Patent ID: 11906746
Assignee: SCHOTT AG
Field: Materials, metallurgy (Chemistry)
Classification: CPC G  C | IPC F  G

Claim 11:
12. An augmented reality device, comprising:
a light guide plate, including:
an optical glass, the optical glass having a refractive index nd of at least 1.75 or of at least 1.80 and including Nb2O5 in an amount of at least 15 mol % and P2O5 in an amount of at least 19 mol %, the light guide plate having an internal transmission of at least 0.80 or of at least 0.90, measured at a wavelength of 440 nm and a sample thickness of 10 mm, wherein the optical glass has a ratio of density to the refractive index nd of less than 2.2 or less than 2.1.