07-04-2009, 11:17 PM
Our window into the digital universe has long been a glowing screen perched on a desk. It's called a computer monitor, and as you stare at it, light is focused into a dime-sized image on the retina at the back of your eyeball. The retina converts the light into signals that percolate into your brain via the optic nerve. Here's a better way to connect with that universe: eliminate that bulky, power-hungry monitor altogether by painting the images themselves directly onto your retina. To do so, use tiny semiconductor lasers or special light-emitting diodes, one each for the three primary colors red, green, and blue and scan their light onto the retina, mixing the colors to produce the entire palette of human vision. Short of tapping into the optic nerve, there is no more efficient way to get an image into your brain. When we think of head-up displays, we tend to think of supersonic jet pilots careening through the upper atmosphere with data hovering before their eyes. But Microvision, a maker of MEMS-based head-up display technology, is also pursuing more mundane niches like wearable displays for automotive technicians. Micro-Electro-Mechanical Systems (MEMS) is the integration of mechanical elements, sensors, actuators, and electronics on a common silicon substrate through microfabrication technology. While the electronics are fabricated using integrated circuit process sequences (e.g., CMOS, Bipolar, or BICMOS processes), the micromechanical components are fabricated using compatible "micromachining" processes that selectively etch away parts of the silicon wafer or add new structural layers to form the mechanical and electromechanical devices. MEMS promises to revolutionize nearly every product category by bringing together silicon-based microelectronics with micromachining technology, making possible the realization of complete systems-on-a-chip. Man always believes in improving his vision through which he sees the world. It was he who invented the television and computer to enhance his vision. The Technology in advance it was his turn to fine something new. Microvision a company which is a world leader in vision technologies came up with an idea of projecting the much required information directly on to the retina. This has set to revolutionise the industry with its application. Through the seminar I intend to provide an insight to this equipment its principle components application and advantages.