Title:
鉛フリーの屈折率分布型レンズ用母材ガラス組成物、屈折率分布型レンズ、屈折率分布型レンズの製造方法、光学製品及び光学機器
Document Type and Number:
Japanese Patent JP4013913
Kind Code:
B2
Abstract:
A mother glass composition for graded index lenses, comprising the following glass components in mol %: 40<=SiO2<=65, 1<=TiO2<=10, 0<=MgO<=22, 2<=Li2O<=18, 2<=Na2O <=20, 6<=Li2O+Na2O<=38, and from 0.1 to 15 mol % of any two or more of CaO, SrO and BaO, a graded index lens using the mother glass composition, a manufacturing method of the graded index lens, and an optical product and an optical instrument using the graded index lens, are provided.
Inventors:
Taro Miyauchi
Kazuya Okawa
Tatsushi Shiba
Matsuyama Tozo
Kazuya Okawa
Tatsushi Shiba
Matsuyama Tozo
Application Number:
JP2004110769A
Publication Date:
November 28, 2007
Filing Date:
April 05, 2004
Export Citation:
Assignee:
NIPPON SHEET GLASS COMPANY,LIMITED
International Classes:
C03C3/093; C03C3/062; C03C3/064; C03C3/066; C03C3/068; C03C3/078; C03C3/089; C03C3/091; C03C3/095; C03C3/097; C03C21/00; G02B3/00; G02B9/00
Domestic Patent References:
| JP63170247A | ||||
| JP62012635A | ||||
| JP2001139341A | ||||
| JP2002211947A | ||||
| JP57095848A | ||||
| JP9048632A | ||||
| JP7088234B2 | ||||
| JP2002318302A | ||||
| JP63064941A |
Foreign References:
| WO2003084890A1 |
Other References:
ガラス工学ハンドブック,日本,朝倉書店,1999年 7月 5日,初版,187
Attorney, Agent or Firm:
Tsuyoshi Shigeno