(19)
(11)
EP 0 407 524 A1
(12)
(43)
Date of publication:
16.01.1991
Bulletin 1991/03
(21)
Application number:
90901188.0
(22)
Date of filing:
17.11.1989
(51)
International Patent Classification (IPC):
G02B
6/
13
( . )
G02B
6/
124
( . )
(86)
International application number:
PCT/US1989/005139
(87)
International publication number:
WO 1990/005926
(
31.05.1990
Gazette 1990/12)
(84)
Designated Contracting States:
DE FR GB NL
(30)
Priority:
21.11.1988
US 19880273785
10.07.1989
US 19890377699
(71)
Applicant:
EASTMAN KODAK COMPANY
Rochester, New York 14650-2201 (US)
(72)
Inventors:
BRAZAS, John, Charles, Jr.
Rochester, NY 14616 (US)
MACHIELE, Delwyn, Earl
Rochester, NY 14625 (US)
(74)
Representative:
Brandes, Jürgen, Dr. rer. nat., et al
Wuesthoff & Wuesthoff Patent- und Rechtsanwälte Schweigerstrasse 2
D-81541 München
D-81541 München (DE)
(54)
METHOD OF MAKING AN INTEGRATED OPTICAL MODE-INDEX ELEMENT