Results 131 to 140 of about 1,305 (184)

Progress in holographic printing technique

Infrared and Laser Engineering, 2018
Holographic printing technique can achieve a true three-dimensional display of the scene well. Based on different sources and different recording methods of interference patterns, holographic printing techniques can be classified as synthetic holographic stereogram printing, computer-generated hologram printing, and wavefront printing.
黄应清 Huang Yingqing, 苏 健 Su Jian, 陈祎贝 Chen Yibei, 闫兴鹏 Yan Xingpeng, 蒋晓瑜 Jiang Xiaoyu   +4 more
openaire   +1 more source

Color holographic wave-front printing technique

2015 IEEE 13th International Conference on Industrial Informatics (INDIN), 2015
The paper presents design and implementation of a color wavefront holographic printer for white light viewable holograms of three-dimensional (3D) objects from digital contents. The printed hologram was composed as a two-dimensional (2D) array of elemental holograms. The 3D information was encoded in computer generated holograms displayed in succession
Hoonjong Kang, Elena Stoykova, Youngmin Kim, Sunghee Hong, Joosup Park, Jisoo Hong   +5 more
openaire   +1 more source

Holographic Inspection Of Printed Circuit Board

SPIE Proceedings, 1986
The possibility of using real time holographic interferometry (HI) to detect defects in printed circuit boards has been explored. Initial results indicate that real time HI can reveal some of the most common PC board defects such as solder crack, desoldered junctions, trace separation and components snipped at the soldered joints.
K. A. Arunkumar, J. D. Trolinger, S. Hall, D. Cooper   +3 more
openaire   +1 more source

Improvement of printing efficiency in holographic stereogram printing with the combination of a field lens and holographic diffuser

Applied Optics, 2018
In this paper, we use a field lens and a holographic diffuser together to improve the printing efficiency of a holographic stereogram printing system based on the effective perspective images' segmentation and mosaicking method. The light rays' regulation function of the field lens and the modulation function of the holographic diffuser are analyzed ...
Jian, Su, Xingpeng, Yan, Yingqing, Huang, Xiaoyu, Jiang, Yibei, Chen, Teng, Zhang   +5 more
openaire   +2 more sources

Design and fabricate freeform holographic optical elements on curved optical surfaces using holographic printing

Optics Letters, 2023
Freeform holographic optical elements (HOEs), due to the high degrees of design freedom, can be used to enhance performance of display systems. In this Letter, we propose a method for designing and fabricating freeform HOEs on curved optical surfaces that can be utilized to implement curved augmented reality (AR) displays.
Tian Shu, Chunyang Pei, Rengmao Wu, Haifeng Li, Xu Liu   +4 more
openaire   +2 more sources

Hologram printing for next-generation holographic display

Ultra-High-Definition Imaging Systems, 2018
In this paper, we introduce hologram printing technology. This technology includes the following technologies, computer-generated hologram, hologram printer, duplication, and application-depended technologies. When this technology is applied to static hologram, the media can present static 3D objects more clearly than traditional 3D technologies such ...
Kenji Yamamoto, Ryutaro Oi, Makoto Okui, Yasuyuki Ichihashi, Lode Jorissen, Koki Wakunami, Boaz Jessie Jackin   +6 more
openaire   +1 more source

Dual-Polarization Printed Holographic Multibeam Metasurface Antenna

IEEE Antennas and Wireless Propagation Letters, 2017
Multibeam antennas have emerged as a promising concept for applications where selective beam coverage is required. Multibeam radiation can be achieved leveraging the concept of metasurfaces, enabling the radiated wavefronts to be tailored in an all-electronic manner, making reconfigurable multibeam operation possible without the need for bulky feeding ...
Okan Yurduseven, David R. Smith
openaire   +1 more source

Holographic aspheric gratings printed with aberrant waves

Applied Optics, 1987
In astrophysics, holographic gratings use, as far as possible, spherical grating's surface and printing laser waves. However, to obtain high spectral resolution, aberrations must be corrected up to the fourth degree, which generally requires aspheric surfaces for the grating or the laser waves.
openaire   +2 more sources

3D color holographic imaging by wavefront printing

2015 11th Conference on Lasers and Electro-Optics Pacific Rim (CLEO-PR), 2015
Design and implementation of a holographic wavefron printer with demagnification of the object beam is presented The printer prints a white light viewable color analo; hologram from a set of computer generated hologram displayed on an amplitude spatial-light modulator.
Hoonjong Kang, Elena Stoykova, Youngmin Kim, Sunghee Hong, Joosup Park, Jisoo Hong   +5 more
openaire   +1 more source

A holographic image printing technique with high resolution

Optics Communications, 1973
Abstract A method is shown to obtain a real image with a large image field and high resolution from an image hologram, which is produced by a large aperture lens with large amount of aberration. The resolution of the reconstructed serial image is estimated to be within the range from 450 to 500 lines/mm in 2 inch diameter image field.
T. Suzuki, J. Tsujiuchi
openaire   +1 more source