Results 251 to 260 of about 3,702 (285)

Computer-generated microwave holograms

American Journal of Physics, 1980
Using the phasor method of superposition of waves, the intensity pattern from a system of microwave sources is calculated point by point on a plane corresponding to a film emulsion. The pattern is printed and directly converted to a hologram for 3-cm microwaves.
Charles W. Leming, Orestes Patterson Hastings   +1 more
openaire   +1 more source

Stereoscopic Computer-Generated Hologram

Digital Holography and Three-Dimensional Imaging, 2016
Stereoscopic computer-generated hologram (SCGH) is able to provide accurate depth cues for three-dimensional display. We proposed to use look-up table instead of directly point-by-point computation to reduce the computation time of SCGH. The problem of artifacts arose in using lookup table is also discussed.
Chen-Yu Yu, Sung-Lin Lu, Jung-Ping Liu
openaire   +1 more source

Multichannel computer generated holograms

2000 Digest of the LEOS Summer Topical Meetings. Electronic-Enhanced Optics. Optical Sensing in Semiconductor Manufacturing. Electro-Optics in Space. Broadband Optical Networks (Cat. No.00TH8497), 2002
Detour phase computer generated holograms still remain under research due to their interesting characteristics. Many researchers have proposed several multiplexing methods, using detour holograms, where they have been able to perform an image reconstruction in various diffraction orders.
M.A. Araiza-Esquivel, S. Guel-Sandoval
openaire   +1 more source

Computer-Generated Disk Hologram

Biomedical Optics, 2008
It is difficult to realize a computer-generated disk hologram due to the needs of high resolution output and huge computation. We have achieved to make the computer-generated disk hologram by using the fringe printer.
Takeshi Yamaguchi, Tomohiko Fujii, Hiroshi Yoshikawa   +2 more
openaire   +1 more source

Reconfigurable computer generated holograms

Optics Communications, 1994
Abstract Reconfigurable Fourier plane computer generated holograms are implemented by optically reducing a binary hologram image from an electrically addressed spatial light modulator onto a phase-only optically addressed spatial light modulator.
Andrew Kirk, Tomohira Tabata, Masatoshi Ishikawa, Haruyoshi Toyoda   +3 more
openaire   +1 more source

Applications of Computer Generated Hologram

Advances in Imaging, 2009
In this paper we describe the use of computer-generated holograms in creating light diffusing film for use in back lighted liquid crystal displays (LCD).
openaire   +1 more source

Polarizing computer-generated holograms

Optical Engineering, 1993
Polarizing computer-generated holograms (PCGH) may be useful combining different optical functions such as polarizing, imaging, beam shaping, and beamsplitting in one element. We propose the fabrication of PCGHs based on microstructuring of polarizing or birefringent materials.
openaire   +1 more source

Computer-generated hologram statistics

SPIE Proceedings, 2010
The statistical distributions of phase values in computer-generated holograms produced with iterative algorithms are studied. Useful relationships between the parameter values applied in the iterative technique used for their generation and measured performance are provided.
openaire   +1 more source

Optical image encryption and authentication using phase-only computer-generated hologram

Optics and Lasers in Engineering, 2021
Xiaogang Wang, Bijun Xu, Junlang Chen
exaly  

Image encryption based on computer generated hologram and Rossler chaotic system

Optical and Quantum Electronics, 2021
Raied K Jamal, Salam K Mousa, Jamal Raied K   +2 more
exaly