Electromagnetic driving apparatus including objective lens holder having directly plated reflecting surfaces

Claim 1

An electromagnetic objective lens driving apparatus of an optical disc data recording and reproducing apparatus, comprising: a carriage that is movable in a radial direction of an optical disc; an objective lens holder that is supported on the carriage to move in focusing and tracking directions of the optical disc, said objective lens holder comprising an integral plastic injection molded element including printed circuits plated onto opposite end surfaces; a pair of reflecting surfaces which are provided on opposite end surfaces of the objective lens holder in a tracking direction, said reflecting surfaces being directly plated on the outer surfaces of the objective lens holder said reflecting surfaces and said printed circuits being formed by a same plating process; and, a pair of photo sensors provided on the carriage, positioned opposite to the respective reflecting surfaces and comprising reflection type photosensors each having a light emitter and a light receiver.