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Transcript of SCREENLESS DISPLAY
Advantages & Disadvantages
Considered as the early stage of screenless display.
Sits on the face like a pair of glasses.
on one eye it has a block of glass that allows you to see augmented reality.
Images and objects can be displayed right in front of your eye.
It is a 3D interactive raster display technology.
Projects images onto sheets of water droplets suspended in air, giving the illusion of a hologram.
Unlike other cold fog projecting technologies, the images projected by the Displair can also respond rapidly to multi-touch.
Screenless displays is an emerging technology where numerous research is done on an exponential scale day by day.
Our eye perceives the images that are formed in the air without using any kind of screens.
The most common example of Visual Image screen less display is a hologram.
The system works by focusing a laser beam that generates a plasma environment present in air, thus enabling it to display holographic images.
Hologram/Holography is a technique that allows the light scattered from an object to be recorded and later reconstructed so that it appears as if the object is in the same position relative to the recording medium as it was when recorded.
The image changes as the position and orientation of the viewing system changes in exactly
the same way as if the
object were still present,
thus making the recorded
and reconstruction of
holograms are two
major hectic processes.
Construction of a hologram
When a laser beam is passed through beam splitter, it divides the beam into two parts, one is illumination beam and another which is made to fall on mirror.
The object placed in front of beam splitter is illuminated by the illumination beam and the reflected beam from object is captured
on the recording medium.
In this whole construction the arrangement of mirrors is adjusted so that it reflects all the light in every direction with same consistency, and the photographic plate is also well organized to capture all the light incident on it.
Thus both these beams interferes and the interference pattern gets imprinted on photographic plate.
Reconstruction of hologram
In order to view recorded data, we require a key - the original beam
of laser light used while recording.
At the time of reconstruction, the
photographic plate(hologram) is
illuminated by the original beam,
which forms the diffraction
Thus it scatters the light in the air
and the images can be viewed.
Also known as or Virtual Retinal Display.
Here the images are projected directly onto the retina.
With a retinal display light is not reflected off an immediate object,
like in a visual image,
but it is projected
directly onto the
The advantages of
this method is that ,
its not limited by a physical screen size because there is no immediate object to be viewed and can be used to keep information safe from snooping eyes.
Photon generation block generates the coherent beam of light.
photon source makes use of the laser diodes as coherent source with retinal display to give a diffraction onto the retina.
Intensity of the light beam is modulated to match the intensity of the image.
The resulting virtual image is adjusted to make sure that the eye is able to focus comfortably.
Hence is also called as Brain Machine Interface.
Synaptic Interface allows direct interaction between the human brain and external devices such as computer or other electronic device.
Visual information completely bypasses the eye and is Transmitted directly to the brain.
Synaptic Interface or Direct Neural Interface does not use light at all.
Research on BMI's began in the 1970s at the University of California Los angeles (UCLA) under a grant from the National Science Foundation, followed by a contract from DARPA.
The most profound effect that will come from the development of the synaptic interface technology is that it'll allow people who are visually impaired to see.
A camera that
These images are
sent to an electrode
implanted in the
The brain can then interpret these signals, thus creating artificial sight.
In future, the advancements in this technology will overcome today's most challenging problems.
In 2013 Harvard University reported that they established a link between the brains of rat and human.
While such systems have yet to be implemented in humans, success has been achieved in sampling usable video signals from the biological eyes of a living horseshoe crab through their optic nerves, and in sending video signals from electronic cameras into the creatures' brains.
Lower power requirements
Higher resolution images
Light weight and hence greater portability.
Ability to present 3D images
Wider angle of view
More accurate color and Ability to present far point images.
Cost per unit is high. But is not a permanent effect, as the further the technology will develop, it will be more efficient and its cost will be reduced.
Yet not available in significant number. And is still under progress.
Applications for these technologies are limit less.
It will replace the conventional display mechanisms such as CRTs ,LCDs and LEDs.
Latest laser technology are also implementing the special technique of the screen less display through combination of the Laser Valve Video Projector that helps in projecting video images by the use of the laser light instead of the Xenon Arc lamps in producing 3D animations and images.
Screen less display’s major working principle can also be implemented in the emerging of the new screen less TV’s.
Microsoft in 2001 began the work on an idea for an Interactive table that mixes both the physical and the Virtual worlds.
Japanese scientists have invented the pair of intelligent Glasses that remembers where people last saw their keys, Handbags, iPod, and mobile phones.
Adobe systems are also working out for the development and deployment cross platform of the several applications which are to be viewed without the actual screen.
Several laboratories are working under progress on the electron beam lithography which includes the advanced enhancement of the futuristic screen less display.
Screenless displays which is one of the most emerging computer technologies and has become a new exciting rage for the upcoming generations as a field of the futuristic technology.
Its advantages are light weight, portable, lower power requirement.
Due to the ability of having several advantages which are involved in the making, designing, coding of the screenless, this needs plenty of knowledge and process for the development is still under the improvement. May be in the future the world maybe dominated with the screen less display technologies.
Screenless displays are the reality of the future and it promises the cost effective and also a brighter future in the computer technology.
K. Ranganath , M.Sravanthy , P.Krupali, SCREENLESS DISPLAYS – THE EMERGING COMPUTER TECHNOLOGY, International Journal of Engineering Research and Applications (IJERA) ,ISSN: 2248-9622,Vol. 1, Issue 3, pp.942- 947 ,27 Nov. 2013.
Screenless Display-The Reality of Future ,Miss. Ravina Thawale and Assistant. Prof. Sachin Inzalkar,INTERNATIONAL JOURNAL FOR RESEARCH IN EMERGING SCIENCE AND TECHNOLOGY
S7 IT R#8
Guided by:Mr.Sandeep S R
Few parts of this technology is being used at present but they are not so advance yet.
It describes displaying (or) transmitting visual information without the use of screens.
Screenless displays is going to be the reality of future.