Title:
高屈折率光学ホウ酸塩ガラス
Document Type and Number:
Japanese Patent JP7329521
Kind Code:
B2
Abstract:
A borate glass includes from 25.0 mol % to 70.0 mol % B2O3; from 0.0 mol % to 10.0 mol % SiO2; from 0.0 mol % to 15.0 mol % Al2O3; from 3.0 mol % to 15.0 mol % Nb2O5; from 0.0 mol % to 12.0 mol % alkali metal oxides; from 0.0 mol % to 5.0 mol % ZnO; from 0.0 mol % to 8.0 mol % ZrO2; from 0.0 mol % to 15.0 mol % TiO2; less than 0.5 mol % Bi2O3; and less than 0.5 mol % P2O5. The optical borate glass includes a sum of B2O3+Al2O3+SiO2 from 35.0 mol % to 76.0 mol %, a sum of CaO+MgO from 0.0 mol % to 35.5 mol %. The borate glass has a refractive index, measured at 587.6 nm, of greater than 1.70, a density of less than 4.50 g/cm3, and an Abbe number, VD, from 20.0 to 47.0.
Inventors:
Guo, Xiaoju
Mar, Leena
Marquez, Paul Jorge Gaspar
Tan, johnsey
Mar, Leena
Marquez, Paul Jorge Gaspar
Tan, johnsey
Application Number:
JP2020539212A
Publication Date:
August 18, 2023
Filing Date:
January 16, 2019
Export Citation:
Assignee:
Corning Incorporated
International Classes:
C03C3/064; C03C3/066; C03C3/068; C03C3/14; C03C3/155
Domestic Patent References:
| JP2004018371A | ||||
| JP60221338A | ||||
| JP48061517A | ||||
| JP2006137645A | ||||
| JP2015532252A | ||||
| JP2008001551A | ||||
| JP10130033A |
Foreign References:
| DE4222322C1 |
Attorney, Agent or Firm:
Masafumi Yanagida
Hiroyuki Sakano
Hideaki Takahashi
Hiroyuki Sakano
Hideaki Takahashi