WAVEGUIDE AND AUGMENTED/MIXED REALITY DEVICE

A waveguide for guiding an image pixel light includes: a solid body including an optical material which is transparent for at least a light with a wavelength of 460 nm; an in-coupling surface located on the solid body; and an out-coupling surface located on the solid body, wherein the optical materi...

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Bibliographic Details
Main Authors Ottermann, Clemens, Weidlich, Stefan, Lentes, Frank-Thomas
Format Patent
LanguageEnglish
Published 21.03.2024
Subjects
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
PHYSICS
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Summary:A waveguide for guiding an image pixel light includes: a solid body including an optical material which is transparent for at least a light with a wavelength of 460 nm; an in-coupling surface located on the solid body; and an out-coupling surface located on the solid body, wherein the optical material has an absorption coefficient κ460 nm for light having a wavelength of 460 nm, a thermal conductivity k, a coefficient of thermal expansion α20° C. at a temperature of 20° C., a refractive index nF related to the hydrogen F-line, and a derivative dnF/dT20° C. which are related in such a way that a thermally induced change of an optical path length within the waveguide due to an absorption of at least one of heat and an optical radiation is quantitatively described by a merit function.
Bibliography:Application Number: US202318470069