JPH0424590A - Identification device for moving object - Google Patents
Identification device for moving objectInfo
- Publication number
- JPH0424590A JPH0424590A JP2128860A JP12886090A JPH0424590A JP H0424590 A JPH0424590 A JP H0424590A JP 2128860 A JP2128860 A JP 2128860A JP 12886090 A JP12886090 A JP 12886090A JP H0424590 A JPH0424590 A JP H0424590A
- Authority
- JP
- Japan
- Prior art keywords
- infrared rays
- optical filter
- light
- infrared
- moving object
- 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.)
- Pending
Links
- 230000003287 optical effect Effects 0.000 claims abstract description 49
- 230000005855 radiation Effects 0.000 abstract description 16
- 230000001105 regulatory effect Effects 0.000 abstract 3
- 238000002834 transmittance Methods 0.000 description 11
- 230000035945 sensitivity Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000003595 spectral effect Effects 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 241001465754 Metazoa Species 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000011514 reflex Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Landscapes
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
- Geophysics And Detection Of Objects (AREA)
- Transforming Light Signals Into Electric Signals (AREA)
- Closed-Circuit Television Systems (AREA)
Abstract
Description
【発明の詳細な説明】
[産業上の利用分野]
この発明は例えば地上の移動体に装着された赤外線光源
から放射される赤外線と自然光の反射による可視光を共
に受光し表示映像上から移動体を識別する移動体識別装
置、特に移動体識別能力の改良に関する。[Detailed Description of the Invention] [Industrial Application Field] This invention receives both infrared rays emitted from an infrared light source attached to a moving body on the ground and visible light reflected from natural light, and displays the moving body from a displayed image. The present invention relates to a mobile object identification device for identifying a mobile object, and in particular to an improvement in the ability to identify a mobile object.
[従来の技術]
第6図は従来の移動体識別装置のブロック図であり、1
は道路などを歩行または走行する移動体、旦は赤外線や
可視光を受光する受光部、6は光学レンズ、7は受光信
号の光電変換部と変換信号を転送する走査回路よりなる
CCDカメラ、9は受光部旦からの赤外線ならびに可視
光の映像信号を表示するモニタ、13は移動体1に装着
され赤外線を放射する赤外線光源、14は受光部旦へ入
力される光量を調節する絞り機構である。[Prior Art] FIG. 6 is a block diagram of a conventional mobile object identification device.
9 is a moving object that walks or runs on a road, 1 is a light receiving section that receives infrared rays and visible light, 6 is an optical lens, 7 is a CCD camera consisting of a photoelectric converter for the received light signal and a scanning circuit that transfers the converted signal, 9 13 is an infrared light source mounted on the moving body 1 and emits infrared rays; and 14 is an aperture mechanism that adjusts the amount of light input to the light receiving section. .
従来の移動体識別装置は上記のように構成され、道路上
を歩行または走行する移動体1に装着された赤外線光源
13は上部空間に向は赤外線を放射する。例えばヘリコ
プタなどへ搭載された受光部旦にて上記赤外線は受光さ
れる。このとき自然光による周囲の風景に関する可視光
も同時に受光される。受光部旦の入力には開口面積を調
整して透過光量を制御する絞り機構14が光学レンズ6
に配設され、赤外線と可視光の受光レベルが共に調節さ
れてCCDカメラ7へ加えられる。The conventional moving object identification device is configured as described above, and the infrared light source 13 attached to the moving object 1 walking or running on the road emits infrared rays toward the upper space. For example, the infrared rays are received by a light receiving unit mounted on a helicopter or the like. At this time, visible light related to the surrounding scenery due to natural light is also received at the same time. An optical lens 6 is connected to an aperture mechanism 14 that controls the amount of transmitted light by adjusting the aperture area for the input from the light receiving section.
The receiving level of both infrared rays and visible light is adjusted and applied to the CCD camera 7.
第7図は絞り機構出力の受光レベルの一例であり、
移動体1識別の赤外線と周囲の風景に関する可視光は凡
そ等量のレベル調整を受は出力される。光電変換部と走
査回路より構成されるCCDカメラ7には、絞り機構1
4にて調節された赤外線や可視光が加わり、当該レベル
に応じてホトダイオードなどを介し電気信号への変換が
行われ走査回路により順次転出される。FIG. 7 shows an example of the light reception level of the aperture mechanism output, and the infrared rays for identifying the moving object 1 and the visible light for the surrounding scenery are output with approximately the same amount of level adjustment. The CCD camera 7, which is composed of a photoelectric conversion section and a scanning circuit, has an aperture mechanism 1.
The infrared rays and visible light adjusted in step 4 are added, and depending on the level, are converted into electrical signals via photodiodes and the like, and sequentially transferred by a scanning circuit.
従って移動体1から放射された赤外線は周囲の風景と共
にモニタTVなどを用いたモニタ9へ重畳表示され、表
示映像上から移動体1の識別が行われる。Therefore, the infrared rays emitted from the moving object 1 are superimposed and displayed on the monitor 9 using a monitor TV or the like together with the surrounding scenery, and the moving object 1 is identified from the displayed image.
[発明が解決しようとする課題]
上記のような従来の移動体識別装置では、受光部旦へ入
力される赤外線と可視光は共に絞り機構14により受光
感度が調節され、その風景は所定の明るさに調節してモ
ニタ9へ映像表示されるが、同時に移動体1からの赤外
線の受光レベルも同等の調節を受けるので、赤外線と風
景とのコントラストには顕著な差を生じない。[Problems to be Solved by the Invention] In the conventional moving object identification device as described above, the light receiving sensitivity of both the infrared and visible light input to the light receiving section is adjusted by the aperture mechanism 14, and the scenery is adjusted to a predetermined brightness. The image is displayed on the monitor 9 after being adjusted to the desired angle, but at the same time, the level of infrared rays received from the moving body 1 is also adjusted in the same way, so there is no noticeable difference in the contrast between the infrared rays and the scenery.
従ってモニタ9の濃淡表示映像からは赤外線の検出が容
易に行えない。特に映像が白黒表示のとき赤外線の検出
は一層困難となる。Therefore, infrared rays cannot be easily detected from the gray-scale display image on the monitor 9. In particular, when the image is displayed in black and white, detection of infrared rays becomes even more difficult.
モニタ9の表示映像からの赤外線の検出が容易にできな
いので、移動体1の識別は常時行えず、従って移動経路
なども正しく把握できないという問題点があった。Since infrared rays cannot be easily detected from the image displayed on the monitor 9, the moving object 1 cannot be identified at all times, and therefore the moving route cannot be accurately grasped.
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、表示映像上の移動体1と風景とのコントラストが所
定の比率に調節でき、移動体1が常に確実に識別されて
、周囲の風景との相対位置が正しく把握できる移動体識
別装置を得ることを目的とする。This invention was made to solve such problems, and the contrast between the moving object 1 and the scenery on the displayed image can be adjusted to a predetermined ratio, so that the moving object 1 can always be reliably identified and the surrounding scenery An object of the present invention is to obtain a moving object identification device that can accurately grasp the relative position of a moving object.
[課題を解決するための手段]
この発明に係る移動体識別装置は、移動体に装着され空
間の広い覆域に厘り連続信号またはコード変調信号の何
れか一方の赤外線を放射する赤外線光源と、所定入射角
にて赤外線を透過し可視光が遮断され入射角を変えると
可視光の一部が透過されるCCDカメラの前方に配設さ
れた光学フィルタと、光学フィルタへの赤外線の入射角
を調節する駆動部とを設けたものである。[Means for Solving the Problems] A mobile object identification device according to the present invention includes an infrared light source that is attached to a mobile object and radiates infrared rays as either a continuous signal or a code modulation signal over a wide spatial coverage area. , an optical filter disposed in front of the CCD camera that transmits infrared rays at a predetermined angle of incidence, blocks visible light, and partially transmits visible light when the angle of incidence is changed, and the angle of incidence of infrared rays on the optical filter. The drive unit is equipped with a drive unit that adjusts the
[作用]
この発明においては、赤外線光源に近赤外線を用いて、
受光部の入力に赤外線を透過し可視光の透過率がその入
射角により変わる光学フィルタを配置し、光学フィルタ
の入射角は駆動部により制御されて、光学フィルタから
出力される隣接した波長の赤外線と可視光との受光レベ
ルの比率が調節できる。[Function] In this invention, near-infrared rays are used as an infrared light source,
An optical filter that transmits infrared rays and whose visible light transmittance changes depending on the angle of incidence is arranged at the input of the light receiving section, and the incident angle of the optical filter is controlled by the driving section, and the infrared rays of adjacent wavelengths output from the optical filter are The ratio of the received light level between visible light and visible light can be adjusted.
異なるレベルにて受光された赤外線と可視光はCCDカ
メラにおいて光電変換されて電気信号となり、走査回路
の動作により光学フィルタの入射角にて調節された比率
に応じたレベルの赤外線ならびに可視光による周囲の風
景信号がCCDカメラから出力される。CCDカメラか
らの信号を表示器にて映像表示すると赤外線の信号レベ
ルは可視光に比し著るしく大きいので、例え白黒の′a
淡表示においても明瞭に識別できる。The infrared rays and visible light received at different levels are photoelectrically converted into electrical signals by the CCD camera, and by the operation of the scanning circuit, the ambient infrared rays and visible rays are detected at levels according to the ratio adjusted by the incident angle of the optical filter. A landscape signal of 1 is output from the CCD camera. When the signal from a CCD camera is displayed as an image on a display, the signal level of infrared rays is significantly higher than that of visible light, so even if the signal is in black and white,
It can be clearly identified even in a dim display.
また明るい自然光の下においてはレンズ系の絞り機構に
より受光部全体の感度を制御してぃ′るので赤外線受光
感度も低下するが、この発明においては光学的なフィル
タを用いて自然光に対する感度のみが制御されるので、
赤外線に関しては最大感度にすることができる。In addition, under bright natural light, the sensitivity of the entire light receiving section is controlled by the aperture mechanism of the lens system, so the sensitivity to infrared light also decreases, but in this invention, only the sensitivity to natural light is reduced by using an optical filter. Because it is controlled
Maximum sensitivity can be achieved for infrared rays.
更にCODカメラの出力をカラー信号に変換しカラーモ
ニタへ加えると、赤外線のみがカラー信号となり風景は
白黒にて表示されるので、移動体の識別が一層確実に行
える。従って歩行または走行する移動体が常時明瞭に識
別され歩行または走行経路などが正しく把握できる。Furthermore, if the output of the COD camera is converted into a color signal and applied to a color monitor, only the infrared rays will become a color signal and the scenery will be displayed in black and white, so that moving objects can be identified more reliably. Therefore, moving objects walking or running can be clearly identified at all times, and walking or running routes can be accurately grasped.
[実施例]
この発明の一実施例を添付図面を参照して詳細に説明す
る。[Embodiment] An embodiment of the present invention will be described in detail with reference to the accompanying drawings.
第1図はこの発明の一実施例を示すブロック図であり、
図において、1.3.6.7.9は従来装置と同一で、
2は移動体1に搭載され赤外線を空間に向は放射する赤
外線光源、4はガラス基板に薄膜を形成させ可視光の入
射角度によりその透過率が変わる光学フィルタ、5は光
学フィルタ4の入射角を制御する駆動部、8は赤外信号
をカラー信号へ変換する擬似カラー表示回路を示してい
る。FIG. 1 is a block diagram showing an embodiment of the present invention. In the figure, 1.3.6.7.9 are the same as the conventional device;
2 is an infrared light source mounted on the moving body 1 and emits infrared rays into space; 4 is an optical filter formed by forming a thin film on a glass substrate and whose transmittance changes depending on the incident angle of visible light; 5 is an incident angle of the optical filter 4; 8 indicates a pseudo color display circuit that converts an infrared signal into a color signal.
上記のように構成された移動体識別装置においては、通
路上を歩行または走行する移動体1として例えば人体や
車輌などに装着された赤外線光源2からは、例えば赤外
線レーザを用いて上部空間の広い覆域に厘り可視光(波
長390〜750nm>に隣接した波長の近赤外線(波
長0.75〜2.53rn)を放射する。ヘリコプタな
どに搭載され空間に位置する受光部旦は移動体1の方向
を指向し、近赤外線の受光と共に自然光の内可視光によ
る周囲の風景に関する光学情報を同時に受光する。受光
部旦の入力即ちCCDカメラ7の前方には近赤外線なら
びに透過率が調節される可視光の光学フィルタ4が設け
られている。In the moving object identification device configured as described above, an infrared light source 2 attached to, for example, a human body or a vehicle as a moving object 1 walking or running on a passage uses, for example, an infrared laser to identify a vehicle with a wide upper space. It emits near-infrared rays (wavelength 0.75-2.53rn) with a wavelength adjacent to visible light (wavelength 390-750nm). The near-infrared rays and the transmittance are adjusted at the input of the light-receiving section, that is, in front of the CCD camera 7. An optical filter 4 for visible light is provided.
第2図は光学フィルタ分光特性の一例を示し、4.5.
6.7は上記実施例と同一であり、光学フィルタ4とし
て所定波長の光を透過し他の波長の光を反射する干渉フ
ィルタ即ち光学的なミラーを使用したとき、赤外線を透
過し可視光の透過率は光学フィルタ4の法線方向と可視
光とのなす入射角により調節される。FIG. 2 shows an example of optical filter spectral characteristics, and 4.5.
6.7 is the same as the above embodiment, and when an interference filter, that is, an optical mirror that transmits light of a predetermined wavelength and reflects light of other wavelengths is used as the optical filter 4, it transmits infrared rays and reflects visible light. The transmittance is adjusted by the angle of incidence between the normal direction of the optical filter 4 and visible light.
■は赤外入射光、■は可視入射光、■は赤外透過光、■
は可視反射光、θは光学フィルタ4の法線方向と入射光
とのなす入射角を示しており、
平行入射する赤外入射光■と可視入射光■が駆動部5の
制御により入射角θ=45°をなす光学フィルタ4に加
わると、近赤外線は90%透過率の赤外透過光■となり
、可視光は光学フィルタ4にて殆んど反射されて可視反
射光■となり透過できない。透過光は光学レンズ6を経
てCCDカメラ7にて受光される。■ is infrared incident light, ■ is visible incident light, ■ is infrared transmitted light, ■
indicates the visible reflected light, and θ indicates the angle of incidence between the normal direction of the optical filter 4 and the incident light, and the parallel incident infrared incident light ■ and the visible incident light ■ are controlled by the drive unit 5 to adjust the incident angle θ. When applied to the optical filter 4 having an angle of =45°, the near-infrared light becomes infrared transmitted light (2) with a transmittance of 90%, and most of the visible light is reflected by the optical filter 4 and becomes visible reflected light (2), which cannot be transmitted. The transmitted light passes through an optical lens 6 and is received by a CCD camera 7.
第3図は光学フィルタ分光特性の他の一例を示し、4.
5.6.7、■、■、■、■、θは上記実施例と同一で
あり、
■は光学フィルタ4を透過する可視透過光を示す、
平行入射する赤外入射光■と可視入射光■が加えられ、
駆動部5により連続またはステップ状に入射角が変えら
れるフィルタ4の入射角をθく45°に調節すると、光
学フィルタ4から赤外透過光■は上記と同様に透過され
、可視光の一部が可視透過光■として透過される。FIG. 3 shows another example of the optical filter spectral characteristics, and 4.
5.6.7, ■, ■, ■, ■, and θ are the same as in the above example, and ■ indicates visible transmitted light that passes through the optical filter 4. Parallel incident infrared incident light ■ and visible incident light ■ is added,
When the incident angle of the filter 4, whose incident angle is changed continuously or stepwise by the drive unit 5, is adjusted to 45 degrees by θ, the infrared transmitted light ■ is transmitted from the optical filter 4 in the same manner as above, and part of the visible light is is transmitted as visible transmitted light ■.
第4図は光学フィルタの周波数特性の一例を示し、入射
角θく45°において、近赤外線は可視光と波長が隣接
しているので、光学フィルタ4からは透過率90%の近
赤外透過光とフィルタの遮断域近傍の波長の可視光から
は透過率10〜20%の可視透過光■として出力される
。Figure 4 shows an example of the frequency characteristics of an optical filter. At an incident angle of 45°, near-infrared light is adjacent in wavelength to visible light, so near-infrared light is transmitted from optical filter 4 with a transmittance of 90%. Visible light having a wavelength near the cutoff range of the light and filter is output as visible transmitted light (2) with a transmittance of 10 to 20%.
入射角θ=45°においては可視透過光■は殆んど出力
されない。At the incident angle θ=45°, almost no visible transmitted light (3) is output.
光学フィルタ4の入射角θを例えばOoから45°の間
の5段階に駆動部により制御を行うと、可視光の透過率
が調節されるので、赤外線と可視光の比率を順次変える
ことができる。When the incident angle θ of the optical filter 4 is controlled in five stages, for example from Oo to 45°, by the drive unit, the transmittance of visible light is adjusted, so the ratio of infrared rays and visible light can be successively changed. .
第5図は光学フィルタ出力の一例を示し、光学フィルタ
4から出力される一部レベルの赤外線と光学フィルタ4
の透過率に依存する可視光は所定比率にて出力される。FIG. 5 shows an example of the optical filter output, in which a certain level of infrared rays output from the optical filter 4 and the optical filter 4
Visible light that depends on the transmittance of is output at a predetermined ratio.
フィルタ4出力は共に受光レベルに応じて電気信号への
変換を行う光学変換部と電気信号転送のための走査回路
を備えたCCDカメラ7へ加えられる。The outputs of the filter 4 are both applied to a CCD camera 7 equipped with an optical conversion section that converts into an electrical signal according to the received light level and a scanning circuit for transferring the electrical signal.
CCDカメラ7から出力される転送信号はJ外線と可視
光とのレベル比率を著しく大きくズきるので、モニタ9
の表示映像が白黒濃淡に1行われるとき、映像のコント
ラストが顕著にyなるので赤外線が容易に検知され、赤
外線光湧2即ち移動体1が明瞭に識別できる。The transfer signal output from the CCD camera 7 has a significantly higher level ratio between the J external line and the visible light, so the monitor 9
When the displayed image is displayed in black and white, the contrast of the image is markedly y, so that infrared rays can be easily detected, and the infrared light source 2, that is, the moving object 1 can be clearly identified.
更に駆動部5からの制御により光学フィル64の入射角
を変えて可視光の透過率を調節すイと、風景が適正輝度
にて表示され、移動体1q識別が一層明瞭に且つ常時確
実に行えて、移莞体1としての人体または車輌などの移
動経路4とが正しく把握できる。Furthermore, when the transmittance of visible light is adjusted by changing the incident angle of the optical filter 64 under control from the drive unit 5, the scenery is displayed with appropriate brightness, and the identification of the moving object 1q can be performed more clearly and always reliably. Thus, the moving route 4 of the moving body 1 such as a human body or a vehicle can be accurately grasped.
CCDカメラ7の出力を擬似カラー表示同右8を介して
カラー表示用モニタ9へ加えると、風景は上記のとおり
白黒表示されるが、赤外輻は所定のカラー例えば赤色に
て表示され移動側1の識別が一層確実になる。When the output of the CCD camera 7 is applied to the color display monitor 9 via the pseudo-color display 8, the scenery is displayed in black and white as described above, but the infrared radiation is displayed in a predetermined color, for example, red. identification becomes more reliable.
赤外線光源2から放射される赤外線レーザ習へは連続放
射の他に、1秒間隔または2秒間隔にて動作するコード
変調された断続信号とすることにより、移動体1の識別
は更に一層確実に行える。In addition to continuous radiation, the infrared laser beam emitted from the infrared light source 2 is a code-modulated intermittent signal that operates at 1-second or 2-second intervals, making identification of the moving object 1 even more reliable. I can do it.
[発明の効果コ
この発明は以上説明したとおり、赤外線に近赤外線を使
用し、可視光の透過率を変えて赤外線と可視光の受光レ
ベルの比率を調節する光学フィルタならびに光学フィル
タの入射角を制御する駆動部を設ける簡単な構造により
、互いに波長が隣接した赤外線と可視光の受光レベルの
比率が調節でき、表示映像上のコントラストが顕著にな
ると共に装置の絞りを開き最大感度で使用できるため移
動体が常時確実に識別できる。[Effects of the Invention] As explained above, this invention uses an optical filter that uses near-infrared rays as infrared rays and adjusts the ratio of the reception level of infrared rays and visible light by changing the transmittance of visible light, and the incident angle of the optical filter. With a simple structure that includes a control drive unit, the ratio of the reception levels of infrared and visible light, which have adjacent wavelengths, can be adjusted, which increases the contrast on the displayed image and allows the device to be used at maximum sensitivity by opening the aperture. Moving objects can be reliably identified at all times.
移動体は周囲の風景と重畳表示されるのでその位置なら
びに移動経路が迅速且つ正確に把握できる。Since the moving object is displayed superimposed on the surrounding scenery, its position and movement route can be quickly and accurately grasped.
コード変調された赤外線を用いることにより移動体の識
別が更に一層確実にできるという効果がある。The use of code-modulated infrared rays has the effect that mobile objects can be identified even more reliably.
【図面の簡単な説明】
第1図はこの発明の一実施例を示すブロック図、第2図
は光学フィルタ分光特性の一例、第3図は光学フィルタ
分光特性の他の一例、第4図は光学フィルタの周波数特
性の一例、第5図は光学フィルタ出力の一例、第6図は
従来の移動体識別装置のブロック図、第7図は光調部器
出力の受光レベルの一例である。
図において、1は移動体、2は赤外線光源、旦は受光部
、4は光学フィルタ、5は駆動部、6は光学レンズ、7
はCCDカメラ、θは入射角である。
なお各図中同一符号は同一または相当部分を示す。
特許出願人 株式会社 東京計器特許出願人
株式会社 テクノポート第1図
第2図
物動体
赤9rm原
受光部
光学フィルタ
腰β倉力名8
光字レフス゛
CCDカメラ
入制角
第3図
第4図
第5図
第6図
第7図
→′S長[Brief Description of the Drawings] Fig. 1 is a block diagram showing an embodiment of the present invention, Fig. 2 is an example of the spectral characteristics of an optical filter, Fig. 3 is another example of the spectral characteristics of the optical filter, and Fig. 4 is a block diagram showing an embodiment of the present invention. An example of the frequency characteristics of an optical filter, FIG. 5 is an example of the output of the optical filter, FIG. 6 is a block diagram of a conventional moving object identification device, and FIG. 7 is an example of the light reception level of the light adjustment device output. In the figure, 1 is a moving body, 2 is an infrared light source, 1 is a light receiving section, 4 is an optical filter, 5 is a drive section, 6 is an optical lens, and 7
is a CCD camera, and θ is the incident angle. Note that the same reference numerals in each figure indicate the same or corresponding parts. Patent applicant Tokyo Keiki Co., Ltd. Patent applicant
Technoport Co., Ltd. Fig. 1 Fig. 2 Object/Animal Red 9rm Original light receiving section Optical filter Waist β Kura Rikina 8 Optical reflex CCD camera Entry angle Fig. 3 Fig. 4 Fig. 5 Fig. 6 Fig. 7 →' S length
Claims (3)
射による可視光をCCDカメラにて受光し表示器にて表
示される映像上の移動体を識別する移動体識別装置にお
いて、 移動体に装着され空間の広い覆域に亙り連続信号または
コード変調信号の何れか一方の赤外線を放射する赤外線
光源と、所定入斜角において赤外線を透過し可視光が遮
断され入射角を変えると可視光の一部が透過される上記
CCDカメラの前方に配設された光学フィルタと、上記
光学フィルタへの赤外線の入射角を調節する駆動部とを
備え赤外線と可視光の受光レベルの比率が調節できるこ
とを特徴とする移動体識別装置。(1) A mobile object identification device that uses a CCD camera to receive infrared rays emitted from a moving object on the ground and visible light reflected from natural light to identify a moving object on an image displayed on a display. An infrared light source that is mounted and emits infrared rays as either a continuous signal or a code modulated signal over a wide coverage area of space, and an infrared light source that transmits infrared rays at a predetermined angle of incidence and blocks visible light, and that changes the visible light when the angle of incidence is changed. The present invention includes an optical filter disposed in front of the CCD camera through which a portion of the infrared rays is transmitted, and a drive unit that adjusts the angle of incidence of infrared rays on the optical filter, so that the ratio of the reception level of infrared rays and visible light can be adjusted. Characteristic mobile object identification device.
別装置。(2) The mobile object identification device according to claim 1, wherein the infrared rays are near infrared rays.
せる光学的なミラーである請求項1記載の移動体識別装
置。(3) The moving object identification device according to claim 1, wherein the optical filter is an optical mirror that transmits or reflects light of a specific wavelength.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2128860A JPH0424590A (en) | 1990-05-18 | 1990-05-18 | Identification device for moving object |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2128860A JPH0424590A (en) | 1990-05-18 | 1990-05-18 | Identification device for moving object |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH0424590A true JPH0424590A (en) | 1992-01-28 |
Family
ID=14995161
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2128860A Pending JPH0424590A (en) | 1990-05-18 | 1990-05-18 | Identification device for moving object |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0424590A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0694451A (en) * | 1992-09-11 | 1994-04-05 | Kajima Corp | Method and apparatus to detect approach of object from moving body |
JP2011203159A (en) * | 2010-03-26 | 2011-10-13 | Nec Corp | Infrared imaging device, and display method of infrared image |
US9709387B2 (en) | 2012-11-21 | 2017-07-18 | Mitsubishi Electric Corporation | Image generation device for acquiring distances of objects present in image space |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3681608A (en) * | 1971-03-17 | 1972-08-01 | Us Navy | Laser beam receiver having a high signal to noise ratio |
JPS5275601A (en) * | 1975-12-22 | 1977-06-24 | Fujitsu Ltd | Multiispectrum scanner |
US4121102A (en) * | 1976-07-27 | 1978-10-17 | Kilo Corporation | Object identification system |
-
1990
- 1990-05-18 JP JP2128860A patent/JPH0424590A/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3681608A (en) * | 1971-03-17 | 1972-08-01 | Us Navy | Laser beam receiver having a high signal to noise ratio |
JPS5275601A (en) * | 1975-12-22 | 1977-06-24 | Fujitsu Ltd | Multiispectrum scanner |
US4121102A (en) * | 1976-07-27 | 1978-10-17 | Kilo Corporation | Object identification system |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0694451A (en) * | 1992-09-11 | 1994-04-05 | Kajima Corp | Method and apparatus to detect approach of object from moving body |
JP2011203159A (en) * | 2010-03-26 | 2011-10-13 | Nec Corp | Infrared imaging device, and display method of infrared image |
US9709387B2 (en) | 2012-11-21 | 2017-07-18 | Mitsubishi Electric Corporation | Image generation device for acquiring distances of objects present in image space |
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