Patents by Inventor Gregory G. Cappiello
Gregory G. Cappiello 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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Publication number: 20190258037Abstract: A beam expander apparatus includes a parabolic primary mirror that has a continuous surface. The continuous surface is configured to reflect, at least twice, a light beam. The parabolic primary mirror is further configured to deliver the light beam, in an expanded form, to a target object. The apparatus also includes a parabolic secondary mirror arranged with an orientation relative to the parabolic primary mirror. The parabolic secondary mirror has a continuous surface configured to reflect, at least twice, the light beam. The parabolic secondary mirror is further configured to receive the light beam via a port of the parabolic primary mirror.Type: ApplicationFiled: February 20, 2019Publication date: August 22, 2019Inventor: Gregory G. Cappiello
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Patent number: 10261297Abstract: A remote imaging apparatus, and corresponding method, includes a hyperbolic primary mirror that receives light from a remote object to be imaged. The primary mirror has a continuous surface that reflects, at least twice, the light from the remote object. The apparatus also includes a hyperbolic secondary mirror having a continuous surface that reflects, at least twice, the light from the remote object. The secondary mirror delivers the light to a field corrector via a port of the hyperbolic primary mirror, and the field corrector is configured to correct for an optical aberration of one or both of the hyperbolic primary and secondary mirrors. Embodiments can provide low distortion, small aspect ratios, and small form factors and moments of inertia for fleets satellite-based and other imaging systems.Type: GrantFiled: June 27, 2017Date of Patent: April 16, 2019Assignee: Massachusetts Institute of TechnologyInventor: Gregory G. Cappiello
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Publication number: 20180373005Abstract: A remote imaging apparatus, and corresponding method, includes a hyperbolic primary mirror that receives light from a remote object to be imaged. The primary mirror has a continuous surface that reflects, at least twice, the light from the remote object. The apparatus also includes a hyperbolic secondary mirror having a continuous surface that reflects, at least twice, the light from the remote object. The secondary mirror delivers the light to a field corrector via a port of the hyperbolic primary mirror, and the field corrector is configured to correct for an optical aberration of one or both of the hyperbolic primary and secondary mirrors. Embodiments can provide low distortion, small aspect ratios, and small form factors and moments of inertia for fleets satellite-based and other imaging systems.Type: ApplicationFiled: June 27, 2017Publication date: December 27, 2018Inventor: Gregory G. Cappiello
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Patent number: 8089425Abstract: Scanning beam display systems based on scanning light on a fluorescent screen. The screen can include fluorescent materials which emit visible light under excitation of the scanning light to form images with the emitted visible light. Multiple lasers can be used to simultaneously scan multiple laser beams to illuminate the screen for enhanced display brightness. For example, the multiple laser beams can illuminate one screen segment at a time and sequentially scan multiple screen segments to complete a full screen.Type: GrantFiled: August 24, 2006Date of Patent: January 3, 2012Assignee: Prysm, Inc.Inventors: Phillip H. Malyak, Gregory G. Cappiello, James T. McCann, John Uebbing, John M. Watson, Roger A. Hajjar
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Patent number: 7772579Abstract: Particle detection systems without knowledge of a location and velocity of a particle passing through a volume of space, are less efficient than if knowledge of the particle location is known. An embodiment of a particle position detection system capable of determining an exact location of a particle in a fluid stream is discussed. The detection system may employ a patterned illuminating beam, such that once a particle passes through the various portions of the patterned illuminating beam, a light scattering is produced. The light scattering defines a temporal profile that contains measurement information indicative of an exact particle location. However, knowledge of the exact particle location has several advantages. These advantages include correction of systematic particle measurement errors due to variability of the particle position within the sample volume, targeting of particles based on position, capture of particles based on position, reduced system energy consumption and reduced system complexity.Type: GrantFiled: May 18, 2007Date of Patent: August 10, 2010Assignee: Massachusetts Institute of TechnologyInventors: William D. Herzog, Antonio Sanchez-Rubio, Gregory G. Cappiello, Ronald H. Hoffeld, Shane M. Tysk, Vincenzo Daneu, Thomas H. Jeys
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Publication number: 20070206258Abstract: Scanning beam display systems based on scanning light on a fluorescent screen. The screen can include fluorescent materials which emit visible light under excitation of the scanning light to form images with the emitted visible light. Multiple lasers can be used to simultaneously scan multiple laser beams to illuminate the screen for enhanced display brightness. For example, the multiple laser beams can illuminate one screen segment at a time and sequentially scan multiple screen segments to complete a full screen.Type: ApplicationFiled: August 24, 2006Publication date: September 6, 2007Inventors: Phillip H. Malyak, Gregory G. Cappiello, James T. McCann, John Uebbing, John M. Watson, Roger A. Hajjar
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Patent number: 6859317Abstract: A diffraction grating for optical communication is disclosed. The diffraction grating includes a substrate and a reflective material adjacent the substrate, wherein one or more input optical signals incident the reflective material is diffracted into one or more output optical signals over a wavelength range of at least approximately 30 nm, within which the diffraction grating is substantially polarization insensitive.Type: GrantFiled: November 28, 2000Date of Patent: February 22, 2005Assignee: Confluent Photonics CorporationInventors: Gregory G. Cappiello, Mikhail N. Sokolskiy, Robert H. Dueck
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Patent number: 6844992Abstract: An opto-mechanical platform for supporting truncated optical elements having at least one substantially flat side surface is disclosed. In one particular exemplary embodiment, the opto-mechanical platform may be realized as an apparatus for supporting truncated optical elements having at least one substantially flat side surface. Such an apparatus may comprise a platform having a substantially flat surface area for supporting the substantially flat side surface of the truncated optical elements. Such an apparatus may also comprise at least one substantially vertical wall formed on at least a portion of the platform for providing mechanical rigidity to the platform.Type: GrantFiled: March 18, 2003Date of Patent: January 18, 2005Assignee: Confluent Photonics CorporationInventors: Thomas A. Schaefer, Gregory G. Cappiello, Ninghui Zhu, Kurt E. Abdelmaseh, Evgueni V. Babenko, William J. Hubbard, Kevin J. McIntyre, Brian J. McKeen, Paul Ouellette, Andrew Radl, Dick Rolfe
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Publication number: 20040196556Abstract: A diffraction grating and devices employing same are disclosed. In one particular exemplary embodiment, the present invention may be realized as a diffraction grating comprising a reflective material having a blazed surface with a blaze angle between about 33 degrees and about 41 degrees, and an optically transmissive material disposed adjacent the reflective material having an index of refraction (n), wherein the blazed surface of the reflective material has approximately (350±30)*n number of grooves per millimeter.Type: ApplicationFiled: February 5, 2004Publication date: October 7, 2004Inventor: Gregory G. Cappiello
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Patent number: 6731838Abstract: A wavelength division multiplexer/demultiplexer (WDM) for use in an optical network and in an optical performance monitor that minimizes increases in insertion losses over temperature variations has a structure for holding at least one optical component. A diffraction grating assembly having a substrate is held in relation to the at least one optical component by the structure. A lens assembly having a focal length is held in relation to the at least one optical component. The coefficient of thermal expansion of the lens assembly and structure are approximately equal. The grating assembly has an angular dispersion that changes with temperature and the product of the focal length and angular dispersion remains constant over temperature. The WDM further comprises a prism having a change in index of refraction with temperature that is approximately equal to a negative of a coefficient of thermal expansion of the substrate.Type: GrantFiled: November 28, 2000Date of Patent: May 4, 2004Assignee: Confluent Photonics CorporationInventors: Robert H. Dueck, Gregory G Cappiello
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Publication number: 20030179472Abstract: An opto-mechanical platform for supporting truncated optical elements having at least one substantially flat side surface is disclosed. In one particular exemplary embodiment, the opto-mechanical platform may be realized as an apparatus for supporting truncated optical elements having at least one substantially flat side surface. Such an apparatus may comprise a platform having a substantially flat surface area for supporting the substantially flat side surface of the truncated optical elements. Such an apparatus may also comprise at least one substantially vertical wall formed on at least a portion of the platform for providing mechanical rigidity to the platform.Type: ApplicationFiled: March 18, 2003Publication date: September 25, 2003Inventors: Thomas A. Schaefer, Gregory G. Cappiello, Ninghui Zhu, Kurt E. Abdelmaseh, Evgueni V. Babenko, William J. Hubbard, Kevin J. McIntyre, Brian J. McKeen, Paul Ouellette, Andrew Radl, Dick Rolfe
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Patent number: 6621958Abstract: A wavelength division multiplexer/demultiplexer (WDM) for use in an optical network has a structure for holding at least one optical component. A diffraction grating assembly having a substrate is held in relation to the at least one optical component by the structure. A lens assembly having a focal length is held in relation to the at least one optical component. The grating assembly has an angular dispersion that changes with temperature and the product of the focal length and angular dispersion remains constant over temperature.Type: GrantFiled: November 28, 2000Date of Patent: September 16, 2003Assignee: Confluent Photonics CorporationInventors: Robert H. Dueck, Gregory G. Cappiello
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Patent number: 6594415Abstract: Improved wavelength division multiplexing/demultiplexing devices are disclosed.Type: GrantFiled: July 13, 2001Date of Patent: July 15, 2003Assignee: Confluent Photonics CorporationInventors: Gregory G. Cappiello, Robert H. Dueck
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Patent number: 6577786Abstract: An optical performance monitoring device and corresponding diffraction grating are disclosed for utilization within a fiber optic communications network. The diffraction grating includes a substrate and reflective material adjacent the substrate, wherein the diffraction grating is substantially polarization insensitive over a wavelength range of approximately 30 nm.Type: GrantFiled: November 28, 2000Date of Patent: June 10, 2003Assignee: Digital Lightwave, Inc.Inventors: Gregory G. Cappiello, Michael Sussman, Mikhail N. Sokolskiy
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Patent number: 6570652Abstract: A device for monitoring wavelength division multiplexed optical signals for use in an optical network and in an optical performance monitor. A device has a structure for supporting components of the device. An optical component is supported at one end of the structure for transmitting the optical signals. A diffraction grating is supported at an opposing end of the structure for diffracting the optical signals from the optical component. An optical sensor is supported in relation to the diffraction grating by the structure for monitoring the optical signals. A telephoto lens assembly is supported by the structure and disposed between the optical sensor and the diffraction grating, the lens assembly having a focal length for focusing the optical signals in relation to the optical sensor. Thermal effects on the structure are balanced against thermal effects on the lens assembly. A prism is disposed between the lens assembly and diffraction grating.Type: GrantFiled: November 28, 2000Date of Patent: May 27, 2003Assignee: Digital Lightwave, Inc.Inventor: Gregory G. Cappiello
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Patent number: 6556297Abstract: A device for monitoring wavelength division multiplexed optical signals for use in an optical network and in an optical performance monitor. A device has a structure for supporting components of the device. An optical component is supported at one end of the structure for transmitting the optical signals. A diffraction grating is supported at an opposing end of the structure for diffracting the optical signals from the optical component. An optical sensor is supported in relation to the diffraction grating by the structure for monitoring the optical signals. A telephoto lens assembly is supported by the structure and disposed between the optical sensor and the diffraction grating, the lens assembly having a focal length for focusing the optical signals in relation to the optical sensor. Thermal effects on the structure are balanced against thermal effects on the lens assembly. A prism is disposed between the lens assembly and diffraction grating.Type: GrantFiled: November 28, 2000Date of Patent: April 29, 2003Assignee: Digital Lightwave, Inc.Inventor: Gregory G. Cappiello
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Patent number: 6415073Abstract: Improved wavelength division multiplexing/demultiplexing devices are disclosed. In the case of an improved wavelength division multiplexing device having a diffraction grating for combining a plurality of monochromatic optical beams into a multiplexed, polychromatic optical beam, the improvement comprises employing a plurality of patterned optical input components corresponding to the plurality of monochromatic optical beams, wherein each of the plurality of patterned optical input components introduces a first patterned phase delay into a corresponding one of the plurality of monochromatic optical. beams. The improvement also comprises employing a patterned optical output component for introducing a second patterned phase delay into the multiplexed, polychromatic optical beam, wherein the first patterned phase delay and the second patterned phase delay are added so as to reshape the passband of the improved wavelength division multiplexing device.Type: GrantFiled: April 10, 2000Date of Patent: July 2, 2002Assignee: LightChip, Inc.Inventors: Gregory G. Cappiello, Robert H. Dueck
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Patent number: 6294778Abstract: The invention features a flat field image printing apparatus. The printing apparatus includes: a light source responsive to an image modulated signal and producing a image modulated light beam; a beam deflector supported for rotary motion to deflect the image modulated light beam onto an image recording medium in response to the rotary motion; and a lens assembly configured to convert the deflected image modulated light beam into an achromatic focused beam spot which moves repeatedly in a first scan direction and over a range of scan angles to provide a highly resolved printed image across the recording medium. In other aspects, the invention features a high-speed printing apparatus employing multiple light sources, and an achromatic f-theta lens for use in such printing apparati.Type: GrantFiled: April 22, 1999Date of Patent: September 25, 2001Assignee: ECRM, Inc.Inventor: Gregory G. Cappiello
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Patent number: 6243184Abstract: A light scanner includes a beam deflector supported for rotary motion to deflect an incoming light beam into an image field in response to being rotationally aligned. A motor mechanically couples to rotate the deflector in and out of the rotational alignment. The beam deflector scans the image field with the deflected incoming light in response to being rotated. A gas permeable screen structure partially encloses a region adjacent the rotating beam deflector and reduces gas turbulence in the region of the deflector.Type: GrantFiled: October 9, 1998Date of Patent: June 5, 2001Assignee: ECRM, Inc.Inventors: Alan L. Weeks, Gregory G. Cappiello