H - Electricity – 04 – J
Patent
H - Electricity
04
J
363/1.81
H04J 1/02 (2006.01) G02B 6/34 (2006.01) G02F 1/13 (2006.01) H04J 14/02 (2006.01)
Patent
CA 1193770
ABSTRACT: The invention relates to an optical demulti- plexer whose "colour band" is adjustable, so that the demultiplexer can always be adapted to future P.T.T. standards. The adjustment is performed either by tilt- ing the optical grating with respect to the light beam incident thereon or by deflecting the light by means of a liquid crystal arranged in the light beam.
410651
Khoe Giok D.
Nicia Antonius J.a.
N.v. Philips Gloeilampenfabrieken
Van Steinburg C.e.
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