Patents by Inventor Daniel P. Landry
Daniel P. Landry 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: 20240087527Abstract: An electronic device may have a display mounted in a housing. The display may have a pixel array that produces images. A display cover layer may overlap the pixel array. The display cover layer may have a planar central area surrounded by a peripheral edge area with a curved cross-sectional profile. From an on-axis viewing angle, an image on the pixel array is fully viewable through the planar central area and the peripheral edge area. From an off-axis viewing angle, the image is partly viewable through the peripheral edge area and not through the central area. To avoid an undesired color cast in the partly viewable image seen through the peripheral edge area of the display cover layer, the display may be provided with color cast compensation structures such as a guest-host liquid crystal layer that exhibits an anisotropic colored light absorption characteristic, a diffuser layer, and/or other optical structures.Type: ApplicationFiled: November 16, 2023Publication date: March 14, 2024Inventors: Sameer Pandya, Daniel J. Barrett, Erik G. de Jong, James P. Landry, David A. Doyle, Jean-Pierre S. Guillou, Jung Yun Seuh, Yi Qiao
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Publication number: 20100275807Abstract: A taggant for marking a target through the use of a carrier or a projectile loaded on a firing device and methods for fabricating the same are disclosed. The taggant including photoluminescent semiconductor nanocrystal(s) materials incorporated in a carrier or projectile. The photoluminescent semiconductor nanocrystal(s) materials may be encapsulated in a medium for facilitating marking of the target.Type: ApplicationFiled: February 15, 2008Publication date: November 4, 2010Inventors: Daniel P. Landry, Luis A. Sanchez, James C.M. Hayes, Eva M. Sackal
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Patent number: 7200302Abstract: An optical filter includes a first mirror, a cavity coupled to the first mirror, and a second mirror coupled to the cavity. The first and second mirrors are formed of periodic trenches etched into the surface of a waveguide.Type: GrantFiled: February 26, 2003Date of Patent: April 3, 2007Assignee: Evident TechnologiesInventors: Michael LoCascio, Clinton T. Ballinger, Daniel P. Landry
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Patent number: 7110640Abstract: An optical filter that includes a resonator cavity comprised of a saturable absorber material is provided. An input signal waveguide, a non-resonant wavelengths output waveguide, and a resonant wavelength output waveguide are coupled to the cavity. A refractive index of the saturable absorber material is altered so that a resonant wavelength output is directed down the resonant wavelength output waveguide and non-resonant wavelengths are directed down the non-resonant wavelengths output waveguide.Type: GrantFiled: July 19, 2001Date of Patent: September 19, 2006Assignee: Evident TechnologiesInventors: Michael LoCascio, Clinton T. Ballinger, Daniel P. Landry, David Depoy
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Patent number: 7095959Abstract: A multiplexing/demultiplexing system has a multiplexor that includes a first plurality of optical switches having a plurality of outputs and a first plurality of optical delay elements coupled to the optical switches. A source of optical light is coupled to the delay elements, and an optical combiner is coupled to the plurality of outputs and a source of framing pulses. A demultiplexor includes a first and second splitter, and a threshold detector coupled to the first splitter. The demultiplexor further includes a second plurality of optical delay elements coupled to the threshold detector, and a second plurality of optical switches coupled to the second splitter and the second plurality of delay elements.Type: GrantFiled: June 20, 2001Date of Patent: August 22, 2006Assignee: Evident TechnologiesInventors: Michael LoCascio, Clinton T. Ballinger, Chester A. Pratt, Daniel P. Landry
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Patent number: 6710911Abstract: An optical wavelength converter converts an optical input signal having a first wavelength into an optical output signal having a second wavelength. The wavelength converter includes a saturable absorber switch having a control beam waveguide and an input waveguide. The converter further includes a first input coupled to the control beam waveguide and adapted to receive the optical input signal, and a second input coupled to the input waveguide and adapted to receive a second optical signal having the second wavelength from an optical source.Type: GrantFiled: March 2, 2001Date of Patent: March 23, 2004Assignee: Evident TechnologiesInventors: Michael LoCascio, Clinton T. Ballinger, Daniel P. Landry
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Patent number: 6697548Abstract: A Fabry-Perot optical switch includes a saturable absorber surrounded by a pair of mirrors. Coupled to the saturable absorber is an input waveguide, an output waveguide, and a control beam waveguide. In the absence of light input to the control beam waveguide, the saturable absorber prevents an input signal on the input waveguide from passing through and being output on the output waveguide, thus placing the switch in an “off” state. In the presence of light input to the control beam waveguide and incident on the saturable absorber, the saturable absorber allows the input signal to pass through and be output on the output waveguide, or be reflected and output on the output waveguide, thus placing the switch in an “on” state.Type: GrantFiled: June 25, 2001Date of Patent: February 24, 2004Assignee: Evident TechnologiesInventors: Michael LoCascio, Clinton T. Ballinger, Daniel P. Landry, James E. Raynolds
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Publication number: 20040033020Abstract: An optical filter includes a first mirror, a cavity coupled to the first mirror, and a second mirror coupled to the cavity. The first and second mirrors are formed of periodic trenches etched into the surface of a waveguide.Type: ApplicationFiled: February 26, 2003Publication date: February 19, 2004Inventors: Michael LoCascio, Clinton T. Ballinger, Daniel P. Landry
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Patent number: 6611640Abstract: An optical dispersion compensator includes a saturable absorber. Coupled to the saturable absorber is a pre-amplifier and a post-amplifier. The saturable absorber compresses optical pulse signals based upon the amplitude envelope of the optical pulse in order to prevent optical dispersion.Type: GrantFiled: February 14, 2001Date of Patent: August 26, 2003Assignee: Evident TechnologiesInventors: Michael LoCasclo, Clinton T. Ballinger, Daniel P. Landry
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Publication number: 20030099428Abstract: An optical switch includes a saturable absorber. Coupled to the saturable absorber is an input waveguide, an output waveguide, and a control beam waveguide. In the absence of light input to the control beam waveguide, the saturable absorber prevents an input signal on the input waveguide from passing through and being output on the output waveguide, thus placing the switch in an “off” state. In the presence of light input to the control beam waveguide and incident of the saturable absorber, the saturable absorber allows the input signal to pass through and be output on the output waveguide, thus placing the switch in an “on” state.Type: ApplicationFiled: December 18, 2000Publication date: May 29, 2003Inventors: Michael LoCascio, Clinton T. Ballinger, Daniel P. Landry, James E. Raynolds
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Patent number: 6571028Abstract: An optical switch includes a saturable absorber. Coupled to the saturable absorber is an input waveguide, an output waveguide, and a control beam waveguide. In the absence of light input to the control beam waveguide, the saturable absorber prevents an input signal on the input waveguide from passing through and being output on the output waveguide, thus placing the switch in an “off” state. In the presence of light input to the control beam waveguide and incident of the saturable absorber, the saturable absorber allows the input signal to pass through and be output on the output waveguide, thus placing the switch in an “on” state.Type: GrantFiled: December 18, 2000Date of Patent: May 27, 2003Assignee: Evident TechnologiesInventors: Michael LoCascio, Clinton T. Ballinger, Daniel P. Landry, James E. Raynolds
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Publication number: 20030016907Abstract: An optical filter that includes a resonator cavity comprised of a saturable absorber material. An input signal waveguide, a non-resonant wavelengths output waveguide, and a resonant wavelength output waveguide are coupled to the cavity.Type: ApplicationFiled: July 19, 2001Publication date: January 23, 2003Inventors: Michael LoCascio, Clinton T. Ballinger, Daniel P. Landry, David Depoy
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Publication number: 20030013109Abstract: The present invention provides for a device and method for detecting genetic material. The device includes at least one hairpin sensor or, preferably two or more hairpin sensors, spatially and/or spectrally multiplexed on a conductive or semi-conductive substrate or particle. The at least one hairpin sensor includes a quenchable fluorescing agent bound to a hairpin loop assembly and the hairpin loop assembly includes a probe complementary to a nucleotide sequence of interest. The method includes providing at least one hairpin sensor, exposing the at least one hairpin sensor to a sample of interest, and detecting fluorescence produced by the quenchable fluorescing agent. The fluorescence indicates the binding of a target nucleotide sequence to the complementary probe of the hairpin loop assembly.Type: ApplicationFiled: June 21, 2002Publication date: January 16, 2003Inventors: Clinton T. Ballinger, Michael LoCascio, Daniel P. Landry
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Publication number: 20020196497Abstract: A multiplexing/demultiplexing system has a multiplexor that includes a first plurality of optical switches having a plurality of outputs and a first plurality of optical delay elements coupled to the optical switches. A source of optical light is coupled to the delay elements, and an optical combiner is coupled to the plurality of outputs and a source of framing pulses. A demultiplexor includes a first and second splitter, and a threshold detector coupled to the first splitter. The demultiplexor further includes a second plurality of optical delay elements coupled to the threshold detector, and a second plurality of optical switches coupled to the second splitter and the second plurality of delay elements.Type: ApplicationFiled: June 20, 2001Publication date: December 26, 2002Inventors: Michael LoCascio, Clinton T. Ballinger, Chester A. Pratt, Daniel P. Landry
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Publication number: 20020122241Abstract: An optical wavelength converter converts an optical input signal having a first wavelength into an optical output signal having a second wavelength. The wavelength converter includes a saturable absorber switch having a control beam waveguide and an input waveguide. The converter further includes a first input coupled to the control beam waveguide and adapted to receive the optical input signal, and a second input coupled to the input waveguide and adapted to receive a second optical signal having the second wavelength from an optical source.Type: ApplicationFiled: March 2, 2001Publication date: September 5, 2002Applicant: OPTICAL WAVELENGTH CONVERTERInventors: Michael LoCascio, Clinton T. Ballinger, Daniel P. Landry
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Publication number: 20020076128Abstract: A Fabry-Perot optical switch includes a saturable absorber surrounded by a pair of mirrors. Coupled to the saturable absorber is an input waveguide, an output waveguide, and a control beam waveguide. In the absence of light input to the control beam waveguide, the saturable absorber prevents an input signal on the input waveguide from passing through and being output on the output waveguide, thus placing the switch in an “off” state. In the presence of light input to the control beam waveguide and incident on the saturable absorber, the saturable absorber allows the input signal to pass through and be output on the output waveguide, or be reflected and output on the output waveguide, thus placing the switch in an “on” state.Type: ApplicationFiled: June 25, 2001Publication date: June 20, 2002Inventors: Michael LoCascio, Clinton T. Ballinger, Daniel P. Landry, James E. Raynolds
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Publication number: 20020041736Abstract: An optical dispersion compensator includes a saturable absorber. Coupled to the saturable absorber is a pre-amplifier and a post-amplifier. The saturable absorber compresses optical pulse signals based upon the amplitude envelope of the optical pulse in order to prevent optical dispersion.Type: ApplicationFiled: February 14, 2001Publication date: April 11, 2002Inventors: Michael LoCasclo, Clinton T. Ballinger, Daniel P. Landry