Patents by Inventor Arthur R. Piehl
Arthur R. Piehl has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 7834829Abstract: A circuit and method for controlling a micro-electromechanical system is herein disclosed. In one embodiment of a micro-electromechanical system having top and bottom capacitor plates with a pixel plate movably positioned therebetween, a release voltage sufficient to overcome stiction forces adhering the pixel plate to one of the capacitor plates is applied to the pixel plate to cause the pixel plate to be attracted to the pixel plate opposite the capacitor plate to with which the pixel plate is in contact. After the pixel plate has moved a predetermined distance away from the capacitor plate to which it had been adhered by stiction forces, the release voltage is removed. Thereafter, an positional voltage is applied to the pixel plate to move the pixel plate to a desired location between the capacitor plates. Release and positional voltages are coupled to and decoupled from the pixel plate by one or more switching mechanisms.Type: GrantFiled: October 3, 2005Date of Patent: November 16, 2010Assignee: Hewlett-Packard Development Company, L.P.Inventors: Eric Martin, Arthur R. Piehl
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Patent number: 7760197Abstract: Systems, methodologies, and other embodiments associated with a micro-electrical-mechanical system (MEMS) Fabry-Perot interferometric device (FPID) are described. Fabricating a MEMS FPID may include fabricating a pixel plate and a reflector plate so a Fabry-Perot cavity is defined therebetween. Fabrication may include producing a capacitor plate that facilitates electrostatically moving the pixel plate. Fabrication may include producing electrical connections between plates and producing circuitry to control plate voltages to facilitate creating an electrostatic force between plates. The MEMS FPID may include stops fabricated from a conductive material and circuitry for maintaining the stops and plates at an electrical potential that will yield a zero electric field contact event.Type: GrantFiled: October 31, 2005Date of Patent: July 20, 2010Assignee: Hewlett-Packard Development Company, L.P.Inventors: Kenneth J. Faase, James McKinnell, Arthur R. Piehl, Murali Chaparala, James R. Przybyla, Bao Yeh, Adel Jilani, Eric Nikkel
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Patent number: 7570417Abstract: A micro-electro mechanical light modulator device includes a movable reflective plate, a fixed partial reflective plate, an optical gap defined between the reflective plate and the fixed plate, and an actuator configured to move the reflective plate through an operating range wherein a neutral state position of the reflective plate approximately corresponds to a black state value of the optical gap.Type: GrantFiled: October 18, 2007Date of Patent: August 4, 2009Assignee: Hewlett-Packard Development Company, L.P.Inventors: James McKinnell, Arthur R. Piehl
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Patent number: 7529026Abstract: An optical system having a radiation transparent member and an anti-reflective embossment embossed into at least one surface of the transparent member. The embossment has spaced structures configured to permit incident radiation to pass through the embossment and the radiation transparent member, and to, at least, attenuate reflection of the incident radiation off the embossment. The structures are maximally spaced from one another by a subwavelength of the incident radiation.Type: GrantFiled: April 28, 2005Date of Patent: May 5, 2009Assignee: Hewlett-Packard Development Company, L.P.Inventors: Daniel C. Gardner, Arthur R. Piehl
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Patent number: 7447891Abstract: An electronic device for at least partially displaying a pixel of an image, the device comprising first and second reflectors defining an optical cavity therebetween, the optical cavity being selective of an electromagnetic wavelength at an intensity by optical interference, the device having a concentric control structure comprising at least an inner and an outermost electrode, the optical cavity being controlled only by the inner electrode.Type: GrantFiled: September 21, 2005Date of Patent: November 4, 2008Assignee: Hewlett-Packard Development Company, L.P.Inventors: Kenneth James Faase, Adel Jilani, James McKinnell, Eric L. Nikkel, Arthur R. Piehl, James R. Przybyla, Bao Yeh
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Publication number: 20080174703Abstract: A sensing modulator is disclosed. The sensing modulator includes a light modulator array and a plurality of photosensors, each of the plurality of photosensors being adjacent to the light modulator array.Type: ApplicationFiled: January 18, 2007Publication date: July 24, 2008Inventor: Arthur R. Piehl
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Publication number: 20080101748Abstract: A MEMS device and method include a mechanical plate that is raised or lowered by pivoting a lever coupled to the mechanical plate by a flexible beam.Type: ApplicationFiled: October 26, 2006Publication date: May 1, 2008Inventors: Adel B. Jilani, Kenneth James Faase, Bao Sung B. Yeh, Arthur R. Piehl, Michael G. Monroe, James R. Przybyla
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Patent number: 7319552Abstract: A micro-electro mechanical light modulator device includes a movable reflective plate, a fixed partial reflective plate, an optical gap defined between the reflective plate and the fixed plate, and an actuator configured to move the reflective plate through an operating range wherein a neutral state position of the reflective plate approximately corresponds to a black state value of the optical gap.Type: GrantFiled: June 9, 2005Date of Patent: January 15, 2008Assignee: Hewlett-Packard Development Company, L.P.Inventors: James McKinnell, Arthur R. Piehl
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Patent number: 7293879Abstract: A projection screen for use in a projection system is described. In an embodiment of the present invention, a projection system includes a projector and a projection screen. The projector is configured to project an image composed of visible light in one or more ranges of wavelengths. The projection screen has a plurality of sub-pixels that reflect and/or transmit the one or more ranges of wavelengths to display the image and absorb visible wavelengths of light in at least one other range not included in the one or more ranges. One or more spaces are defined between adjacent sub-pixels that reflect and/or transmit the one or more ranges and the at least one other range.Type: GrantFiled: October 23, 2003Date of Patent: November 13, 2007Assignee: Hewlett-Packard Development Company, L.P.Inventors: Adam Ghozeil, Bjorn Warloe, Will Allen, Michael A. Pate, Jim Przybyla, Arthur R. Piehl, Nathan McPherson Moroney
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Patent number: 7218438Abstract: An optical electronic device with a partial reflector layer is disclosed. The device includes a first reflector and a second reflector that define an optical cavity therebetween. The second reflector includes at least one material having a refractive index and an extinction coefficient, each ranging between about 1 and about 5 across the visible spectrum. A mechanism is included which is configured to permit variation of the optical cavity.Type: GrantFiled: September 29, 2005Date of Patent: May 15, 2007Assignee: Hewlett-Packard Development Company, L.P.Inventors: James R. Przybyla, Arthur R. Piehl
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Patent number: 7199916Abstract: A light modulator device includes a bottom charge plate; a pixel plate supported by at least one flexure, wherein the flexure is located substantially below said pixel plate, and a top charge plate.Type: GrantFiled: December 7, 2004Date of Patent: April 3, 2007Assignee: Hewlett-Packard Development Company, L.P.Inventors: Kenneth J. Faase, Michael G. Monroe, Eric L Nikkel, Arthur R. Piehl, James R. Przybyla
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Patent number: 7187487Abstract: A spatial light modulator includes a first region and a second region. A light-absorbing layer contacts at least a portion of the second region. The light absorbing layer includes a first layer and a second layer, the second layer having a reflectivity less than about 75%.Type: GrantFiled: July 30, 2004Date of Patent: March 6, 2007Assignee: Hewlett-Packard Development Company, L.P.Inventors: James R. Przybyla, Arthur R. Piehl, Michael G. Monroe
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Patent number: 7184193Abstract: A micro-electro mechanical system includes a flexure, wherein the flexure is made of an amorphous material. Similarly, a method for forming a micro-electro mechanical system includes forming a substrate, and forming an amorphous flexure, the amorphous flexure being coupled to the substrate.Type: GrantFiled: October 5, 2004Date of Patent: February 27, 2007Assignee: Hewlett-Packard Development Company, L.P.Inventors: James McKinnell, Arthur R. Piehl, James R. Przybyla
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Patent number: 7056759Abstract: A microelectromechanical system is made by establishing a flexure protection layer over a portion of at least one flexure which is located on a substrate. The flexure protection layer is deposited such that a portion of the flexure is left exposed. Contact is established between a flexure-engaging element and the exposed portion of the flexure. The remaining flexure protection layer is removed after the flexure-engaging element is patterned and etched.Type: GrantFiled: April 27, 2004Date of Patent: June 6, 2006Assignee: Hewlett-Packard Development Company, L.P.Inventors: James R. Przybyla, Arthur R. Piehl
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Patent number: 6987610Abstract: A projection screen for use in a projection system is described. In an embodiment of the present invention, a projection screen includes a substrate having one or more fluorescent materials. The one or more fluorescent materials emit visible light with the incidence of one or more ranges of wavelengths of light. The one or more fluorescent materials absorb visible light in at least one other range of wavelengths that is not included in the one or more ranges. The visible light emitted by the one or more fluorescent materials provides an image with the incidence of an output from a projector. The output of the projector has wavelengths of light in the one or more ranges.Type: GrantFiled: October 23, 2003Date of Patent: January 17, 2006Assignee: Hewlett-Packard Development Company, L.P.Inventor: Arthur R. Piehl
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Patent number: 6980346Abstract: A method and apparatus includes receiving light at an intensity modulator. Subsequently, the light is received at an intensity-color modulator that includes at least one Fabry-Perot filter having a tunable optical property.Type: GrantFiled: September 15, 2004Date of Patent: December 27, 2005Assignee: Hewlett-Packard Development Company, L.P.Inventors: Michael Greer, Arthur R. Piehl