Adriatic Research Institute

Veljko Milanovic

Gabriel Matus

Kenneth Castelino

A MEMS system comprises a first rotational actuator having a first drive mechanism configured to drive rotation of a first rotator about a first axis, a second rotational actuator having a second drive mechanism configured to drive rotation of a second rotator about a second axis, first and second flexible linkages, a first drive beam coupled to the first rotator and to the first flexible linkage, a second drive beam coupled to the second rotator and to the second flexible linkage, and one or more device mounts coupled to the first and second flexible linkages. The one or more device mounts are configured to provide distributed points of attachment of a device. The rotation of the first and second rotators causes the device mount to rotate or piston.

MEMS actuators with combined force and bi-directional rotation

Fully monolithic gimbal-less micro-electro-mechanical-system (MEMS) devices with large static optical beam deflection and fabrications methods are disclosed. The devices can achieve high speed of operation for both axes. Actuators are connected to a device, or device mount by linkages that allow static two-axis rotation in addition to pistoning without the need for gimbals, or specialized isolation technologies. The device may be actuated by vertical comb-drive actuators, which are coupled by bi-axial flexures to a central micromirror or device mount. Devices may be fabricated by etching an upper layer both from the top side and from the bottom side to form beams at different levels. The beams include a plurality of lower beams, a plurality of full-thickness beams, and a plurality of upper beams, the lower, full-thickness and upper beams That form vertical combdrive actuators, suspension beams, flexures, and a device mount.

Gimbal-less micro-electro-mechanical-system tip-tilt and tip-tilt-piston actuators and a method for forming the same

A MEMS system is disclosed. The system includes a MEMS device having including a gimbal-less device mount supported by two or more bi-axial linkages. Each bi-axial linkage is mechanically coupled between the device mount and an actuator. Each bi-axial linkage is distinct from the actuator. Each bi-axial linkage includes a first flexure beam configured to flex about a first axis and a second flexure beam attached to the first flexure beam. The second flexure beam is configured to flex about a second axis. The two or more bi-axial linkages provide the device mount with two or more degrees of freedom of movement. The bi axial linkages and device mount are formed from the same device layer. The MEMS device has a mechanical response that is approximately proportional to a square of a drive voltage. A signal converter is adapted to convert a signal representing a desired position of the MEMS device to a voltage and a filter is coupled to the signal converter. The filter has a substantially flat group delay response. The filter doesn't retain any frequencies at or near a natural resonant frequency &#x3c9;of the MEMS device. An output of the filter or signal converter is coupled to MEMS device to provide the drive voltage.

MEMS device control with filtered voltage signal shaping

Fully monolithic gimbal-less micro-electro-mechanical-system (MEMS) devices with large static optical beam deflection and fabrications methods are disclosed. The devices can achieve high speed of operation for both axes. Actuators are connected to a device, or device mount by linkages that allow static two-axis rotation in addition to pistoning without the need for gimbals, or specialized isolation technologies. The device may be actuated by vertical comb-drive actuators, which are coupled by bi-axial flexures to a central micromirror or device mount. Devices may be fabricated by etching an upper layer both from the top side and from the bottom side to form beams at different levels, The beams include a plurality of lower beams, a plurality of full-thickness beams, and a plurality of upper beams, the lower, full-thickness and upper beams That form vertical combdrive actuators, suspension beams, flexures, and a device mount.

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El Cerrito, CA, United States of America

Veljko Milanovic