GB2111278B - Optical fire detector - Google Patents
Optical fire detectorInfo
- Publication number
- GB2111278B GB2111278B GB08230821A GB8230821A GB2111278B GB 2111278 B GB2111278 B GB 2111278B GB 08230821 A GB08230821 A GB 08230821A GB 8230821 A GB8230821 A GB 8230821A GB 2111278 B GB2111278 B GB 2111278B
- Authority
- GB
- United Kingdom
- Prior art keywords
- fire detector
- optical fire
- optical
- detector
- fire
- 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
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
- G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
- G08B17/103—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means using a light emitting and receiving device
Landscapes
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Fire-Detection Mechanisms (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE8101921A SE432029B (en) | 1981-03-25 | 1981-03-25 | OPTICAL FIRE DETECTOR |
Publications (2)
Publication Number | Publication Date |
---|---|
GB2111278A GB2111278A (en) | 1983-06-29 |
GB2111278B true GB2111278B (en) | 1985-05-22 |
Family
ID=20343435
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB08230821A Expired GB2111278B (en) | 1981-03-25 | 1982-03-25 | Optical fire detector |
Country Status (4)
Country | Link |
---|---|
CH (1) | CH657929A5 (en) |
GB (1) | GB2111278B (en) |
SE (1) | SE432029B (en) |
WO (1) | WO1982003487A1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2935549B2 (en) * | 1990-08-23 | 1999-08-16 | 能美防災株式会社 | Fire detection method and device |
DE10228013B4 (en) * | 2002-06-22 | 2005-11-03 | Hans-Erich Sen. Gubela | Partial transmission reflector, use of the partial transmission reflector and optical sensor system |
EP2093731A1 (en) * | 2008-02-19 | 2009-08-26 | Siemens Aktiengesellschaft | Linear optical smoke alarm with multiple part-beams |
FR3027438B1 (en) * | 2014-10-16 | 2016-11-04 | Soc D'etude Et De Fabrication Ind | LINEAR SMOKE DETECTOR. |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1047470B (en) * | 1956-07-28 | 1958-12-24 | Zeiss Ikon Ag | Multi-focal length lens, preferably field lens |
DE2303040C3 (en) * | 1973-01-23 | 1978-03-30 | Erwin Sick Gmbh Optik-Elektronik, 7808 Waldkirch | Optical measuring device, in particular for measuring smoke density or visibility |
-
1981
- 1981-03-25 SE SE8101921A patent/SE432029B/en not_active IP Right Cessation
-
1982
- 1982-03-25 GB GB08230821A patent/GB2111278B/en not_active Expired
- 1982-03-25 WO PCT/SE1982/000089 patent/WO1982003487A1/en active Application Filing
- 1982-03-25 CH CH692882A patent/CH657929A5/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
GB2111278A (en) | 1983-06-29 |
WO1982003487A1 (en) | 1982-10-14 |
SE432029B (en) | 1984-03-12 |
CH657929A5 (en) | 1986-09-30 |
SE8101921L (en) | 1982-09-26 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |