A South Korean research team has developed new technology to improve tabletop holographic displays
Princess Leia, your Star Wars hologram moment may be redeemed. In the original ‘Star Wars’ movie, the inviting but grainy special effects hologram might soon be a true full-color, full-size holographic image, due to advances by a South Korean research team refining 3-D holographic displays.
The team described a novel tabletop display system that allows multiple viewers to simultaneously view a hologram showing a full 3-D image as they walk around the tabletop, giving complete 360-degree access. The paper was published this week in the journal Optics Express, from The Optical Society (OSA).
To be commercially feasible in a range of applications — from medicine to gaming to media — the hologram challenge is daunting. It involves scaling an electronic device to a size small enough to fit on a table top, while making it robust enough to render immense amounts of data needed to create a full-surround 3-D viewing experience from every angle — without the need for special glasses or other viewing aids.
“In the past, researchers interested in holographic display systems proposed or focused on methods for overcoming limitations in the combined spatial resolution and speed of commercially available, spatial light modulators. Representative techniques included space-division multiplexing (SDM), time-division multiplexing (TDM) and combination of those two techniques,” explained Yongjun Lim, of the 5G Giga Communication Research Laboratory, Electronics and Telecommunications Research Institute, South Korea. Lim and his team took a different approach. They devised and added a novel viewing window design.
To implement such a viewing window design, close attention had to be paid to the optical image system. “With a tabletop display, a viewing window can be created by using a magnified virtual hologram, but the plane of the image is tilted with respect to the rotational axis and is projected using with two parabolic mirrors,” Lim explained. “But because the parabolic mirrors do not have an optically-flat surface, visual distortion can result. We needed to solve the visual distortion by designing an aspheric lens.”
Lim further noted, “As a result, multiple viewers are able to observe 3.2-inch size holograms from any position around the table without visual distortion.”
Building on these advances, Lim’s team hopes to implement a key design feature of strategically sizing the viewing window so it is closely related to the effective pixel size of the rotating image of the virtual hologram. Watching through this window, observers’ eyes are positioned to accept the holographic image light field because the system tilts the virtual hologram plane relative to the rotational axis. To enhance the viewing experience the team hopes to design a system in which observers can see 3.2-inch holographic 3-D images floating on the surface of the parabolic mirror system at a rate of 20 frames per second.
Test results of the system using a 3-D model and computer-generated holograms were promising — though right now still in a monochrome green color. Next, the team wants to produce a full-color experience and resolve issues related to undesirable aberration and brightness mismatch among the four digital micromirror devices used in the display.
“We are developing another version of our system to solve those issues and expect to have the next model in the near future, including enhancement of the color expression,” said Lim. “Many people expect that high quality holograms will entertain them in the near future because visualizations are increasingly sophisticated and highly imaginative due to the use of computer-aided graphics and recently-developed digital devices that provide augmented or virtual reality.”
And the Princess Leia hologram? That old miniature was a motivating experience of their work, Lim explained.
The Latest on: 3-D holographic displays
via Google News
The Latest on: 3-D holographic displays
- Holoxica humanises healthcare with 3D holographic systemon November 30, 2020 at 2:06 am
GP and hospital appointments can be conducted in 3D without the need for glasses or headsets Enables quicker diagnoses and increases patient satisfaction Patients can see their scans in 3D remotely ...
- Hardware newson November 26, 2020 at 10:47 pm
A team of researchers at Samsung has developed a slim-panel holographic video display that allows for viewing from a variety of angles. In their paper published in the journal Nature ...
- Continental’s high-performance computer and innovative 3D display win CLEPA awardson November 26, 2020 at 6:30 am
The company has also been recognised with third place in the ‘Connectivity & Automation’ category for its unique Natural 3D Lightfield Centerstack.
- COVID-19 Impact: Which Are the Key Players Evolving In the Growth of Volumetric Display Market?on November 26, 2020 at 2:43 am
Research Dive :The world is experiencing serious impact on social financial sectors, and all global industries are facing challenges during the COVID-19 pandemic. This crisis has negatively impacted ...
- High-Performance Computer and 3D-Display: Continental recognized twice with CLEPA awardon November 26, 2020 at 2:30 am
Continental received a 2020 CLEPA Innovation Award from the European Association of Automotive Suppliers for its Body High-Performance Computer (HPC) and Continental Cooperation Portal in the category ...
- Global 3D Holographic Display and Services Market (2020 to 2025) - Impact of COVID-19 - ResearchAndMarkets.comon November 25, 2020 at 7:41 am
The global 3D holographic display and services market is projected to grow from $607.6 million in 2020 to $1,837.1 million by 2025, at a CAGR of 24.8%. The growth in the 3D holographic display and ...
- Insights on the 3D Holographic Display and Services Global Market to 2025 - Analysis and Forecaston November 23, 2020 at 3:37 am
Disclaimer | Commerce Policy | Made In NYC | Stock quotes by finanzen.net Dublin, Nov. 23, 2020 (GLOBE NEWSWIRE) -- The "Global 3D Holographic Display and Services Market: Focus on Product ...
- IKIN CTO Taylor Scott to Discuss AI and Holographic Content Creation at DeveloperWeek Austin 2020on November 20, 2020 at 2:59 pm
SAN DIEGO, CA / / November 12, 2020 / IKIN™, a leading provider of visual technology solutions for businesses and consumers, announced that Taylor Scott, the company's chief technology officer, will ...
- 3D Display Using A Kinecton November 16, 2020 at 3:59 pm
Instead of the usual Kinect hacks like computer vision or playing Mario, we think the ‘Holographic display’ for the Kinect is one of the most useful implementations of the Kinect we’ve seen.
via Bing News