Obturator disc for an optical transducer

Details Obturator disc for an optical transducer Obturator disc for an optical transducer

G - Physics

01

D

88/97.4

G01D 5/32 (2006.01) G01D 5/26 (2006.01) G01D 5/347 (2006.01)

Patent

CA 1255134

ABSTRACT (Fig 1) OBTURATOR DISC FOR AN OPTICAL TRANSDUCER The obturator disc comprises a cylindrical element (11) of transparent plastics material provided with a unitary hub (13) by means of which it can be connected to a rotating member. To a front surface (14) of the cylindrical element there is applied, by a photographic process, a layer of opaque material in an annular zone of which there is formed a plurality of transparent windows (16) of high definitions.

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