Patent ID: 6819470
Filing Date: 2004-11-16
Classification: G02B

Abstract:
A method of constructing an array of mirrors, such that each mirror is individually rotateable into at least two states, comprising the steps of:constructing a metallization layer for electrostatically addressing the mirrors of the array; constructing a yoke layer in a plane separate from the plane of the metallization layer, the yoke layer comprising at least a yoke for supporting each mirror, and a hinge for supporting the yoke over the metallization layer, wherein the hinge permits the yoke to tilt in response to electrostatic addressing, and further comprising a pair of springtips at each leading edge of the yoke, the springtips operable to land on the metallization layer when the mirror is tilted; and constructing a mirror layer in which the mirrors are fabricated; increasing the spacing between the springtips of each springtip pair and the height of the yoke for optimal performance; wherein the optimal performance provides increased clearance between the addressing circuitry first portion and the leading edge of the yoke without significant comprise to electrostatic performance.