operation of the imaging apparatus 10 having the above configuration will be described.
The optical member 80 is moved to the insertion position or the retracted position by the drive mechanism 81 in accordance with the standard photographing or the macro photographing. When performing standard imaging, the optical member 80 is inserted into the insertion position (between the imaging device 22 and the exit surface 63). When performing macro photography, the optical member 80 is moved to a retracted position, that is, a position where the image sensor 22 is not covered.

  FIG. 7 schematically shows a part of the prism optical system 21, the image sensor 22 and the optical member 80. Here, it is assumed that the optical member 80 is made of flat glass having a refractive index n = 1.5. In the prism optical system 21, when the optical member 80 is inserted between the image pickup device 22 and the exit surface 63, the focal point f of the prism optical system 21 is the light receiving surface of the image pickup device 22 (position indicated by P1 in FIG. 7). The positional relationship between the emission surface 63 and the image sensor 22 is set so as to be formed as follows.

  When the optical member 80 is retracted from between the image pickup device 22 and the emission surface 63, the image pickup device 22 does not face the optical member 80. Therefore, light traveling from the emission surface 63 toward the image pickup device 22 passes only air. For this reason, the focal point f of the prism optical system 21 moves to a position closer to the exit surface 63 (position indicated by P2 in FIG. 7). The movement amount ΔL is obtained by ΔL = T · [1− (1 / n)] where the thickness of the optical member 80 is T and the refractive index is n. Accordingly, the moving distance (P2-P1) of the focal point f is about 0.1 mm when the thickness T of the optical member 80 is 0.3 mm and the refractive index n is 1.5.

  In the case of a general coaxial optical system, it is necessary to extend the lens to the object (object) side by several mm or more during macro photography. On the other hand, in the case of the prism optical system 21 using a free-form surface, it is possible to satisfy the optical conditions necessary for macro photography only by moving about 0.1 mm.

  For this reason, when the optical member 80 exists between the image sensor 22 and the exit surface 63, if the focal point f of the prism optical system 21 is aligned with the light receiving surface of the image sensor 22, the position is suitable for standard imaging. Optical conditions. Further, if the optical member 80 is retracted from between the imaging element 22 and the exit surface 63, the focal point f moves 0.1 mm toward the objective side, and the prism optical system 21 substantially moves toward the objective side. The optical conditions suitable for macro photography can be satisfied. The moving distance (P2-P1) of the focal point f can be selected to an optimum value according to the refractive index and the thickness T of the optical member 80.

  According to the imaging apparatus 10 of the present embodiment configured as described above, the optical member 80 is moved by the drive mechanism 81 in the laterally long direction of the prism optical system 21, that is, in the direction in which the first and second prisms 31 and 32 are arranged. Thus, the standard imaging position and the macro imaging position can be switched, and there is no need to move the prism optical system 21 in the direction of the emission optical axis λ2. Therefore, the configuration of the prism optical system 21 and the drive mechanism 81 can be simplified.

  In addition, since the optical member 80 and the drive mechanism 81 of the imaging apparatus 10 according to the present embodiment are within the projected area of the prism optical system 21 (the region indicated by the two-dot chain line L1 in FIG. 6), the drive mechanism 81 captures images. This is not a factor for increasing the size of the device 10. In other words, it can contribute to downsizing of the imaging device 10. Further, if a plate glass having a simple shape is used for the optical member 80, it is not necessary to use a special optical member, which can be implemented at a low cost.

  8 and 9 show a second embodiment of the present invention. In this embodiment, the linear actuator 100 is employed as the drive mechanism 81. The optical member 80 is moved by the linear actuator 100 in a direction crossing the emission optical axis λ2 of the prism optical system 21 (for example, a direction perpendicular to the emission optical axis λ2). Similar to the first embodiment, the optical member 80 and the drive mechanism 81 are arranged inside the projected area of the prism optical system 21 (region indicated by a two-dot chain line L1 in FIG. 9).

  The linear actuator 100 includes a stator portion 101 formed in a linear shape and a slide member 102 that can move in a linear direction along the stator portion 101. The stator portion 101 is formed with three types of electrodes (not shown). When positive, negative, and zero potentials are applied to these electrodes, induced charges (minus, positive, and zero) opposite to the potential of the stator portion 101 are applied to the resistors provided on the slide member 102.

  When the potential of the electrode of the stator unit 101 is switched in a state where such an induced charge is generated, the induced charge tends to stay in the original state. Attraction acts. As a result, the slide member 102 is attracted to the stator portion 101 after the slide member 102 has moved one pitch. By repeating this series of processes, the slide member 102 can be moved in the direction of the arrow M1 or M2 in FIG. Since other configurations are the same as those in the first embodiment, description thereof is omitted.

  In the second embodiment as well, optical conditions suitable for standard photography and macro photography can be obtained by switching the optical member 80 between the insertion position and the retracted position. Since the optical member 80 and the drive mechanism 81 can be accommodated within the projection area of the prism optical system 21, the imaging device 10 can be configured compactly. Further, since the optical member 80 is directly attached to the slide member 102 of the linear actuator 100, the driving force transmission system 87 of the first embodiment can be omitted, which can contribute to simplification and miniaturization of the driving mechanism 81.

  The drive mechanism 81 is not limited to the linear actuator 100 described above, and may be, for example, a linear ultrasonic motor or a linear movement type solenoid. In short, any linear actuator having a movable member that can move in the direction in which the first and second prisms 31 and 32 are arranged may be used.

  10 and 11 show a third embodiment of the present invention. The drive mechanism 81 of this embodiment has a pivotable arm 110. An optical member 80 is attached to the arm 110. The arm 110 is rotationally driven by a motor 111 in a first direction indicated by an arrow R1 in FIG. 11 and a second direction indicated by an arrow R2. That is, the optical member 80 also moves in a direction crossing the emission optical axis λ2 of the prism optical system 21 (for example, a direction perpendicular to the emission optical axis λ2). The motor 111 is controlled to rotate in the first or second direction by a control circuit (not shown).

  When the arm 110 rotates in the first direction, the optical member 80 is opposed to the imaging element 22, so that the imaging element 22 is covered by the optical member 80. When the arm 110 rotates in the second direction, the optical member 80 retreats to a position that does not cover the image sensor 22. The motor 111 is fixed to a motor mounting portion 112 formed outside the housing 20. Since other configurations are the same as those in the first embodiment, description thereof is omitted.

  According to the third embodiment configured as described above, a part of the arm 110 and the motor 111 can be arranged outside the housing 20, so that the drive mechanism 81 is not limited with respect to the size of the housing 20. Can be arranged. Further, since the rotational movement of the arm 110 attached to the output shaft of the motor 111 can be directly transmitted to the optical member 80, the configuration of the drive mechanism 81 is simplified.

  FIG. 12 shows a fourth embodiment of the present invention. This embodiment has a first arm 121 and a second arm 122. These arms 121 and 122 are attached to the output shaft of the motor 111 and can be rotated in the first direction R1 and the second direction R2. The same optical member 80 as that of the first embodiment is attached to the first arm 121. As another example of the optical member, for example, an optical filter 123 for dimming is attached to the second arm 122. Since the other configuration is the same as that of the third embodiment, the description thereof is omitted.

  When the arms 121 and 122 are rotated in the first direction R <b> 1 by the motor 111, the optical member 80 faces the image sensor 22 and covers the image sensor 22, so that the prism optical system 21 is similar to the first embodiment. A focal point is formed at the first position. If the optical member 80 is rotated by the motor 111 to the retracted position (position not covering the image sensor 22), the focal point of the prism optical system 21 is formed at the second position. If the optical filter 123 is opposed to the image sensor 22, the light emitted from the prism optical system 21 is reduced.

  According to the fourth embodiment, an optical functional component such as the optical filter 123 can be added in addition to the optical member 80. Since a plurality of types of optical functional components such as the optical member 80 and the optical filter 123 can be selectively used, the functions of the imaging device 10 can be further diversified.

  FIG. 13 shows an example in which the imaging apparatus of the present invention is incorporated in a camera-equipped mobile phone 130 as an example of imaging equipment. By incorporating the imaging device including the prism optical system 21 described in the above embodiments into the camera-equipped mobile phone 130, the camera-equipped cellular phone 130 can be further reduced in size and thickness and improved in optical performance. .

  Needless to say, in implementing the present invention, the constituent elements of the invention including the prism optical system, the optical member, and the driving mechanism can be variously modified without departing from the gist of the present invention. The prism optical system is not limited to two, and may be composed of one or three or more prisms.

1 is a perspective view of a digital camera including an imaging device according to a first embodiment of the present invention. FIG. 2 is a cross-sectional view schematically showing the inside of the digital camera shown in FIG. 1. 1 is a perspective view of an imaging apparatus showing a first embodiment of the present invention. FIG. 4 is a cross-sectional view of a prism optical system of the imaging device shown in FIG. 3. Sectional drawing of the imaging device which follows F5-F5 line | wire in FIG. Sectional drawing of the imaging device in alignment with F6-F6 line in FIG. FIG. 4 is a cross-sectional view schematically showing a part of the imaging apparatus shown in FIG. 3. Sectional drawing of the imaging device which concerns on the 2nd Embodiment of this invention. Sectional drawing of the imaging device which follows F9-F9 line | wire in FIG. Sectional drawing of the imaging device which concerns on the 3rd Embodiment of this invention. FIG. 11 is a cross-sectional view of the imaging device along the line F11-F11 in FIG. Sectional drawing of the imaging device which concerns on the 4th Embodiment of this invention. The perspective view which shows an example of the mobile phone with a camera.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Imaging device 20 ... Housing 21 ... Prism optical system 22 ... Imaging element 31 ... 1st prism 32 ... 2nd prism 80 ... Optical member 81 ... Drive mechanism 86 ... Motor 100 ... Linear actuator

Claims (13)

A prism optical system having an entrance surface, an exit surface, and a free-form reflecting surface;
An image sensor disposed on the exit side of the prism optical system;
An optical member disposed between the imaging element and the exit surface and movable in a direction crossing the exit optical axis of the prism optical system;
A drive mechanism for moving the optical member across an insertion position facing the image sensor and a retracted position not facing the image sensor;
An imaging apparatus comprising:   The imaging apparatus according to claim 1, wherein when the optical member is at the insertion position, a focal point of the prism optical system is formed at a first position with respect to the imaging element, and the optical member is at the retracted position. The imaging apparatus is characterized in that the focal point moves to a second position near the exit surface. A housing,
A prism optical system including first and second prisms, which are housed in the housing and each have an entrance surface, an exit surface, and a free-form reflecting surface;
An image sensor disposed on the exit side of the second prism;
An optical member disposed between the imaging element and the exit surface of the second prism and movable in a direction crossing the exit optical axis of the second prism;
A drive mechanism for moving the optical member across an insertion position facing the image sensor and a retracted position not facing the image sensor;
An imaging apparatus comprising:   The imaging apparatus according to claim 3, wherein when the optical member is at the insertion position, a focal point of the prism optical system is formed at a first position with respect to the imaging element, and the optical member is at the retracted position. The imaging device is characterized in that the focal point moves to a second position near the exit surface of the second prism.   5. The imaging device according to claim 2, wherein the first position is standard imaging for performing imaging corresponding to a case where the position of an object to be imaged is between a predetermined position and approximately infinity. The imaging apparatus according to claim 1, wherein the second position is a macro imaging position for performing imaging in response to a case where an object to be imaged is closer to the predetermined position. The imaging apparatus according to claim 3, wherein the driving mechanism is a movable member that is movable in a direction perpendicular to the emission optical axis;
An actuator for driving the moving member in the direction;
An imaging device comprising:   The imaging apparatus according to claim 6, wherein the moving member extends in a direction in which the first prism and the second prism are arranged, and the moving member moves in a direction perpendicular to the emission optical axis by the actuator. An imaging apparatus characterized by that.   8. The imaging apparatus according to claim 7, wherein the actuator is a motor, and the moving member moves through a driving force transmission mechanism having a gear rotated by the motor. The imaging apparatus according to claim 8, wherein the first prism has a reflecting surface inclined with respect to an incident optical axis of the prism,
An imaging apparatus, wherein the motor is accommodated in a space formed between the reflecting surface and an inner wall of the casing. The imaging apparatus according to claim 3, wherein the drive mechanism is a slide member that is movable in a direction perpendicular to the emission optical axis;
A stator portion for driving the slide member in the direction;
An imaging apparatus, characterized by being a linear actuator.   The imaging apparatus according to claim 3, wherein the optical member and the driving mechanism are arranged in a region of a projected area of the prism optical system as viewed from an incident surface side of the first prism. An imaging device. The imaging apparatus according to claim 3, wherein the drive mechanism is rotatably supported by the housing and has an arm attached with the optical member;
A motor arranged in the housing to rotate the arm between the insertion position and the retracted position;
An imaging device comprising: The imaging apparatus according to claim 3, wherein the drive mechanism is rotatably supported by the housing and has a first arm attached with the optical member;
A second arm to which an optical functional component other than the optical member is attached;
A motor disposed in the housing for rotating the first and second arms between the insertion position and the retracted position;
An imaging device comprising:

Images