Patents Assigned to Tessera North America, Inc.
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Patent number: 7529446Abstract: An optical element may include a first diffractive structure having a radially symmetric amplitude function and a second diffractive structure having a phase function. The second diffractive structure may serve as a vortex lens. A system employing the optical element may include a light source and/or a detector.Type: GrantFiled: March 10, 2008Date of Patent: May 5, 2009Assignee: Tessera North America, Inc.Inventors: Alan D. Kathman, Charles S. Koehler, William H. Welch, Eric G. Johnson, Robert D. Tekolste
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Publication number: 20090009869Abstract: A sub-wavelength anti-reflective diffractive structure is incorporated with a base diffractive structure having a small period to form a high efficiency diffractive structure. In the high efficiency diffractive structure, the anti-reflective structure and/or the base diffractive structure are altered from their ideal solo structure to provide both the desired performance and minimize reflections.Type: ApplicationFiled: September 8, 2008Publication date: January 8, 2009Applicant: TESSERA NORTH AMERICA, INC., (FORMERLY DIGITAL OPTICS CORPORATION)Inventors: Robert TE KOLSTE, Michael R. FELDMAN
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Publication number: 20080310023Abstract: A diffractive optical element (DOE) corrector for use with three different wavelengths includes a first diffractive element on a first surface of a first material, the first diffractive element diffracting a first wavelength of the three wavelengths, while directing a majority of light of second and third wavelengths of the three wavelengths into a zero-th order, and a second diffractive element on a second surface of a second material, the second material being different from the first material, the second surface being different from and in an optical path of the first surface, the second diffractive element diffracting the second wavelength, while directing a majority of light of the first and third wavelengths into a zero-th order.Type: ApplicationFiled: August 4, 2008Publication date: December 18, 2008Applicant: TESSERA NORTH AMERICA, INC.Inventor: Michael R. Feldman
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Patent number: 7466729Abstract: A wavelength locker for use at more than one wavelength includes filters with different characteristics for a corresponding detector. The filters may be etalons having different free spectral ranges, e.g., having different apparent or real thicknesses. If more than three such filters are used outputting offset periodic signals, a reference detector may be eliminated and continuous operation over a wavelength range may be realized.Type: GrantFiled: July 25, 2006Date of Patent: December 16, 2008Assignee: Tessera North America, Inc.Inventors: Alan Kathman, John Barnett Hammond, Robert TeKolste, Alvaro Cruz Cabrera
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Patent number: 7466502Abstract: An optical assembly includes a first transparent substrate having first and second surfaces, a second transparent substrate having substantially parallel third and fourth surfaces, a reflective portion on the second transparent substrate, a plurality of filters between the first substrate and the reflective portion, the plurality of filters filtering light beams incident thereon, the plurality of filters and the reflective portion forming a bounce cavity within the second transparent substrate, a collimating lens for collimating light beams to be input to the bounce cavity, a tilt mechanism for introducing tilt to light beams input to the bounce cavity; an input port receiving light beams and an output port transmitting light beams. The tilt mechanism may be between the first and second substrate.Type: GrantFiled: December 7, 2005Date of Patent: December 16, 2008Assignee: Tessera North America, Inc.Inventors: James E. Morris, Hongtao Han, Adam Fedor, Robert TeKolste, Jay Mathews, Michael R. Feldman
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Patent number: 7463401Abstract: An integrated micro-optical system includes at least two wafers with at least two optical elements provided on respective surfaces of the at least two wafers, at least one of the two optical elements being a spherical lens. The resulting optical system presents a high numerical aperture. One of the optical elements may be a refractive element formed in a material having a high index of refraction.Type: GrantFiled: November 18, 2002Date of Patent: December 9, 2008Assignee: Tessera North America, Inc.Inventors: Michael R. Feldman, Alan D. Kathman, William H. Welch
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Publication number: 20080285965Abstract: A thin camera having sub-pixel resolution includes an array of micro-cameras. Each micro-camera includes a lens, a plurality of sensors of size p, and a plurality of macro-pixels of size d having a feature of size q. The feature size q smaller than p and provides a resolution for the micro-camera greater than p. The smallest feature in the micro-cameras determines the resolution of the thin camera. Each macro-pixel may have any array of m features of size q, where q=d/m. Additional micro-cameras may be included to increase power.Type: ApplicationFiled: July 28, 2008Publication date: November 20, 2008Applicant: TESSERA NORTH AMERICA, INC.Inventors: MICHAEL R. FELDMAN, Robert Te Kolste
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Patent number: 7453575Abstract: A spectrometer for use with a desired wavelength range includes an array of filters. Each filter outputs at least two non-contiguous wavelength peaks within the desired wavelength range. The array of filters is spectrally diverse over the desired wavelength range, and each filter in the array of filters outputs a spectrum of a first resolution. An array of detectors has a detector for receiving an output of a corresponding filter. A processor receives signals from each detector, and outputs a reconstructed spectrum having a second resolution, the second resolution being higher than any of the first resolution of each filter.Type: GrantFiled: March 19, 2007Date of Patent: November 18, 2008Assignee: Tessera North America, Inc.Inventors: Robert D. Te Kolste, Alan D. Kathman
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Patent number: 7422842Abstract: A sub-wavelength anti-reflective diffractive structure is incorporated with a base diffractive structure having a small period to form a high efficiency diffractive structure. In the high efficiency diffractive structure, the anti-reflective structure and/or the base diffractive structure are altered from their ideal solo structure to provide both the desired performance and minimize reflections.Type: GrantFiled: March 29, 2006Date of Patent: September 9, 2008Assignee: Tessera North America, Inc.Inventors: Robert Te Kolste, Michael R. Feldman
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Patent number: 7408724Abstract: A diffractive optical element (DOE) corrector for use with three different wavelengths includes a first diffractive element on a first surface of a first material, the first diffractive element diffracting a first wavelength of the three wavelengths, while directing a majority of light of second and third wavelengths of the three wavelengths into a zero-th order, and a second diffractive element on a second surface of a second material, the second material being different from the first material, the second surface being different from and in an optical path of the first surface, the second diffractive element diffracting the second wavelength, while directing a majority of light of the first and third wavelengths into a zero-th order.Type: GrantFiled: December 29, 2006Date of Patent: August 5, 2008Assignee: Tessera North America, Inc.Inventor: Michael R. Feldman
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Patent number: 7405761Abstract: A thin camera having sub-pixel resolution includes an array of micro-cameras. Each micro-camera includes a lens, a plurality of sensors of size p, and a plurality of macro-pixels of size d having a feature of size q. The feature size q smaller than p and provides a resolution for the micro-camera greater than p. The smallest feature in the micro-cameras determines the resolution of the thin camera. Each macro-pixel may have any array of m features of size q, where q=d/m. Additional micro-cameras may be included to increase power.Type: GrantFiled: January 26, 2004Date of Patent: July 29, 2008Assignee: Tessera North America, Inc.Inventors: Michael R. Feldman, Robert Te Kolste
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Patent number: 7406224Abstract: A diffractive coupler coupling light between an opto-electronic element and a waveguide minimizes variation in coupling over an offset range, while providing good coupling efficiency. The offset range may be along the optical axis and/or radial. The diffractive coupler has a long depth of field and no best focus.Type: GrantFiled: August 25, 2005Date of Patent: July 29, 2008Assignee: Tessera North America, Inc.Inventors: James E Morris, Michael R Feldman
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Publication number: 20080159695Abstract: An optical element may include a first diffractive structure having a radially symmetric amplitude function and a second diffractive structure having a phase function. The second diffractive structure may serve as a vortex lens. A system employing the optical element may include a light source and/or a detector.Type: ApplicationFiled: March 10, 2008Publication date: July 3, 2008Applicant: DIGITAL OPTICS CORPORATION (now TESSERA NORTH AMERICA, INC.)Inventors: Alan D. Kathman, Charles S. Koehler, William H. Welch, Eric G. Johnson, Robert D. Tekolste
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Patent number: 7375315Abstract: An optical transceiver includes at least one light source and at least one detector mounted on the same surface of the same substrate. The detector is to receive light from other than a light source on the surface. At least one of the light source and the detector is mounted on the surface. An optics block having optical elements for each light source and detectors is attached via a vertical spacer to the substrate. Electrical interconnections for the light source and the detector are accessible from the same surface of the substrate with the optics block attached thereto. One of the light source and the detector may be monolithically integrated into the substrate.Type: GrantFiled: May 12, 2005Date of Patent: May 20, 2008Assignee: Tessera North America, Inc.Inventors: Michael R. Feldman, James E. Morris
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Patent number: 7343069Abstract: An optical element may include a first diffractive structure having a radially symmetric amplitude function and a second diffractive structure having a phase function. The second diffractive structure may serve as a vortex lens. A system employing the optical element may include a light source and/or a detector.Type: GrantFiled: May 18, 2007Date of Patent: March 11, 2008Assignee: Tessera North America, Inc.Inventors: Alan D. Kathman, Charles S. Koehler, William H. Welch, Eric G. Johnson, Robert D. Tekolste