SELECTIVE VOLUME HOLOGRAPHIC WAVEGUIDE
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United States of America
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Issued Date -
Jan 16, 2025
app pub date -
Oct 24, 2022
filing date -
Oct 24, 2022
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Abstract
The present disclosure provides a waveguide device for generating an eyebox of a display, the waveguide device including: a first volume phase holographic, VPH, grating configured to selectively diffract incident light according to a wavelength and/or an angle of incidence on the first VPH grating to incouple the diffracted incident light into the waveguide device, one or more second VPH gratings configured to selectively diffract the incoupled light according to a wavelength and/or an angle of incidence to direct the incoupled light through the waveguide device; and one or more third VPH gratings configured to selectively diffract the light propagating in the waveguide device according to a wavelength and/or an angle of incidence to outcouple said propagating light, wherein collectively each beam of outcoupled light generates said eyebox.
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