Abstract:
A micro-electro-mechanical optical device is disclosed. The micro-electro-mechanical optical device includes a micro-electro-mechanical structure coupled with an optical device. Both the micro-electro-mechanical structure and the optical device are disposed on a substrate surface. The micro-electro-mechanical structure lifts the optical device a predetermined distance above the plane of the substrate surface. Thereafter, the lifted optical device is moveable relative to the plane of the substrate surface in response to an electrostatic field generated between the optical device and the substrate.
Abstract:
A multi-axis magnetically actuated device, an array of multi-axis magnetically actuated devices, and a method of fabrication of a multi-axis magnetically actuated device are disclosed. In addition, disclosed is an optical switch comprised of an array of multi-axis magnetically actuated devices and an array of ports adapted to receive an optical waveguide such as, for example, an optical fiber. The multi-axis magnetically actuated device of the invention is capable of rotational movement in two orthogonal directions. In one embodiment, the multi-axis magnetically actuated device comprises two nested rotational members, an inner rotational member nested within an outer rotational member that in turn is nested within a base member. The inner rotational member is mounted by two inner torsional flexures to the outer rotational member that in turn is mounted by two outer torsional flexures to the base member. The inner torsional flexures define an inner axis of rotation while the outer torsional flexures define an outer axis of rotation. The rotational motions of each rotational member arise in response to an interaction between a magnetic influence and a magnetic moment generated by a current passing through coils arranged adjacent to a surface of the inner rotational member. Bulk micromachining techniques enable the members to be formed from a monolithic silicon wafer and can produce a member with a smooth surface. The smooth surface of a member may function as a reflector. In one embodiment, the inner rotational member functions as a reflector.
Abstract:
Micromechanical devices are provided that are capable of movement due to a flexible portion. The micromechanical device can have a flexible portion formed of a nitride of preferably an element from groups 3A to 6A of the periodic table (preferably from the first two rows of these groups) and a late transition metal (preferably from groups 8B or 1B of the periodic table). The micromechanical devices can be any device, particularly MEMS sensors or actuators preferably having a flexible portion such as an accelerometer, DC relay or RF switch, optical cross connect or optical switch, or a micromirror part of an array for direct view and projection displays. The flexible portion is preferably formed by sputtering a target having a group 8B or 1B element and a group 3A to 6A element. The target can have other major constituents or impurities (e.g. additional group 3A to 6A element(s)). The target is reactively sputtered in a nitrogen ambient so as to result in a sputtered hinge. It is possible to form both stiff and/or flexible portions of the micromechanical device in this way.
Abstract:
A microelectromechanical (MEM) apparatus is disclosed which has a platform that can be elevated above a substrate and tilted at an arbitrary angle using a plurality of flexible members which support the platform and control its movement. Each flexible member is further controlled by one or more MEM actuators which act to bend the flexible member. The MEM actuators can be electrostatic comb actuators or vertical zip actuators, or a combination thereof. The MEM apparatus can include a mirror coating to form a programmable mirror for redirecting or switching one or more light beams for use in a projection display. The MEM apparatus with the mirror coating also has applications for switching light beams between optical fibers for use in a local area fiber optic network, or for use in fiber optic telecommunications or data communications systems.
Abstract:
An optical switch device includes a rolling shutter or membrane attached at one of its edges to a substrate near an optical port in the substrate. The rolling shutter can assume one of two states. In a first closed state, the membrane is uncoiled onto the substrate over the port such that light directed at the port impinges on the shutter. In a second open state, the membrane is rolled up away from the port such that light directed at the port impinges on the port. In one embodiment, a mirror is formed on the membrane such that when the membrane is in the closed state over the substrate, light directed at the port is reflected by the mirror. In one configuration, the optical port includes a hole or aperture such light passed through the port without interference. The device can include a latch electrode the far end of the membrane such that when it is rolled out, it can be held in position by a latching voltage applied across the latch electrode and the substrate. Slits can be formed in the membrane to keep the mirror flat by relieving strain in the membrane and to allow gases in proximity to the device to pass through the membrane as it is activated. The shutter can include dimples to minimize the area of contact between the membrane and the substrate to reduce the probability of the two sticking together. The attachment edge of the membrane can be made shorter than its width to reduce distortions in the membrane to keep the mirror flat. A raised annular rim can be provided around the port such that when the shutter is held down over the port it is pulled taut and flat over the rim. This feature is also used to maintain flatness in the mirror. The switch device can be used as part of an array of optical switches.
Abstract:
MEMS dies embedded in glass cores of integrated circuit (IC) package substrates are disclosed. An example integrated circuit (IC) package includes a package substrate including a glass core, the example integrated circuit (IC) package also includes a micro electromechanical system (MEMS) die positioned in a cavity of the glass core.
Abstract:
A method for controlling a drive apparatus (20) of a micro-oscillation mirror (16), a control device (28) and a deflector mirror apparatus (14) are described. The drive apparatus (20) has at least two comb drives (22a, 22b) which are arranged on different radial sides of a pivoting axis (18) of the micro-oscillation mirror (16). In the method, at least two actuation signals AS1, AS2) are generated, and the at least two comb drives (22a, 22b) are therefore actuated at least temporarily in such a way that they drive the micro-oscillation mirror (16) in an oscillating fashion. At least one elongation signal (P1, P2), which characterizes the elongation (26) of the micro-oscillation mirror (16) is generated using at least one comb drive (22a, 22b). At least one of the actuation signals (AS1, AS2) is adapted to the oscillation of the micro-oscillation mirror (16) on the basis of at least one of the elongation signals (P1, P2), At least one of the comb drives (22a, 22b) is connected, by means of at least one switching apparatus (34), alternately to an actuation apparatus (32) for receiving at least one actuation signal (AS1, AS2) or to an elongation-detection apparatus (24) for generating at least one elongation signal (P1, P2).
Abstract:
Provided is a technology for improving the resolution and the angle of view of an image projection device. The image projection device includes an optical waveguide element including at least one incident port on which a laser beam is incident and a plurality of emission ports from which the laser beam is emitted, and a scanning mirror that performs scanning with the laser beam emitted from the optical waveguide element, in which the laser beam with which the scanning mirror performs the scanning reaches a projection target. The image projection device further includes a hologram element that condenses the laser beam with which the scanning mirror performs the scanning on a vicinity of a pupil to allow the laser beam to reach a retina.
Abstract:
An actuator device includes a support portion, a movable portion, a connection portion which connects the movable portion to the support portion on a second axis, a first wiring which is provided on the connection portion, a second wiring which is provided on the support portion, and an insulation layer which includes a first opening exposing a surface opposite to the support portion in a first connection part located on the support portion in one of the first wiring and the second wiring and covers a corner of the first connection part. The rigidity of a first metal material forming the first wiring is higher than the rigidity of a second metal material forming the second wiring. The other wiring of the first wiring and the second wiring is connected to the surface of the first connection part in the first opening.
Abstract:
The present disclosure is directed to imaging LiDARs monolithic integration of focal plane switch array LiDARS with CMOS electronics. The CMOS wafer contains electronic circuits needed to control the focal plane array, e.g., digital addressing circuits and MEMS drivers, as well as circuits to amplify and process the detected signals, e.g., trans-impedance amplifiers (TIA), multi-stage amplifiers, analog-to-digital converters (ADC), digital signal processing (DSP), and circuits to communicate with external systems. Methods of use are also provided.