Title:
OPTICAL PICKUP DEVICE, OPTICAL ELEMENT USED FOR OPTICAL PICKUP DEVICE, AND METHOD FOR PRODUCING OPTICAL ELEMENT
Document Type and Number:
WIPO Patent Application WO/2005/006322
Kind Code:
A1
Abstract:
Disclosed is an optical element for optical pickup devices which is obtained by shaping a resin material wherein inorganic particles having a diameter of 30 nm or less are dispersed in a plastic resin. Also disclosed are an optical pickup device using such an optical element and a method for producing such an optical element.
Inventors:
ATARASHI YUICHI (JP)
YAMASHITA KIYOSHI (JP)
TAIMA YASUO (JP)
YAMASHITA KIYOSHI (JP)
TAIMA YASUO (JP)
Application Number:
PCT/JP2004/009881
Publication Date:
January 20, 2005
Filing Date:
July 05, 2004
Export Citation:
Assignee:
KONICA MINOLTA OPTO INC (JP)
ATARASHI YUICHI (JP)
YAMASHITA KIYOSHI (JP)
TAIMA YASUO (JP)
ATARASHI YUICHI (JP)
YAMASHITA KIYOSHI (JP)
TAIMA YASUO (JP)
International Classes:
B29C45/00; G02B1/04; G02B5/18; G11B7/135; B29C45/26; G11B7/00; G11B7/125; (IPC1-7): G11B7/135; B29C33/38; B29C45/26; G02B1/04; G02B3/02; G02B5/18; G11B7/22
Foreign References:
| JP2003073563A | 2003-03-12 | |||
| JP2003073564A | 2003-03-12 | |||
| JP2001235677A | 2001-08-31 | |||
| JP2001260139A | 2001-09-25 | |||
| JP2001201601A | 2001-07-27 | |||
| JP2002047425A | 2002-02-12 | |||
| JP2002303701A | 2002-10-18 |
Other References:
See also references of EP 1646041A4
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