Ultra-Realistic Imaging

Bjelkhagen, Hans I.; Brotherton-Ratcliffe, David

doi:10.1201/b14060

Cited by 38 publications

(29 citation statements)

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“…Uncertainties around the recording duration, the material behavior and the possible replication methods have to be investigated to validate a potential commercial interest to the concept. However, the impressive achievements of commercially feasible terabit-scale hologram storage and hologram printers imply a technical maturity which should be applicable to our approach [13,14].…”

Section: Recording Setupmentioning

confidence: 99%

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See-through holographic retinal projection display concept

Martinez

Krotov

Meynard

et al. 2018

Optica

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The field of near-eye see-through devices has recently received significant media attention and financial investment. However, devices demonstrated to date suffer from significant practical limitations resulting from the conventional optics on which they are based. Potential manufacturers seek to surpass these limitations using novel optical schemes. In this paper, we propose such a potentially disruptive optical technology that may be used for this application. Conceptually, our optical scheme is situated at the interface of geometric incoherent refractive imaging and radiative coherent diffractive imaging. The generation of an image occurs as a result of data transmission through a two-dimensional network of optical waveguides that addresses a distribution of switchable holographic elements. The device acts as a wavefront generator and the eye is the only optical system in which the image is formed. In the following we describe the device concept and characteristics, as well as the results of initial simulations.

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Section: Recording Setupmentioning

confidence: 99%

“…The efficiency of the holographic elements will depends on the photopolymer material and on the multiplexing strategy. Current performance for photopolymer holographic material shows diffraction efficiency that can reach 98% [14].…”

Section: Power Considerationsmentioning

confidence: 99%

See-through holographic retinal projection display concept

Martinez

Krotov

Meynard

et al. 2018

Optica

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“…The concept was advanced 40 years ago in [42] by generating a holographic stereogram (HS). High quality of large format HSs as a ray-based display, especially those printed by HS printers, are well known [43]. The input data for HS imaging are composed from colour and directional information.…”

Section: Methods For Computer Generation Of Holographic Fringe Patternsmentioning

confidence: 99%

“…The object beam encoded in the CGH was extracted by spatial filtering and demagnified using a telecentric lens system. Unlike the HS printers [43], the wavefront printer uses full holographic data. That is why the synthesis of a large number of elemental holograms, e.g.…”

Section: Holographic Materials and Optical Systemsmentioning

confidence: 99%

3D Capture and 3D Contents Generation for Holographic Imaging

Stoykova¹,

Kang²,

Kim³

et al. 2017

Holographic Materials and Optical Systems

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The intrinsic properties of holograms make 3D holographic imaging the best candidate for a 3D display. The holographic display is an autostereoscopic display which provides highly realistic images with unique perspective for an arbitrary number of viewers, motion parallax both vertically and horizontally, and focusing at different depths. The 3D content generation for this display is carried out by means of digital holography. Digital holography implements the classic holographic principle as a two-step process of wavefront capture in the form of a 2D interference pattern and wavefront reconstruction by applying numerically or optically a reference wave. The chapter follows the two main tendencies in forming the 3D holographic content-direct feeding of optically recorded digital holograms to a holographic display and computer generation of interference fringes from directional, depth and colour information about the 3D objects. The focus is set on important issues that comprise encoding of 3D information for holographic imaging starting from conversion of optically captured holographic data to the display data format, going through different approaches for forming the content for computer generation of holograms from coherently or incoherently captured 3D data and finishing with methods for the accelerated computing of these holograms.

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“…These holographic cells have also been described as a holographic element, a hogel 6 , or a holopixel 7 . During the print process each hogel is exposed with a laser through an LCD mask encoding the directional information and intensity of the light in the pre-calculated model of the 3D image to be produced onto the holographic medium.…”

Section: Synthetic Display Hologramsmentioning

confidence: 99%