29-12-2012, 03:04 PM
A Seminar Report On HOLOGRAM SYSTEM
[attachment=45795]
ABSTRACT
This new technology of Holographic Projections highlights the importance and need of this technology and how it represents the new wave in the future of technology and communications, the different application of the technology, the fields of life it will dramatically affect including business, education, telecommunication and healthcare.
The paper also discusses the future of holographic technology and how it will prevail in the coming years highlighting how it will also affect and reshape many other fields of life, technologies and businesses.
INTRODUCTION
WHAT IS HOLOGRAPHIC PROJECTION?
Holographic projection is the new wave of technology that will change how we view things in the new era. It will have tremendous effects on all fields of life including business, education, science, art and healthcare. To understand how a holographic projector works we need to know what a hologram is.
Holography is the method we use to record patterns of light. These patterns are reproduced as a three dimensional image called a hologram. While Hungarian physicist Dennis Gabor invented the hologram in 1947. Today’s new technology provides some outstanding advantages to not only everyday consumers but also large business corporations and
governments.
Three-dimensional holographic projection technology is loosely based on an illusionary technique called Peppers Ghost, and was first used in Victorian theatres across London in the 1860s. Pepper's Ghost was typically used to create ghostlike figures on stage. Hidden from the audience's view, an actor dressed in a ghostly costume would stand facing an angled plate of glass. The audience would be able to see the glass, but not the actor directly.
3D holographic projection is a rapidly growing technology. With every business desperately trying to get their product to stand out from the competitors, 3D hologram advertising and promotion is fast becoming an eye catching success. Thanks to the latest in HD projection and CGI technology, 3D holographic projection has transformed itself from its basic Victorian origins into a futuristic audio visual display used by the likes of Endemol (Big Brother), Coco-Cola and BMW.
Basic principles of holography
In essence, the problem Gabor conceived in his attempt to improve the electron microscope was the same as the one photographers have confronted in their search for three-dimensional realism in photography.
To achieve it, the light streaming from the source must itself be photographed. If the waves of this light, with their multitude of rapidly moving crests and troughs, can be frozen for an instant and photographed, the wave pattern can then be reconstructed and will exhibit the same three-dimensional character as the object from which the light is reflected.
Holography accomplishes such a reconstruction by recording the phase content as well as the amplitude content of the reflected light waves of a laser beam.
What is Hologram?
The word “holography” is invented from the Greek words “holos” means “whole” and “graphe” means “writing”. The term "hologram" was also invented from the Greek words holos means "whole," and gramma, means "message."
A hologram is a recording of an object by the method of holography by using light waves.Holograms are very interesting and remarkable subject which can not be explained but can be appreciated in visualization.
A hologram is a recording in a two- or three-dimensional medium of the interference pattern formed when a point source of light (the reference beam) of fixed wavelength encounters light of the same fixed wavelength arriving from an object (the object beam). When the hologram is illuminated by the reference beam alone, the diffraction pattern recreates the wave fronts of light from the original object. Thus, the viewer sees an image indistinguishable from the original object.
These are apparently floating three dimensional image has taken a good space in all over the world in developing ad under developed countries. People are carrying one or two holograms every time with them. They can be in their credit or debit cards, CD or DVDs.
Working of hologram
Recording of holographic image
The recording medium has to convert the original interference pattern into an optical element that modifies either the amplitude or the phase of an incident light beam in proportion to the intensity of the original light field.
Hologram illuminated by single beam laser. Beam identical to reference beam used during the formation of hologram.
The hologram acts as complex grating and diffracts the light. So direct direction of beam we get no information.
Laser beam pass through the hologram has only amplitude variation but no information about phase.
Film exposed simultaneously to reference beam and scattered beam.
Both beam belong to same laser wave fronts, the beam interference on the plate.
Obtain complicated interference pattern on the film.Film called hologram.
Hologram contain information not only about amplitude but also phase of the object.
[attachment=45795]
ABSTRACT
This new technology of Holographic Projections highlights the importance and need of this technology and how it represents the new wave in the future of technology and communications, the different application of the technology, the fields of life it will dramatically affect including business, education, telecommunication and healthcare.
The paper also discusses the future of holographic technology and how it will prevail in the coming years highlighting how it will also affect and reshape many other fields of life, technologies and businesses.
INTRODUCTION
WHAT IS HOLOGRAPHIC PROJECTION?
Holographic projection is the new wave of technology that will change how we view things in the new era. It will have tremendous effects on all fields of life including business, education, science, art and healthcare. To understand how a holographic projector works we need to know what a hologram is.
Holography is the method we use to record patterns of light. These patterns are reproduced as a three dimensional image called a hologram. While Hungarian physicist Dennis Gabor invented the hologram in 1947. Today’s new technology provides some outstanding advantages to not only everyday consumers but also large business corporations and
governments.
Three-dimensional holographic projection technology is loosely based on an illusionary technique called Peppers Ghost, and was first used in Victorian theatres across London in the 1860s. Pepper's Ghost was typically used to create ghostlike figures on stage. Hidden from the audience's view, an actor dressed in a ghostly costume would stand facing an angled plate of glass. The audience would be able to see the glass, but not the actor directly.
3D holographic projection is a rapidly growing technology. With every business desperately trying to get their product to stand out from the competitors, 3D hologram advertising and promotion is fast becoming an eye catching success. Thanks to the latest in HD projection and CGI technology, 3D holographic projection has transformed itself from its basic Victorian origins into a futuristic audio visual display used by the likes of Endemol (Big Brother), Coco-Cola and BMW.
Basic principles of holography
In essence, the problem Gabor conceived in his attempt to improve the electron microscope was the same as the one photographers have confronted in their search for three-dimensional realism in photography.
To achieve it, the light streaming from the source must itself be photographed. If the waves of this light, with their multitude of rapidly moving crests and troughs, can be frozen for an instant and photographed, the wave pattern can then be reconstructed and will exhibit the same three-dimensional character as the object from which the light is reflected.
Holography accomplishes such a reconstruction by recording the phase content as well as the amplitude content of the reflected light waves of a laser beam.
What is Hologram?
The word “holography” is invented from the Greek words “holos” means “whole” and “graphe” means “writing”. The term "hologram" was also invented from the Greek words holos means "whole," and gramma, means "message."
A hologram is a recording of an object by the method of holography by using light waves.Holograms are very interesting and remarkable subject which can not be explained but can be appreciated in visualization.
A hologram is a recording in a two- or three-dimensional medium of the interference pattern formed when a point source of light (the reference beam) of fixed wavelength encounters light of the same fixed wavelength arriving from an object (the object beam). When the hologram is illuminated by the reference beam alone, the diffraction pattern recreates the wave fronts of light from the original object. Thus, the viewer sees an image indistinguishable from the original object.
These are apparently floating three dimensional image has taken a good space in all over the world in developing ad under developed countries. People are carrying one or two holograms every time with them. They can be in their credit or debit cards, CD or DVDs.
Working of hologram
Recording of holographic image
The recording medium has to convert the original interference pattern into an optical element that modifies either the amplitude or the phase of an incident light beam in proportion to the intensity of the original light field.
Hologram illuminated by single beam laser. Beam identical to reference beam used during the formation of hologram.
The hologram acts as complex grating and diffracts the light. So direct direction of beam we get no information.
Laser beam pass through the hologram has only amplitude variation but no information about phase.
Film exposed simultaneously to reference beam and scattered beam.
Both beam belong to same laser wave fronts, the beam interference on the plate.
Obtain complicated interference pattern on the film.Film called hologram.
Hologram contain information not only about amplitude but also phase of the object.