This document discusses emerging screenless display technologies. It describes visual image displays like holograms, which project three-dimensional images into thin air. Retinal displays are also discussed, which project images directly onto the retina, like the Glyph and Oculus Rift. Finally, synaptic interfaces are mentioned, which transmit visual information directly to the brain without using light. Advantages of screenless displays include wider viewing angles, higher resolution, and portability, though challenges remain in widespread commercialization. The future potential of these technologies to help the visually impaired is also noted.

1. MADE BY:
A.MANIKANTA
11621A0401

2. OLD
SCHOOL
Here we see examples of the current display
technology…touch screen. Many of us have smart
phones or tablet computer with touch screen
displays. We predict that our touch screen displays
will soon be as “old school” as chalk boards.

4. Screen less displays
Screen less display is the emerging
display technology. In the previous
examples we can see that the user is
able to interact with a three
dimensional image projected into thin
air. This technology seems a fantasy but
is quite real.

5. Introduction
 One of the more frustrating aspects of modern
communications technology is that, as devices have
miniaturized, they have become more difficult to
interact with – no one would type out a novel on a
smart phone, for example.
 The lack of space on screen based displays provides a
clear opportunity for screen less displays to fill the
gap.
 Full sized keyboards can already be projected onto a
surface for users to interact with, without concern
over whether it will fit into their pocket.

6. Movie Depiction
This is a familiar
image.
This picture is taken
from the famous
movie “Avatar”.
Screen less display
technology has been
depicted in movies
for decades.

7. Types of Screenless Displays
Screenless
Display
Visual Image Screen less
Display
Synaptic Interface
Retinal Direct Display

8. Types of Displays
 There are three main types of screen less displays that I
will share in the next presentation.
1. Visual Image- screen less display includes any image
that the eye can perceive.
2. Retinal Projection- these systems are a class of screen
less displays in which images are projected directly
onto the retina.
3. Synaptic Interface/Brain Computer Interface- this
screen less video does not use light at all. Visual
information completely bypasses the eye and is
transmitted directly to the brain.

9. Visual Image
• Visual Image screen less display includes any screen less
image that the eye can perceive or see.
• Example: Hologram
• It is made by illuminating with lasers or display in a darkened room with carefully
directed lighting.
• They're two-dimensional surfaces that show absolutely precise, three-dimensional
images of real objects.
• If you look at these holograms from different angles, you see objects from different
perspectives, just like you would if you were looking at a real object. Some holograms
even appear to move as you walk past them and look at them from different angles.
Others change colors or include views of completely different objects, depending on
how you look at them.

10. Working of Hologram

11. Products of Visual Screen
 air touch system.

12. air touch system.
 It works by projecting laser beem into humid air
molecules.
 We have to move our hands our the humid air where
the display is present.

13. Virtual retinal display

14. Working of VRD

15. Virtual retinal display
 They are screen less displays in which images are projected
directly onto the retina of eye
 They are distinguished from visual image systems because light
is not reflected from some intermediate object onto the retina.
 It is instead projected directly onto the
retina.
 The user sees what appears to be a conventional display floating
in space in front of them.

16. Working of VRD

17. Virtual retinal display
 The VRD was invented at the University of Washington in the
Human Interface Technology Lab in 1991.
 The development of high-brightness LEDs have made the
displays bright enough to be used during the day and adaptive
optics have allowed systems to dynamically correct for
irregularities in the eye.


18. Products using VRD
GLYPH

19. .
GLYPH
Avegant can achieve only 45 degree Field of view

20. GLYPH
 Avegant is currently in the process of refining their Glyph
Alpha prototype into the consumer version.
 Avegant Glyph Beta to be released early 2015.
 It displays video via HDMI connection
 It has 3 hours of video viewing battery life and Audio via
Bluetooth and TRRS jack

21. Rift
• It uses a OLED display to
eliminate motion blur and judder,
two of the biggest contributors to
simulator sickness.
• Low persistence makes the scene
appear visually stable, increasing
the potential for presence.

22. 2.
 Oculus VR is still in Prototype Stage
 It is used for playing immersive games
 We can play games in 360 degree Head Tracking.
 The Oculus Rift creates a stereoscopic 3D view with
excellent depth, scale, and parallax.
 Oculus Rift provides an approximately 100° field of
view

23. Synaptic Interface

24. Camera sends images to
electrode implant

25. Synaptic Interface
 Synaptic Interface screen less video does not use light at
all.
 Visual information completely bypasses the eye and is
Transmitted directly to the brain. 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,
 In sending video signals from electronic cameras into the
creatures' brains.

26. Predictions
 Screen less display technology is likely to affect
1. Lighting and projection technologies
2. Software development/design
3. Lifestyles of the visually impaired
4. Career opportunities for the visually impaired
 The most profound effect will come from the development of the
synaptic interface technology.
 This technology will allow people who are visually impaired to see.
Imagine a visually impaired person gaining the freedom to drive again!
 This will also remove occupational limitations of the visually impaired.

27. Experts Say....
 Futurist Reto Meier predicts that 10 years from now we will be
able to get transparent LCD patches that will adhere to our
eyeglasses and 20 years from now we’ll have contact lenses that
project images directly onto our retinas and that we will be able
to interface with computers through mind control.
 We don’t know about that but the screen less display
technologies are sure to affect related technologies related to
lighting and projection.
 Software will have to be designed to work with the new display
technology and output will have to be geared to brighter, more
contrasted colors to aid visibility.

28. Advantages OF Screenless Display
 Wider angle of view- Retinal projectors will be able to provide
a wider field of view than is possible with display screens.
 Greater brightness and better contrast- Retinal projectors can
provide higher levels of contrast and brightness than any
other display system.

29. Advantages OF Screenless Display
 Low power requirements- Only six diodes are required and a few of a
watts to deliver their images to the user’s eyes.
 Higher resolution images- The pixels in the images projected by the
diodes can be made smaller than is possible with any CRT or flat panel
display, so higher resolution can be achieved. With retinal projectors, the
only limitation in the resolution of visual images will be the resolving
power of the users’ eyes.
 Greater portability- The combination of diodes, lenses, and processing
components in a retinal projector system will weigh only a few ounces.

30. Disadvantages Screenless Display
 The principle disadvantage is that Virtual retinal
display (VRD) is not yet available in the significan
number.
 Prototypes and special experimental models are now
being Built, but their cost per unit is high.
 The VRD technology is still under progress and
Development.

31. Conclusion:-
 The future technologies makes our life even better for the
development of mankind in all aspects of life.
 We should effectively apply these technologies in
reasonable situations and make life easier.
 Physically and Mentally challenged people also have to be
equipped with latest technologies, to enable them to live a
peaceful life.