| http://www.w3.org/ns/prov#value | - ug 25, 1998Pioneer Electronic CorporationOptical pickup unit capable of reading signals recorded on different types of optical disksUS5822135 *May 1, 1996Oct 13, 1998Samsung Electronics Co., Ltd.Lens device including a light controlling mechanism and an optical pickup apparatus using a lens deviceUS5838651 *Aug 7, 1996Nov 17, 1998Nec CorporationOptical read-out head capable of improved read-out of
|
