Successfully reported this slideshow.
We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. You can change your ad preferences anytime.

Three-dimensional Holographic Projection Technology PPT | 2018

1,318 views

Published on

3D holographic projection technology clearly has a big future ahead. 3D Holographic projection is the new wave of technology that will change how we see things in the modern era. Three-dimensional holographic projection technology will have tremendous effects on all fields of life including business, education, science, art, and healthcare.

Published in: Technology
  • Be the first to comment

Three-dimensional Holographic Projection Technology PPT | 2018

  1. 1. 3D HOLOGRAPHIC PROJECTION Introduction and Applications
  2. 2. HOLOGRAM • To understand how a holographic projector works we need to know what a hologram is. • Holography is a photographic technique that records the light scattered from an object, and then presents it in a way that appears three- dimensional. • The word holography comes from the Greek words ὅλος (holos; "whole") and γραφή (graphē; "writing" or "drawing").
  3. 3. HOLOGRAM - HISTORY • Hungarian-British physicist Dennis Gabor invented the hologram in 1947. • He was awarded the Nobel Prize in Physics in 1971 "for his invention and development of the holographic method". • Originally, used in electron microscopy, where it is known as electron holography. • The development of the laser enabled the first practical optical holograms that recorded 3D objects to be made in 1962 by Yuri Denisyuk in the Soviet Union and by Emmett Leith and Juris Upatnieks at the University of Michigan, USA. Dennis Gabor
  4. 4. THREE-DIMENSIONAL HOLOGRAPHIC PROJECTION TECHNOLOGY 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.
  5. 5. CATEGORIES OF HOLOGRAPHY Category Interference fringe Recording of interference fringes Reconstruction Holography optical interference DCG or PDLC Interference has been recorded as the photosensitive material hologram. Digital Holography optical interference CCD or CMOS Spatial Light Modulator Computer Generated Holography phase calculation with computer Lithography or etching Diffractive optical element after lithography or etching Spatial Light Modulator In recent years, the development of holography gradually toward to digital holography and computer generated holography.
  6. 6. OPTICAL HOLOGRAPHY
  7. 7. DIGITAL HOLOGRAPHY FIGURE 1 • Digital off-axis holography uses a CCD array to record a digital hologram where the reference beam interferes with the object beam. • The data are transmitted to a computer and analyzed. FIGURE 2 • A digital hologram is recorded on a CCD array, and the data are processed on a computer to create a digital 3D model in the computer. • That model is then displayed on the screen, shown as if in three dimensions.
  8. 8. COMPUTER GENERATED HOLOGRAPHY Camera LSLM SF Laser Density Filter Polarization Filter IrisLensPC Lens Lens Lens Mirror Screen
  9. 9. • The double parabolic projection system is composed of double parabolic mirrors. • The full-color computer-generated hologram is a real image, which could be remade a virtual image through the double parabolic projection system. • The image magnification appears to be 1.2 • The horizontal viewing angle appears 360° and the vertical viewing angle 15-75°. A DOUBLE PARABOLIC MIRROR PROJECTION SYSTEM
  10. 10. A DOUBLE PARABOLIC MIRROR PROJECTION SYSTEM
  11. 11. Virtual image projection of full-color CGHs Color coordinate analysis of white-light CGH image reconstructionResearch Paper
  12. 12. PYRAMID-TYPE FLOATING PROJECTION SYSTEM • Four image display surfaces could be used for presenting distinct information and switch the angle of view for the 360 degree viewing. • The 3D perception of dynamic floating images could be reinforced by the pyramid structure. • The matching of algorithms and optical mechanisms developed could present various colors on different display surfaces. • Large-size holographic image (surround splice).
  13. 13. Schematic of the design of 360- degree tabletop electronic holographic display, the design concept of which allows several persons to enjoy the hologram contents simultaneously. Credit: Yongjun Lim, of the 5G Giga Communication Research Laboratory, Electronics and Telecommunications Research Institute, South Korea
  14. 14. APPLICATIONS OF 3D HOLOGRAPHIC PROJECTION
  15. 15. Marketing with 3D holographic display 3D Holography in education
  16. 16. In Medical Diagnostics In Entertainment Industry
  17. 17. 3D presentations for conference rooms and meetings Home Entertainment
  18. 18. Virtual Reality, Augmented reality and Telepresence
  19. 19. Military Operations Engineering Designs
  20. 20. CONCLUSION 3D 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. Holographic Technology and Spectral Imagining has endless applications, as far as the human mind can imagine.
  21. 21. REFERENCES • https://phys.org/news/2016-10-full-circle-viewing-degree-electronic- holographic.html • https://www.computerworld.com/article/3249605/virtual-reality/the-future- of-3d-holograms-comes-into-focus.html • https://www.nature.com/articles/srep11750 • https://www.researchgate.net/publication/286763143_Full-color_and_less- speckled_modified_Gerchberg-Saxton_algorithm_computer- generated_hologram_floating_in_a_dual-parabolic_projection_system

×