The document discusses hologram technology, defining holograms as physical structures that diffract light into images and detailing the science of holography. It covers the history, working processes, classifications, and applications of holograms, highlighting their differences from photography. Holograms have potential in various fields including art, data storage, and security, and are depicted in fiction as transformative technology.

1. HOLOGRAM TEACHNOLOGY
SUBMITTED BY:
RAGULRAJKUMAR S
951518104046

2. CONTENTS
• Introduction
• History
• Working and Process
• Holography vs Photography
• Hologram Classification
• Applications
• Holography in Fiction

3. WHAT IS HOLOGRAM
A hologram is a physical structure that diffracts light
into an image. The term ‘hologram’ can refers to both
the encoded material and the resulting image.

4. HOLOGRAPHY
Science of producing holograms.
Enables 3-D images (hologram) to be made.
The image changes as the positon of the orientation
of the viewing system changes in exactly the same
way as if the object were still present , thus making
the image appear in Three-Dimensional.

5. HISTORY
Dennis Gabor-Father of holography
and holographic Technologies.
Used in Electron microscopy earlier.
Also known as Electron holography.
Optical holography is not advanced
until the development of Laser in
1960.
In 1961 the first 3D object recorded
by the laser . That’s the first
practical optical hologram .

6. WORKIN
G
Enables a light field to be recorded and later
reconstructed when the original light field is no longer
present, due to the absence of the original object.
Can be thought of as somewhat similar to Sound
Recording, whereby a sound field is encoded in such a way
that it can be reproduced later , without the presence of
the original vibrating matter.

8. PROCESS
It is the interference pattern that is imprinted on the
recording medium.
The interference can be consider as the encoded version of
the scene/object.
This missing key is provided later by shining laser, identical
to the one used to record the hologram, onto the developed
film.
 When this beam illuminates the hologram, it is diffracted by
the hologram’s surface pattern. This produces a light field
which is similar to the one originally produced by the
scene/object and scattered onto the hologram.
The image produces an effect in a person’s retina is called

10. HOLOGRAPHY VS
PHOTOGRAPHY
Holography and Photography have three things in common:
• They use light energy,
• They employ a light-sensitive surface,
• And the result is visible image.
Differences from Ordinary Photography:
A hologram can be viewed from a range of different angles ,
as if it were still present. But a photograph can be viewed
from one direction.
A photograph can be recorded by a normal light sources ,
but for hologram laser is required to record the object.

11. When a hologram is cut in multiple pieces, the
whole scene/object can still be seen in each
pieces. But for a photograph it’s not possible.
The reproduced viewing range of a hologram
adds many more depth perception cues that
were present in the original scene/object. But a
photograph lacks in depth perception.

12. Working of
Camera
Working of Hologram

13. HOLOGRAM
CLASSIFICATION
Reflection Holograms
Volume hologram
Transmission Holograms
Rainbow Holograms
Multi-image Holograms
Holographic Stereograms
Holographic movies

14. APPLICATION
S
• Art
• Data Storage
• Dynamic Holography
• Holographic interferometry
• Interferometric microscopy
• Sensors and Bisensors
• Security

15. HOLOGRAPHY IN
FICTION
Often used as plot device in Science fiction.
• In science fiction books
• Live-action films
• Live-action television series
• Cartoon films
• Video games

16. CONCULSION
3-Dimensional Holographic projections 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 human mind can imagine.