公开(公告)号：JP2000298863A

公开(公告)日：2000-10-24

申请号：JP10323399

申请日：1999-04-09

Applicant: SONY CORP

Inventor： KAJIYAMA YOSHIHIRO ,  KUMAKURA JIYUNZOU ,  OSADA YASUO ,  KUROIWA TOSHIYUKI ,  NAGASAKA HIDEO ,  KONDO KANESHIRO ,  SHIMADA YUTAKA ,  MATSUMOTO KATSUO ,  ISHIZEKI HIROSHI ,  HIROZAWA SHUICHI ,  SUGIHARA YOSHIO

IPC: G11B7/121 ,  G11B7/12

Abstract: PROBLEM TO BE SOLVED: To surely prevent dust from being attached onto an objective lens and further prevent dust from entering an optical block. SOLUTION: A cover plate 45 is provided to cover a transparent aperture 24 of a lid member 21 that covers an objective lens 11 when an optical pickup section 12 is moved to an outer position at which the objective lens 11 is caused to be positioned at the outside of an optical disk mounted onto a disk rotation drive mechanism 3. An operating section 55 for moving the cover plate 45 away from the objective lens 11 is provided either at the lid member 21 or the cover plate 45. When the optical pickup section 12 is moved to the outside of the optical disk, the cover plate 45 is caused to be moved away from the objective lens 11 by means of the operating section 55, thereby causing the cover plate 45 to cover the objective lens 11 while avoiding abutment against the objective lens 11.

公开(公告)号：JP2000251360A

公开(公告)日：2000-09-14

申请号：JP5186099

申请日：1999-02-26

Applicant: SONY CORP

Inventor： KAJIYAMA YOSHIHIRO ,  KUMAKURA JIYUNZOU ,  OSADA YASUO ,  KUROIWA TOSHIYUKI ,  NAGASAKA HIDEO ,  KONDO KANESHIRO ,  SHIMADA YUTAKA ,  MATSUMOTO KATSUO ,  ISHIZEKI HIROSHI ,  HIROZAWA SHUICHI ,  SUGIHARA YOSHIO

IPC: G11B17/028

Abstract: PROBLEM TO BE SOLVED: To make large the permissible range of a disk wherein centering is enabled and to center the disk accurately for a long period with durability. SOLUTION: This table has a tapered centering part 37 engaging the center hole 1a of the disk 1 mounted on a disk mount part 34 and this centering part 37 is provided with elastic displacement parts 39 which can elastically be displaced along the inner and outer peripheries of the centering part. On the inner peripheral side of those elastic displacement part 39, a ring-shaped elastic body 40 is provided which energizes the free-end sides of the elastic displacement parts 39 toward the outer periphery of the centering part 37 to prevent the elastic displacement part 39 from being overdisplaced. An elastic body 40 is supported by a support member 45 where the elastic displacement parts 39 are energized to maintain a secure elastic displacement state.

公开(公告)号：JP2000195094A

公开(公告)日：2000-07-14

申请号：JP37437498

申请日：1998-12-28

Applicant: SONY CORP

Inventor： KAJIYAMA YOSHIHIRO ,  KUMAKURA JIYUNZOU ,  OSADA YASUO ,  KUROIWA TOSHIYUKI ,  NAGASAKA HIDEO ,  KONDO KANESHIRO ,  SHIMADA YUTAKA ,  MATSUMOTO KATSUO ,  ISHIZEKI HIROSHI ,  HIROZAWA SHUICHI ,  SUGIHARA YOSHIO

IPC: G11B7/08 ,  G11B7/135

Abstract: PROBLEM TO BE SOLVED: To easily assemble a light pick-up device and easily adjust the direction of light beam being applied to an optical disk. SOLUTION: A device is provided with a base 1 where an opening part 11 in that a lens barrel 6 with an optical device 8 including a light source is inserted is formed and an objective lens drive mechanism 16 that has an objective lens 15 for applying a light beam being emitted from the light source being arranged at the lens barrel 6 while converging it to an optical disk and is mounted to the base 1 by supporting the objective lens 15 so that it can be driven and displaced in two-axis directions that orthogonally cross each other. In this case, the lens barrel 6 that is inserted into the opening part 11 of the base 1 is supported by the base 1 so that it can be rotated with the light axis of the lens barrel 6 as a center and at the same time is pressed and supported in a direction being in parallel with the light axis of the lens barrel 6 by press support parts 27 and 28 being provided at the objective lens drive mechanism 16.