Holographic displays are advancing in size and quality thanks to research by the Korea Advanced Institute of Science and Technology (KAIST). Current holographic 3D displays are small in size and have limited viewing angles. To combat that KAIST researchers have proposed an alternative method that creates a display of 2cm in length, width and height.
KAIST researchers note that holographic displays “operate by generating carefully tailored light fields that replicate how humans see an actual environment”. Efforts to create displays of this kind have however been stalled by the limited capabilities of wave front modulators. “In particular,” write the researchers, “spatial light modulators have a small diffraction angle range and limited pixel number limiting the viewing angle and image size of a holographic 3D display”. The alternative method controls volume speckle fields to enhance image definition.
Researchers also claim a viewing angle of 35 degrees and said that the image was 2,600 times stronger than the original image definition created without the use of a diffuser.
Research paper: "Ultrahigh-definition Dynamic 3D Holographic Display by Active Control of Volume Speckle Fields."