Patent ID: 11892633
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 17:
18. The display apparatus of claim 1, wherein the plurality of volume gratings comprise:
a plurality of first volume gratings configured to diffract, at a first angle, light of a first wavelength band incident on the first surface at a pre-defined incident angle;
a plurality of second volume gratings configured to diffract, at a second angle that is different from the first angle, light of a second wavelength band that is different from the first wavelength band, incident on the first surface at the pre-defined incident angle; and
a plurality of third volume gratings configured to diffract, at a third angle that is different from the first angle and the second angle, light of a third wavelength band that is different from the first wavelength band and the second wavelength band, incident on the first surface at the pre-defined incident angle.