Abstract:
A micro-electro-mechanical system (MEMS) actuator device is disclosed. The MEMS actuator device has an actuated element (115) that is rotatably connected to a support structure (125) via torsional members (116,117,121,122). The torsional members (116,117,121,122) provide a restoring force to keep the actuated element (115) planar to the surface of an underlying substrate (110). The surface of the substrate (110) has electrodes (130-133,130'-133') formed thereon. The electrodes (130-133,130'-133') are adapted to receive an electrical potential. When an electrical potential is applied to certain of the electrodes (eg. 132',133'), an electrostatic force is generated which causes the actuated element (115) to rotate out of plane. The electrodes (130-133,130'-133') have three components (eg. 132',131,133'). At least a portion of two of the components (eg. 132',131) is within the tilting area of the actuated element (115). The third (eg. 133') is outside the tilting area of the actuated element (115). The tilting area is defined as the surface area of the actuated element (115) as projected onto the underlying substrate (110).
Abstract:
An optical signal processing apparatus includes at least two mirror array chips mounted on an upper surface of a base in close proximity to each other to form a compound array. Each mirror array chip includes a substrate, and a plurality of spaced-apart mirrors mounted on an upper surface of the substrate. The mirrors are movable in response to an electrical signal. A plurality of electrical leads for conduct the electrical signals to the mirrors, at least a portion of the electrical leads extending at least partially along the upper surface of the base between a lower surface of the substrate and the upper surface of the base.
Abstract:
A micro-electro-mechanical system (MEMS) actuator device is disclosed. The MEMS actuator device has an actuated element (115) that is rotatably connected to a support structure (125) via torsional members (116,117,121,122). The torsional members (116,117,121,122) provide a restoring force to keep the actuated element (115) planar to the surface of an underlying substrate (110). The surface of the substrate (110) has electrodes (130-133,130'-133') formed thereon. The electrodes (130-133,130'-133') are adapted to receive an electrical potential. When an electrical potential is applied to certain of the electrodes (eg. 132',133'), an electrostatic force is generated which causes the actuated element (115) to rotate out of plane. The electrodes (130-133,130'-133') have three components (eg. 132',131,133'). At least a portion of two of the components (eg. 132',131) is within the tilting area of the actuated element (115). The third (eg. 133') is outside the tilting area of the actuated element (115). The tilting area is defined as the surface area of the actuated element (115) as projected onto the underlying substrate (110).
Abstract:
An optical switch for use in optical applications utilizes a MEMS reflective shutter (28) and at least one reflecting device (27) to provide optical switching between an input (22) and two or more outputs (24,26) while reducing the amount of physical space required to position the respective input and outputs, and thereby minimize the size of the optical switch.
Abstract:
A highly reliable fuse can be achieved by employing a micro mechanical device (103) that operates to entirely disconnect a relatively low impedance circuit coupled to a pair of electrical connection points (109), e.g., circuit points or terminals. The removal of the electrical circuit is performed as a result of the movement of the micro mechanical device (103). More specifically, the electrical connection may be removed by having at least one low impedance electrical bridge (105) that is part of the circuit break when the micro mechanical device (103) is subjected to prescribed trigger activation forces. When there is more than one relatively low impedance circuit coupling the pair of electrical connection points (109), all of the relatively low impedance circuits must be disrupted, e.g., by breaking at least one low impedance electrical bridge (105) that is part of each circuit.
Abstract:
A highly reliable fuse for explosives and armaments is achieved by employing a micro mechanical device that operates to disrupt a relatively low impedance bypass circuit coupled in parallel with a relatively high impedance trigger mechanism (101). The removal of the electrical bypassing is performed as a result of the movement of the micro mechanical device to enable detonation under prescribed conditions. The electrical bypassing is removed by having at least one low impedance electrical bridge (105) that is part of the bypass circuit break when the micro mechanical device (103,105) is subjected to prescribed trigger activation forces, which are typically large forces, such as are generated during launch or impact. The micro mechanical device may be a micro-electrical mechanical system (MEMS) device and the bridge is at least one spring that is part of the MEMS device and also part of the bypass circuit.
Abstract:
An optical signal processing apparatus includes at least two mirror array chips mounted on an upper surface of a base in close proximity to each other to form a compound array. Each mirror array chip includes a substrate, and a plurality of spaced-apart mirrors mounted on an upper surface of the substrate. The mirrors are movable in response to an electrical signal. A plurality of electrical leads for conduct the electrical signals to the mirrors, at least a portion of the electrical leads extending at least partially along the upper surface of the base between a lower surface of the substrate and the upper surface of the base.