Patents by Inventor Donald G. Bruns
Donald G. Bruns 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: 8034262Abstract: An optical element comprising: a first monomer polymerized while in the presence of a second monomer to form a first polymer intermixed with the second monomer, the first polymer having a spatially varying degree of cure that provides a predetermined refractive index profile; and the second monomer polymerized in the presence of the first polymer to form a second polymer intermixed with the first polymer, the second polymer stabilizing the refractive index profile.Type: GrantFiled: August 10, 2010Date of Patent: October 11, 2011Assignee: Ophthonix, Inc.Inventors: Shui T. Lai, Donald G. Bruns, Lawrence H. Sverdrup, Gomaa Abdel-Sadek
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Publication number: 20100302504Abstract: An optical element comprising: a first monomer polymerized while in the presence of a second monomer to form a first polymer intermixed with the second monomer, the first polymer having a spatially varying degree of cure that provides a predetermined refractive index profile; and the second monomer polymerized in the presence of the first polymer to form a second polymer intermixed with the first polymer, the second polymer stabilizing the refractive index profile.Type: ApplicationFiled: August 10, 2010Publication date: December 2, 2010Applicant: Ophthonix, Inc.Inventors: Shui T. LAI, Donald G. Bruns, Lawrence H. Sverdrup, Gomaa G. Abdel-Sadek
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Patent number: 7772297Abstract: A method for making an optical element comprises polymerizing a first monomer to form a first polymer, the first polymer having a spatially varying degree of cure that provides a predetermined refractive index profile; and polymerizing a second monomer in the presence of the first polymer to form a second polymer intermixed with the first polymer, the second polymer stabilizing the first polymer and the refractive index profile.Type: GrantFiled: January 28, 2009Date of Patent: August 10, 2010Assignee: Ophthonix, Inc.Inventors: Shui T. Lai, Donald G. Bruns, Lawrence H. Sverdrup, Gomaa G. Abdel-Sadek
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Patent number: 7695134Abstract: The wavefront aberrator is applicable to correct aberrations of the human eye. In one embodiment, the aberrator device comprises a pair of transparent lenses separated by a layer of curable resin comprising monomers and polymerization initiators. By controlling the extent of its curing, this monomer layer provides an adjustable index of refraction profile across the layer. Curing of the resin may be made by exposure to light, such as ultraviolet light. By controlling the extent of light exposure across the surface of the curable resin, for example, a particular and unique refractive index profile can be produced.Type: GrantFiled: October 9, 2007Date of Patent: April 13, 2010Assignee: Ophthonix, Inc.Inventors: Andreas W. Dreher, Shui T. Lai, Donald G. Bruns
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Publication number: 20090137696Abstract: A method for making an optical element comprises polymerizing a first monomer to form a first polymer, the first polymer having a spatially varying degree of cure that provides a predetermined refractive index profile; and polymerizing a second monomer in the presence of the first polymer to form a second polymer intermixed with the first polymer, the second polymer stabilizing the first polymer and the refractive index profile.Type: ApplicationFiled: January 28, 2009Publication date: May 28, 2009Applicant: Ophthonix, Inc.Inventors: SHUI T. LAI, Donald G. Bruns, Lawrence H. Sverdrup, Gomaa G. Abdel-Sadek
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Publication number: 20080252845Abstract: The wavefront aberrator is applicable to correct aberrations of the human eye. In one embodiment, the aberrator device comprises a pair of transparent lenses separated by a layer of curable resin comprising monomers and polymerization initiators. By controlling the extent of its curing, this monomer layer provides an adjustable index of refraction profile across the layer. Curing of the resin may be made by exposure to light, such as ultraviolet light. By controlling the extent of light exposure across the surface of the curable resin, for example, a particular and unique refractive index profile can be produced.Type: ApplicationFiled: October 9, 2007Publication date: October 16, 2008Inventors: Andreas W. DREHER, Shui T. LAI, Donald G. BRUNS
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Patent number: 7349804Abstract: An automatic celestial navigation system for navigating both night and day by observation of K-band or H-band infrared light from multiple stars. In a first set of preferred embodiments three relatively large aperture telescopes are rigidly mounted on a movable platform such as a ship or airplane with each telescope being directed at a substantially different portion of sky. Embodiments in this first set tend to be relatively large and heavy, such as about one cubic meter and about 60 pounds. In a second set of preferred embodiments one or more smaller aperture telescopes are pivotably mounted on a movable platform such as a ship, airplane or missile so that the telescope or telescopes can be pivoted to point toward specific regions of the sky. Embodiments of this second set are mechanically more complicated than those of the first set, but are much smaller and lighter and are especially useful for guidance of aircraft and missiles.Type: GrantFiled: May 31, 2005Date of Patent: March 25, 2008Assignee: Trex Enterprises Corp.Inventors: Mikhail Belenkii, Donald G. Bruns, Vincent A Rye, Timothy Brinkley
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Patent number: 7349803Abstract: An automatic celestial navigation system for navigating both night and day by observation of K-band or H-band infrared light from multiple stars. A preferred embodiment uses three telescopes with each of the three telescopes rigidly mounted with respect to each other and rigidly mounted on a movable platform such as a ship or airplane with each telescope being directed at a substantially different portion of sky. Telescope optics focuses, onto the pixel array of a sensor, H-band or K-band light from stars in the field of view of each telescope. The system also includes an inclinometer, an accurate timing device and a computer processor having access to cataloged infrared star charts.Type: GrantFiled: April 15, 2005Date of Patent: March 25, 2008Assignee: Trex Enterprises Corp.Inventors: Mikhail Belenkii, Donald G. Bruns, Vincent A Rye, Timothy Brinkley
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Patent number: 7293871Abstract: The wavefront aberrator is applicable to correct aberrations of the human eye. In one embodiment, the aberrator device comprises a pair of transparent lenses separated by a layer of curable resin comprising monomers and polymerization initiators. By controlling the extent of its curing, this monomer layer provides an adjustable index of refraction profile across the layer. Curing of the resin may be made by exposure to light, such as ultraviolet light. By controlling the extent of light exposure across the surface of the curable resin, for example, a particular and unique refractive index profile can be produced.Type: GrantFiled: August 12, 2002Date of Patent: November 13, 2007Assignee: Ophthonix, Inc.Inventors: Andreas W. Dreher, Shui T. Lai, Donald G. Bruns
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Patent number: 6989938Abstract: The wavefront aberrator of the present invention includes a pair of transparent windows, or plates, separated by a layer of monomers and polymerization initiator, including a broad class of epoxies. This monomer exhibits a variable index of refraction across the layer, resulting from controlling the extent of its curing. Curing of the epoxy may be made by exposure to light, such as ultraviolet light. The exposure to light may be varied across the surface of the epoxy to create a particular and unique refractive index profile.Type: GrantFiled: September 20, 2004Date of Patent: January 24, 2006Assignee: Ophthonix, Inc.Inventor: Donald G. Bruns
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Patent number: 6813082Abstract: The wavefront aberrator of the present invention includes a pair of transparent windows, or plates, separated by a layer of monomers and polymerization initiator, including a broad class of epoxies. This monomer exhibits a variable index of refraction across the layer, resulting from controlling the extent of its curing. Curing of the epoxy may be made by exposure to light, such as ultraviolet light. The exposure to light may be varied across the surface of the epoxy to create a particular and unique refractive index profile.Type: GrantFiled: June 4, 2001Date of Patent: November 2, 2004Assignee: Ophthonix, inc.Inventor: Donald G. Bruns
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Publication number: 20030003295Abstract: The wavefront aberrator is applicable to correct aberrations of the human eye. In one embodiment, the aberrator device comprises a pair of transparent lenses separated by a layer of curable resin comprising monomers and polymerization initiators. By controlling the extent of its curing, this monomer layer provides an adjustable index of refraction profile across the layer. Curing of the resin may be made by exposure to light, such as ultraviolet light. By controlling the extent of light exposure across the surface of the curable resin, for example, a particular and unique refractive index profile can be produced.Type: ApplicationFiled: August 12, 2002Publication date: January 2, 2003Inventors: Andreas W. Dreher, Shui T. Lai, Donald G. Bruns
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Publication number: 20020080464Abstract: The wavefront aberrator of the present invention includes a pair of transparent windows, or plates, separated by a layer of monomers and polymerization initiator, including a broad class of epoxies. This monomer exhibits a variable index of refraction across the layer, resulting from controlling the extent of its curing. Curing of the epoxy may be made by exposure to light, such as ultraviolet light. The exposure to light may be varied across the surface of the epoxy to create a particular and unique refractive index profile.Type: ApplicationFiled: June 4, 2001Publication date: June 27, 2002Inventor: Donald G. Bruns
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Patent number: 6293680Abstract: A deformable mirror assembly is provided employing a pressure differential across the mirror element to flex the mirror into a configuration. The configuration is determined by an array of positioning members, each having a fixed back end and a movable front end. The invention employs long-stroke electromagnet actuators with built-in position sensing.Type: GrantFiled: September 10, 1998Date of Patent: September 25, 2001Assignee: Thermotrex CorporationInventor: Donald G. Bruns
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Patent number: 6098485Abstract: A high resolution actuator is provided which can be used in extreme environments, e.g., at extremely low temperatures. The actuator uses electromagnetic forces to actuate levers which then cause rotation of a lead screw. The actuator uses very small gaps in the magnetic circuit to achieve a high force with a small input power.Type: GrantFiled: August 27, 1998Date of Patent: August 8, 2000Assignee: ThermoTrex CorporationInventor: Donald G. Bruns
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Patent number: 6040643Abstract: An "inch worm" type linear actuator in which high resolution is achieved by directly moving an actuator armature in small steps using thermal, piezoelectric, electromagnetic, or magnetostrictive armature translators. Sequential operation of paired electromagnet clamp assemblies and the armature translator provides a step-wise linear motion. When power is removed, the inventive mechanism prevents further motion of the armature. The preferred embodiment meets these requirements in a compact size having a relative long stroke that is suitable for cryogenic applications, such as moving a segment of a space telescope mirror.Type: GrantFiled: November 20, 1998Date of Patent: March 21, 2000Assignee: Thermotrex CorporationInventor: Donald G. Bruns
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Patent number: 4189133Abstract: A document stacking table is lowered in steps under electronic control as the documents accumulate. A predetermined number of documents are stacked, after which the table is lowered by a predetermined amount. An optical sensing arrangement is used to determine the effective top of the stack of documents within the limits of "light sensed" and the "absence of light". If light is sensed, the count is increased and the table lowered again; in the absence of light the count is decreased and the table is again lowered. Thus the stacking table will be lowered by a fixed amount to the level of least error.Type: GrantFiled: November 3, 1978Date of Patent: February 19, 1980Assignee: International Business Machines CorporationInventors: Fred V. Arrasmith, Donald G. Bruns, David G. Killam