OPTICAL PICKUP DUST-PROOFING STRUCTURE

摘要

Rapid and secure covering of an object lens by means of a simple and easy constitution prevents dust deposit on the object lens. A movable part (34) is transferable along the direction of the axial center of a clamper (26) and is connected to the clamper (26) so as to face the standby position of an optical pickup (20). When a disk (14) is not placed on a turntable (18), the movable part (34) is lowered to cover the object lense (22) in a standby position. And hence, as the object lense (22) is kept from dust, the quantity of light to a light detector does not decrease and incorrect reading is prevented. And further, since the movable part (34) is only connected to the clamper (26) in the structure, the number of parts decreases, the constitution becomes simpler, the dustproofing structure costs less, and troubles decrease, in comparison with conventional cases.