Title:
モールドプレス成形用光学ガラス組成物
Document Type and Number:
Japanese Patent JP5108248
Kind Code:
B2
Abstract:
There is provided a glass composition having a devitrification temperature of 1000° C. or below, a glass transformation temperature (Tg) of 535° C. or below and a specific gravity within a range from 3 to 4. The glass composition has a refractive index (nd) within a range from 1.60 to 1.75 and an Abbe number (nud) within a range from 50 to 60.
Inventors:
Koji Shimizu
Application Number:
JP2006112975A
Publication Date:
December 26, 2012
Filing Date:
April 17, 2006
Export Citation:
Assignee:
OHARA CORPORATION
International Classes:
C03C3/068; C03B11/00; G02B1/00
Domestic Patent References:
| JP3377454B2 | ||||
| JP2001130924A | ||||
| JP2004315324A | ||||
| JP6056472A | ||||
| JP7300338A | ||||
| JP2006096610A |
Other References:
J Qiu,Lower non-radiative transition probability in Er3+-doped bromide-modified sulfide glasses,Journal of Non-Crystalline Solids,2001年,Volume 292, Issues 1-3,p.88-92
Attorney, Agent or Firm:
Takahashi Hayashi & Partners