(19)

(11)

EP 0 091 448 A1

(12)

(43) Date of publication: 19.10.1983 Bulletin 1983/42 (21) Application number: 82903033.0 (22) Date of filing: 15.10.1982

(51) International Patent Classification (IPC):  F21V 11/ 00( . ) G02B 5/ 02( . ) H04N 5/ 72( . ) F21V 11/ 06( . ) H01J 29/ 89( . ) (86) International application number: PCT/AU1982/000171 (87) International publication number: WO 1983/001516 (28.04.1983 Gazette 1983/10)

(84) Designated Contracting States: DE FR GB NL (30) Priority: 16.10.1981 AU 19810001199 (71) Applicants: TER-HORST, Albert North Perth, W.A.6006 (AU) CROOKE, Michael David North Carlton, VIC 3054 (AU)	(72) Inventors: TER-HORST, Albert North Perth, W.A.6006 (AU) CROOKE, Michael David North Carlton, VIC 3054 (AU) (74) Representative: Lyons, Andrew John, et al  ROYSTONS Tower Building Water Street Liverpool L3 1BA Liverpool L3 1BA (GB)