(19)

(11)

EP 0 253 817 A1

(12)

(43) Date of publication: 27.01.1988 Bulletin 1988/04 (21) Application number: 86902470.0 (22) Date of filing: 14.04.1986

(51) International Patent Classification (IPC):  G01N 21/ 17( . ) G01N 21/ 47( . ) G03B 15/ 02( . ) G01N 21/ 29( . ) G02B 27/ 00( . ) (86) International application number: PCT/IT1986/000030 (87) International publication number: WO 1986/006482 (06.11.1986 Gazette 1986/24)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (30) Priority: 19.04.1985 IT 19850001218 (71) Applicant: BARTOLOMEI, Giovanni I-52037 Sansepolcro (Arezzo) (IT)	(72) Inventor: BARTOLOMEI, Giovanni I-52037 Sansepolcro (Arezzo) (IT)