Results 141 to 150 of about 1,305 (184)
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Holographic stereogram printing under the non-vibration environment
SPIE Proceedings, 2014Printing the holographic stereogram (HS) is vulnerable to the vibration when the holographic film is exposed to the continuous wave laser beam compared to the pulsed laser. The continuous wave laser is required to be more longer exposed to the holographic film for forming the fringe pattern, hence the optical system is normally set up on the ...
Bongho Lee +4 more
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Digital holographic printing using pulsed RGB lasers
Optical Engineering, 2011A one-step digital holographic printing system based on RGB pulsed-laser technology is described. The system is capable of writing full-color composite digital reflection holograms and composite digital holographic optical elements up to a size of 1.0 m×1.5 m at hogel sizes ranging from 0.4 to 2 mm. We also show how the same pulsed-laser technology may
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Multiplane Holographic Display by 3D‐Printed Metasurface
Advanced Optical MaterialsAbstract Meta‐optics represents a revolutionary advance in science and technology, enabling miniaturized and multifunctional optical systems through unprecedented subwavelength‐level light control. Nanofabrication techniques such as electron beam and UV lithography are difficult to fabricate complex structures, but two‐photon ...
Qiang Jiang +6 more
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Holographic beam shaping for volumetric 3D printing
Advanced Fabrication Technologies for Micro/Nano Optics and Photonics XVIILight-based technologies for 3D printing have recently been developed and are leading the field thanks to their unmatched performance. However, these techniques are still limited to using incoherent light patterning for printing. Here, we present a novel approach that allows us to print using coherent patterns by combining light-beam shaping and ...
Castaño, Maria Isabel Alvarez +3 more
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Printed Circuit Board Evaluation by Holographic Interferometry
Review of Scientific Instruments, 1972Application of real time holographic interferometry for the examination of a printed circuit board is described. The procedures and the resulting holographic interferograms of two specific studies are presented: (1) The heat conduction of a spacer used for mounting transistors on a heat sink, and (2) the detection of inner layer short circuits on a ...
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Color Holographic Wavefront Printing Technique for Realistic Representation
IEEE Transactions on Industrial Informatics, 2016This paper presents design and implementation of a color wavefront holographic printer. The printer output is a white light viewable volume hologram composed as a two-dimensional (2-D) array of elemental holograms. The three-dimensional (3-D) input data for the printer are encoded as computer generated holograms (CGHs) displayed in succession on an ...
Hoonjong Kang +5 more
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Printing Of Holographic Stereogram Using Liquid-Crystal TV
SPIE Proceedings, 1989Multiplrex Holograms are printed by using a liquid-crystal television receiver as a spatial light modulator instead of silver-halide movie film. Reconstructed 3-D images of wire-frame model can be observed with high contrast. But, some noise which is caused by LCTV is also observed.
Toshio Honda +5 more
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Progress in the printing techniques of the holographic stereogram
SPIE Proceedings, 2015Holographic stereogram display technology is one of the research focuses in three-dimensional (3D) holographic display. Holographic stereogram is essentially to infinitely approach the true 3D object using a sequence of 2D perspective images. In this paper, several holographic printing methods are summarized firstly, including two-steps transfer ...
Xiaoyu Jiang +4 more
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Hybrid Sensors Fabricated by Inkjet Printing and Holographic Patterning
Chemistry of Materials, 2015Inkjet printing and patterning strategies have been developed for fabrication of hybrid holographic sensors using zeolite nanocrystals on glass-supported photopolymers. The flexibility of the proposed techniques was demonstrated by fabrication and characterization of two types of holographic sensors.
Naydenova, Izabela +7 more
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Practical design for holographic head-mounted display system using holographic printing technology
Practical Holography XXXVII: Displays, Materials, and Applications, 2023Leehwan Hwang +3 more
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