What is Holography?
About Universal Hologram Universal Hologram is the web name for Cherry Optical Holography. Cherry Optical Holography makes some of the finest art and display holograms in the World. We design, sell and exhibit holograms around the World. What We Do: At Cherry Optical Holography, we typically record on high resolution silver halide film and glass plates. We welcome custom commissions for the creation of the finest in holographic art. Three-dimensional imagery, spacious and scientific diffraction effects, dazzling colors, space-within-space, and engineering specialties are all within our repertory of skills. What We Do Not Do: We do not make photoresist masters or embossed copies. We do not do mass production holography. Who We Are: Nancy Gorglione is an award-winning holographer committed to creating holographic artwork of the highest beauty, while consistently furthering the uses of technology as creative arts media. Greg Cherry is fond of “pushing” the holographic technology, so that
Holography represents a class of techniques which capture 3-D information about a scene as an interference pattern on or in an extremely high resolution 2-D film. When the film is developed and viewed under the right conditions (some require a laser for viewing while others can use a suitable white light source), the result is a recreation in every detail of the original including the ability to move your viewpoint and look around objects, proper hidden surface removal (solid objects appear solid), shadows and highlights, and so forth. In principle, the hologram is optically indistinguishable from the original. A normal photo of a hologram would look the same as a photo of the scene itself. However, in so far as the technology exists today, holography is NOT what is often depicted in Sci-Fi and other movies and TV shows. Some of this deficiency is due to fundamental principles of what holography is and how it works while much of it is due to the inadequacy of present technology: • The
• LIA: Description of Holography Technique • LIA: Basic Amateur Holography Setup • LIA: Complete Holography Kits for Education • LIA: Holography Using Cheap Diode Lasers • LIA: Monitoring the Wavelength Stability of a Laser Diode • LIA: Holographic Video Displays • LIA: Suitable Lasers for Holography • LIA: Holographic Information Resources • LIA: Laser Communications • LIA: Basic Description • LIA: Amateur Laser Communications • LIA: Early Laser Communications Experiment • LIA: Miscellaneous • LIA: Use of Laser to Identify Stars in the Sky to a Group
Holography is a technique which allows the recording and playback of true, three-dimensional images. The image is called a hologram. Unlike other 3-D “pictures”, holograms provide what is called “parallax”. Parallax allows the viewer to move back and forth, up and down, and see different perspectives — as if the object were actually there. Holography was invented by Dr. Dennis Gabor at the Imperial College of London. In 1971, Dr. Gabor received the Nobel Prize in physics for holography. Originally, Dr. Gabor’s hope was to improve the resolution of the scanning electron microscope. However, in the early 60’s, University of Michigan researchers Leith and Upatnieks created the first three-dimensional holographic images. Around this time, Yuri Dennisyuk of the former Soviet Union also began creating holograms that were viewable using ordinary white light. To this day, holography continues to provide the most accurate depiction of three-dimensional images in the world. Ask Another Question
Holography is the process or technique of making holograms, which are three-dimensional images. A hologram is produced by the interaction of two beams of laser light (light composed all of the same color, or wavelength), which have been split from a single beam by a mirror. One beam, called the object beam, lights up the subject of the hologram. These light waves are reflected onto a photographic plate. The other beam, called a reference beam, is reflected directly onto the plate itself. The two beams come together to create, on the plate, an “interference pattern.” After the plate is developed, a laser light is projected through this developed hologram at the same angle as the original reference beam, but from the opposite direction. The pattern scatters the light to create a projected, three-dimensional, ghostlike image of the original object. Hungarian-born scientist Dennis Gabor (1900-1979)…
