Patent ID: 7203395
Filing Date: 2007-04-10
Classification: G02B,H02N

Abstract:
1. A miniature movable device comprising a movable part disposed on a substrate and displaceable in parallel to a sheet surface of the substrate, the movable part having a rod portion, at least one pair of fixing parts formed fixedly on the substrate, and at least one pair of hinges which are in the form of a leaf spring, one end of each hinge of the pair connecting to a respective side of the rod portion and the other end of each hinge extending away from the rod portion, extending away from the other hinge and connecting to a respective one of the fixing parts so that the hinges are capable of assuming two flexure conditions which are reversed in flexure, wherein the pair of hinges maintain the movable part at two positions by a mechanical self-holding action when the pair of hinges assume the two flexure conditions, wherein the substrate is formed with pairs of wall surfaces, each wall surface of the pair disposed across from a respective side of a hinge, and wherein spacings between each hinge and each respective pair of wall surfaces are equal at corresponding points along the lengthwise direction of the hinge where a wall surface can contact the hinge when the hinge assumes one of the two flexure conditions.