Fig. 5
From: Full degree-of-freedom polarization hologram by freeform exposure and inkjet printing
Full-color RSD system. a Photo of the display system. The light from the laser projector firstly passes an attenuator and gets collimated by a lens. The diffracted light passes another attenuator before being captured by the camera. b Captured image of a displayed white grid image in a background with FoV rulers, indicating the maximum FoV of display system. c Displayed full-color image. Captured photos of display effect when the camera is focused at d near and e far distances, as denoted by the white boxes