Results 171 to 180 of about 15,665 (224)

Double-sided computer-generated holography

Optics Letters, 2023
We present a method for computer-generated holography (CGH) in which different images are reproduced on both sides of a hologram with a single illumination source. In the proposed method, we use a transmissive spatial light modulator (SLM) and a half mirror (HM) located downstream of the SLM. The light modulated by the SLM is partially reflected by the
Ryutaro Suda, Yohei Nishizaki, Makoto Naruse, Ryoichi Horisaki   +3 more
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Incoherent computer-generated holography: publisher’s note

Optics Letters, 2022
This publisher’s note contains a correction to Opt. Lett. 47, 3844 (2022)10.1364/OL.464454.
Ryutaro, Suda, Makoto, Naruse, Ryoichi, Horisaki   +2 more
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Computer-generated holography with ordinary display

Optics Letters, 2023
We propose a method of computer-generated holography (CGH) using incoherent light emitted from a mobile phone screen. In this method, we suppose a cascade of holograms in which the first hologram is a color image displayed on the mobile phone screen. The hologram cascade is synthesized by solving an inverse problem with respect to the propagation of ...
Otoya Shigematsu, Makoto Naruse, Ryoichi Horisaki   +2 more
openaire   +2 more sources

Computer-Generated Holography Algorithms

Frontiers in Optics + Laser Science 2023 (FiO, LS), 2023
Abstract not available.
openaire   +1 more source

Computer-generated holography in photorefractive materials

Optics Letters, 1990
We describe a method to create and reconstruct computer-generated Fourier-transform holograms in photorefractive materials. Holographic reconstructions are obtained from computer-generated data by imaging computer-generated holograms into a BaTiO3 crystal, using either spatially coherent or incoherent light.
L, Pugliese, G M, Morris
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Computer-Generated Holography

2015
Digital holography optically generates a hologram, which is then recorded on a CCD camera, and an image is reconstructed using digital techniques. This chapter discusses the converse, i.e., the hologram is digitally generated and the reconstruction is performed optically, a process known as computer-generated holography (CGH).
Georges T. Nehmetallah, Rola Aylo, Logan A. Williams   +2 more
openaire   +1 more source

Computer generation of binary Fresnel holography

Applied Optics, 2011
Binarization of Fresnel holograms by direct thresholding based on the polarity of the fringe pattern is studied. It is found that if the hologram is binarized (i.e., for black and white hologram pixels) in this manner, only the edges of the object are preserved in the reconstructed image. To alleviate the errors caused by binarization, the use of error
Tsang, Peter, Poon, Ting-Chung, Cheung, W. K., Liu, J. Ping   +3 more
openaire   +3 more sources

Computer generated holography: an introduction

Applied Optics, 1987
A group of papers in the 15 Oct. 1987 issue of Applied Optics describe some recent advances in the field of computer generated holograms, and delineate historical trends.
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Iterative Approaches To Computer-Generated Holography*

Signal Recovery and Synthesis III, 1989
Optics is playing an increasingly important role in the sensing, processing, and transmission of information. The elements that shape the wavefront at various points are a key part of any optical system. In many cases, computer-generated holograms (CGH’s) offer major advantages over conventional refractive optical elements in terms of size, weight, and
Brian K. Jennison, Jan P. Allebach, Donald W. Sweeney   +2 more
openaire   +1 more source

Computer generated holography: novel procedure

Optics Communications, 1993
Abstract It is shown that the spatially filtered image of a generalized wide slit can be used for synthesizing 1D complex amplitude distribution, in a similar fashion to computer generated holography.
Adolf W. Lohmann, J. Ojeda-Castañeda
openaire   +1 more source