Pickup device for optical information reader

Abstract

Abstract PURPOSE:To attain miniaturization and thin profile of the titled device by expanding the 2nd flexible member in the optical direction and arranging the other in the range of an outer size in one optical axis direction in the 1st and 2nd coils. CONSTITUTION:A couple of coils 51 wound so that the coil center axis is in parallel with a focus direction Z are fixed to end faces in parallel with two directions, focus direction Z and tracking direction X among each end face of a holder 41. A coil 50 is arranged in the range of outer diameter of the coil 51 in the focus direction Z. That is, members of the 1st, 2nd coils and the magnetic circuit are arranged in parallel with a face orthogonal in the optical axis direction without being stacked in the optical axis direction and the 2nd flexible member is arranged to a space produced at the side of each member in the optical axis direction. Thus, not so large occupied space is required and the thin profile of the entire reader is attained.

Inventors

• 👤 Yasumitsu Wada
• 👤 泰光 和田
• 👤 Seiichi Makimoto
• 👤 槙本　誠一
• 👤 Teruhiro Ogata
• 👤 尾形　彰宏

Bibliographic Details