Objective lens apparatus

Details Objective lens apparatus Objective lens apparatus

1984-02-21

1987-03-17

Corbin, John K.

350 63, G02B 704, G02B 718

Patent

active

046502947

ABSTRACT:
An objective lens apparatus for an optical disc player comprises an objective lens holder rotatable about a center axis, an objective lens carried by the holder at a location spaced from the center axis, an optical member, a magnetic flux generating member for generating magnetic flux, and tracking and focusing coils interacting with the magnetic flux for effecting tracking and focusing adjustments of the objective lens. The optical member rotates simultaneously with the lens holder and leads light which is incident along the center axis to the objective lens in a direction parallel to the center axis thereby eliminating optical modulation of the light caused by rotation of the lens holder in the tracking direction.

REFERENCES:
patent: 3551595 (1970-12-01), De Vries
patent: 3591249 (1971-07-01), Wildhaber
patent: 4473274 (1984-09-01), Yano et al.

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