JPS62197725A - Heat ray detector - Google Patents
Heat ray detectorInfo
- Publication number
- JPS62197725A JPS62197725A JP61039969A JP3996986A JPS62197725A JP S62197725 A JPS62197725 A JP S62197725A JP 61039969 A JP61039969 A JP 61039969A JP 3996986 A JP3996986 A JP 3996986A JP S62197725 A JPS62197725 A JP S62197725A
- Authority
- JP
- Japan
- Prior art keywords
- heat ray
- lens
- filter
- fresnel lens
- ray sensor
- 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
- 238000002834 transmittance Methods 0.000 claims description 4
- 239000000428 dust Substances 0.000 abstract description 8
- 238000001514 detection method Methods 0.000 abstract description 4
- 239000000049 pigment Substances 0.000 abstract description 2
- 238000003466 welding Methods 0.000 abstract description 2
- 230000005540 biological transmission Effects 0.000 abstract 2
- 230000007257 malfunction Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 239000004698 Polyethylene Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 229930091051 Arenine Natural products 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
- Radiation Pyrometers (AREA)
- Geophysics And Detection Of Objects (AREA)
- Burglar Alarm Systems (AREA)
Abstract
Description
【発明の詳細な説明】
［技術分野１
本発明は熱線センサに熱線を集光するフレネルレンズを
（ｑえた熱線検知器に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Technical Field 1] The present invention relates to a heat ray detector equipped with a Fresnel lens for concentrating heat rays on the heat ray sensor.
［背景１支術ｊ
従来、−の種の熱線検知器としては第５図及び第６図に
示すものがあり、この熱線検知器は、熱線を感知する熱
線センサ４ａ６の熱線検知回路が収納された収納部７を
備えたボディ１と、熱線を集光するフレネルレンズ３が
取着されたカバー２とを備えたものであり、上記ボディ
１の収納部７にフレネルレンズ３にて集光した熱線を熱
線センサ４に導く開口部６が９股しである。そして、上
記ボディ１とカバー２とでケース１５を形成している。[Background 1 Section j] Conventionally, there are heat ray detectors of the - type shown in Figs. 5 and 6, and this heat ray detector houses a heat ray detection circuit of a heat ray sensor 4a6 that detects heat rays. The device includes a body 1 having a storage section 7, and a cover 2 to which a Fresnel lens 3 for concentrating heat rays is attached. There are nine openings 6 that guide the heat rays to the heat ray sensor 4. The body 1 and cover 2 form a case 15.
上記ボディ１は前面が開口された箱型であり、収納部７
の側方に端子台９が取着される。この端Ｔ台っは外部装
置からの電源線や信号ｍ′９の配線１０が接続されるも
のである。The body 1 is box-shaped with an open front, and has a storage section 7.
A terminal block 9 is attached to the side of the terminal block 9. This end T-stand is connected to a power line from an external device and a wiring 10 for a signal m'9.
しかし、この熱線検知器においては、フレネルレンズ３
が剥き出しになっているため、前面のレンＸ″溝にほこ
りがたまり、熱線を効率良く集光することができなくな
る問題があった。However, in this heat ray detector, Fresnel lens 3
Since the lens is exposed, dust accumulates in the lens X'' groove on the front surface, making it impossible to efficiently focus the heat rays.
［発明の目的１
本発明は上述の点に鑑みて為されたものであり、その目
的とｒるところは、フレネルレンズにほこりがたまって
フレネルレンズの集光効率が低下することがない熱線検
知器を提供することにある。[Objective of the Invention 1 The present invention has been made in view of the above points, and its object is to provide a heat ray detection method that does not reduce the light collection efficiency of the Fresnel lens due to the accumulation of dust on the Fresnel lens. It is about providing the equipment.
［発明の開示１
（構成）
本発明は、熱線センサに熱線を集光するフレネルレンズ
を備えた熱線検知器において、フレネルレンズの前面に
熱線の透過率の良いフィルタを貼着し、７レネルレン【
にほこりがたまって７レネルレンＸの集光効率が低下す
ることがない熱線検知器をｊ１示する。DISCLOSURE OF THE INVENTION 1 (Structure) The present invention provides a heat ray detector equipped with a Fresnel lens that focuses heat rays on a heat ray sensor, in which a filter with high transmittance for heat rays is attached to the front surface of the Fresnel lens, and a 7-Resnel lens [
j1 shows a heat ray detector in which the light collection efficiency of 7 Renel Len X does not decrease due to dust accumulation.
（実施例１）
第１図及Ｖ第２図は本発明の一実施例を示す図であり、
本実施例は上述の従来例と同様のボディ１とカバー２と
からなるケース１５内に焦電素子などの熱線センサ４！
４？から構成された検知回路を収納し、フレネルレンズ
３にて集光した熱線を熱線センサ４にて検知するように
したものである。(Example 1) Figures 1 and 2 are diagrams showing an example of the present invention,
In this embodiment, a heat ray sensor 4 such as a pyroelectric element is housed in a case 15 consisting of a body 1 and a cover 2 similar to the conventional example described above.
4? The heat ray sensor 4 detects the heat rays condensed by the Fresnel lens 3.
以下各部について詳述する。Each part will be explained in detail below.
ボディ１は第１図に示すように前面開口の箱型であり、
７１２図に示すように熱線センサ４等から構成された熱
線検知回路が実装されたプリント基板５が収納され上記
熱線センサ４に熱線を集光できるように前［７ａ１．：
開口部６が′ｇ設された収納部７を備え、この収納部７
の何方に端子台９が取着しである。上記収納部７の開口
部６には風などが収納部７内に入り込み、熱線センサ４
の温度に変化を起こさせて熱線センサ４が誤動作するこ
とを防止するために、前板７ａの開口部７！！面にポリ
エチレンフィルム等のシート状のフィルタ１１が貼着し
である。このフィルタ１１は遠赤外線の透過率がよく、
可視光線のカット率が大きい、たとえば顔料入りのフィ
ルムにて形成し、フィルタ効果を持たせたものである。The body 1 is box-shaped with a front opening as shown in FIG.
As shown in FIG. 712, a printed circuit board 5 on which a heat ray detection circuit composed of a heat ray sensor 4 and the like is mounted is housed, and the front [7a1. :
A storage section 7 is provided with an opening 6.
On which side is the terminal block 9 attached? Wind etc. enters into the opening 6 of the storage section 7, and the heat ray sensor 4
In order to prevent the heat ray sensor 4 from malfunctioning due to a change in the temperature of the front plate 7a, the opening 7! ! A sheet-like filter 11 made of polyethylene film or the like is attached to the surface. This filter 11 has good transmittance of far infrared rays,
It is made of a pigmented film that has a high visible light cut rate, for example, and has a filter effect.
このボディ１の底板には、端子台９に接続される電源線
や入出力ｍ”；の配＃ａ１０を背方に引き出せるように
挿通孔（図示せず）が穿孔しである。上記開口部６に貼
着されたフィルタ１１は次の働きをする。即ち、カバー
２がボディ１に嵌着された状態においても、ボディ１の
底板には端子台９に配＠ｉｏを接続するために挿通孔が
穿孔しであるから、この挿ａ孔から風が収納部７内に入
り込み、熱線センサ４が誤動作するおそれがある。そこ
で、開口部６にフィルタ１１を貼着して開口部６を閉塞
することにより、収納部７内に風が入り込まないもので
ある。The bottom plate of the body 1 is provided with an insertion hole (not shown) so that the power supply line connected to the terminal block 9 and the wiring #a10 of the input/output m'' can be pulled out to the back.The above-mentioned opening The filter 11 affixed to the terminal block 6 has the following function.That is, even when the cover 2 is fitted to the body 1, the bottom plate of the body 1 is inserted through to connect the wiring to the terminal block 9. Since the hole is perforated, there is a risk that wind may enter the storage section 7 through this insertion hole and cause the heat ray sensor 4 to malfunction.Therefore, a filter 11 is attached to the opening 6 to close the opening 6. This prevents wind from entering the storage section 7.
さらにこのフィルタ１１には可視光線を遮蔽するように
フィルタ効果を持たせているので、熱線以外の外乱光が
熱線センサ４に照射され、熱線センサ４が誤動作するこ
とを防止できるものである。Furthermore, since the filter 11 has a filtering effect to block visible light, it is possible to prevent disturbance light other than heat rays from irradiating the heat ray sensor 4 and causing the heat ray sensor 4 to malfunction.
カバー２は背面開口の箱型であり、前板２ａに上記ボデ
ィ１の開口部６と同一位置に開口部１３が穿設してあり
、この開口部１３に７し冬ルレンズ３が取）ｒＪされＣ
いる。このカバー２の１１１１０周縁をボディ１の閣「
１周縁に嵌着することで、カバー２はボディ１に被着さ
れる。The cover 2 is box-shaped with a rear opening, and an opening 13 is bored in the front plate 2a at the same position as the opening 6 of the body 1. C
There is. The 11110 periphery of this cover 2 is the part of body 1.
The cover 2 is attached to the body 1 by fitting onto one peripheral edge.
フレネルレンズ３は断面形状が円弧状であり、このフレ
ネルレン７：：３の前面を覆うようにポリエチレンフィ
ルム等のフィルり１２が被着され、このフィルタ１２も
上述のフィルタ１１と同様に遠赤外線の通過率がよく、
可視光線のカット率が大きい、ｒことえば顔料入Ｔ）の
フイルム５二で形成しである。そしてフィルタ１２はフ
レネルレンズ３に熱着、所謂溶着して取着されるか、あ
るいは７レネルレンＸ３と一体成型（同時成型）される
。このフィルタ１２を７し冬ルレンズ３の表面に貼着す
ることにより、フレネルレンズ３のレンズ溝にほこりが
たまり、フレネルレンズ３の熱線の集光機部が低下する
ことを防止でき、またこのフィルタ１２が可視光線を遮
蔽するフィルタ特性を有するために、外乱光がフレネル
レンズ３にて集光されて熱線センサ４が誤動作すること
も防止できるものである。The Fresnel lens 3 has an arcuate cross-sectional shape, and a film 12 such as a polyethylene film is applied to cover the front surface of the Fresnel lens 7::3. Like the filter 11 described above, this filter 12 also receives far infrared rays. Good passing rate,
It is made of a pigment-containing film 52 that has a high visible light cut rate. The filter 12 is attached to the Fresnel lens 3 by heat bonding, so-called welding, or is integrally molded (simultaneously molded) with the Fresnel lens X3. By pasting this filter 12 on the surface of the winter lens 3, it is possible to prevent dust from accumulating in the lens groove of the Fresnel lens 3 and lowering the heat ray condensing part of the Fresnel lens 3. Since the filter 12 has a filter characteristic of blocking visible light, it is possible to prevent disturbance light from being collected by the Fresnel lens 3 and causing the heat ray sensor 4 to malfunction.
（実施例２）
第３図及び第４図は本発明の他の実施例を示す図であり
、本実施例はボディ１の収納部７゛にフレネルレンズ３
が一体に取着されたものである。(Embodiment 2) FIGS. 3 and 4 are diagrams showing other embodiments of the present invention. In this embodiment, a Fresnel lens 3 is installed in the storage section 7' of the body 1.
are attached in one piece.
このため、収納部７゛の前板７ａ’の開１］部６°の上
下縁部にフレネルレンズ３を取着するための、取付部１
４が突設しである。またカバー２の７レネルレンＸ３位
置に相当ｆ ７＋ｎｕ板２ａには、このフレネルレンズ
３を挿通する開口部１：３を穿設しである。他の構成に
関しては第１の実施例と同様であるので説明は省略する
。For this reason, the mounting portion 1 for attaching the Fresnel lens 3 to the upper and lower edges of the opening 1] portion 6° of the front plate 7a′ of the storage portion 7′ is provided.
4 is a protrusion. Further, the f7+nu plate 2a corresponding to the 7-Resnel lens X3 position of the cover 2 is provided with an opening 1:3 through which the Fresnel lens 3 is inserted. The other configurations are the same as those in the first embodiment, so explanations will be omitted.
本実施例も上述の第１の実施例と同様に、収納部７゛の
前板７ａ’の開口部６°にフィルタ１１が貼着してあり
、このフィルタ１１にて収納部７゛に取り付けられたフ
レネルレンズ３の外周部の隙間から風が入り込み、熱線
センサ４が誤動作することを防止しているものである。Similar to the first embodiment described above, in this embodiment, a filter 11 is attached to the opening 6° of the front plate 7a' of the storage section 7'', and the filter 11 is attached to the storage section 7''. This prevents wind from entering through the gap in the outer periphery of the Fresnel lens 3 and causing the heat ray sensor 4 to malfunction.
さらに、このフィルタ１１の可視光線を遮蔽する効果に
より、熱線センサ４の外乱光による誤動作も防止できる
ものである。まｒこフレネルレンズ３にフィルタ１２が
１１？され、７レネルレンＸ”３のレンズ溝にほこりが
たなることを防止し、外乱光による誤動作を防止するよ
うにしである。Furthermore, the effect of the filter 11 in blocking visible light rays can also prevent malfunctions of the heat ray sensor 4 due to disturbance light. Mako Fresnel lens 3 and filter 12 are 11? This is to prevent dust from accumulating in the lens groove of the 7-lens lens X"3, and to prevent malfunctions caused by ambient light.
［発明の効果１
本発明は上述のように、熱線センサに熱線を集光するフ
レネルレンズを備えた熱線検知器において、フレネルレ
ンズの前面に熱線の透過率が良く可視光線を遮蔽するフ
ィルタを備えているので、フレネルレンズのレンズ溝に
ほこりがたまり、フレネルレンズの熱線の集光機能が低
下することを防ＩＦでき、またこのフィルタが可視光線
を遮蔽するフィルタ特性を有するために、外６Ｌ光がフ
レネルレンズにて集光されて熱線センサが誤動作するこ
とも防止できる効果を奏する。[Effects of the Invention 1] As described above, the present invention is a heat ray detector equipped with a Fresnel lens that focuses heat rays on a heat ray sensor, and a filter that has a high transmittance for heat rays and blocks visible light on the front surface of the Fresnel lens. This filter prevents dust from accumulating in the lens groove of the Fresnel lens and deteriorating the heat ray focusing function of the Fresnel lens.Also, since this filter has filter characteristics that block visible light, it is possible to prevent external 6L light from accumulating in the lens groove. This has the effect of preventing the heat ray sensor from malfunctioning due to the light being focused by the Fresnel lens.
第１図は本発明の一実施例の分解斜視図、第２図は１４
上の組立後の断面図、ｒｐＪ３図は本発明の他の実施例
の分解斜視図、第４図は同上の組立後の断面図、第５図
は従来例を示す分解斜視図、第６図は同上の組立後の断
面図である。
３はフレネルレンズ、４は熱線センサ、１２はフィルタ
である。FIG. 1 is an exploded perspective view of one embodiment of the present invention, and FIG.
The above sectional view after assembly, rpJ3 is an exploded perspective view of another embodiment of the present invention, FIG. 4 is a sectional view after the above assembly, FIG. 5 is an exploded perspective view showing a conventional example, and FIG. is a sectional view after assembly of the same as above. 3 is a Fresnel lens, 4 is a heat ray sensor, and 12 is a filter.
Claims (3)
えた熱線検知器において、フレネルレンズの前面に熱線
の透過率が良く可視光線を遮蔽するフィルム状のフィル
タを備えて成ることを特徴とする熱線検知器。(1) A heat ray detector equipped with a Fresnel lens that focuses heat rays on the heat ray sensor, characterized by comprising a film-like filter on the front surface of the Fresnel lens that has a high transmittance for heat rays and blocks visible light rays. Heat ray detector.
フィルタをフレネルレンズに貼着して成る特許請求の範
囲第１項記載の熱線検知器。(2) A heat ray detector according to claim 1, wherein the filter is adhered to the Fresnel lens by thermally bonding the side edges of the filter to the Fresnel lens.
る特許請求の範囲第１項記載の熱線検知器。(3) The heat ray detector according to claim 1, wherein the filter is integrally molded with a Fresnel lens.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61039969A JPH0697191B2 (en) | 1986-02-25 | 1986-02-25 | Heat ray detector |
| AU64604/86A AU580898B2 (en) | 1986-02-25 | 1986-10-30 | Infrared detector |
| US06/924,758 US4795908A (en) | 1986-02-25 | 1986-10-30 | Infrared detector |
| GB8626507A GB2186972B (en) | 1986-02-25 | 1986-11-06 | Infrared detector |
| DE19863639323 DE3639323A1 (en) | 1986-02-25 | 1986-11-17 | INFRARED DETECTOR |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61039969A JPH0697191B2 (en) | 1986-02-25 | 1986-02-25 | Heat ray detector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62197725A true JPS62197725A (en) | 1987-09-01 |
| JPH0697191B2 JPH0697191B2 (en) | 1994-11-30 |
Family
ID=12567781
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61039969A Expired - Lifetime JPH0697191B2 (en) | 1986-02-25 | 1986-02-25 | Heat ray detector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0697191B2 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0275916A (en) * | 1988-09-12 | 1990-03-15 | Opt Kk | Infrared ray detector |
| JPH0259448U (en) * | 1988-10-24 | 1990-05-01 | ||
| JPH0259447U (en) * | 1988-10-24 | 1990-05-01 | ||
| DE4012615A1 (en) * | 1990-04-20 | 1991-10-24 | T Elektronik Gmbh As | COMBINED CONTACTLESS TEMPERATURE MEASUREMENT METHOD IN SEMICONDUCTOR PROCESS TECHNOLOGY |
| EP0650039A1 (en) * | 1993-09-22 | 1995-04-26 | Matsushita Electric Industrial Co., Ltd. | A pyroelectric type infrared sensor |
| GB2349235A (en) * | 1999-04-22 | 2000-10-25 | Visonic Ltd | Optical filter for passive infrared detector assembly |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS517654U (en) * | 1974-07-04 | 1976-01-20 | ||
| JPS5682627U (en) * | 1979-11-30 | 1981-07-03 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4447726A (en) | 1982-04-16 | 1984-05-08 | Cerberus Ag | Passive infrared intrusion detector |
-
1986
- 1986-02-25 JP JP61039969A patent/JPH0697191B2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS517654U (en) * | 1974-07-04 | 1976-01-20 | ||
| JPS5682627U (en) * | 1979-11-30 | 1981-07-03 |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0275916A (en) * | 1988-09-12 | 1990-03-15 | Opt Kk | Infrared ray detector |
| JPH0259448U (en) * | 1988-10-24 | 1990-05-01 | ||
| JPH0259447U (en) * | 1988-10-24 | 1990-05-01 | ||
| DE4012615A1 (en) * | 1990-04-20 | 1991-10-24 | T Elektronik Gmbh As | COMBINED CONTACTLESS TEMPERATURE MEASUREMENT METHOD IN SEMICONDUCTOR PROCESS TECHNOLOGY |
| DE4012615C2 (en) * | 1990-04-20 | 1992-07-16 | A.S.T. Elektronik Gmbh, 7900 Ulm, De | |
| EP0650039A1 (en) * | 1993-09-22 | 1995-04-26 | Matsushita Electric Industrial Co., Ltd. | A pyroelectric type infrared sensor |
| US5567941A (en) * | 1993-09-22 | 1996-10-22 | Matsushita Electric Industrial Co., Ltd. | Pyroelectric type infrared sensor |
| EP0838670A3 (en) * | 1993-09-22 | 1998-05-20 | Matsushita Electric Industrial Co., Ltd. | A pyroelectric type infrared sensor |
| GB2349235A (en) * | 1999-04-22 | 2000-10-25 | Visonic Ltd | Optical filter for passive infrared detector assembly |
| GB2349235B (en) * | 1999-04-22 | 2002-12-24 | Visonic Ltd | Optical filter and passive infrared detector assembly |
| US6818881B1 (en) | 1999-04-22 | 2004-11-16 | Visonic Ltd., | Optical filter and passive infrared detector assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0697191B2 (en) | 1994-11-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0157644A3 (en) | Flame detectors | |
| JP2691951B2 (en) | Photoelectric smoke detector | |
| JPS62197725A (en) | Heat ray detector | |
| US4882491A (en) | Infrared detector | |
| JPS62197723A (en) | Heat ray detector | |
| JP2002352347A (en) | Fire sensor | |
| JPH0395928U (en) | ||
| JPS5924226A (en) | Infrared ray human body detector | |
| JPS6159884A (en) | solar cell module | |
| JPH0973946A (en) | Water-proof structure | |
| US5302998A (en) | Camera with installation structure of lens for light measurement | |
| JPH051790Y2 (en) | ||
| JPH059626Y2 (en) | ||
| CA1135383A (en) | Control device responsive to infrared radiation | |
| JPH06337228A (en) | Pyroelectric sensor | |
| JPS611061A (en) | Manufacture of photodetector containing filter | |
| JPH0436417Y2 (en) | ||
| JP2642964B2 (en) | Infrared detector | |
| CA2289162C (en) | Combination lens and window retainer and housing assembly for a motion detector system | |
| CA1261941A (en) | Infrared detector | |
| JPH0613514Y2 (en) | Heat ray detector | |
| JPS62197724A (en) | Heat rays sensor | |
| HU9701384D0 (en) | Motion sensor provided with at least one condensing lens | |
| JPH055464Y2 (en) | ||
| JPS59151126U (en) | Solar radiation detector for vehicle air conditioning control equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |