JPH0641158Y2 - 光線式検出器の防滴防曇構造 - Google Patents

光線式検出器の防滴防曇構造

Info

Publication number
JPH0641158Y2
JPH0641158Y2 JP1988158852U JP15885288U JPH0641158Y2 JP H0641158 Y2 JPH0641158 Y2 JP H0641158Y2 JP 1988158852 U JP1988158852 U JP 1988158852U JP 15885288 U JP15885288 U JP 15885288U JP H0641158 Y2 JPH0641158 Y2 JP H0641158Y2
Authority
JP
Japan
Prior art keywords
light
transparent
proof
heater member
lens
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 - Lifetime
Application number
JP1988158852U
Other languages
English (en)
Japanese (ja)
Other versions
JPH0279445U (en]
Inventor
忠 真柴
修三 三ノ輪
英二 芹川
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.)
Hochiki Corp
Original Assignee
Hochiki Corp
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 Hochiki Corp filed Critical Hochiki Corp
Priority to JP1988158852U priority Critical patent/JPH0641158Y2/ja
Publication of JPH0279445U publication Critical patent/JPH0279445U/ja
Application granted granted Critical
Publication of JPH0641158Y2 publication Critical patent/JPH0641158Y2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Optical Measuring Cells (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
JP1988158852U 1988-12-06 1988-12-06 光線式検出器の防滴防曇構造 Expired - Lifetime JPH0641158Y2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1988158852U JPH0641158Y2 (ja) 1988-12-06 1988-12-06 光線式検出器の防滴防曇構造

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1988158852U JPH0641158Y2 (ja) 1988-12-06 1988-12-06 光線式検出器の防滴防曇構造

Publications (2)

Publication Number Publication Date
JPH0279445U JPH0279445U (en]) 1990-06-19
JPH0641158Y2 true JPH0641158Y2 (ja) 1994-10-26

Family

ID=31439553

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1988158852U Expired - Lifetime JPH0641158Y2 (ja) 1988-12-06 1988-12-06 光線式検出器の防滴防曇構造

Country Status (1)

Country Link
JP (1) JPH0641158Y2 (en])

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100920724B1 (ko) * 2007-12-06 2009-10-07 주식회사 온텍콤 적외선 투광기

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2540192Y2 (ja) * 1991-03-12 1997-07-02 ホーチキ株式会社 光線式感知器
JP4631339B2 (ja) * 2004-07-27 2011-02-16 株式会社ニコン 環境制御装置、温度調節装置および環境制御型分析装置
JP5531609B2 (ja) * 2009-06-23 2014-06-25 ダイキン工業株式会社 冷媒濃度検出器

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5226587U (en]) * 1975-08-14 1977-02-24
JPS5260378U (en]) * 1975-10-28 1977-05-02
JPS60170784U (ja) * 1984-04-21 1985-11-12 尾崎　順康 積雪検知装置
JPS6225844U (en]) * 1985-07-31 1987-02-17

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100920724B1 (ko) * 2007-12-06 2009-10-07 주식회사 온텍콤 적외선 투광기

Also Published As

Publication number Publication date
JPH0279445U (en]) 1990-06-19

Similar Documents

Publication Publication Date Title
US9123222B2 (en) Apparatus and method for detecting tampering with an infra-red motion sensor
US6529129B1 (en) Security sensor having disturbance detecting capability
CN108460948B (zh) 带有测量腔和用于共同地布置火灾传感器和至少一个另外的传感器的电路载体的火灾报警器
JP2786030B2 (ja) 光電センサーの投光器
US5914489A (en) Continuous optical path monitoring of optical flame and radiation detectors
US20250146922A1 (en) Optical chamber for smoke detection with reflective surfaces
EP3642813B1 (en) A sensor assembly and a device comprising such sensor assembly
JP2691951B2 (ja) 光電式煙感知器
US5420567A (en) Combination fire/intrusion alarm detectors using active infared elements
US6351219B1 (en) Photoelectric smoke detector
JPH0641158Y2 (ja) 光線式検出器の防滴防曇構造
US3544988A (en) Picture motion detection system
US7414236B2 (en) Monitoring devices and intrusion surveillance devices
US5200624A (en) Wide-angle radiant energy detector
US4644164A (en) Compact passive infrared intrusion sensor
US20080083868A1 (en) Monitoring devices and surveillance devices
US20090102648A1 (en) Motion detector
JPS6122278Y2 (en])
JP3338608B2 (ja) 光電式煙感知器
US5485011A (en) Two-sided integrated-circuit PIR sensor package
KR100492189B1 (ko) 원 거리 화재 탐지 식별 장치
KR200232668Y1 (ko) 유리필터의 스모그현상을 억제한 감시용카메라
US20020005487A1 (en) Movement detector and method of installing such a detector
JP2702043B2 (ja) 光電式分離型煙感知器
GB2251938A (en) Passive infrared intruder detector