chanelink logo
CHANELINK
English

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

1133
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

  • LPKF 2024 H1 revenue up 15% year-on-year

    Recently, LPKF Laser, a leading supplier of innovative laser solutions in Germany, released its performance report for the first half of the 2024 fiscal year as of June 30, demonstrating the company's steady performance and forward-looking layout in a complex market environment. According to the financial report, LPKF Laser&Electronics SE achieved significant growth in comprehensive revenue ...

    2024-07-31
    See translation

  • Internationalization Strategy Enters Stage 2.0 | HSG Hsglaser Thailand Manufacturing Base Holds Grand Opening

    At 9:00 am local time on June 26th, the opening ceremony of Hsglaser Thailand Manufacturing Base was grandly held in Bangkok Industrial Park, Thailand. This not only marks a significant expansion of Hsglaser's global strategic map, but also signifies that its international layout has officially entered a new 2.0 stage, and is another important milestone for Hsglaser to showcase its outstanding str...

    2024-06-27
    See translation

  • Significant progress has been made in the research on the detection of microwave electric fields in the Rydberg area of Shanghai Institute of Optics and Technology

    Recently, the Aerospace Laser Technology and System Department of the Shanghai Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, and the East China Research Team of the Key Laboratory of Quantum Optics, Chinese Academy of Sciences, together with the research team of Professor Chen Liqing of East China Normal University, demonstrated a Rydberg microwave sensor with high sens...

    2024-05-08
    See translation

  • Danish scientists have created solar cells based on selenium using a new laser annealing technique

    A team of scientists at the Technical University of Denmark has created a selene-based solar cell by replacing thermal annealing with a new laser annealing strategy."In our work, we investigated the potential of this laser annealing strategy specifically for selenium thin film solar cells, and we report a new world record for fill factor, a new world record for ideal factor, and the most advanced ...

    2023-09-06
    See translation

  • New type of metasurface with adjustable beam frequency and direction

    Recently, according to the journal Nature Nanotechnology, a team from the California Institute of Technology reported that they have constructed a metasurface covered with micro adjustable antennas that can reflect incident light beams: one beam of light enters and multiple beams of light exit, each with a different frequency and propagating in a different direction. This is a new method for proce...

    2024-07-30
    See translation