Television (TV) technology constantly evolved throughout the 20th century, but today we are on the verge of a new era in home entertainment. The era of holographic television is perhaps only several years away, but these 3-D devices may not be affordable for a little longer than that.
Holography History
The original form of holography was discovered in 1947 by a Hungarian physicist named Dennis Gabor, who invented the technique for electron microscope applications on electron waves. Modern holography uses this technique on light waves instead to form 3-D images, but this was possible only after the discovery of the laser in 1960.
Theory
The object to be recorded is illuminated by two laser beams at different angles that cause an interference pattern, and a high-resolution photographic plate is exposed to the interference pattern. When that holographic image is later hit with the same laser beam that recorded the image, a 3-D image of the object recorded is reproduced.
Cheoptics360
A Danish team of engineers and designers created the Cheoptics360, which is a pyramidal holographic display that recreates video and computer images both indoors and outdoors. The images are created using a system of mirrors within the pyramid.
Claro Holographic TV
The Claro holographic TV utilizes a new form of holographic film over the transparent screen to create very sharp images even in bright light. The Claro actually has a projector about 5 feet behind it. So it has small parts but takes up a lot of space.
Actuality Systems Perspecta
Actuality Systems Inc.'s Perspecta holographic display looks somewhat like a crystal ball and displays incredibly detailed images used for pharmaceutical and medical imaging. Goggles are not needed, and the eight-color image can be seen perfectly from any angle.
Tags: Actuality Systems, Actuality Systems Perspecta, holographic display, interference pattern, object recorded, Systems Perspecta
