Study on basic problems in real-time 3D holographic display

2013 ◽  
Author(s):  
Jia Jia ◽  
Juan Liu ◽  
Yongtian Wang ◽  
Yijie Pan ◽  
Xin Li
Keyword(s):  
Real Time ◽  
Holographic Display

Investigation on dynamic holographic display in liquid crystal film doped with carbon dots

2020 ◽  
Vol 10 (6) ◽  
pp. 780-787
Author(s):  
Hongyue Gao ◽  
Suna Li ◽  
Jicheng Liu ◽  
Wen Zhou ◽  
Fan Xu ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Electric Field ◽  
Real Time ◽  
Diffraction Efficiency ◽  
Carbon Dots ◽  
Applied Electric Field ◽  
Light Polarization ◽  
Forming Process ◽  
Time Dynamic ◽  
Holographic Display

In this paper, we studied the holographic properties of liquid crystal (LC) thin film doped with carbon dots (CDs) which can be used as real-time holographic display screen. The maximum value of diffraction efficiency can reach up to 30% by using a low applied electric field 0.2 V/μm. Holograms in the LC film can be dynamically formed and self-erased. The hologram build-up time and the hologram self-erasure time in the material is fast enough to realize video refresh rate. In addition, the forming process of hologram was studied. The holographic diffraction efficiency was measured depending on the intensity of recording light, applied electric field, the intensity of readout light, and readout light polarization direction. Triple enhancement of the diffraction efficiency value by the modulation of voltage under the condition of low recording energy is presented. Therefore, we develop an easy way to obtain real-time dynamic holographic red, green and blue displays with high diffraction efficiency, which allow the LC film doped with CDs to be used as a holographic 3D display screen.

Real-time holographic display: improvements using a multichannel acousto-optic modulator and holographic optical elements

1991 ◽  
Author(s):  
Pierre St-Hilaire ◽  
Stephen A. Benton ◽  
Mark E. Lucente ◽  
John S. Underkoffler ◽  
Hiroshi Yoshikawa
Keyword(s):  
Real Time ◽  
Optical Elements ◽  
Holographic Display ◽  
Acousto Optic Modulator ◽  
Holographic Optical Elements

Real-Time Phase-Only Spatial Light Modulators for 2D Holographic Display

2015 ◽  
Vol 11 (3) ◽  
pp. 278-284 ◽  
Author(s):  
N. Collings ◽  
J. L. Christmas ◽  
D. Masiyano ◽  
W. A. Crossland
Keyword(s):  
Real Time ◽  
Spatial Light Modulators ◽  
Holographic Display ◽  
Light Modulators

A real-time holographic display using doped liquid crystals

SPIE Newsroom ◽  
2014 ◽  
Author(s):  
Yikai Su ◽  
Xiao Li ◽  
Chao Ping Chen ◽  
Yan Li
Keyword(s):  
Liquid Crystals ◽  
Real Time ◽  
Holographic Display

85‐5: Late‐News‐Paper: Real Time Dynamic Holographic Display Based on Perovskite Doped Liquid Crystal

2020 ◽  
Vol 51 (1) ◽  
pp. 1292-1295
Author(s):  
Siyao Wu ◽  
Dingyan Xu ◽  
Zekun Yan ◽  
Xinglei Xu ◽  
Yunfeng Wang ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Real Time ◽  
Time Dynamic ◽  
Holographic Display ◽  
Late News

scholarly journals Real-time three-dimensional holographic display using a monolithic organic compound dispersed film

2012 ◽  
Vol 2 (8) ◽  
pp. 1003 ◽  
Author(s):  
Naoto Tsutsumi ◽  
Kenji Kinashi ◽  
Wataru Sakai ◽  
Junichi Nishide ◽  
Yutaka Kawabe ◽  
...  
Keyword(s):  
Organic Compound ◽  
Real Time ◽  
Three Dimensional ◽  
Holographic Display

scholarly journals Development of Real-Time Hand Gesture Recognition for Tabletop Holographic Display Interaction Using Azure Kinect

Sensors ◽  
2020 ◽  
Vol 20 (16) ◽  
pp. 4566
Author(s):  
Chanhwi Lee ◽  
Jaehan Kim ◽  
Seoungbae Cho ◽  
Jinwoong Kim ◽  
Jisang Yoo ◽  
...  
Keyword(s):  
Real Time ◽  
Gesture Recognition ◽  
Hand Gesture Recognition ◽  
Depth Image ◽  
Hand Gesture ◽  
Leap Motion ◽  
Hand Gestures ◽  
Actual Object ◽  
Holographic Display ◽  
Continuous Rotation

The use of human gesturing to interact with devices such as computers or smartphones has presented several problems. This form of interaction relies on gesture interaction technology such as Leap Motion from Leap Motion, Inc, which enables humans to use hand gestures to interact with a computer. The technology has excellent hand detection performance, and even allows simple games to be played using gestures. Another example is the contactless use of a smartphone to take a photograph by simply folding and opening the palm. Research on interaction with other devices via hand gestures is in progress. Similarly, studies on the creation of a hologram display from objects that actually exist are also underway. We propose a hand gesture recognition system that can control the Tabletop holographic display based on an actual object. The depth image obtained using the latest Time-of-Flight based depth camera Azure Kinect is used to obtain information about the hand and hand joints by using the deep-learning model CrossInfoNet. Using this information, we developed a real time system that defines and recognizes gestures indicating left, right, up, and down basic rotation, and zoom in, zoom out, and continuous rotation to the left and right.

Real time 3D holographic display

2012 ◽  
Author(s):  
Luigi Loreti ◽  
R. Ceccarelli ◽  
A. Loreti ◽  
A. Borro
Keyword(s):  
Real Time ◽  
Holographic Display
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