(19)

(11)

EP 0 149 635 A1

(12)

(43) Date of publication: 31.07.1985 Bulletin 1985/31 (21) Application number: 84902587.0 (22) Date of filing: 28.06.1984

(51) International Patent Classification (IPC):  G02B 27/ 06( . ) G09F 19/ 14( . ) (86) International application number: PCT/FI1984/000047 (87) International publication number: WO 1985/000237 (17.01.1985 Gazette 1985/02)

(84) Designated Contracting States: AT BE CH DE FR GB LI LU NL SE (30) Priority: 28.06.1983 FI 19830002351 (71) Applicant: ASUNTA, Anssi SF-00320 Helsinki 32 (FI)	(72) Inventor: ASUNTA, Anssi SF-00320 Helsinki 32 (FI) (74) Representative: Patentanwälte Wenzel & Kalkoff  Postfach 73 04 66, Grubesallee 26 D-22124 Hamburg D-22124 Hamburg (DE)