JPH0682306A - Infrared ray detector - Google Patents

Infrared ray detector

Info

Publication number
JPH0682306A
JPH0682306A JP4235727A JP23572792A JPH0682306A JP H0682306 A JPH0682306 A JP H0682306A JP 4235727 A JP4235727 A JP 4235727A JP 23572792 A JP23572792 A JP 23572792A JP H0682306 A JPH0682306 A JP H0682306A
Authority
JP
Japan
Prior art keywords
pyroelectric
heat
attached
transmitted
detectors
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
Application number
JP4235727A
Other languages
Japanese (ja)
Inventor
Kazutaka Ochiai
千貴 落合
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Murata Manufacturing Co Ltd
Original Assignee
Murata Manufacturing Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Murata Manufacturing Co Ltd filed Critical Murata Manufacturing Co Ltd
Priority to JP4235727A priority Critical patent/JPH0682306A/en
Publication of JPH0682306A publication Critical patent/JPH0682306A/en
Pending legal-status Critical Current

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Abstract

PURPOSE:To prevent malfunction to be caused by heat transmitted to a pyroelectric element from a support board and lowering of sensitivity of a pyroelectric detection part by sticking the lower face of a center part between two pyroelectric detection parts of the pyroelectric element on the upper face of a projection part provided on the support board. CONSTITUTION:Heat applied to one side of a support board 2 is transmitted to a pyroelectric element 1 through a projection part 2a. At this time, because the projection part 2a is stuck on the center part between two pyroelectric detection parts 11, 1b, heat transmission facility is equalized in the two pyroelectric detection parts 11, 1b, which are not mutually unbalanced. Therefor, malfunction does not occur. In addition, the heat applied to one detection part 1a is transmitted to the other detection part 1b through the element l and it is difficult to transmit the heat because it is transmitted from the center part of the two detection parts 1a, 1b to the projection part 2a. Accordingly lowering of sensitivity can be prevented.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】この発明は、赤外線検出装置に関
し、さらに詳しくは、誤動作を防止できると共に感度を
向上できる赤外線検出装置に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an infrared detecting device, and more particularly to an infrared detecting device capable of preventing malfunction and improving sensitivity.

【0002】[0002]

【従来の技術】図7は、従来の赤外線検出装置の一例を
示す上面図である。また、図8は、その正面図である。
この赤外線検出装置700において、1は、1枚の長方
形の焦電体板に2つの焦電検出部1a,1bを設けた焦
電エレメントである。焦電エレメント1の大きさは、
5.2×2.6mmである。厚さは、130μmである。
72は、支持基板であり、中央に凹部72aを有する。
支持基板72の直径は、6mmである。厚さは、1.0
mmである。凹部72aの幅は4.8mm、深さは0.5
mmである。焦電エレメント1の焦電検出部1a,1b
の下面電極は、銀ペーストにより支持基板72に貼着さ
れている。
2. Description of the Related Art FIG. 7 is a top view showing an example of a conventional infrared detecting device. Further, FIG. 8 is a front view thereof.
In this infrared detection device 700, reference numeral 1 is a pyroelectric element in which two pyroelectric detection portions 1a and 1b are provided on one rectangular pyroelectric plate. The size of the pyroelectric element 1 is
It is 5.2 × 2.6 mm. The thickness is 130 μm.
72 is a support substrate, and has a recess 72a in the center.
The diameter of the support substrate 72 is 6 mm. Thickness is 1.0
mm. The recess 72a has a width of 4.8 mm and a depth of 0.5.
mm. Pyroelectric detectors 1a and 1b of the pyroelectric element 1
The lower surface electrode of 1 is attached to the supporting substrate 72 with silver paste.

【0003】[0003]

【発明が解決しようとする課題】上記従来の赤外線検出
装置700では、外部からの熱が支持基板72を介して
焦電エレメント1に伝わるのを抑制するために、支持基
板72の中央に凹部72aを設け、支持基板72と焦電
エレメント1の接合面積を少なくしている。しかし、図
8にαで示すように、支持基板72の片側に加わった熱
が、一方の焦電検出部1aには伝わりやすく,他方の焦
電検出部1bには伝わりにくく,不平衡となるため、誤
動作を生じる問題点がある。また、図8にβで示すよう
に、一方の焦電検出部1aの熱が、焦電体板を通って、
他方の焦電検出部1bに伝わってしまうため、感度が低
下する問題点がある。そこで、この発明の目的は、支持
基板から焦電エレメントに伝わる熱による誤動作を防止
し、且つ、焦電検出部1a,1b間で熱が伝わることに
よる感度の低下を防止できるようにした赤外線検出装置
を提供することにある。
In the conventional infrared detecting device 700 described above, in order to prevent heat from the outside from being transferred to the pyroelectric element 1 through the supporting substrate 72, a recess 72a is formed in the center of the supporting substrate 72. Is provided to reduce the joint area between the supporting substrate 72 and the pyroelectric element 1. However, as indicated by α in FIG. 8, the heat applied to one side of the support substrate 72 is easily transferred to the pyroelectric detection unit 1a on one side, is difficult to transfer to the pyroelectric detection unit 1b on the other side, and is unbalanced. Therefore, there is a problem that malfunction occurs. Further, as indicated by β in FIG. 8, the heat of one pyroelectric detector 1a passes through the pyroelectric plate,
Since it is transmitted to the other pyroelectric detector 1b, there is a problem that the sensitivity is lowered. Therefore, an object of the present invention is to prevent an erroneous operation due to heat transmitted from the supporting substrate to the pyroelectric element and to prevent a decrease in sensitivity due to heat being transmitted between the pyroelectric detectors 1a and 1b. To provide a device.

【0004】[0004]

【課題を解決するための手段】第1の観点では、この発
明は、1枚の焦電体板に2つの焦電検出部を設けた焦電
エレメントを支持基板に貼着してなる赤外線検出装置に
おいて、支持基板の上面に凸部を設け、その凸部の上面
に、焦電エレメントの2つの焦電検出部間の中央部分の
下面を貼着したことを特徴とする赤外線検出装置を提供
する。
According to a first aspect of the present invention, the present invention provides infrared detection in which a pyroelectric element having two pyroelectric detectors provided on one pyroelectric plate is attached to a support substrate. An infrared detection device, characterized in that a convex portion is provided on an upper surface of a supporting substrate, and a lower surface of a central portion between two pyroelectric detection portions of a pyroelectric element is attached to an upper surface of the convex portion. To do.

【0005】第2の観点では、この発明は、平板の支持
基板の上面にチップ抵抗を貼着し、そのチップ抵抗の上
面に、1枚の焦電体板に2つの焦電検出部を設けた焦電
エレメントの前記2つの焦電検出部間の中央部分の下面
を貼着したことを特徴とする赤外線検出装置を提供す
る。
According to a second aspect of the present invention, in the present invention, a chip resistor is attached to the upper surface of a flat support substrate, and one pyroelectric plate is provided with two pyroelectric detectors on the upper surface of the chip resistor. Also provided is an infrared detection device characterized in that a lower surface of a central portion between the two pyroelectric detection portions of the pyroelectric element is attached.

【0006】[0006]

【作用】第1の観点によるこの発明の赤外線検出装置で
は、支持基板に設けた凸部に、焦電エレメントの2つの
焦電検出部間の中央部分を貼着する。このため、支持基
板から焦電エレメントへの熱の伝わりやすさは、2つの
焦電検出部で同等となり,不平衡とならないため、誤動
作を生じない。また、2つの焦電検出部間の中央部分が
支持基板に貼着されているから、焦電検出部1a,1b
の一方から他方に焦電体板を通して伝わろうとする熱
が、前記中央部分から支持基板の凸部に逃げるようにな
り、伝わりにくくなる。そこで、感度の低下が防止され
る。
In the infrared detecting device of the present invention according to the first aspect, the central portion between the two pyroelectric detecting portions of the pyroelectric element is attached to the convex portion provided on the supporting substrate. Therefore, the heat is easily transferred from the supporting substrate to the pyroelectric element in the two pyroelectric detectors, and the two pyroelectric detectors do not become unbalanced, so that no malfunction occurs. Further, since the central portion between the two pyroelectric detectors is attached to the support substrate, the pyroelectric detectors 1a and 1b are attached.
The heat that tries to transfer from one side to the other side through the pyroelectric plate escapes from the central portion to the convex portion of the support substrate, and becomes difficult to transfer. Therefore, a decrease in sensitivity is prevented.

【0007】第2の観点によるこの発明の赤外線検出装
置では、支持基板にチップ抵抗を貼着し、そのチップ抵
抗の上に、焦電エレメントの2つの焦電検出部間の中央
部分を貼着する。このため、支持基板からチップ抵抗を
介して焦電エレメントへ伝わる熱の伝わりやすさは、2
つの焦電検出部で同等となり,不平衡とならないため、
誤動作を生じない。また、2つの焦電検出部間の中央部
分がチップ抵抗に貼着されているから、焦電検出部1
a,1bの一方から他方に焦電体板を通して伝わろうと
する熱が、前記中央部分からチップ抵抗に逃げるように
なり、伝わりにくくなる。そこで、感度の低下が防止さ
れる。さらに、平板の支持基板を使えるので、コストダ
ウンできる。
In the infrared detecting device of the present invention according to the second aspect, a chip resistor is attached to a supporting substrate, and a central portion between two pyroelectric detecting portions of the pyroelectric element is attached onto the chip resistor. To do. For this reason, the heat transmitted from the supporting substrate to the pyroelectric element through the chip resistor is easily transferred by 2
Since the two pyroelectric detectors are equivalent and do not become unbalanced,
No malfunction occurs. Further, since the central portion between the two pyroelectric detectors is attached to the chip resistor, the pyroelectric detector 1
The heat that is going to be transferred from one of the a and 1b to the other through the pyroelectric plate will escape from the central portion to the chip resistance, and it will be difficult to transfer. Therefore, a decrease in sensitivity is prevented. Further, since a flat support substrate can be used, the cost can be reduced.

【0008】[0008]

【実施例】以下、図に示す実施例によりこの発明をさら
に詳細に説明する。なお、これによりこの発明が限定さ
れるものではない。 −第1実施例− 図1は、この発明の第1実施例の赤外線検出装置の上面
図である。また、図2は、その正面図である。この赤外
線検出装置100において、1は、1枚の長方形の焦電
体板に2つの焦電検出部1a,1bを設けた焦電エレメ
ントである。焦電エレメント1の大きさは、5.2×2.
6mmである。厚さは、130μmである。2は、支持
基板であり、中央に凸部2aを有する。支持基板2の材
質は、セラミックス,ガラスエポキシ等である。支持基
板2の直径は、6mmである。厚さは、0.6mmであ
る。凸部72aの幅は2.4mm、高さは0.5mmで
ある。焦電エレメント1の焦電検出部1a,1bの下面
電極は、銀ペーストにより凸部2aに貼着されている。
The present invention will be described in more detail with reference to the embodiments shown in the drawings. The present invention is not limited to this. —First Embodiment— FIG. 1 is a top view of an infrared detection device according to a first embodiment of the present invention. Further, FIG. 2 is a front view thereof. In the infrared detection device 100, reference numeral 1 is a pyroelectric element in which two pyroelectric detection units 1a and 1b are provided on one rectangular pyroelectric plate. The size of the pyroelectric element 1 is 5.2 × 2.
It is 6 mm. The thickness is 130 μm. Reference numeral 2 is a support substrate having a convex portion 2a at the center. The material of the support substrate 2 is ceramics, glass epoxy or the like. The diameter of the support substrate 2 is 6 mm. The thickness is 0.6 mm. The protrusion 72a has a width of 2.4 mm and a height of 0.5 mm. The lower surface electrodes of the pyroelectric detectors 1a and 1b of the pyroelectric element 1 are attached to the convex portions 2a with silver paste.

【0009】さて、図2にαで示すように、支持基板2
の片側に加わった熱は、凸部2aを介して焦電エレメン
ト1に伝わるが、凸部2aが2つの焦電検出部1a,1
b間の中央部分に貼着されているため、熱の伝わりやす
さは2つの焦電検出部1a,1bで同等となり,不平衡
とならない。このため、誤動作を生じない。
Now, as indicated by α in FIG. 2, the supporting substrate 2
The heat applied to one side of the two is transmitted to the pyroelectric element 1 via the convex portion 2a, but the convex portion 2a has two pyroelectric detectors 1a, 1
Since it is adhered to the central portion between b, heat is easily transferred between the two pyroelectric detectors 1a and 1b, and no imbalance occurs. Therefore, no malfunction occurs.

【0010】また、図2にβで示すように、一方の焦電
検出部1aに与えられた熱が、焦電体板を通って他方の
焦電検出部1bに伝わろうとするが、2つの焦電検出部
1a,1bの中央部分から凸部2aに逃げるため、伝わ
りにくくなる。そこで、感度の低下が防止される。
Further, as indicated by β in FIG. 2, the heat applied to one pyroelectric detector 1a tries to be transferred to the other pyroelectric detector 1b through the pyroelectric plate, but two Since it escapes from the central portion of the pyroelectric detectors 1a and 1b to the convex portion 2a, it is difficult to be transmitted. Therefore, a decrease in sensitivity is prevented.

【0011】−第2実施例− 図3は、この発明の第2実施例の赤外線検出装置300
の上面図である。また、図4は、その正面図である。こ
の赤外線検出装置300において、1は、1枚の長方形
の焦電体板に2つの焦電検出部1a,1bを設けた焦電
エレメントである。焦電エレメント1の大きさは、5.
2×2.6mmである。厚さは、130μmである。3
2は、平板の支持基板である。支持基板32の材質は、
セラミックス,ガラスエポキシ等である。支持基板32
の直径は、6mmである。厚さは、1.0mmである。
3は、チップ抵抗であり、支持基板32の上面の中央部
に銀ペーストにより貼着されている。焦電エレメント1
の焦電検出部1a,1bの下面電極は、銀ペーストによ
り前記チップ抵抗3の上面に貼着されている。4は、F
ETであり、支持基板32の上面に貼着されている。
Second Embodiment FIG. 3 shows an infrared detector 300 according to the second embodiment of the present invention.
FIG. Further, FIG. 4 is a front view thereof. In this infrared detection device 300, 1 is a pyroelectric element in which two pyroelectric detection units 1a and 1b are provided on one rectangular pyroelectric plate. The size of the pyroelectric element 1 is 5.
It is 2 × 2.6 mm. The thickness is 130 μm. Three
2 is a flat support substrate. The material of the support substrate 32 is
Ceramics, glass epoxy, etc. Support substrate 32
Has a diameter of 6 mm. The thickness is 1.0 mm.
Reference numeral 3 denotes a chip resistor, which is attached to the central portion of the upper surface of the support substrate 32 with silver paste. Pyroelectric element 1
The lower surface electrodes of the pyroelectric detectors 1a and 1b are attached to the upper surface of the chip resistor 3 with silver paste. 4 is F
ET, which is attached to the upper surface of the support substrate 32.

【0012】支持基板32には、配線パタンが形成して
あり、図3,図4のように貼着すれば、図5の回路が構
成される。図6は、上記赤外線検出装置300の分解斜
視図である。
A wiring pattern is formed on the support substrate 32, and the circuit shown in FIG. 5 is formed by adhering the wiring pattern as shown in FIGS. FIG. 6 is an exploded perspective view of the infrared detection device 300.

【0013】さて、図4にαで示すように、支持基板3
2の片側に加わった熱は、チップ抵抗3を介して焦電エ
レメント1に伝わるが、チップ抵抗3が2つの焦電検出
部1a,1b間の中央部分に貼着されているため、熱の
伝わりやすさは2つの焦電検出部1a,1bで同等とな
り,不平衡とならない。このため、誤動作を生じない。
Now, as shown by α in FIG. 4, the supporting substrate 3
The heat applied to one side of 2 is transmitted to the pyroelectric element 1 via the chip resistor 3, but since the chip resistor 3 is attached to the central portion between the two pyroelectric detectors 1a and 1b, Ease of transmission is equal between the two pyroelectric detectors 1a and 1b, and there is no imbalance. Therefore, no malfunction occurs.

【0014】また、図4にβで示すように、一方の焦電
検出部1aに与えられた熱が、焦電体板を通って他方の
焦電検出部1bに伝わろうとするが、2つの焦電検出部
1a,1bの中央部分からチップ抵抗3に逃げるため、
伝わりにくくなる。そこで、感度の低下が防止される。
Further, as indicated by β in FIG. 4, heat applied to one pyroelectric detector 1a tries to be transferred to the other pyroelectric detector 1b through the pyroelectric plate, but two In order to escape from the central portion of the pyroelectric detectors 1a and 1b to the chip resistor 3,
It becomes difficult to communicate. Therefore, a decrease in sensitivity is prevented.

【0015】[0015]

【発明の効果】この発明の赤外線検出装置によれば、支
持基板から焦電エレメントへの熱の伝わりやすさは、焦
電エレメントの2つの焦電検出部で同等となり,不平衡
とならない。このため、誤動作を生じない。また、焦電
エレメントの2つの焦電検出部の一方から他方に焦電体
板を通して伝わろうとする熱が、2つの焦電検出部間の
中央部分から支持基板側へ逃げるため、伝わりにくくな
る。そこで、感度の低下が防止される。
According to the infrared detector of the present invention, the heat is easily transferred from the supporting substrate to the pyroelectric element in the two pyroelectric detectors of the pyroelectric element, and no imbalance occurs. Therefore, no malfunction occurs. In addition, the heat that is going to be transferred from one of the two pyroelectric detectors of the pyroelectric element to the other through the pyroelectric plate escapes from the central portion between the two pyroelectric detectors to the side of the support substrate, so that it is difficult to transfer. Therefore, a decrease in sensitivity is prevented.

【図面の簡単な説明】[Brief description of drawings]

【図1】この発明の第1実施例の赤外線検出装置の上面
図である。
FIG. 1 is a top view of an infrared detection device according to a first embodiment of the present invention.

【図2】図1の赤外線検出装置の正面図である。FIG. 2 is a front view of the infrared detection device of FIG.

【図3】この発明の第2実施例の赤外線検出装置の上面
図である。
FIG. 3 is a top view of an infrared detection device according to a second embodiment of the present invention.

【図4】図3の赤外線検出装置の正面図である。FIG. 4 is a front view of the infrared detection device of FIG.

【図5】図3の赤外線検出装置の回路図である。5 is a circuit diagram of the infrared detector of FIG.

【図6】図3の赤外線検出装置の分解斜視図である。6 is an exploded perspective view of the infrared detection device of FIG.

【図7】従来の赤外線検出装置の一例を示す上面図であ
る。
FIG. 7 is a top view showing an example of a conventional infrared detection device.

【図8】図7の赤外線検出装置の正面図である。FIG. 8 is a front view of the infrared detection device of FIG.

【符号の説明】[Explanation of symbols]

1 焦電エレメント 1a,1b 焦電検出部 2 支持基板 2a 凸部 3 チップ抵抗 4 FET 32 支持基板 100 赤外線検出装置 300 赤外線検出装置 DESCRIPTION OF SYMBOLS 1 Pyroelectric element 1a, 1b Pyroelectric detection part 2 Support substrate 2a Convex part 3 Chip resistance 4 FET 32 Support substrate 100 Infrared detector 300 Infrared detector

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 1枚の焦電体板に2つの焦電検出部を設
けた焦電エレメントを支持基板に貼着してなる赤外線検
出装置において、支持基板の上面に凸部を設け、その凸
部の上面に、焦電エレメントの2つの焦電検出部間の中
央部分の下面を貼着したことを特徴とする赤外線検出装
置。
1. An infrared detection device comprising a pyroelectric element having two pyroelectric detection units provided on one pyroelectric plate and attached to a supporting substrate, wherein a convex portion is provided on an upper surface of the supporting substrate. An infrared detecting device, wherein a lower surface of a central portion between two pyroelectric detection portions of a pyroelectric element is attached to an upper surface of a convex portion.
【請求項2】 平板の支持基板の上面にチップ抵抗を貼
着し、そのチップ抵抗の上面に、1枚の焦電体板に2つ
の焦電検出部を設けた焦電エレメントの前記2つの焦電
検出部間の中央部分の下面を貼着したことを特徴とする
赤外線検出装置。
2. A pyroelectric element comprising a flat support substrate and a chip resistor attached to the upper surface thereof, the pyroelectric element having two pyroelectric detectors provided on the pyroelectric plate. An infrared detector characterized in that a lower surface of a central portion between the pyroelectric detectors is attached.
JP4235727A 1992-09-03 1992-09-03 Infrared ray detector Pending JPH0682306A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4235727A JPH0682306A (en) 1992-09-03 1992-09-03 Infrared ray detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4235727A JPH0682306A (en) 1992-09-03 1992-09-03 Infrared ray detector

Publications (1)

Publication Number Publication Date
JPH0682306A true JPH0682306A (en) 1994-03-22

Family

ID=16990340

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4235727A Pending JPH0682306A (en) 1992-09-03 1992-09-03 Infrared ray detector

Country Status (1)

Country Link
JP (1) JPH0682306A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007024607A (en) * 2005-07-14 2007-02-01 Shimadzu Corp Pyroelectctric sensor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007024607A (en) * 2005-07-14 2007-02-01 Shimadzu Corp Pyroelectctric sensor

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