JPS52156681A - Smoke sensor of light scattering type - Google Patents
Smoke sensor of light scattering typeInfo
- Publication number
- JPS52156681A JPS52156681A JP7417876A JP7417876A JPS52156681A JP S52156681 A JPS52156681 A JP S52156681A JP 7417876 A JP7417876 A JP 7417876A JP 7417876 A JP7417876 A JP 7417876A JP S52156681 A JPS52156681 A JP S52156681A
- Authority
- JP
- Japan
- Prior art keywords
- light scattering
- smoke sensor
- scattering type
- sensor
- light
- 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
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/47—Scattering, i.e. diffuse reflection
- G01N21/49—Scattering, i.e. diffuse reflection within a body or fluid
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Fire-Detection Mechanisms (AREA)
Abstract
PURPOSE:To provide a sensor, which can easily check the sensitivity of a light receiving element, by providing a checking light emitting element which has its light emission made variable.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7417876A JPS52156681A (en) | 1976-06-22 | 1976-06-22 | Smoke sensor of light scattering type |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7417876A JPS52156681A (en) | 1976-06-22 | 1976-06-22 | Smoke sensor of light scattering type |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS52156681A true JPS52156681A (en) | 1977-12-27 |
Family
ID=13539640
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7417876A Pending JPS52156681A (en) | 1976-06-22 | 1976-06-22 | Smoke sensor of light scattering type |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS52156681A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5946841A (en) * | 1982-09-10 | 1984-03-16 | Oki Denki Bosai Kk | Photoelectric type smoke detector with test function |
-
1976
- 1976-06-22 JP JP7417876A patent/JPS52156681A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5946841A (en) * | 1982-09-10 | 1984-03-16 | Oki Denki Bosai Kk | Photoelectric type smoke detector with test function |
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