JPS6239693B2 - - Google Patents
Info
- Publication number
- JPS6239693B2 JPS6239693B2 JP55039205A JP3920580A JPS6239693B2 JP S6239693 B2 JPS6239693 B2 JP S6239693B2 JP 55039205 A JP55039205 A JP 55039205A JP 3920580 A JP3920580 A JP 3920580A JP S6239693 B2 JPS6239693 B2 JP S6239693B2
- Authority
- JP
- Japan
- Prior art keywords
- pellet
- pyroelectric
- support base
- lead wire
- conductive adhesive
- 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
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/10—Radiation pyrometry, e.g. infrared or optical thermometry using electric radiation detectors
- G01J5/34—Radiation pyrometry, e.g. infrared or optical thermometry using electric radiation detectors using capacitors, e.g. pyroelectric capacitors
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
- Radiation Pyrometers (AREA)
Description
【発明の詳細な説明】
本発明は入射赤外線変化量に応じて電荷を発生
する焦電体ペレツトを備えた焦電型赤外線検出素
子に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a pyroelectric infrared detection element equipped with a pyroelectric pellet that generates electric charge in accordance with the amount of change in incident infrared radiation.
従来のこの種焦電型赤外線検出素子では、第１
図に示す如く、両面に表裏面電極１，２を有し入
射赤外線変化量に応じて電荷を発生する焦電体ペ
レツト３を絶縁性支持台４上面に導電性接着剤５
にて接着し、該接着剤側面に裏面電極２の引出し
線６を導電性接着剤７にて取着していた。しかる
に上記接着剤５の層は非常に薄く、従つて接着剤
５側面に引出し線６を取着する工程は非常に困難
であつた。 In the conventional pyroelectric infrared detection element of this kind, the first
As shown in the figure, a pyroelectric pellet 3, which has front and back electrodes 1 and 2 on both sides and generates a charge according to the amount of change in incident infrared rays, is placed on the upper surface of an insulating support 4 with a conductive adhesive 5.
The lead wire 6 of the back electrode 2 was attached to the side surface of the adhesive using a conductive adhesive 7. However, the layer of adhesive 5 is very thin, and therefore the process of attaching the lead wire 6 to the side surface of the adhesive 5 is very difficult.
そこで斯る困難性を除去するために、即ち引出
し線６を除去するために、焦電体ペレツト３を第
２図に示す如く金属性支持台８上面に導電性接着
剤５にて接着し、焦電体ペレツト３と金属性支持
台８とを電気的に結合することにより金属性支持
台８に引出し線６の効果を持たせることが提案さ
れている。しかし乍ら焦電体ペレツト３は一般に
その散逸熱が小である程出力が増大するため、支
持台として熱伝導率の大きな金属を用いることは
焦電体ペレツト３の出力を低下せしめるという欠
点がある。 Therefore, in order to eliminate such difficulty, that is, to remove the lead wire 6, the pyroelectric pellet 3 is adhered to the upper surface of the metal support base 8 using a conductive adhesive 5 as shown in FIG. It has been proposed to electrically connect the pyroelectric pellet 3 and the metal support 8 to give the metal support 8 the effect of the lead wire 6. However, since the output of the pyroelectric pellet 3 generally increases as its dissipated heat decreases, using a metal with high thermal conductivity as the support has the disadvantage of reducing the output of the pyroelectric pellet 3. be.
本発明は斯る点に鑑みてなされるもので、以下
本発明実施例を第３図を参照して詳述する。 The present invention has been made in view of these points, and embodiments of the present invention will be described in detail below with reference to FIG. 3.
９は入射赤外線変化量に応じて電荷を発生する
タンタル酸リチウム（LiTaO3）結晶で形成された
焦電体ペレツトで、該ペレツトの裏面（下面）は
120〜500番の研摩剤又は100〜320番のサンドペー
パーなどで粗面化されている。そして上記ペレツ
ト９は両面にニツケル−クロム（Ni−Cr）蒸着
膜から成る表裏面電極１０，１１を有している。
１２は上記ペレツト９を支持する銅、アルミニウ
ム又は燐青銅などから成る金属性支持台、１３は
上記ペレツト９を支持台１２上に接着する銀ペー
ストから成る導電性接着剤で、該接着剤を介して
上記ペレツト９の裏面電極１１と金属性支持台１
２は電気的に結合され、よつて支持台１２自身が
裏面電極の引出し線の役割を果たす。１４は導電
性接着剤１５にて表面電極１０上に接着された表
面電極１０の引出し線で該引出し線及び上記支持
台１２によつて上記ペレツト９の発生する信号が
外部へ導出される。 9 is a pyroelectric pellet made of lithium tantalate (LiTaO 3 ) crystal that generates electric charge according to the amount of change in incident infrared rays, and the back surface (lower surface) of the pellet is
The surface is roughened with a 120-500 grit abrasive or 100-320 grit sandpaper. The pellet 9 has front and back electrodes 10 and 11 made of nickel-chromium (Ni-Cr) vapor deposited films on both sides.
Reference numeral 12 denotes a metal support made of copper, aluminum or phosphor bronze for supporting the pellet 9, and 13 a conductive adhesive made of silver paste for adhering the pellet 9 onto the support 12. The back electrode 11 of the pellet 9 and the metal support 1
2 are electrically coupled, and therefore the support base 12 itself serves as a lead wire for the back electrode. Reference numeral 14 denotes a lead wire of the front surface electrode 10 bonded to the top surface electrode 10 with a conductive adhesive 15, and a signal generated by the pellet 9 is guided to the outside by the lead wire and the support base 12.
さて、上記ペレツト９を支持台１２上に接着す
るに、まず支持台１２上面に導電性接着剤１３を
薄く塗布する。その後裏面電極１１が支持台１２
上面と対向するようにして上記ペレツト９を支持
台１２上に載置する。この時導電性接着剤１３は
ペレツト９の裏面側の研磨剤などで粗面化された
凹部に盛上がつてくるが、斯る盛上りに対しペレ
ツト９裏面の粗面化は空気泡１６，１６…を形成
するに充分な深さｔの凹部を有するように施され
ている。尚その後導電性接着剤１３を熱硬化する
ために導電性接着剤１３はペレツト９、支持台１
２などと共に加熱される。 Now, in order to adhere the pellet 9 onto the support base 12, a conductive adhesive 13 is first applied thinly to the upper surface of the support base 12. After that, the back electrode 11 is attached to the support base 12.
The pellets 9 are placed on the support stand 12 so as to face the upper surface. At this time, the conductive adhesive 13 rises in the recesses on the back side of the pellet 9 that have been roughened with an abrasive or the like. 16 . After that, in order to heat-cure the conductive adhesive 13, the conductive adhesive 13 is formed into pellets 9 and support base 1.
It is heated together with 2 etc.
従つて、断熱効果を有する空気泡１６，１６…
が形成されるからペレツト９から支持台１２への
熱の散逸を顕著に防止でき、ペレツト９の出力を
増大できる。 Therefore, the air bubbles 16, 16... having a heat insulating effect
is formed, heat dissipation from the pellets 9 to the support base 12 can be significantly prevented, and the output of the pellets 9 can be increased.
以上の説明から明らかな如く、本発明焦電型赤
外線検出素子によれば、焦電体ペレツトの金属性
支持台との対向面を粗面化するという簡単な構造
にて、殊に同一金属性支持台を使用した従来の素
子と比較してペレツトの出力を顕著に増大でき
る。 As is clear from the above description, the pyroelectric infrared detecting element of the present invention has a simple structure in which the surface of the pyroelectric pellet facing the metal supporting base is roughened, and in particular, Pellet output can be significantly increased compared to conventional devices using supports.
更に支持台に裏面電極引出し線としての効果を
併せ持たせて斯る引出し線の取着工程を除去した
から素子の量産性を向上できる。 Furthermore, since the support base also has the effect of serving as a back electrode lead wire, and the step of attaching such a lead wire is eliminated, mass productivity of the device can be improved.
第１図は従来例の焦電型赤外線検出素子の正面
図、第２図は他の従来例素子の正面図、第３図は
本発明実施例焦電型赤外線検出素子の正面図であ
る。
９……焦電体ペレツト、１２……金属性支持
台。
FIG. 1 is a front view of a conventional pyroelectric infrared detecting element, FIG. 2 is a front view of another conventional element, and FIG. 3 is a front view of a pyroelectric infrared detecting element according to an embodiment of the present invention. 9...Pyroelectric pellet, 12...Metallic support.
Claims (1)
電体ペレツト、該ペレツトを支持する金属性支持
台を備えた焦電型赤外線検出素子であつて、上記
ペレツトの上記支持台との対向面を粗面化したこ
とを特徴とする焦電型赤外線検出素子。1. A pyroelectric infrared detection element comprising a pyroelectric pellet that generates electric charge in accordance with the amount of change in incident infrared rays, and a metal support base for supporting the pellet, wherein the surface of the pellet facing the support base is A pyroelectric infrared detection element characterized by a roughened surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3920580A JPS56135133A (en) | 1980-03-26 | 1980-03-26 | Electrofocal-type infrared ray detection element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3920580A JPS56135133A (en) | 1980-03-26 | 1980-03-26 | Electrofocal-type infrared ray detection element |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56135133A JPS56135133A (en) | 1981-10-22 |
| JPS6239693B2 true JPS6239693B2 (en) | 1987-08-25 |
Family
ID=12546622
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3920580A Granted JPS56135133A (en) | 1980-03-26 | 1980-03-26 | Electrofocal-type infrared ray detection element |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56135133A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62109091U (en) * | 1985-12-25 | 1987-07-11 | ||
| JPH02122690U (en) * | 1989-03-18 | 1990-10-08 |
-
1980
- 1980-03-26 JP JP3920580A patent/JPS56135133A/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62109091U (en) * | 1985-12-25 | 1987-07-11 | ||
| JPH02122690U (en) * | 1989-03-18 | 1990-10-08 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS56135133A (en) | 1981-10-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH0298965A (en) | Multielement infrared ray detection sensor | |
| JPS6239693B2 (en) | ||
| JPS6015149Y2 (en) | Pyroelectric infrared detection element | |
| JPS62182643A (en) | Method for mounting dew condensation sensor to curved glass | |
| JPS6132337Y2 (en) | ||
| JP2572864Y2 (en) | Pyroelectric infrared detector | |
| JPS6011477Y2 (en) | Pyroelectric temperature sensing element | |
| JPS6011476Y2 (en) | Pyroelectric infrared detection element | |
| JPS6140929B2 (en) | ||
| JPS6221954Y2 (en) | ||
| JP2742287B2 (en) | Infrared sensor and method of manufacturing the same | |
| JPS6047543B2 (en) | Pyroelectric infrared detector | |
| JPS6132338Y2 (en) | ||
| JPS6025555Y2 (en) | Pyroelectric infrared detection element | |
| JPH0122892B2 (en) | ||
| JPS6047541B2 (en) | infrared detector | |
| JP2753905B2 (en) | Pyroelectric element | |
| JPS6142204B2 (en) | ||
| JP3003943B2 (en) | Gas sensor | |
| JPS6069524A (en) | Infrared detection element | |
| JPS585939Y2 (en) | Pyroelectric temperature sensing element | |
| JPS6035616B2 (en) | Pyroelectric infrared detection element | |
| JPS6240648B2 (en) | ||
| JPS6140930B2 (en) | ||
| JPS5917119A (en) | Infrared ray detector |