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  • Made by Sukanya Mukherjee 04121202011 Respective Teacher Guide Ms. Sweety Dabas
  • Visual Images 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. 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.
  • Visual Images examples Hologram/Holographyis 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. Projection on window-
  • This photo shows how the images you are seeing do not rely on surfaces of any kind. These images are 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.
  • 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, 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 safe from snooping eyes. The image can take up the entire field of vision. Weve seen the potential of retinal displays in movies like Terminator. For a flesh- and-blood person the device can be as simple as eyeglasses. Light projected directly to retina Prevents snooping Not limited by physical size
  • On the right is the image of Screen less touch screens mini projector which puts a 10 inch touch screen on any flat surface and on below it is bluetooth laser virtual keyboard This is the future of technology, This technology is also considered for future I phones, in which the keypad is projected on the table adjacent to the surface where the phone is kept. Virtual keyboard
  • Reflected Light How Vision works Object Image 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.
  • Examples Google Glass: o The first screen-less display that needs mentioning is Google Glass. This device has been tested for the past year, and some lucky individuals have even got their devices already. Google Glass sits on the face like a pair of glasses, and on one eye it has a block of glass that allows you to see augmented reality. Images can be displayed right in front of your eye, as well as text and information about objects and places that are in front of you. This technology is only in its early stages, but definitely shows that screen-less displays will become a natural form of media consumption in the future. o It is expected that Google Glass will become fully commercially available in 2014, and some minor changes have been made recently with the design. Namely, the bone audio system, which provides audio by vibrating the bones in your face, has been replaced with a single headphone. It is reported that this is a result of the bone audio technology producing too low a volume.
  • Oculus Rift: o It is an amazing piece of kit that is already available to purchase. This is a headset that completely blocks out the real world, and instead replaces what you see with a pre- programmed image. o This is the ultimate virtual reality machine that displays video and appropriate sounds, and uses its accelerometer to ensure that it feels totally real. If you move your head left, you will see the image that is to the left in the virtual reality scenario. o This kind of technology has a plethora of uses, and today it is constantly being updated and improved to provide you with the very best in screen-less display technology.
  • Oculus Rift and Google Glasses
  • Projected Image Retinal Projection Projector 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.
  • Synaptic Interface Brain Computer Interface or BCI Like cochlear implant for the ears No light projection Image sent straight to brain Achieved only in horseshoe crabs. Could be used to give vision to the impaired in the near future. The Geordie LaForge character (played by LaVar Burton) in Star Trek: The Next Generation wore such a device.
  • Camera sends images to electrode implant A camera that might be incorporated into eyeglasses picks up images. These images are sent to an electrode implanted in the brain. The brain can then interpret these signals, thus creating artificial sight. This can be used to provide vision who have a defect of the eye by bypassing the damaged eye parts and sending a visual signal straight to the brain.