Open scattered light smoke detector, particularly with a sidelooker LED
An open-type scattered light smoke includes a housing shell supporting a circuit substrate having at least one light emitter and one light receiver arranged thereon. The light emitter and the light receiver are arranged in a scattered light array having a scattered light volume located in the open a...
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| creator | Rohrer, Thomas Fischer, Martin Stutz, Matthias |
| description | An open-type scattered light smoke includes a housing shell supporting a circuit substrate having at least one light emitter and one light receiver arranged thereon. The light emitter and the light receiver are arranged in a scattered light array having a scattered light volume located in the open air outside the smoke detector. The light emitter emits a light beam having a direction pay, with part of the path traveled by the directional ray between the light emitter and the scattered light volume running parallel to an outer face of the circuit substrate facing away from the housing shell. The light emitter may be an LED housed in a sidelooker package and the light receiver may be a photodiode housed in a reverse-gullwing package. A sensor surface of the photodiode is aligned opposite the scattered light volume through an opening in the circuit substrate that provides mechanical protection. |
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The light emitter and the light receiver are arranged in a scattered light array having a scattered light volume located in the open air outside the smoke detector. The light emitter emits a light beam having a direction pay, with part of the path traveled by the directional ray between the light emitter and the scattered light volume running parallel to an outer face of the circuit substrate facing away from the housing shell. The light emitter may be an LED housed in a sidelooker package and the light receiver may be a photodiode housed in a reverse-gullwing package. 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| language | eng ; fre ; ger |
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| subjects | ALARM SYSTEMS INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES MEASURING MEASURING QUANTITY OF HEAT MEASURING TEMPERATURE ORDER TELEGRAPHS PHYSICS SIGNALLING SIGNALLING OR CALLING SYSTEMS TESTING THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR |
| title | Open scattered light smoke detector, particularly with a sidelooker LED |
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