Virtual Retinal Display – A Novel Technology for Creating Visual Images

The virtual retinal display (VRD) is a display technology which scans modulated laser light on the retina of viewer's eye to create an image. The viewer has perception of standing just in front of high resolution screen or projector but in reality image is on the retina of his eye and not on the screen. The VRD is a device that scans an image, one pixel at a time just like ordinary CRT. The VRD takes video signals from a graphics card or video camera as a input , than these signals are used to modulate light according to the intensity of pixel from light source which can be laser diode, gas lasers or Light emitting diodes. The output is an image with excellent quality in means of high resolution with no flickering.