For B.Tech Seminar

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