Results 21 to 30 of about 1,828 (164)

High Resolution Multiview Holographic Display Based on the Holographic Optical Element

Micromachines, 2023
Limited by the low space-bandwidth product of the spatial light modulator (SLM), it is difficult to realize multiview holographic three-dimensional (3D) display.
Xiujuan Qin, Xinzhu Sang, Hui Li, Rui Xiao, Chongli Zhong, Binbin Yan, Zhi Sun, Yu Dong   +7 more
doaj   +1 more source

Nonplanar photolithography with computer-generated holograms [PDF]

Optics Letters, 2005
We outline a method for accomplishing photolithography on grossly nonplanar substrates. First we compute an approximation of the diffraction pattern that will produce the desired light-intensity distribution on the substrate to be patterned. This pattern is then digitized and converted into a format suitable for manufacture by a direct-write method ...
Maiden, A., McWilliam, R., Purvis, A., Johnson, S., Williams, G. L., Seed, N. L., Ivey, P. A.   +6 more
openaire   +4 more sources

Perceptually motivated loss functions for computer generated holographic displays

Scientific Reports, 2022
Understanding and improving the perceived quality of reconstructed images is key to developing computer-generated holography algorithms for high-fidelity holographic displays.
Fan Yang, Andrew Kadis, Ralf Mouthaan, Benjamin Wetherfield, Andrzej Kaczorowski, Timothy D. Wilkinson   +5 more
doaj   +1 more source

Application of Kinoform CGHs to an ID Tag System

IEEE Photonics Journal, 2010
In this paper, we successfully apply multilevel kinoform computer-generated hologram (CGH) patterns, which are recorded on a fine texture paper by a photo printer, into the hologram identification (ID) tag system.
Hye-Rim Kim, Ki-Mun Pak, Ki-Woo Jun, Hyun-Whan Choi, Ji-Song Lim, Yong-Hyub Won   +5 more
doaj   +1 more source

Quantum Computer-Generated Holography

IEEE Access
Hologram calculations pose a significant challenge for future holographic displays with extensive fields of view and wide viewing angles. Classical computers may encounter difficulties with these owing to immense computational demands.
Tomoyoshi Shimobaba, Fan Wang, Tomoyoshi Ito   +2 more
doaj   +1 more source

Influence of the ratio of the intensities of the reference and object waves on the intensity distribution in the holographic field

Научно-технический вестник информационных технологий, механики и оптики
The results of the research focused on the reference and object beam intensity ratio effect on the transmittance of computer-generated and analog holograms are presented.
S. N. Koreshev, S. O. Starovoitov
doaj   +1 more source

Partially Overlapping Printing with Digital Filter to Improve Quality of Volume Hologram Printer – Numerical Simulation –

Applied Sciences, 2020
The volume hologram printer is useful for 3D display, because it is selective to the wavelength and be able to reconstruct with the natural illumination.
Hangbo Hua, Takeshi Yamaguchi, Hiroshi Yoshikawa   +2 more
doaj   +1 more source

Form-birefringent computer-generated holograms [PDF]

Optics Letters, 1996
Polarization-selective computer-generated holograms made with form-birefringent nanostructures were designed, fabricated, and evaluated experimentally at 1.5 microm. The fabricated element showed a large polarization contrast ratio (>250:1) and a high diffraction efficiency (>40% for a binary phase level element).
Xu, Fang, Tyan, Rong-Chung, Sun, Pang-Chen, Fainman, Yeshayahu, Cheng, Chuan-Cheng, Scherer, Axel   +5 more
openaire   +3 more sources

Holo-U²Net for High-Fidelity 3D Hologram Generation

Sensors
Traditional methods of hologram generation, such as point-, polygon-, and layer-based physical simulation approaches, suffer from substantial computational overhead and generate low-fidelity holograms.
Tian Yang, Zixiang Lu
doaj   +1 more source

Optogenetic Stimulation of Human Neural Networks Using Fast Ferroelectric Spatial Light Modulator—Based Holographic Illumination

Applied Sciences, 2018
The generation and application of human stem-cell-derived functional neural circuits promises novel insights into neurodegenerative diseases. These networks are often studied using stem-cell derived random neural networks in vitro, with electrical ...
Felix Schmieder, Simon D. Klapper, Nektarios Koukourakis, Volker Busskamp, Jürgen W. Czarske   +4 more
doaj   +1 more source