Patents by Inventor Lance Leclair
Lance Leclair 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: 20150185246Abstract: Systems and methods for laser based measurement of air parameters are disclosed. An example system includes a coherent source of radiation, a transceiver, an optical mixer, and an intelligent optical device. The coherent source produces a coherent radiation beam that is then transmitted to a target region by the transceiver. The transceiver is further configured to receive a scattered radiation signal from the target region. The optical mixer is configured to receive the scattered radiation signal from the transceiver, receive a reference radiation beam from the coherent source, and to determine a difference between the scattered radiation signal and the reference radiation beam. In certain embodiments, the intelligent optical device is configured to steer, modulate, or condition, at least one of the coherent radiation beam, the scattered radiation signal, and the reference radiation beam.Type: ApplicationFiled: May 18, 2012Publication date: July 2, 2015Applicant: Optical Air Data Systems, LLCInventors: Elizabeth A. Dakin, Priyavadan Mamidipudi, Lance Leclair, Philip L. Rogers
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Patent number: 8930049Abstract: A method of using a light detection system for increasing the accuracy of a precision airdrop is described. Radiation is transmitted to target areas between an airborne vehicle and a dropzone target. Scattered radiation is received from the target areas. Respective wind characteristics are determined from the scattered radiation and a wind velocity map is generated, based on the respective wind characteristics, between the airborne vehicle, and at least the dropzone target. An aerial release point for the precision airdrop is computed based on the generated wind velocity map and a location of the dropzone target.Type: GrantFiled: May 31, 2012Date of Patent: January 6, 2015Assignee: Optical Air Data Systems, LLCInventors: Priyavadan Mamidipudi, Elizabeth A. Dakin, Daniel C. Dakin, Philip L. Rogers, Edgar K. Dede, Peter Gatchell, Madhukiran Panabakam, Lance Leclair, Chia-Chen Chang, Rupak Changkakoti
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Patent number: 8879051Abstract: Systems and methods for laser based measurement of air parameters are disclosed. An example system includes a source of radiation, an amplification system with one or more power amplification stages, a transceiver, and an optical mixer. The source produces a plurality of beams, and the amplification system is configured to amplify the beams. The transceiver is configured to transmit the modulated beam to, and receive a scattered beam from a target region. The optical mixer is configured to determine a difference between the scattered beam and a reference beam, which is used to determine a Doppler shift therefrom. In certain embodiments, the amplification system includes a fiber preamplifier and one or more fiber power amplifiers stages.Type: GrantFiled: May 18, 2012Date of Patent: November 4, 2014Assignee: Optical Air Data Systems, LLCInventors: Elizabeth A. Dakin, Priyavadan Mamidipudi, Philip L. Rogers, Chia-Chen Chang, Rupak Changkokoti, Lance LeClair
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Publication number: 20130325213Abstract: A method of using a light detection system for increasing the accuracy of a precision airdrop is described. Radiation is transmitted to target areas between an airborne vehicle and a dropzone target. Scattered radiation is received from the target areas. Respective wind characteristics are determined from the scattered radiation and a wind velocity map is generated, based on the respective wind characteristics, between the airborne vehicle, and at least the dropzone target. An aerial release point for the precision airdrop is computed based on the generated wind velocity map and a location of the dropzone target.Type: ApplicationFiled: May 31, 2012Publication date: December 5, 2013Applicant: Optical Air Data Systems, LLCInventors: Priyavadan MAMIDIPUDI, Elizabeth A. Dakin, Daniel C. Dakin, Philip L. Rogers, Edgar K. Dede, Peter Gatchell, Madhukiran Panabakam, Lance Leclair, Chia-Chen Chang, Rupak Changkakoti
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Publication number: 20130250276Abstract: A system and method for measuring wind velocities are provided. A laser wind velocimeter with a radiation source includes a fiber laser. All optical signals, transmitted and received, are conveyed by optical fibers. An amplifier amplifies a source laser, which is then transmitted to one or more transceivers. The one or more transceivers, each projecting along a different axis, and each with a single optical fiber input/output interface act as both the transmission device to focus the radiation at a target region, and as the receiving system for collecting reflected radiation. The one or more transceivers transmit radiation to the target region.Type: ApplicationFiled: September 14, 2012Publication date: September 26, 2013Applicant: Optical Air Data Systems, LLCInventors: Chia-Chen CHANG, Priyavadan Mamidipudi, Lance Leclair, Peter Gatchell, Daniel Dakin, Elizabeth A. Dakin
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Publication number: 20130208256Abstract: A transceiver device that includes one or more light sources configured to emit a light beam that includes one or more different wavelengths, and includes a diffractive optical element configured to initiate one or more wavelength specific responses from the light beam to form one or more transmission light beams and to direct the one or more transmission light beams substantially towards a target; and further includes one or more sensor devices configured to receive the one or more transmission light beams and one or more reception light beams that are reflected back from the target. The diffractive optical element (e.g., a holographic element) is used in either a monostatic, bistatic or multistatic design to reduce the required size and/or number of optical elements, lasers and receivers. The transceiver device may be used in a LIDAR system in order to measure air and wind parameters at multiple altitudes.Type: ApplicationFiled: May 16, 2012Publication date: August 15, 2013Applicant: Optical Air Data Systems, LLC.Inventors: Priyavadan MAMIDIPUDI, Elizabeth A. Dakin, Philip L. Rogers, Daniel C. Dakin, Rupak Changkakoti, Lance Leclair
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Patent number: 8508722Abstract: A laser Doppler velocimeter is formed using a fiber laser as the lasing medium. Within the velocimeter, all optical signals, transmitted and received, are conveyed by optical fibers. An amplifier amplifies a source laser, which is then transmitted to one or more transceivers. The one or more transceivers, each projecting along a different axis, and each with a single optical fiber input/output interface act as both the transmission device to focus the radiation at a target region, and as the receiving system for collecting reflected radiation. The transceivers each include an amplifier to further amplify the radiation received from the laser source. The one or more transceivers transmit radiation simultaneously to the target region, and may be located remotely from the laser source. The portion of the reflected radiation collected by the receiving system is analyzed to determine the Doppler shift caused by targets at the focal point of the one or more transceivers.Type: GrantFiled: April 30, 2008Date of Patent: August 13, 2013Assignee: Optical Air Data Systems, LLCInventors: Phillip L. Rogers, Chia Chen Chang, Priyavadan Mamidipudi, Lance Leclair, Peter Gatchell, Daniel Dakin, Elizabeth Dakin
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Patent number: 8508723Abstract: A system and method for measuring wind velocities are provided. A laser wind velocimeter with a radiation source includes a fiber laser. All optical signals, transmitted and received, are conveyed by optical fibers. An amplifier amplifies a source laser, which is then transmitted to one or more transceivers. The one or more transceivers, each projecting along a different axis, and each with a single optical fiber input/output interface act as both the transmission device to focus the radiation at a target region, and as the receiving system for collecting reflected radiation. The one or more transceivers transmit radiation to the target region. A portion of the reflected radiation collected by the receiving system is analyzed to determine the Doppler shift, which can me used to measure wind velocity.Type: GrantFiled: February 14, 2011Date of Patent: August 13, 2013Assignee: Optical Air Data Systems, LLCInventors: Chia-Chen Chang, Priyavadan Mamidipudi, Lance LeClair, Peter Gatchell, Daniel Dakin, Elizabeth A. Dakin
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Publication number: 20130162976Abstract: Systems and methods for laser based measurement of air parameters are disclosed. An example system includes a source of radiation, an amplification system with one or more power amplification stages, a transceiver, and an optical mixer. The source produces a plurality of beams, and the amplification system is configured to amplify the beams. The transceiver is configured to transmit the modulated beam to, and receive a scattered beam from a target region. The optical mixer is configured to determine a difference between the scattered beam and a reference beam, which is used to determine a Doppler shift therefrom. In certain embodiments, the amplification system includes a fiber preamplifier and one or more fiber power amplifiers stages.Type: ApplicationFiled: May 18, 2012Publication date: June 27, 2013Applicant: Optical Air Data Systems, LLCInventors: Elizabeth A. DAKIN, Priyavadan MAMIDIPUDI, Philip L. ROGERS, Chia-Chen CHANG, Rupak CHANGKOKOTI, Lance LECLAIR
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Publication number: 20120206712Abstract: A system and method for measuring wind velocities are provided. A laser wind velocimeter with a radiation source includes a fiber laser. All optical signals, transmitted and received, are conveyed by optical fibers. An amplifier amplifies a source laser, which is then transmitted to one or more transceivers. The one or more transceivers, each projecting along a different axis, and each with a single optical fiber input/output interface act as both the transmission device to focus the radiation at a target region, and as the receiving system for collecting reflected radiation. The one or more transceivers transmit radiation to the target region.Type: ApplicationFiled: February 14, 2011Publication date: August 16, 2012Applicant: Optical Air Data Systems, LLCInventors: Chia-Chen Chang, Priyavadan Mamidipudi, Lance Leclair, Peter Gatchell, Daniel Dakin, Elizabeth A. Dakin
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Publication number: 20110037970Abstract: A laser Doppler velocimeter is formed using a fiber laser as the lasing medium. Within the velocimeter, all optical signals, transmitted and received, are conveyed by optical fibers. An amplifier amplifies a source laser, which is then transmitted to one or more transceivers. The one or more transceivers, each projecting along a different axis, and each with a single optical fiber input/output interface act as both the transmission device to focus the radiation at a target region, and as the receiving system for collecting reflected radiation. The transceivers each include an amplifier to further amplify the radiation received from the laser source. The one or more transceivers transmit radiation simultaneously to the target region, and may be located remotely from the laser source. The portion of the reflected radiation collected by the receiving system is analyzed to determine the Doppler shift caused by targets at the focal point of the one or more transceivers.Type: ApplicationFiled: April 30, 2008Publication date: February 17, 2011Applicant: Optical Air Data Systems, LLCInventors: Phillip L. Rogers, Chia Chen Chang, Priyavadan Mamidipudi, Lance Leclair, Peter Gatchell, Daniel Dakin, Elizabeth Dakin
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Publication number: 20050175059Abstract: A laser assembly (10) comprises a multimode laser (12) having at least one output and operating at a given wavelength. It also includes a double-clad optical fiber (20) having a free end (22) coupled to the output of the laser (12). The optical fiber (20) comprises a core (24) in registry with the output of the laser (12), a multimode inner cladding (26) surrounding the core (24), and an outer cladding (28) surrounding the inner cladding (26), the outer cladding (28) being provided to contain light in the inner cladding (26). A fiber Bragg grating (30) is written in the core (24) of the fiber (20) at a given distance from the free end (22) thereof. The Bragg grating (30) has a reflection spectrum within the gain spectrum of the laser (12). In use, it generates a sufficient feedback and stabilizes the laser (12) at the reflection spectrum of the Bragg grating (30). This provides a low cost laser assembly that is simple, suitable for volume manufacturing and small in size.Type: ApplicationFiled: October 22, 2004Publication date: August 11, 2005Inventors: Lance Leclair, Nigel Holehouse, Richard Murison