Combined-screen-based multi-pitching angle suspended panoramic space 3D display device

摘要

This invention discloses a combined-screen-based multi-pitching angle suspended panoramic space 3D display device comprising: a combined deflective diffusing screen, a high speed projector, an image control module, a rotation detecting module, a motor and a drive mechanism. The high speed projector projects the composite images of the 3D objects of different pitching angles and horizontal 360° FOV to different areas of the combined deflective diffusing screen. Each area of the combined deflective diffusing screen controls the deflecting angle and the scattering angle in the vertical direction and the diffusing angle in the horizontal direction, ensuring that the eyes of the surrounding viewers of different height levels can see the 3D images corresponding to their respective positions, representing the 3D scene suspended over the combined deflective diffusing screen.

主权项

1. A combined-screen-based multi-pitching angle suspended panoramic space 3D display device comprising: a combined transmitted deflective diffusing screen, a high speed projector, an image control module, a rotation detecting module, a motor and a drive mechanism; wherein the combined transmitted deflective diffusing screen is connected with the drive mechanism, which, under the drive of the rotation of the motor, drives the combined transmitted deflective diffusing screen to rotate; the rotating axis of the combined transmitted deflective diffusing screen coincides with the lens' optical axis of the high speed projector; the high speed projector is arranged under the combined transmitted deflective diffusing screen, which projects an image upwards to the combined transmitted deflective diffusing screen; the high speed projector is also sequentially connected with the image control module and the rotation detecting module; the combined transmitted deflective diffusing screen comprises multiple transmitted deflective sub-diffusing screens of different chief deflecting angles spliced together, with each transmitted deflective sub-diffusing screen corresponding to one pitching angle; wherein each transmitted deflective sub-diffusing screen comprises transmitted saw-toothed grating and cylindrical grating parallel in the grating direction; the transmitted saw-toothed grating comprises continuous arrangement of multiple triangular prism structures, and all the triangular prism structures in the transmitted saw-toothed grating in each transmitted deflective sub-diffusing screen have the same angle of inclination; the rotation detecting module detects the rotating speed and initial position of the transmitted deflective sub-diffusing screen, and sends the signal of the rotating speed and the initial position to the image control module; the image control module controls the initial position and the projecting frame frequency of the high speed projector according to the signal received, realizing synchronism of the projected image sequence of the high speed projector and the rotation of the combined transmitted deflective diffusing screen.