18122013071108 3d holographic projection technology
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3D Holographic
Projection Technology
SANYA
RRR ROLL NO. -
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Contents What is Holograph
Why Holography Types of Hologram
How Holograms w
Recording of holo
Reconstruction of
Advances in tech
Applications & Fu
Conclusion
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What is holography
Holography is a technique that allows scattered from an object to be recorded reconstructed.
The technique to optically store, retrieve, andinformation.
Preserve the 3-D information of a holosubject
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Why
holographic
displayA high resolutio
dimensional record
object
Glasses free 3D displ
No need for projecti
Life like images
Interactive display
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Timeline of holography
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Types of
HologramsA. Reflex hologram
Illuminated by
white incande
source, from fron
The image con
reflected by the
Produces holograms, ma
optically indist
from the origina
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B.Transmission hologram
Viewed with laser lof the same typmake the recording
Need light source b
Virtual image can
sharp and deepC.Computer-generated ho No need for a real o Interference pa
calculated digita
algorithms
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Howholograms
workThe time-varying ligof a scene with all its properties is to be reand then regenerateHence the wor
holography is dividtwo phases:
Recording
Reconstruction
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Recordingof hologram Basic tools requ
make a hincludes a red
lenses, beam mirrors and holofilm
Holograms are rin darker environm
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Recording a hologram
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Laser : Red lasers, usually helium-neon (HeNe
common in holography. These are coherent ligh
Beam splitter: This is a device that uses mirrors a
split laser beam of light into two beams.
Object beam (directed onto the object) and
Reference beam (travels directly onto the
medium)
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Mirrors: These direct the beams of light to the
locations
Holographic film: Holographic film can record
a very high resolution, which is necessary for c
a hologram. It's a layer of light-sensitive com
on a transparent surface, like photograph
Eg: Silver Halide Emulsion
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Process
When the two laser beams reach the rec
medium, their light waves intersect and interfe
each other. It is this interference pattern
imprinted on the recording medium.
HologramRecording
HologramRecondtruction
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Reconstructionof hologram
The photographis illuminatedoriginal light sou
for recording ho
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Reconstructing a hologram
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Capturing ofholographic
video By replacingconventionalholographic p
a digital came
optoelectronic
screen, wecapture an
holographic vid
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Projection ofholographic
video Video hologram into light modulato
These light modulilluminated by
light beam souproject video
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Projection of multicolour holographicvideo
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Advances in
technology Touchable hologrTactile holog
display with feedback
Horizontal 360 vie
image on table toUser inte
integrated display
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Applications& Future scope
Educational applica
Marketing with 3D
display
3D simulation dscientific visualizatio
Improved virtual
augmented reality Telepresence a
conferencing
Entertainment displa
Military and Space
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Holographic c
for military, bsimulations
Intense real
rooms
In future all dis
televisions, mobdisplays,
displays will be
by holographic d
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Conclusion Holographic T
and Spectral Imaendless applicat
as the human
imagine
In future, h
displays will be all present dispsizes, from sm
screen to large p
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Thank you
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