Patents by Inventor Martin F. Fay
Martin F. Fay 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: 9958254Abstract: Calibrating a scanning interferometry imaging system includes: configuring the scanning interferometry imaging system for operation with an interference objective using light having a narrowband wavelength spectrum; using the scanning interferometry imaging system to direct measurement light and reference light along different paths and to overlap the measurement and reference light on a detector, the measurement and reference light having the narrowband wavelength spectrum; scanning an optical path length difference between the measurement light and the reference light at the detector while acquiring intensity data using the detector, the detector acquiring the intensity data at a frame rate and the scanning being performed at a scan speed; determining information about the scan speed based on the acquired intensity data, geometric information about the scanning interferometry imaging system, and the narrowband wavelength spectrum; and calibrating the scanning interferometry imaging system based on the inforType: GrantFiled: August 11, 2015Date of Patent: May 1, 2018Assignee: Zygo CorporationInventors: Peter J. de Groot, Jake Beverage, Xavier Colonna de Lega, Martin F. Fay
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Patent number: 9658129Abstract: A method for determining information about a transparent optical element including a lens portion and a plane parallel portion, the lens portion having at least one curved surface and the plane parallel portion having opposing first and second surfaces, includes: directing measurement light to the transparent optical element; detecting measurement light reflected from at least one location on the first surface of the plane parallel portion; detecting measurement light reflected from the second surface of the plane parallel portion at a location corresponding to the at least one location on the first surface; determining, based on the detected light, information about the plane parallel portion; and evaluating the transparent optical element based on the information about the plane parallel portion.Type: GrantFiled: August 13, 2015Date of Patent: May 23, 2017Assignee: Zygo CorporationInventors: Xavier Colonna de Lega, Martin F. Fay, Peter J. de Groot
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Patent number: 9599534Abstract: A method for determining information about an object including a curved portion and a planar portion, the curved portion having a first curved surface having an apex and defining an axis of the object, includes: directing measurement light to the object; detecting measurement light reflected from the first curved surface of the curved portion; detecting measurement light reflected from at least one other surface of the object; and determining, based on the detected light, information about the apex of the first curved surface of the curved portion.Type: GrantFiled: August 13, 2015Date of Patent: March 21, 2017Assignee: Zygo CorporationInventors: Martin F. Fay, Xavier Colonna de Lega, Peter J. de Groot
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Publication number: 20160047645Abstract: Calibrating a scanning interferometry imaging system includes: configuring the scanning interferometry imaging system for operation with an interference objective using light having a narrowband wavelength spectrum; using the scanning interferometry imaging system to direct measurement light and reference light along different paths and to overlap the measurement and reference light on a detector, the measurement and reference light having the narrowband wavelength spectrum; scanning an optical path length difference between the measurement light and the reference light at the detector while acquiring intensity data using the detector, the detector acquiring the intensity data at a frame rate and the scanning being performed at a scan speed; determining information about the scan speed based on the acquired intensity data, geometric information about the scanning interferometry imaging system, and the narrowband wavelength spectrum; and calibrating the scanning interferometry imaging system based on the inforType: ApplicationFiled: August 11, 2015Publication date: February 18, 2016Inventors: Peter J. de Groot, Jake Beverage, Xavier Colonna de Lega, Martin F. Fay
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Publication number: 20160047712Abstract: A method for determining information about a transparent optical element including a lens portion and a plane parallel portion, the lens portion having at least one curved surface and the plane parallel portion having opposing first and second surfaces, includes: directing measurement light to the transparent optical element; detecting measurement light reflected from at least one location on the first surface of the plane parallel portion; detecting measurement light reflected from the second surface of the plane parallel portion at a location corresponding to the at least one location on the first surface; determining, based on the detected light, information about the plane parallel portion; and evaluating the transparent optical element based on the information about the plane parallel portion.Type: ApplicationFiled: August 13, 2015Publication date: February 18, 2016Inventors: Xavier Colonna de Lega, Martin F. Fay, Peter J. de Groot
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Publication number: 20160047711Abstract: A method for determining information about an object including a curved portion and a planar portion, the curved portion having a first curved surface having an apex and defining an axis of the object, includes: directing measurement light to the object; detecting measurement light reflected from the first curved surface of the curved portion; detecting measurement light reflected from at least one other surface of the object; and determining, based on the detected light, information about the apex of the first curved surface of the curved portion.Type: ApplicationFiled: August 13, 2015Publication date: February 18, 2016Inventors: Martin F. Fay, Xavier Colonna de Lega, Peter J. de Groot
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Patent number: 8311377Abstract: Optical gratings that perform a number of functions at various wavelengths are formed by various methods that preserve spectral information within a wavelength band, the functions including: coupling radiation from one waveguide (7a3) to another (7a2), controllable gratings that operate on different wavelengths in response to external control signals.Type: GrantFiled: September 19, 2011Date of Patent: November 13, 2012Assignee: Brown University Research FoundationInventors: Daniel Levner, Martin F. Fay, Jingming Xu
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Publication number: 20120033217Abstract: Optical gratings that perform a number of functions at various wavelengths are formed by various methods that preserve spectral information within a wavelength band, the functions including: coupling radiation from one waveguide (7a3) to another (7a2), controllable gratings that operate on different wavelengths in response to external control signals.Type: ApplicationFiled: September 19, 2011Publication date: February 9, 2012Applicant: Brown University Research FoundationInventors: Daniel LEVNER, Martin F. FAY, Jingming XU
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Patent number: 8041163Abstract: Optical gratings that perform a number of functions at various wavelengths are formed by various methods that preserve spectral information within a wavelength band, the functions including: coupling radiation from one waveguide to another, controllable gratings that operate on different wavelengths in response to external control signals.Type: GrantFiled: February 19, 2009Date of Patent: October 18, 2011Assignee: Brown University Research FoundationInventors: Daniel Levner, Martin F. Fay, Jingming Xu
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Patent number: 7693370Abstract: An optical component including at least one optical supergrating is provided. The optical supergrating includes a quantized refractive index profile adapted to exhibit a finite plurality of refractive indexes; which in turn are adapted to generate a reflectance spectrum in at least one spectral band corresponding to a Fourier transformed analog refractive index profile.Type: GrantFiled: December 20, 2007Date of Patent: April 6, 2010Assignee: Brown University Research FoundationInventors: Daniel Levner, Martin F. Fay
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Publication number: 20090180736Abstract: Optical gratings that perform a number of functions at various wavelengths are formed by various methods that preserve spectral information within a wavelength band, the functions including: coupling radiation from one wavelength to another, controllable gratings that operate on different wavelengths in response to external control signals.Type: ApplicationFiled: February 19, 2009Publication date: July 16, 2009Applicant: Brown University Research FoundationInventors: Daniel Levner, Martin F. Fay, Jingming Xu
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Patent number: 7496257Abstract: Optical gratings that perform a number of functions at various wavelengths are formed by various methods that preserve spectral information within a wavelength band, the functions including: coupling radiation from one waveguide to another, controllable gratings that operate on different wavelengths in response to external control signals.Type: GrantFiled: January 9, 2008Date of Patent: February 24, 2009Assignee: Brown University Research FoundationInventors: Daniel Levner, Martin F. Fay, Jingming Xu
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Patent number: 7471859Abstract: An optical waveguide has a surface. An array of separately actuated bodies is disposed proximal to the exposed surface, and an actuator separately actuates at least some of the bodies to change a spectral characteristic of a wave propagating through the waveguide. Preferably, the bodies are metal striplines, an electro-optical material is disposed between the striplines and the exposed surface, and the actuator is a CMOS chip that imposes a voltage to some or all of the lines. The voltage changes the refractive index at the interface with the surface, changing an index of refraction profile of the waveguide and effectively imposing a grating. Alternatively, the bodies are micro-beams and the actuator, also controlled by a CMOS chip, separately moves each micro-beam into and out of proximity to the surface. The grating is programmable via the CMOS chip.Type: GrantFiled: August 15, 2007Date of Patent: December 30, 2008Assignee: Brown University Research FoundationInventors: Daniel Levner, Martin F. Fay, Jonathan C. Bloch, Jeffrey Weiss
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Patent number: 7373045Abstract: An optical component including at least one optical supergrating is provided. The optical supergrating includes a quantized refractive index profile adapted to exhibit a finite plurality of refractive indexes; which in turn are adapted to generate a reflectance spectrum in at least one spectral band corresponding to a Fourier transformed analog refractive index profile.Type: GrantFiled: July 3, 2002Date of Patent: May 13, 2008Assignee: Brown University Research FoundationInventors: Daniel Levner, Martin F. Fay
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Patent number: 7356224Abstract: Optical gratings that perform a number of functions at various wavelengths are formed by various methods that preserve spectral information within a wavelength band, the functions including: coupling radiation from one waveguide to another, controllable gratings that operate on different wavelengths in response to external control signals.Type: GrantFiled: June 27, 2003Date of Patent: April 8, 2008Assignee: Brown University Research FoundationInventors: Daniel Levner, Martin F. Fay, Jingming Xu
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Patent number: 7263258Abstract: An optical waveguide has a surface. An array of separately actuated bodies is disposed proximal to the exposed surface, and an actuator separately actuates at least some of the bodies to change a spectral characteristic of a wave propagating through the waveguide. Preferably, the bodies are metal striplines, an electro-optical material is disposed between the striplines and the exposed surface, and the actuator is a CMOS chip that imposes a voltage to some or all of the lines. The voltage changes the refractive index at the interface with the surface, changing an index of refraction profile of the waveguide and effectively imposing a grating. Alternatively, the bodies are micro-beams and the actuator, also controlled by a CMOS chip, separately moves each micro-beam into and out of proximity to the surface. The grating is programmable via the CMOS chip.Type: GrantFiled: September 24, 2004Date of Patent: August 28, 2007Assignee: Brown University Research FoundationInventors: Daniel Levner, Martin F. Fay, Jonathan C. Bloch, Jeffrey Weiss
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Patent number: 6657786Abstract: The present invention relates to a method for synthesizing supergratings using Fourier analysis. The method divides the synthesis process into two stages: synthesis of an “analog” grating profile, followed by a quantization step. The method provides a generalized procedure for analog synthesis by drawing on the Fourier approximation and on finite-impulse-response (FIR) filter design theory, while it interprets the simple threshold quantization as a “zeroth order” Delta-Sigma Modulator, which it improves.Type: GrantFiled: May 13, 2002Date of Patent: December 2, 2003Assignee: Digital LightCircuits, Inc.Inventors: Daniel Levner, Martin F. Fay, Jingming Xu
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Publication number: 20030007733Abstract: An optical component including at least one optical supergrating is provided. The optical supergrating includes a quantized refractive index profile adapted to exhibit a finite plurality of refractive indexes; which in turn are adapted to generate a reflectance spectrum in at least one spectral band corresponding to a Fourier transformed analog refractive index profile.Type: ApplicationFiled: July 3, 2002Publication date: January 9, 2003Inventors: Daniel Levner, Martin F. Fay
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Publication number: 20020154410Abstract: The present invention relates to a method for synthesizing supergratings using Fourier analysis. The method divides the synthesis process into two stages: synthesis of an “analog” grating profile, followed by a quantization step. The method provides a generalized procedure for analog synthesis by drawing on the Fourier approximation and on finite-impulse-response (FIR) filter design theory, while it interprets the simple threshold quantization as a “zeroth order” Delta-Sigma Modulator, which it improves.Type: ApplicationFiled: May 13, 2002Publication date: October 24, 2002Inventors: Daniel Levner, Martin F. Fay, Jingming Xu
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Patent number: 6415081Abstract: The present invention relates to a method for synthesizing supergratings using Fourier analysis. The method divides the synthesis process into two stages: synthesis of an “analog” grating profile, followed by a quantization step. The method provides a generalized procedure for analog synthesis by drawing on the Fourier approximation and on finite-inpulse-response (FIR) filter design theory, while it interprets the simple threshold quantization as a “zeroth order” Delta-Sigma Modulator, which it improves.Type: GrantFiled: August 4, 2000Date of Patent: July 2, 2002Inventors: Daniel Levner, Martin F. Fay, Jingming Xu