Abstract:
Dispositivo MEMS electroóptico reflector digital que comprende un elemento conductor (7), que es una pieza suelta y mecánicamente independiente de su entorno, y se desplaza a través de un espacio intermedio (5) del dispositivo en función de unos voltajes presentes en unas placas de condensador (1, 2, 3), y una superficie reflectora (19), que refleja un haz de luz incidente y es solidaria al elemento conductor (7). El elemento conductor (7) se mueve en el espacio intermedio (5) hasta apoyarse en unos puntos de apoyo dispuestos de tal manera que obligan al elemento conductor (7) a cambiar de orientación. Procedimiento de actuación del dispositivo MEMS anterior que comprende la aplicación de unos voltajes a las placas tales que el elemento conductor cambie de orientación. El elemento conductor también se puede mover en el espacio intermedio una distancia tal que provoca interferencias en función de la posición del elemento conductor.
Abstract:
A variable focal length lens (121) consists of many micromirrors (122) with degrees of freedom rotation and/or degrees of freedom translation and actuating components. As operating methods for the lens, the actuating components control the positions of micromirrors (122) electrostatically and/or electromagnetically. The optical efficiency of the variable focal length lens is increased by locating a mechanical structure upholding micromirrors and the actuating components under micromirrors. The lens (121) can correct aberration by controlling each micromirror independently. The lens (121) can also be of a desired arbitrary shape and/or size. The micromirrors (122) are arranged in a flat plane or in a curved plane with a predetermined curvature. The electrodes determining the position of the micromirrors can be made of material with high electrical conductivity, preferably metal. The surface material of the micromirror is made of a material with high reflectivity such as aluminum, silver, and gold, which are coated with multi-layer dielectric material or antioxidant.
Abstract:
Apparatus and methods are provided for removing jitter and stabilizing the feedback system of a torsional hinged device. Light source from beam 16 is directed toward a reflective surface of a rotating mirror 10 onto a photosensitive medium 20. Sensors 22a, 22b provide movement sensing signals to monitor and control circuitry 26 which controls drive mechanism 12. Stabilization is accomplished by providing asymmetry in the oscillating device 10 or the drive torque 18 applied to the device, to introduce a slight lateral motion in addition to the rotational motion.
Abstract:
The invention relates to a method for production of an operation system for an optical component, comprising the engraving of a first face of a component to form blocks thereon, the engraving of a second face of the component to release a membrane of the same material as the blocks and the production of operating means of the blocks and the membrane.
Abstract:
There is a need for a small and fast optical zoom device that can change magnification. Conventional zoom devices require coupled mechanical motions to adjust the axial separations between individual or groups of elements in order to change the optical magnification. The mechanical motions decrease the speed of zooming, increase space and weight for zoom system, may induce unwanted jitter, and require large power consumption. In addition, the mechanical zoom system is restricted to magnifying the area on-axis. To solve problems of conventional zoom system, the zoom system utilizing one or more variable focal length micromirror array lenses without macroscopic mechanical motion of lenses is invented.
Abstract:
Multi-tilt mirrors, assemblies and applications of the same, and methods of making. Micromirror devices employing a superstructure that includes a mirror supported over a hinge set above a substructure. Various features described are applicable to improve manufacturability, enable further miniaturization of the elements and/or to increase relative light return. Devices can be produced utilizing the various optional features described herein to provide miniaturized, highly controllable optics solutions.
Abstract:
A functional surface, such as a reflective surface, is supported by a pair of torsional hinges for pivoting about a first axis which in turn is supported by a pair of anchors, according to one embodiment. The reflective surface may be driven into resonant oscillations about the first axis by inertially coupling energy to the device. According to a dual axis embodiment, the reflective surface is attached by torsional hinges to a gimbals portion which in turn is attached to the support members by a second pair of torsi al hinges which are orthogonal with the first pair of hinges so as to provide for pivoting of the surface about both pairs of torsional hinges. Thus, a light source may be reflected from a reflective surface to produce a beam sweep and moved orthogonally by the gimbals portion. The devices may be etched from silicon.
Abstract:
In an optical switch for routing an optical signal, a deflecting member is mounted movably on a base and is tiltable about a fulcrum shaft so as to deflect the optical signal. Multiple elongate cantilevers are disposed on the base and are arranged around the deflecting member. Each cantilever has a coupling end portion connected to the base and opposite to a hammer end portion disposed on a periphery of the deflecting member. Control units are disposed on the base, and are operably and respectively associated with the cantilevers so as to control movement of the cantilevers to an appropriate one of a suspending position, where the hammer end portion is spaced apart from the deflecting member, and a pumping position, where the hammer end portion strikes the deflecting member, thereby forcing the deflecting member to tilt to a desired direction about the fulcrum shaft.