JPH06319067A - Image pickup device - Google Patents
Image pickup deviceInfo
- Publication number
- JPH06319067A JPH06319067A JP5107874A JP10787493A JPH06319067A JP H06319067 A JPH06319067 A JP H06319067A JP 5107874 A JP5107874 A JP 5107874A JP 10787493 A JP10787493 A JP 10787493A JP H06319067 A JPH06319067 A JP H06319067A
- Authority
- JP
- Japan
- Prior art keywords
- light
- optical transmission
- infrared
- external light
- transmission means
- 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.)
- Granted
Links
Landscapes
- Closed-Circuit Television Systems (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
- Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、例えば自動車、船
舶、飛行機、建物内など、外部光が当たる環境で撮影対
象を撮影する撮影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 photographing device for photographing an object to be photographed in an environment exposed to external light, such as an automobile, a ship, an airplane or a building.
【０００２】[0002]
【従来の技術】図５は従来の撮影装置の構成を示す説明
図であり、例えば特開昭６０−１５８３０３号公報に示
されている撮影装置を運転者の撮影に適用したものであ
る。図において、１はフロントガラス、２は天井、３は
撮影対象となる運転者、４はハンドル、５はインスツル
メントパネルの透明カバ−、６はインスツルメントパネ
ルの表面、７は太陽光や他車のヘッドライトによる外部
光、１０は近赤外光で、運転者を照射する赤外ＬＥＤ、
１１は可視光から近赤外光までの撮影が可能な赤外ＣＣ
Ｄカメラ、２０は赤外ＣＣＤカメラ１１の前に取り付け
られ、可視光を減衰し赤外光のみを通過させる可視光カ
ットフィルタである。なお、赤外ＬＥＤ１０と赤外ＣＣ
Ｄカメラ１１は運転者正面のインスツルメントパネル表
面６に配置され、ハンドル４の間の空間を通して運転者
３を照明し、撮影できるように構成されている。2. Description of the Related Art FIG. 5 is an explanatory view showing the structure of a conventional photographing apparatus, for example, the photographing apparatus disclosed in Japanese Patent Laid-Open No. 60-158303 is applied to photographing a driver. In the figure, 1 is a windshield, 2 is a ceiling, 3 is a driver to be photographed, 4 is a steering wheel, 5 is a transparent cover of an instrument panel, 6 is the surface of the instrument panel, 7 is sunlight or the like. External light from the headlights of other vehicles, 10 is near-infrared light, an infrared LED that illuminates the driver,
11 is an infrared CC capable of shooting from visible light to near infrared light
The D camera, 20 is a visible light cut filter which is attached in front of the infrared CCD camera 11 and attenuates visible light and passes only infrared light. The infrared LED 10 and the infrared CC
The D-camera 11 is arranged on the instrument panel surface 6 in front of the driver, and is configured to illuminate the driver 3 through the space between the steering wheels 4 and to take an image.
【０００３】次に、この装置の動作について説明する。
赤外ＬＥＤ１０は近赤外光を光路Ｌ１で運転者３の顔面
全体に照射する。赤外ＬＥＤ１０の照射による運転者３
の像は、光路Ｌ２を通り可視光カットフィルタ２０を通
るが、可視光カットフィルタ２０は近赤外光を減衰しな
いので、赤外ＣＣＤカメラ１１は運転者３の像を撮影す
ることができる。一方、外部光７は光路Ｌ３でフロント
ガラス１に入射し光路Ｌ４で運転者３に照射する。この
外部光による運転者３の像は同じく光路Ｌ２により可視
光カットフィルタ２０を通り、可視光成分が除かれるが
赤外成分は通過する。即ち、赤外ＣＣＤカメラ１１は外
部光７の赤外光と赤外ＬＥＤ１０の照射光による運転者
３の像を撮影する。Next, the operation of this device will be described.
The infrared LED 10 irradiates near infrared light to the entire face of the driver 3 along the optical path L1. Driver 3 by irradiation of infrared LED 10
Image passes through the optical path L2 and the visible light cut filter 20, but since the visible light cut filter 20 does not attenuate near infrared light, the infrared CCD camera 11 can capture the image of the driver 3. On the other hand, the external light 7 enters the windshield 1 through the optical path L3 and irradiates the driver 3 through the optical path L4. The image of the driver 3 due to this external light also passes through the visible light cut filter 20 by the optical path L2, and the visible light component is removed, but the infrared component passes. That is, the infrared CCD camera 11 captures an image of the driver 3 by the infrared light of the external light 7 and the irradiation light of the infrared LED 10.
【０００４】[0004]
【発明が解決しようとする課題】従来の撮影装置は以上
のように構成されているので、外部光７の当たる環境で
撮影対象３を撮影した時、外部光７に含まれる赤外光成
分が悪影響を及ぼす。即ち、外部光が当たることにより
撮影対象３の照度が変化したり、外部光７と撮影対象３
の間に位置する物体の陰により撮影対象３に明暗ができ
たりして、撮影対象３の映像が正しく撮影できない場合
があるという問題点があった。Since the conventional photographing apparatus is constructed as described above, when the photographing target 3 is photographed in the environment where the external light 7 strikes, the infrared light component contained in the external light 7 is Adversely affect. That is, the illuminance of the photographing target 3 is changed by being exposed to the external light, or the external light 7 and the photographing target 3 are changed.
There is a problem that the image of the photographing target 3 may not be photographed correctly because the photographing target 3 may be bright or dark due to the shadow of the object located between the two.
【０００５】この発明は、かかる問題点を解決するため
になされたもので、外部光を著しく減衰させ、外部光の
影響を防止できる撮影装置を得ることを目的とする。The present invention has been made to solve the above problems, and an object of the present invention is to obtain an image pickup apparatus capable of significantly reducing the external light and preventing the influence of the external light.
【０００６】[0006]
【課題を解決するための手段】請求項第１項の発明によ
る撮影装置は、撮影対象を照明する照明手段、撮影対象
を撮影する撮影手段、外部光が撮影対象に当たるのを遮
る位置に配置され、外部光のうちの少なくとも可視光の
一部を透過し、外部光の他部を遮蔽することにより、外
部光を減衰させる第１光学的透過手段、及び撮影対象と
撮影手段との間に配置され、照明手段によって照明され
た撮影対象からの反射光を透過させると共に、減衰した
外部光による撮影対象からの反射光を遮蔽する第２光学
的透過手段を備えたものである。According to a first aspect of the present invention, there is provided an image pickup device, which is provided with an illumination means for illuminating an object to be photographed, an image pickup means for photographing an object to be photographed, and a position for blocking external light from hitting the object to be photographed. A first optical transmission unit that attenuates external light by transmitting at least a part of the external light and blocking the other part of the external light, and arranged between the photographing target and the photographing unit. The second optical transmission means is provided for transmitting the reflected light from the photographing target illuminated by the illumination means and for blocking the reflected light from the photographing target due to the attenuated external light.
【０００７】また、請求項第２項の発明による撮影装置
は、請求項第１項記載のものにおいて、撮影対象は車両
の運転者であり、第１光学的透過手段は車両内外を分離
する光透過部に配置されており、第２光学的透過手段は
運転者と撮影手段との間に配置されていることを特徴と
するものである。According to a second aspect of the present invention, in the image pickup apparatus according to the first aspect, the object to be photographed is the driver of the vehicle, and the first optical transmission means separates the light for separating the inside and the outside of the vehicle. The second optical transmission unit is arranged in the transmission unit, and the second optical transmission unit is arranged between the driver and the photographing unit.
【０００８】また、請求項第３項の発明による撮影装置
は、請求項第２項記載のものにおいて、第１光学的透過
手段はフロントガラスの上部に取り付けられていること
を特徴とするものである。According to a third aspect of the present invention, in the image pickup apparatus according to the second aspect, the first optical transmission means is attached to the upper part of the windshield. is there.
【０００９】また、請求項第４項の発明による撮影装置
は、請求項第１項ないし第３項のいずれかに記載のもの
において、第１光学的透過手段は可視光を通過し赤外光
を遮蔽する赤外カットフィルタであり、第２光学的透過
手段は赤外光を通過し可視光を遮蔽する可視光カットフ
ィルタであり、照明手段は赤外光を照射するものである
ことを特徴とするものである。According to a fourth aspect of the present invention, there is provided an image pickup apparatus according to any one of the first to third aspects, wherein the first optical transmission means transmits visible light and infrared light. And an infrared cut filter for blocking the visible light, the second optical transmission means is a visible light cut filter for passing the infrared light and blocking the visible light, and the illumination means irradiates the infrared light. It is what
【００１０】また、請求項第５項の発明による撮影装置
は、請求項第１項ないし第３項のいずれかに記載のもの
において、第１光学的透過手段と第２光学的透過手段
は、互いに異なる偏光面を持つ偏光板からなることを特
徴とするものである。An image pickup apparatus according to a fifth aspect of the present invention is the image pickup apparatus according to any one of the first to third aspects, wherein the first optical transmission means and the second optical transmission means are: It is characterized by comprising polarizing plates having different polarization planes.
【００１１】[0011]
【作用】この発明に係る撮影装置では、外部光の影響を
第１光学的透過手段と第２光学的透過手段により、著し
く減衰させる。一方、照明手段によって照射された撮影
対象からの反射光は第２光学的透過手段を透過し、撮影
手段はこの反射光による像を撮影する。In the photographing apparatus according to the present invention, the influence of the external light is remarkably attenuated by the first optical transmission means and the second optical transmission means. On the other hand, the reflected light from the object to be photographed illuminated by the illumination means passes through the second optical transmission means, and the photographing means photographs an image by this reflected light.
【００１２】[0012]
実施例１．以下、この発明の実施例１による撮影装置を
図について説明する。図１はこの発明の実施例１による
撮影装置の構成を示す説明図であり、図１（ａ）は側面
から見た構成を示し、図１（ｂ）は運転席から見た構成
を示す。図において、３は例えば車両の運転者などの撮
影対象、１０は運転者３を照明する照明手段で、例えば
近赤外光を照射する赤外ＬＥＤ、１１は運転者３を撮影
する撮影手段で、例えば可視光から近赤外光までの撮影
が可能な赤外ＣＣＤカメラである。２１は外部光７が運
転者３に当たるのを遮る位置に配置された第１光学的透
過手段で、外部光７のうちの少なくとも可視光の一部を
透過し、外部光７の他部を遮蔽することにより、外部光
７を減衰させる。この実施例では、第１光学的透過手段
２１は車両内外を分離する光透過部に配置されており、
具体的には車内のフロントガラス１の上部に取り付けら
れた赤外カットフィルタで構成している。２０は第２光
学的透過手段で、運転者３と赤外ＣＣＤカメラ１１との
間に配置され、赤外ＬＥＤによって照明された運転者３
からの反射光を透過させると共に、赤外カットフィルタ
で減衰した外部光７による運転者３からの反射光を遮蔽
する可視光カットフィルタで構成している。２２は赤外
カットフィルタ２１を天井２に固定するフィルタ留め金
具である。Example 1. An image pickup apparatus according to the first embodiment of the present invention will be described below with reference to the drawings. 1A and 1B are explanatory views showing a configuration of an image pickup apparatus according to a first embodiment of the present invention. FIG. 1A shows a configuration seen from a side surface, and FIG. 1B shows a configuration seen from a driver's seat. In the figure, 3 is an object to be imaged, for example, a driver of a vehicle, 10 is an illuminating means for illuminating the driver 3, for example, an infrared LED for irradiating near-infrared light, and 11 is an imaging means for imaging the driver 3. For example, it is an infrared CCD camera capable of photographing from visible light to near infrared light. Reference numeral 21 denotes a first optical transmission means arranged at a position to block the external light 7 from hitting the driver 3, and transmits at least a part of the visible light of the external light 7 and shields the other part of the external light 7. By doing so, the external light 7 is attenuated. In this embodiment, the first optical transmission means 21 is arranged in the light transmission part for separating the inside and outside of the vehicle,
Specifically, it is composed of an infrared cut filter attached to the upper part of the windshield 1 in the vehicle. Reference numeral 20 denotes a second optical transmission means, which is disposed between the driver 3 and the infrared CCD camera 11 and is illuminated by the infrared LED.
The visible light cut filter transmits the reflected light from the driver 3 and blocks the reflected light from the driver 3 due to the external light 7 attenuated by the infrared cut filter. Reference numeral 22 is a filter fastener for fixing the infrared cut filter 21 to the ceiling 2.
【００１３】次に、この実施例の動作について説明す
る。赤外ＬＥＤ１０が運転者３の顔面全体に近赤外光を
照射し、赤外ＣＣＤカメラ１１が運転者３の像を撮影す
る動作は従来装置と同様であるので説明を省略する。外
部光７は光路Ｌ３でフロントガラス１に入射し、光路Ｌ
４を通り赤外カットフィルタ２１で赤外成分を減衰させ
られた後、光路Ｌ５で運転者３を照射する。この外部光
７による運転者３の像は同じく光路Ｌ２により可視光カ
ットフィルタ２０を通るが、可視光カットフィルタ２０
により可視光成分が除かれ、赤外ＣＣＤカメラ１１には
外部光７の可視光成分及び赤外光成分は入力しない。即
ち、赤外ＣＣＤカメラ１１は外部光７の影響なく、赤外
ＬＥＤ１０の照射による運転者３の像を撮影する。ま
た、赤外カットフィルタ２１は可視光を通過するので、
運転者３の前方の視認性を妨げることはない。Next, the operation of this embodiment will be described. The infrared LED 10 irradiates the entire face of the driver 3 with near-infrared light, and the operation of the infrared CCD camera 11 for capturing an image of the driver 3 is the same as that of the conventional device, and therefore its explanation is omitted. The external light 7 enters the windshield 1 through the optical path L3 and
After passing through 4, the infrared component is attenuated by the infrared cut filter 21, the driver 3 is illuminated through the optical path L5. The image of the driver 3 due to the external light 7 also passes through the visible light cut filter 20 by the optical path L2, but the visible light cut filter 20
The visible light component is removed by, and the visible light component and infrared light component of the external light 7 are not input to the infrared CCD camera 11. That is, the infrared CCD camera 11 captures an image of the driver 3 by irradiation of the infrared LED 10 without being affected by the external light 7. Further, since the infrared cut filter 21 passes visible light,
The visibility of the front of the driver 3 is not hindered.
【００１４】実施例２．図２はこの発明の実施例２によ
る撮影装置の構成を示す説明図である。図において、２
３は外部光７が運転者３に当たるのを遮る位置に配置さ
れた第１光学的透過手段で、外部光７のうちの少なくと
も可視光の一部を透過し、外部光７の他部を遮蔽するこ
とにより、外部光７を減衰させる。この実施例では、第
１光学的透過手段２１は車両内外を分離する光透過部に
配置されており、具体的には車内のフロントガラス１の
上部に張り付けた赤外カットフィルタ膜で構成してい
る。他の各部分において、実施例１と同一符号は同一、
または相当部分を示す。この実施例の動作は実施例１と
同様であるが、フロントガラス１に赤外カットフィルタ
膜２３を張り付けているので、実施例１と同様の効果に
加え、赤外カットフィルタを取り付ける金具２１が不要
となる効果がある。Example 2. Second Embodiment FIG. 2 is an explanatory diagram showing a configuration of an image pickup apparatus according to a second embodiment of the present invention. In the figure, 2
Reference numeral 3 is a first optical transmission means arranged at a position to block the external light 7 from hitting the driver 3, and transmits at least a part of the visible light of the external light 7 and shields the other part of the external light 7. By doing so, the external light 7 is attenuated. In this embodiment, the first optical transmission means 21 is arranged in the light transmission portion for separating the inside and outside of the vehicle, and specifically, is constituted by an infrared cut filter film attached to the upper part of the windshield 1 inside the vehicle. There is. In each of the other parts, the same reference numerals as those in the first embodiment are the same,
Or shows a considerable part. The operation of this embodiment is the same as that of the first embodiment, but since the infrared cut filter film 23 is attached to the windshield 1, in addition to the effect similar to that of the first embodiment, the metal fitting 21 for mounting the infrared cut filter is provided. There is an unnecessary effect.
【００１５】なお、実施例１及び実施例２においては、
フロントガラス１に取り付け、フロントガラス１から入
射する外部光７について説明したが、これに限るもので
はなく、第１光学的透過手段は車両内外を分離する光透
過部、例えば運転席のサイドのガラスなどに配置されて
いれば同様の効果が得られ、また、１箇所のみでなく、
複数箇所に配置してもよい。In the first and second embodiments,
The external light 7 which is attached to the windshield 1 and is incident from the windshield 1 has been described, but the present invention is not limited to this. The first optical transmission means is a light transmission portion that separates the inside and outside of the vehicle, for example, the glass on the side of the driver's seat. The same effect can be obtained if it is placed in, etc., and not only in one place,
You may arrange in multiple places.
【００１６】実施例３．図３はこの発明の実施例３によ
る撮影装置の構成を示す説明図である。図において、１
２は可視光で運転者を照射するＬＥＤ、１３は運転者３
の可視光成分の映像を撮影するＣＣＤカメラ、２５は第
１光学的透過手段で、例えばフロントガラス１に張り付
けた第１偏光板、２６はＣＣＤカメラ１３の前に取り付
けられた第２光学的透過手段で、例えば偏光板２５と偏
光面が９０度異なる第２偏光板である。この実施例にお
ける第１光学的透過手段２５と第２光学的透過手段２６
は、互いに異なる偏光面を持つ偏光板からなっており、
例えば互いに９０度異なる偏光面を有する。他の各部分
において、実施例１と同一符号は同一、または相当部分
を示す。Embodiment 3. Third Embodiment FIG. 3 is an explanatory diagram showing the structure of an image pickup apparatus according to a third embodiment of the present invention. In the figure, 1
2 is an LED that illuminates the driver with visible light, 13 is the driver 3
Of the visible light component of the CCD camera, 25 is a first optical transmission means, for example, a first polarizing plate attached to the windshield 1, and 26 is a second optical transmission installed in front of the CCD camera 13. The second polarizing plate has a polarization plane different from that of the polarizing plate 25 by 90 degrees. The first optical transmission means 25 and the second optical transmission means 26 in this embodiment.
Consists of polarizing plates with different planes of polarization,
For example, they have polarization planes different from each other by 90 degrees. In each of the other parts, the same reference numerals as those in the first embodiment indicate the same or corresponding parts.
【００１７】次に、この実施例の動作について説明す
る。ＬＥＤ１２は可視光を照射し光路Ｌ１を通って運転
者３を照射する。ＬＥＤ１２の照射により運転者３の像
は、光路Ｌ２に沿って第２偏光板２６を通り、偏光され
る。ＣＣＤカメラ１３はこの偏光された運転者３の像を
撮影する。一方、外部光７は光路Ｌ３でフロントガラス
１に入射し第１偏光板２５で偏光されて光路Ｌ６を通っ
て運転者３に照射する。この外部光７による運転者３の
像は、照明光と同じく光路Ｌ２により第２偏光板２６を
通る。ところが、第１偏光板２５と第２偏光板２６との
偏光面は９０度異なるので、外部光７による運転者３の
像はＣＣＤカメラ１３に撮影されない。即ち、ＣＣＤカ
メラ１３は外部光７の影響なく、ＬＥＤ１２の照射光に
よる運転者３の像を撮影する。Next, the operation of this embodiment will be described. The LED 12 radiates visible light and illuminates the driver 3 through the optical path L1. By the irradiation of the LED 12, the image of the driver 3 passes through the second polarizing plate 26 along the optical path L2 and is polarized. The CCD camera 13 captures this polarized image of the driver 3. On the other hand, the external light 7 enters the windshield 1 through the optical path L3, is polarized by the first polarizing plate 25, and irradiates the driver 3 through the optical path L6. The image of the driver 3 due to the external light 7 passes through the second polarizing plate 26 by the optical path L2 like the illumination light. However, since the polarization planes of the first polarizing plate 25 and the second polarizing plate 26 are different by 90 degrees, the image of the driver 3 by the external light 7 is not captured by the CCD camera 13. That is, the CCD camera 13 captures the image of the driver 3 by the irradiation light of the LED 12 without the influence of the external light 7.
【００１８】この実施例によっても、外部光７の影響を
第１光学的透過手段２５と第２光学的透過手段２６によ
り、著しく減衰させることができる一方、ＬＥＤ１２に
よって照射された運転者３からの反射光は第２光学的透
過手段２６を透過し、ＣＣＤカメラ１３はこの反射光に
よる像を撮影できる。このため、外部光７の影響をほと
んど受けることのない撮影装置が得られる。Also in this embodiment, the influence of the external light 7 can be remarkably attenuated by the first optical transmission means 25 and the second optical transmission means 26, while the influence from the driver 3 illuminated by the LED 12 is provided. The reflected light is transmitted through the second optical transmission means 26, and the CCD camera 13 can take an image by this reflected light. Therefore, it is possible to obtain a photographing device that is hardly affected by the external light 7.
【００１９】実施例４．実施例１〜３では、車両内の撮
影装置について説明したが、この発明は車両内の撮影に
限定するものではなく、ビルの窓際やショ−ウインド内
部など外部光である屋外光が撮影対象のある建物内部に
差し込むような環境においても適用できる。この実施例
は外部光が当たるビルの窓際における撮影装置に適用し
た例を示す。Example 4. Although the image capturing apparatus in the vehicle has been described in the first to third embodiments, the present invention is not limited to image capturing in the vehicle, and outdoor light such as outside light such as a window of a building or the inside of a show window can be captured. It can also be applied in an environment where it is plugged into a building. This embodiment shows an example applied to a photographing device at the window of a building where external light is applied.
【００２０】図４はこの発明の実施例４による撮影装置
の構成を示す説明図である。図において、３０はビルの
ガラス窓、３１は第１光学的透過手段で、例えば赤外カ
ットフィルタ膜、３２は窓を支える壁、３３は撮影対象
である撮影対象人物、３４は撮影対象人物３３を赤外光
で照明する赤外線ランプである。また、２０は第２光学
的透過手段で、撮影対象人物３３と赤外ＣＣＤカメラ１
１との間に配置され、赤外線ランプ３４によって照明さ
れた撮影対象人物３３からの反射光を透過させると共
に、赤外カットフィルタ膜３１で減衰した外部光７によ
る撮影対象人物３３からの反射光を遮蔽する可視光カッ
トフィルタで構成している。赤外カットフィルタ膜３１
は、外部光７が撮影対象人物３３に当たるのを遮る位置
に配置され、外部光７のうちの少なくとも可視光の一部
を透過し、外部光７の他部を遮蔽することにより、外部
光７を減衰させる。この実施例では、第１光学的透過手
段３１は屋内と屋外とを分離する光透過部に配置されて
おり、具体的にはビルのガラス窓３０に張り付けた赤外
カットフィルタ膜で構成している。他の各部分におい
て、実施例１と同一符号は同一、または相当部分を示
す。FIG. 4 is an explanatory diagram showing the construction of an image pickup apparatus according to Embodiment 4 of the present invention. In the figure, 30 is a glass window of a building, 31 is a first optical transmission means, for example, an infrared cut filter film, 32 is a wall that supports the window, 33 is a person to be photographed, 34 is a person 33 to be photographed. Is an infrared lamp that illuminates with infrared light. Reference numeral 20 denotes a second optical transmission means, which is a person 33 to be photographed and the infrared CCD camera 1.
1, which transmits the reflected light from the photographing target person 33 illuminated by the infrared lamp 34 and transmits the reflected light from the photographing target person 33 by the external light 7 attenuated by the infrared cut filter film 31. It is composed of a visible light cut filter that blocks light. Infrared cut filter film 31
Is arranged at a position that blocks the external light 7 from hitting the person 33 to be photographed, transmits at least a part of the visible light of the external light 7, and blocks the other part of the external light 7, thereby To attenuate. In this embodiment, the first optical transmission means 31 is arranged in the light transmission portion that separates indoors and outdoors, and is specifically configured by an infrared cut filter film attached to the glass window 30 of the building. There is. In each of the other parts, the same reference numerals as those in the first embodiment indicate the same or corresponding parts.
【００２１】以下、この実施例の動作について説明す
る。赤外線ランプ３４は撮影対象人物３３の全体に近赤
外光を照射し、赤外ＣＣＤカメラ１１は撮影対象人物３
３の像を可視光カットフィルタ２０を通して撮影する。
一方、外部光７は光路Ｌ３で窓ガラス３０に入射し、赤
外カットフィルタ膜３１を通り、赤外成分を減衰させら
れた後、光路Ｌ４を通って撮影対象人物３３を照射す
る。赤外成分を減衰した可視光成分の外部光７による撮
影対象人物３３の像は、照明光と同じく光路Ｌ２に沿っ
て可視光カットフィルタ２０を通る。ところが、可視光
カットフィルタ膜２０により可視光成分が除かれ、赤外
ＣＣＤカメラ１１には外部光７の可視光成分及び赤外光
成分は入力しない。即ち、赤外ＣＣＤカメラ１１は外部
光７の影響なく、赤外線ランプ３４の照射による撮影対
象人物３３の像を撮影できる。また、赤外カットフィル
タ膜３１は可視光を通過するので、窓ガラス３０の視認
性を妨げることはない。The operation of this embodiment will be described below. The infrared lamp 34 irradiates the entire person 33 to be photographed with near-infrared light, and the infrared CCD camera 11 causes the person 3 to be photographed.
The image of No. 3 is photographed through the visible light cut filter 20.
On the other hand, the external light 7 enters the window glass 30 through the optical path L3, passes through the infrared cut filter film 31, is attenuated in the infrared component, and then illuminates the subject 33 to be photographed through the optical path L4. The image of the person 33 to be photographed by the external light 7 of the visible light component in which the infrared component is attenuated passes through the visible light cut filter 20 along the optical path L2 as with the illumination light. However, the visible light component is removed by the visible light cut filter film 20, and the visible light component and the infrared light component of the external light 7 are not input to the infrared CCD camera 11. That is, the infrared CCD camera 11 can take an image of the person 33 to be photographed by the irradiation of the infrared lamp 34 without being affected by the external light 7. Further, since the infrared cut filter film 31 transmits visible light, it does not hinder the visibility of the window glass 30.
【００２２】実施例５．実施例１では、撮影対象を車両
の運転者で説明したが、この発明の撮影対象は運転者に
こだわるものではなく、車内や屋内のものであればよ
い。また、実施例１では、撮影手段の配置位置をインス
ツルメントパネルの表面６としたが、撮影手段の配置場
所は車の天井など、車内や屋内の撮影対象を撮影できる
位置であればどこでもよく、実施例１と同様の効果を奏
する。Embodiment 5. In the first embodiment, the image capturing target is described as the driver of the vehicle, but the image capturing target of the present invention is not limited to the driver, and may be the vehicle interior or indoor. Further, in the first embodiment, the arrangement position of the image pickup means is the surface 6 of the instrument panel, but the arrangement position of the image pickup means may be anywhere such as the ceiling of the vehicle as long as it can take an image of the image pickup object inside or inside the vehicle. The same effect as the first embodiment is obtained.
【００２３】実施例６．実施例１では、フロントガラス
１の上部に赤外カットフィルタ膜２１を張り付けたが、
車体の天井２に配置され外部光７を取り込むガラス窓、
いわゆるサンル−フに赤外カットフィルタを張り付けて
もよい。サンルーフに取り付けることにより、車体上部
からの外部光７の影響を著しく減衰させることができ
る。Example 6. In Example 1, the infrared cut filter film 21 was attached to the upper part of the windshield 1,
A glass window that is placed on the ceiling 2 of the vehicle body and takes in external light 7.
An infrared cut filter may be attached to a so-called sun roof. By attaching to the sunroof, the influence of the external light 7 from the upper part of the vehicle body can be significantly reduced.
【００２４】実施例７．実施例２では、フロントガラス
１のみに赤外カットフィルタ膜２３を張り付けたが、車
内と車外を分ける全てのガラスに赤外カットフィルタ膜
２３を張り付ければ更に効果的に外部光を減衰させるこ
とができる。Example 7. In the second embodiment, the infrared cut filter film 23 is attached only to the windshield 1, but if the infrared cut filter film 23 is attached to all the glasses that separate the inside and the outside of the vehicle, the external light can be attenuated more effectively. You can
【００２５】実施例８．実施例２では、フロントガラス
１に赤外カットフィルタ膜２３を張り付けたが、第２光
学的透過手段の取り付け方法はこれにこだわるものでは
なく、赤外カットフィルタとなる物質をガラス面に蒸着
または塗装することにより構成してもよい。Example 8. In the second embodiment, the infrared cut filter film 23 is attached to the windshield 1. However, the attachment method of the second optical transmission means is not limited to this, and a substance to be an infrared cut filter is deposited on the glass surface or You may comprise by painting.
【００２６】実施例９．実施例３では、第１光学的透過
手段２５と第２光学的透過手段２６を、互いに異なる偏
光面を持つ偏光板から構成し、可視光で運転者３を照明
したが、実施例１で用いた撮影手段と照明手段のよう
に、近赤外光で照明し、近赤外まで撮影できるＣＣＤカ
メラで運転者を撮影してもよい。また、第１光学的透過
手段２５と第２光学的透過手段２６は、互いに９０度の
異なる偏光面を持つ偏光板から構成したが、９０度に限
るものではない。Example 9. In the third embodiment, the first optical transmission means 25 and the second optical transmission means 26 are composed of polarizing plates having different polarization planes, and the driver 3 is illuminated with visible light. The driver may be photographed by a CCD camera that can illuminate with near-infrared light and can photograph up to near-infrared light like the photographing means and the illuminating means. Further, the first optical transmission means 25 and the second optical transmission means 26 are composed of polarizing plates having polarization planes different from each other by 90 degrees, but they are not limited to 90 degrees.
【００２７】[0027]
【発明の効果】以上のように、請求項１の発明によれ
ば、撮影対象を照明する照明手段、撮影対象を撮影する
撮影手段、外部光が撮影対象に当たるのを遮る位置に配
置され、外部光のうちの少なくとも可視光の一部を透過
し、外部光の他部を遮蔽することにより、外部光を減衰
させる第１光学的透過手段、及び撮影対象と撮影手段と
の間に配置され、照明手段によって照明された撮影対象
からの反射光を透過させると共に、減衰した外部光によ
る撮影対象からの反射光を遮蔽する第２光学的透過手段
を備えたことにより、照明光以外の外部光の影響を受け
ること無く、撮影対象を撮影できる撮影装置が得られる
効果がある。As described above, according to the first aspect of the invention, the illumination means for illuminating the object to be photographed, the photographing means for photographing the object to be photographed, and the external light are arranged at a position to prevent the light from hitting the object to be photographed. A first optical transmission unit that attenuates external light by transmitting at least a part of visible light and blocking the other part of external light, and is disposed between the imaging target and the imaging unit, By providing the second optical transmission unit that transmits the reflected light from the photographing target illuminated by the illuminating unit and shields the reflected light from the photographing target caused by the attenuated external light, the external light other than the illuminating light is provided. There is an effect that it is possible to obtain a photographing device that can photograph a subject without being affected.
【００２８】また、請求項２の発明によれば、請求項１
の発明において、撮影対象は車両の運転者であり、第１
光学的透過手段は車両内外を分離する光透過部に配置さ
れており、第２光学的透過手段は運転者と撮影手段との
間に配置されていることを特徴とすることにより、照明
光以外の外部光の影響を受けること無く、運転者を撮影
できる撮影装置が得られる効果がある。According to the invention of claim 2, claim 1
In the invention of claim 1, the object to be photographed is the driver of the vehicle, and the first
The optical transmission means is arranged in the light transmission part separating the inside and outside of the vehicle, and the second optical transmission means is arranged between the driver and the photographing means, so that the other than the illumination light. There is an effect that a photographing device capable of photographing the driver can be obtained without being affected by the external light.
【００２９】また、請求項３の発明によれば、請求項２
の発明において、第１光学的透過手段はフロントガラス
の上部に取り付けられていることを特徴とすることによ
り、請求項２と同様の効果に加えて、第１光学的透過手
段とフロントガラス等のガラスとが一体になるので、運
転者が第１光学的透過手段を意識することなく車外を見
ることのできる撮影装置が得られる効果がある。According to the invention of claim 3, claim 2
In the invention of claim 1, the first optical transmission means is attached to the upper part of the windshield, and in addition to the same effect as the second aspect, the first optical transmission means and the windshield are provided. Since it is integrated with the glass, there is an effect that a driver can see the outside of the vehicle without being aware of the first optical transmission means.
【００３０】また、請求項４の発明によれば、請求項１
ないし請求項３のいずれかの発明において、第１光学的
透過手段は可視光を通過し赤外光を遮蔽する赤外カット
フィルタであり、第２光学的透過手段は赤外光を通過し
可視光を遮蔽する可視光カットフィルタであり、照明手
段は赤外光を照射するものであることを特徴とすること
により、照明光以外の外部光の影響を受けること無く、
撮影対象を撮影できる撮影装置が得られる効果がある。According to the invention of claim 4, claim 1
In the invention according to any one of claims 1 to 3, the first optical transmission unit is an infrared cut filter that transmits visible light and blocks infrared light, and the second optical transmission unit transmits infrared light and is visible. It is a visible light cut filter that shields light, and the illumination means is characterized by irradiating infrared light, without being affected by external light other than illumination light,
There is an effect that a photographing device capable of photographing a photographing target can be obtained.
【００３１】また、請求項５の発明によれば、請求項１
ないし請求項３のいずれかの発明において、第１光学的
透過手段と第２光学的透過手段は、互いに異なる偏光面
を持つ偏光板からなることを特徴とすることにより、照
明光以外の外部光の影響を受けること無く、撮影対象を
撮影できる撮影装置が得られる効果がある。According to the invention of claim 5, claim 1
The invention according to any one of claims 1 to 3 is characterized in that the first optical transmission means and the second optical transmission means are polarizing plates having polarization planes different from each other. There is an effect that a photographing device capable of photographing a photographing target can be obtained without being affected by.
【図１】この発明の実施例１による撮影装置を示す説明
図である。FIG. 1 is an explanatory diagram showing an image pickup apparatus according to a first embodiment of the present invention.
【図２】この発明の実施例２による撮影装置を示す説明
図である。FIG. 2 is an explanatory diagram showing a photographing device according to a second embodiment of the present invention.
【図３】この発明の実施例３による撮影装置を示す説明
図である。FIG. 3 is an explanatory diagram showing an image pickup apparatus according to a third embodiment of the present invention.
【図４】この発明の実施例４による撮影装置を示す説明
図である。FIG. 4 is an explanatory diagram showing an image pickup apparatus according to Embodiment 4 of the present invention.
【図５】従来の撮影装置の構成を示す説明図である。FIG. 5 is an explanatory diagram showing a configuration of a conventional imaging device.
１ フロントガラス ３ 運転者 ７ 外部光 １０ 赤外ＬＥＤ １１ 赤外ＣＣＤカメラ １２ ＬＥＤ １３ ＣＣＤカメラ ２０ 可視光カットフィルタ ２１ 赤外カットフィルタ ２３ 赤外カットフィルタ膜 ２５ 第１偏光板 ２６ 第２偏光板 ３１ 赤外カットフィルタ膜 ３３ 撮影対象人物 ３４ 赤外線ランプ 1 Windshield 3 Driver 7 External Light 10 Infrared LED 11 Infrared CCD Camera 12 LED 13 CCD Camera 20 Visible Light Cut Filter 21 Infrared Cut Filter 23 Infrared Cut Filter Film 25 First Polarizing Plate 26 Second Polarizing Plate 31 Infrared cut filter film 33 Person to be photographed 34 Infrared lamp
Claims (5)
対象を撮影する撮影手段、外部光が上記撮影対象に当た
るのを遮る位置に配置され、上記外部光のうちの少なく
とも可視光の一部を透過し、上記外部光の他部を遮蔽す
ることにより、上記外部光を減衰させる第１光学的透過
手段、及び上記撮影対象と上記撮影手段との間に配置さ
れ、上記照明手段によって照明された上記撮影対象から
の反射光を透過させると共に、上記減衰した外部光によ
る上記撮影対象からの反射光を遮蔽する第２光学的透過
手段を備えた撮影装置。1. An illumination means for illuminating an object to be photographed, a photographing means for photographing the object to be photographed, a position for blocking external light from hitting the object to be photographed, and at least a part of visible light of the external light. The first optical transmission unit that transmits the light and shields the other portion of the external light to attenuate the external light, and is arranged between the object to be imaged and the image capturing unit and illuminated by the illumination unit. An imaging apparatus comprising: a second optical transmission unit that transmits reflected light from the object to be photographed and blocks reflected light from the object to be photographed due to the attenuated external light.
学的透過手段は車両内外を分離する光透過部に配置され
ており、第２光学的透過手段は上記運転者と上記撮影手
段との間に配置されていることを特徴とする請求項第１
項記載の撮影装置。2. The object to be photographed is a driver of a vehicle, the first optical transmission means is arranged in a light transmission portion separating the inside and outside of the vehicle, and the second optical transmission means is the driver and the photographing means. It is arranged between the first and the second parts.
The photographing device according to the item.
上部に取り付けられていることを特徴とする請求項第２
項記載の撮影装置。3. The first optical transmission means is attached to the upper part of the windshield.
The photographing device according to the item.
外光を遮蔽する赤外カットフィルタであり、第２光学的
透過手段は赤外光を通過し可視光を遮蔽する可視光カッ
トフィルタであり、照明手段は赤外光を照射するもので
あることを特徴とする請求項第１項ないし第３項のいず
れかに記載の撮影装置。4. The first optical transmission means is an infrared cut filter which transmits visible light and blocks infrared light, and the second optical transmission means transmits visible light and which blocks visible light. 4. The photographing device according to claim 1, wherein the photographing device is a cut filter, and the illuminating unit irradiates infrared light.
段は、互いに異なる偏光面を持つ偏光板からなることを
特徴とする請求項第１項ないし第３項のいずれかに記載
の撮影装置。5. The first optical transmission means and the second optical transmission means are polarizing plates having polarization planes different from each other, according to any one of claims 1 to 3. Imaging device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP05107874A JP3119031B2 (en) | 1993-05-10 | 1993-05-10 | Imaging equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP05107874A JP3119031B2 (en) | 1993-05-10 | 1993-05-10 | Imaging equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06319067A true JPH06319067A (en) | 1994-11-15 |
| JP3119031B2 JP3119031B2 (en) | 2000-12-18 |
Family
ID=14470284
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP05107874A Expired - Fee Related JP3119031B2 (en) | 1993-05-10 | 1993-05-10 | Imaging equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3119031B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007029712A (en) * | 2005-06-23 | 2007-02-08 | Honda Motor Co Ltd | Visual axis detecting apparatus |
| JP2007155370A (en) * | 2005-12-01 | 2007-06-21 | Shimadzu Corp | Head motion tracker |
| US20090244288A1 (en) * | 2008-03-31 | 2009-10-01 | Aisin Seiki Kabushiki Kaisha | Imaging apparatus and lighting apparatus for imaging |
| DE102008002086B4 (en) * | 2007-05-30 | 2009-10-01 | Toyota Jidosha Kabushiki Kaisha, Toyota-shi | Vehicle imaging system and vehicle control device |
| KR101327032B1 (en) * | 2012-06-12 | 2013-11-20 | 현대자동차주식회사 | Apparatus and method for removing reflected light of camera image |
-
1993
- 1993-05-10 JP JP05107874A patent/JP3119031B2/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007029712A (en) * | 2005-06-23 | 2007-02-08 | Honda Motor Co Ltd | Visual axis detecting apparatus |
| JP2007155370A (en) * | 2005-12-01 | 2007-06-21 | Shimadzu Corp | Head motion tracker |
| JP4692250B2 (en) * | 2005-12-01 | 2011-06-01 | 株式会社島津製作所 | Head motion tracker |
| DE102008002086B4 (en) * | 2007-05-30 | 2009-10-01 | Toyota Jidosha Kabushiki Kaisha, Toyota-shi | Vehicle imaging system and vehicle control device |
| US20090244288A1 (en) * | 2008-03-31 | 2009-10-01 | Aisin Seiki Kabushiki Kaisha | Imaging apparatus and lighting apparatus for imaging |
| JP2009246903A (en) * | 2008-03-31 | 2009-10-22 | Aisin Seiki Co Ltd | Imaging apparatus, and lighting apparatus for imaging |
| US8368758B2 (en) | 2008-03-31 | 2013-02-05 | Aisin Seiki Kabushiki Kaisha | Imaging apparatus and lighting apparatus for imaging |
| KR101327032B1 (en) * | 2012-06-12 | 2013-11-20 | 현대자동차주식회사 | Apparatus and method for removing reflected light of camera image |
| CN103481824A (en) * | 2012-06-12 | 2014-01-01 | 现代自动车株式会社 | Apparatus and method for removing a reflected light from an imaging device image |
| US9025029B2 (en) | 2012-06-12 | 2015-05-05 | Hyundai Motor Company | Apparatus and method for removing a reflected light from an imaging device image |
| CN103481824B (en) * | 2012-06-12 | 2016-12-28 | 现代自动车株式会社 | For removing the apparatus and method of reflection light from imaging device image |
| DE102012222303B4 (en) | 2012-06-12 | 2024-05-16 | Hyundai Motor Company | Apparatus and method for removing reflected light from an image of an imaging device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3119031B2 (en) | 2000-12-18 |
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