Photosensor devices and optical pick-ups.

摘要

A photosensor device (38) and an optical pick-up device (50) incorporating the photosensor device (38) are advantageously used in an optical compact disc player of the type where the optical pick-up device (50) is driven along a path at an acute tilt angle (p) relative to the sides of a rectangular casing (40). The photosensor device (38) has a plurality of photosensitive elements (3E, etc.) aligned in a first direction and a plurality of terminal leads (9) extending parallel to each other and perpendicular to a second direction so that the photosensor (38) may be mounted on a circuit board in a conventional configuration to save space. Within the optical pick-up device (50), the photosensitive elements (3E, etc.) are aligned at a mounting angle (8) which is a function of the tilt angle (p) so that the three optical beams are received thereon in the proper orientation.