Results 11 to 20 of about 5,651,449 (268)
Review of computer-generated hologram algorithms for color dynamic holographic three-dimensional display [PDF]
Light: Science & Applications, 2022 Holographic three-dimensional display is an important display technique because it can provide all depth information of a real or virtual scene without any special eyewear.
Dapu Pi, Juan Liu, Yongtian Wang
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High Resolution Computer-Generated Rainbow Hologram
Applied Sciences, 2018 We have developed an output device for a computer-generated hologram (CGH) named a fringe printer, which can output a 0.35- μ m plane-type hologram. We also proposed several CGH with a fringe printer.
Takeshi Yamaguchi, Hiroshi Yoshikawa
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Computer-Generated Hologram Based on Reference Light Multiplexing for Holographic Display
Applied Sciences, 2021 In this article, we propose a reference light wave multiplexing scheme to increase the information capacity of computer-generated holograms. The holograms were generated by different reference light waves and superimposed together as a multiplexed ...
Dapu Pi, Juan Liu
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Sub-Terahertz Computer Generated Hologram with Two Image Planes
Applied Sciences, 2019 An advanced optical structure such as a synthetic hologram (also called a computer-generated hologram) is designed for sub-terahertz radiation. The detailed design process is carried out using the ping-pong method, which is based on the modified ...
Mateusz Surma +3 more
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An Image Encryption Scheme of Logistic Modulation Using Computer-Generated Hologram and Chaotic Map
Journal of Electrical and Computer Engineering, 2018 We introduce an image encryption method based on computer-generated hologram (CGH) and two-dimensional Sine Logistic modulation map (2D-SLMM). We combine CGH and 2D-SLMM to improve encryption security. During the encryption process, the hologram needs to
Hui Ren, Jun Wang, Qiong-Hua Wang
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Monochrome Image Hologram (MIH) [PDF]
مجلة بغداد للعلوم, 2008 A new computer-generated optical element called a monochrome image hologram (MIH) is described. A real nonnegative function to represent the transmittance of a synthesized hologram is used.
Baghdad Science Journal
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Optimization of Phase-Only Computer-Generated Holograms Based on the Gradient Descent Method
Applied Sciences, 2020 The Gerchberg–Saxton (GS) algorithm is a Fourier iterative algorithm that can effectively optimize phase-only computer-generated holograms (CGHs). This study proposes a new optimization technique for phase-only CGHs based on the gradient descent method ...
Shujian Liu, Yasuhiro Takaki
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Evaluation of permissible pixel positioning errors for displaying computer-generated holograms in projection photolithography [PDF]
Научно-технический вестник информационных технологий, механики и оптики, 2021 The authors carried out the estimation of the permissible positioning errors when displaying reflective phase holograms intended for application in holographic photolithography on solid media using electron-beam lithography devices.
Sergey N. Koreshev +2 more
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ETRI Journal, 2021 We propose an efficient method for synthesizing mesh-based realistic computer-generated hologram (CGH). In a previous nonanalytic mesh-based CGH synthesis, the angular spectrum of the two-dimensional (2D) plane is calculated using the fast Fourier ...
Han-Ju Yeom +3 more
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Analytic Computer Generated Hologram Design
, 2022 For a given asphere the grating equation is used to derive the design for a Computer Generated Hologram (CGH), sometimes referred to as a diffractive null corrector. The CGH converts a spherical wavefront to the shape appropriate for the given asphere as
Gallatin, Gregg M.
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