Patent ID: 11971558
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 9:
10. A beam steering apparatus comprising:
a light source configured to emit light;
a spatial light modulator configured to transmit the light to an object by adjusting a travelling direction of the light emitted from the light source;
a photodetector configured to detect the light reflected from the object; and
a controller configured to control the spatial light modulator,
wherein the spatial light modulator comprises:
a first reflective layer;
a cavity layer provided on the first reflective layer; and
a second reflective layer including a plurality of unit lattice structures that are provided on the cavity layer and spaced apart from each other, and

wherein each of the plurality of unit lattice structures has a polycrystalline structure, and at least one grain of the polycrystalline structure has a column shape and a height equal to a height of the plurality of unit lattice structures.