1. Projection/Virtual Interface Architecture By Mariko Nihonayangi For Dr. Sathya Narayanan CST 337: Computing Architectures and Environments May 7, 2008

2. Welcome to the Future of Portable Technologies CSI Miami videoCSI Miami video

3. Brief History They were named on of the best inventions of 2002.They were named on of the best inventions of 2002. Products have been made by companies like:Products have been made by companies like: –LUMIO Virtual Interface Technology –Virtual Devices Incorporated –Canesta/Celluon –NEC Design, Ltd.

4. Basic Concepts Most projection/virtual keyboards use the following basic concepts to function:Most projection/virtual keyboards use the following basic concepts to function: –Laser Technology –Infrared Sensing Unit –Algorithmic Mapping –LED Based Projection Engines

5. How it Works User InputUser Input –Touch Sensitive –Flat 2D Spaces Tables and other surfacesTables and other surfaces AirAir ProjectionProjection –Red Laser Diode Based Diffractive Optical Element –Micro-Projector Module

6. Projection Engines Image Quality Lens based image projectorLens based image projector –Images lose quality at short distances. Static, diffractive projectorsStatic, diffractive projectors –Allows for higher quality of projection by redirecting incident light.

7. Diffractive Micro-Projector Module 1) Collimating Lens1) Collimating Lens 2) Diode Laser2) Diode Laser 3) Diffractive Optical Element3) Diffractive Optical Element 4) Heat Sink4) Heat Sink

8. Dynamic Projectors and Modules LED and collimator are housed in a aluminium casing that serves as a heat sinkLED and collimator are housed in a aluminium casing that serves as a heat sink The fresnel lens helps concentrate the light increasing its intensityThe fresnel lens helps concentrate the light increasing its intensity

9. Summary Virtual Interfaces are a relativity new technology with a few models being developed in the last 10 yearsVirtual Interfaces are a relativity new technology with a few models being developed in the last 10 years They use algorithmic mapping to detect what is being inputtedThey use algorithmic mapping to detect what is being inputted Diffractive or dynamic projectors are used to project the interfaceDiffractive or dynamic projectors are used to project the interface