JP2992028B1 - Cover of wide-angle lens and photographing device using the same - Google Patents

Abstract

An object of the present invention is to provide a cover that does not narrow the photographing range of a wide-angle lens and a photographing apparatus using the same. Kind Code: A1 A cover for housing and protecting a wide-angle lens therein, the cover having a transparent tubular portion and a plate portion closing one opening of the tubular portion. Further, it is a photographing device using the cover.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a photographing lens cover and a photographing apparatus using the same, and more particularly, to a photographing lens cover using the same.
The present invention relates to a cover of a wide-angle lens used for outdoor photographing and a photographing apparatus using the same. Note that the “wide-angle lens” in this specification means that the angle of view (shooting angle) is 1 regardless of the projection method or the like.
A photographing lens of 00 degrees or more is widely referred to. Therefore, the term “wide-angle lens” as used in this specification includes any of a so-called wide-angle lens, an ultra-wide-angle lens, and a fish-eye lens having an angle of view (photographing angle) of 100 degrees or more.

[0002]

2. Description of the Related Art A cover as shown in FIG. 5 is known as a cover for a photographing lens. That is, the cover 101
Is a substantially rectangular hollow box 10 made of metal or the like.
3 and a transparent window 105 made of glass or the like on one surface of the box 103. A photographing lens (not shown) is arranged inside the box 103, and an image of the outside of the cover 101 is photographed by the lens through the window 105.

On the other hand, a wide-angle lens has a large angle of view (photographing angle).
Since it is possible to photograph a wide range with one lens, attention is paid to various uses. For example, if the fish-eye lens having a field angle (shooting angle) of about 180 degrees or more is disposed on the ground surface so that the optical axis of the fish-eye lens is directed vertically upward, the ground surface around the fish-eye lens by one fish-eye lens You can shoot all of the above situations.

[0004]

However, when the wide-angle lens is disposed inside the cover 101 shown in FIG. 5, the wide-angle lens has a narrow photographing range and cannot take advantage of the wide-angle lens. There was a case. That is, since the wide-angle lens disposed inside the cover 101 can capture only the imaging range through the window 105, even if the wide-angle lens itself can capture a wide range, Due to the small size of the window 105, the wide-angle lens may only be able to capture an image in an imaging range narrowed by the window 105. In particular, when a fisheye lens (having an angle of view (shooting angle) of approximately 180 degrees or more) is disposed inside the cover 101 shown in FIG.
No matter how the fisheye lens is placed inside the camera 01, it was not possible to capture the entire wide imaging range inherent in the fisheye lens. As described above, when a cover is required, such as when photographing outdoors, the characteristics of the wide-angle lens cannot often be fully utilized. In particular, when a fisheye lens is used as a wide-angle lens, the characteristics of the fisheye lens cannot be fully utilized.

Accordingly, an object of the present invention is to provide a cover that does not narrow the photographing range of a wide-angle lens and a photographing apparatus using the same.

[0006]

The cover of the present invention (hereinafter referred to as "cover").
It is called "book cover." ) Is a cover for accommodating and protecting the wide-angle lens therein, which has a transparent tubular portion and a plate portion for closing one opening of the tubular portion. For this reason, if the wide-angle lens is arranged inside the cover such that the shooting direction of the wide-angle lens is directed to the plate portion of the main cover, the wide-angle lens can shoot the surroundings through the transparent cylindrical portion. This cover can accommodate and protect the wide-angle lens without reducing the shooting range of the wide-angle lens.

As described above, the “wide-angle lens” in this specification means that the angle of view (photographing angle) is 100 regardless of the projection method or the like.
The photographing lens having a degree or more is widely referred to (the angle of view (the photographing angle) is, of course, 360 degrees or less). Therefore, the term “wide-angle lens” as used in this specification includes any of a so-called wide-angle lens, an ultra-wide-angle lens, and a fish-eye lens having an angle of view (photographing angle) of 100 degrees or more. The term “fish-eye lens” as used in this specification broadly refers to a photographing lens having an angle of view (photographing angle) of 180 degrees or more regardless of a projection method or the like. In this specification, “front” refers to a direction in which a wide-angle lens captures an image, and “rear” refers to a direction opposite to a direction in which a wide-angle lens captures an image.

The present cover has a transparent cylinder. The term "transparent" as used herein means that it is enough that the wide-angle lens is transparent enough to capture a required image, and if it is within the range, it may be an attenuating light beam. It may be. The cylindrical portion may be used without any particular limitation as long as it is hollow, a triangular cylinder, a square cylinder, a pentagonal cylinder, a hexagonal cylinder, a polygonal cylinder such as a heptagonal cylinder and an octagonal cylinder, a cylinder,
Although an elliptic cylinder and the like can be exemplarily listed, a cylindrical shape is particularly preferable because a problem that a captured image is partially distorted can be avoided.

The present cover has a plate portion. The plate portion is for closing one opening of the cylindrical portion.
The cylindrical portion and the plate portion may be formed integrally, or may be formed separately from each other and then combined. The combination may be performed by any method as long as it is possible to prevent entry of an object that is not preferable to enter the interior of the cover from the combination portion (for example, rainwater or dust). Adhesion, fusion, welding, fitting, screwing with bolts and nuts and the like can be mentioned.

In order to prevent images in unnecessary directions from being taken, and to prevent or reduce the influence of strong light such as sunlight, a portion of the cover other than the portion is provided on the cover. Alternatively, an attenuation region for attenuating light may be formed. In particular, when strong light such as sunlight enters the wide-angle lens, the light-receiving portion of the camera device connected to the wide-angle lens may be damaged (deformation of the light-collecting microlens formed on the surface in pixel units, etc.). Partial loss of imaging capability occurs due to fading of the on-chip color filter, etc.). Also, if the aperture of the wide-angle lens is stopped down in accordance with the intense light in order to prevent such damage, it becomes impossible to photograph portions other than the intense light with sufficient brightness. Therefore, an attenuation region may be provided in a portion of the book cover corresponding to a direction in which an image is not desired to be captured or in a portion of the book cover corresponding to a direction in which intense light is incident, depending on the installation position and direction of the book cover. Note that the term "attenuation region" used herein suffices as long as it does not transmit light more than the other portions due to absorption or reflection, and includes a region that does not transmit light substantially at all.

In order to photograph the periphery of a point as a single image, a wide-angle lens may be disposed at the point so that the optical axis thereof is directed substantially vertically upward. If the fisheye lens has a corner (photographing angle), one fisheye lens can photograph all situations above the fisheye lens.) If a wide-angle lens is installed outdoors in this manner, the sky will be photographed in the center of the photographing range of the wide-angle lens, and sunlight will directly enter the wide-angle lens, causing the above-described problem. . In order to prevent this, the attenuation region may be formed on a part or all of the plate portion of the book cover so as to cover an empty portion at the time of photographing (a plate portion capable of attenuating sunlight). The damping region may be formed at the position of (2). Further, when the wide-angle lens is arranged so that the optical axis is directed substantially vertically upward, there is a case where the user does not want to photograph a part from a certain part downward (for example, a device related to the photographing may Etc. if you want to keep out). In such a case, the attenuation region may be formed near the other opening of the cylindrical portion. Further, at this time, if the attenuation region is formed on the entire circumference of the cylindrical portion, the outer edge of the photographing range can be defined by the attenuation region.

When the wide-angle lens is arranged so that the optical axis is directed substantially vertically upward, it is possible to prevent adhesion of the wide-angle lens to the cylinder to make the captured image unclear (for example, rainwater or dust), to the cylinder. Alternatively, an eave protruding outward in a cross section of the cover may be formed near the plate portion in order to reduce the size. The shape and mounting position of the eaves are
It may be appropriately determined according to the installation environment and the position of the cover.

Further, in the photographing apparatus of the present invention (hereinafter referred to as "the present apparatus"), the wide-angle lens is disposed inside the cylindrical portion of the book cover such that the photographing direction of the wide-angle lens is directed to the plate section of the book cover. A photographing device. In this way, the wide-angle lens can photograph the surroundings through the transparent cylindrical portion, so that it is possible to provide a photographing apparatus in which the photographing range of the wide-angle lens is not narrowed. Here, “the shooting direction of the wide-angle lens is directed to the plate portion of the book cover” means that an extension line extending in the direction of shooting the optical axis of the wide-angle lens passes through the plate portion of the book cover.
Further, “the wide-angle lens is disposed inside the cylindrical portion of the book cover” means that at least the wide-angle lens is located inside the cylindrical portion of the book cover inside the opening of the other cylindrical portion (the side where the plate portion is not attached). It is sufficient if a part is arranged, and it is sufficient if the wide-angle lens is at least in such a state when photographing.

In this device, the wide-angle lens may be moved back and forth. The plate portion of the book cover is located substantially at the center of the photographing range of the wide-angle lens, and the size of the photographed plate portion can be adjusted by moving the wide-angle lens. In the case where the attenuation region is formed in the plate portion in order to prevent the problem that the sunlight directly enters the wide-angle lens, by moving the wide-angle lens back and forth, the size of the attenuation region in the shooting range is reduced. Can be changed freely.

In this device, the book cover may be moved back and forth. By moving the cover back and forth, it is possible to freely change the size of the plate portion and the size of the attenuation region if the attenuation region is formed within the imaging range, similarly to moving the wide-angle lens back and forth. it can.

The apparatus has a housing having an opening, and the wide-angle lens moves back and forth to enter and exit the housing through the opening, and the cover moves from the housing through the opening. You may make it move back and forth so that it may go in and out. In this way, the wide-angle lens and / or the book cover can be stored inside the housing when not photographing, so that these components deteriorate from the surrounding environment (for example, deterioration due to rainwater, sunlight, dust, etc.).
Can be prevented.

The apparatus may further include a wiper which abuts against the outer surface of the cylindrical portion and moves relative to the cover to wipe the outer surface. In this way, if rainwater, dust, or the like adheres to the outer surface, the outer surface is wiped off by the wiper, so that the image captured by the wide-angle lens through the cylindrical portion can be kept clear. The relative movement may be performed in any manner. For example, the wiper is moved while the cover is fixed (the wiper is moved in the front-rear direction, or the wiper is moved in the circumferential direction of the cylindrical portion, etc.). ), Or the cover may be moved with the wiper fixed. In particular, as described above, if the main cover is moved back and forth, if the wiper is brought into contact with the outer surface of the cylindrical portion (without moving the wiper), the relative movement is caused by the front and rear movement. Movement is performed. Therefore, no special mechanism for moving the wiper or the like is required to achieve the relative movement, so that the structure of the present apparatus can be simplified.

[0018]

Embodiments of the present invention will be described below with reference to the drawings. However, the present invention is not limited by these.

FIG. 1 is a perspective view showing a book cover 11 according to one embodiment, and FIG. 2 is a sectional view taken along line XX of FIG. With reference to FIGS. 1 and 2, a book cover 11 according to an embodiment will be described. The main cover 11 has a cylindrical portion 21 and a plate portion 31. The cylindrical portion 21 has a cylindrical shape and is formed of colorless and transparent glass. Here, the cylindrical portion 21 is formed of glass, but may be formed of another material (for example, a resin material such as a polystyrene resin or an acrylic resin). In addition, since a fisheye lens (not shown here) is stored inside the cylindrical portion 21 as described later,
The cylindrical portion 21 is formed in a cylindrical shape having a size such that a necessary internal space can be obtained. The plate portion 31 has a disk shape, and is entirely formed of transparent glass colored black. That is, in the cover 11, the entire plate portion 31 is an attenuation region. The plate portion 31, which is an attenuation region, is a part of the cover 11, and attenuates light more than the remaining cylindrical portion 21. In this case, the attenuation region is formed by coloring the material forming the plate portion 31 itself. However, the attenuation region is formed by attaching a colored film to the plate portion 31, applying a paint to the plate portion 31, or the like. Is also good. Although the plate portion 31 is formed of glass here, other materials (for example, resin materials such as polystyrene resin and acrylic resin) are used.
May be formed. The plate portion 31 includes the cylindrical portion 21.
Are bonded to the cylindrical portion 21 so as to close one of the two openings 23a and 23b. In order to ensure the adhesion between the plate portion 31 and the tube portion 21 by adhesion,
The plate portion 31 is formed with a circumferential thick portion 25 such that the outer periphery of the cylindrical portion 21 is just fitted into the inner periphery thereof. The outer periphery of the cylindrical portion 21 is fitted to the inner periphery of the thick portion 25, and both are securely fixed in a liquid-tight and air-tight manner by an adhesive (not shown) interposed therebetween.

The cylindrical portion 2 near the other opening 23b of the cylindrical portion 21
1 A black film 4 on the inner peripheral surface that does not substantially transmit light
1 is stuck. The black film 41 is formed of a plastic adhesive film having an adhesive applied on one surface, and is adhered to the entire inner peripheral surface of the cylindrical portion 21 by the adhesive. An attenuation region is formed by the black film 41, and the attenuation region attenuates light more than the remaining portion (here, the portion 43 of the cylindrical portion 21 where the black film 41 is not attached). Since the black film 41 does not substantially transmit light, even when the outside of the cylinder 21 is photographed from a fisheye lens (not shown) disposed inside the cylinder 21, the outside of the black film 41 is not photographed.

The outer edge of the plate portion 31 is larger than the outer periphery of the cylindrical portion 21 and is located outside the plate portion 31 (the plate portion 3).
A portion of the disk-shaped disk 1 formed with a large disk diameter) forms an eave 51 projecting outward in the cross section of the cover 11 near the plate portion 31. Eaves 5
1 effectively prevents rainwater, dust, and the like that fall from above from adhering to the outer surface of the cylindrical portion 21 when an imaging device 61 described later is installed outdoors or the like. In addition, the cover 11 is configured such that an extension of the cylindrical central axis of the cylindrical portion 21 overlaps with the disk central axis of the plate portion 31.
The cross section is one of the surfaces including the central axis of the cylinder. Here, the cross-sectional shapes on other surfaces including the cylindrical central axis are the same as those in FIG.

FIG. 3 shows a photographing device 6 using the cover 11.
FIG. 1 is a sectional view showing one embodiment of the present invention. The imaging device 61
It has a housing 65 having an opening 63 at the top. The cylindrical portion 21 of the cover 11 is loosely fitted in the circular opening 63, and the cover 11 can freely move in and out (here, up and down) from the housing 65. On the entire circumference of the opening 63,
A wiper 67 whose front end contacts the outer surface of the cylindrical portion 21 of the cover 11 is attached. Flexible rubber wiper 6
Reference numeral 7 is fixed to the housing 65, and the cover 11 moves relative to the cover 11 (moves in and out of the housing 65 (in this case, up and down in this case)) to wipe the outer surface as described later.

Inside the cylindrical portion 21 of the cover 11, a fish-eye lens 69, which is a kind of wide-angle lens, (photographing angle: approximately 185 degrees)
Is arranged. An extension line 71 extending the optical axis of the fish-eye lens 69 in the shooting direction (the direction of arrow A in FIG. 3)
The fisheye lens 69 passes through the plate portion 31 of the cover 11, and the photographing direction A of the fisheye lens 69 faces the plate portion 31 of the cover 11. In the photographing device 61, the fisheye lens 69 is arranged such that the optical axis 71 of the fisheye lens 69 is directed substantially vertically upward. The image photographed by the fisheye lens 69 is converted into an electric signal by a conversion unit 70 (which constitutes a part of the fisheye lens 69) that converts an optical signal into an electric signal using a CCD or the like, and is output.

The cover 11 is driven back and forth by a cover drive motor 73. Here "before" is fisheye lens 6
9 is a shooting direction (the direction of arrow B in FIG.
The same direction as above, and “rear” means the opposite direction to the front (the direction of arrow C in FIG. 3). Here, a pinion (not shown) is attached to a rotation shaft (not shown) of the cover drive motor 73, and the rotation of the pinion (not shown) is converted into a forward-backward movement by a rack 75, and The cover 11 is moved back and forth via the attached cover attaching member 77 (one end of the cover attaching member 77 is attached to the rack 75, and the other end is attached to the cover 11). As a method of moving the cover 11, any method other than the combination of the rack and the pinion used here may be used, and examples thereof include a ball screw and a linear motor. Furthermore, the cover 11 may be manually moved to a desired position without using a motor or the like, and a stopper may be provided so that the cover 11 can be fixed at the position. As described above, the wiper 67 wipes the outer surface of the cylindrical portion 21 of the cover 11 by moving the cover 11 back and forth.

The fish-eye lens 69 has a lens drive motor 7
9 driven back and forth. Here, a pinion (not shown) is connected to a rotation shaft (not shown) of the lens drive motor 79.
The rack 81 converts the rotational motion of the pinion (not shown) into a forward-backward motion by the rack 81.
The fisheye lens 6 via the lens attachment member 83 attached to the
9 is moved back and forth (the lens mounting member 8).
3 has one end attached to the rack 81 and the other end attached to the fisheye lens 69). The method of moving the fisheye lens 69 is as follows.
Any thing other than the combination of the rack and the pinion used here may be used, and examples thereof include a ball screw and a linear motor. Further, the fisheye lens 69 may be manually moved to a desired position without using a motor or the like, and a stopper may be provided so that the fisheye lens 69 can be fixed at the position.

The photographing device 61 shown in FIG.
It can be operated from a place away from the location of the. That is, the photographing device 61 includes a remote operation unit 91 installed at a location away from the installation location, an arithmetic processing unit 93,
The operation is performed by a motor control unit 95, an image capturing unit 97, and a data transfer unit 99. The arithmetic processing unit 93 and the remote operation unit 91 are connected by the electric cable 90a.
Are connected, and the arithmetic processing unit 93 and the motor control unit 95 are connected by the electric cable 90b.
The image capturing unit 97 and the arithmetic processing unit 93 are connected by an electric cable 90c, the arithmetic processing unit 93 and the data transfer unit 99 are connected by an electric cable 90d, and the data transfer unit 9 is connected by an electric cable 90e.
9 and the remote control unit 91 are connected. The motor control unit 95 is connected to the cover drive motor 73 and the lens drive motor 79, and the image capture unit 97 is connected to the conversion unit 70. First, an operator (not shown)
The remote operation unit 91 instructs the front and rear movement of the cover 11, the front and rear movement of the fisheye lens 69, and the capture of an image. These command signals are transmitted to the arithmetic processing unit 93 via the electric cable 90a. The arithmetic processing unit 93 instructs the motor control unit 95 through the electric cable 90b when receiving a command signal related to the forward and backward movement of the cover 11 and the forward and backward movement of the fisheye lens 69, and when receiving the command signal related to image capture, the electric cable. An instruction is given to the image capturing unit 97 through 90c. The commanded motor control unit 95 operates the cover drive motor 7 according to the contents of the command.
3 or the lens drive motor 79 is driven to move the cover 11 or the fisheye lens 69 back and forth. The commanded image capturing section 97 converts the image signal converted into the electric signal into the conversion section 7.
0, and outputs it to the arithmetic processing unit 93 through the electric cable 90c. The arithmetic processing section 93 outputs the received image signal to the data transfer section 99 (after predetermined processing if necessary) through the electric cable 90d, and the data transfer section 99 sends the received image signal to the remote operation section 91. Output through the electric cable 90e. The image signal sent to the remote operation unit 91 is displayed or stored by an image display device (not shown) or an image storage device (not shown) built in or external to the remote operation unit 91. Used as

As shown in the photographing device 61 shown in FIG.
3 having a housing 65 with a fisheye lens 69
The fish-eye lens 69 shoots by moving back and forth so as to enter and exit the housing 65 through the opening 63 and moving the cover 11 back and forth through the housing 65 through the opening 63. In this case, the cover 11 and the fish-eye lens 69 are made to protrude from the housing 65 as shown in FIG. 3, and when the fish-eye lens 69 is not photographed, the cover 11 and the fish-eye lens 69 are moved backward (in the direction of arrow C in FIG. 3). (In this case, the plate portion 31 of the cover 11 is not housed and serves as a lid for the opening 63). Can be effectively protected.

By moving the fish-eye lens 69 and the cover 11 back and forth (arrows B and C in FIG. 3), the image range photographed by the fish-eye lens 69 can be freely adjusted. FIG. 4 is a schematic diagram illustrating a state of an image captured by the fish-eye lens 69. Referring to FIG.
A method of adjusting the image range by moving the fisheye lens 69 and the cover 11 back and forth will be described. Fisheye lens 6
The outer edge 203 of the image 201 captured by the camera 9 is circular. At the center of the image 201, a plate image 205 of the plate portion 31 of the cover 11 is formed. Since the plate portion 31 is formed of transparent glass colored black as described above and serves as an attenuation region, if the sun is at this position (the sun image is the plate image 20).
There is no problem with sunlight (if included in 5). Image 2
01, the size occupied by the plate image 205 changes depending on the distance between the fisheye lens 69 and the plate portion 31. Therefore, if the distance is reduced, the plate image 205 can be enlarged, and the distance can be increased. Plate image 2
05 can be reduced. Therefore, for example, in order to avoid the problem due to sunlight, the sun image is
The distance may be adjusted so as to be included in the range 05. Further, since the black film 41 adhered over the entire periphery of the lower portion (rear portion) of the inner peripheral surface of the cylindrical portion 21 does not substantially transmit light, no region corresponding to this portion is photographed (that is, the black film 41 is not photographed). 41 functions as a blindfold).
Since the black film 41 corresponds to the peripheral portion of the imaging range of the fisheye lens 69, a (black) peripheral restriction portion 207 in which nothing is captured is formed in the peripheral portion of the imaging. The size occupied by the peripheral restriction unit 207 in the image 201 is the size of the fisheye lens 6.
3 increases with the position of the black film 41 relatively upward (forward: arrow B) with respect to the fisheye lens 69 in FIG. Downward (rear:
It decreases as arrow C). Thus, for example, the fisheye lens 69 and the cover 1 can be adjusted so that the solar image is included in the perimeter limit 207 to avoid problems due to sunlight, and how well the upper image is taken.
What is necessary is just to adjust the positional relationship with 1. The fact that the fish-eye lens 69 and the cover 11 can be moved back and forth in this way means that a desired image can be easily obtained even when the projection system (for example, a stereoscopic projection system or an equidistant projection system) of the fish-eye lens used changes. It is also preferable from the viewpoint that it is possible to adapt to various fish-eye lenses, install the apparatus in various places, and capture various images.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a book cover according to an embodiment.

FIG. 2 is a sectional view taken along line XX of FIG.

FIG. 3 is a cross-sectional view showing the present apparatus of one embodiment.

FIG. 4 is a schematic diagram showing a state of an image photographed by a fisheye lens of the present apparatus.

FIG. 5 is a perspective view showing a conventional cover of a photographing lens.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 11 Cover 21 Cylindrical part 23a, 23b Opening 25 Thick part 31 Plate part 41 Black film 43 Portion on which no black film is adhered 51 Eave 61 Photographing device 63 Opening 65 Housing 67 Wiper 69 Fisheye lens 70 Conversion part 71 Optical axis Extension line) 73 Cover drive motor 75, 81 Rack 77 Cover mounting member 79 Lens drive motor 83 Lens mounting member 91 Remote operation unit 93 Operation processing unit 95 Motor control unit 97 Image capture unit 99 Data transfer unit 90a, 90b, 90c, 90d, 90e Electrical cable 101 Cover for photographing lens (conventional product) 103 Hollow box 105 Window 201 Image 203 Outer edge of image 205 Plate image 207 Peripheral restriction part

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-4-133042 (JP, A) JP-A 63-58225 (JP, U) JP-A 6-69952 (JP, U) JP-A 52-1983 48428 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) G03B 17/56 G03B 11/00-11/06 G03B 15/00 G03B 17/02-17/17 G02B 7/00 -7/16 G03B 19/00-19/16 G03B 37/00-37/06

Claims (13)

(57) [Claims] 1. A cover for accommodating and protecting a wide-angle lens therein, comprising: a transparent tube portion; and a plate portion closing one opening of the tube portion. 2. The cover according to claim 1, wherein said tubular portion is cylindrical. 3. The cover according to claim 1, wherein an attenuating region that attenuates light more than the rest is formed in a part of the cover. 4. The cover according to claim 3, wherein said damping region is formed on a part or all of said plate portion. 5. The cover according to claim 3, wherein the damping region is formed near the other opening of the cylindrical portion. 6. The cover according to claim 1, wherein an eave protruding outward in a cross section of the cover is formed near the plate portion. 7. The cover according to claim 1, wherein said wide-angle lens is a fisheye lens. 8. The wide-angle lens is disposed inside the cylindrical portion of the cover such that the photographing direction of the wide-angle lens is directed to the plate portion of the cover according to any one of claims 1 to 7. An imaging device. 9. The photographing apparatus according to claim 8, wherein said wide-angle lens moves back and forth. 10. The photographing apparatus according to claim 8, wherein the cover moves back and forth. 11. The photographing apparatus has a housing having an opening, the wide-angle lens moves back and forth so as to enter and exit the housing through the opening, and the cover passes through the opening. The photographing apparatus according to claim 8, wherein the photographing apparatus moves back and forth so as to enter and exit the housing. 12. The photographing apparatus according to claim 8, further comprising a wiper which abuts on an outer surface of said cylindrical portion and moves relative to said cover to wipe said outer surface. apparatus. 13. The photographing apparatus according to claim 12, wherein the relative movement is achieved by moving the cover with respect to the fixed wiper.