Invention Grant
- Patent Title: Optical glass, glass prefabricated member or optical element prepared therefrom, and optical instrument
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Application No.: US17267046Application Date: 2018-08-17
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Publication No.: US11952311B2Publication Date: 2024-04-09
- Inventor: Wei Sun
- Applicant: CDGM GLASS CO., LTD.
- Applicant Address: CN Sichuan
- Assignee: CDGM GLASS CO., LTD.
- Current Assignee: CDGM GLASS CO., LTD.
- Current Assignee Address: CN Sichuan
- Agent Samson G. Yu
- International Application: PCT/CN2018/101158 2018.08.17
- International Announcement: WO2020/034213A 2020.02.20
- Date entered country: 2021-02-09
- Main IPC: C03C3/068
- IPC: C03C3/068 ; G02B1/00
Abstract:
Disclosed are optical glass, a glass preform or an optical element made therefrom the same and an optical instrument. The optical glass is calculated by a mass percentage content relative to a total mass of glass converted by an oxide, and the optical glass includes: B2O3: 5˜25%, SiO2: 0.5˜15%, ZrO2: 1˜15%, TiO2: 0˜10%, Ta2O5: 0.5˜10%, and La2O3, Gd2O3, Y2O3 and Yb2O3 of which the sum is 50˜75%, and Nb2O5 is not contained, a weight ratio of La2O3 to Gd2O3, i.e., La2O3/Gd2O3, is 1.28˜1.625.
Public/Granted literature
- US20210309560A1 OPTICAL GLASS, GLASS PREFABRICATED MEMBER OR OPTICAL ELEMENT PREPARED THEREFROM, AND OPTICAL INSTRUMENT Public/Granted day:2021-10-07
Information query
