JPH051799Y2 - - Google Patents
Info
- Publication number
- JPH051799Y2 JPH051799Y2 JP1985023183U JP2318385U JPH051799Y2 JP H051799 Y2 JPH051799 Y2 JP H051799Y2 JP 1985023183 U JP1985023183 U JP 1985023183U JP 2318385 U JP2318385 U JP 2318385U JP H051799 Y2 JPH051799 Y2 JP H051799Y2
- Authority
- JP
- Japan
- Prior art keywords
- base
- detection element
- vibrating body
- coil
- infrared 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.)
- Expired - Lifetime
Links
- 238000001514 detection method Methods 0.000 claims description 10
- 229910000906 Bronze Inorganic materials 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 239000010974 bronze Substances 0.000 description 2
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 229910000679 solder Inorganic materials 0.000 description 2
- WSMQKESQZFQMFW-UHFFFAOYSA-N 5-methyl-pyrazole-3-carboxylic acid Chemical compound CC1=CC(C(O)=O)=NN1 WSMQKESQZFQMFW-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
Landscapes
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
- Radiation Pyrometers (AREA)
Description
【考案の詳細な説明】 (イ) 産業上の利用分野 本考案は、赤外線検出器に関する。[Detailed explanation of the idea] (b) Industrial application fields The present invention relates to an infrared detector.
(ロ) 従来の技術
焦電型の赤外線検出素子を用いた赤外線検出器
では連続的に出力を得るために入射赤外線を断続
せしめるチヨツパ機構が必要である。(b) Prior Art An infrared detector using a pyroelectric infrared detection element requires a chopper mechanism that interrupts incident infrared rays in order to obtain continuous output.
従来、斯るチヨツパ機構としては特開昭48−
90573号公報に開示されたようにモータと間欠部
をもつ金属円板とからなるもの、あるいは1984年
春季応用物理学会予稿集第677頁1a−Ｉ−７，1a
−Ｉ−８に開示されたようにバイモルフ振動子と
スリツト板とからなるものがある。 Conventionally, such a chipping mechanism was developed in Japanese Patent Application Laid-Open No. 1973-
As disclosed in Publication No. 90573, it consists of a motor and a metal disk with intermittent parts, or 1984 Spring Proceedings of the Japan Society of Applied Physics, pp. 677, 1a-I-7, 1a
There is one consisting of a bimorph resonator and a slit plate, as disclosed in No. 1-1-8.
(ハ) 考案が解決しようとする問題点
然るに、前者の構造では高価でかつ小型化に不
向きであるという問題があり、また後者の構造で
はバイモルフ振動子のヒステリンス特性により、
電圧を印加しない際の初期位置が使用する毎に変
化するという問題があつた。(c) Problems to be solved by the invention However, the former structure has the problems of being expensive and unsuitable for miniaturization, and the latter structure has the problem of being expensive and unsuitable for miniaturization, and the latter structure has the following problems due to the hysteresis characteristics of the bimorph oscillator.
There was a problem in that the initial position when no voltage was applied changed each time it was used.
(ニ) 問題点を解決するための手段
本考案は斯る点に鑑みてなされたもので、その
構成的特徴は基台、該基台の一主面上に配された
焦電形の赤外線検出素子、上記基台上に両端が固
定され、上記赤外線検出素子と略対向する位置に
透光部を有するコ字形の振動体、該振動体の上記
基台の一主面と略平行となる部分に巻回されたコ
イル、該コイルに近接配置された磁石、上記赤外
線検出素子と略対向する位置に透光部を有する対
向体、上記各部品を被うように上記基台上に装着
され、上記赤外線検出素子と対向する位置に開口
が穿設されたキヤツプを有することにある。(d) Means for solving the problems The present invention was made in view of the above points, and its structural features include a base and a pyroelectric infrared ray arranged on one main surface of the base. a detection element, a U-shaped vibrating body having both ends fixed on the base, and having a transparent portion at a position substantially facing the infrared detection element, the vibrating body being approximately parallel to one main surface of the base; A coil wound around the part, a magnet placed close to the coil, a counter body having a transparent part at a position substantially facing the infrared detection element, and a counter body mounted on the base so as to cover each of the parts. The cap has an opening formed at a position facing the infrared detecting element.
(ホ) 作用
斯る構成では上記コイルに電流を印加すること
により上記振動板をその延在方向に振動せしめ、
上記振動板の透光部と対向体の透光部との重畳及
び非重畳を繰返させることにより、赤外線検出素
子への赤外線入射を断続せしめることができる。(e) Effect In such a configuration, the diaphragm is vibrated in its extending direction by applying a current to the coil,
By repeating overlapping and non-overlapping of the transparent portion of the diaphragm and the transparent portion of the opposing body, it is possible to intermittent the incidence of infrared rays on the infrared detecting element.
(ヘ) 実施例
第１図乃至第３図は本考案の一実施例を示し、
１は例えばセラミツクス等の絶縁材量からなる基
台、２は該基台上に固着された銅、燐青銅等から
なる金属性支持台、３は該支持台上に固着された
焦電型の赤外線検出素子であり、該素子は例えば
タンタル酸リチウム（LitaO3）単結晶からなる。
４はインピーダンス変換回路であり、該回路は上
記素子３が高抵抗であるためこれを低抵抗に変換
する。５は上記素子３及び回路４を覆う金属性の
シールド体であり、該シールド体の上記素子３と
対向する天面には開口６が穿設されている。７は
対向体であり、該対向体は断面Ｌ字状をなし、そ
の一端がハンダ等により基台１上に固着されると
共に上記素子３と対向する位置には第１図中紙面
垂直方向に延在するスリツト状の複数の透光部
８，８…が穿設されている。９は振動体であり、
該振動体はスリツト状の複数の透光部１０，１０
…が穿設された主面部１１、該主面の上記透光部
１０の延在方向と平行となる一辺より延出する幅
狭の延在部１２、該延在部の一端より垂下する第
１の支持部１３及び上記主面部１１の上記延在部
１２が延出する辺に対向する辺より上記第１の支
持部１３と平行に垂下する第２の支持部１４を有
し、上記透光部１０，１０…が上記素子３と対向
するように第１、第２の支持部１３，１４が基台
１上にハンダ等により固着される。尚、斯る振動
体９は厚さ0.05mmの燐青銅からなり、主面部１
１、延在部１２、第１、第２の支持部１３，１４
の幅（B1，B2，B3，B4）×長さ（L1，L2，L3，
L4）は夫々２mm×30mm、１mm×５mm、１mm×10
mm、１mm×10mmである。また上記対向体７の透光
部８，８…及び振動体９の透光部１０，１０…の
幅ｈは共に100μmである。１５は上記振動体９の
延在部１２に巻回されたコイルであり、該コイル
は直径0.05mmのエナメル線を1000巻したものであ
る。１６は中空磁束が約1000Kガウスの内径約４
mm…の両端を第２図に図示する如くNSに着磁さ
れた円筒形の磁石…であり、該磁石の円筒内には
上記延在部１２が挿通されるように上記磁石は支
持体１７上に固定されている。１８は上記基台１
上に装着された各部品を覆うように基台１に装着
されたキヤツプであり、該キヤツプの上記素子３
と対向する位置には開口１９が穿設されている。(f) Example Figures 1 to 3 show an example of the present invention.
1 is a base made of an insulating material such as ceramics, 2 is a metal support made of copper, phosphor bronze, etc. fixed on the base, and 3 is a pyroelectric type support fixed on the support. This is an infrared detection element, and the element is made of, for example, lithium tantalate (LitaO 3 ) single crystal.
4 is an impedance conversion circuit, which converts the high resistance of the element 3 to a low resistance. Reference numeral 5 denotes a metallic shield body that covers the element 3 and the circuit 4, and an opening 6 is formed in the top surface of the shield body facing the element 3. Reference numeral 7 denotes an opposing body, which has an L-shaped cross section, and one end of which is fixed onto the base 1 with solder or the like, and at a position facing the element 3, there is a plate extending in the direction perpendicular to the plane of the paper in FIG. A plurality of extending slit-shaped light-transmitting portions 8, 8, . . . are provided. 9 is a vibrating body;
The vibrating body has a plurality of slit-shaped transparent parts 10, 10.
... is perforated, a narrow extending portion 12 extending from one side of the main surface parallel to the extending direction of the transparent portion 10, and a narrow extending portion 12 extending from one end of the extending portion. 1 support part 13 and a second support part 14 that hangs down in parallel to the first support part 13 from a side opposite to the side from which the extension part 12 of the main surface part 11 extends; First and second supporting parts 13 and 14 are fixed onto the base 1 by solder or the like so that the optical parts 10, 10, . . . face the element 3. The vibrating body 9 is made of phosphor bronze with a thickness of 0.05 mm, and the main surface portion 1
1. Extension portion 12, first and second support portions 13, 14
width (B 1 , B 2 , B 3 , B 4 ) x length (L 1 , L 2 , L 3 ,
L 4 ) are respectively 2mm x 30mm, 1mm x 5mm, and 1mm x 10
mm, 1 mm x 10 mm. Further, the width h of the light-transmitting portions 8, 8, . . . of the opposing body 7 and the light-transmitting portions 10, 10, . A coil 15 is wound around the extending portion 12 of the vibrating body 9, and the coil is made of 1000 turns of enamelled wire with a diameter of 0.05 mm. 16 has a hollow magnetic flux of about 1000K Gauss and an inner diameter of about 4
The magnet is a cylindrical magnet whose both ends are magnetized to NS as shown in FIG. Fixed on top. 18 is the above base 1
It is a cap attached to a base 1 so as to cover each component attached thereto, and the above-mentioned elements 3 of the cap are
An opening 19 is bored at a position facing the.
斯る本実施例装置では上記コイル１５に約
20mAの電流を印加することにより上記振動体９
が第１図中矢印ＡもしくはＢ方向に変位するの
で、上記コイル１５へ20mAのパルスを連続して
印加するか、もしくは振幅10mAの交流波を印加
することにより上記振動体９の上記Ａ，Ｂ方向に
交互に振動せしめることが可能となる。また斯る
振動により上記振動体９の透光部１０，１０…と
上記対向体７の透光部８，８…とが互いに重畳す
る状態と重畳しない状態とが周期的に繰返される
こととなり、その結果上記赤外線検出素子３への
赤外線入射を断続せしめることとなる。 In this embodiment, the coil 15 has approximately
By applying a current of 20mA, the vibrating body 9
is displaced in the direction of arrow A or B in FIG. It is possible to vibrate alternately in different directions. Also, due to such vibrations, the transparent parts 10, 10, . . . of the vibrating body 9 and the transparent parts 8, 8, . As a result, the incidence of infrared rays on the infrared detecting element 3 is interrupted.
第４図は本考案の第２の実施例を示し、第１の
実施例との相違点は、第１の実施例における対向
体７を振動体９と相似形とすると共にその一部に
コイル２０を巻回し、斯る巻回されたコイル部分
を第２の円筒形の磁石２１内に挿通したものであ
る。尚、第４図中第１図と同一箇所には同一番号
を符して説明を省略する。 FIG. 4 shows a second embodiment of the present invention, and the difference from the first embodiment is that the opposing body 7 in the first embodiment has a similar shape to the vibrating body 9, and a part of it has a coil. 20 is wound, and the thus wound coil portion is inserted into a second cylindrical magnet 21. Note that the same parts in FIG. 4 as in FIG. 1 are denoted by the same numbers, and explanations thereof will be omitted.
斯る構成において、上記振動体９と対向体７と
をその振動方向が互いに反対となるように振動せ
しめるようにすれば、上記振動体９の振動幅を略
半減できる。 In such a configuration, if the vibrating body 9 and the opposing body 7 are made to vibrate so that their vibration directions are opposite to each other, the vibration width of the vibrating body 9 can be approximately halved.
(ト) 考案の効果
本考案の赤外線検出器ではチヨツパ機構をコイ
ルと磁石とから構成しているので、モータ等を用
いる場合に比して小型化が可能であり、またバイ
モルフ振動子を用いる場合のように初期位置が変
動することもない。(G) Effects of the invention In the infrared detector of the invention, the chopper mechanism is composed of a coil and a magnet, so it can be made smaller compared to the case where a motor or the like is used, and when a bimorph oscillator is used. The initial position does not change as in .
第１図乃至第３図は本考案の一実施例を示し、
第１図は部分断面側面図、第２図は部分断面上面
図、第３図は要部拡大斜視図であり、第４図は他
の実施例を示す部分断面側面図である。
１……基台、３……赤外線検出素子、７……対
向体、８……透光部、９……振動体、１０……透
光部、１５……コイル、１６……磁石、１７……
キヤツプ。
1 to 3 show an embodiment of the present invention,
FIG. 1 is a partially sectional side view, FIG. 2 is a partially sectional top view, FIG. 3 is an enlarged perspective view of essential parts, and FIG. 4 is a partially sectional side view showing another embodiment. DESCRIPTION OF SYMBOLS 1... Base, 3... Infrared detection element, 7... Opposing body, 8... Transparent part, 9... Vibrating body, 10... Transparent part, 15... Coil, 16... Magnet, 17 ……
Cap.
Claims (1)
外線検出素子、上記基台上に両端が固定され、上
記赤外線検出素子と略対抗する位置に透光部を有
するコ字形の振動体、該振動体の上記基台の一主
面と略平行となる部分に巻回されたコイル、該コ
イルに近接配置された磁石、上記コイルにパルス
電流又は交流を印加して振動体に振動を生じさせ
る電源、上記赤外線検出素子と略対抗する位置に
透光部を有する対向体、上記各部品を被うように
上記基台上に装着され、上記赤外線検出素子と対
向する位置に、開口が穿設されたキヤツプを有す
ることを特徴とする赤外線検出器。 a base, a pyroelectric infrared detection element disposed on one principal surface of the base, a U-shape having both ends fixed on the base and a transparent portion at a position substantially opposing the infrared detection element; a vibrating body, a coil wound around a portion of the vibrating body that is substantially parallel to one main surface of the base, a magnet placed close to the coil, and a vibrating body by applying a pulse current or alternating current to the coil. a power source that generates vibrations; a counter body having a light-transmitting part at a position substantially opposite to the infrared detection element; mounted on the base so as to cover each of the above components, and located at a position opposite to the infrared detection element; An infrared detector characterized in that it has a cap with an opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985023183U JPH051799Y2 (en) | 1985-02-20 | 1985-02-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985023183U JPH051799Y2 (en) | 1985-02-20 | 1985-02-20 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61139439U JPS61139439U (en) | 1986-08-29 |
| JPH051799Y2 true JPH051799Y2 (en) | 1993-01-18 |
Family
ID=30516187
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985023183U Expired - Lifetime JPH051799Y2 (en) | 1985-02-20 | 1985-02-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH051799Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6039916B2 (en) | 2012-04-23 | 2016-12-07 | 株式会社コガネイ | Potential measurement device |
-
1985
- 1985-02-20 JP JP1985023183U patent/JPH051799Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61139439U (en) | 1986-08-29 |
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