Patent ID: 11906757
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 24:
25. A three-dimensional (3D) display device comprising:
a light source configured to emit a light beam comprising a plurality of wavelength bands;
a beam deflector configured to deflect the light beam;
at least one processor configured to control the beam deflector to deflect light in a predetermined direction; and
a spatial light modulator configured to diffract the light beam to form a holographic image,
wherein the beam deflector comprises:
a first sub deflector configured to deflect light of a first wavelength band in a first direction and a second direction that intersects the first direction, and convert a polarization direction of the light of the first wavelength band; and
a second sub deflector configured to deflect light of a second wavelength band that is different from the first wavelength band in the first direction and the second direction, and convert a polarization direction of the light of the second wavelength band;
a third sub deflector configured to deflect light of a third wavelength band that is different from the first wavelength band and the second wavelength band, respectively; and
a final polarization conversion element configured to change the polarization direction of the light of the first wavelength band, the polarization direction of the light of the second wavelength band, and the polarization direction of the light of the third wavelength band to coincide with one another, and
wherein the first sub deflector, the second sub deflector, and the third sub deflector are provided in a path of the light beam emitted from the light source.