Electro-optical apparatus

Details Electro-optical apparatus Electro-optical apparatus

G - Physics

11

B

352/32.21

G11B 7/00 (2006.01) G11B 7/09 (2006.01) G11B 7/095 (2006.01)

Patent

CA 1187606

18 ABSTRACT: An electro-optical apparatus comprises an objective which scans an optical disc having a trans- parent protective layer by means of a radiation beam which, through the transparent layer, is focussed on a reflecting recording surface, the objective moving along the optical axis for focussing the radiation beam on the recording layer and moreover performing limited pivotal movement. The angular position of the optical axis of the objective is corrected for obliquity of the surface of the optical disc, correction means being provided to tilt the objective through a correction angle, so that the angle between the optical axis and the normal to the disc surface is reduced.

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