Patents by Inventor Joshua Monroe Cobb
Joshua Monroe Cobb 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: 8283554Abstract: An apparatus for obtaining radiant energy has first and second photovoltaic receivers. A primary curved reflective surface is disposed to reflect incident polychromatic radiation toward a first focal plane. A spectral separator is disposed between the first focal plane and the primary curved reflective surface. The spectral separator has a dichroic separating surface, convex with respect to the incident reflected polychromatic radiation and treated to reflect a first spectral band toward the first photovoltaic receiver and to transmit reflected polychromatic radiation outside the first spectral band. The spectral separator also has a curved separator reflective surface, convex with respect to the light transmitted through the dichroic separating surface and treated to reflect at least a portion of the light transmitted through the dichroic separating surface toward the second photovoltaic receiver.Type: GrantFiled: November 29, 2006Date of Patent: October 9, 2012Assignee: Corning IncorporatedInventors: John H Bruning, Joshua Monroe Cobb, Paul Francis Michaloski
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Publication number: 20120154819Abstract: A Fizeau interferometer incorporates an off-axis paraboloidal reflector that forms virtual images of reference and test surfaces and a camera lens that converts the virtual images into real images on a camera detector surface. The camera detector surface is arranged together with the camera lens to accommodate tilting of the virtual images by the off-axis paraboloidal reflector.Type: ApplicationFiled: December 6, 2011Publication date: June 21, 2012Inventors: Joshua Monroe Cobb, Thomas James Dunn, John Weston Frankovich
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Patent number: 8115904Abstract: An optical system for producing a pattern of focused spots, such as a maskless lithographic projection system, includes an illuminator, a pattern generator, and an imager. The illuminator includes a light source for generating a light beam, a homogenizer for evenly dispersing light within the light beam, and a condenser for coupling the light source to the homogenizer. The pattern generator has individually addressable elements illuminated by the light beam from the illuminator. The imager images the addressable elements of the pattern generator onto corresponding focusing elements for forming focused spots that are conjugate to aperture stops in both the imager and the illuminator. The illuminator underfills the imager aperture stop for reducing the size of the focused spots. The condenser underfills the illuminator aperture stop for further controlling the size and shape of the focused spots.Type: GrantFiled: May 26, 2009Date of Patent: February 14, 2012Assignee: Corning IncorporatedInventors: Joshua Monroe Cobb, Paul Francis Michaloski
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Publication number: 20110205501Abstract: A color combining apparatus has first, second, and third color channels, each color channel having a light source that is energizable to direct light of a corresponding first, second, or third wavelength band, respectively, toward a color combining element. The color combining element is a single piece of a solid, transparent material having at least first and second flat coated surfaces that are noncontiguous. The first coated surface is treated to reflect incident light of the first wavelength band onto an optical axis and to transmit incident light of the second and third wavelength bands. The second coated surface is treated to reflect incident light of the second wavelength band and to transmit incident light of the third wavelength band.Type: ApplicationFiled: February 25, 2010Publication date: August 25, 2011Inventor: Joshua Monroe Cobb
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Publication number: 20110181840Abstract: An apparatus for forming a color image has at least a first, a second, and a third illumination source, each illumination source energizable to provide continuous illumination of a first, a second, or a third wavelength band, respectively, to an optical multiplexer. The optical multiplexer is actuable to cyclically switch received light from each one of the illumination sources, in turn, to each one of at least a first, a second, and a third projector channel in a repeated sequence. The first projector channel connects to a first projector apparatus, the second projector channel connects to a second projector apparatus, and the third projector channel connects to a third projector apparatus. Each projector apparatus has a light modulator that is energizable to form an image from the light of the first, second, or third wavelength band that is cyclically switched onto its projector channel from the optical multiplexer.Type: ApplicationFiled: December 20, 2010Publication date: July 28, 2011Inventor: Joshua Monroe Cobb
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Publication number: 20100188723Abstract: An apparatus for providing a modulated pulsed radiation beam (20) has a radiation source (16) for providing a pulsed radiation beam (10) at a constant pulse repetition frequency and a number of beam intensity modulators (18a-18e). A beam-deflecting element (12) in the path of the pulsed radiation beam and rotatable about an axis redirects the pulsed radiation beam cyclically towards each of the plurality of beam intensity modulators in turn. A beam-recombining element rotatable about the axis in synchronization with the beam-deflecting element combines modulated light, from each of the beam intensity modulators in order to form the modulated pulsed radiation beam at the constant pulse repetition frequency. At least one beam-pointing correction apparatus optically conjugates the beam-deflecting element and the beam recombining element at least one rotational position about the axis.Type: ApplicationFiled: May 29, 2008Publication date: July 29, 2010Inventors: Joshua Monroe Cobb, Paul G. Dewa, Justin Kreuzer
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Patent number: 7741557Abstract: An apparatus for obtaining energy from a polychromatic radiant energy source has a light concentrator for concentrating and redirecting incident radiant energy, having an optical axis, and a spectral separator disposed along the optical axis, apart from the light concentrator and in the path of concentrated, redirected radiant energy. The spectral separator has a first planar surface treated to reflect a first spectral band of light toward a first focal region and to transmit a second spectral band and a second planar surface spaced apart from the first planar surface and oblique with respect to the first planar surface. The second planar surface is treated to reflect the second spectral band back through the first planar surface and toward a second focal region spaced apart from the first focal region. First and second light receivers are disposed nearest each respective focal region for receiving the first and second spectral bands.Type: GrantFiled: August 3, 2006Date of Patent: June 22, 2010Assignee: Corning IncorporatedInventors: Joshua Monroe Cobb, John H Bruning
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Patent number: 7706420Abstract: An apparatus for providing a pulsed radiation beam has a radiation source providing a pulsed radiation beam at a constant pulse repetition frequency. A beam deflector in the path of the pulsed radiation beam is actuable to redirect the pulsed radiation beam cyclically towards each of a plurality of beam intensity modulators in turn. A beam recombiner combines modulated light from each of the plurality of beam intensity modulators in order to form the modulated pulsed radiation beam at the constant pulse repetition frequency.Type: GrantFiled: November 29, 2006Date of Patent: April 27, 2010Assignee: Corning IncorporatedInventors: Joshua Monroe Cobb, Paul G Dewa
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Publication number: 20090296064Abstract: An optical system for producing a pattern of focused spots, such as a maskless lithographic projection system, includes an illuminator, a pattern generator, and an imager. The illuminator includes a light source for generating a light beam, a homogenizer for evenly dispersing light within the light beam, and a condenser for coupling the light source to the homogenizer. The pattern generator has individually addressable elements illuminated by the light beam from the illuminator. The imager images the addressable elements of the pattern generator onto corresponding focusing elements for forming focused spots that are conjugate to aperture stops in both the imager and the illuminator. The illuminator underfills the imager aperture stop for reducing the size of the focused spots. The condenser underfills the illuminator aperture stop for further controlling the size and shape of the focused spots.Type: ApplicationFiled: May 26, 2009Publication date: December 3, 2009Inventors: Joshua Monroe Cobb, Paul Francis Michaloski
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Patent number: 7620080Abstract: A light pulse conditioning apparatus has at least first and second curved reflective surfaces that share a common focus and a light-redirecting element disposed between the first and second curved reflective surfaces to redirect at least a portion of an incident light beam toward the second curved reflective surface as a delayed beam portion. A beam-shifting compensating element is disposed between the first curved reflective surface and the light-redirecting element and in the path of the delayed beam portion, for shifting the optical path of the delayed beam portion as it returns toward the light-redirecting element.Type: GrantFiled: August 23, 2007Date of Patent: November 17, 2009Assignee: Corning IncorporatedInventors: Joshua Monroe Cobb, Paul G Dewa
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Publication number: 20090052480Abstract: A light pulse conditioning apparatus has at least first and second curved reflective surfaces that share a common focus and a light-redirecting element disposed between the first and second curved reflective surfaces to redirect at least a portion of an incident light beam toward the second curved reflective surface as a delayed beam portion. A beam-shifting compensating element is disposed between the first curved reflective surface and the light-redirecting element and in the path of the delayed beam portion, for shifting the optical path of the delayed beam portion as it returns toward the light-redirecting element.Type: ApplicationFiled: August 23, 2007Publication date: February 26, 2009Inventors: Joshua Monroe Cobb, Paul G. Dewa
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Publication number: 20080204665Abstract: An illumination apparatus has first and second optical condenser systems sharing a common aperture. The first optical condenser system has a first solid-state light source having a first spectral band and a first curved surface spaced apart from the first solid-state light source and treated to reflect the first spectral band along a first optical path to exit at the common aperture and to pass light outside the first spectral band. The second optical condenser system has a second solid-state light source having a second spectral band and a second curved surface disposed behind the first curved surface with respect to the first and second light sources and treated to reflect the second spectral band along a second optical path to exit at the common aperture.Type: ApplicationFiled: December 12, 2007Publication date: August 28, 2008Inventor: Joshua Monroe Cobb
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Publication number: 20080055579Abstract: An apparatus for providing a pulsed radiation beam has a radiation source providing a pulsed radiation beam at a constant pulse repetition frequency. A beam deflector in the path of the pulsed radiation beam is actuable to redirect the pulsed radiation beam cyclically towards each of a plurality of beam intensity modulators in turn. A beam recombiner combines modulated light from each of the plurality of beam intensity modulators in order to form the modulated pulsed radiation beam at the constant pulse repetition frequency.Type: ApplicationFiled: November 29, 2006Publication date: March 6, 2008Inventors: Joshua Monroe Cobb, Paul G. Dewa
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Patent number: 7330314Abstract: An illumination apparatus has first and second optical condenser systems sharing a common aperture. The first optical condenser system has a first solid-state light source having a first spectral band and a first curved surface spaced apart from the first solid-state light source and treated to reflect the first spectral band along a first optical path to exit at the common aperture and to pass light outside the first spectral band. The second optical condenser system has a second solid-state light source having a second spectral band and a second curved surface disposed behind the first curved surface with respect to the first and second light sources and treated to reflect the second spectral band along a second optical path to exit at the common aperture.Type: GrantFiled: February 28, 2007Date of Patent: February 12, 2008Assignee: Corning IncorporatedInventor: Joshua Monroe Cobb
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Publication number: 20070137690Abstract: An apparatus for obtaining radiant energy has first and second photovoltaic receivers. A primary curved reflective surface is disposed to reflect incident polychromatic radiation toward a first focal plane. A spectral separator is disposed between the first focal plane and the primary curved reflective surface. The spectral separator has a dichroic separating surface, convex with respect to the incident reflected polychromatic radiation and treated to reflect a first spectral band toward the first photovoltaic receiver and to transmit reflected polychromatic radiation outside the first spectral band. The spectral separator also has a curved separator reflective surface, convex with respect to the light transmitted through the dichroic separating surface and treated to reflect at least a portion of the light transmitted through the dichroic separating surface toward the second photovoltaic receiver.Type: ApplicationFiled: November 29, 2006Publication date: June 21, 2007Inventors: John H. Bruning, Joshua Monroe Cobb, Paul Francis Michaloski
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Patent number: 5926311Abstract: Method and apparatus for illuminating a transparent material for identifying individual features in the material having similar refractive indices, without using a phase-contrast microscope, by illuminating the material by light directed at an angle to a reflective surface which directs the light through the material to a viewing device such as a microscope.Type: GrantFiled: February 28, 1997Date of Patent: July 20, 1999Assignee: International Business Machines CorporationInventors: Joshua Monroe Cobb, Robert Francis Florence, Jr., Franz X. Topolovec, Uldis Artis Ziemins
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Patent number: 5828481Abstract: A Mid-Objective scanner system for correcting astigmatism, bow distortion and field curvature including a tilted lens or a toric lens for producing an opposite amount of astigmatism to correct astigmatism, a scanning mechanism and a concave cylindrical mirror for directing the scanned beam onto to a workpiece wherein the concave cylindrical mirror has a radius of curvature that corrects the field of curvature in the image plane of the workpiece and thereby enables the scanner system to correct astigmatism, bow distortion and field curvature.Type: GrantFiled: June 5, 1995Date of Patent: October 27, 1998Assignee: International Business Machines CorporationInventors: Joshua Monroe Cobb, Candace Joy Flattery-Freedenberg, Franz X. Topolovec, Uldis Artis Ziemins
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Patent number: 5754328Abstract: A method for correcting astigmatism, bow distortion and field curvature using a Mid-Objective scanner system wherein the system includes a tilted lens or a toric lens for producing an opposite amount of astigmatism to correct astigmatism, a scanning mechanism and a concave cylindrical mirror for directing the scanned beam onto to a workpiece wherein the concave cylindrical mirror has a radius of curvature that corrects the field of curvature in the image plane of the workpiece and thereby enables the scanner system to correct astigmatism, bow distortion and field curvature.Type: GrantFiled: June 7, 1995Date of Patent: May 19, 1998Assignee: International Business Machines CorporationInventors: Joshua Monroe Cobb, Candace Joy Flattery-Freedenberg, Franz X. Topolovec, Uldis Artis Ziemins
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Patent number: 5648005Abstract: The present invention relates generally to a new apparatus and method for providing a non-uniform light source. More particularly, the invention encompasses an apparatus that uses a modified quartz plate to provide a non-uniform light source. A method for such a non-uniform light source using a modified quartz plate is also disclosed.Type: GrantFiled: March 25, 1996Date of Patent: July 15, 1997Assignee: International Business Machines CorporationInventors: Joshua Monroe Cobb, Peter Kevin Parker