JPH0122892B2 - - Google Patents
Info
- Publication number
- JPH0122892B2 JPH0122892B2 JP55136906A JP13690680A JPH0122892B2 JP H0122892 B2 JPH0122892 B2 JP H0122892B2 JP 55136906 A JP55136906 A JP 55136906A JP 13690680 A JP13690680 A JP 13690680A JP H0122892 B2 JPH0122892 B2 JP H0122892B2
- Authority
- JP
- Japan
- Prior art keywords
- pellet
- lead
- lead body
- contact
- package
- 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)
- Radiation Pyrometers (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (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赤外線検出器に関す
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an infrared detector equipped with a pyroelectric pellet that generates a charge depending on the amount of change in incident infrared radiation.
第１図は従来のこの種赤外線検出器を示し、１
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）結晶等で形成さた焦
電体ペレツト、２及び３は該ペレツトの表、裏面
にニクロム（Ni−Cr）の真空蒸着膜にて形成さ
れた表、裏面電極、４は上記ペレツト１を支持す
る銅、アルミニウム又は燐青銅等から成る金属性
支持台、５は上記ペレツト１を支持台４に接着す
る銀ペーストから成る導電性接着剤、６は金属性
ヘツダ６ａ及び金属性キヤツプ６ｂから成るTO
−５型のパツケージで、該パツケージ内において
ヘツダ６ａ上面にはペレツト１を支持した支持台
４が導電性接着剤７にて接着されている。８は上
記キヤツプ６ｂのペレツト１前面に穿たれた開
口、９はSi又はGeから成り上記開口８を閉塞す
る赤外線透過用窓材、１０は該窓材を上記キヤツ
プ６ｂに接着するための絶縁性接着剤、１１は上
記ヘツダ６ａに絶縁されて植設された第１外部端
子、１２は両端が該端子と上記表面電極２との
各々にボンデイングされた金線で、該金線により
上記第１外部端子１１は表面電極２に電気的に連
なる。１３は上記導電性接着剤５，７及び支持台
４を介して上記裏面電極３に電気的に連なるべく
上記ヘツダ６ａに直接植設された第２外部端子で
ある。従つて、上記ペレツト１からの信号は上記
第１及び第２外部端子１１，１３により外部へ導
出される。 Figure 1 shows a conventional infrared detector of this kind, with 1
2 and 3 are pyroelectric pellets formed from lithium tantalate (LiTaO 3 ) crystals, etc., which generate charges according to the amount of change in incident infrared rays, and nichrome (Ni-Cr) is vacuum-deposited on the front and back surfaces of the pellets. The front and back electrodes are formed of a film; 4 is a metallic support made of copper, aluminum, phosphor bronze, etc. that supports the pellet 1; 5 is a conductive material made of silver paste that adheres the pellet 1 to the support 4; 6 is a TO consisting of a metal header 6a and a metal cap 6b.
-5 type package, in which a support base 4 supporting pellets 1 is adhered to the upper surface of a header 6a with a conductive adhesive 7. 8 is an opening made in the front surface of the pellet 1 of the cap 6b, 9 is an infrared transmitting window material made of Si or Ge and closes the opening 8, and 10 is an insulating material for bonding the window material to the cap 6b. An adhesive 11 is a first external terminal insulated and implanted in the header 6a, and 12 is a gold wire whose both ends are bonded to the terminal and the surface electrode 2, respectively. The external terminal 11 is electrically connected to the surface electrode 2. A second external terminal 13 is directly implanted in the header 6a so as to be electrically connected to the back electrode 3 via the conductive adhesives 5, 7 and the support base 4. Therefore, the signal from the pellet 1 is led out through the first and second external terminals 11 and 13.
処で、上記金属性のパツケージ６は高価であ
り、又上記窓材９で上記キヤツプ６ｂの開口８を
閉塞すべく窓材９をキヤツプ６ｂに接着する工程
及び上記金線１２を表面電極２にボンデイングす
る工程など工程数が多く、従つて赤外線検出器が
コスト高となつていた。 However, the metal package 6 is expensive, and the step of adhering the window material 9 to the cap 6b to close the opening 8 of the cap 6b with the window material 9 and the step of attaching the gold wire 12 to the surface electrode 2 are required. Infrared detectors require a large number of steps such as bonding, which makes infrared detectors expensive.
本発明は斯る点に鑑みてなされたもので、以下
本発明実施例を第２図乃至第５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 FIGS. 2 to 5.
１４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、１５及び１６は該ペレツト
の表、裏面にニクロム（Ni−Cr）の真空蒸着に
て形成された表、裏面電極、１７は上記ペレツト
１４を支持する銅、アルミニウム又は燐青銅等か
ら成る金属性支持台、１８は上記ペレツト１４を
支持台１７に接着する銀ペーストから成る導電性
接着剤、１９は矩形状の接触部１９ａ及びリード
部１９ｂから成る金属性の裏面リード体で、該リ
ード体の矩形状の接触部１９ａ中央には上記ペレ
ツト１４を支持した支持台１７が導電性接着剤２
０にて接着されている。２１は燐青銅等から成る
金属性の表面リード体で、該リード体において、
２２は中央部に円形開口２３が穿設され上記表面
電極１５と接触するための接触部、２４ａ及び２
４ｂは夫々接触部に対し傾斜して形成された第１
及び第２傾斜部、２５ａ及び２５ｂは夫々上記接
触部２２に対し平行に且つ上記第１及び第２傾斜
部２４ａ，２４ｂより幅広にして斯る傾斜部２４
ａ，２４ｂの一端に形成された第１及び第２平行
部、２６は該第２平行部に形成されたリード部で
ある。２７はポリエチレン等から成る樹脂パツケ
ージで、該パツケージの一平面には開口２８が形
成され且つ他平面の一部は帯状にして厚さ100〜
200μｍと極めて薄くなつている。斯る部分は赤
外線透過窓部２９となつている。そして、上記パ
ツケージ２７内には上記ペレツト１４が表、裏面
リード体２１，１９で挾持された状態で表、裏面
リード体２１，１９と共に嵌入固定されている。
尚、表、裏面リード体２１，１９の夫々のリード
部２６，１９ｂの一部はパツケージ２７の開口２
８から外部に突出している。斯る場合、表面リー
ド体２１の接触部２２は表面電極１９と接触し、
第１及び第２平行部２５ａ，２５ｂはパツケージ
２７の赤外線透過窓部２９を有する平面において
斯る窓部２９以外の部分に当接している。ここ
に、上記表面リード２１は弾性があり、その弾性
力にてペレツト１４及びパツケージ２７を押圧し
ており、従つてパツケージ２７内にてペレツト１
４等が不所望に動くことがない。３０はエポキシ
等の樹脂から成り上記パツケージ２７内の開口２
８を封じるための封止部材である。 14 is a pyroelectric pellet formed of lithium tantalate (LiTaO 3 ) crystal that generates electric charge according to the amount of change in incident infrared rays; 15 and 16 are vacuum-deposited nichrome (Ni-Cr) on the front and back surfaces of the pellets. 17 is a metallic support made of copper, aluminum, phosphor bronze, etc., which supports the pellet 14; 18 is a conductive material made of silver paste, which adheres the pellet 14 to the support 17. The adhesive 19 is a metal back lead body consisting of a rectangular contact part 19a and a lead part 19b, and in the center of the rectangular contact part 19a of the lead body, a support base 17 supporting the pellet 14 is conductive. adhesive 2
It is glued at 0. 21 is a metallic surface lead body made of phosphor bronze or the like, and in this lead body,
Reference numeral 22 includes a contact portion 24a and 2 having a circular opening 23 in the center for contacting the surface electrode 15.
4b are first grooves formed at an angle with respect to the contact portions.
The second inclined parts 25a and 25b are respectively parallel to the contact part 22 and wider than the first and second inclined parts 24a and 24b.
The first and second parallel portions 26 are formed at one ends of a and 24b, and 26 is a lead portion formed on the second parallel portions. Reference numeral 27 is a resin package made of polyethylene or the like, and an opening 28 is formed in one plane of the package, and a part of the other plane is formed into a band shape with a thickness of 100 mm to 100 mm.
It is extremely thin at 200 μm. This portion serves as an infrared transmitting window portion 29. The pellet 14 is inserted and fixed into the package 27 together with the front and rear lead bodies 21 and 19 while being held between the front and rear lead bodies 21 and 19.
Incidentally, a portion of the lead portions 26 and 19b of the front and back lead bodies 21 and 19 are connected to the opening 2 of the package cage 27.
It protrudes outward from 8. In such a case, the contact portion 22 of the surface lead body 21 contacts the surface electrode 19,
The first and second parallel portions 25a and 25b are in contact with a portion of the package 27 other than the window portion 29 in a plane having the infrared transmitting window portion 29. Here, the surface lead 21 has elasticity and presses the pellet 14 and the package 27 with its elastic force, so that the pellet 1 inside the package 27 is pressed against the pellet 14 and the package 27.
The 4th class does not move undesirably. 30 is made of resin such as epoxy, and the opening 2 in the package 27 is
This is a sealing member for sealing 8.
従つて、表面リード体２１は表面電極１５に電
気的に連なると共に、裏面リード体１９は導電性
接着剤１８，２０及び支持台１７を介して裏面電
極１６に電気的に連なるから、ペレツト１４から
の信号は表、裏面リード体２１，１９の夫々のリ
ード部２６，１９ｂにより外部へ導出される。 Therefore, since the front lead body 21 is electrically connected to the front electrode 15 and the back lead body 19 is electrically connected to the back electrode 16 via the conductive adhesives 18 and 20 and the support base 17, The signals are led to the outside by lead portions 26 and 19b of the front and back lead bodies 21 and 19, respectively.
以上の説明から明らかな如く、本発明によれれ
ば、表、裏面電極を有し、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、該ペレツト
を支持する金属性支持台、上記ペレツトの表面電
極と導電接触する表面リード体、上記支持台を介
して上記ペレツトの裏面電極と導電接触する裏面
リード体、上記ペレツトを上記表、裏面リード体
で挾持した状態にて上記ペレツトを上記表、裏面
リード体と共に内部に嵌入固定せしめた樹脂パツ
ケージを備えたから、パツケージ自体を安価にで
き且つ製造工程を減少でき、よつて安価な赤外線
検出器を提供できる。 As is clear from the above description, according to the present invention, there are provided a pyroelectric pellet having front and back electrodes and generating electric charge according to the amount of change in incident infrared rays, a metallic support base for supporting the pellet, and a metal support base for supporting the pellet. A front lead body is in conductive contact with the front electrode of the pellet, a back lead body is in conductive contact with the back electrode of the pellet via the support base, and the pellet is held between the front and back lead bodies, and the pellet is Since a resin package is provided which is fitted and fixed inside together with the front and back lead bodies, the package itself can be made inexpensive and the manufacturing process can be reduced, thereby making it possible to provide an inexpensive infrared detector.
第１図は従来の赤外線検出器の断面図、第２図
乃至第５図は本発明実施例赤外線検出器を示し、
第２図は断面図、第３図は裏面リード体の平面
図、第４図は表面リード体の平面図、第５図ａ及
びｂは夫々樹脂パツケージの平面図及び側面図で
ある。
１４……焦電体ペレツト、１７……金属性支持
台、１９……裏面リード体、２１……表面リード
体、２７……樹脂パツケージ。
FIG. 1 is a sectional view of a conventional infrared detector, and FIGS. 2 to 5 show infrared detectors according to embodiments of the present invention.
2 is a sectional view, FIG. 3 is a plan view of the back lead body, FIG. 4 is a plan view of the front lead body, and FIGS. 5a and 5b are a plan view and a side view, respectively, of the resin package. 14...Pyroelectric pellet, 17...Metal support base, 19...Back lead body, 21...Front lead body, 27...Resin package.
Claims (1)
じて電荷を発生する焦電体ペレツト、該ペレツト
を支持する金属性支持台、上記ペレツトの表面電
極と導電接触する接触部と該接触部に一体に形成
されたリード部とを有する表面リード体、上記支
持台を介して上記ペレツトの裏面電極と導電接触
する接触部と該接触部に一体に形成されたリード
部とを有する裏面リード体、一面に開口部を有す
る樹脂パツケージを備え、上記ペレツトを上記
表、裏面リード体で挾持した状態にて上記ペレツ
トを上記表、裏面リード体と共に上記樹脂パツケ
ージ内に嵌入固定し、上記表、裏面リード体のそ
れぞれのリード部の一部の上記樹脂パッケージの
開口部から外部に突出させて上記ペレツトからの
信号を外部へ導出することを特徴とする赤外線検
出器。1. A pyroelectric pellet that has front and back electrodes and generates a charge depending on the amount of change in incident infrared rays, a metal support that supports the pellet, a contact portion that conductively contacts the surface electrode of the pellet, and the contact portion. a front lead body having a lead part integrally formed with the pellet, and a back lead body having a contact part making conductive contact with the back electrode of the pellet via the support base, and a lead part integrally formed with the contact part. , is provided with a resin package having an opening on one side, and with the pellet being held between the front and back lead bodies, the pellet is inserted and fixed into the resin package together with the front and back lead bodies, and An infrared detector characterized in that a part of each lead portion of the lead body is made to protrude to the outside from an opening of the resin package to derive a signal from the pellet to the outside.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55136906A JPS5761924A (en) | 1980-09-30 | 1980-09-30 | Infrared ray detector |
| SE8103021A SE8103021L (en) | 1980-09-30 | 1981-05-14 | HAND-DRIVEN BARIUM INFUSION DEVICE |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55136906A JPS5761924A (en) | 1980-09-30 | 1980-09-30 | Infrared ray detector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5761924A JPS5761924A (en) | 1982-04-14 |
| JPH0122892B2 true JPH0122892B2 (en) | 1989-04-28 |
Family
ID=15186329
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP55136906A Granted JPS5761924A (en) | 1980-09-30 | 1980-09-30 | Infrared ray detector |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPS5761924A (en) |
| SE (1) | SE8103021L (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3618732A1 (en) * | 1985-09-11 | 1987-03-19 | Siemens Ag | SENSOR ELEMENT ARRANGEMENT IN A HOLDING FRAME FOR A PYRODETECTOR AND METHOD FOR THE PRODUCTION THEREOF |
| GB2215513B (en) * | 1988-03-02 | 1991-02-06 | Philips Electronic Associated | Pyroelectric infra-red detectors and their method of manufacture |
| JP2578963B2 (en) * | 1989-01-06 | 1997-02-05 | 松下電器産業株式会社 | Pyroelectric sensor and thermal device with pyroelectric sensor |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5542196U (en) * | 1978-09-13 | 1980-03-18 |
-
1980
- 1980-09-30 JP JP55136906A patent/JPS5761924A/en active Granted
-
1981
- 1981-05-14 SE SE8103021A patent/SE8103021L/en not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5761924A (en) | 1982-04-14 |
| SE8103021L (en) | 1982-03-27 |
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