JP2015035735A - Camera device and filter unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a camera device for achieving an insertion and removal mechanism for turning on and off a polarization filter and a driving mechanism for adjusting a polarization angle with a common mechanism and to provide a filter unit.SOLUTION: A camera device 10A includes an imaging element 21 and a polarization filter 31 transmitting a light beam having a predetermined polarization component among light beams made incident on the imaging element 21. The polarization filter 31 is supported by a frame part 37 and a motor 33 moving the frame part 37 is provided. The motor 33 is rotated to move the frame part 37, so that the polarization filter 31 is inserted into and removed from an imaging area R of the imaging element 21 and the polarization filter 31 is rotated in an insertion position, to adjust a polarization angle. Thus, an insertion and removal mechanism for turning on and off the polarization filter 31 and a driving mechanism for adjusting the polarization angle can be achieved with the common mechanism.

Description

  The present invention relates to a camera device in which a polarizing filter can be turned on and off, and a filter unit used in the camera device.

2. Description of the Related Art Conventionally, a vehicle external vehicle monitoring device camera as a camera device is known in which a polarizing filter can be turned on and off (see, for example, Patent Document 1).
The camera device (external environment monitoring device camera) described in Patent Literature 1 is used to capture an external object in a vehicle such as an automobile and obtain external information by performing image recognition of the captured object.

As shown in FIG. 13, the camera device 100 includes a CCD camera 101. The CCD camera 101 is provided with a CCD 102 as an imaging device, and an objective lens system 103 as an imaging optical system that forms a subject image on the imaging surface of the CCD 102 is disposed in front of the CCD 102.
In front of the objective lens system 103, a polarizing filter 104 that transmits only a light beam having a predetermined polarization component and removes an unnecessary light beam is detachably provided in the optical path.
A conversion lens 105 as a focus switching lens for changing the focal length of the objective lens system 103 is detachably provided in the optical path of the objective lens system 103 (in the figure, behind the objective lens system 103).

As described above, by providing the polarizing filter 104 as necessary in the CCD camera 101, it is possible to prevent the ghost of the reflected image of the object in the vehicle interior reflected in the front window from entering the objective lens system 103 and the CCD 102. it can.
As shown in FIG. 14, the polarizing filter 104 is fixed to a filter frame 107 having a worm wheel 106 on the outer periphery, and is rotatably attached to the filter case 108 together with the filter frame 107. A rotation shaft 109 is provided at one end of the filter case 108 so that the entire filter case 108 rotates about the rotation shaft 109.

A pair of bevel gears 110a and 110b connected to driving means such as a motor (not shown) is provided near the end of the filter case 108, and a pinion 111 is provided at the other end of the bevel gear 110b. 111 meshes with the worm wheel 106 of the filter frame 107. Here, the rotating shaft of the bevel gear 110a is arranged so that the shaft coincides with the extension of the rotating shaft 109 of the filter case 108, and the rotating shaft of the bevel gear 110b is arranged perpendicular to this axis. .
By rotating the bevel gear 110a by such a rotation mechanism, the filter frame 107 is rotated via the bevel gear 110b, the pinion 111, and the worm wheel 106, and the polarizing filter 104 is independent of the rotational position of the filter case 108 itself. Can be positioned at a desired polarization angle, and the polarization component of the ghost can be effectively removed.

JP-A-9-266572 (FIGS. 4 and 6)

  However, in the conventional camera device, there is a problem that the insertion / removal mechanism for turning on / off the polarization filter 104 and the drive mechanism for adjusting the polarization angle are provided separately, which is not suitable for downsizing of the camera device. It was.

  SUMMARY OF THE INVENTION In order to solve the conventional problems, the present invention provides a camera device and a filter unit that implement a common mechanism for an insertion / removal mechanism for turning on / off a polarization filter and a drive mechanism for adjusting a polarization angle. is there.

  The camera device of the present invention includes an imaging device, a polarizing filter that transmits a light beam having a predetermined polarization component among light beams incident on the imaging device, a frame portion that supports the polarizing filter, and a motor that moves the frame portion. And rotating the motor to move the frame to insert and remove the polarizing filter from the imaging region of the image sensor, and to adjust the polarization angle at the insertion position of the polarizing filter. is there.

  In the camera device according to the aspect of the invention, the polarizing filter can rotate the polarization direction with respect to the frame portion by the motor.

  In the camera device of the present invention, the frame portion can be repeatedly moved between an insertion position to be inserted into the imaging area and a retracted position to be removed from the imaging area.

  In the camera device of the present invention, the first stopper that positions the frame portion at the retracted position, the second stopper that positions the frame portion at the insertion position, and the first gear mounted on the rotation shaft of the motor. A second gear that is mounted on a rotation center shaft parallel to the rotation shaft of the motor and meshes with the first gear, and a ring-shaped member that supports the polarizing filter and has a gear portion on the outer peripheral surface. A polarizing plate holder, a rotation support portion that rotatably supports the polarizing plate holder, a second gear and a third gear meshing with the gear portion, and the second gear; A friction material for transmitting a rotational force by a frictional force is provided between the frame portion.

  Furthermore, the filter unit of the present invention includes a polarizing filter that transmits a light beam having a predetermined polarization component among light beams incident on the image sensor, a frame portion that supports the polarizing filter, and a motor that moves the frame portion. And rotating the motor to move the frame and insert / remove the polarizing filter from / from the imaging region of the imaging device, and adjust the polarization angle at the insertion position of the polarizing filter.

  In the present invention, the polarizing filter is movable between a covering position that covers the imaging area of the imaging device and a retreat position that retracts from the imaging area. Further, the polarizing filter can rotate at the covering position so that the polarization direction can be changed steplessly by a motor. Thereby, the polarizing filter can be switched on and off, and rotates at the covering position, so that it is possible to provide a camera device and a filter unit having an effect that the polarization angle can be adjusted.

1 is a side view of a camera apparatus according to a first embodiment of the present invention. The disassembled perspective view which looked at the state which has a polarizing filter in a covering position in the filter unit of the camera device of a 1st embodiment concerning the present invention from the front. The disassembled perspective view which looked at the meshing | engagement state of the gear when the polarizing filter exists in a coating | coated position in the filter unit of the camera apparatus of 1st Embodiment which concerns on this invention from the front. The front view which shows the state which has a polarizing filter in a coating | coated position in the filter unit of the camera apparatus of 1st Embodiment which concerns on this invention. 4 is a cross-sectional view at the position VV in FIG. The top view which shows the state which has a polarizing filter in a retracted position in the filter unit of the camera apparatus of 1st Embodiment which concerns on this invention. Overall schematic diagram of surveillance camera system The side view of the camera apparatus of 2nd Embodiment which concerns on this invention Side view of camera apparatus according to third embodiment of the present invention. Side view of a camera device according to a fourth embodiment of the present invention. The side view which shows the lens and filter unit in the state which images the lower part with the camera apparatus of 5th Embodiment which concerns on this invention The side view which shows the lens and filter unit in the state which images the front with the camera apparatus of 5th Embodiment which concerns on this invention Schematic configuration diagram of a conventional camera device The top view which shows the structural example of the rotation mechanism of the polarizing filter in the conventional camera apparatus

(First embodiment)
Hereinafter, a camera device and a filter unit according to a first embodiment of the present invention will be described with reference to the drawings.
As shown in FIG. 1, the camera device 10 </ b> A of the first embodiment can be used as a surveillance camera that can shoot an imaging target by suspending it from a ceiling surface 11 with a suspension member 12, for example.
In the following description, the ceiling surface 11 side is “upper” and the opposite side to the ceiling surface 11 is “lower”. In the camera device 10A, the photographing target side is “front” and the opposite side is “rear”.

The camera device 10 </ b> A includes a camera body 20 having, for example, a rectangular box shape that is suspended by a suspension member 12. An image sensor 21 is accommodated in the camera body 20.
A cylindrical lens portion 22 is attached to the front side of the camera body 20. The lens unit 22 accommodates a lens group 23 in which a lens 231 that transmits light to the image sensor 21 is built in a cylindrical body.
A front housing 60 is provided in front of the lens portion 22 attached to the front of the camera body 20, and a filter unit case 50 that houses the filter unit 30 is disposed in the front housing 60.

As shown in FIGS. 2 and 3, the filter unit 30 is accommodated in a filter unit case 50, and the filter unit case 50 is attached to the lens unit 22.
The filter unit case 50 has a box shape having a front plate (not shown) and a rear plate 51, and the front plate and the rear plate 51 are provided with an opening 52 corresponding to the imaging region of the imaging device 21. .
Note that the imaging region refers to a region (area) of a light beam incident on the imaging element 212.
Further, the rear plate 51 is provided with a through hole 53 for a rotation drive shaft 331 of a motor 33 described later and a screw hole 54 for attaching a unit base 32 described later.

The filter unit 30 includes a polarizing filter (filter) 31. The polarizing filter 31 is movable between a covering position (see FIGS. 4 and 5) that covers the imaging area of the imaging device 21 and a retracted position (see FIG. 6) that is retracted from the imaging area.
The filter unit 30 has a unit base 32 that is attached to the front side of the image sensor 21 in the camera body 20. The unit base 32 is a substantially ring-shaped plate-like member as a whole, and has an opening 321 for passing light at the center. The opening 321 is positioned in front of the image sensor 21.

The unit base 32 has a circular portion 322 around the opening 321 and a protruding portion 323 that protrudes outward from the circular portion 322. A first stopper 324 is provided at the tip of the protruding portion 323 so as to protrude forward. Further, a second stopper 325 is provided in the vicinity of the boundary between the circular portion 322 and the protruding portion 323 so as to protrude forward.
A motor 33 is attached to the rear surface of the protruding portion 323. The rotation drive shaft 331 of the motor 33 is inserted into a through hole 326 provided in the protrusion 323 and protrudes forward of the unit base 32.

A motor gear (first gear) 34 is attached to the rotational drive shaft 331 of the motor 33 on the front side of the unit base 32.
In the vicinity of the through hole 326 on the front surface of the unit base 32, a rotation center shaft 35 parallel to the rotation drive shaft 331 of the motor 33 is provided so as to protrude forward.
A main gear (second gear) 36 is attached to the rotation center shaft 35. The main gear 36 has a two-stage structure of a large diameter portion 361 and a small diameter portion 362, and the large diameter portion 361 is always meshed with the motor gear 34.

A rotation base (frame portion) 37 is attached to the front side of the unit base 32. The rotation base 37 has an opening 371 for passing light at the center. The rotation base 37 is a substantially ring-shaped plate-like member as a whole, and has a circumferential portion 372 around the opening 371 and a protruding portion 373 that protrudes outward from the circumferential portion 372.
The protruding portion 373 is provided with a rotation center hole 374, and the rotation center hole 374 is attached to the tip of the rotation center shaft 35.
That is, the rotation base 37 comes into contact with the front surface of the main gear 36 attached to the rotation center shaft 35 via the friction material 38.

Therefore, when the motor 33 rotates, the main gear 36 is rotationally driven via the motor gear 34. When the main gear 36 rotates, the rotation base 37 rotates in the rotation direction of the main gear 36 due to the frictional force of the friction material 38.
At this time, when rotating between the first stopper 324 and the second stopper 325 provided on the unit base 32 and coming into contact with the first stopper 324 or the second stopper 325, the rotation of the rotation base 37 stops.

That is, when the rotation base 37 contacts the first stopper 324, the rotation base 37 is positioned at the retracted position (the state shown in FIG. 6). Further, when the rotation base 37 contacts the second stopper 325, the rotation base 37 is positioned at the covering position (the state shown in FIG. 4).
Thereafter, even if the main gear 36 further rotates due to the rotation of the motor 33, the friction material 38 slips and the rotation base 37 does not rotate any more.

  Around the opening 371 on the rear surface of the rotation base 37, three roller shafts 39 are provided at equal intervals in the circumferential direction. The roller shaft 39 is fixed by a fixing member 391 that passes through the rotation base 37 from the front. A roller gear (rotation support portion) 41 is rotatably attached to the roller shaft 39.

The polarizing filter 31 is supported by the polarizing plate holder 42. The polarizing plate holder 42 is a ring-shaped member and has a filter opening 421 to which the polarizing filter 31 is attached. On the outer peripheral surface of the polarizing plate holder 42, a gear portion 422 is provided on the entire periphery. The gear part 422 meshes with the roller gear 41.
Accordingly, the polarizing plate holder 42 is rotatably supported by the three roller gears 41 at a position corresponding to the opening 371 of the rotation base 37.

An intermediate gear (third gear) 43 is rotatably attached to the rear surface of the protruding portion 373 of the rotation base 37. The intermediate gear 43 is attached to the rotary base 37 via an intermediate gear retainer plate 44 having an overall “<” shape.
That is, the intermediate gear 43 is rotatably supported at the center of the front surface of the intermediate gear presser plate 44, and both ends of the intermediate gear presser plate 44 are fixed to the rear surface of the rotary base 37 by the fixing tools 45.
The intermediate gear 43 always meshes with the small diameter portion 362 of the main gear 36 and the gear portion 422 of the polarizing plate holder 42.
As a result, during the rotational movement of the rotary base 37, the intermediate gear 43 keeps meshing with the small diameter part 362 of the main gear 36 and the gear part 422 of the polarizing plate holder 42 and rotates together with the rotary base 37.

Next, an imaging operation by the camera device 10A will be described.
As shown in FIG. 1, the light BM reflected by the imaging target (not shown) enters the lens 231 of the lens group 23, forms an image on the imaging device 21 through the filter unit 30, and is converted into an electrical signal. . The electric signal is transmitted to a control device (not shown) and appropriately processed.
At this time, when the filter unit 30 is in the off state, as shown in FIG. 6, the polarizing filter 31 is not used because the rotation base 37 is in the retracted position.
On the other hand, when the filter unit 30 is in the ON state, as shown in FIGS. 4 and 5, the rotation base 37 is in the covering position, so that the light that has passed through the lens group 23 has a predetermined polarization component by the polarization filter 31. Only the light beam is transmitted, the unnecessary light beam is removed and an image is formed on the image sensor 21.

Next, the on / off switching operation of the filter unit 30 and the adjustment operation of the polarization angle will be described.
In the off state where the polarizing filter 31 is not used, the rotating base 37 is in contact with the first stopper 324 of the unit base 32 as shown in FIG.
In this state, the polarizing filter 31 of the rotation base 37 is in the retracted position retracted from the imaging area of the image sensor 21.

When turning the polarizing filter 31 by rotating the rotary base 37 from the retracted position to the covering position, the motor 33 is rotated. When the motor 33 is rotated, the motor gear 34 fixedly attached to the rotation drive shaft 331 rotates the main gear 36 rotatably attached to the rotation center shaft 35.
A rotation base 37 that is attached to the front surface of the main gear 36 so as to be rotatable about the rotation center shaft 35 is in contact via a friction material 38.
For this reason, when the main gear 36 rotates, the rotation base 37 rotates integrally with the frictional force of the friction material 38 (in the direction of arrow A in FIG. 6).
At the same time, since the main gear 36 meshes with the gear portion 422 of the polarizing plate holder 42, the polarizing filter 31 is rotated by rotating the polarizing plate holder 42. That is, when the rotation base 37 rotates, the polarizing filter 31 rotates.

The rotation base 37 rotates in the direction of arrow A in FIG. 6, contacts the second stopper 325 of the unit base 32, and stops rotating.
As a result, the rotation base 37 is positioned at a covering position (see FIGS. 4 and 5) that covers the imaging region of the imaging device 21, and the polarizing filter 31 is turned on.
Further, when the motor 33 is rotated, the rotation base 37 is prevented from rotating by the second stopper 325, so that the friction material 38 provided between the main gear 36 and the unit base 32 slips, and the unit base 32 is The main gear 36 continues to rotate without moving.
On the other hand, the main gear 36 rotates the gear portion 422 of the polarizing plate holder 42 and rotates the polarizing filter 31.
As a result, the polarizing filter 31 rotates and adjusts the polarization angle while the rotation base 37 is positioned and stopped at the covering position.

FIG. 7 is a schematic configuration of the entire surveillance camera system.
The surveillance camera system includes a camera device 10 </ b> A and a PC (controller) 71.
Inside the camera body 20, a signal processing unit 72, a control unit 73, and an I / F unit 74 are provided in addition to the image sensor 212 described above.
The signal processing unit 72 performs video signal processing such as γ correction and gain correction on the signal from the image sensor 212 and outputs the processed signal to the I / F unit 74. The I / F unit 74 is connected to an external PC (controller) 71 via a network, transmits a video signal from the signal processing unit 72, and transmits a control signal from the PC (controller) 71 to the control unit 73. To do.

  The control unit 73 receives a control signal from the PC (controller) 71 via the I / F unit 74, controls the motor 33 of the filter unit 30, and inserts / removes the polarizing filter 31 into / from the imaging region (ON, OFF) and adjustment of the polarization angle. Note that an operation unit may also be provided inside the camera body 20 and the motor 33 may be controlled by operating the operation unit. It is also possible to automatically control the motor 33 according to the pan and tilt positions of the camera body.

On the other hand, the PC (controller) 71 is provided with an operation unit 75, a control unit 76, an I / F unit 77, and a display unit 78.
The I / F unit 77 is connected to the I / F unit 74 of the camera body 20 via a network, receives a video signal from the camera body 20, and outputs it to the display unit 78. The display unit 78 outputs the video signal received via the I / F unit 77 to the screen. The operation unit 75 is for inputting a signal for remotely operating the polarization angle of the polarizing filter. The control unit 76 receives and analyzes a signal from the operation unit 75, and transmits a control signal for controlling the polarization filter 31 to the camera body 20 via the I / F unit 77.
The operation of the operation unit 75 can be performed not only on the polarization angle of the polarizing filter 31 but also on and off the polarizing filter.

Next, functions and effects of the camera device 10A will be described.
As illustrated in FIGS. 1 and 2, the camera device 10 </ b> A includes an image sensor 21 and a polarization filter 31 that transmits a light beam having a predetermined polarization component among light beams incident on the image sensor 21. The polarizing filter 31 is supported by a rotating base 37, and a motor 33 that moves the rotating base 37 is provided.
Then, by rotating the motor 33, the rotation base 37 is moved to insert and remove the polarizing filter 31 from the imaging region R of the imaging element 21, and the polarizing filter 31 rotates at the insertion position to adjust the polarization angle.
Thereby, the insertion / removal mechanism for turning on / off the polarization filter 31 and the drive mechanism for adjusting the polarization angle can be realized by a common mechanism.

In the camera device 10 </ b> A, the polarization direction of the polarization filter 31 can rotate with respect to the rotation base 37 by the motor 33.
Therefore, the change angle can be adjusted by rotating the polarizing filter 31 by the motor 33.

Further, in the camera device 10A, the rotation base 37 can repeatedly move between an insertion position where the polarizing filter 31 is inserted into the imaging region R and a retreat position where it is removed from the imaging region R.
Thereby, the polarizing filter 31 can be inserted into and removed from the imaging region R by the motor 33 moving the rotation base 37.

The unit base 32 on the camera body 20 side includes a first stopper 324 that positions the rotation base 37 at the retracted position and a second stopper 325 that positions the rotation base 37 at the covering position.
For this reason, the rotation base 37 can be easily positioned at the retracted position or the covering position.
When the motor 33 is rotated, the motor gear 34 fixedly attached to the rotation drive shaft 331 of the motor 33 rotates, and the main gear 36 attached to the rotation center shaft 35 and meshed with the motor gear 34 is centered on the rotation center shaft 35. Rotate.

Since a friction material 38 that transmits a rotational force by a frictional force is provided between the main gear 36 and the rotation base 37, when the main gear 36 rotates, the frictional force is transmitted and the rotation base 37 rotates.
On the other hand, the main gear 36 rotates the intermediate gear 43 provided on the rotation base 37. The intermediate gear 43 meshes with a gear portion 422 provided on the outer peripheral surface of the polarizing plate holder 42. The polarizing plate holder 42 is a ring-shaped member that supports the polarizing filter 31, and is rotatably supported by a plurality of roller gears 41.

Therefore, when the motor 33 rotates, the rotation base 37 can be rotated about the rotation center shaft 35 and the polarizing filter 31 can be rotated. Further, after the rotation base 37 contacts the first stopper 324 or the second stopper 325, the motor 33 rotates only the polarizing filter 31.
For this reason, the single motor 33 can perform ON / OFF switching of the polarizing filter 31 and stepless adjustment of the polarization angle.

Next, the function and effect of the filter unit 30 will be described.
As illustrated in FIG. 2, the filter unit 30 includes a polarizing filter 31 that transmits a light beam having a predetermined polarization component among light beams incident on the image sensor 21. The polarizing filter 31 is supported by a rotating base 37, and a motor 33 that moves the rotating base 37 is provided.
Then, by rotating the motor 33, the rotation base 37 is moved to insert and remove the polarizing filter 31 from the imaging region R of the imaging element 21, and the polarizing filter 31 rotates at the insertion position to adjust the polarization angle.
Thereby, the insertion / removal mechanism for turning on / off the polarization filter 31 and the drive mechanism for adjusting the polarization angle can be realized by a common mechanism.

(Second Embodiment)
Next, the camera device and filter unit of the second embodiment will be described.
In addition, the same code | symbol is attached | subjected to the site | part which is common in camera device 10A and filter unit 30 of 1st Embodiment mentioned above, and the overlapping description is abbreviate | omitted.
As shown in FIG. 8, in the camera device 10 </ b> B of the second embodiment, the filter unit 30 is inside the camera body 20 and is disposed between the image sensor 21 and the lens unit 22.

  According to the camera device 10B and the filter unit 30 of the second embodiment configured as described above, the same operations and effects as those of the camera device 10A and the filter unit 30 of the first embodiment described above can be obtained.

(Third embodiment)
Next, the camera device and filter unit of the third embodiment will be described.
In addition, the same code | symbol is attached | subjected to the site | part which is common in the camera apparatus 10A and filter unit 30 of 1st Embodiment mentioned above, or the camera apparatus 10B and filter unit 30 of 2nd Embodiment, and the overlapping description is abbreviate | omitted. To do.
As shown in FIG. 9, in the camera device 10 </ b> C of the third embodiment, the filter unit 30 is disposed between the lens group 23 and the image sensor 21 inside the lens unit 22.

  According to the camera device 10C and the filter unit 30 of the third embodiment configured as described above, the same operations and effects as those of the camera device 10A and the filter unit 30 of the first embodiment described above can be obtained.

(Fourth embodiment)
Next, the camera device and filter unit of the fourth embodiment will be described.
Note that parts common to the camera device 10A and the filter unit 30 of the first embodiment described above or the camera device 10C and the filter unit 30 of the third embodiment are denoted by the same reference numerals, and redundant description is omitted. To do.
As shown in FIG. 10, in the camera device 10 </ b> D of the fourth embodiment, the connection unit 61 is provided between the camera body 20 and the lens unit 22, and the filter unit 30 is accommodated in the connection unit 61.

  According to the camera device 10D and the filter unit 30 of the fourth embodiment configured as described above, the same operations and effects as those of the camera device 10A and the filter unit 30 of the first embodiment described above can be obtained.

(Fifth embodiment)
Next, the camera device and filter unit of the fifth embodiment will be described.
The parts common to the camera device 10A and the filter unit 30 of the first embodiment and the camera device 10D and the filter unit 30 of the fourth embodiment described above are denoted by the same reference numerals, and redundant description is omitted. To do.

As shown in FIGS. 11 and 12, in the camera device 10E of the fifth embodiment, a filter unit 30E having a rotation center shaft 46 inclined with respect to the lens unit 22 is provided. Further, the rotation base 37 holding the polarizing filter 31 was attached to be inclined with respect to the rotation center axis 46. The front surface of the camera device 10E was covered with a translucent hemispherical cover 47.
Therefore, when the rotary base 37 is rotated around the rotation center axis 46 from the covering position in the state of imaging the lower part as shown in FIG. 11, the rotary base 37 moves to the inside of the hemispherical cover 47 (in FIG. 11). Displayed with a two-dot chain line).

Thereby, even when the camera body 20 and the lens unit 22 are covered with the hemispherical cover 47, the rotation base 37 can be rotated around the rotation center axis 46 without enlarging the hemispherical cover 47. it can.
In addition, as shown in FIG. 12, even in a state where an image is captured in front of the horizontal direction, when the imaging direction is changed by rotating the lens unit 22 and the camera body 20, the rotation base 37 is accommodated in the covering position and the retracted position.
Thereby, even when the imaging direction of the camera body 20 or the lens unit 22 is changed, the rotation base 37 can be rotated between the covering position and the retracted position.

  The camera device and filter unit of the present invention are not limited to the above-described embodiments, and appropriate modifications and improvements can be made.

  The present invention can be applied to a camera device capable of turning on and off a polarizing filter and a filter unit used in the camera device.

10A, 10B, 10C, 10D, 10E Camera device 21 Imaging element 30, 30E Filter unit 31 Polarizing filter 324 First stopper 325 Second stopper 33 Motor 331 Rotation drive shaft (rotation shaft)
34 Motor gear (first gear)
35 Center of rotation 36 Main gear (second gear)
37 Rotating base (frame part)
38 Friction material 41 Roller gear (rotation support)
42 Polarizing plate holder 422 Gear portion 43 Intermediate gear (third gear)
R Imaging area

Claims (5)

An image sensor;
A polarizing filter that transmits a light beam of a predetermined polarization component among light beams incident on the image sensor;
A frame that supports the polarizing filter;
A motor for moving the frame part,
A camera apparatus, wherein the frame is moved by rotating the motor, the polarization filter is inserted into and removed from an imaging region of the imaging device, and a polarization angle of the polarization filter is adjusted at an insertion position. . The camera device according to claim 1,
The polarizing filter is a camera device capable of rotating a polarization direction with respect to the frame portion by the motor. The camera device according to claim 1 or 2,
The frame device is a camera device capable of repeatedly moving an insertion position to be inserted into the imaging area and a retraction position to be removed from the imaging area. The camera device according to any one of claims 1 to 3,
A first stopper for positioning the frame portion at a retracted position;
A second stopper for positioning the frame portion at the insertion position;
A first gear mounted on the rotating shaft of the motor;
A second gear mounted on a rotation center shaft parallel to the rotation shaft of the motor and meshing with the first gear;
A polarizing plate holder that is a ring-shaped member that supports the polarizing filter and has a gear portion on the outer peripheral surface;
A rotation support unit rotatably supporting the polarizing plate holder;
And a third gear meshing with the second gear and the gear portion,
A camera device in which a friction material for transmitting a rotational force by a frictional force is provided between the second gear and the frame portion. A polarizing filter that transmits light of a predetermined polarization component out of light incident on the image sensor;
A frame that supports the polarizing filter;
A motor for moving the frame part,
A filter unit characterized in that the frame is moved by rotating the motor, the polarizing filter is inserted into and removed from the imaging region of the imaging device, and the polarization angle of the polarizing filter is adjusted at the insertion position. .

Images