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.

1. 3D HOLOGRAPHIC
PROJECTION
Introduction and Applications

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. 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. 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. 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. OPTICAL HOLOGRAPHY

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. COMPUTER GENERATED HOLOGRAPHY
Camera
LSLM
SF
Laser
Density Filter
Polarization Filter
IrisLensPC
Lens
Lens
Lens
Mirror
Screen

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. A DOUBLE PARABOLIC MIRROR
PROJECTION SYSTEM

11. Virtual image projection of full-color CGHs
Color coordinate analysis of white-light
CGH image reconstructionResearch Paper

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. 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. APPLICATIONS OF 3D
HOLOGRAPHIC PROJECTION

15. Marketing with 3D holographic display 3D Holography in education

16. In Medical Diagnostics In Entertainment Industry

17. 3D presentations for conference
rooms and meetings
Home Entertainment

18. Virtual Reality, Augmented reality and Telepresence

19. Military Operations Engineering Designs

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. 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