Three-dimensional distance information acquisition system and electronic device including the same
AssigneeSamsung Electronics Co., Ltd.
InventorsJunghyun Park, Sunil Kim, Minkyung Lee, Byunggil Jeong
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Abstract
A three-dimensional (3D) distance information acquisition system and an electronic device including the same are provided. The 3D distance information acquisition system includes: a transmitter including a light source configured to emit a light based on a time division method and a spatial light modulator configured to steer the light incident from the light source to each scan point on an object; a receiver including a photodetector configured to detect the light reflected from the scan point of the object; and a processor configured to obtain 3D distance information based on the light detected by the receiver.
Claims19
A three-dimensional (3D) distance information acquisition system comprising:
- a transmitter comprising a light source configured to emit a light based on a time division method and a spatial light modulator configured to steer the light incident from the light source to each scan point on an object;
- a receiver comprising a photodetector configured to detect the light reflected from the scan point of the object;
- and
- a processor configured to obtain 3D distance information based on the light detected by the receiver,
- wherein the spatial light modulator comprises:
- a first material layer;
- a cavity provided on an entirety of a surface of the first material layer, the light incident being resonated in the cavity;
- and
- a second material layer comprising a grating structure provided on the cavity, and
- wherein the second material layer comprises:
- a first doped semiconductor layer contacting the cavity;
- an intrinsic semiconductor layer contacting the first doped semiconductor layer;
- and
- a second doped semiconductor layer contacting the intrinsic semiconductor layer.
A distance sensor comprising:
- a transmitter comprising:
- a light source configured to turn on all semiconductor-based laser diodes of the light source at each scan time, and emit a collimated pencil beam using the semiconductor-based laser diodes at each scan time;
- and
- a spatial light modulator configured to steer the collimated pencil beam incident from the light source to each scan point on an object;
- a receiver comprising a photodetector configured to detect light reflected from the scan point of the object;
- and
- a processor configured to obtain 3D distance information based on the light detected by the receiver,
- wherein the spatial light modulator comprises:
- a first material layer;
- a cavity provided on an entirety of a surface of the first material layer, the light incident being resonated in the cavity;
- and
- a second material layer comprising a grating structure provided on the cavity, and
- wherein the second material layer comprises:
- a first doped semiconductor layer contacting the cavity;
- an intrinsic semiconductor layer contacting the first doped semiconductor layer;
- and
- a second doped semiconductor layer contacting the intrinsic semiconductor layer.
Dependencies are inferred from the claim text.