holography


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hol·og·ra·phy

(hol-og'ră-fē),
The process of creating a hologram.

holography

/hol·og·ra·phy/ (hōl-og´rah-fe) the lensless recording of three-dimensional images on film by means of laser beams.

hol·og·ra·phy

(hol-og'ră-fē)
The process of creating a hologram.

holography

A technique for obtaining a stereoscopic image of an object without the use of lenses. It consists of recording on a photographic plate the pattern of interference between coherent light reflected from the object and light that comes directly from the same source (or is reflected from a mirror). The coherent light is usually provided by a laser. The photographic recording on the plate (called a hologram) when illuminated with coherent light yields an image that is identical in amplitude and phase distribution with the original wave from the object. It thus provides a three-dimensional image of the object in the sense that the observer's eyes must refocus to examine foreground and background and indeed 'look around' objects by simply moving the head laterally.
References in periodicals archive ?
In addition to papers on the latest in holography, delegates will be interested to hear about competing or disruptive technologies and how these are or might impact the markets for holograms and holographic products.
This report is based on an extensive research study of the digital holography market and aims to identify the entire market and all its subsegments through extensively detailed classifications.
The researchers turned to holography after exploring other options, including laser deflectors and digital displays used in many portable projectors to stimulate these cells.
I've been in holography for 24 years and done everything from A to Z," says CEO John Dixon, a graphic artist by training.
Unlike the scanning tunneling microscope, a widely used tool for tracing a surface's atomic bumps and hollows, photoelectron holography offers the possibility of not only showing atomic locations but also identifying the atoms.
Proceedings were officially opened by Dr Mark Deakes, Conference Director and General Secretary of the IHMA, and the conference this year was configured into six sessions, covering innovation in origination, materials and production, 70 years of holography, applications of surface relief structures and holography, and two sessions on securing documents and brands.
The key step preventing X-ray holography from being a useful technique was the inability to record the hologram,' says Howells, "and now we've accomplished that step with the undulator and resist.
As readers of Holography News[R] cannot have failed to notice, 2017 marks the 70th anniversary of the invention of the hologram.
Resch at Toulon University in La Garde, France, and colleagues describe a method using holography to examine the behavior and creation of film drops when the film cap of a bubble fragments.