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RealD 3D Trailer (HSBS)
RealD 3D Trailer (HSBS)
Published: 2015/04/04
Channel: Daniel S
How RealD 3D Works
How RealD 3D Works
Published: 2016/09/22
Channel: RealD3D
RealD 3D Trailer in Full HD 1080p | Direct Anaglyph Video | Red/Cyan Glasses | Best 3D Effect
RealD 3D Trailer in Full HD 1080p | Direct Anaglyph Video | Red/Cyan Glasses | Best 3D Effect
Published: 2015/11/10
Channel: Engineering Mantra
RealD 3D
RealD 3D
Published: 2012/06/11
Channel: Wolff Bioscopen
Transformers in RealD 3D
Transformers in RealD 3D
Published: 2014/07/11
Channel: Vue Cinemas
Beauty and the Beast: RealD 3D
Beauty and the Beast: RealD 3D
Published: 2012/01/07
Channel: Disney Movie Trailers
The Jungle Book RealD 3D Featurette with Jon Favreau
The Jungle Book RealD 3D Featurette with Jon Favreau
Published: 2016/04/18
Channel: RealD UK
Avatar Sample in Real d
Avatar Sample in Real d
Published: 2010/03/10
Channel: kanyoukanthekan
How do Real-D 3-D glasses work?
How do Real-D 3-D glasses work?
Published: 2016/05/16
Channel: Benswing Rich
How to make 3D Glasses into 2D Glasses, What?!
How to make 3D Glasses into 2D Glasses, What?!
Published: 2012/06/29
Channel: RichsMethods
Effect of RealD 3d glasses on LCD
Effect of RealD 3d glasses on LCD
Published: 2012/01/06
Channel: buddyconnect
DIY RealD 3D home cinema playing video!
DIY RealD 3D home cinema playing video!
Published: 2011/08/16
Channel: Meu Canal
Технология RealD 3D в СИНЕМА ПАРК
Технология RealD 3D в СИНЕМА ПАРК
Published: 2016/08/19
Channel: СИНЕМА ПАРК
Cars 2 In RealD 3D
Cars 2 In RealD 3D
Published: 2010/11/24
Channel: RealD3D
Cinemark 3D digital (RealD 3D)
Cinemark 3D digital (RealD 3D)
Published: 2010/10/18
Channel: lamitaddetodo
MATT BENNETT gets real with RealD 3D - Nerdy Jobs
MATT BENNETT gets real with RealD 3D - Nerdy Jobs
Published: 2013/07/08
Channel: Nerdist
Real D 3D Medicinema Promo for Guy
Real D 3D Medicinema Promo for Guy's Hospital
Published: 2013/11/27
Channel: Synchronicity II
ТРИТЕ ХИКСА: Отново в играта / REALD 3D и IMAX 3D
ТРИТЕ ХИКСА: Отново в играта / REALD 3D и IMAX 3D
Published: 2017/01/10
Channel: Кино Арена
Put on your RealD Glasses!
Put on your RealD Glasses!
Published: 2015/01/26
Channel: RealD 3D Italia
RealD 3D - Новое измерение развлечений!
RealD 3D - Новое измерение развлечений!
Published: 2013/04/03
Channel: KinomaxCinema
Киномакс Воронеж RealD 3D
Киномакс Воронеж RealD 3D
Published: 2013/12/30
Channel: Славик Славин
Limited Edition Wonder Woman RealD 3D Glasses - Regal Cinemas Exclusive!
Limited Edition Wonder Woman RealD 3D Glasses - Regal Cinemas Exclusive!
Published: 2017/05/30
Channel: Regal Movies
RealD 3D
RealD 3D
Published: 2012/11/26
Channel: Кино Арена
The Lion King 3D RealD 3D Simba Glasses
The Lion King 3D RealD 3D Simba Glasses
Published: 2011/09/12
Channel: RealD3D
Experience Gravity In RealD 3D
Experience Gravity In RealD 3D
Published: 2013/09/27
Channel: RealD3D
Dredd Limited Edition RealD 3D Glasses
Dredd Limited Edition RealD 3D Glasses
Published: 2012/09/21
Channel: 3dfanboy
Жената чудо / на RealD 3D, IMAX 3D и DOLBY ATMOS
Жената чудо / на RealD 3D, IMAX 3D и DOLBY ATMOS
Published: 2017/05/05
Channel: Кино Арена
Технология RealD - подробное описание
Технология RealD - подробное описание
Published: 2012/12/20
Channel: KinomaxCinema
Седмият Син RealD 3D & IMAX 3D
Седмият Син RealD 3D & IMAX 3D
Published: 2014/12/17
Channel: Кино Арена
The Walk RealD 3D feature
The Walk RealD 3D feature
Published: 2015/10/08
Channel: Cineworld Cinemas
ЗООТРОПОЛИС RealD 3D
ЗООТРОПОЛИС RealD 3D
Published: 2016/02/23
Channel: Кино Арена
LEGO® ФИЛМЪТ: БАТМАН / REALD 3D и IMAX 3D
LEGO® ФИЛМЪТ: БАТМАН / REALD 3D и IMAX 3D
Published: 2017/01/10
Channel: Кино Арена
RealD 3D Glasses! | JURASSIC WORLD EXCLUSIVES! |  2015 Chris Pratt Dinosaur Movie
RealD 3D Glasses! | JURASSIC WORLD EXCLUSIVES! | 2015 Chris Pratt Dinosaur Movie
Published: 2015/06/17
Channel: The Jurassic Collection
JURASSIC WORLD -
JURASSIC WORLD - 'RealD 3D' Featurette (2015) Chris Pratt Dinosaur Movie [720p]
Published: 2015/06/08
Channel: Movie Madness Trailers
Спонджбоб: Гъба на сухо RealD 3D
Спонджбоб: Гъба на сухо RealD 3D
Published: 2015/02/03
Channel: Кино Арена
REALD 3D animation test - ROBOT super zeo megazord Ohblocker model real 3d
REALD 3D animation test - ROBOT super zeo megazord Ohblocker model real 3d
Published: 2014/06/08
Channel: Dai Zyujin
Рио 2 RealD 3D
Рио 2 RealD 3D
Published: 2014/03/21
Channel: Кино Арена
Le Petit Prince EN REALD 3D
Le Petit Prince EN REALD 3D
Published: 2015/08/05
Channel: Cinémovida Le Lido
DIY 3D Theater which works with RealD glasses - (The theater - not this video)
DIY 3D Theater which works with RealD glasses - (The theater - not this video)
Published: 2011/09/06
Channel: Jesse Blanchard
reaLD 3D glasses filter with a linear polarising filter
reaLD 3D glasses filter with a linear polarising filter
Published: 2010/01/15
Channel: Steve Mould
Difference Between IMAX 3D and Real 3D
Difference Between IMAX 3D and Real 3D
Published: 2016/03/05
Channel: Carlsson
Робинзон Крузо RealD 3D
Робинзон Крузо RealD 3D
Published: 2016/01/27
Channel: Кино Арена
Antrak Productions RealD 3D Misirlizade Sinema Test01 (Shaban Interactive).mpg
Antrak Productions RealD 3D Misirlizade Sinema Test01 (Shaban Interactive).mpg
Published: 2010/09/28
Channel: Shaban Interactive
reald 3d видео для очков
reald 3d видео для очков
Published: 2016/11/24
Channel: Alexander Tesleo
ДРАКОНЪТ, МОЯТ ПРИЯТЕЛ! / REALD 3D
ДРАКОНЪТ, МОЯТ ПРИЯТЕЛ! / REALD 3D
Published: 2016/08/09
Channel: Кино Арена
Мумията / на RealD 3D, IMAX 3D и Dolby ATMOS
Мумията / на RealD 3D, IMAX 3D и Dolby ATMOS
Published: 2017/05/19
Channel: Кино Арена
Квакъри RealD 3D
Квакъри RealD 3D
Published: 2016/11/07
Channel: Кино Арена
Годзила - премиера на 16 май в RealD 3D и IMAX 3D
Годзила - премиера на 16 май в RealD 3D и IMAX 3D
Published: 2014/04/17
Channel: Кино Арена
Малкият принц RealD 3D
Малкият принц RealD 3D
Published: 2015/12/08
Channel: Кино Арена
How to create a movie in real Reald 3d - tutorial with 3ds max & After Effects
How to create a movie in real Reald 3d - tutorial with 3ds max & After Effects
Published: 2014/06/15
Channel: Dai Zyujin
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WIKIPEDIA ARTICLE

From Wikipedia, the free encyclopedia
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RealD 3D is a digital stereoscopic projection technology made and sold by RealD. It is currently the most widely used technology for watching 3D films in theatres.[1] Worldwide, RealD 3D is installed in more than 26,500 auditoriums by approximately 1,200 exhibitors in 72 countries as of June 2015.[2]

Technology[edit]

Two pairs of RealD glasses demonstrating the polarization effect

RealD 3D cinema technology is a polarized 3D system that uses circularly polarized light to produce stereoscopic image projection. The advantage of circular polarization over linear polarization is that viewers are able to tilt their head and look about the theater naturally without seeing double or darkened images.[3] However, as with other systems, any significant head tilt will result in incorrect parallax and prevent the brain from correctly fusing the stereoscopic images.

The high-resolution, digital cinema grade video projector alternately projects right-eye frames and left-eye frames, switching between them 144 times per second.[3] The projector is either a Texas Instruments Digital Light Processing device or Sony's reflective LCOS (liquid crystal on silicon). A push-pull electro-optical liquid crystal modulator called a ZScreen is placed immediately in front of the projector lens to alternately polarize each frame. It circularly polarizes the frames clockwise for the right eye and counter-clockwise for the left eye.[4] The audience wears circularly polarized glasses that have oppositely polarized lenses that ensures each eye sees only its designated frame. In RealD Cinema, each frame is projected three times to reduce flicker, a system called triple flash. The source video is usually produced at 24 frames per second per eye (total 48 frames/s), which may result in subtle ghosting and stuttering on horizontal camera movements. A silver screen is used to maintain the light polarization upon reflection and to reduce reflection loss to counter some of the significant light loss due to polarization filter absorption. The result is a 3D picture that seems to extend behind and in front of the screen itself.[5]

Intensity, dangers & viewing comfort[edit]

Three-D systems for movies using polarized light cause a significant (about 75%) loss of screen brightness due to the inherent filter absorption. Although the silver screen used in RealD Cinema is brighter than the standard white screen used for 2D projection,[3] the ZScreen polarization filter in front of the projector blocks half of the projected light, then half of the light reflected by the silver screen is filtered away by the polarized glasses. This results in less than 25% of the projected light reaching the eyes of the viewer. Conversely, in a standard 2D system, the only significant cause of light loss is absorption by the white screen. RealD estimates the viewer sees about 35% of the light when viewing RealD 3D when compared to a similarly projected 2D image on a standard white screen.[3] The overall effect is that of wearing a pair of slightly darkened glasses in a standard movie theater, which could be compensated for by using projector lamps that are about three times brighter if a 100% compensation is intended.

Dangers[edit]

These glasses cannot be used as sunglasses despite their dark tint because their effect on nearby radiation (e.g., UV and IR) can be somewhat different. This means they might not block such wavelengths at all. As a result, the 3D glasses might expose the retina of the eye to an even higher dose of potential harmful light components as compared to normal exposure to sunlight as the eye adjusts the width of its iris opening according to the parts it can detect. Such 3D glasses might have warnings on their packaging that they will not work as sunglasses.

Comfort[edit]

Some viewers of 3D movies complain of headaches or nausea during or after viewing.[6][7] These problems can be caused by the viewer tilting his or her head, making it harder for the brain to fuse the two images (due to parallax mismatch between the eyes and the cameras). It can also be caused by rapid transitions in the movie between scenes of very different depth. Consequently, directors and editors of 3D movies should avoid such transitions.[8]

See also[edit]

References[edit]

  1. ^ Verrier, Richard (2009-03-26). "3-D technology firm RealD has starring role at movie theaters". Los Angeles Times. Retrieved 2011-02-05. 
  2. ^ ""Jurassic World" In 3D Delivers Approximately 65% Of Universal Pictures Record-Breaking International Opening Weekend". RealD. Retrieved June 22, 2015. 
  3. ^ a b c d Cowan, Matt. "Real D 3D Theatrical System" (PDF). European Digital Cinema Forum. Retrieved 2009-03-28. 
  4. ^ How it works
  5. ^ Cowan, Matt. "Presentations (technical)". RealD Media Room downloadable files. Retrieved 2009-03-28. 
  6. ^ Watt, Nick (2009-12-19). "Will 'Avatar' Make Viewers Nauseous? The 3D Effects in Blockbuster Movie 'Avatar' Are Claimed to Be 'Vomit Inducing'". ABC News. 
  7. ^ "How to avoid getting a 3D headache while watching Avatar". Shadowlocked. 2009-12-21. 
  8. ^ Needleman, Rafe (2009-06-18). "3D means new rules for directors". 

Further reading[edit]

  • US patent 7477206, "Enhanced ZScreen modulator techniques", issued January 13, 2009, assigned to RealD 
  • US patent 6975345, "Polarizing modulator for an electronic stereoscopic display", issued December 13, 2005, assigned to StereoGraphics Corporation 
  • US patent 5481321, "Stereoscopic motion picture projection system", issued January 2, 1996, assigned to Lenny Lipton 
  • US patent 4884876, "Achromatic liquid crystal shutter for stereoscopic and other applications", issued December 5, 1989, assigned to Lenny Lipton 
  • US patent 4792850, "Method and system employing a push-pull liquid crystal modulator", issued December 20, 1988, assigned to StereoGraphics Corporation 

External links[edit]

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