Patent ID: 11933995
Assignee: META PLATFORMS TECHNOLOGIES, LLC
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 4:
5. The optical diffuser of claim 3, wherein the first light has a wavelength within a first predefined spectral range, the optical diffuser further comprising:
a third surface proximate to the second surface; and
optically anisotropic molecules disposed between the second surface and the third surface and arranged such that the optical diffuser diffuses third light as well as the first light and transmits fourth light as well as the second light, wherein:
the third light has the first polarization and a wavelength within a second predefined spectral range that is different from the first predefined spectral range;
the fourth light has a wavelength outside of the first predefined spectral range and the second predefined spectral range; and
the optical diffuser is configured to transmit the fourth light regardless of a polarization of the fourth light.