Optical pick-up and light detecting cover therefor

Details Optical pick-up and light detecting cover therefor Optical pick-up and light detecting cover therefor

1996-06-11

1998-03-10

Bovernick, Rodney B.

Optical waveguides

Miscellaneous

385 94, 369 4412, 369 4423, 257433, G02B 600, G11B 700

Patent

active

057271119

ABSTRACT:
A light-deflecting cover for an optical pick-up apparatus has a reflecting portion disposed within a light path of a light beam projected from a light source or light returning from outside the apparatus for deflecting an optical beam for bending the light path. The light deflecting part of the cover is provided with a light absorbing portion for removing unnecessary light which does not contribute to the operating characteristics of optical equipment within which the light deflecting part is provided. The optical pick-up comprises a light-emitting and detecting device, an optical system for focusing and projecting a laser light outputted from the light-emitting and detecting device onto a signal recording surface of an optical disc, and guiding light returning from the signal recording surface of the optical disc to the light-emitting and detecting device and a light deflecting part having a reflecting portion disposed in the light path of the light system for deflecting the light beam for bending the light path, the light deflecting part comprising a light absorbing portion for removing unnecessary light which does not contribute to the operating characteristics of the optical pick-up in which the light deflecting part is provided.

REFERENCES:
patent: 5005162 (1991-04-01), Mitsumori et al.
patent: 5181193 (1993-01-01), Kume et al.
patent: 5374819 (1994-12-01), Kim et al.
patent: 5396061 (1995-03-01), Taniguchi et al.

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