(19)
(11) EP 0 484 293 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
17.06.1992 Bulletin 1992/25

(43) Date of publication A2:
06.05.1992 Bulletin 1992/19

(21) Application number: 91830462.7

(22) Date of filing: 29.10.1991
(51) International Patent Classification (IPC)5G08B 13/193
(84) Designated Contracting States:
AT BE CH DE DK ES FR GB GR IT LI LU NL SE

(30) Priority: 29.10.1990 IT 5334290 U
29.10.1990 IT 6783590

(71) Applicant: TEKNOX S.r.l.
I-10095 Grugliasco (Torino) (IT)

(72) Inventor:
  • Bianco, Luigi
    I-10141 Torino (IT)

(74) Representative: Bosotti, Luciano et al
c/o JACOBACCI & PERANI S.p.A. Corso Regio Parco, 27
10152 Torino
10152 Torino (IT)


(56) References cited: : 
   
       


    (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.







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