UA team create New Dimension in Holography

14 02 2008

University of Arizona optical scientists have broken a technological barrier by making three-dimensional holographic displays that can be erased and rewritten in a matter of minutes. A 3-D holographic image that can be updated and viewed without special glasses may soon find its way from a UA optics lab to operating rooms and battlefield command centers.

The holographic displays – which are viewed without special eyewear – are the first updatable three-dimensional displays with memory ever to be developed, making them ideal tools for medical, industrial and military applications that require “situational awareness.”

And what the entertainment and advertising industries could do with a lifelike image apparently appearing in thin air is anyone’s guess.
The unique component in this holographic system — a 4-inch-square glass-and-polymer display surface — is its ability to change, to be updated, rewritten, says Savas Tay, the lead scientist on this invention.
That holographic bird on your credit card can’t turn into something else every few minutes, but Tay’s display can take an image rendered in three dimensions — initially photographed or computer-generated — and display it on the display surface, followed by another and another.
The technology will be said. “Imagine that when you walk into the supermarket or department store, you could see a large, dynamic, three-dimensional product display,” he said. It would be an attention-grabber.
And no one yet knows where the advertising and entertainment industries will go with possible applications, Peyghambarian said. “Imagine that when you walk into the supermarket or department store, you could see a large, dynamic, three-dimensional product display,” he said.

“This is a new type of device, nothing like the tiny hologram of a dove on your credit card,” UA optical sciences professor Nasser Peyghambarian said. “The hologram on your credit card is printed permanently. You cannot erase the image and replace it with an entirely new three-dimensional picture.”

“Holography has been around for decades, but holographic displays are really one of the first practical applications of the technique,” UA optical scientist Savas Tay said.

Dynamic hologram displays could be made into devices that help surgeons track progress during lengthy and complex brain surgeries, show airline or fighter pilots any hazards within their entire surrounding airspace, or give emergency response teams nearly real-time views of fast-changing flood or traffic problems, for example.

And no one yet knows where the advertising and entertainment industries will go with possible applications, Peyghambarian

“Three-dimensional imaging techniques are already commonly used in medicine, for example, in MRI (Magnetic Resonance Imaging) or CAT scan (Computerized Axial Tomography) techniques,” Tay said. “However, the huge amount of data that is created in three dimensions is still being displayed on two-dimensional devices, either on a computer screen or on a piece of paper. A great amount of data is lost by displaying it this way. So I think when we develop larger, full-color 3D holograms, every hospital in the world will want one.”

http://www.eurekalert.org/pub_releases/2008-02/uoa-uo020508.php

CONTACTS:
Nasser Peyghambarian (520-621-4649; nnp@u.arizona.edu) Savas Tay (520-245-9722; savas.tay@gmail.com)
It updates 3-D images; may aid doctors
By Dan Sorenson
arizona daily star
Tucson, Arizona | Published: 02.11.2008
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Make Hologram in 60 seconds

12 02 2008

Very soon holograms will be made in less than a minute. University of Arizona optical scientists have broken a technological barrier by making three-dimensional holographic displays that can be erased and rewritten in a matter of minutes. The work, which started about two years ago, was done in collaboration with Nitto Denko Technical Corp. and was funded by the U.S. Air Force Office of Scientific Research.

The holographic displays - which are viewed without special eyewear - are the first updatable three-dimensional displays with memory ever to be developed, making them ideal tools for medical, industrial and military applications that require “situational awareness.”

According to the sources the technology will be helpful in medical science. “Three-dimensional imaging techniques are already commonly used in medicine, for example, in MRI (magnetic resonance imaging) or CT scan (computerized tomography) techniques,” Tay said. “However, the huge amount of data that is created in three dimensions is still being displayed on two-dimensional devices, either on a computer screen or on a piece of paper. A great amount of data is lost by displaying it this way. So I think when we develop larger, full-color 3-D holograms, every hospital in the world will want one.”
Sources : http://www.eurekalert.org/pub_releases/2008-02/uoa-uo020508.php
Contact: Lori Stiles
lstiles@email.arizona.edu
520-626-4402
University of Arizona
hologram.pdf



The New HoloProTM4 premier at ISE 2008

18 01 2008

holopro.jpg
Bergisch Gladbach, 16.01.2008 - Ten years after the first HoloProTM screen was developed and produced in Bergisch Gladbach, the time has now come for HoloProTM4. Pronova present their latest new HoloProTM4 at the Integrated Systems Europe Fair in Amsterdam. The new generation of holographic projection screens was created in the course of many years of research and development cooperation between pronova and the Cologne Technical College (Fachhochschule Köln). “The reduction of holographic optical elements to a diameter of 0.2 mm brings us into dimensions that are smaller than pixels on a computer monitor”, explains Martin Kischkoweit-Lopin, CEO of G+B pronova GmbH. The impressive result of this miniaturisation is an unprecedented richness of detail and a considerable improvement in colour neutrality, homogeneity and brilliance of projection quality. The number of HOEs was also exponentiated: in HoloProTM4, according to pronova, there are more than 200 times as many HOEs as in previous versions.

HoloPro™ is the patented solution for living projections on glass. HoloPro™ stands for “holographic projection screen“.

Sources: www.pronovagmbh.de



Holographic Versatile Disc (HVD)

16 01 2008

Definition
Holographic Versatile Disc (HVD) is an optical disc technology which would hold up to 3.9 terabytes (TB) of information. It employs a technique known as collinear holography, whereby two lasers, one red and one green, are collimated in a single beam. The green laser reads data encoded as laser interference fringes from a holographic layer near the top of the disc while the red laser is used as the reference beam and to read servo information from a regular CD-style aluminum layer near the bottom. Servo information is used to monitor the position of the read head over the disc, similar to the head, track, and sector information on a conventional hard disk drive. On a CD or DVD this servo information is interspersed amongst the data.
source: www.wikipedia.org



After AlGore Now Prince Charles appear as an hologram

12 01 2008

prince-charles.jpg
Prince Charles will appear as an “hologram” at the World Future Energy Summit in Abu Dhabi which starts on January 21. Former US Vice-President Al Gore used similar technology to appear as a hologram at Wembley Stadium at the beginning of the Live Earth concerts earlier this year.

Charles was heavily criticised in January when he and the Duchess of Cornwall flew to Philadelphia with 12 staff to pick up an award from Mr Gore honouring him as an environmentalist.That trip created 20 tons of carbon dioxide.

Determined to keep his environmental damage to a minimum, Charles will save the 15 tons of carbon that would have been generated by flying himself and his staff 7,000 miles to the World Future Energy Summit in Abu Dhabi.

Sources: http://www.dailymail.co.uk/pages/live/articles/news/news.html?in_article_id=502599&in_page_id=1770



Accurate holograms savings lives, money and time (Forbes Magazine)

31 07 2007

Zebra Imaging has developed a new technology, that allows holograms, large and small to be viewed from any angle without distortion. The technology is tested by U.S. military to strategize during the conflict in Iraq.
Source: http://www.zebraimaging.com/html/news.html



Holographic optical trapping

31 07 2007

Holographic optical tweezers use computer-generated holograms to create arbitrary three-dimensional configurations of single-beam optical traps useful for capturing, moving and transforming mesoscopic objects. Through a combination of beam-splitting, mode forming, and adaptive wavefront correction, holographic traps can exert precisely specified and characterized forces and torques on objects ranging in size from a few nanometers to hundreds of micrometers. Offering nanometer-scale spatial resolution and real-time reconfigurability, holographic optical traps provide unsurpassed access to the microscopic world and have found applications in fundamental research, manufacturing and materials processing.
Source: http://www.opticsexpress.org/abstract.cfm?id=78450



World as a Hologram

31 07 2007

Theoretical results about black holes suggest that the universe could be like a gigantic hologram.
An astonishing theory called the holographic principle holds that the universe is like a hologram: just as a trick of light allows a fully three-dimensional image to be recorded on a flat piece of film, our seemingly three-dimensional universe could be completely equivalent to alternative quantum fields and physical laws “painted” on a distant, vast surface.
source: http://sufizmveinsan.com/fizik/holographic.html



Reconnaissance International to Publish ‘Holography Bible’

21 07 2007

Reconnaissance International wiil be publishing “Directory of Holography Suppliers” this winter.

The guide will be the first of its kind for the rapidly changing industry, and is intended as the ultimate holography resource. Hologram manufacturers can be included in the listings free of charge if they submit their details before 15th September 2007.
The directory, which will be distributed free of charge at the annual Holo-pack•Holo-print conference in Hong Kong, will feature detailed listings of hologram manufacturers and suppliers with different categories to help divide up the vast array of holographic products, systems and technologies that make up the holography industry.
Source:http://www.emediawire.com/releases/2007/7/emw536965.htm



Holographic Data Storage

18 07 2007

Holographic storage delivers high capacity by recording data throughout the volume of the recording material, and not just on the surface. With each flash of the laser, a data page of approximately 1 million bits is recorded. Each data page is located at a unique address within the material and several hundred pages of data, each with their own unique address, are recorded in the same location of the medium. Each of these collections of data pages is then referred to as a “book.” This new recording technique enables more holograms to be stored in the same volume of material by overlapping not only pages, but also books of data. This dramatically increases the storage density.
source:http://www.embedded-computing.com/news/db/?7030