Holography

EVOLUTION OF DISPLAYS

INTRODUCTION TO HOLOGRAPHY• Holography is composed of the Greek terms, "holos" for "whole view" and

“gram” for "writing or drawing“

• Technical term for holography is wave front reconstruction

• Image changes as the position and orientation of the viewing system changes

• Records phase of the object

• Record our three dimensional world on a two dimensional recording medium

• Can be seen using naked eyes

• Demonstrates complete parallax and depth-of-field

• Image floats in free space

• Can also be used to optically store, retrieve, and process

information

INTRODUCTION TO HOLOGRAPHY (cont)

• Dennis Gabor - discovered the basic technology of holography in 1947• Optical holography did not really advance until the development of the laser in 1960• First practical optical holograms that recorded 3D objects to be made in 1962

• Yuri Denisyuk from Soviet Union• Emmett Leith and Juris Upatnicks from USA

• Advanced notably since the 1980s owing to low-cost solid-state lasers

HISTORY OF HOLOGRAPHY

TIMELINE OF HOLOGRAPHY

• TIMELINE OF HOLOGRAPHY• Requires a laser as the light source• Image is captured as interference pattern• Working of holography is divided into two phases:

• Recording• Reconstruction

WORKING OF HOLOGRAPHY

Produce monochromatic light

• Laser • Usually helium-neon (HeNe) lasers are used

• Beam splitter• Device that uses mirrors and prisms to split laser beam into

two beams• Object beam • Reference beam

• Mirrors• Direct the beams of light to the correct locations

• Holographic film• Can record light at a very high resolution• Layer of light-sensitive compounds on a transparent surface

( Silver Halide Photographic Emulsion )

COMPONENTS REQUIRED

RECORDING A HOLOGRAM

A Hologram is the result of interference occurring between two waves, an object beam which is the light scattered off the object & a coherent background, the reference beam, which is the light scattered off the object & a coherent background, the reference beam , which is the light reaching the photographic plate directly.

Holography is a two-step process.

First step is the recording of hologram where the object is

transformed into a

photographic record.

The second step is the

reconstruction in which the hologram is transformed

into the image.

RECORDING A HOLOGRAM(cont)

RECORDING A HOLOGRAM(cont)

A SUCCESSFUL HOLOGRAM USING HELIUM NEON LASER

IMPORTANCE AND NEED OF 3D HOLOGRAPHIC PROJECTION

• Rapidly growing technology• Project large-scale, high-resolution images onto free space• Accommodate multiple viewers independently and simultaneously• Create tremendous effects on all fields of life including business, education, science, art and healthcare• Enabling viewing and manipulation of virtual 3D objects in 3D space without the need for special viewing goggles or headgear

PROJECTED COST OF 3D HOLOGRAPHIC PROJECTION

COMPUTER AND HOLOGRAPHY

• Latest and vary unique Hi Definition 3D Projection Technology

• Image is captured in 3 dimensional Aspect with a Special Hi Definition

Camera on a specially built stage

• Projected at various Distant Locations

• Without wearing any kind of 3D glasses

WORKING OF 3D HOLOGRAPHIC PROJECTION

• A video projector, preferably DLP with an HD card/minimum native resolution of 1280 x 1024 and brightness of 5000+ lumens• A hard-disc player with 1920 x 1080i HD graphics card, Apple or PC video server, DVD player• A Musion® Eyeliner™ Foil(1/8" thick Acrylic version) and a stage set• Lighting and audio as required • Subjects are filmed in HDTV and broadcast on to the foil through HDTV projection systems, driven by HD Mpeg2 digital hard disc players, or uncompressed full HDTV video

DISPLAY SETUP

• A high resolution three dimensional images

• Glasses free 3D display

• No need for projection screen

• Life like images

• Interactive display

ADVANTAGES

“Real world applications are endless”• Live stage shows• Advertising• Gaming• Education• Entertainment• Training• Medical• Communication• Military and Space Applications

APPLICATIONS

Live stage performance

Advertising

Gaming

Education

Entertainment

Training

Medical applications

communication

Military and space