This technical presentation provides an overview of holography, including its history, properties, working principles, and applications. Holography allows the recording and reconstruction of 3D images through the interference and diffraction of light. Key points covered include the timeline of holography's development, the different types of holograms (reflection and transmission), how holograms are recorded and reconstructed using lasers, and their current and future uses in areas such as medical imaging, entertainment, and virtual communication. The document concludes that holographic technology has many potential applications limited only by the human imagination.

1. RAJKIYA ENGINEERING COLLEGE
AMBEDKARNAGAR-224122
UNDER THE GUIDANCE OF: Mr. Rakesh Kumar
SUBMITTED TO: Mrs. Shashi Prabha Anan
SUBMITTED BY: Renuka Raj
A
TECHNICAL PRESENTATION
ON

2. •What is Holography?
•History.
•Hologram Properties.
•Working.
•Holographic Systems.
•Governing Principles.
•Applications.
•Projected Cost.
•Conclusion.
•References.
AGENDA

3.  Holography (from the
Greek, whole + write) is
the science of producing
holograms.
 It is an advanced form of
photography that allows an
image to be recorded in
three dimensions.
 The technique of
holography can also be
used to optically store,
retrieve, and process
information.
WHAT IS HOLOGRAPHY?

4. TIMELINE OF HOLOGRAPHY

5. If you look at these holograms from different angles, you see
objects from different perspectives, just like you would if you
were looking at a real object.
They usually just look like sparkly pictures or smears of color.
If you cut one in half, each half contains whole views of the entire
holographic image.
HOLOGRAPHIC PROPERTIES

6. 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.
TYPES OF HOLOGRAM

7. 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.
TYPES OF HOLOGRAM

8.  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
HOW HOLOGRAM WORKS?

9. Basic tools required
to make a hologram
includes a red lasers,
lenses, beam splitter,
mirrors and
holographic film
Holograms are
recorded in darker
environment
RECORDING A HOLOGRAM

10. RECORDING A HOLOGRAM

11. The photographic plate is illuminated with original
light source used for recording holograms.
RECONSTRUCTION OF HOLOGRAM

12. RECONSTRUCTING A HOLOGRAM

13. Video hologram is coded into light modulators.
These light modulators are illuminated by coherent light beam
source, to project video.
PROJECTION OF HOLOGRAPHIC VIDEO

14. Interference and Diffraction serve as primary principles.
Record
Reconstruct
GOVERNING PRINCIPLES

15. Medical studio
Filming of Real people
Special effects
TV image projection
Cell phone deployment
Virtual Communication
Simulation & Planning
Teaching & Training
Entertainment
APPLICATIONS & FUTURE SCOPE

16. PROJECTED COST

17. Holographic Technology 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.
CONCLUSION

18. REFERENCES
Ahmed Elmorshidy, Ph.D. Holographic Projection
Technology: The World is Changing . Journal Of
Telecommunications, Volume 2, Issue 2, May 2010.
http://holonet.khm.de/visual_alchemy/holo_hist.html
http://www.holophile.com/history.htm
http://www.jfairstein.com/hololinks.html
Websites: http://www.holonet.khm