&lt;title&gt;Instant holographic portrait printing system&lt;/title&gt;

Shirakura, Akira; Kihara, Nobuhiro; Baba, Shigeyuki

doi:10.1117/12.303662

Cited by 10 publications

(5 citation statements)

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“…In many cases after the Fourier lens an additional demagnification and filtering setup -usually a 4f lens arrangement -is used to control the Hogel size and suppress diffraction effects generated by the SLM and apertures in the system. This method is well established for holographic stereogram printing 4,5 , since for such elements only an easy to calculate 2D image as master file for the SLM is needed and all Hogels are identical.…”

Section: Phase Slm Vs Amplitude Slmmentioning

confidence: 99%

Diffractive optics in large sizes: computer-generated holograms (CGH) based on Bayfol HX photopolymer

et al. 2015

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Volume Holographic Optical Elements (vHOE) offer angular and spectral Bragg selectivity that can be tuned by film thickness and holographic recording conditions. With the option to integrate complex optical function in a very thin plastic layer formerly heavy refractive optics can be made thin and lightweight especially for large area applications like liquid crystal displays, projection screens or photovoltaic. Additionally their Bragg selectivity enables the integration of several completely separated optical functions in the same film. The new instant developing photopolymer film (Bayfol ® HX) paves the way towards new cost effective diffractive large optics, due to its easy holographic recording and environmental stability. A major bottleneck for large area applications has been the master hologram recording which traditionally needs expensive, large high precision optical equipment and high power laser with long coherence length. Further the recording setup needs to be rearranged for a change in optical design. In this paper we describe an alternative method for large area holographic master recording, using standard optics and low power lasers in combination with an x, y-translation stage. In this setup small sub-holograms generated by a phase only spatial light modulator (SLM) are recorded next to each other to generate a large size vHOE. The setup is flexible to generate various types of HOEs without the need of a change in the mechanical and optical construction by convenient SLM programming. One Application example and parameter studies for printed vHOEs based on Bayfol ® HX Photopolymer will be given.

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Section: Phase Slm Vs Amplitude Slmmentioning

confidence: 99%

Diffractive optics in large sizes: computer-generated holograms (CGH) based on Bayfol HX photopolymer

et al. 2015

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“…A large master vHOE can be recorded alternatively using only standard size and off the shelf optics and low power lasers, if they are combined with an x , y -translation stage [ 58 , 59 ]. Small sub-holograms (Hogels) are recorded and stitched next to each other to generate the large vHOE.…”

Section: How To Mass Produce Volume Holographic Optical Elements Wmentioning

confidence: 99%

The Chemistry and Physics of Bayfol® HX Film Holographic Photopolymer

2017

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Holographic photopolymers are a new technology to create passive diffractive optical elements by a pure laser interference recording. In this review, we explain the chemistry concepts of light harvesting in an interference pattern and the subsequent grating formation as chemical response. Using the example of the newly developed Bayfol ® HX film we discuss the reaction-diffusion driven photo-polymerization process for an index modulation formation to create volume phase gratings. Further we elucidate the selection of monomer chemistry and discuss details of the recording conditions based on the concept of exposure dosage and exposure time. Influences ranging from high dosage recording to low power recording are explained and how to affect the desired diffraction efficiency. Finally, we outline and demonstrate the process to mass manufacturing of volume phase gratings.

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“…The image presented above were generated by artificial computer graphics, but it is also expected to produce the holograms of pictured real objects. In HPO case, shooting images for HPO HS is not so difficult with using horizontal camera motion or horizontal camera array 4,13 . On the other hand, capturing full-parallax images requires much effort, and it has been difficult to make FP HS's of real objects.…”

Section: Full-parallax 3d Image Scanning For High-density Light-field...mentioning

confidence: 99%

Ray-based and wavefront-based holographic displays for high-density light-field reproduction

Yamaguchi

2011

SPIE Proceedings

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This paper introduces holographic 3D displays for ray-based and wavefront-based light-field reproductions. As a raybased display though a hard copy 3D image, a holographic 3D printer is introduced, which automatically outputs highresolution full-parallax holographic stereograms from 3D image data. Fine-quality full-color 3D images were experimentally obtained with excellent gloss and texture appearances. As a wavefront-based display, we have proposed a technique for calculating computer generated hologram, in which the wavefront is derived from the light-ray information. High-resolution display of deep 3D scene is possible, while realistic image can be generated by utilizing conventional rendering techniques for computer graphics.

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<title>Instant holographic portrait printing system</title>

Cited by 10 publications

References 0 publications

Diffractive optics in large sizes: computer-generated holograms (CGH) based on Bayfol HX photopolymer

Diffractive optics in large sizes: computer-generated holograms (CGH) based on Bayfol HX photopolymer

The Chemistry and Physics of Bayfol® HX Film Holographic Photopolymer

Ray-based and wavefront-based holographic displays for high-density light-field reproduction

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