The document summarizes the history and techniques of 3D movies. It discusses early 3D movies from the 1920s using red-green anaglyph and polarized filters. Various 3D techniques are described such as anaglyph, polarization, eclipse method, interference filters, Pulfrich effect, spectral separation, and lenticular/barrier screens. Recent developments discussed include autostereoscopic screens without glasses and holographic displays.

2. History
• 1980: William Friese Greene obtained first
patent
• 1900: 3D camera by Frederic Eugene Ives
• 1915: Tests in Astor Theater, New York city by
Edwin S Porter and William E via Red-Green
anaglyph
• 1922: Earliest confirmed 3D movie “The
power of love” in Ambassador hotel theater
Los Angeles.

3. History
• 1922: Teleview system- alternate left right
images projected synchronized with arm rests
of seats.
• 1922: First Red-Blue anaglyph movie
• 1936: MGM presented Academy Award and
Best short Subject award winning movie
”Audioskopiks”

4. Techniques
• Anaglyph
• Polarization
• Eclipse Method
• Interference filter technology
• Pulfrich
• Spectral separation
• Lenticular or barrier screen

5. Anaglyph
• Earliest method
• Introduced in 1915
• Superimposing two images, one left eye
oriented (RED) another right eye (CYAN)
• Can be used in TV broadcasting easily
• Actual color is not recreated successfully

6. Polarization
• Polarized at 45 degree and 135 degree (90
degree difference)
• RealD glasses
• Circular polarization preferred over linear,
since viewer need not to align himself/herself
according to the image orientation
• 4K projector projects 2K images on screen

7. Polarization
• Metallic screen makes it effective (silver
screen), polarization not
destroyed, introduced by Thomson
Technicolor.
• It reduces overall image brightness and
contrast.

8. Eclipse
• LCD Shutter glasses are used
• Do not require silver screen
• Brightness and contrast maintained
• LCD valves the work by rotating the light
between two opposite polarizing filter
• Expensive glasses

9. Interference filter technology
• Different wavelength of RED CYAN BLUE for
each eye (Dolby 3D)
• Appropriate filters for each eye
• PANAVISION introduced 5 filter per eye ove r
Dolby 3D
• Claims to be cheaper than Dolby 3D and can
be viewed on almost all projectors and
screens unlike Dolby 3D

10. Pulfrich
• Based on human eye sensitivity for different
light intensity
• Body moves from left to right at some pace
and left eye covered with darker lens
• It creates a two images illusion
• Not widely used

11. Spectral Separation
• Uses holographic film in glasses that create
dispersive prism like effect
• Causes “redder” objects perceived as near
then “bluer” objects

12. Lenticular of Barriers
• Superimpose two images
• Same sheet
• Alternating strips
• Screen having narrow lenses allows one image
to be shown at some particular angles (using
parallax)

13. Lenticular of Barriers
• Lenses when made cylindrical reflects light at
acute angle
• Viewer have to sit at an angle about 90 degree
• Restricts number of viewers
• Not widely in use

14. New Arrivals
• Without glasses
• Autosterioscopic LCD screens
• Introduced by “Sharp” in 2004
• Autosterioscopic mobile screens by Japan in
2009 (Hitachi)
• Gaming devices: Nintendo 3DS

15. New Arrivals
• A motion film standard
• 70mm film projection
• 8 stories high screen (silver light)
• One of the best 3D experience

16. New Arrivals
• Cheoptics360
• Realistic holograms
• Using pyramidal fog screen and multi
projection techniques