Patents by Inventor Jennifer Aspell
Jennifer Aspell 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: 11906842Abstract: An optical film for a back light unit that includes an array of light emitting diodes. The optical film includes a substrate, and a plurality of regions of spatially modulated microstructures on at least one side of the substrate. The spatially modulated microstructures have different sizes and/or shapes configured to create a gradient structure within each region. The gradient structure within each region is constructed and arranged to cause more spreading of light when positioned directly above an individual light emitting diode and less spreading of light at locations not directly above an individual light emitting diode. Within the back light unit, the gradient structure converts light beams emitted by the respective light emitting diode at different angles into a more uniform and higher on-axis luminance upon exiting the back light unit.Type: GrantFiled: November 12, 2022Date of Patent: February 20, 2024Assignee: BrightView Technologies, Inc.Inventors: Jennifer Aspell, Thomas A. Rinehart, Bing Shen, Kenneth L. Walker
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Publication number: 20230079565Abstract: An optical film for a back light unit that includes an array of light emitting diodes. The optical film includes a substrate, and a plurality of regions of spatially modulated microstructures on at least one side of the substrate. The spatially modulated microstructures have different sizes and/or shapes configured to create a gradient structure within each region. The gradient structure within each region is constructed and arranged to cause more spreading of light when positioned directly above an individual light emitting diode and less spreading of light at locations not directly above an individual light emitting diode. Within the back light unit, the gradient structure converts light beams emitted by the respective light emitting diode at different angles into a more uniform and higher on-axis luminance upon exiting the back light unit.Type: ApplicationFiled: November 12, 2022Publication date: March 16, 2023Applicant: BrightView Technologies, Inc.Inventors: Jennifer Aspell, Thomas A. Rinehart, Bing Shen, Kenneth L. Walker
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Patent number: 11531232Abstract: An optical film for a back light unit that includes an array of light emitting diodes. The optical film includes a substrate, and a plurality of regions of spatially modulated microstructures on at least one side of the substrate. The spatially modulated microstructures have different sizes and/or shapes configured to create a gradient structure within each region. The gradient structure within each region is constructed and arranged to cause more spreading of light when positioned directly above an individual light emitting diode and less spreading of light at locations not directly above an individual light emitting diode. Within the back light unit, the gradient structure converts light beams emitted by the respective light emitting diode at different angles into a more uniform and higher on-axis luminance upon exiting the back light unit.Type: GrantFiled: January 22, 2021Date of Patent: December 20, 2022Inventors: Jennifer Aspell, Thomas A. Rinehart, Bing Shen, Kenneth L. Walker
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Patent number: 11441756Abstract: A light transmissive substrate for transforming a Lambertian light distribution includes a base film having a first side and a second side opposite the first side, a plurality of first microstructures disposed on the first side of the base film and a plurality of first valleys. Each of the first valleys is defined by a pair of adjacent first microstructures. A filler material is disposed in the plurality of first valleys and defines a substantially planar surface spaced from and substantially parallel to the first side of the base film. The substrate also includes a plurality of second microstructures disposed on the substantially planar surface of the filler material and a plurality of second valleys. Each of the second valleys is defined by a pair of adjacent second microstructures.Type: GrantFiled: June 13, 2019Date of Patent: September 13, 2022Assignee: Brightview Technologies, Inc.Inventors: Jennifer Aspell, Kenneth L. Walker, Bing Shen
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Publication number: 20210231290Abstract: A light transmissive substrate for transforming a Lambertian light distribution includes a base film having a first side and a second side opposite the first side, a plurality of first microstructures disposed on the first side of the base film and a plurality of first valleys. Each of the first valleys is defined by a pair of adjacent first microstructures. A filler material is disposed in the plurality of first valleys and defines a substantially planar surface spaced from and substantially parallel to the first side of the base film. The substrate also includes a plurality of second microstructures disposed on the substantially planar surface of the filler material and a plurality of second valleys. Each of the second valleys is defined by a pair of adjacent second microstructures.Type: ApplicationFiled: June 13, 2019Publication date: July 29, 2021Inventors: Jennifer ASPELL, Kenneth L. WALKER, Bing SHEN
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Publication number: 20210232004Abstract: An optical film for a back light unit that includes an array of light emitting diodes. The optical film includes a substrate, and a plurality of regions of spatially modulated microstructures on at least one side of the substrate. The spatially modulated microstructures have different sizes and/or shapes configured to create a gradient structure within each region. The gradient structure within each region is constructed and arranged to cause more spreading of light when positioned directly above an individual light emitting diode and less spreading of light at locations not directly above an individual light emitting diode. Within the back light unit, the gradient structure converts light beams emitted by the respective light emitting diode at different angles into a more uniform and higher on-axis luminance upon exiting the back light unit.Type: ApplicationFiled: January 22, 2021Publication date: July 29, 2021Applicant: BrightView Technologies, Inc.Inventors: Jennifer Aspell, Thomas A. Rinehart, Bing Shen, Kenneth L. Walker
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Patent number: 6337939Abstract: The traditional solution to monitoring the pump laser power uses the back facet of the pump laser to monitor its power. However, stability and aging issues of the back facet may make it difficult or even impossible to measure the pump power to a high degree of accuracy using this method. Pump lasers often use fiber Bragg gratings to stabilize their wavelength. However, if an in-line optical fiber blazed Bragg grating is used, then the pump power is coupled out of the grating to a detector and monitored. The method of the present invention minimizes components and provides a direct monitoring of fiber coupled power. Alternatively, light coupled out of a WDM is used in a similar manner to monitor the pump power.Type: GrantFiled: February 1, 2000Date of Patent: January 8, 2002Assignee: JDS Uniphase Inc.Inventors: Jennifer Aspell, Donald R. Zimmerman
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Patent number: 5620495Abstract: Recognizing the rate-determining nature of the coating removal and recoating steps, applicants have demonstrated that with proper combination of low absorbing polymer, glass and low intensity radiation, UV-induced gratings can be side-written into polymer coated fibers without removing the polymer, thus permitting up the possibility of high speed fabrication of fiber gratings.Type: GrantFiled: August 16, 1995Date of Patent: April 15, 1997Assignee: Lucent Technologies Inc.Inventors: Jennifer Aspell, Daryl Inniss, Valerie J. Kuck, Mark A. Paczkowski, Debra A. Simoff
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Patent number: 5223705Abstract: In an embodiment for obtaining accurate noise figure measurements for any degree of saturation of an optical amplifier, a polarizer is located at the output of the optical amplifier. The amplified spontaneous noise (ASE) produced by an optical amplifier is not polarized, whereas the amplified signal has a well defined state of polarization which is preferably linear. If the amplified signal is not linearly polarized, it can be rendered linearly polarized in one direction by means of a polarization controller located downstream of the polarizer. By setting the polarizer to have its state of polarization orthogonal to that of the linearly polarized amplified signal, the spectral density of the ASE from the polarizer can be measured without associated distortion due to the signal. By sequentially adjusting the polarization controller to minimize and then maximize the signal which it passes, sequential measurements of the ASE spectral density and gain of the optical amplifier can be obtained.Type: GrantFiled: August 12, 1992Date of Patent: June 29, 1993Assignee: AT&T Bell LaboratoriesInventors: Jennifer Aspell, Neal S. Bergano, Bruce M. Nyman, Richard G. Smart, James W. Sulhoff, John L. Zyskind