JP2008074139A - On-vehicle monitoring camera - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an inexpensive on-vehicle monitoring camera capable of taking images of front and rear wheels on sides of vehicle, which are dead angles of a driver, with one camera, and displaying images around the front and rear wheels on right and left sides of a screen of a display device. <P>SOLUTION: This on-vehicle monitoring camera comprises a rear mirror reflecting lights from a vicinity of a rear wheel of a vehicle, a front mirror reflecting lights from around a front wheel of the vehicle, and a CCD camera receiving lights reflected from the mirrors and taking the images. Then, the taken images are inverted to right and left in a right and left inverted mode and picked up from an image pick-up element. As a result, the lights from the front of the vehicle enter a right-half light-receiving face of the image pick-up element, and the lights from the back of the vehicle enter a left-half light-receiving face of the image pick-up element. In the display device, videos at the front of the vehicle are displayed on a right-half display screen, and videos at the back of the vehicle are displayed on a left-half display screen. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a vehicle-mounted monitoring camera, and more particularly to an optical system structure of a camera that monitors the periphery of a tire before and after a vehicle side that is a blind spot from a driver.

  Conventionally, an in-vehicle monitoring camera for monitoring the periphery of a tire on the front and rear sides of a vehicle side that is a blind spot from a driver is arranged as shown in FIG. 6 and has an optical system structure shown in FIG.

  FIG. 6 is a perspective view showing the vehicle. FIG. 7 is a perspective view of a side mirror provided in the vehicle. FIG. 7A is an explanatory diagram viewed from the front, and FIG. 7B is an explanatory diagram viewed from the rear.

  This vehicle includes front wheels 15 and rear wheels 16, respectively, and side mirrors 11 respectively on the left and right sides of the vehicle body in front of the driver's seat. This vehicle is a so-called right-hand drive vehicle. Therefore, when viewed from the driver's seat, the front wheel 15 and the rear wheel 16 on the left side of the vehicle body are blind spots, but usually the driver relies on experience and can.

  An unfamiliar driver may misjudgment of this blind spot when entering the garage or width-shifting, etc., and may cause derailment or contact. As a countermeasure, this blind spot, that is, the front wheel 15 on the left side of the vehicle body and the rear The periphery of the wheel 16 is picked up by an in-vehicle monitoring camera, and this image is displayed on, for example, a GPS (Global Positioning System) car navigation display device 50, and the periphery of the front wheel 15 and the rear wheel 16 is indirectly driven. Can be confirmed.

  More specifically, a CCD (Charge Coupled Device Image Sensor) camera 31 is disposed below the side mirror 11 that is disposed at the left side of the vehicle body when viewed from the driver's seat. The two visual fields around the front wheel 15 and the rear wheel 16 are synthesized by the prism 32 and imaged by one CCD camera 31, and this video signal is sent to the display device 50.

  In this example, the prism 32 captures light from the front and the rear of the vehicle, and the leading edge of the prism 32 is arranged in the left-right direction of the vehicle. Further, the image pickup device (not shown) of the CCD camera 31 is disposed below, that is, toward the light collecting surface of the prism 32, and the CCD camera 31 is disposed so that the image pickup surface of the image pickup device is directed forward of the vehicle. Has been.

  Accordingly, when the image from the CCD camera 31 is viewed directly on the display device 50 without being processed, the image near the front wheel 15 is displayed on the upper half screen of the display device 50 and the lower half screen of the display device 50 is displayed. Images of the vicinity of the rear wheel 16 are displayed, for example, as shown in FIG. However, since this image is displayed on the horizontally long display device 50 optimized for GPS car navigation, the vertical direction of the screen is short and the horizontal direction of the screen is long. However, the intended display image becomes smaller and the screen becomes very difficult to see. Furthermore, the image in front of the vehicle is displayed upside down, which makes the driver feel uncomfortable.

  For this reason, the image from the CCD camera 31 is sent to an image processing device (not shown), and only the necessary image range is cut out and rearranged, and converted into the screen configuration of FIG. 1).

  By the way, there exists the following structures as a vehicle-mounted surveillance camera which displays a vehicle front and a vehicle rear on the right and left of a display apparatus with respect to a horizontally long display apparatus, without using an image processing apparatus. In FIGS. 8A, 8B, and 8C, the image pickup device is provided inside the CCD camera 31, and the up, down, left, and right sides are when an upright image is received. FIG. 4 shows the top, bottom, left and right when viewed from the back of the image sensor. That is, when the image picked up by the image pickup device is displayed on the display device without being processed as it is, it indicates the directions of up, down, left and right respectively.

  8A to 8C are explanatory views of an optical system for explaining this principle, and FIGS. 8A to 8C are screens displayed on the display device at this time.

  In FIG. 8A, the arrows indicate the front-rear direction of the vehicle, and a mirror for capturing the light in the front-rear direction is disposed below the image sensor. Also. This mirror has a shape in which a rectangular mirror is bent to have a triangular side surface, and the reflecting surface is directed upward and the bent ridge is directed upward. Therefore, the reflecting surface is inclined in the front-rear direction of the vehicle.

  On the other hand, the right side of the image sensor is arranged in front of the vehicle, and the left side of the image sensor is arranged behind the vehicle, and the light from the front and rear direction of the vehicle indicated by the dotted arrows is taken as the left and right of the image sensor. It is supposed to be. The display image at this time is shown in FIG. The front-rear image of the vehicle is displayed on the left and right and sideways.

  In the structure of FIG. 8B, the image sensor of FIG. 8A is rotated 90 degrees, and the upper side of the image sensor is arranged in front of the vehicle and the lower side of the image sensor is arranged behind the vehicle. Is. In this case, the display image shown in FIG. The longitudinal direction of the vehicle is displayed at the top and bottom of the display screen. 8A and 8B are described using a mirror, the same display form is also obtained by the prism method described in FIG.

  The structure shown in FIG. 8C is a structure in which a vehicle-mounted monitoring camera, a so-called front camera, is installed at the front end of the vehicle to check the left and right of the traveling direction of the vehicle. In this structure, the image sensor is arranged toward the side of the vehicle and the left and right sides are arranged corresponding to the left and right of the vehicle, and the front-rear direction of the vehicle side is set to the left and right of the image sensor with a mirror arranged in front of the image sensor. It is a structure to be displayed.

  This mirror has a shape in which a rectangular mirror is bent to have a triangular upper surface, and is arranged so that the bent ridge faces the image sensor. Therefore, the reflecting surface of this mirror is inclined in the front-rear direction of the vehicle.

  The structure shown in FIG. 8C is an image that is easier to see than the structures shown in FIGS. 8A and 8B because the front and rear display images of the vehicle are upright images. . FIG. 8C 'shows an example of an image at this time. An image of the rear of the vehicle from the center of the screen toward the right of the screen, and an image of the front of the vehicle from the center of the screen to the left of the screen. , Respectively.

  However, as shown in FIG. 8A, when the left and right sides of the image sensor are arranged in the front-rear direction of the vehicle, the vehicle is displayed sideways in the display image, and it is difficult for the driver to drive because there is a sense of incongruity. there were.

  Further, as shown in FIG. 8B, when the upper and lower sides of the image sensor are arranged in the front-rear direction of the vehicle, the front-rear direction of the vehicle is divided and displayed on the display screen, and is originally intended for a display device with a short vertical direction. Further, there is a problem that the image to be displayed becomes smaller, and the image in front of the vehicle is displayed upside down, which is difficult for the driver to see.

  Further, as shown in FIG. 8C, when the image sensor is arranged toward the side of the vehicle, the vehicle is displayed in a form connected at the center of the screen. Accordingly, since the scenes before and after the vehicle are close to each other, there is a problem that it is difficult to intuitively determine whether the scenes on the left and right of the screen, that is, the scenes before and after the vehicle are left and right.

In order to solve such a problem, an expensive image processing device is provided on the display device side or on the surveillance camera side for the vehicle, and the right part and the left part of the screen are interchanged as in the display example of FIG. However, the image processing device is generally expensive, and there is a problem that the cost of the display device and the vehicle monitoring camera increases.
Japanese Patent Laying-Open No. 2003-175766 (page 4-5, FIG. 1)

  The present invention solves the above-described problems, images a front wheel and a rear wheel on the side of the vehicle that are blind spots to the driver with a single camera, and displays images of the surroundings of the front wheel and the rear wheel on the left and right sides of the display device. Another object of the present invention is to provide an in-vehicle surveillance camera that can display images that are displayed together and that does not feel uncomfortable for the driver at a low cost.

In order to solve the above-described problems, the present invention is installed on the side of a vehicle, and simultaneously images the front and rear of the vehicle on the same side with a single camera, and outputs the captured image as a video signal. In surveillance cameras,
An imaging device that receives incident light on a light receiving surface and converts it into an electrical signal, a front mirror that reflects light in front of the vehicle to the light receiving surface, and a rear mirror that reflects light in the rear of the vehicle to the light receiving surface The light receiving surface is disposed toward the outside of the vehicle,
The front mirror and the rear mirror are arranged offset in the front-rear direction in front of the light receiving surface, and the light reflected by the front mirror is on the right side when viewed from the front surface of the light receiving surface of the image sensor. It is assumed that the light reflected by the rear mirror is incident on the left side when viewed from the front surface of the light receiving surface of the image sensor.

  In addition, the left and right sides of the image captured by the image sensor are inverted and output as the video signal.

Alternatively, in a vehicle-mounted surveillance camera that is installed on the side of the vehicle, images the vehicle front and rear of the side at the same time with one camera, and outputs the captured image as a video signal.
An imaging device that receives incident light on a light receiving surface and converts it into an electrical signal, a front mirror that reflects light in front of the vehicle to the light receiving surface, and a rear mirror that reflects light in the rear of the vehicle to the light receiving surface The light receiving surface is disposed toward the inside of the vehicle,
The front mirror and the rear mirror are arranged offset in the front-rear direction in front of the light receiving surface, and the light reflected by the front mirror is on the left side when viewed from the front surface of the light receiving surface of the image sensor, It is assumed that the light reflected by the rear mirror is incident on the right side when viewed from the front surface of the light receiving surface of the image sensor.

  Further, the light receiving surface of the image sensor is configured to be arranged at a predetermined angle with respect to the front-rear direction of the vehicle.

  Further, the light receiving surface of the image pickup device is arranged at a predetermined depression angle.

  Furthermore, the light receiving surface of the image sensor is configured to be arranged at a predetermined rotation angle with respect to the horizontal to the left and right of the light receiving surface with a vertical virtual axis passing through the center point of the light receiving surface as the center.

By using the above means, according to the vehicle monitoring camera according to the present invention,
In the invention according to claim 1, the light reflected by the front mirror is on the right side when viewed from the front surface of the light receiving surface of the image sensor, and the light reflected by the rear mirror is on the left side when viewed from the front surface of the light receiving surface of the image sensor. In the invention according to claim 3, the light reflected by the front mirror is on the left side when viewed from the front surface of the light receiving surface of the image sensor, and the light reflected by the rear mirror is imaged. Because it is a structure that enters each on the right side as seen from the table of the light receiving surface of the element,
When viewing the camera image on the display device, the left and right images are upright, and the vehicle is displayed close to the left and right sides of the display device, and the vehicle is displayed near the center of the screen of the display device. Therefore, it is easy to visually recognize the left and right sides, that is, the front and rear direction of the vehicle.

  Since the invention according to claim 2 electrically inverts the left and right of the captured image, when the camera image is viewed on the display device, the vehicle is displayed close to the left and right sides of the display device, In addition, an image of the front of the vehicle is displayed on the right half of the screen of the display device, and an image of the rear of the vehicle is displayed on the left half of the screen.

  For this reason, the left and right images are upright, and the scene that the driver sees when looking right and left (equivalent to the front and rear of the vehicle) from the passenger's seat window of the right-hand drive vehicle The image is easy to recognize intuitively for the driver.

  In the invention according to claim 4, since the light receiving surface of the image sensor is disposed at a predetermined angle with respect to the longitudinal direction of the vehicle, the light receiving surface is not disposed at an intermediate point between the front wheel and the rear wheel. However, since the images near the front wheels and the rear wheels can be imaged so as to be displayed in a uniform area on the display screen, the images are easily intuitively recognized by the driver.

  In the invention according to claim 5, since the light receiving surface of the image sensor is arranged at a predetermined depression angle, it is possible to capture a wide range of the vehicle downward direction situation, so that the display image is easily recognized by the driver.

  In the invention according to claim 6, since the light receiving surface of the image sensor is arranged at a predetermined depression angle and is inclined at a predetermined rotation angle with respect to the left and right horizontal of the light receiving surface, the vehicle in the front-rear direction The side can be displayed as a vertical image, which makes it easy for the driver to recognize intuitively.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail as examples based on the attached drawings. In addition, the same number is attached | subjected about the structure demonstrated in background art, and detailed description is abbreviate | omitted.

  A feature of the present invention is that the light receiving surface of the image sensor is arranged so as to go from the vehicle side to the outside of the vehicle, or from the outside of the vehicle to the vehicle side, and to reflect light from the front of the vehicle to the image sensor, Provided with a mirror that reflects light from the rear of the vehicle to the image sensor, the front mirror and the rear mirror so that the light reflected by the front mirror and the rear mirror is incident on a predetermined surface on the left side or the right side of the light receiving surface. It is in having arranged. The predetermined surface refers to the side of the light receiving surface on which the rear side of the vehicle is displayed on the left display surface and the front side of the vehicle is displayed on the right display surface when viewing an image captured by the display device.

  FIG. 1 is a perspective view showing a side mirror on the passenger seat side of a right-hand drive vehicle equipped with a vehicle-mounted surveillance camera of the present invention. FIG. 1 (A) is from the front of the vehicle, and FIG. It is each explanatory drawing seen from back.

  The side mirror is provided with a storage portion 30 that is formed by bulging the lower portion of the side mirror 11 that is arranged at the left side of the vehicle body when viewed from the driver's seat, and the in-vehicle monitoring camera 1 is arranged therein. is doing. The in-vehicle monitoring camera 1 includes a CCD camera 31 having a built-in image sensor (not shown) and two mirrors (not shown).

  The image pickup device of the CCD camera 31 is arranged so as to go from the inside to the outside of the vehicle, and the two mirrors provided in front of the image pickup device are arranged around the front wheel 15 and the rear wheel 16 of the vehicle shown in FIG. Are reflected by the two visual fields, and the two reflected light beams are imaged by one CCD camera 31 and synthesized, and the synthesized video is sent to the display device as a video signal. Note that a window 30a and a window 30b are provided in the vehicle front-rear direction of the storage unit 30. Light in front of the vehicle enters from the window 30a, and light in the rear of the vehicle enters from the window 30b, and is reflected by an internal mirror. Each is reflected and incident on the CCD camera 31.

  2A and 2B are explanatory views for explaining the arrangement of the CCD camera 31 in a right-hand drive vehicle. FIG. 2A is a top view of the vehicle, and FIG. 2B is a side view as seen from the back of the vehicle. FIG. 2C is an explanatory diagram of a main part when the camera is viewed from the optical axis direction.

  The CCD camera 31 is arranged in a normal arrangement, that is, so as to be able to take an erect image, and a lens (light receiving portion) is provided in a side mirror (not shown) on the passenger seat side from the side of the vehicle toward the outside of the vehicle. Directed and arranged.

  Further, as shown in FIG. 2A, the CCD camera 31 uniformly images the front and rear wheels on the side of the vehicle, so that the light receiving surface of the image sensor on the side of the vehicle (the front-rear direction of the vehicle). It arrange | positions so that an angle may be set to (theta) 1. In a typical vehicle, a rear seat is disposed behind the driver seat, and a rear wheel is disposed behind the rear seat. Therefore, since the distance B from the center of the rear wheel to the optical axis of the CCD camera 31 is longer than the distance A from the center of the front wheel to the optical axis of the CCD camera 31 disposed on the side mirror, this is corrected. As described above, the angle θ1 is set to a predetermined value larger than 0 °. For this reason, when the periphery of the front wheels and the rear wheels is displayed on the display device, the display area can be displayed evenly and the screen can be easily viewed by the driver.

  If distance A = distance B, θ1 = 0 ° (parallel to the longitudinal direction of the vehicle), that is, the optical axis may be perpendicular to the longitudinal direction of the vehicle.

  Further, as shown in FIG. 2B, the CCD camera 31 captures a wide range of images of the front wheels, rear wheels, and surroundings on the side of the vehicle, so the optical axis of the lens with respect to a virtual line parallel to the ground is a depression angle θ2. Are arranged as follows. Note that θ2 = 0 ° (horizontal with respect to the ground) may be used as long as the side mirror mounting position is close to the ground and the surroundings of the front and rear wheels can be sufficiently imaged.

  Further, as shown in FIG. 2C, the CCD camera 31 is arranged so that the optical axis of the lens with respect to a virtual line parallel to the ground is the depression angle θ2, and the horizontal position of the camera, that is, not shown. Since the image sensor is arranged at a predetermined rotation angle θ3 with respect to the horizontal to the left and right of the light receiving surface of the image sensor, the vehicle side surface in the front-rear direction can be displayed as a vertical image, and the image is easy to recognize intuitively for the driver. Become.

  Note that the aforementioned θ1, θ2, and θ3 affect the displayed image when the respective angles are changed, so that the inclination of the image is the most natural image or related as appropriate. It is good to change it.

  Next, the optical system of the in-vehicle surveillance camera will be described with reference to the perspective view of FIG. 3A and the explanatory view of FIG. FIG. 3B is an explanatory diagram of a main part when the left side (passenger seat side) of the vehicle is viewed from above.

  This in-vehicle surveillance camera 1 includes a rear mirror 2 that reflects light from the vicinity of the rear wheel of a vehicle, a front mirror 3 that reflects light from the vicinity of the front wheel of the vehicle, and a rear mirror on a base 4 made of a flat plate. 2 and a CCD camera 31 that receives and captures the light reflected by the front mirror 3.

  The CCD camera 31 is provided with a CCD 31a which is an image pickup device having a horizontally long rectangular light receiving surface. Light reflected by the rear mirror 2 and the front mirror 3 is reflected by a lens unit 31b disposed on the front surface of the CCD 31a. These are collected and guided to the CCD 31a. The video signal output from the CCD camera 31 is output as it is as the light incident on the CCD 31a, that is, if it is an upright image light, it is converted into a signal so that it becomes an upright image. Is output.

  On the other hand, the rear mirror 2 and the front mirror 3 are independently arranged on the front surface of the lens unit 31 b of the CCD camera 31, and each reflecting surface is inclined with respect to the optical axis center line of the CCD camera 31. . Further, the rear mirror 2 and the front mirror 3 are arranged offset in the front-rear direction with respect to the optical axis of the CCD camera 31.

  Further, the front mirror 3 and the rear mirror 2 are arranged so that the light reflected by the rear mirror 2 intersects the light before being reflected by the front mirror 3. That is, the rear mirror 2 reflects light from the vicinity of the rear wheel of the vehicle reflected by the rear mirror 2 to the left half of the light receiving surface of the CCD 31a, and the front mirror 3 reflects from the vicinity of the front wheel of the vehicle reflected by the front mirror 3. Are arranged so as to irradiate the right half of the light receiving surface of the CCD 31a.

  FIG. 4A is an explanatory view showing the optical system of the in-vehicle monitoring camera according to the mounting position of the CCD camera described in FIGS. 2 and 3, and FIG. 4A 'is displayed on the display device at this time. It is an example of a screen. A solid arrow tip in FIG. 4A indicates the front-rear direction of the vehicle. In addition, dotted arrows indicate the respective light paths coming from the front-rear direction of the vehicle. Further, the image pickup device is provided inside the CCD camera 31, and the upper, lower, left, and right shown in the drawing are the upper, lower, left, and right, respectively, when viewed from the back of the image pickup device when receiving an erect image. Show. That is, when the image picked up by the image pickup device is displayed on the display device without being processed as it is, the directions are the up, down, left and right directions, respectively.

  In FIG. 4A, as described in detail with reference to FIG. 3, the light from the rear and front of the vehicle is reflected by dedicated mirrors and enters the light receiving surface of the image sensor. As a result, light from the front of the vehicle enters the right half light receiving surface of the image sensor, and light from the rear of the vehicle enters the left half light receiving surface of the image sensor. The image captured by the image sensor is output as a video signal after using the left / right reversal mode generally mounted on the camera, that is, the mode for electrically reversing the left / right, and this is output by the display device. It is supposed to be displayed.

  Therefore, as shown in FIG. 4 (A '), the display device (not shown) displays the front image of the vehicle on the right half of the display screen and the rear image of the vehicle on the left half of the display screen. Furthermore, the front and rear ends of the vehicle are projected from the left and right pieces on which the vehicle front image and the vehicle rear image are projected toward the center of the screen. A black band is displayed in the vertical direction at the center of the screen to indicate the separation position of the left and right screens.

  The black band may be electrically added to the captured image, or the black band may be printed in advance on the reflective surfaces corresponding to the black bands of the two mirrors.

  In the screen configuration as shown in FIG. 4 (A '), two images are upright, and the driver stands out from the passenger's seat window of the vehicle on the right steering wheel to the right and left (front and rear of the vehicle). It is the same as the scene that is seen when the image is confirmed, and is an image that is easy to recognize intuitively for the driver.

  FIG. 5A is an explanatory diagram showing an optical system of an in-vehicle monitoring camera in which the configuration described in FIG. 4 is applied, the CCD camera mounting direction is reversed, and the camera lens is directed from the outside of the vehicle to the inside of the vehicle. FIG. 5 (A ′) shows an example of a screen displayed on the display device at this time. The meanings of the items shown in the figure are the same as those in FIG.

  In FIG. 5A, light from the rear and front of the vehicle is reflected by dedicated mirrors and enters the light receiving surface of the image sensor. As a result, light from the front of the vehicle is incident on the left half light receiving surface of the image sensor, and light from the rear of the vehicle is incident on the right half light receiving surface of the image sensor. In this case, since it is not necessary to flip the captured image horizontally, it is displayed on the display device as it is.

  Accordingly, as shown in FIG. 5 (A '), an image of the front of the vehicle is displayed on the right half of the display screen and an image of the rear of the vehicle is displayed on the left half of the display screen. Furthermore, the front and rear ends of the vehicle are projected from the left and right pieces on which the vehicle front image and the vehicle rear image are projected toward the center of the screen. In the case of this structure, since the camera is disposed near the tip of the side mirror and each mirror is disposed on the side of the vehicle, the vehicle image displayed compared to the structure of FIG. It looks like the left and right are relatively shrunk. However, since it is not necessary to reverse the left and right of the captured image, a camera without the left / right reversal mode can be used.

  The only difference between FIG. 5 and FIG. 4 is the presence / absence of use of the left / right inversion mode and the width of the vehicle displayed on the display device. The vehicle or camera type that is actually used, may have been select whether to advance either display method, a vehicle monitoring camera corresponding to the selected be mounted on a vehicle.

  Although the present embodiment has been described using a right-hand drive vehicle, the present invention is not limited to this, and may be applied to a left-hand drive vehicle. In addition, although the camera for imaging is described as a CCD camera, a camera using a CMOS (charge coupled device) imaging device and other cameras may be used.

  Furthermore, although the in-vehicle surveillance camera according to the present invention is described as being built in the side mirror, the same effect can be obtained by arranging it on a pole protruding from the vehicle body or a portion protruding from the vehicle body instead. .

  In this embodiment, the front mirror and the rear mirror are arranged in order from the side closer to the light receiving surface of the image sensor, but the present invention is not limited to this, and the rear mirror is sequentially arranged from the side closer to the light receiving surface of the image sensor. A front mirror may be arranged.

It is a perspective view which shows the side mirror carrying the vehicle-mounted surveillance camera by this invention, (A) is the figure seen from the vehicle front side, (B) is seen from the vehicle rear side. It is explanatory drawing which described the direction of the camera in the vehicle carrying the vehicle-mounted surveillance camera by this invention, (A) is a top view of a vehicle, (B) is a rear side view of a vehicle, (C) is an optical axis. It is principal part explanatory drawing seen from the direction. It is explanatory drawing explaining the optical system of the vehicle-mounted monitoring camera by this invention, (A) is a perspective view of a vehicle-mounted monitoring camera, (B) is a principal part top view which shows the relationship between a vehicle-mounted monitoring camera and a vehicle. is there. It is explanatory drawing of the optical system and image | video of the vehicle-mounted surveillance camera by this invention, (A) has shown the optical system, (A ') has each shown the example of the screen displayed on a display apparatus. It is explanatory drawing explaining another Example of the optical system and image | video of the vehicle-mounted surveillance camera by this invention, (A) is an optical system, (A ') is an example of the screen displayed on a display apparatus, respectively. Show. It is a perspective view of the vehicle carrying the conventional vehicle-mounted surveillance camera. It is a perspective view which shows the side mirror which mounts the conventional vehicle-mounted surveillance camera, (A) is the figure seen from the vehicle front side, (B) is the vehicle rear side. It is explanatory drawing of the optical system and image | video of the conventional vehicle-mounted surveillance camera, (A) shows an optical system, (A ') has shown the example of the screen displayed on a display apparatus, respectively. Further, (B) and (B ′), (C) and (C ′) are explanatory diagrams of other optical systems and images. It is explanatory drawing which shows the example of a display which processed the image | video imaged with the conventional vehicle-mounted surveillance camera using the image processing apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 In-vehicle surveillance camera 2 Back mirror 3 Front mirror 4 Base 11 Side mirror 15 Front wheel 16 Rear wheel 30 Storage part 30a Window 30b Window 31 CCD camera 31a CCD
31b Lens unit

Claims (6)

In an in-vehicle monitoring camera that is installed on the side of a vehicle, images the vehicle front and rear of the side at the same time with one camera, and outputs the captured image as a video signal.
An imaging device that receives incident light on a light receiving surface and converts it into an electrical signal, a front mirror that reflects light in front of the vehicle to the light receiving surface, and a rear mirror that reflects light in the rear of the vehicle to the light receiving surface The light receiving surface is disposed toward the outside of the vehicle,
The front mirror and the rear mirror are disposed in front of the light receiving surface and offset in the front-rear direction, and the light reflected by the front mirror is reflected by the rear mirror to the right side of the light receiving surface of the image sensor. The vehicle-mounted surveillance camera is characterized in that the light is incident on the left side of the light receiving surface of the image sensor.   The in-vehicle surveillance camera according to claim 1, wherein the image captured by the image sensor is inverted and output as the video signal. In a vehicle-mounted surveillance camera that is installed on the side of a vehicle, simultaneously images the front and rear of the vehicle on the same side with one camera, and outputs the captured image as a video signal.
An imaging device that receives incident light on a light receiving surface and converts it into an electrical signal, a front mirror that reflects light in front of the vehicle to the light receiving surface, and a rear mirror that reflects light in the rear of the vehicle to the light receiving surface The light receiving surface is disposed toward the inside of the vehicle,
The front mirror and the rear mirror are arranged offset in the front-rear direction in front of the light receiving surface, and the light reflected by the front mirror is reflected by the rear mirror on the left side of the light receiving surface of the image sensor. A vehicle-mounted surveillance camera, wherein the light is incident on the right side of the light receiving surface of the image sensor.   The in-vehicle monitoring camera according to any one of claims 1 to 3, wherein a light receiving surface of the image sensor is arranged at a predetermined angle with respect to a front-rear direction of the vehicle.   The in-vehicle surveillance camera according to any one of claims 1 to 4, wherein a light receiving surface of the image sensor is arranged at a predetermined depression angle.   The light receiving surface of the image sensor is arranged at a predetermined rotation angle with respect to the horizontal on the left and right of the light receiving surface, with a vertical virtual axis passing through the center point of the light receiving surface as a center. 5. A vehicle-mounted surveillance camera according to 5.

Images