JPH02162220A - Infrared-ray detecting element - Google Patents
Infrared-ray detecting elementInfo
- Publication number
- JPH02162220A JPH02162220A JP63316175A JP31617588A JPH02162220A JP H02162220 A JPH02162220 A JP H02162220A JP 63316175 A JP63316175 A JP 63316175A JP 31617588 A JP31617588 A JP 31617588A JP H02162220 A JPH02162220 A JP H02162220A
- Authority
- JP
- Japan
- Prior art keywords
- infrared
- cap
- black body
- infrared rays
- waveguide
- 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 11
- 230000005540 biological transmission Effects 0.000 claims description 7
- 230000035945 sensitivity Effects 0.000 abstract description 5
- 229910052737 gold Inorganic materials 0.000 abstract description 2
- 229910052759 nickel Inorganic materials 0.000 abstract description 2
- 238000002310 reflectometry Methods 0.000 abstract 1
- 239000006096 absorbing agent Substances 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、物体の温度を非接触で計測する場合などに使
用する赤外線検出素子に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an infrared detection element used for non-contact measurement of the temperature of an object.
物体などの温度を非接触で計測する赤外線検出デバイス
には、熱量とよばれるものと、量子型とよばれるものが
あシ、熱量とよばれるものには、被検出物が放射する赤
外線を吸収する吸収体の熱量を熱起電力に変換して取シ
出す方式のもの（サーモパイル）と、吸収体の熱量に応
じた抵抗の変化を検出する方式のもの（サーミスタゲロ
メータ）などがある。There are two types of infrared detection devices that non-contact measure the temperature of objects, etc.: those called caloric devices and the quantum type. There are two types: one that converts the amount of heat in the absorber into thermoelectromotive force and extracts it (thermopile), and the other that detects changes in resistance according to the amount of heat in the absorber (thermistagerometer).
通常、これら熱型赤外線検出デバイスは、ヘッダに取付
け、キャップで覆った状態で使用することが多く、そし
て、被検出物が放射する光線のうち赤外線（熱線）のみ
がデバイスに到達するように、光の通路に赤外線透過フ
ィルタを配置し、赤外線を吸収する吸収体として、金属
熱などで形成した黒体をデバイスがもつ構造を採ること
が多い。Normally, these thermal infrared detection devices are often used by being attached to a header and covered with a cap. In many cases, a device has a structure in which an infrared transmission filter is placed in the light path, and a black body formed from metal heat is used as an absorber for absorbing infrared rays.
第３図に従来のこの種赤外線検出素子の一例の構造を示
す。FIG. 3 shows the structure of an example of a conventional infrared detection element of this type.
図においてｌはヘッダ、２はヘッダｌに取付けた熱量赤
外麿検出デバイス、２１はデバイス２の赤外線を吸収す
る黒体部、３はキャップ、４は開口部、５は赤外線透過
フィルタである。In the figure, 1 is a header, 2 is a heat quantity infrared detection device attached to the header 1, 21 is a black body portion that absorbs the infrared rays of the device 2, 3 is a cap, 4 is an opening, and 5 is an infrared transmission filter.
ヘッダ１に取付けた熱型赤外線検出デバイス２の黒体部
２１が、開口部４から赤外線透過フィルタ５を′透過し
て入射する被検出物が放射する赤外線を吸収し、発生す
る熱量による熱起電力または抵抗などの変化によって、
被検出物の温度を検出する。The black body part 21 of the thermal infrared detection device 2 attached to the header 1 absorbs the infrared rays emitted by the object to be detected that passes through the infrared transmission filter 5 from the opening 4 and causes heat generation due to the amount of heat generated. By changes in power or resistance, etc.
Detects the temperature of the object to be detected.
従来の上記構造の赤外線検出素子では、例えば。 In the conventional infrared detection element having the above structure, for example.
図中（イ）で示すような入射角の赤外線は黒体部２１に
達せず、キャップ開口部４を通過した赤外線のうち黒体
部２１に吸収されないものが生じ、感度面で損をすると
いう問題があった。Infrared rays having an incident angle as shown in (a) in the figure do not reach the black body part 21, and some of the infrared rays that pass through the cap opening 4 are not absorbed by the black body part 21, resulting in a loss in sensitivity. There was a problem.
また、キャップ３内壁の大部分が黒体部２１の視界内に
入っているために、キャップ３内壁の温度が上昇すると
、黒体部２１の被検出体からの赤外線による熱量増大に
、キャップ３内壁からの赤外線による熱量増大が加わり
、正確な値が得られなくなるという問題があった。Furthermore, since most of the inner wall of the cap 3 is within the field of view of the black body section 21, when the temperature of the inner wall of the cap 3 increases, the amount of heat generated by the infrared rays from the object to be detected in the black body section 21 increases, and the cap 3 There was a problem that an accurate value could not be obtained due to the addition of an increase in the amount of heat due to infrared rays from the inner wall.
本発明は上記の問題を解消するためになされたもので、
感度がよく、かつ、キャンプ内壁の温度上昇に影響され
ないものを提供することを目的とする。The present invention was made to solve the above problems.
The purpose is to provide something that has good sensitivity and is not affected by the temperature rise of the inner wall of the camp.
本発明の赤外線検出素子は、上記目的を達成するために
、キャップに一体に該キャップ上部の開口部から黒体部
の上部まで延び開口部から入射する赤外線を黒体部に導
く赤外線導波管を設けたものである。In order to achieve the above object, the infrared detecting element of the present invention includes an infrared waveguide that is integrated into the cap and extends from an opening in the upper part of the cap to the upper part of the black body part and guides infrared rays incident from the opening to the black body part. It has been established.
第１図は本発明の一実施例を示す。 FIG. 1 shows an embodiment of the invention.
図において１，２，２１．３．４．５は第３図の同一符
号と同一または相当する部分を示し、６はキャップ３に
一体に設けた赤外線導波管である。In the figure, 1, 2, 21.3.4.5 indicate the same or corresponding parts as the same reference numerals in FIG. 3, and 6 is an infrared waveguide provided integrally with the cap 3.
赤外線導波管６は、開口部４の形状に応じて、円筒状か
正方形型筒状で、内面はＮｉ、Ａｕなとの反射率の高い
膜を被覆してあり、第３図に（イ）に示すような入射角
の赤外線は内面で反射して、黒体部２１に達する。The infrared waveguide 6 has a cylindrical or square tube shape depending on the shape of the opening 4, and the inner surface is coated with a highly reflective film such as Ni or Au. ) is reflected by the inner surface and reaches the black body portion 21.
第２図（ａ） 、 （ｂ） 、 （ｃ）は赤外線導波管
６の構造の例を示す。図（、）は同一材料からキャップ
３と一体に製作したもの、図（ｂ） 、 （Ｃ）はキャ
ップ３と赤外線導波管６を接着剤７で接着したものであ
る。2(a), (b), and (c) show examples of the structure of the infrared waveguide 6. FIG. Figures (,) are manufactured integrally with the cap 3 from the same material, and Figures (b) and (C) are those in which the cap 3 and the infrared waveguide 6 are bonded together with an adhesive 7.
上記・構造に赤外線導波管６を設けることにより、キャ
ッジ３上部の開口部４から赤外線透過フィルタ５を透過
して入射した赤外線は、効率よく黒体部２１に到達し、
吸収される。By providing the infrared waveguide 6 in the above-mentioned structure, the infrared rays that have passed through the infrared transmission filter 5 from the opening 4 on the upper part of the carriage 3 and are incident thereon efficiently reach the black body part 21.
Absorbed.
また、キャラｆ３の温度上昇によりキャップ３内面から
放射される赤外線は、遮断されて黒体部２１に到達する
ことが阻まれる。Furthermore, infrared rays emitted from the inner surface of the cap 3 due to the temperature rise of the character f3 are blocked and prevented from reaching the black body portion 21.
以上説明したように、本発明によると、キャップ上部の
開口部から赤外線透過フィルタを透過して入射する赤外
線はほとんどすべて黒体部に吸収されるので、感度がよ
くなるとともに、キャップ内面から放射される赤外線な
どが黒体部に吸収されないので、正確な値が得られると
いう効果がある。As explained above, according to the present invention, almost all of the infrared rays that pass through the infrared transmission filter and enter from the opening at the top of the cap are absorbed by the black body, improving sensitivity and emitted from the inner surface of the cap. Since infrared rays are not absorbed by the black body, accurate values can be obtained.
第１図は本頼明の一実施例を示す模式図、第２図（ａｌ
＃ （ｂ）” ＃ （ｅ）は本発明の赤外線導波管の
構造の例を示す断面図、第３図は従来のこの裡赤外線検
出素子の一例の構造を示す模式図である。
１・・・ヘッド、２・・・熱型赤外線検出デバイス、２
１・・・黒体部、３・・・キャップ、４・・・開口部、
５・・・赤外線透過フィルタ、６・・・赤外線導波管、
７・・・接着剤。
なお図中同一符号は同一または相当する部分を示す。Fig. 1 is a schematic diagram showing one embodiment of Yoriaki Motoyoshi, Fig. 2 (al.
#(b)"#(e) is a cross-sectional view showing an example of the structure of the infrared waveguide of the present invention, and FIG. 3 is a schematic diagram showing the structure of an example of the conventional infrared detecting element. 1. ...Head, 2...Thermal infrared detection device, 2
1...Black body part, 3...Cap, 4...Opening part,
5... Infrared transmission filter, 6... Infrared waveguide,
7...Adhesive. Note that the same reference numerals in the figures indicate the same or corresponding parts.
Claims (1)
ャップ上部の開口部から赤外線透過フィルタを透過して
入射する赤外線を捕えて被検出物が放射する赤外線を検
出する赤外線検出素子において、上記キャップに一体に
設けた該キャップ上部の開口部から上記黒体部の上部ま
で延び上記開口部から入射する赤外線を上記黒体部に導
く赤外線導波管を備えたことを特徴とする赤外線検出素
子。In the infrared detection element, the black body part of the thermal infrared detection device attached to the header captures the infrared rays incident from the opening in the upper part of the cap through the infrared transmission filter and detects the infrared rays emitted by the object to be detected. An infrared detection element comprising: an infrared waveguide that extends from an opening in the upper part of the cap to an upper part of the black body part and guides infrared rays incident from the opening to the black body part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63316175A JPH02162220A (en) | 1988-12-16 | 1988-12-16 | Infrared-ray detecting element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63316175A JPH02162220A (en) | 1988-12-16 | 1988-12-16 | Infrared-ray detecting element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02162220A true JPH02162220A (en) | 1990-06-21 |
Family
ID=18074129
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63316175A Pending JPH02162220A (en) | 1988-12-16 | 1988-12-16 | Infrared-ray detecting element |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02162220A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100492575B1 (en) * | 2002-08-17 | 2005-06-03 | 엘지전자 주식회사 | Thermopile infrared sensor with narrow visual field |
| US7815367B2 (en) * | 2004-11-16 | 2010-10-19 | Welch Allyn, Inc. | Multi-site infrared thermometer |
| US7857507B2 (en) | 2004-11-16 | 2010-12-28 | Welch Allyn, Inc. | Temperature patch and method of using the same |
| JP2016191585A (en) * | 2015-03-31 | 2016-11-10 | 三菱電機株式会社 | Infrared sensor and infrared sensor array |
| JP2017181031A (en) * | 2016-03-28 | 2017-10-05 | 三菱マテリアル株式会社 | Infrared sensor |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62271082A (en) * | 1986-05-19 | 1987-11-25 | Fujitsu Ltd | Developing system for line drawing pattern of bit map memory |
-
1988
- 1988-12-16 JP JP63316175A patent/JPH02162220A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62271082A (en) * | 1986-05-19 | 1987-11-25 | Fujitsu Ltd | Developing system for line drawing pattern of bit map memory |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100492575B1 (en) * | 2002-08-17 | 2005-06-03 | 엘지전자 주식회사 | Thermopile infrared sensor with narrow visual field |
| US7815367B2 (en) * | 2004-11-16 | 2010-10-19 | Welch Allyn, Inc. | Multi-site infrared thermometer |
| US7857507B2 (en) | 2004-11-16 | 2010-12-28 | Welch Allyn, Inc. | Temperature patch and method of using the same |
| US8079756B2 (en) | 2004-11-16 | 2011-12-20 | Welch Allyn, Inc. | Temperature patch |
| US8591103B2 (en) | 2004-11-16 | 2013-11-26 | Welch Allyn, Inc. | Multi-site infrared thermometer |
| JP2016191585A (en) * | 2015-03-31 | 2016-11-10 | 三菱電機株式会社 | Infrared sensor and infrared sensor array |
| US9612159B2 (en) | 2015-03-31 | 2017-04-04 | Mitsubishi Electric Corporation | Infrared sensor and infrared sensor array |
| JP2017181031A (en) * | 2016-03-28 | 2017-10-05 | 三菱マテリアル株式会社 | Infrared sensor |
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