Title:
OPTICAL GLASS
Document Type and Number:
WIPO Patent Application WO/2017/090646
Kind Code:
A1
Abstract:
An optical glass is provided which is suitable as an imaging lens used in a vehicle-mounted camera exposed to harsh environments, and has a high refractive index and high strength. This optical glass has a reinforcement layer in the surface layer, wherein the depth of the reinforcement layer is 1μm or more from the surface of the optical glass, and the refractive index (nd) of the optical glass is 1.73-2.10.
Inventors:
AKIBA SHUSAKU (JP)
NAGASHIMA TATSUO (JP)
SAWAMURA SHIGEKI (JP)
NAGASHIMA TATSUO (JP)
SAWAMURA SHIGEKI (JP)
Application Number:
PCT/JP2016/084717
Publication Date:
June 01, 2017
Filing Date:
November 24, 2016
Export Citation:
Assignee:
ASAHI GLASS CO LTD (JP)
International Classes:
C03C3/097; C03C3/068; C03C3/155; C03C21/00; G02B1/00
Domestic Patent References:
| WO2004110942A1 | 2004-12-23 |
Foreign References:
| JPS605037A | 1985-01-11 | |||
| JPS54161620A | 1979-12-21 | |||
| JPS61232243A | 1986-10-16 | |||
| JP2010105897A | 2010-05-13 | |||
| JP2000016830A | 2000-01-18 | |||
| JP2006131476A | 2006-05-25 | |||
| JP2013256446A | 2013-12-26 |
Other References:
See also references of EP 3381872A4
Attorney, Agent or Firm:
SAKURA PATENT OFFICE, P.C. (JP)
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