JP2001097117A - Vehicle rear monitor - Google Patents
Vehicle rear monitorInfo
- Publication number
- JP2001097117A JP2001097117A JP27733699A JP27733699A JP2001097117A JP 2001097117 A JP2001097117 A JP 2001097117A JP 27733699 A JP27733699 A JP 27733699A JP 27733699 A JP27733699 A JP 27733699A JP 2001097117 A JP2001097117 A JP 2001097117A
- Authority
- JP
- Japan
- Prior art keywords
- infrared
- imaging device
- vehicle
- night
- monitoring device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Landscapes
- Closed-Circuit Television Systems (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、車両後退時に後方
の障害物等の存在を確認するための車両後方監視装置に
関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle rear monitoring device for confirming the presence of an obstacle behind the vehicle when the vehicle retreats.
【０００２】[0002]
【従来の技術】従来より、例えば、車両がバックする場
合など、車両後部上方に設置したテレビカメラにより、
車両の後方領域を撮影し、そのテレビカメラにより撮影
された画像を車内のテレビモニタに表示して、車両後方
に障害物等が存在しないかどうか確認する車両後方監視
装置が提案されている（類似技術として、特開平１０−
２５５０１９号公報参照）。2. Description of the Related Art Conventionally, a television camera installed above a rear portion of a vehicle, for example, when the vehicle is backing,
There has been proposed a vehicle rearward monitoring device that photographs an area behind a vehicle, displays an image photographed by the television camera on a television monitor in the vehicle, and checks whether an obstacle or the like exists behind the vehicle (similar to the above). As a technology,
255019).
【０００３】そして、この種の車両後方監視装置として
は、夜間における後方確認性を高めるために、可視光カ
メラの他に、赤外線カメラも搭載し、昼間は可視光カメ
ラにより後方領域を撮影し、夜間は赤外線カメラにより
後方領域を撮影するようにしている。また、赤外線カメ
ラを使用しない場合には、後方を照射する専用のライト
等を設置して夜間での視界確保をしている。[0003] Such a vehicle rear monitoring device is equipped with an infrared camera in addition to a visible light camera in order to enhance the rear visibility at night, and photographs the rear area by the visible light camera in the daytime. At night, the rear area is photographed by an infrared camera. In addition, when an infrared camera is not used, a dedicated light or the like for irradiating the rear is installed to secure a view at night.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、このよ
うな技術にあっては、可視光カメラと赤外線カメラの２
種類のカメラを搭載しなければならないため、それらの
カメラの出力バランスの調整や、カメラの切り換え制御
が複雑である。However, in such a technique, there are two types of cameras, a visible light camera and an infrared camera.
Since various types of cameras must be mounted, adjustment of the output balance of those cameras and control of camera switching are complicated.
【０００５】また、昼間と夜間において、テレビモニタ
に表示される画像の画質が異なるため、使用者は違和感
を感じる。[0005] Further, since the image quality of the image displayed on the television monitor is different between daytime and nighttime, the user feels a sense of discomfort.
【０００６】更に、可視光カメラで撮影する場合、可視
光領域での明るさの変化を、ＡＬＣ回路、ＡＧＣ回路等
で処理しているが、処理能力にも限界があり、入力過多
による飽和現象や、急激な明るさの変化により、ハレー
ションが生じていた。Further, when photographing with a visible light camera, the change in brightness in the visible light region is processed by an ALC circuit, an AGC circuit, or the like. Halation was caused by sudden changes in brightness.
【０００７】この発明は、このような従来の技術に着目
してなされたものであり、テレビカメラが１つで済み、
昼夜問わず同じ画質の画像が得られ、急激な明るさの変
化の影響を受けない車両後方監視装置を提供するもので
ある。The present invention has been made by focusing on such a conventional technique, and requires only one television camera.
An object of the present invention is to provide a vehicle rear monitoring device that can obtain an image of the same image quality regardless of day and night and is not affected by a sudden change in brightness.
【０００８】[0008]
【課題を解決するための手段】請求項１記載の発明は、
車両の後方領域を撮影する撮像装置と、撮像装置で撮影
する後方領域に赤外線を照射する赤外線照射器と、撮像
装置で撮影された画像を表示するテレビモニタとを備え
た車両後方監視装置であって、前記撮像装置の固体撮像
素子の前側に、可視光をカットして赤外線を透過する赤
外線透過フィルターを設置し、赤外線による画像のみを
表示する。According to the first aspect of the present invention,
The vehicle rear monitoring device includes an imaging device that captures an image of a rear region of the vehicle, an infrared irradiator that irradiates infrared light to the rear region captured by the imaging device, and a television monitor that displays an image captured by the imaging device. In addition, an infrared transmission filter that cuts visible light and transmits infrared light is installed on the front side of the solid-state imaging device of the imaging device, and only an infrared image is displayed.
【０００９】請求項１記載の発明によれば、昼間も夜間
も、赤外線照射器で照射した後方領域を撮像装置で撮影
しているため、昼夜問わず同じ画質の画像が得られる。
可視光は赤外線透過フィルターでカットされるため、急
激な明るさの変化が生じても影響がない。テレビカメラ
としては、１つの撮像装置を用いるだけなので、面倒な
出力バランスの調整や、切り換え制御が不要になる。
尚、赤外線照射器から赤外線を照射しても、赤外線は人
間の目には見えないため、人の目が眩惑されたりするこ
とはない。According to the first aspect of the present invention, the image of the rear area illuminated by the infrared irradiator is photographed by the imaging device both in the daytime and at night, so that the same image quality can be obtained regardless of day and night.
Since visible light is cut by the infrared transmission filter, there is no effect even if a sudden change in brightness occurs. Since only one imaging device is used as a television camera, troublesome adjustment of output balance and switching control are not required.
Even if infrared rays are emitted from the infrared irradiator, the infrared rays are not visible to human eyes, so that human eyes are not dazzled.
【００１０】請求項２記載の発明は、赤外線透過フィル
ターが、固体撮像素子とレンズとの間、或いは、レンズ
の直前位置に設置されている。[0010] According to a second aspect of the present invention, the infrared transmission filter is provided between the solid-state imaging device and the lens or immediately before the lens.
【００１１】請求項２記載の発明によれば、赤外線透過
フィルターが、固体撮像素子とレンズとの間、或いは、
レンズの直前位置に設置されているため、撮像装置に入
り込もうとする全ての光は、赤外線透過フィルターを通
ることになる。従って、赤外線以外の可視光が撮像装置
で撮影されることはなく、赤外線による映像だけを撮影
してテレビモニタに出力できる。According to the second aspect of the present invention, the infrared transmission filter is provided between the solid-state imaging device and the lens, or
Since the light is located immediately before the lens, all light going into the imaging device passes through the infrared transmission filter. Therefore, the visible light other than the infrared light is not photographed by the imaging device, and only the image by the infrared light can be photographed and output to the television monitor.
【００１２】請求項３記載の発明は、赤外線照射器が、
複数の赤外線ＬＥＤを後方領域を確保できるように設置
した構造である。According to a third aspect of the present invention, the infrared irradiator comprises:
This is a structure in which a plurality of infrared LEDs are installed so as to secure a rear area.
【００１３】請求項３記載の発明によれば、赤外線照射
器が複数の赤外線ＬＥＤを後方領域を確保できるように
設置した構造であるため、この赤外線照射器により、撮
像装置で必要視認範囲を確実に照射することができる。According to the third aspect of the present invention, since the infrared irradiator has a structure in which a plurality of infrared LEDs are provided so as to secure a rear area, the infrared irradiator ensures a necessary visual recognition range in the imaging device. Can be irradiated.
【００１４】[0014]
【発明の実施の形態】以下、この発明の好適な実施形態
を図１〜図４に基づいて説明する。１は、「車両」とし
ての大型トラックで、その荷台の後部上方には、大型ト
ラック１の後方領域Ｒを撮影するための「撮像装置」と
してのＣＣＤカメラ２が斜め下向き状態で設置されてい
る。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of the present invention will be described below with reference to FIGS. Reference numeral 1 denotes a large truck as a “vehicle”, and a CCD camera 2 as an “imaging device” for photographing a rear region R of the large truck 1 is installed obliquely downward above the rear part of the loading platform. .
【００１５】このＣＣＤカメラ２は、図３に示すよう
に、前面から、レンズ３、赤外線透過フィルター４、固
体撮像素子（ＣＣＤ）５、駆動回路６を備えた構造であ
る。尚、赤外線透過フィルター４は、ＣＣＤカメラ２に
入り込もうとする光が必ず通る位置、すなわち固体撮像
素子５の「前側」にあれば良い。従って、赤外線透過フ
ィルター４の位置を、レンズ３の直前位置に変更しても
良い。As shown in FIG. 3, the CCD camera 2 has a lens 3, an infrared transmission filter 4, a solid-state imaging device (CCD) 5, and a drive circuit 6 from the front. Note that the infrared transmission filter 4 only needs to be located at a position where light that is going to enter the CCD camera 2 always passes, that is, at the “front side” of the solid-state imaging device 5. Therefore, the position of the infrared transmission filter 4 may be changed to a position immediately before the lens 3.
【００１６】このような赤外線透過フィルター４を設け
ているため、赤外線以外の可視光はカットされ、ＣＣＤ
カメラ２の固体撮像素子５では赤外線による映像だけが
撮影される。このＣＣＤカメラ２の映像信号は、大型ト
ラック１の運転席の前方のインストルメントパネル７に
配設されたテレビモニタ８に伝達され、そのテレビモニ
タ８に映像が表示される。Since such an infrared transmission filter 4 is provided, visible light other than infrared light is cut off,
The solid-state imaging device 5 of the camera 2 captures only an image by infrared rays. The video signal of the CCD camera 2 is transmitted to a television monitor 8 provided on an instrument panel 7 in front of the driver's seat of the large truck 1, and the video is displayed on the television monitor 8.
【００１７】また、ＣＣＤカメラ２の隣接位置には赤外
線照射器９が設置されている。この赤外線照射器９は図
４に示すように、複数の赤外線ＬＥＤ１０を後方領域を
確保できるように設置した構造で、車両の後方領域Ｒに
赤外線を照射できるようになっている。この赤外線照射
器９からの赤外線照射は、赤外線照射器９が作動してい
る間は、昼間及び夜間を問わず、常に行われている。そ
して、赤外線照射器９から照射される赤外線自体は、人
間の目には見えないため、大型トラック１の後方から後
向きに照射しても、人の目が眩惑されたりすることはな
い。An infrared irradiator 9 is installed adjacent to the CCD camera 2. As shown in FIG. 4, the infrared irradiator 9 has a structure in which a plurality of infrared LEDs 10 are installed so as to secure a rear region, and can irradiate a rear region R of the vehicle with infrared rays. The infrared irradiation from the infrared irradiator 9 is always performed during the day when the infrared irradiator 9 is operating, regardless of daytime or night. Since the infrared light itself emitted from the infrared irradiator 9 is invisible to human eyes, even if the infrared light is emitted backward from behind the large truck 1, the human eyes are not dazzled.
【００１８】以上のように、昼間も夜間も、赤外線照射
器９で照射した後方領域ＲをＣＣＤカメラ２で撮影して
いるため、昼夜問わず同じ画質の画像が得られる。そし
て、可視光を用いず、赤外線照射器９から照射した赤外
線だけを用いて後方領域Ｒを撮影するため、仮に、急激
な明るさの変化が生じてもハレーションを起こしたりす
ることはない。つまり、外部の明るさの変化の影響を受
けない。As described above, in the daytime and at night, the rear area R irradiated by the infrared irradiator 9 is photographed by the CCD camera 2, so that the same image quality can be obtained regardless of day and night. Then, since the rear region R is photographed using only the infrared light emitted from the infrared irradiator 9 without using visible light, halation does not occur even if a sudden change in brightness occurs. That is, it is not affected by changes in external brightness.
【００１９】また、テレビカメラとしては、１つのＣＣ
Ｄカメラ２を用いるだけなので、従来のように可視光用
と赤外線用の２つのテレビカメラを用いていた場合のよ
うな面倒な出力バランスの調整や、切り換え制御が不要
になる。As a television camera, one CC
Since only the D camera 2 is used, there is no need for complicated output balance adjustment and switching control as in the case where two television cameras for visible light and infrared light are used as in the related art.
【００２０】[0020]
【発明の効果】この発明に係る車両後方監視装置は、以
上説明したきたようなものなので、撮像装置が１つで済
み、昼夜問わず同じ画像が得られ、急激な明るさの変化
の影響を受けることがない。Since the vehicle rear monitoring apparatus according to the present invention is as described above, only one image pickup device is required, the same image can be obtained regardless of day and night, and the influence of a sudden change in brightness can be obtained. I will not receive it.
【図１】大型トラックの後部上方にＣＣＤカメラを設置
した例を示す側面図。FIG. 1 is a side view showing an example in which a CCD camera is installed above a rear part of a large truck.
【図２】大型トラックの後部上方にＣＣＤカメラを設置
した例を示す平面図。FIG. 2 is a plan view showing an example in which a CCD camera is installed above a rear part of a large truck.
【図３】ＣＣＤカメラの構造を示す概略断面図。FIG. 3 is a schematic sectional view showing the structure of a CCD camera.
【図４】赤外線照射器の赤外線ＬＥＤの面状配列を示す
図。FIG. 4 is a diagram showing a planar arrangement of infrared LEDs of an infrared irradiator.
１ 大型トラック（車両） ２ ＣＣＤカメラ（撮像装置） ３ レンズ ４ 赤外線透過フィルター ５ 固体撮像素子 ６ 駆動回路 ７ インストルメントパネル ８ テレビモニタ ９ 赤外線照射器 １０ 赤外線ＬＥＤ Ｒ 後方領域 Reference Signs List 1 large truck (vehicle) 2 CCD camera (imaging device) 3 lens 4 infrared transmission filter 5 solid-state imaging device 6 drive circuit 7 instrument panel 8 television monitor 9 infrared irradiator 10 infrared LED R rear area
Claims (3)
撮像装置で撮影する後方領域に赤外線を照射する赤外線
照射器と、撮像装置で撮影された画像を表示するテレビ
モニタとを備えた車両後方監視装置であって、 前記撮像装置の固体撮像素子の前側に、可視光をカット
して赤外線を透過する赤外線透過フィルターを設置し、
赤外線による画像のみを表示することを特徴とする車両
後方監視装置。An imaging device for photographing a rear area of a vehicle,
A vehicle rear monitoring device including an infrared irradiator that irradiates infrared rays to a rear region photographed by an imaging device, and a television monitor that displays an image photographed by the imaging device, wherein a front side of a solid-state imaging element of the imaging device In addition, an infrared transmission filter that cuts visible light and transmits infrared light is installed,
A vehicle rear monitoring device characterized by displaying only an infrared image.
て、 赤外線透過フィルターが、固体撮像素子とレンズとの
間、或いは、レンズの直前位置に設置されていることを
特徴とする車両後方監視装置。2. The vehicle rear monitoring device according to claim 1, wherein the infrared transmission filter is provided between the solid-state imaging device and the lens or at a position immediately before the lens. Monitoring device.
視装置であって、 赤外線照射器が、複数の赤外線ＬＥＤを後方領域を確保
できるように設置した構造であることを特徴とする車両
後方監視装置。3. The vehicle rear monitoring device according to claim 1, wherein the infrared irradiator has a structure in which a plurality of infrared LEDs are installed so as to secure a rear area. Rear monitoring device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27733699A JP2001097117A (en) | 1999-09-29 | 1999-09-29 | Vehicle rear monitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27733699A JP2001097117A (en) | 1999-09-29 | 1999-09-29 | Vehicle rear monitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2001097117A true JP2001097117A (en) | 2001-04-10 |
Family
ID=17582116
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27733699A Abandoned JP2001097117A (en) | 1999-09-29 | 1999-09-29 | Vehicle rear monitor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2001097117A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004136761A (en) * | 2002-10-17 | 2004-05-13 | Tokai Rika Co Ltd | Inner mirror |
| EP1466785A1 (en) * | 2003-04-09 | 2004-10-13 | Toyota Jidosha Kabushiki Kaisha | Side turn signal lamp, periphery monitoring device, body construction and imaging device for vehicle |
| JP2009044425A (en) * | 2007-08-08 | 2009-02-26 | Panasonic Corp | Imaging apparatus |
-
1999
- 1999-09-29 JP JP27733699A patent/JP2001097117A/en not_active Abandoned
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004136761A (en) * | 2002-10-17 | 2004-05-13 | Tokai Rika Co Ltd | Inner mirror |
| EP1466785A1 (en) * | 2003-04-09 | 2004-10-13 | Toyota Jidosha Kabushiki Kaisha | Side turn signal lamp, periphery monitoring device, body construction and imaging device for vehicle |
| US7301466B2 (en) | 2003-04-09 | 2007-11-27 | Toyota Jidosha Kabushiki Kaisha | Turn signal lamp, periphery monitoring device, body construction and imaging device for vehicle |
| JP2009044425A (en) * | 2007-08-08 | 2009-02-26 | Panasonic Corp | Imaging apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20050201 |
|
| A762 | Written abandonment of application |
Free format text: JAPANESE INTERMEDIATE CODE: A762 Effective date: 20070719 |