JPH0424424Y2 - - Google Patents
Info
- Publication number
- JPH0424424Y2 JPH0424424Y2 JP9506984U JP9506984U JPH0424424Y2 JP H0424424 Y2 JPH0424424 Y2 JP H0424424Y2 JP 9506984 U JP9506984 U JP 9506984U JP 9506984 U JP9506984 U JP 9506984U JP H0424424 Y2 JPH0424424 Y2 JP H0424424Y2
- Authority
- JP
- Japan
- Prior art keywords
- light emitting
- emitting element
- mirror
- reference direction
- mirrors
- 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.)
- Expired
Links
- 238000001514 detection method Methods 0.000 claims description 12
- 239000002131 composite material Substances 0.000 claims description 4
- 150000001875 compounds Chemical class 0.000 description 5
- 230000003287 optical effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 1
Landscapes
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
- Optical Elements Other Than Lenses (AREA)
- Burglar Alarm Systems (AREA)
Description
【考案の詳細な説明】
「産業上の利用分野」
本考案は複合凹面鏡により広い視野方向を検知
できるようにした受動型赤外線検知装置の構造に
関するものである。[Detailed Description of the Invention] "Industrial Application Field" The present invention relates to the structure of a passive infrared detection device that can detect a wide field of view using a compound concave mirror.
「従来の技術」
従来、多数の単位反射鏡を凹面に沿つて配列し
た複合凹面鏡のほゞ焦点位置に赤外線検出素子を
配置して放射状の検出方向を持たせるようにした
赤外線検知装置に於ては、その複合凹面鏡の基準
方向を知る方法としては赤外線検出素子の位置又
は近傍に発光素子を置き、その反射光を見ること
によつて行なつている。第２図は従来のこの種受
動型赤外線検出装置の光学系を説明する平面図
で、１は赤外線検出素子、２は単位反射鏡（以下
鏡という）、Ａ，Ｂ…Ｊ，Ｋを凹面３に沿つて配
列した複合凹面鏡、４は発光素子である。反射鏡
２の基準方向（視野方向の中心で、Ｆ−１−ｆを
結ぶ方向）を知る方法は、赤外線検出素子１の位
置又は近傍に置いた発光素子４の反射光ａ，ｂ…
ｊ，ｋを、各鏡の指向する方向から見て、発光素
子４からの光が鏡Ｆによつて見える位置を求める
ことによるが、鏡Ｆの反射光ｆを見ても隣の鏡Ｅ
又はＧの反射光ｅ又はｇを見てもいづれも１ケ所
光つて見えるので、どの鏡の反射光を見ているの
か区別できない。``Prior Art'' Conventionally, an infrared detection device has a radial detection direction by arranging an infrared detection element almost at the focal point of a compound concave mirror in which a large number of unit reflection mirrors are arranged along a concave surface. The method of determining the reference direction of the compound concave mirror is to place a light emitting element at or near the infrared detection element and observe the reflected light. FIG. 2 is a plan view illustrating the optical system of a conventional passive infrared detection device of this kind, in which 1 is an infrared detection element, 2 is a unit reflecting mirror (hereinafter referred to as mirror), and A, B...J, K are concave surfaces 3. 4 is a light emitting element. The method of knowing the reference direction of the reflecting mirror 2 (the direction connecting F-1-f at the center of the viewing direction) is by checking the reflected light a, b... of the light emitting element 4 placed at or near the infrared detection element 1.
j, k from the direction in which each mirror points, and find the position where the light from the light emitting element 4 is seen by the mirror F.
Or, even if you look at the reflected light e or g of G, you will see that it is shining in one place, so you cannot distinguish which mirror's reflected light you are looking at.
このような状態で反射鏡２の基準方向を知るに
は、反射光ａ，ｂ…ｊ，ｋを全て見るように移動
して全反射光の幅から基準方向を知るか、両端の
反射光ａ又はｋより中心反射光ｆまで数えて基準
方向を知るか等の手数を必要としていた。 To know the reference direction of the reflecting mirror 2 in such a state, you can either move so that you can see all of the reflected lights a, b...j, k and find out the reference direction from the width of the total reflected light, or Alternatively, it is necessary to count the central reflected light f from k to know the reference direction.
「考案が解決しようとする問題点」
このように複合凹面鏡２の基準方向を知るため
の作業には時間がかかり又誤差も大きくなる欠点
があり、この点が本考案の解決しようとする問題
点である。``Problem that the invention attempts to solve'' As described above, the task of determining the reference direction of the compound concave mirror 2 has the disadvantage that it takes time and the error is large, and this point is the problem that the invention aims to solve. It is.
「問題点を解決するための手段」
本考案はこの問題を解決するために複合凹面鏡
２の基準方向に発光素子４の光を反射する鏡を複
数設けその配置を新規に考案して、他の方向の反
射光と識別し易いよいにすることにより基準方向
を確実に短時間で検出できるようにしたものであ
る。以下図面について詳細に説明する。"Means for Solving the Problem" In order to solve this problem, the present invention provides a plurality of mirrors that reflect the light of the light emitting element 4 in the reference direction of the compound concave mirror 2, and devises a new arrangement of the mirrors. The reference direction can be reliably detected in a short time by making it easy to distinguish the direction from the reflected light. The drawings will be explained in detail below.
「実施例」
第１図は本考案の実施例を説明するための光学
系構造の平面図である。Embodiment FIG. 1 is a plan view of an optical system structure for explaining an embodiment of the present invention.
１は赤外線検知素子、４は発光素子、５は複合
凹面鏡でその凹面６に沿つて鏡Ａ〜Ｄ，Ｆ１，
Ｅ，Ｇ，Ｆ２，Ｈ〜Ｋを順次配置して構成してい
るが、第２図の鏡Ｆに対応する鏡がＦ１，Ｆ２と
複数、しかも連続しない位置に設けられている。
この鏡Ｆ１，Ｆ２は第２図における鏡Ｆを２分し
たもので、その面は同方向で基準方向を向いてい
て、正面から見てそれぞれ鏡Ｅの左隣および鏡Ｇ
の右隣に配置されている。 1 is an infrared detecting element, 4 is a light emitting element, 5 is a composite concave mirror, and along the concave surface 6 are mirrors A to D, F1,
Although E, G, F2, and H to K are sequentially arranged, a plurality of mirrors F1 and F2 corresponding to mirror F in FIG. 2 are provided at non-consecutive positions.
Mirrors F1 and F2 are mirrors F1 and F2 in FIG.
is located to the right of the
赤外線検知素子１と発光素子４は検知方向の視
野角度に応じて反射鏡２の焦点位置近くに配置さ
れている。 The infrared detecting element 1 and the light emitting element 4 are arranged near the focal point of the reflecting mirror 2 depending on the viewing angle in the detection direction.
「作用」
第３図は第１図より遠方における反射光ｅ，
f1，f2，ｇの関係を示す図である。"Effect" Figure 3 shows the reflected light e at a farther distance than in Figure 1,
FIG. 3 is a diagram showing the relationship between f 1 , f 2 , and g.
これらの図面を使つて本考案の作用を説明す
る。 The operation of the present invention will be explained using these drawings.
発光素子４からの各反射光は広がりをもつてお
り、反射光f1，f2の広がりは隣りあつた鏡ＥとＦ
１又はＦ２とＧの反射光角度ほど広くないので、
ある程度離れた位置では反射光ｇとf1又は反射光
f2とｅは重なることはなく、この部分は暗く見え
る。 Each reflected light from the light emitting element 4 has a spread, and the spread of the reflected lights f 1 and f 2 is the same as that of the adjacent mirrors E and F.
Since it is not as wide as the reflected light angle of 1 or F2 and G,
At a certain distance, reflected light g and f 1 or reflected light
f 2 and e do not overlap, and this part appears dark.
反射光f1とf2は互に重なり合い第３図の斜視部
の位置で見る限り鏡Ｆ１と鏡Ｆ２の２ケ所が光つ
て見える。 The reflected lights f 1 and f 2 overlap with each other, and as far as the perspective view of FIG. 3 is concerned, the two mirrors F1 and F2 appear to be shining.
従つて第３図の距離で左から右へ域は右から左
へ移動して複合凹面鏡２の方向を見れば、反射光
ｇとf1の間および反射光f2とｅの間にはそれぞれ
暗部が見え、反射光f1とf2の重なり部分では２ケ
所光つて見え、２ケ所の光の中心方向が実際の基
準方向であつて、他の鏡の方向ではそれぞれ１ケ
所光つて見えるのと容易に識別することができ
る。 Therefore, if the area moves from left to right at the distance shown in FIG . You can see the dark area, and in the overlapping part of the reflected lights f 1 and f 2 , it appears to be shining in two places, and the direction of the center of the two lights is the actual reference direction, and in the direction of the other mirrors, it appears to be shining in one place each. can be easily identified.
「考案の効果」
以上説明したように本考案によれば、基準方向
の鏡を複数に分割して所定の間隔に配置すること
により、基準方向と他方向とを容易に識別でき
る。従つて侵入監視等の装置の裾付調整において
主要目標に基準方向を合せる作業が正確かつ容易
となるもので性能上および取付作業上の効果が大
きい。"Effects of the Invention" As explained above, according to the present invention, by dividing the reference direction mirror into a plurality of parts and arranging them at predetermined intervals, the reference direction and other directions can be easily distinguished. Therefore, when adjusting the hem of a device such as an intrusion monitor, the work of aligning the reference direction with the main target becomes accurate and easy, which has great effects in terms of performance and installation work.
第１図は本考案の実施例を説明するための光学
系構造の平面図、第２図は従来の受動型赤外線検
出装置の光学系を説明する平面図、第３図は第１
図より遠方における反射光ｅ，f1，f2，ｇの関係
を示す図である。
１……赤外線検知素子、２，５……複合凹面
鏡、３，６……凹面、４……発光素子、Ａ，Ｂ〜
Ｊ，Ｋ，Ｆ１，Ｆ２……単位反射鏡（鏡）、ａ，
ｂ〜ｊ，ｋ，f1，f2……反射鏡。
FIG. 1 is a plan view of the optical system structure for explaining an embodiment of the present invention, FIG. 2 is a plan view for explaining the optical system of a conventional passive infrared detection device, and FIG.
It is a diagram showing the relationship between reflected lights e, f 1 , f 2 , and g at a distance from the figure. 1...Infrared detection element, 2, 5...Composite concave mirror, 3,6...Concave surface, 4...Light emitting element, A, B~
J, K, F1, F2...Unit reflecting mirror (mirror), a,
b to j, k, f 1 , f 2 ... reflecting mirrors.
Claims (1)
凹面鏡のほぼ焦点位置に置かれた赤外線検知素子
で視野方向からの赤外線を検知する装置におい
て、前記赤外線検知素子の近傍に発光素子を設
け、上記複合凹面鏡の連続しない単位反射鏡の少
なくとも二枚が上記発光素子からの光を同一の基
準方向に反射するように配置されたことを特徴と
する受動型赤外線検知装置。 In a device for detecting infrared rays from a viewing direction using an infrared detecting element placed approximately at the focal point of a composite concave mirror in which a large number of unit reflecting mirrors are arranged along a concave surface, a light emitting element is provided near the infrared detecting element, and the above-mentioned A passive infrared detection device characterized in that at least two discontinuous unit reflecting mirrors of the composite concave mirror are arranged so as to reflect light from the light emitting element in the same reference direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9506984U JPS6110529U (en) | 1984-06-25 | 1984-06-25 | Passive infrared detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9506984U JPS6110529U (en) | 1984-06-25 | 1984-06-25 | Passive infrared detection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6110529U JPS6110529U (en) | 1986-01-22 |
| JPH0424424Y2 true JPH0424424Y2 (en) | 1992-06-09 |
Family
ID=30654020
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9506984U Granted JPS6110529U (en) | 1984-06-25 | 1984-06-25 | Passive infrared detection device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6110529U (en) |
-
1984
- 1984-06-25 JP JP9506984U patent/JPS6110529U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6110529U (en) | 1986-01-22 |
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