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(11) | EP 0 484 293 A3 |
(12) | EUROPEAN PATENT APPLICATION |
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(54) | Infrared presence sensor |
(57) A passive presence sensor (10) of the spatial type for rooms and the passenger compartments
of motor vehicles includes a Fresnel lens (14) for focusing the monitoring radiation
onto a respective pyroelectric sensitive element (12). The sensor (10) can be produced
in the form of a module which can be fitted in a connection box (1 to 7) or the like
of an electrical system and/or installed in motor vehicles as original equipment and
is characterised by low energy consumption. |