A PowerPoint presentation consideration of the topic 3D Holographic projection Technology-based on interference fringes recorded on the Holographic plate. The Holographic projection Technology is a versatile topic for engineering or any graduate to be considered or study deep about can explore endless opportunities upcoming in the field of Holographic research or hologram.

1. 3D Holographic Projection
Technology & APPLICATIONS
SUBMITTED TO: MR. AMIT RAI
BY: SAFWAN SADI
ROLL: 1609721085 (EEE.B1)
GALGOTIAS COLLEGE OF ENGG. & TECH.
KNOWLWDGE PARK 2, GR. NOIDA, 201306
APRIL,2020

2. Contents  What is Holography
 Why Holography
 How Holograms work
 Components used.
 Recording of hologram
 Reconstruction of hologram
 Types of Holography
 Advances in technology
 Applications & Future scope
 Conclusion
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3. What is holography
 Holography is a technique that allows the light scattered from an object to be
recorded and later reconstructed.
 The technique to optically store, retrieve, and process information.
 Preserve the 3-D information of a holographed subject
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4. 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.
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5. Why holographic display
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 A high resolution three dimensional
recording of an object
 Glasses free 3D display
 No need for projection screen
 Life like images
 Interactive display

6. Timeline of holography
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7. How holograms work
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The time-varying light field of a scene with all
its physical properties is to be recorded and then
regenerated.
 Hence the working of holography is divided
into two phases:
•Recording
•Reconstruction

8. • Laser : Red lasers, usually helium-neon (HeNe) lasers, are
common in holography. These are coherent light source.
• Beam splitter: This is a device that uses mirrors and prisms to
split laser beam of light into two beams.
 Object beam (directed onto the object) and
 Reference beam (travels directly onto the recording
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Components used in recording of hologram

9. • Mirrors: These direct the beams of light to the correct
locations
• Holographic film: Holographic film can record light at a
very high resolution, which is necessary for creating a
hologram. It's a layer of light-sensitive compounds on a
transparent surface, like photographic film.
E.g.: Silver Halide Emulsion
Components used in recording of hologram
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10. Recording of hologram
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 Basic tools required to make a
hologram includes a red lasers,
lenses, beam splitter, mirrors and
holographic film.
 Holograms are recorded in darker
environment.

11. Process
 When the two laser beams reach the recording medium,
their light waves intersect and interfere with each other. It is
this interference pattern that is imprinted on the recording
medium.
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Hologram
Recording
Hologram
Reconstruction

12. Recording of Hologram
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13. Reconstructing a hologram
 The photographic plate is illuminated
with original light source used for
recording holograms.
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14. Types of Holograms
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A. Reflex hologram
 Illuminated by a spot of white
incandescent light source, from
front-above
 The image consists of light
reflected by the hologram
 Produces multicolor holograms,
makes images optically
indistinguishable from the original
objects

15. Holograms types
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B. Transmission hologram
 Viewed with laser light, usually of the
same type used to make the recording
 Need light source behind them
 Virtual image can be very sharp and
deep
C. Computer-generated holograms
 No need for a real object
 Interference pattern is calculated
digitally, using algorithms

16. Computer generated holography
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17. Capturing of holographic video
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 By replacing the conventional holographic
plate with a digital camera and an
optoelectronic 2D screen, we can capture
and display holographic video.

18. Projection of holographic video
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 Video hologram is coded into light
modulators
 These light modulators are illuminated by
coherent light beam source, to project video

19. Advance Hologram 19
 Touchable holograms
 Tactile holographic display with haptic
feedback
 Horizontal 360º view of a image on table top
 User interfacing integrated displays

20. Applications
& Future scope
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 Educational applications
 Marketing with 3D holographic display
 3D simulation displays for scientific
visualization
 Improved virtual Reality and augmented
reality
 Telepresence and video conferencing
 Entertainment displays
 Military and Space Applications

21. Application of hologram
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 Holographic checkpoint for military,
battlefield simulations
 Intense real gaming rooms
 In future all displays like televisions, mobile
phone displays, projector displays will be
replaced by holographic displays

22. Projected cost of Holographic system
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23. Conclusion
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 Holographic Technology and
Spectral Imagining has endless
applications, as far as the
human mind can imagine
 In future, holographic displays
will be replacing all present
displays in all sizes, from small
phone screen to large
projectors

24. • “Holographic Projection Technology: The World is Changing.”; Ahmed
Elmorshidy, Ph.D. JOURNAL OF TELECOMMUNICATIONS, VOLUME 2, ISSUE 2,
MAY 2010.
• “Capture, processing, and display of real-world 3D objects using digital
holography”; Thomas J. Naughton; 2010 IEEE Invited Paper
• “Touchable Holography”; Takayuki Hoshi; The University of Tokyo; 2009
• “Holographic 3-D Displays - Electro-holography within the Grasp of
Commercialization”; Stephan Reichelt, Ralf Haussler, Norbert Leister, Gerald
Futterer, Hagen Stolle and Armin Schwerdtner (2010)
• “How Holograms Work.”; Wilson, Tracy V. 2010.“ HowStuffWorks, Inc.
Downloaded <http://science.howstuffworks.com/hologram.html>
References 24

25. Thank you
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26. Query?
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SAFWAN SADI