Back to results
US 2026/0209108 A1Published application
Optical glass, optical element, optical system, objective lens for microscope, interchangeable lens for camera, cemented lens, and optical device
AssigneeHikari Glass Co., Ltd.
InventorsTakato KODAMA, Miyuki ITO
Life of this patent
Estimating the term…
Abstract
An optical glass comprising, in mass %: P2O5 content: 30% to 70%; B2O3 content: 0% to 33%; BaO content: 5% to 45%; MgO content: more than 0% and 15% or less; wherein a ratio of the MgO content to a total content of Na2O and K2O (MgO/(Na2O+K2O)) is 4 or more.
Claims22
An optical glass comprising, in mass %:
- P2O5 content:
- 30% to 70%;
- B2O3 content:
- 0% to 33%;
- BaO content:
- 5% to 19%;
- MgO content:
- more than 0% and 15% or less;
- wherein a ratio of the MgO content to a total content of Na2O and K2O (MgO/(Na2O+K2O)) is 4 or more.
6 more elements
Dependencies are inferred from the claim text.