Title:
INTEGRALLY MOLDED LENS AND PICKUP HAVING THE SAME, METAL MOLD FOR MOLDING LENS AS WELL AS METHOD FOR ADJUSTING PICKUP
Document Type and Number:
Japanese Patent JPH09230111
Kind Code:
A
Abstract:
To simplify the assembly and adjustment of lenses of a pickup having the lenses for each of disks having different substrate thicknesses.
The integrally molded lens having the same positional relation of the respective lens faces with the mounting faces is manufactured by integrally molding the lens parts consisting of the lens faces 3, 5, the lens parts consisting of the lens faces 4, 6, the mounting surface 2a for the lens faces 3, 4 and the mounting surface la for the lens faces 5, 6. The shapes of the lens faces 3, 4, 5, 6 are so designed that the lenses optimized for the disks of the substrate thicknesses varying in the lens parts formed by these lens faces are obtd.
Inventors:
INUI TETSUYA
SAKAI KEIJI
NAGAURA TOSHIICHI
SAKAI KEIJI
NAGAURA TOSHIICHI
Application Number:
JP3411096A
Publication Date:
September 05, 1997
Filing Date:
February 21, 1996
Export Citation:
Assignee:
SHARP KK
International Classes:
G02B3/00; B29C33/42; B29D11/00; G11B7/135; B29L11/00; (IPC1-7): G02B3/00; B29C33/42; B29D11/00; G11B7/135
Attorney, Agent or Firm:
Shusaku Yamamoto