English

A Large Angle Color Holographic 3D Display System Based on Color LCD Grating

1042
2024-01-24 11:52:41
See translation

Holographic display technology provides the ultimate solution for true 3D display, with enormous potential in augmented reality and virtual reality. However, the color and viewing angle of holographic 3D displays mainly depend on the wavelength of the laser and the pixel size of the current spatial light modulator. The inevitable color difference and narrow viewing angle in conventional systems seriously affect the holographic display effect, hindering the application of holographic 3D display in many fields.

In a new paper published in "Light: Science and Applications", a group of scientists led by Professor Qiang Hua Wang from Beihang University in China and their colleagues have developed a 3D display system with a large viewing angle based on color liquid crystal gratings. The proposed system displays a color perspective of 50.12 º without any color difference.

Beihang researchers use specially designed color liquid crystal gratings with the same diffraction angle to perform secondary diffraction on incident RGB light, expanding the viewing angle through secondary diffraction. Color liquid crystal gratings have three different spacing regions in a liquid crystal unit, corresponding to incident light of different wavelengths. In addition, a method for generating chromatic aberration free holograms has been proposed, which, in conjunction with color liquid crystal gratings, achieves large angle color display. By using the proposed system, 3D color objects can be vividly reconstructed without color difference and viewed from a large perspective.

The reported system solves the problems of small viewing angle and severe color difference in traditional holographic 3D display systems, and has good display effects and broad application prospects in medical, industrial and other fields.

Source: Laser Net

Related Recommendations
  • Van's updates the manufacturer of laser-cut parts

    Van's Aircraft has responded to reports of ruptured dented parts found in AirVenture's latest kit. These defects are caused by external suppliers changing the process of laser cutting parts. From February 2022 to June 2023, Van's moved some parts from traditional punch manufacturing to an outside supplier that can laser cut rivet holes. The move is designed to increase the company's throughput and...

    2023-08-04
    See translation
  • AMC Theatres launches advanced laser projection technology upgrades

    AMC Cinema has long been known as the largest cinema operator in the United States and the world, and has completed upgrades to almost all its venues in the broader Chicago area, including advanced laser projection technology.The technological reform of this chain of stores has made Chicago one of the first areas in AMC's footprint to benefit from CinIonic's cutting-edge projection technology.In e...

    2023-12-23
    See translation
  • AMCM 8 laser M 8K metal 3D printing equipment is about to be launched, equipped with 8 lasers

    In October 2023, Germany's AMCM (EOS, a global technology leader in industrial grade additive manufacturing) announced the upcoming launch of the M 8K metal 3D printing equipment. The device will be equipped with 8 lasers, with a construction volume of 800 x 800 x 1200 millimeters, nearly four times the size of AMCM's previously launched M 4K metal 3D printing device on the market.ArianeGroup's ho...

    2023-10-19
    See translation
  • Processing application of ultrafast laser on bulk metallic glass

    Recently, an international research team led by Professor Zhang Peilei from the School of Materials Science and Engineering at Shanghai University of Engineering and Technology published a review paper titled "Research status of femtosecond lasers and nanosecond lasers processing on bulk metallic glasses (BMGs)" in the renowned journal Optics&Laser Technology in the field of optics and lasers....

    2023-09-18
    See translation
  • Zhongke Yuchen laser welding technology opens up vast space for the welding process of new energy vehicle motors

    The application of laser welding technology in the welding process of new energy vehicle motors is a typical example of Zhongke Yuchen in many welding cases. The main accessories of the automatic laser welding equipment for new energy vehicle motors are imported products, and the welding process is mature and stable.Motor rotorMotor statorLaser welding of motor stator tapThe circumferential wel...

    2023-10-18
    See translation