Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 13 of 13 for “"Holographic displays"”.
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MEMS spatial light modulator for holographic displays
This thesis presents new approaches to building holographic displays. The approaches use a diffractive spatial light modulator (SLM) built using microelectromechanical system (MEMS) technology. Several related MEMS SLMs are reviewed. In particular, the capabilities of Silicon Light Machines' …
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Advanced Algorithmic Approaches for Improving Image Quality in 2D and 3D Holographic Displays
… scenes. Despite decades of concentrated effort, holographic 3D displays are still struggling to meet the demands required for a consumer-ready solution. This thesis addresses technical challenges in the practical implementation and focuses specifically on potential image quality improvements …
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An updatable three-dimensional display via direct optical fringe writing of computer - generated holographic stereograms in photorefractive polymer
… the direct fringe writing of computer-generated holographic gratings into a novel photorefractive polymer. The photorefractive polymer in question has been developed by Nitto Denko Technical Corporation and has many attractive properties for the 3-D display application, including long image …
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Optimisation of Phase-Only Computer-Generated Holograms
… Reality (AR) head sets are stereoscopic displays, which fail to provide a natural experience. These systems rely on artificial tricks to simulate depth, leading to discomfort and limited realism. Holography, by contrast, fully reconstructs the optical wavefront of 3D objects and generates …
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Advanced Computational Holography for Perceptual Enhancement and Application in HUDs
… aiming to enable more practical and feasible holographic displays for both 2D and 3D applications. It begins with an overview of holographic displays and their advantages. Based on the core components of a holographic display system, including the laser source, spatial light modulator (SLM), …
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Haptic holography : an early computational plastic
… In this work, we combine various holographic displays with a force feedback device to image free-standing material surfaces with programmatically prescribed behavior. We present three implementations, Touch, Lathe, and Poke, each named for the primitive functional affordance it …
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Improving the computation efficiency for computer-generated holography
Consumer-grade 3D displays are likely to become much more demanding over the next few years as the advancement of fabrication capability in the entire display technology industry. Computer-generated holography (CGH) based picture generation unit is a promising and viable technology. Unlike other …
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Performance Improvements for the Rasterization Pipeline
… multiple views which can be useful for holographic displays, and other multi-view displays. The second area of focus is on compression algorithms. Compression is frequently used in graphics hardware in order to minimize memory traffic and thereby increase performance. We present …
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All-Optically Addressed Spatial Light Modulator and Diffractive Optical Element Based on Photoalignment of Azobenzene Polymer
The advancement of true three-dimensional (3D) displays hinges on the development of diffractive optical engines with high information bandwidth. However, conventional optical engines such as liquid crystal on silicon (LCOS) spatial light modulators (SLMs) and optically addressed SLMs (OASLMs) face …
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Enhance of LCOS Phase Modulation in Visible Wavelength Range Based on Metasurface
… addressing key challenges in high-performance holographic displays. LCOS devices are known for their high-resolution light modulation, but their phase depth and response time are limited due to the proportional relationship between liquid crystal thickness and switching speed. To overcome this …
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Improving Image Quality in Holographic Projections through Novel Iterative Algorithmic Solutions
Holographic displays have always shown great promise, a legitimate solution to current two dimensional stereoscopic displays. Holography is capable of demonstrating fully three-dimensional images without a loss in resolution, however, its current drawbacks such as comparatively limited field of …
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Design and Application of Waveguide Holographic Optical Elements
… Compared to the traditional optical systems, a holographic optical element (HOE) has the properties: formation in thin, lightweight films that can be deposited on various substrates; high diffraction efficiency, high transparency, low scatter, the ability to multiplex multiple holograms in the …
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Optimal Constrained Feedback: Computer-Generated Holography using Optimal-Gains
Holographic displays are a unique technology; no other display technology is able to fully replicate the light pattern of a real-world object. However the CGH (computer-generated holography) problem, where the real-world limitations of the modulation devices mean that the complex wavefront of a …