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JPH0233331U - - Google Patents

Info

Publication number
JPH0233331U
JPH0233331U JP11233688U JP11233688U JPH0233331U JP H0233331 U JPH0233331 U JP H0233331U JP 11233688 U JP11233688 U JP 11233688U JP 11233688 U JP11233688 U JP 11233688U JP H0233331 U JPH0233331 U JP H0233331U
Authority
JP
Japan
Prior art keywords
lens
ray
hot
fresnel lens
pyroelectric element
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
JP11233688U
Other languages
English (en)
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 filed Critical
Priority to JP11233688U priority Critical patent/JPH0233331U/ja
Publication of JPH0233331U publication Critical patent/JPH0233331U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)

Description

【図面の簡単な説明】
第１図は本考案の一実施例の断面図、第２図は
同上の斜視図、第３図は同上の動作説明図、第４
図ａは本考案の他の実施例の斜視図、同図ｂは同
上の取付説明図、第５図は本考案のさらに他の実
施例の断面図、第６図は同上の動作説明図、第７
図ａ〜ｃは同上で設定される検知エリアの説明図
、第８図ａ〜ｃは従来例の検知エリアの可変方法
の説明図、第９図はフレネルレンズの平面図、第
１０図ａ，ｂは検知エリアを上下方向に変更した
場合の説明図、第１１図は同上の問題点の説明図
、第１２図ａ，ｂは同上の複合センサに用いた場
合の問題点の説明図である。 １はフレネルレンズ、２は焦電素子、９は遮蔽
板、１０は遮蔽枠、１４は遮蔽体である。

Claims (1)

    【実用新案登録請求の範囲】
  1. 複数のレンズ体を多数連設して形成され、各レ
    ンズ体の夫々焦点方向を焦電素子の方向に向けて
    熱線を集光するフレネルレンズを備えた熱線式検
    知器において、フレネルレンズのレンズ体の連設
    方向から焦電素子に照射され熱線を遮蔽する遮蔽
    手段を備えて成ることを特徴とする熱線式検知器
    。
JP11233688U 1988-08-26 1988-08-26 Pending JPH0233331U (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11233688U JPH0233331U (ja) 1988-08-26 1988-08-26

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11233688U JPH0233331U (ja) 1988-08-26 1988-08-26

Publications (1)

Publication Number Publication Date
JPH0233331U true JPH0233331U (ja) 1990-03-02

Family

ID=31351184

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11233688U Pending JPH0233331U (ja) 1988-08-26 1988-08-26

Country Status (1)

Country Link
JP (1) JPH0233331U (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0533086U (ja) * 1991-10-11 1993-04-30 株式会社チノー 検知装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5752091B2 (ja) * 1975-06-24 1982-11-05
JPS5752090B2 (ja) * 1978-06-26 1982-11-05
JPS6348788A (ja) * 1986-08-13 1988-03-01 安田　繁之 面状発熱体

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5752091B2 (ja) * 1975-06-24 1982-11-05
JPS5752090B2 (ja) * 1978-06-26 1982-11-05
JPS6348788A (ja) * 1986-08-13 1988-03-01 安田　繁之 面状発熱体

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0533086U (ja) * 1991-10-11 1993-04-30 株式会社チノー 検知装置

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