Projection device and spatial imaging method

A projection device, comprising:

• an optical fiber scanner array;
• a light source, which is located on an incident light path of the optical fiber scanner array;
• and
• an adjustment and control module assembly, which is configured to couple, according to a virtual scene to be displayed, light emitted by the light source into the optical fiber scanner array, and to control the optical fiber scanner array to project pencil beams to a plurality of virtual object points corresponding to the virtual scene and located in space, such that multiple pencil beams projected to each of the plurality of virtual object points form a bundle of emitting light beams,
• wherein the adjustment and control module assembly is specifically configured to couple light emitted from the light source into the optical fiber scanner array and to control the optical fiber scanner array to project the pencil beams to the plurality of virtual object points located in space, based on a mapping relation between spatial position information and scanning information of each virtual object point in the plurality of virtual object points corresponding to the virtual scene to be displayed, and
• the spatial position information comprises direction information and depth information of the virtual object point relative to the optical fiber scanner array;
• and the scanning information comprises at least a scanning time, a scanning angle, and output energy of respective ones of a plurality of optical fiber scanning units in the optical fiber scanner array which correspond to each respective virtual object point.