Title:
OPTICAL GLASS, OPTICAL ELEMENT, OPTICAL SYSTEM, CEMENTED LENS, OBJECTIVE LENS FOR MICROSCOPE, INTERCHANGEABLE LENS FOR CAMERA, AND OPTICAL DEVICE
Document Type and Number:
WIPO Patent Application WO/2024/070613
Kind Code:
A1
Abstract:
An optical glass in which La3+ content: 5 to 35%, Si4+ content: 5 to 25%, Nb5+ content: 5 to 35%, Al3+ content: 5 to 35%, and total content of Ti4+, Zr4+, Nb5+, Ta5+, and Al3+ (Ti4++Zr4++Nb5++Ta5++al3+): 45 to 80%, expressed in mol% of cation.
Inventors:
TAKASU SHUHEI (JP)
YOSHIMOTO KOHEI (JP)
YOSHIMOTO KOHEI (JP)
Application Number:
PCT/JP2023/032958
Publication Date:
April 04, 2024
Filing Date:
September 11, 2023
Export Citation:
Assignee:
NIKON CORP (JP)
International Classes:
C03C3/097; G02B1/00
Domestic Patent References:
| WO2010137276A1 | 2010-12-02 | |||
| WO2018037797A1 | 2018-03-01 | |||
| WO2019058617A1 | 2019-03-28 |
Foreign References:
| JP2015040171A | 2015-03-02 | |||
| JP2018525310A | 2018-09-06 |
Attorney, Agent or Firm:
SHOYO INTELLECTUAL PROPERTY FIRM (JP)
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