SYNOPSIS

A Seminar submittedFor the partial fulfillment of the degree of

Bachelor of Engineering inComputer Engineering(Session 2010-2014)

Project Coordinator: Submitted by:Mr. Himanshu Sharma Kshitij Kulshrestha (10EUDCS049)

Department of Computer EngineeringJECRC UDML COLLEGE OF ENGINEERING

Dhaab ka nala, Chimanpura, Kukas, Jaipur (RAJ.)

FEB-2014ABSTRACT:

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 smartphone, for example. The lack of space on screen-based displays provides a clear opportunity for screenless 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. Perhaps evoking memories of the early Star Wars films, holographic images can now be generated in three dimensions; in 2013, MIT’s Media Lab reported a prototype inexpensive holographic colour video display with the resolution of a standard TV.

1. INTRODUCTIONWell screenless display, AKA hologram, has such amazing potential that my hope is that the internet can be a medium for collaboration of ideas and information about screenless display that could help break down the barriers that prevent us from making it a reality. Essentially screenless display is a projection that can be seen projected onto the air itself. The only screenless display that has been achieved to my knowledge still uses fog as a medium to reflect light. Other options have been to use mirrors and plastic film to imitate the idea, but no one has been able to reflect light off of air itself. Can it be done? It’s quite possible that it can. Light does reflect off of large amounts of air as we see in our atmosphere but doing it in such a manner that we could pinpoint it to a single area is immensely difficult. So why not take some time and look over some ideas I have collected about the possibilities of screenless display and maybe even share some of your own. Check some of the links below to get a better grasp on the development of the technology.

Screenless display technology is likely to affect Lighting and projection technologies Software development/design Lifestyles of the visually impaired Career opportunities for the visually impaired

Screenless display is the emerging display technology. In these examples you see that the user is able to interact with a three dimensional image projected into thin air. Imagine your desktop floating in the space before your eyes waiting for your interaction!There are two main types of screenless displays that we will share with you today.

Visual Image Retinal Projection

VISUAL IMAGE

Hologram Projection on window

A Screenless display that is visible to anyone who is looking can be projected as a hologram or onto a clear surface like the windshield of a car or aircraft.Visual ImageAny screenless image that the eye can perceive. A hologram is the most common example of visual image screenless display. Arguably, virtual reality goggles (which consist of two small screens but are nonetheless sufficiently different from traditional computer screens to be considered screenless) and Heads-up-display in jet fighters (which display images on the clear cockpit window) also are included in Visual Image category. In all of these cases, light is reflected off some intermediate object (hologram, LCD panel, or cockpit window) before it reaches the retina. In the case of LCD panels the light is refracted from the back of the panel, but is nonetheless a reflected source.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 image (hologram) appears three dimensional May bring more jobs to the movie business.

RETINAL DISPLAY

Another screenless display type is a retinal display. With a retinal display light is not reflected off an immediate object, like in a visual image, but it is projected directly onto the retina. This can be handy in that one is not limited by physical screen size Because there is no immediate object to be viewed, retinal display can be used to keep things such as financial information safe from snooping eyes. The image can take up the entire field of vision. We’ve seen the potential of retinal displays in movies like Terminator. For a flesh-and-blood person the device can be as simple as eyeglasses.

We can see things because of reflected light. Light bounces off of an object and enters our eye. This light then focuses on the retina to form an image.

In retinal projection, the light does not have to be reflected off of an object. The light is projected directly onto the retina to form an image.

This photos show how the images you are seeing do not rely on surfaces of any kind. The are images projected threw air molecules. These images are not limited to being just seen indoors but outdoors as well. However the image quality is affected if it is windy or rainy or especially sunny outside. For indoors use you can use controlled lighting to make the image appear better. You wouldn’t feel anything but air blowing from the projector.