Electrostatically Driven Patents (Class 359/199.2)
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Publication number: 20120162737Abstract: A mirror device includes a mirror (153) which is supported to be pivotable with respect to a mirror substrate (151), a driving electrode (103-1-103-4) which is formed on an electrode substrate (101) facing the mirror substrate, and an antistatic structure (106) which is arranged in a space between the mirror and the electrode substrate. This structure can fix the potential of the lower surface of the mirror and suppress drift of the mirror by applying a second potential to the antistatic structure.Type: ApplicationFiled: March 5, 2012Publication date: June 28, 2012Inventors: Shingo Uchiyama, Shingo Uchiyama, Johji Yamaguchi, Makoto Sato, Kunihiko Sasakura, Hirofumi Morita, Shuichiro Inagaki, Katsuyuki Machida, Hiromu Ishii, Makoto Murakami
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Publication number: 20120162735Abstract: A mirror device includes a mirror (153) which is supported to be pivotable with respect to a mirror substrate (151), a driving electrode (103-1-103-4) which is formed on an electrode substrate (101) facing the mirror substrate, and an antistatic structure (106) which is arranged in a space between the mirror and the electrode substrate. This structure can fix the potential of the lower surface of the mirror and suppress drift of the mirror by applying a second potential to the antistatic structure.Type: ApplicationFiled: March 5, 2012Publication date: June 28, 2012Inventors: Shingo Uchiyama, Shingo Uchiyama, Johji Yamaguchi, Makoto Sato, Kunihiko Sasakura, Hirofumi Morita, Shuichiro Inagaki, Katsuyuki Machida, Hiromu Ishii, Makoto Murakami
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Patent number: 8149489Abstract: A mirror device includes a mirror (153) which is supported to be pivotable with respect to a mirror substrate (151), a driving electrode (103-1-103-4) which is formed on an electrode substrate (101) facing the mirror substrate, and an antistatic structure (106) which is arranged in a space between the mirror and the electrode substrate. This structure can fix the potential of the lower surface of the mirror and suppress drift of the mirror by applying a second potential to the antistatic structure.Type: GrantFiled: December 28, 2005Date of Patent: April 3, 2012Assignee: Nippon Telegraph and Telephone CorporationInventors: Fusao Shimokawa, Shingo Uchiyama, Johji Yamaguchi, Makoto Sato, Kunihiko Sasakura, Hirofumi Morita, Shuichiro Inagaki, Katsuyuki Machida, Hiromu Ishii, Makoto Murakami
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Patent number: 8089672Abstract: A method of controlling an element of an array of individually controllable elements. The method includes varying a frequency of a driving voltage with which the element is driven.Type: GrantFiled: December 19, 2008Date of Patent: January 3, 2012Assignee: ASML Netherlands B.V.Inventors: Patricius Aloysius Jacobus Tinnemans, Heine Melle Mulder, Marius Ravensbergen, Wilfred Edward Endendijk, Jozef Ferdinand Dymphna Verbeeck
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Patent number: 8035874Abstract: A micro-electro-mechanical system (MEMS) mirror device has a mirror, a frame rotatively coupled to the mirror, and a uniaxial actuator rotatively coupled to the frame where the rotational axis of the actuator is offset from the rotational axes of the mirror and the frame. Another MEMS mirror device has a mirror, a frame rotatively coupled to the mirror, and a biaxial actuator rotatively coupled to the frame where the actuator is able to rotate about the rotational axes of the mirror and the frame with the mirror.Type: GrantFiled: February 25, 2009Date of Patent: October 11, 2011Assignee: Advanced NuMicro Systems, Inc.Inventor: Yee-Chung Fu
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Publication number: 20110228367Abstract: Provided is a Micro-Electro-Mechanical Systems (MEMS) device for actuating a gimbaled element, the device including a symmetric electromagnetic actuator for actuating one degree of freedom (DOF) and a symmetric electrostatic actuator for actuating the second degree of freedom.Type: ApplicationFiled: December 2, 2010Publication date: September 22, 2011Applicant: MARADIN TECHNOLOGIES LTD.Inventors: Yoram LUBIANIKER, Raviv ERLICH, Matan NAFTALI, Adi BARAM
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Publication number: 20110188104Abstract: In a semiconductor mechanical structure, hinges may not be broken even when a mechanical shock is applied from outside, and thus, crashworthy is enhanced. A light scanning mirror includes a moving plate, a twin hinges constituting an axis of swing motion of the moving plate wherein an end of each hinge is connected to both ends of the moving plate, a stationary frame which is disposed to surround peripheries of the moving plate and supports another end of each of the twin hinges, and stoppers formed on the stationary frame. When the moving plate displaces in a lateral direction, the stopper contacts a side end portion of a recess of the moving plate, so that the displacement of the moving plate in the lateral direction is restrained. Thereby, the breakage of the hinges is prevented even when the mechanical shock is applied from outside.Type: ApplicationFiled: June 25, 2009Publication date: August 4, 2011Applicant: PANASONIC ELECTRIC WORKS CO., LTD.Inventors: Hiroaki Tachibana, Hiroshi Noge, Kiyohiko Kawano, Hideki Ueda
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Patent number: 7990595Abstract: An optical multi-ring scanner is disclosed, which comprises: a substrate; an outer ring driving element, disposed inside the substrate and configured symmetrically at two sides thereof with a pair of first arms that are connected respectively to the substrate; at least one inner ring driving element, each configured with a first inner ring driver in a manner that the first inner ring driver has a pair of second arms symmetrically disposed at a top side and a bottom side thereof while being connected to the outer ring driving element; and a mirror element, disposed inside the first inner ring driver and having a pair of third arms symmetrically disposed at a top side of a bottom side thereof; wherein, the third arm is disposed coaxial with the second arm while enabling the first arm to be disposed perpendicular to the second arm and the third arm.Type: GrantFiled: June 30, 2010Date of Patent: August 2, 2011Assignee: Industrial Technology Research InstituteInventors: Ming-Chieh Chou, Pin Chang, Hung-Chung Li, Chung-De Chen
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Patent number: 7978388Abstract: When a mirror (230) rotates with a maximum angle, a distance from the rotation center of the mirror (230) to the edge of the mirror (230) along a direction horizontal to an electrode substrate (300) is larger than a distance from a perpendicular, perpendicular to the horizontal direction and extending through the rotation center, to the distal end of an electrode (340a-340d) along the horizontal direction. Even when the mirror (230) rotates to come into contact with the electrode substrate (300), since the electrode (340a-340d) does not exist at a position with which the mirror (230) comes into contact when rotating, the mirror (230) and the electrode (340a-340d) can be prevented from being electrodeposited.Type: GrantFiled: December 27, 2006Date of Patent: July 12, 2011Assignee: Nippon Telegraph and Telephone CorporationInventors: Shingo Uchiyama, Fusao Shimokawa, Johji Yamaguchi, Kunihiko Sasakura, Hiromu Ishii
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Patent number: 7972272Abstract: The present invention provides an imaging probe for imaging mammalian tissues and structures using high resolution imaging, including ultrasound and optical coherence tomography. The imaging probe uses electrostatic discharge for actuating a metalized cantilever which holds the end portion of imaging assembly which emits energy in the imaging probe device by holding the cantilever at a potential such that it is neither grounded or charged such that the only electrical path to ground is through a dissipative polymer forming part of the device which is enveloped by a wire or coil held at ground potential. A high voltage electrode attracts the metalized cantilever and the dissipative polymer is used to connect to the cantilever to ground causing the cantilever to move about thereby scanning the region in front of the probe.Type: GrantFiled: January 22, 2008Date of Patent: July 5, 2011Assignee: University Health NetworkInventors: Nigel Robert Munce, Victor Xiao Dong Yang, Brian Courtney, Amandeep Singh Thind
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Patent number: 7965431Abstract: An optical deflecting device including a mirror member having a light reflective area. The optical deflecting device includes a plurality of electrodes that are formed on a substrate, a fulcrum member that functions as an electrode and a regulation member. The range of movement to a respect direction of the substrate is regulated by the regulation member, which includes a conductive material at least in the surface thereof.Type: GrantFiled: March 17, 2008Date of Patent: June 21, 2011Assignee: Ricoh Company, Ltd.Inventors: Seiichi Katoh, Takeshi Nanjyo
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Patent number: 7961993Abstract: A control section of an optical switch calculates information relating to a polarization amount in an insulating film at each predetermined time, to update the information relating to the polarization amount in the insulating film. On the other hand, when a drive voltage is applied to a MEMS mirror, an initial value of the drive voltage corresponding to an input setting command is read out from an initial value memory, and also, the information relating to the polarization amount in the insulating film is read out from the polarization amount memory, and the initial value of the drive voltage is corrected according to the read information relating to the polarization amount in the insulating film, to thereby set a new drive voltage, and the new drive voltage is applied on electrodes of the MEMS mirror.Type: GrantFiled: November 14, 2008Date of Patent: June 14, 2011Assignee: Fujitsu LimitedInventors: Takashi Shimizu, Kazuyuki Mori
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Patent number: 7933057Abstract: An oscillation system includes first and second oscillation movable elements supported by respective elastic supporting elements. The oscillation system has a first natural oscillation mode of a resonance frequency f1 and a second natural oscillation mode of a resonance frequency of f2 which is approximately N-fold of f1 where N is a natural number. A control device determines set driving frequencies Df1 and Df2 in accordance with a predetermined equation while satisfying a relation Df2=N×Df1 and drives the oscillation system at the set driving frequencies through a driving member.Type: GrantFiled: March 24, 2008Date of Patent: April 26, 2011Assignee: Canon Kabushiki KaishaInventors: Kazunari Fujii, Takahiro Akiyama
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Patent number: 7911672Abstract: A micro-electro-mechanical-system (MEMS) micromirror for use in high fill factor arrays which includes at least one stationary body and a movable body. The movable body has opposed ends and is secured to the stationary body at each of the opposed ends by a resilient primary axis pivot. A mirror support is supported by and movable with the movable body. The mirror support has a first unfettered side and a second unfettered side. A primary axis actuator is provided including a fixed portion connected to the stationary body, and a movable portion corrected to the movable body. The movable portion is adapted to move away from the fixed portion in response to an electrical potential difference between the fixed portion and the movable portion, such that the movable body rotates about the primary axis resilient pivot. A mirror is supported by the mirror support.Type: GrantFiled: December 5, 2007Date of Patent: March 22, 2011Inventor: Tiansheng Zhou
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Patent number: 7907325Abstract: A method for controlling a micromirror device including mirror elements each composed of a micromirror supported on a substrate by an elastic hinge, and a address electrode arranged across the deflection axis of the micromirror comprises deflecting the micromirror by changing a potential to a predetermined waveform for the address electrode.Type: GrantFiled: February 25, 2008Date of Patent: March 15, 2011Assignees: Silicon Quest Kabushiki-Kaisha, Olympus CorporationInventors: Yoshihiro Maeda, Fusao Ishii, Hirokazu Nishino, Kazuma Arai
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Patent number: 7859733Abstract: A scanning apparatus for a printer or similar instrument. A multiharmonic oscillator is used to provide a composite motion of a laser beam or other light beam to scan an imaging surface. The multiharmonic oscillator may have multiple sections each having a different resonant frequency. One section includes a reflector that intercepts the light beam, and drive electronics move the reflector so the light beam scans the imaging surface. Linear and complex non-linear motions of the light beam may be achieved. Microelectromechanical systems (MEMS) technology may be used to fabricate the oscillator.Type: GrantFiled: July 20, 2009Date of Patent: December 28, 2010Assignee: Lexmark International, IncInventors: Roger Steven Cannon, Daniel Richard Klemer
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Patent number: 7817331Abstract: A vertical comb electro-static actuator for rotating a micro-electro-mechanical micro-mirror device about a tilt axis or rotation. The rotor comb fingers of the comb drive extend from a sub-frame of the micro-mirror, which includes a prestressed layer for bending the rotor comb fingers at an angle to the substrate and mirrored platform, enabling the platform, the hinges, the rotor comb fingers and the stator comb fingers to be formed in the same layer, i.e. the same etching step.Type: GrantFiled: March 6, 2008Date of Patent: October 19, 2010Assignee: JDS Uniphase CorporationInventor: Abdul Jaleel. K. Moidu
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Patent number: 7800819Abstract: A high extraction efficiency laser system. The novel laser system includes a laser amplifier and a laser source adapted to provide a laser beam to the amplifier such that polarization states for incident and reflected light within the amplifier are perpendicular one to another. In an illustrative embodiment, the laser beam is input to the amplifier such that the beam reflects back and forth between the side walls of the amplifier with an angle of incidence of about 45 degrees, and the laser beam is linearly polarized in the plane of incidence. This arrangement reduces interference fringes in the amplifier. In an alternative embodiment, the system includes an aberrator adapted to add time-varying aberrations in the laser beam at a rate exceeding an inversed lifetime of an inverted population in the amplifier to increase spatial homogenization of saturation and extraction patterns in the amplifier.Type: GrantFiled: April 18, 2008Date of Patent: September 21, 2010Assignee: Raytheon CompanyInventors: Alexander A. Betin, Vladimir V. Shkunov
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Publication number: 20100172612Abstract: A two-axis tiltable linear array of MEMS micromirrors is described. The individual micromirrors of the array are flexibly suspended over a common substrate by using two pairs of serpentine hinges coupled by a gimbal ring and are actuated by using tilt and roll electrodes. The tilt actuator regions of the micromirrors are disposed within the gimbal rings, the roll hinges connecting the tilt actuator regions to the micromirrors, which provides for decoupling of the tilt and the roll of the micromirror. The structure allows for considerable decoupling of the tilt and the roll and, or the pistoning effects observed upon micromirror actuation. The structure is suitable for application in a wavelength selective optical switch.Type: ApplicationFiled: February 20, 2009Publication date: July 8, 2010Inventor: Abdul Jaleel K. Moidu
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Patent number: 7751108Abstract: The micro-actuation element (X1) includes a movable unit (111), a frame (112) and a coupler (113) for connecting these, where the unit, the frame and the coupler are integrally formed in a material substrate having a multi-layer structure that consists of electroconductive layers (110a-110c), such as a core conduction layer (110b), and insulation layers (110d, 110e) intervening between the electroconductive layers (110a-110c). The movable unit (111) includes a first structure originating in the core conduction layer (110b). The frame (112) includes a second structure originating in the core conduction layer (110b). The coupler (113) includes a plurality of electrically separated torsion bars (113a, 113b) that originate in the core conduction layer (110b) and are connected continuously to the first structure and the second structure.Type: GrantFiled: December 5, 2007Date of Patent: July 6, 2010Assignee: Fujitsu LimitedInventors: Osamu Tsuboi, Yoshihiro Mizuno, Satoshi Ueda, Ippei Sawaki, Hisao Okuda, Fumio Yamagishi, Hiromitsu Soneda, Norinao Kouma
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Patent number: 7742218Abstract: The present invention aims at providing a mirror device, comprising a plurality of mirror elements, wherein each of the mirror elements comprises a deflectable mirror, and an elastic member for deflectably supporting the mirror, wherein the mirror allows to be controlled under a first deflection control state in which incident light is reflected toward a first direction, a second deflection control state in which the incident light is reflected toward a second direction, and a third deflection control state in which the mirror oscillates between the first deflection control state and second deflection control state, wherein the mirror device reproduces gradations by combining the first through third deflection control states, and the natural oscillation cycle T of the oscillation system constituted by the mirror and elastic member satisfies: 110 [?sec]>T=2?*?(I/K)>2 [?sec], where “I” is the moment of rotation of the oscillation system and “K” is the spring constant of the elastic member.Type: GrantFiled: September 4, 2008Date of Patent: June 22, 2010Assignees: Silicon Quest Kabushiki-Kaisha, Olympus CorporationInventors: Hirotoshi Ichikawa, Yoshihiro Maeda, Fusao Ishii
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Patent number: 7738006Abstract: In an electrophotographic (EP) device, methods and apparatus include determining a delay of one or more sensors (hsync) to accurately know when to start the process of scanning latent images. In one aspect, the sensor includes a leading and trailing edge defined along a direction of laser beam scan travel. Determining the delay includes learning a position of a laser beam on the sensor at a time when a controller connected to the sensor receives a signal from the sensor indicating the sensor is being sufficiently impinged upon by the laser beam. It also includes learning a latest possible position of the laser beam along the direction of laser scan travel where the laser beam can be turned on and still have the sensor assert a signal indicating it has been sufficiently impinged upon by the laser beam. Bi-directionally scanning EP devices are also disclosed, including controllers, photoconductors, sensors, etc.Type: GrantFiled: August 23, 2006Date of Patent: June 15, 2010Assignee: Lexmark International, Inc.Inventors: David J. Mickan, Eric W. Westerfield, Daniel E. Pawley
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Patent number: 7715076Abstract: A hybrid electro-static actuator for rotating a two-dimensional micro-electro-mechanical micro-mirror device about two perpendicular axes includes a vertical comb drive for rotating the micro-mirror about a tilt axis, and a parallel plate drive for rotating the micro-mirror about a roll axis. The rotor comb fingers of the comb drive extend from a sub-frame of the micro-mirror, which is only rotatable about the tilt axis, while one of the parallel plate electrodes is mounted on the underside of a main platform, which generally surrounds the sub-frame. The vertical comb drive rotates both the sub-frame and the main platform about the tilt axis, while the parallel plate drive only rotates the main platform about the roll axis.Type: GrantFiled: November 27, 2007Date of Patent: May 11, 2010Assignee: JDS Uniphase CorporationInventor: AbdulJaleel K. Moidu
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Patent number: 7706039Abstract: A disclosed scanner apparatus includes a member having spaced apart proximal and distal portions. An electromagnetic radiation device is configured to direct electromagnetic radiation therefrom and is movably coupled to the distal portion of the member. The electromagnetic radiation device is configured to move in a first plane of movement to a first position to direct the electromagnetic radiation along a first path and configured to move in the plane of movement to a second position to direct the electromagnetic radiation along a second path. A MicroElectroMechanical Systems (MEMS) actuator is coupled to the electromagnetic radiation device, wherein the MEMS actuator is configured to move in a first direction to move the electromagnetic radiation device to the first position and configured to move in a second direction to move the electromagnetic radiation device to the second position. Other scanning and robotic structure devices are disclosed.Type: GrantFiled: July 10, 2008Date of Patent: April 27, 2010Assignees: Duke University, University of North Carolina at CharlotteInventors: Stephen W. Smith, Kenneth L. Gentry, Jason Zara, Stephen M. Bobbio
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Publication number: 20090290205Abstract: An optical deflector of the present invention includes a movable mirror and torsion bars supporting the mirror and formed integrally with the mirror. The mirror reciprocatingly vibrates to reflect a light beam to thereby deflect it. The mirror is curved in the form of an arch in a section including at least the torsion bars. The mirror deforms little during vibration even if it is thin. Small power can cause such a thin mirror to vibrate with a large amplitude.Type: ApplicationFiled: July 31, 2009Publication date: November 26, 2009Inventors: Yukito SATOH, Mitsumi Fujii
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Patent number: 7609426Abstract: An image scanning apparatus for embodying an image using visible lights apparatus includes a scanning unit for irradiating line scan light; a power source for generating voltage for driving the scanning unit; a light detector for detecting duty that is a variation ratio of line scan light with respect to time; and a servo-loop for comparing the detected duty with a preset value, calculating a magnitude of the voltage for driving the scanning unit, and applying voltage, which is controlled depending on the calculated voltage magnitude, to the scanning unit.Type: GrantFiled: December 28, 2006Date of Patent: October 27, 2009Assignee: Samsung Electronics Co., Ltd.Inventors: Yong-Chan Keh, Mun-Kue Park, Byeong-Hoon Park
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Patent number: 7573625Abstract: A scanning apparatus for a printer or similar instrument. A multiharmonic oscillator is used to provide a composite motion of a laser beam or other light beam to scan an imaging surface. The multiharmonic oscillator may have multiple sections each having a different resonant frequency. One section includes a reflector that intercepts the light beam, and drive electronics move the reflector so the light beam scans the imaging surface. Linear and complex non-linear motions of the light beam may be achieved. Microelectromechanical systems (MEMS) technology may be used to fabricate the oscillator.Type: GrantFiled: July 7, 2005Date of Patent: August 11, 2009Assignee: Lexmark International, Inc.Inventors: Roger Steven Cannon, Daniel Richard Klemer
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Publication number: 20090153932Abstract: Embodiments relate to a MEMS device including a scanner rotatable about at least one rotation axis, with the scanner having a characteristic resonant frequency. According to one embodiment, the MEMS device includes drive electronics operable to generate a drive signal that causes the scanner to oscillate at an operational frequency about the at least one rotation axis. The drive signal has a drive frequency selected to be about equal to the characteristic resonant frequency or a sub-harmonic frequency of the characteristic resonant frequency. According to another embodiment, the drive electronics are operable to generate a drive signal having a plurality of drive-signal pulses that moves the scanner at an operational frequency and sensing electronics are operable to sense a position of the scanner only when the drive-signal pulses of the drive signal are not being transmitted by the drive electronics. The MEMS device embodiments may be incorporated in scanned beam imagers, endoscopes, and displays.Type: ApplicationFiled: December 18, 2007Publication date: June 18, 2009Applicant: Microvision, Inc.Inventors: Wyatt Davis, Gregory T. Gibson, Hakan Urey, Thomas W. Montague, Bin Xue, John Lewis
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Publication number: 20090109512Abstract: A microelectromechanical systems (MEMS) scanner is provided. The MEMS scanner includes: a stationary frame; a first movable stage disposed inside the stationary frame and suspended on the stationary frame so as to pivot and vibrate around a virtual center shaft; a second movable stage disposed inside the first movable stage and suspended on the first movable stage so as to pivot and vibrate around the center shaft; and an actuator providing a driving force used to pivot and vibrate the first movable stage.Type: ApplicationFiled: March 25, 2008Publication date: April 30, 2009Applicant: Samsung Electronics Co., Ltd.Inventor: Yong-hwa Park