JPH044290U - - Google Patents

Info

Publication number
JPH044290U
JPH044290U JP4631590U JP4631590U JPH044290U JP H044290 U JPH044290 U JP H044290U JP 4631590 U JP4631590 U JP 4631590U JP 4631590 U JP4631590 U JP 4631590U JP H044290 U JPH044290 U JP H044290U
Authority
JP
Japan
Prior art keywords
heat ray
lens
detection element
focusing lens
fresnel lenses
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.)
Granted
Application number
JP4631590U
Other languages
English (en)
Japanese (ja)
Other versions
JP2501596Y2 (ja
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 JP4631590U priority Critical patent/JP2501596Y2/ja
Publication of JPH044290U publication Critical patent/JPH044290U/ja
Application granted granted Critical
Publication of JP2501596Y2 publication Critical patent/JP2501596Y2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Burglar Alarm Systems (AREA)
JP4631590U 1990-04-27 1990-04-27 熱線式検知器 Expired - Lifetime JP2501596Y2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4631590U JP2501596Y2 (ja) 1990-04-27 1990-04-27 熱線式検知器

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4631590U JP2501596Y2 (ja) 1990-04-27 1990-04-27 熱線式検知器

Publications (2)

Publication Number Publication Date
JPH044290U true JPH044290U (enExample) 1992-01-16
JP2501596Y2 JP2501596Y2 (ja) 1996-06-19

Family

ID=31561291

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4631590U Expired - Lifetime JP2501596Y2 (ja) 1990-04-27 1990-04-27 熱線式検知器

Country Status (1)

Country Link
JP (1) JP2501596Y2 (enExample)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008128912A (ja) * 2006-11-22 2008-06-05 Matsushita Electric Works Ltd 赤外線検出装置およびその製造方法
WO2008149926A1 (ja) * 2007-06-08 2008-12-11 Panasonic Electric Works Co., Ltd. 赤外光検出器
JP2012212108A (ja) * 2011-03-18 2012-11-01 Ricoh Co Ltd 光学素子及び光検出デバイス並びに物体検知システム

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008128912A (ja) * 2006-11-22 2008-06-05 Matsushita Electric Works Ltd 赤外線検出装置およびその製造方法
WO2008149926A1 (ja) * 2007-06-08 2008-12-11 Panasonic Electric Works Co., Ltd. 赤外光検出器
US8648307B2 (en) 2007-06-08 2014-02-11 Panasonic Corporation Infrared ray detector
JP2012212108A (ja) * 2011-03-18 2012-11-01 Ricoh Co Ltd 光学素子及び光検出デバイス並びに物体検知システム

Also Published As

Publication number Publication date
JP2501596Y2 (ja) 1996-06-19

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