(19)

(11)

EP 0 257 059 A1

(12)

(43) Date of publication: 02.03.1988 Bulletin 1988/09 (21) Application number: 87901187.0 (22) Date of filing: 15.01.1987

(51) International Patent Classification (IPC):  G02F 1/ 13( . ) G02F 1/ 29( . ) G02F 1/ 1343( . ) (86) International application number: PCT/US1987/000105 (87) International publication number: WO 1987/005125 (27.08.1987 Gazette 1987/19)

(84) Designated Contracting States: DE FR GB IT NL (30) Priority: 18.02.1986 US 19860830045 (71) Applicant: Hughes Aircraft Company Los Angeles California 90045-0066 (US)	(72) Inventor: TANGONAN, Gregory, L. Oxnard, CA 93030 (US) (74) Representative: KUHNEN, WACKER & PARTNER  Alois-Steinecker-Strasse 22 D-85354 Freising D-85354 Freising (DE)