JPS6177723A - Infrared-ray detecting device - Google Patents
Infrared-ray detecting deviceInfo
- Publication number
- JPS6177723A JPS6177723A JP59199901A JP19990184A JPS6177723A JP S6177723 A JPS6177723 A JP S6177723A JP 59199901 A JP59199901 A JP 59199901A JP 19990184 A JP19990184 A JP 19990184A JP S6177723 A JPS6177723 A JP S6177723A
- Authority
- JP
- Japan
- Prior art keywords
- fresnel lenses
- infrared
- circumferential direction
- detection device
- lens
- 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
- 238000001514 detection method Methods 0.000 claims description 33
- 238000005452 bending Methods 0.000 claims description 3
- 230000003287 optical effect Effects 0.000 claims 1
- 230000002093 peripheral effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 241000251730 Chondrichthyes Species 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 229920013716 polyethylene resin Polymers 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/18—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength
- G08B13/189—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems
- G08B13/19—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using infrared-radiation detection systems
- G08B13/193—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using infrared-radiation detection systems using focusing means
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
Description
【発明の詳細な説明】
[技術分野1
本発明は、複数の検知エリアを%iした赤外線検知装置
に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Technical Field 1] The present invention relates to an infrared detection device that has a plurality of detection areas in %i.
[’gl’景扶術j
従来、この種の赤外線検知装置としては、第11図に示
すように、放物面鏡20と!M数の平面鏡21とよりな
る集光手段2aを用いて複数の検知工l/アからの赤外
線を集光し、集光7くに配r!1された赤外線センサ3
にて検知するようにしたものがあったが、このような従
来例にあっては構造が複雑になるととらに、形状が大き
くなるという問題があった。そこで、上記問題点を解決
するために、第11図に示すように、複数のフレネルレ
ンズ1を平面的に配置した集光手段2bを用いたものが
考えられているが、このように、フレネルレンズ1を平
面的に配置した場合にあっては、検知エリアを広くでき
ないという問題があった。すなわち、フレネルレンズ1
の場合、光の入射角度が大きすぎると、反射などの彰1
によって殆ど集光されなくなるので、例えば、このよう
な赤外線検知装置を天井に設置した場合において、検知
エリアが真下方向に限定されてしまい、真下を中心に全
周に亘って検知エリアを設定することができないという
問題があった。['gl' Keifujutsu j Conventionally, as this type of infrared detection device, as shown in FIG. 11, a parabolic mirror 20 and! The infrared rays from the plurality of detection devices 1/a are collected using the condensing means 2a consisting of M number of plane mirrors 21, and distributed to the condensing unit 7! 1 infrared sensor 3
However, in such conventional examples, there was a problem that not only the structure became complicated but also the shape became large. Therefore, in order to solve the above problem, it has been considered to use a condensing means 2b in which a plurality of Fresnel lenses 1 are arranged in a plane as shown in FIG. When the lens 1 is arranged in a plane, there is a problem that the detection area cannot be widened. That is, Fresnel lens 1
In the case of
For example, if such an infrared detection device is installed on the ceiling, the detection area will be limited to the direction directly below, and it will be difficult to set the detection area around the entire circumference with the center directly below. The problem was that it was not possible.
[発明の目的]
本発明は上記の、貞に鑑みて為されたらのであり、第1
の目的とするところは、構造が簡単で、広い検知エリア
を有する赤外線検知装置を提供することにあり、第2の
目的とするところは、より小型の赤外線検知i!crI
tを提供することにある。[Object of the Invention] The present invention has been made in view of the above-mentioned principles.
The purpose of this is to provide an infrared detection device with a simple structure and a wide detection area, and the second purpose is to provide a smaller infrared detection i! crI
The aim is to provide the following.
[発明の開示1
(実施例1)
第1図はtA1発明の一実施例を示すものであり、円錐
台の傾斜した周面の全周に亘って複数のフレネルレンズ
1を配設するととらに、各フレネルレンズ1による集光
点Fを一致させて集光手段2を形成し、上記集光手段2
による集光点Fに焦電素子よりなる赤外線センサ3を配
置したものである。[Disclosure of the Invention 1 (Example 1) Fig. 1 shows an embodiment of the tA1 invention, in which a plurality of Fresnel lenses 1 are arranged over the entire circumference of the inclined circumferential surface of a truncated cone. , the condensing point F of each Fresnel lens 1 is aligned to form a condensing means 2, and the condensing means 2
An infrared sensor 3 made of a pyroelectric element is placed at a condensing point F.
なお、フレネルレンズ1は透明合成樹脂(ポリエチレン
樹脂)にて形成されている。Note that the Fresnel lens 1 is made of transparent synthetic resin (polyethylene resin).
いま、実施例にあっては、6個のフレネルレンズ1の傾
斜角が適当になるようにして円錐台の全周に亘って配設
しており、各フレネルレンズ1に対応する検知エリアA
1〜A6からの赤外線(例えば、人体から発する赤外線
)が集光点Fl:集光されている。この集光された赤外
線は赤外線センサ3にて検出され、赤外線センサ3の出
力に基いて警報手段あるいは扉開閉手段等の負荷載器が
駆動されるようになっている。この場合、各7し冬ルレ
ンX:1のレンズ面の相対角度が順次式なっているので
、各フレネルレンズ1の検知エリアA、〜A6が比較的
狭い化凹に限定されたものであっても、広い検知エリア
を得ることができ、監視範囲を大きく設定できることに
なる0例乏ば、この赤外線検知装置Xを天井に設置した
場合には、真下を中心として全周に亘って監視を行うこ
とがでさることになる。In the present embodiment, six Fresnel lenses 1 are arranged around the entire circumference of the truncated cone with appropriate inclination angles, and the detection area A corresponding to each Fresnel lens 1 is
Infrared rays from 1 to A6 (for example, infrared rays emitted from a human body) are focused at a focal point Fl:. This focused infrared light is detected by an infrared sensor 3, and based on the output of the infrared sensor 3, a load device such as an alarm means or a door opening/closing means is driven. In this case, since the relative angles of the lens surfaces of 7 and 1 are sequential, the detection areas A, to A6 of each Fresnel lens 1 are relatively narrow and limited to concave areas. Also, a wide detection area can be obtained and the monitoring range can be set large.In some cases, if this infrared detection device That's a big deal.
(実施例2)
第2図および第3図は他の実施例を示すもので、フレネ
ルレンズ1を多角錐台の傾斜した各周面に配設したもの
であり、集光手段2は複数のフレネルレンズ1が形成さ
れた1枚の扇形レンズ板1aを屈面して形成されており
、他の構成および動作は実施例1と同様である。なお、
実施例1においても、集光手段2を複数の7レネルレン
X1が形成とれた1枚の扇形レンズ板1aを湾曲して形
成しても良いことは言うまでもない。まだ、扇形レンズ
板1aの開き角(β゛)は円錐台あるいは多角錐台とな
るように組み立てり場合における周面の傾斜角が所定の
角度(所望の検知エリアが111られる角度)になるよ
うに設定される。(Embodiment 2) FIGS. 2 and 3 show another embodiment in which a Fresnel lens 1 is disposed on each inclined circumferential surface of a truncated polygonal pyramid, and the condensing means 2 has a plurality of It is formed by bending one fan-shaped lens plate 1a on which the Fresnel lens 1 is formed, and the other configuration and operation are the same as in the first embodiment. In addition,
In the first embodiment as well, it goes without saying that the condensing means 2 may be formed by curving a single fan-shaped lens plate 1a on which a plurality of 7-lens lenses X1 are formed. The aperture angle (β゛) of the fan-shaped lens plate 1a is set so that when assembled into a truncated cone or a truncated polygonal pyramid, the inclination angle of the peripheral surface is a predetermined angle (the angle at which the desired detection area is 111). is set to
(実施例3)
第4図は他の実施例を示すもので、周方向および周方向
と直交方向にそt′Lぐれ複数のフレネルレンズ1を形
成したちのであり、検知エリアをより広くすること力l
できるようになっている。(Embodiment 3) Fig. 4 shows another embodiment, in which a plurality of Fresnel lenses 1 are formed at t'L intervals in the circumferential direction and in a direction perpendicular to the circumferential direction, thereby making the detection area wider. power
It is now possible to do so.
(実施例4)
第5図はさらに池の実施例を示すもので、実施例3と同
様の集光手段2において、周方向と直交方向のフレネル
レンズ1のレンズ中心を周方向にα°づつずらせたもの
であり、周方向と直交方向のフレネルレンズ1に対応す
る検知エリアA++a1、/’121a2、A、ias
・・・・・・が同一面上にならないようにしたものであ
り、各フレネルレンズ1による検知エリアA、〜A、い
&1〜a、。は第9図に示すようになっており、広い範
囲においてさめ綱かく検知動作を行うことができるよう
になっている。すなわち、検知エリアA1〜A、いa、
〜assが均一に分散され、非検知部分(検知感度の低
い部分)を少なくできるようになりでいる。なお、扇形
レンズ板】aを第6図に示すような形状としても良いが
、この場合、周面に凹凸ができて組立作業がやりにくく
なるので、第5図実施例のように端面を一直線状にする
ほうが良い。(Embodiment 4) FIG. 5 further shows an embodiment of the pond, in which the lens center of the Fresnel lens 1 in the direction orthogonal to the circumferential direction is moved by α° in the circumferential direction in the same condensing means 2 as in Embodiment 3. The detection area A++a1, /'121a2,A,ias corresponding to the Fresnel lens 1 in the circumferential direction and the perpendicular direction
. . . are arranged so that they are not on the same plane, and the detection areas A, ~A, i&1~a, by each Fresnel lens 1. As shown in FIG. 9, the system is designed to be able to perform the shark fishing detection operation over a wide range. That is, detection areas A1 to A, ia,
~ass is uniformly distributed, making it possible to reduce non-detection areas (areas with low detection sensitivity). Incidentally, the fan-shaped lens plate [a] may be shaped as shown in Fig. 6, but in this case, the peripheral surface will be uneven and the assembly work will be difficult, so the end face should be aligned in a straight line as in the embodiment in Fig. 5. It is better to make it into a shape.
第7図および第8図は具体的構成例であり、下面が開口
した円錐台状のボディ10の周面に複数の集光窓11を
穿設し、複数のフレネルレンズ1が形成された1枚の扇
形レンズ板1aを湾曲してボディ10内に各フレネルレ
ンズ1がそれぞれ集光窓11に対応するように配設し、
ボディ10の下面開口に赤外線センサ3の挿入孔13を
有するベース12を覆着したものであり、ボディ10と
ベース12は取付ねじ14によって組み立てられるよう
になっている。この場合、湾曲されてボディ10内に挿
入された扇形レンズ板1aは外方に広がろうとしてボデ
ィ10の内面に密着することになるので、扇形レンズj
f、1 aをボディ10の内面に押し付ける手段が不要
になって構成が簡単になるとともに、組立が容易にでさ
ることになる。・(実施例5)
第10図は第2発明の一実施例を示すもので、実施例1
と同様の赤外線検知装置Xにおいて、各フレネルレンズ
1を通った光を反射させて集光せしめる平面鏡4.5を
設けたものであり、フレネルレンズ1から赤外線センサ
3までの実距離をフレネルレンズ1の焦点距離よりも大
幅に短くすることができ、焦点距離が比較的艮い7レネ
ルレンに1を用いた場合にあっても小型化が可能である
。FIGS. 7 and 8 show specific configuration examples, in which a plurality of condensing windows 11 are bored on the circumferential surface of a truncated conical body 10 with an open bottom surface, and a plurality of Fresnel lenses 1 are formed. Two fan-shaped lens plates 1a are curved and arranged in the body 10 so that each Fresnel lens 1 corresponds to the condensing window 11,
A base 12 having an insertion hole 13 for an infrared sensor 3 is covered with a bottom opening of a body 10, and the body 10 and the base 12 are assembled with mounting screws 14. In this case, the fan-shaped lens plate 1a that has been curved and inserted into the body 10 tries to spread outward and comes into close contact with the inner surface of the body 10, so that the fan-shaped lens plate 1a
There is no need for a means for pressing f, 1a against the inner surface of the body 10, which simplifies the configuration and facilitates assembly.・(Example 5) FIG. 10 shows an example of the second invention, and Example 1
In the infrared detection device The focal length can be made much shorter than the focal length of the lens, and even if the focal length is relatively short and 1 is used for 7 Lennel lenses, miniaturization is possible.
なお、実施例5において、集光手段2を構成するフレネ
ルレンズI8笑施例2乃至実施例4と同様に形成しても
良いことは言うまでもない。It goes without saying that in the fifth embodiment, the Fresnel lens I8 constituting the condensing means 2 may be formed in the same manner as in the second to fourth embodiments.
[発明の効果1
本発明は上述のよ1に、円錐台あるいは多角錐台の傾斜
した周面の全周に亘って複数のフレネルレンズを配設す
るととも1こ、各フレネルレンズによる集光点を一致さ
せて集光手段を形成し、上記集光手段による集光点に赤
外線センサを配置したものであり、フレネルレンズを用
いて集光手段を形成しているので、構成が簡単になると
とらに小型化できるという効果があり、また、各フレネ
ルレンズを円錐台あるいは多角錐台の傾斜した周面に解
説しているので、検知エリアを広くすることがでさると
いう効果がある。また、tpJ2発明にあっては、7し
冬ルレンズを通った光を平面鏡で反射させて集光してい
るので、フレネルレンズと赤外線センサとの距離を小さ
くでき、より小型の赤外線検知装置を提供できるという
効果がある。[Effect of the Invention 1] As described in 1 above, the present invention provides a plurality of Fresnel lenses that are disposed over the entire circumference of the inclined peripheral surface of a truncated cone or a truncated polygonal pyramid. The infrared sensor is arranged at the condensing point of the condensing means, and the condensing means is formed using a Fresnel lens, which makes the structure simple. This has the advantage of being able to be made more compact, and since each Fresnel lens is shaped like a truncated cone or a truncated polygonal pyramid with an inclined peripheral surface, it has the effect of widening the detection area. In addition, in the tpJ2 invention, since the light that has passed through the lens is reflected by a plane mirror and concentrated, the distance between the Fresnel lens and the infrared sensor can be reduced, providing a more compact infrared detection device. There is an effect that it can be done.
第1図は本発明一実施例の概略構成を示す斜視図、第2
UjJは同上の他の実施例の概略構成を示す斜視図、第
3図は同上の要部正面図、tt44図はさらに他の実施
例の要部正面図、第5図および16図はそれぞれさらに
他の実施例の要部正面図、第7図具体例の断面図、第8
図は同上の分解斜視図、第9図は同上の動作説明図、第
10図は別の実施例の断面図、第11図は従来例の慨略
枯成因、第12図はさらに他の従来例の概略(a成因で
ある。
1はフレネルレンズ、2は集光手段、3は赤外線センサ
、4.5は平面鏡である。
代理人 弁理士 石 1)長 七
第9図
第1Q図
第11図
第12図Fig. 1 is a perspective view showing the schematic configuration of one embodiment of the present invention;
UjJ is a perspective view showing a schematic configuration of another embodiment same as above, FIG. 3 is a front view of the main part of the same as above, tt44 is a front view of main part of another embodiment, and FIGS. 5 and 16 are each further Main part front view of other embodiments, Fig. 7 sectional view of specific example, Fig. 8
The figure is an exploded perspective view of the same as the above, FIG. 9 is an explanatory view of the same as the above, FIG. 10 is a sectional view of another embodiment, FIG. 11 is a summary of the cause of failure of the conventional example, and FIG. Outline of an example (cause of a. 1 is a Fresnel lens, 2 is a condensing means, 3 is an infrared sensor, and 4.5 is a plane mirror. Agent Patent attorney Ishi 1) Long Figure 7 Figure 9 Figure 1Q Figure 11 Figure 12
Claims (8)
亘って複数のフレネルレンズを配設するとともに、各フ
レネルレンズによる集光点を一致させて集光手段を形成
し、上記集光手段による集光点に赤外線センサを配置し
て成る赤外線検知装置。(1) A plurality of Fresnel lenses are arranged along the entire circumference of the inclined circumferential surface of a truncated cone or a truncated polygonal pyramid, and the condensing points of each Fresnel lens are aligned to form a condensing means, and the condensing means An infrared detection device consisting of an infrared sensor placed at a light convergence point by optical means.
ンズ板を湾曲あるいは屈曲して集光手段を形成して成る
特許請求の範囲第1項記載の赤外線検知装置。(2) The infrared detection device according to claim 1, wherein the light condensing means is formed by curving or bending one fan-shaped lens plate on which a plurality of Fresnel lenses are formed.
フレネルレンズを形成して成る特許請求の範囲第1項記
載の赤外線検知装置。(3) The infrared detection device according to claim 1, wherein a plurality of Fresnel lenses are formed in the circumferential direction and in a direction perpendicular to the circumferential direction.
を周方向にずらせて成る特許請求の範囲第3項記載の赤
外線検知装置。(4) The infrared detection device according to claim 3, wherein the lens center of the Fresnel lens in the direction perpendicular to the circumferential direction is shifted in the circumferential direction.
亘って複数のフレネルレンズを配設し、各フレネルレン
ズによる集光点を一致させるとともに、該集光点に赤外
線センサを配置して成る赤外線検知装置において、各フ
レネルレンズを通った光を反射させて集光せしめる平面
鏡を設けて成ることを特徴とする赤外線検知装置。(5) A plurality of Fresnel lenses are arranged all around the inclined circumferential surface of a truncated cone or a truncated polygonal pyramid, the light focusing points of each Fresnel lens are made to coincide, and an infrared sensor is placed at the light focusing point. An infrared detection device comprising a plane mirror that reflects and focuses light passing through each Fresnel lens.
ンズ板を湾曲あるいは屈曲して集光手段を形成して成る
特許請求の範囲第5項記載の赤外線検知装置。(6) The infrared detecting device according to claim 5, wherein the condensing means is formed by curving or bending one fan-shaped lens plate on which a plurality of Fresnel lenses are formed.
フレネルレンズを形成して成る特許請求の範囲第5項記
載の赤外線検知装置。(7) The infrared detection device according to claim 5, wherein a plurality of Fresnel lenses are formed in the circumferential direction and in a direction perpendicular to the circumferential direction.
を周方向にずらせて成る特許請求の範囲第7項記載の赤
外線検知装置。(8) The infrared detection device according to claim 7, wherein the lens center of the Fresnel lens in the direction perpendicular to the circumferential direction is shifted in the circumferential direction.
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP59199901A JPS6177723A (en) | 1984-09-25 | 1984-09-25 | Infrared-ray detecting device |
AU45079/85A AU560866B2 (en) | 1984-09-25 | 1985-07-17 | Passive infrared detector |
CA000487230A CA1250637A (en) | 1984-09-25 | 1985-07-22 | Passive infrared detector |
DE8585305282T DE3568653D1 (en) | 1984-09-25 | 1985-07-24 | Passive infrared detector |
EP85305282A EP0177130B1 (en) | 1984-09-25 | 1985-07-24 | Passive infrared detector |
US06/758,877 US4672206A (en) | 1984-09-25 | 1985-07-25 | Passive infrared detector |
SG591/89A SG59189G (en) | 1984-09-25 | 1989-09-05 | Passive infrared detector |
HK916/89A HK91689A (en) | 1984-09-25 | 1989-11-16 | Passive infrared detector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP59199901A JPS6177723A (en) | 1984-09-25 | 1984-09-25 | Infrared-ray detecting device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6177723A true JPS6177723A (en) | 1986-04-21 |
Family
ID=16415481
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP59199901A Pending JPS6177723A (en) | 1984-09-25 | 1984-09-25 | Infrared-ray detecting device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6177723A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5085148A (en) * | 1989-08-24 | 1992-02-04 | Tomy Company, Ltd. | Toy with remote control track switching |
US5308985A (en) * | 1991-10-31 | 1994-05-03 | Intelectron Products Company | Wide-angle passive infrared radiation detector |
CN109416157A (en) * | 2016-07-05 | 2019-03-01 | 博立多媒体控股有限公司 | Panorama sensing device |
-
1984
- 1984-09-25 JP JP59199901A patent/JPS6177723A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5085148A (en) * | 1989-08-24 | 1992-02-04 | Tomy Company, Ltd. | Toy with remote control track switching |
US5308985A (en) * | 1991-10-31 | 1994-05-03 | Intelectron Products Company | Wide-angle passive infrared radiation detector |
CN109416157A (en) * | 2016-07-05 | 2019-03-01 | 博立多媒体控股有限公司 | Panorama sensing device |
JP2019527928A (en) * | 2016-07-05 | 2019-10-03 | ボリーメディア ホールディングス カンパニー リミテッドBolymedia Holdings Co. Ltd. | Panorama sensing device |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US3958118A (en) | Intrusion detection devices employing multiple scan zones | |
US4321594A (en) | Passive infrared detector | |
US4087688A (en) | Infrared radiation-burglary detector | |
US5308985A (en) | Wide-angle passive infrared radiation detector | |
US4930864A (en) | Domed segmented lens systems | |
US4717821A (en) | Flat wide-angle lens array with a common focus | |
US6239437B1 (en) | Passive infrared detector | |
US5677529A (en) | Passive infrared sensor using a pair of sensors and reflectors for a 270 degree field of view | |
US4058726A (en) | Radiation detector | |
JPS59112202U (en) | solar energy concentrator | |
EP0899547B1 (en) | A lens for a light detector | |
US4933560A (en) | Pyroelectric infrared sensors | |
US5124546A (en) | Method and apparatus for refracting light to an optical detector | |
JPS6177723A (en) | Infrared-ray detecting device | |
JP2672492B2 (en) | Photoelectric switch | |
JP3389806B2 (en) | Multi lens | |
JPH09305871A (en) | Infrared detector | |
US4429223A (en) | Infrared intrusion detector | |
JPS6342372Y2 (en) | ||
US20060289767A1 (en) | Reflective mirror structure | |
JP3114117U (en) | Reflector | |
US4689486A (en) | Folded optical system for radiation detection device | |
JPS5844472Y2 (en) | Alarm light receiving device | |
US6037593A (en) | Catoptric optical system for detecting motion of a radiant source | |
JPH026384Y2 (en) |