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US 2026/0103420 A1Published application
Glass and method for manufacturing glass
AssigneeAGC Inc.
InventorsSatoru KURATA, Tomonori KIMURA, Takanori FUKUSHI
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Abstract
Even when a curved surface portion is formed on glass having a high refractive index, deterioration of optical characteristics is suppressed. A glass (10) has a refractive index nd of 1.77 or more, an internal transmittance of 10 mm in thickness with respect to light having a wavelength of 460 nm of 89% or more, a curved surface portion (13) having a curvature radius of 10000 mm or less in at least a part of a peripheral portion, and a thickness deviation of 1% or less of a maximum thickness.
Claims18
A glass having
- a refractive index nd of 1.77 or more,
- an internal transmittance of 10 mm in thickness with respect to light having a wavelength of 460 nm of 89% or more,
- a curved surface portion having a curvature radius of 10000 mm or less in at least a part of a peripheral portion, and
- a thickness deviation of 1% or less of a maximum thickness.
1 more element
A method for manufacturing a glass having a curved surface portion, the method comprising:
- heating a glass base plate;
- applying an external force to the heated glass base plate to form the curved surface portion having a curvature radius of 10000 mm or less in at least a part of a peripheral portion of the glass base plate;
- and
- obtaining the glass wherein
- a refractive index nd is 1.77 or more,
- an internal transmittance of a thickness of 10 mm with respect to light having a wavelength of 460 nm is 89% or more, and
- a thickness deviation is 1% or less of a maximum thickness.
4 more elements
Dependencies are inferred from the claim text.