Patent ID: 11915437
Assignee: META PLATFORMS TECHNOLOGIES, LLC
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 10:
11. A system comprising:
a head-mounted display; and
a projector device to project light into an imaging environment external to the projector device, the projector device comprising: a broadband light source that emits light having wavelengths within a range of from about 400 nm to about 800 nm;
a diffractive optical element that separates light emitted by the broadband light source into a plurality of light regions comprising a plurality of separate wavelength ranges, each of the plurality of light regions comprising a portion of the emitted light having wavelengths within one of the plurality of separate wavelength ranges and isolated from other portions of the emitted light having wavelengths within other separate wavelength ranges of the plurality of separate wavelength ranges; and
an interference filter that passes light having wavelengths within each of the plurality of separate wavelength ranges and blocks light having wavelengths outside the plurality of separate wavelength ranges and wavelengths between two or more of the plurality of separate wavelength ranges, wherein the interference filter and the diffractive optical element are disposed over an emissive side of the broadband light source.