In order to further understand the mechanism of volume hologram formation in photosensitive polymers, light-induced material response is analyzed in commonly used epoxy-based negative photoresist Epon SU-8. For this purpose, time-resolved investigation of volume holographic grating growth is performed in the SU-8 based host–guest system and in the pure SU-8 material, respectively. The compariso...

Recently, we tested the vision of spectacle corrected subjects using a special hologram (http://dx.doi.org/10.1364/BOE.3.001173). A subject viewing through this hologram sees the images of various numbers at different distances from the eye. Each of these images subtends an angle of 50' at the eye. Each image corresponds to a different amount of divergence or convergence at the eye. The limit o...

The development of digital holography is anticipated for the viewing of 3D images by reconstructing both the amplitude and phase information of the object. Compared to analog holograms written by a laser interference, digital hologram technology has the potential to realize a moving 3D image using a spatial light modulator. However, to ensure a high-resolution 3D image with a large viewing angl...

In a digital hologram, 3D information of an object is recorded on a holographic fringe pattern obtained from the interference pattern between the object and reference waves, or the numerical diffraction equations. Numerical equation-based hologram generation is highly computationally complex because the relationship between a point of the object and all the positions on a fringe pattern need to...

A high-gain screen can be made as a sandwich of a hologram and a retroreflective screen material. When a hologram is used in front of the screen instead of the screen material alone, the position of high-brightness viewing can be moved to any desired angle rather than being directed back along the projection beam.

This paper describes a rendering pipeline for digital hologram synthesis. The pipeline is capable of handling triangle meshes, directional light sources, texture coordinates and advanced illumination models. Due to the huge computational requirements of hologram synthesis only the HPO holograms are considered.

Active studies on holography, which is the ideal and final goal of 3-dimensional (3D) image display, have been undertaken mainly in the US, Europe, and Japan. In particular, real-time holographic video is the core technology for the next-generation 3D television (TV). The computer-generated hologram (CGH) was proposed by Brown and Lohmann [1] in 1966. It obtains an interference pattern through ...

The light field is a 4D recording that includes the positional and directional information for incoming rays of an image. A hologram is a recording that reconstructs the complex wavefront of an image to include parallex and depth cues. We relate these two concepts using the Wigner distribution, and attempt to recreate a light field recorded scene using a phase only hologram.

We present a new method to numerically reconstruct images on a tilted plane by digital holography in Fourier configuration. The proposed technique is based on a quadratic deformation of spatial coordinates of the digital hologram. By this approach we demonstrate that it is possible to recover the extended focus image (EFI) of a tilted object in a single reconstruction step from the deformed hol...