Hello guys: I am a graduate student at university of arizona. I am currently taking the projects of the head-mounted display and eye tracking. I want to use a MEMS chip in the optical system to achieve 2D scan, but I have some difficulty finding out the MEMS chip. I have some basic requirement of the MEMS: Active Area: 20mm~30mm diameter Axis: X, Y tilt Tilt Range: >±2.5 degree (can be continuously controlled by applied voltage) Response time:<1ms the best, still acceptable if <15ms I did see some papers doing 2D MEMS scanner but the chip size is typically small. Can anybody give me some information about MEMS companies or research groups that have the MEMS chips matching my requirements? I would thanks a million. Shawn NOV 2, 2005