holography technology for the future to lead in the market in the digital world. recent trends and it is attached with a video for good understanding. hope you will like the presentation
Size: 21.87 MB
Language: en
Added: Mar 15, 2016
Slides: 31 pages
Slide Content
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