JPH01269077A - Light wave warning device - Google Patents

Light wave warning device

Info

Publication number
JPH01269077A
JPH01269077A JP9856288A JP9856288A JPH01269077A JP H01269077 A JPH01269077 A JP H01269077A JP 9856288 A JP9856288 A JP 9856288A JP 9856288 A JP9856288 A JP 9856288A JP H01269077 A JPH01269077 A JP H01269077A
Authority
JP
Japan
Prior art keywords
band
light
infrared rays
signals
detection
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
Application number
JP9856288A
Other languages
Japanese (ja)
Inventor
Hiromoto Kuroshima
黒島 大元
Kimihiko Satake
佐竹 公彦
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by NEC Corp filed Critical NEC Corp
Priority to JP9856288A priority Critical patent/JPH01269077A/en
Publication of JPH01269077A publication Critical patent/JPH01269077A/en
Pending legal-status Critical Current

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  • Burglar Alarm Systems (AREA)
  • Fire-Detection Mechanisms (AREA)
  • Emergency Alarm Devices (AREA)

Abstract

PURPOSE:To reduce the wrong information rate of the title device by discriminating presence/absence of a flying object radiating infrared rays from the presence/absence of signals of detecting elements which respectively detect infrared rays of 1mum, 3-5mum, and 8-14mum bands in accordance with a previously specified reference. CONSTITUTION:A multi-wavelength detector 7 provided with 1mum band detecting element 11 and 3-5mum band detecting element 14 and another multi-wavelength detector 8 provided with another 1mum band detecting element 11 and 8-14mum band detecting element 15 are provided to the title warning device. Output signals of the elements 11, 14, 11, and 15 are sent to a signal processing section after they are respectively amplified by amplifiers 17-20. The signal processing section discriminates whether the signals are produced by sunlight, deceptive flare, or infrared rays in accordance with the presence/absence of the signals and when it is discriminated that the signals are produced by infrared rays, issues a warning signal. In case the source of the signals is not certain, the section is caused not to issue the warning signal. Therefore, the wrong information rate of this device can be reduced.

Description

【発明の詳細な説明】 (産業上の利用分野) 本発明は光波警報装置に関し、特に飛翔する目標の発す
る赤外線の波長帯のエネルギーを信号として利用して目
標の有無を検知して警報を発生する光波警報装置に関す
る。
[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a light wave warning device, and in particular uses energy in the infrared wavelength band emitted by a flying target as a signal to detect the presence or absence of a target and generate a warning. This invention relates to a light wave warning device.

(従来の技術) 従来、この種の光波警報装置は、通常1μm帯の光検知
器を使用した光波警報装置、3〜5μm帯の光検知器を
使用した光波警報装置、8〜14μm帯の光検知器を使
用した光波警報装置というように各波長帯毎にそれぞれ
独立した別個の装置となっていた。
(Prior art) Conventionally, this type of light wave alarm device is usually a light wave alarm device using a photodetector in the 1 μm band, a light wave alarm device using a photodetector in the 3 to 5 μm band, and a light wave alarm device using a photo detector in the 8 to 14 μm band. Each wavelength band had its own separate device, such as a light wave warning device using a detector.

(発明が解決しようとする課題) 上述した従来の光波警報装置は、波長毎に独立装置とな
っているので、使用した装置の波長帯の目標しか検知で
きず、これを避けるためには、各波長毎の光波警報装置
をすべて備える必要があり、使用上不適な装備状態とな
り実際上併用できる場合はほとんどないという欠点があ
る。
(Problems to be Solved by the Invention) The conventional light wave alarm device described above is an independent device for each wavelength, so it can only detect targets in the wavelength band of the device used. There is a drawback that it is necessary to have all the light wave alarm devices for each wavelength, which makes the equipment unsuitable for use, and there are almost no cases where they can be used together.

さらに、検知に使用する波長帯はそれぞれがひとつの波
長帯であるところから、他の波長帯との信号と比較照合
してその結果を処理する手段を持てないため検知した信
号は全て目標と判断せざるを得す、例えば太陽光による
影響、欺まん等による人工光の影響を除去して誤報の少
ない警報を発することができないという欠点がある。
Furthermore, since each wavelength band used for detection is a single wavelength band, there is no way to compare signals with other wavelength bands and process the results, so all detected signals are judged to be targets. However, there is a drawback in that it is not possible to issue an alarm with fewer false alarms by removing the influence of sunlight or artificial light due to deception.

本発明の目的は上述した欠点を除去し、同時に3波長帯
の赤外線を検知し、誤報率を著しく減少した小型軽量の
光波警報装置を提供することにある。
SUMMARY OF THE INVENTION An object of the present invention is to eliminate the above-mentioned drawbacks, and to provide a small and lightweight light wave alarm device that simultaneously detects infrared rays in three wavelength bands and significantly reduces the false alarm rate.

(課題を解決するための手段) 本発明は、上記の目的を達成するために次の手段構成を
有する。
(Means for Solving the Problems) The present invention has the following means configuration to achieve the above object.

即ち、本発明の光波警報装置は、1μm波長帯の赤外線
を検知する1μmμm検光検知と; 3〜5μm波長帯
の赤外線を検知する3〜5μm帯光検知平光検知 8〜
14μm波長帯の赤外線を検知する8〜14μm帯光検
知手段と; 前記各光検知手段からの検知信号を受けて
各検知信号の有無の状況に対し予め定められた基準によ
り赤外線を発する飛翔目標の存否を判断し存在する場合
に警報を発生する信号処理手段と; を具備することを
特徴とするものである。
That is, the light wave alarm device of the present invention includes: 1 μm μm photometric detection for detecting infrared rays in the 1 μm wavelength band; 3-5 μm light detection and flat light detection for detecting infrared rays in the 3-5 μm wavelength band;
8-14 μm band light detection means for detecting infrared light in the 14 μm wavelength band; and a flying target that receives detection signals from each of the light detection means and emits infrared light according to predetermined criteria for the presence or absence of each detection signal. The present invention is characterized by comprising: a signal processing means for determining the presence or absence and generating an alarm when the presence or absence of the air conditioner is present; and;

(作 用) 以下、上記手段構成を有する本発明の光波警報装置の作
用を説明する。
(Function) Hereinafter, the function of the light wave alarm device of the present invention having the above means configuration will be explained.

一般に飛翔する物体は、次の2つの発熱によりそれに応
じた赤外線を放射している。
Generally, a flying object emits infrared rays due to the following two types of heat generation.

そのひとつは、飛翔することによって大気との摩擦を起
し、胴体等の構造物が発熱(いわゆる空力熱)するがこ
の発熱による飛翔体からの赤外線は8〜14μm帯に放
射が多いのが一般的である。
One of these is that flying causes friction with the atmosphere, which causes structures such as the fuselage to generate heat (so-called aerodynamic heat), and the infrared rays from the flying object due to this heat generally radiate mostly in the 8 to 14 μm band. It is true.

飛翔体が周囲の大気より温度が高くなり、飛翔体が放射
する赤外線が周囲の大気の放射する赤外線より強くなる
ことを利用して検知信号に利用する。しかしその放射量
が少ない、又、飛翔する物体は排気ガスを排出するのが
一般的であり、排気ガスは高温であって3〜5μm帯の
赤外線が特に多い、又、その排気口は高温であり、ここ
からの赤外線の放射も8〜14μm帯に多い、これ等の
赤外線の放射を検知信号に利用する。
When the temperature of a flying object becomes higher than that of the surrounding atmosphere, the infrared rays emitted by the flying object become stronger than the infrared rays emitted by the surrounding atmosphere, which is used for detection signals. However, the amount of radiation is small, and flying objects generally emit exhaust gas, and the exhaust gas is high temperature and has a lot of infrared rays in the 3 to 5 μm band, and the exhaust port is high temperature. There are many infrared rays emitted from these in the 8 to 14 μm band, and these infrared rays are used for detection signals.

一方、太陽光線は可視光から赤外光まで幅広い波長で放
射しており5μm帯までは充分な放射量を有している。
On the other hand, sunlight radiates in a wide range of wavelengths from visible light to infrared light, and has a sufficient amount of radiation up to the 5 μm band.

一方、フレア等の欺まんを行う装置も可視光から赤外光
まで幅広い波長で放射しており、5μm帯までは検知さ
れ得る放射量を有している。
On the other hand, deceptive devices such as flares emit light in a wide range of wavelengths, from visible light to infrared light, and have an amount of radiation that can be detected up to the 5 μm band.

以上要するに、目標とする飛翔体は、排気ガスを噴出し
て飛翔しているときには8〜14μm帯の赤外線と3〜
5μm帯の赤外線を放射し、ガス噴射を止め慣性で飛翔
しているときには8〜14μm帯の赤外線のみを放射し
ている。一方、太陽光やフレア等は3〜5μm帯の赤外
線と1μm帯の赤外線を放射する。
In summary, when a target projectile is flying and ejecting exhaust gas, the infrared rays in the 8-14 μm band and the 3-3 μm
It emits infrared rays in the 5 μm band, and only emits infrared rays in the 8 to 14 μm band when the gas injection is stopped and it is flying due to inertia. On the other hand, sunlight, flares, etc. emit infrared rays in the 3-5 μm band and infrared rays in the 1 μm band.

従って、8〜14μm帯の赤外線が検出された場合には
他の波長帯の検出の有無を問わず目標飛翔体が存在する
ものと判断できる。しかし、この8〜14μm帯の赤外
線はその放射量が少ないので遠方の飛翔体からは届きに
くい場合がありその場合には3〜5μm帯の赤外線のみ
が到達することになる。しかしながら、3〜5μm帯の
赤外線は太陽光やフレアからも放射されているので、3
〜5μm帯の赤外線の検出のみを以て飛翔体が存在する
と判断することはできない、ところが太陽光やフレア等
は、飛翔体が放射することのない1μm帯の赤外線を同
時に放射している。従って、3〜5μm帯の赤外線のみ
が検出されたときには飛翔体が存在すると判断できるが
、1μm帯の赤外線も同時に検出されたときには太陽光
あるいはフレアを捕捉していることは確かであるが飛翔
体の捕捉については不確かである。
Therefore, when infrared rays in the 8 to 14 μm band are detected, it can be determined that a target flying object exists regardless of whether or not other wavelength bands are detected. However, since the amount of radiation of infrared rays in the 8 to 14 μm band is small, it may be difficult for distant flying objects to reach the infrared rays, in which case only infrared rays in the 3 to 5 μm band will reach them. However, infrared rays in the 3-5 μm band are also emitted from sunlight and flares, so
It is not possible to determine the presence of a flying object only by detecting infrared rays in the ~5 μm band; however, sunlight, flares, etc. simultaneously emit infrared rays in the 1 μm band, which flying objects do not emit. Therefore, when only infrared rays in the 3-5 μm band are detected, it can be determined that a flying object exists, but if infrared rays in the 1 μm band are also detected at the same time, it is certain that sunlight or flares have been captured, but there is no flying object. There is uncertainty about the capture of

本発明の警報装置は、1μm光検知手段、3〜5μm光
検知手段および8〜14μm光検知手段を有しておりそ
れぞれの波長帯の赤外線を同時に検知できる。各検知手
段から出力される検知信号は信号処理手段へ加えられる
。信号処理手段は他の検出信号があってもなくても8〜
14μm光の検知出力があったすべての場合と、8〜1
4μm光の検知出力がない場合で3〜5μm光のみが検
知された場合には目標飛翔体の存在を示す警報を発生す
るように処理し、一方、8〜14μm光の検知出力がな
い場合で、3〜5μm光と1μm光の両方が検知された
場合、1μm光のみが検知された場合および両方とも検
知されない場合には警報を発生しないように処理する。
The alarm device of the present invention has a 1 μm light detection means, a 3 to 5 μm light detection means, and an 8 to 14 μm light detection means, and can simultaneously detect infrared rays in each wavelength band. The detection signal output from each detection means is applied to the signal processing means. The signal processing means can perform 8 to 8 with or without other detection signals.
In all cases where there was a detection output of 14 μm light and in 8 to 1
If there is no detection output for 4μm light and only 3 to 5μm light is detected, an alarm indicating the presence of a target projectile is generated.On the other hand, if there is no detection output for 8 to 14μm light, , when both 3-5 μm light and 1 μm light are detected, when only 1 μm light is detected, and when both are not detected, processing is performed so as not to generate an alarm.

上記の各場合中、8〜14μm光の検知がなく、1μm
光および3〜5μm光の両方が検知された場合は太陽光
やフレアを捕捉していることは確がであるが同時に目標
をも捕捉しているが否かについては不確かであるため警
報を発生しないように処理している。その他の場合につ
いては飛翔体を捕捉した場合には警報を発し、飛翔体で
ない場合には警報を発しないという処理を確実に行って
いるので誤報率が低い。
In each of the above cases, there was no detection of 8-14 μm light, and 1 μm light was not detected.
If both light and 3-5μm light are detected, it is certain that sunlight or flares are being captured, but it is uncertain whether the target is also being captured, so an alarm will be generated. We are taking steps to prevent this from happening. In other cases, a warning is issued when a flying object is captured, and an alarm is not issued when it is not a flying object, so the false alarm rate is low.

以上説明したように、本発明の光波警報装置は1つの装
置内に1μmμm検光検知、3〜5μm帯光検知平光検
知〜14μm帯光検知手帯金検知、更に各検知手段から
の検知信号を受けて比較し目標とする飛翔体の存否を判
断する信号処理手段を設けたので、従来は、各波長帯毎
に別個独立の警報装置であり、飛翔体の存否を確実に判
断するには、これら3台の警報装置を用意し、それらの
警報状況から操作者が判断しなければならなかったこと
に較べ、小型軽量で誤報率が非常に低い光波警報装置と
なっている。
As explained above, the light wave alarm device of the present invention includes 1 μm μm light analysis detection, 3 to 5 μm band light detection, flat light detection to 14 μm band light detection, hand strap detection, and detection signals from each detection means. Conventionally, a separate alarm device was used for each wavelength band, and in order to reliably determine the presence or absence of a flying object, Compared to the case where these three alarm devices were prepared and the operator had to make a judgment based on their alarm conditions, the light wave alarm device is smaller and lighter and has a very low false alarm rate.

(実 施 例) 以下、本発明の光波警報装置の実施例を図面を参照して
説明する。
(Example) Hereinafter, an example of the light wave warning device of the present invention will be described with reference to the drawings.

第1図は本発明の一実施例のブロック図で、第2図は本
発明の最も重要な部分である第1図のセンサ部1を詳細
に示すブロック図、第3図は第1図の多波長検知器の一
例を示す構成図、第4図は本発明の光波警報装置を複数
個向きを異ならせてドーム23に実装した例の側面図で
ある。ドーム23は運搬体24に取り付けられている。
FIG. 1 is a block diagram of one embodiment of the present invention, FIG. 2 is a block diagram showing in detail the sensor section 1 of FIG. 1, which is the most important part of the present invention, and FIG. FIG. 4 is a configuration diagram showing an example of a multi-wavelength detector. FIG. 4 is a side view of an example in which a plurality of light wave alarm devices of the present invention are mounted in a dome 23 in different directions. Dome 23 is attached to carrier 24.

第1図に示す本発明の一実施例の構成はセンサ部1と信
号処理部2および電源部3からなる。
The configuration of an embodiment of the present invention shown in FIG. 1 includes a sensor section 1, a signal processing section 2, and a power supply section 3.

まず、本発明の最も重要な機能を有するセンサ部1につ
いて第2図により説明する。センサ部1は多波長検知器
7および同8を有する。多波長検知器7は1μmμm検
光検知素子113〜5μm帯光検知素光検知素子14容
器の中に封入され、クーラ16によって必要な温度に冷
却される。
First, the sensor section 1 having the most important function of the present invention will be explained with reference to FIG. The sensor section 1 has multi-wavelength detectors 7 and 8. The multi-wavelength detector 7 is enclosed in a container including a 1 μm μm photodetecting element 113 to a 5 μm band photodetecting element 14, and is cooled to a required temperature by a cooler 16.

また、1μm帯のエネルギーと3〜5μm帯のエネルギ
ーを分離するなめにフィルタ12が使用されている。
Further, a filter 12 is used to separate energy in the 1 μm band and energy in the 3 to 5 μm band.

一方、もうひとつの多波長検知器8は、1μmμm検光
検知素子11〜14μm帯光検知素子15が同一容器の
中に封入され、クーラ16′によって必要な温度まで冷
却される。1μm帯のエネルギーと8〜14μm帯のエ
ネルギーを分離するためにフィルタ13が使用されてい
る。
On the other hand, in the other multi-wavelength detector 8, a 1 .mu.m .mu.m photometric detection element 11 to 14 .mu.m band photodetection element 15 are sealed in the same container and cooled to a required temperature by a cooler 16'. A filter 13 is used to separate energy in the 1 μm band and energy in the 8 to 14 μm band.

窓4は、光波警報装置に光エネルギーを導くものであり
必要とする波長帯1μm〜14μmのエネルギーを通す
、窓4を通過した光エネルギーは集光レンズ5および同
6で集光され光検知素子に集光するが、集光レンズ5お
よび同6の光学的パラメータは各波長帯の光検知素子に
必要とされる波長帯の光エネルギーが集光するよう定め
られる。
The window 4 guides light energy to the light wave alarm device and passes energy in the required wavelength band of 1 μm to 14 μm.The light energy that passes through the window 4 is focused by condensing lenses 5 and 6 and sent to a photodetector element. The optical parameters of the condensing lenses 5 and 6 are determined so that the light energy in the wavelength band required by the photodetecting element in each wavelength band is condensed.

窓9および同10は多波長検知器7および同8のケース
に封入されている各光検知素子へ光エネルギーを封入す
るための窓である。各光検知素子からの出力信号は増幅
器17、同18ならびに増幅器19、同20で増幅され
て各波長帯の出力として信号処理部2へ送出される。
Windows 9 and 10 are windows for enclosing optical energy into each photodetecting element enclosed in the case of multi-wavelength detectors 7 and 8. The output signal from each photodetector element is amplified by amplifiers 17 and 18 and amplifiers 19 and 20, and sent to the signal processing section 2 as an output of each wavelength band.

信号処理部2は、こうして送出された信号出力を受けて
目標の存在を知らせる警報出力を発生してこれを表示器
その他のシステムに供給する。
The signal processing unit 2 receives the signal output thus sent out, generates an alarm output to notify the presence of the target, and supplies this to a display and other systems.

信号処理部2は、センサ部1とともにシステムの制御器
(図示せず)がら受ける制御信号によりその動作を制御
されつつ、がっ電源部3がら電源供給を受けつつ前記(
作用)の項で述べた信号処理を実施する。
The signal processing section 2 has its operation controlled by a control signal received from the system controller (not shown) together with the sensor section 1, and receives power supply from the power supply section 3 while performing the above-mentioned (
Execute the signal processing described in the section (Operation).

センサ部1で使われる多波長検知器7および同8は、第
3図のようなものでありaが窓9又は窓10であり、b
が1μmμm検光検知素子11り、Cがフィルタ12又
はフィルタ13であり、dが3〜5μm帯光検知素光検
知素子1414μm帯光検知素子15である。22は多
波長検知器7又は同8を構成している真空容器であり、
21はクーラ16又16′の冷媒である。
The multi-wavelength detectors 7 and 8 used in the sensor section 1 are as shown in FIG. 3, where a is window 9 or window 10, and b is
C is the filter 12 or filter 13, and d is the 3-5 μm band photodetecting element 1414 μm band photodetecting element 15. 22 is a vacuum container constituting the multi-wavelength detector 7 or 8;
21 is a refrigerant for the cooler 16 or 16'.

第4図は本発明の光波警報装置を9個その向きと異なら
せて1つのドーム23に実装したものの側面図である0
本発明の光波警報装置の窓4をこのように9個半球上に
並べると半円球を60”毎の方向で警報信号を出すこと
ができる。−殻内にはこれを飛翔体等の運搬体24に取
り付けて運用する。
FIG. 4 is a side view of one dome 23 in which nine light wave alarm devices of the present invention are mounted in different directions.
By arranging nine windows 4 of the light wave warning device of the present invention on a hemisphere like this, it is possible to issue an alarm signal in every 60” direction of the hemisphere. It is attached to the body 24 and operated.

(発明の効果) 以上説明したように、本発明の光波警報装置は1つの装
置内に1μmμm検光検知、3〜5μm帯光検知平光検
知〜14μm帯光検知手帯金検知、更に、各検知手段か
らの検知信号を受けて比較し目標とする飛翔体の存否を
判断する信号処理手段を設けたので、従来は、各波長毎
に別個の装置を準備して操作者が各装置の警報状況から
飛翔体の存否を判断しなければならなかったのに対し、
小型軽量で誤報率の非常に低い飛翔体警報を発すること
ができるという利点がある。
(Effects of the Invention) As explained above, the light wave alarm device of the present invention includes 1 μm μm light analysis detection, 3 to 5 μm light band detection, flat light detection to 14 μm light band detection, hand band detection, and further each detection. Conventionally, a signal processing means is provided to receive detection signals from the means and compare them to determine the presence or absence of a target flying object. In contrast, the presence or absence of a flying object had to be determined from
It has the advantage of being small and lightweight and capable of issuing a flying object warning with a very low false alarm rate.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は本発明の光波警報装置の実施例の基本構成を示
すブロック図、第2図はセンサ部の実施例の構成を示す
図、第3図は多波長検知器の構造図、第4図は本発明の
光波警報装置9個を向きを異ならせてドームに実装した
ものの側面図である。 1・・・・・・センサ部、 2・・・・・・信号処理部
、3・・・・・・電源部、 4・・・・・・窓、 5.
6・・・・・・集光レンズ、 7.8・・・・・・多波
長検知器、 9,10・・・・・・窓、 11・・・・
・・1μmμm検光検知素子12゜13・・・・・・フ
ィルタ、 14・・・・・・3〜5μm帯光検知素光検
知素子・・・・・・8〜14μm帯光検知素子、16.
16’・・・・・・クーラ、 17〜20・・・・・・
増幅器、 21・・・・・・冷媒、 22・・・・・・
真空容器、23・・・・・・ドーム、 24・・・・・
・運搬体。 代理人 弁理士  八 幡  義 博
FIG. 1 is a block diagram showing the basic configuration of an embodiment of the light wave alarm device of the present invention, FIG. 2 is a diagram showing the configuration of the sensor section, FIG. 3 is a structural diagram of a multi-wavelength detector, and FIG. The figure is a side view of nine light wave alarm devices of the present invention mounted in a dome in different directions. 1...Sensor section, 2...Signal processing section, 3...Power supply section, 4...Window, 5.
6...Condensing lens, 7.8...Multi-wavelength detector, 9,10...Window, 11...
...1 μm μm light analysis detection element 12゜13...Filter, 14...3 to 5 μm band light detection element Photodetection element...8 to 14 μm band light detection element, 16 ..
16'...Kura, 17~20...
Amplifier, 21... Refrigerant, 22...
Vacuum container, 23...Dome, 24...
・Transporter. Agent Patent Attorney Yoshihiro Hachiman

Claims (1)

【特許請求の範囲】[Claims] 1μm波長帯の赤外線を検知する1μm帯光検知手段と
;3〜5μm波長帯の赤外線を検知する3〜5μm帯光
検知手段と;8〜14μm波長帯の赤外線を検知する8
〜14μm帯光検知手段と;前記各光検知手段からの検
知信号を受けて各検知信号の有無の状況に対し予め定め
られた基準により赤外線を発する飛翔目標の存否を判断
し存在する場合に警報を発生する信号処理手段とを具備
することを特徴とする光波警報装置。
1 μm band light detection means for detecting infrared light in a 1 μm wavelength band; 3 to 5 μm light detection means for detecting infrared light in a 3 to 5 μm wavelength band; 8 to detect infrared light in an 8 to 14 μm wavelength band.
~14 μm band light detection means; upon receiving the detection signals from each of the light detection means, it is determined whether or not there is a flying target that emits infrared rays according to predetermined criteria based on the presence or absence of each detection signal, and if there is, an alarm is issued. 1. A light wave alarm device comprising a signal processing means for generating a signal.
JP9856288A 1988-04-21 1988-04-21 Light wave warning device Pending JPH01269077A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9856288A JPH01269077A (en) 1988-04-21 1988-04-21 Light wave warning device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9856288A JPH01269077A (en) 1988-04-21 1988-04-21 Light wave warning device

Publications (1)

Publication Number Publication Date
JPH01269077A true JPH01269077A (en) 1989-10-26

Family

ID=14223119

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9856288A Pending JPH01269077A (en) 1988-04-21 1988-04-21 Light wave warning device

Country Status (1)

Country Link
JP (1) JPH01269077A (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6176970A (en) * 1984-09-21 1986-04-19 Mitsubishi Electric Corp Infrared ray detecting device
JPS6146483B2 (en) * 1981-12-07 1986-10-14 Texaco Development Corp
JPS63305266A (en) * 1987-06-05 1988-12-13 Mitsubishi Electric Corp Target tracking apparatus

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6146483B2 (en) * 1981-12-07 1986-10-14 Texaco Development Corp
JPS6176970A (en) * 1984-09-21 1986-04-19 Mitsubishi Electric Corp Infrared ray detecting device
JPS63305266A (en) * 1987-06-05 1988-12-13 Mitsubishi Electric Corp Target tracking apparatus

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