Optical head adapted to receive a light guide plug
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United States of America Patent
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-
Jan 22, 1991
Grant Date -
N/A
app pub date -
Aug 15, 1989
filing date -
Aug 20, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An optical head having a photoelectric converter at one end and a socket for a light guide plug at the opposite end, has a spring loaded apertured diaphragm adapted to press lightly against the front end of the plug when it is inserted into the socket. The diaphragm has a cylindrical aperture at its side turned toward the plug and an opening defined by a frustoconical surface widening in the direction of the converter. This surface and the rear wall of the diaphragm can be provided with a light absorbent coating or the surface can be reflective and the rear wall provided with a light absorbent coating.
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