Patents by Inventor Donald Scott Langford
Donald Scott Langford 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: 11982881Abstract: A contact lens having an electronic system is described herein to provide lens accommodation using a distance measurement determined from an ultrasound time of flight signal. In at least one embodiment, the contact lens includes an ultrasound module, a system controller, a timing circuit, and an actuator. In at least one embodiment, the ultrasound module includes at least one transducer configured to emit a sound pressure wave outwardly and receive a reflected sound pressure wave from an object. A timer may track an elapsed time between generation and detection of the sound pressure wave by the at least one transducer to determine the distance to the object. In at least one embodiment, lens accommodation is further achieved using a communication link between a pair of contact lenses to determine a convergence angle based on independent distance measurements generated by each contact lens.Type: GrantFiled: May 3, 2021Date of Patent: May 14, 2024Assignee: Johnson & Johnson Vision Care, Inc.Inventors: Donald Scott Langford, Adam Toner
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Publication number: 20210255486Abstract: A contact lens having an electronic system is described herein to provide lens accommodation using a distance measurement determined from an ultrasound time of flight signal. In at least one embodiment, the contact lens includes an ultrasound module, a system controller, a timing circuit, and an actuator. In at least one embodiment, the ultrasound module includes at least one transducer configured to emit a sound pressure wave outwardly and receive a reflected sound pressure wave from an object. A timer may track an elapsed time between generation and detection of the sound pressure wave by the at least one transducer to determine the distance to the object. In at least one embodiment, lens accommodation is further achieved using a communication link between a pair of contact lenses to determine a convergence angle based on independent distance measurements generated by each contact lens.Type: ApplicationFiled: May 3, 2021Publication date: August 19, 2021Inventors: Donald Scott Langford, Adam Toner
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Publication number: 20200333630Abstract: An ophthalmic lens having an electronic system for imaging at least a wearer's eye including a ciliary muscle and/or a lens to determine lens accommodation by propagating a sound pressure wave(s) into the eye and determining a relative position of the ciliary muscle from one or more detections of the partially reflected sound pressure wave(s) including, for example, amplitude and/or time and in other embodiments frequency. The ophthalmic lens includes at least one ultrasound module having at least one transducer such as a pair of transmit and receive transducers, a transceiver transducer or a plurality of transducers. The ultrasound module includes additional components for the creation and reception of the sound pressure wave(s). The ophthalmic lens may be a contact lens or an intraocular lens.Type: ApplicationFiled: April 18, 2019Publication date: October 22, 2020Inventors: Adam Toner, Donald Scott Langford
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Patent number: 10784877Abstract: Programmable timer circuits are disclosed. One timer circuit may include a reference circuit configured to generate a bias current, a current controlled oscillator configured to receive the bias current c, and a frequency divider network configured to divide an output of the oscillator. The timer circuit may be capable of timing for 24 hour period, while using less than 5nA of quiescent current.Type: GrantFiled: December 21, 2016Date of Patent: September 22, 2020Assignee: Johnson & Johnson Vision Care, Inc.Inventors: Gregory James Fisher, Donald Scott Langford, Randall B. Pugh, Adam Toner
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Publication number: 20200201077Abstract: A pair of ophthalmic lens having an electronic system is described herein for communicating between them using ultrasound transducers for creating a sound pressure wave(s) propagated through the eyes and the optic nerve of the wearer of the contact lenses. The ophthalmic lenses include at least one ultrasound module having at least one transducer such as a pair of transmit and receive transducers and a transceiver transducer that are optic nerve facing. The ultrasound module includes additional components for the transmission and receipt of the sound pressure wave(s). In an alternative embodiment, there is one ultrasound module with a multiplexer connected to a plurality of transducers. In at least one embodiment, the sound pressure wave(s) encodes a message between the ophthalmic lenses.Type: ApplicationFiled: December 20, 2018Publication date: June 25, 2020Inventors: Donald Scott Langford, Adam Toner
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Publication number: 20200159045Abstract: A ophthalmic lens having an electronic system is described herein for detecting blinks using at least one transducer emitting a sound pressure wave(s) to be reflected from the inside of the eyelid when the wearer is blinking or otherwise has his/her eyelid closed. The ophthalmic lens in further embodiments may communicate with a second ophthalmic lens to confirm the detection of a blink. In at least one embodiment, the ophthalmic lens includes at least one ultrasound module having at least one transducer such as a pair of transmit and receive transducers, a transceiver transducer or a plurality of transducers. The ultrasound module includes additional components for the creation and reception of the sound pressure wave(s). The ophthalmic lenses may be contact lenses or intraocular lenses.Type: ApplicationFiled: November 20, 2018Publication date: May 21, 2020Inventors: Donald Scott Langford, Adam Toner
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Publication number: 20200159043Abstract: A first contact lens and a second contact lens each having an electronic system is described herein for spatially locating the position of a wearer's nose relative to each lens. The contact lenses include at least one ultrasound module having at least one transducer such as a pair of transmit and receive transducers, a transceiver transducer or a plurality of transducers. The ultrasound module includes additional components for the creation and reception of the sound pressure wave(s).Type: ApplicationFiled: November 20, 2018Publication date: May 21, 2020Inventors: Donald Scott Langford, Adam Toner
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Publication number: 20200159042Abstract: An ophthalmic lens having an electronic system is described herein for providing an identification in response to a signal or inquiry and/or receiving an identification tag. The ophthalmic lenses include at least one ultrasound module having at least one transducer such as a transmit transducer or a piezoelectric transducer. The ophthalmic lens further includes an identification module for generating an identification in response to a signal and powering the ultrasound module to propagate at least one sound pressure wave embodying the identification. In at least one embodiment, the identification data is encoded after manufacture of the device. The ophthalmic lens may be a contact lens or an intraocular lens.Type: ApplicationFiled: November 20, 2018Publication date: May 21, 2020Inventors: Donald Scott Langford, Adam Toner
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Publication number: 20200064660Abstract: The present disclosure relates to a communication systems for electronic ophthalmic devices. In certain embodiments, the ophthalmic device may comprise a light-emitting device. The ophthalmic device may comprise a light detection device. The light detection device may be used to receive light signals. The light-emitting device may be used to transmit light signals.Type: ApplicationFiled: August 24, 2018Publication date: February 27, 2020Inventors: Donald Scott Langford, Donald K. Whitney, Adam Toner
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Patent number: 10551639Abstract: A powered ophthalmic lens having an electronic system is described herein configured to communicate with an external device using an ultrasound module for creating a sound pressure wave(s) to be transmitted through a medium, e.g. air, to an external device. The ophthalmic lens includes at least one ultrasound module having at least one transducer such as a pair of transmit and receive transducers, a transceiver transducer or a plurality of transducers. The ultrasound module includes additional components for the creation and reception of the sound pressure wave(s). In an alternative embodiment, there is one ultrasound module with a multiplexer connected to a plurality of transducers. In at least one embodiment, the sound pressure wave(s) encodes a message from the external device to the contact lens. In at least one alternative embodiment, the sound pressure wave(s) encodes a message from the contact lens to the external device.Type: GrantFiled: May 16, 2018Date of Patent: February 4, 2020Assignee: Johnson & Johnson Vision Care, Inc.Inventors: Donald Scott Langford, Adam Toner
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Publication number: 20190353932Abstract: A powered ophthalmic lens having an electronic system is described herein configured to communicate with an external device using an ultrasound module for creating a sound pressure wave(s) to be transmitted through a medium, e.g. air, to an external device. The ophthalmic lens includes at least one ultrasound module having at least one transducer such as a pair of transmit and receive transducers, a transceiver transducer or a plurality of transducers. The ultrasound module includes additional components for the creation and reception of the sound pressure wave(s). In an alternative embodiment, there is one ultrasound module with a multiplexer connected to a plurality of transducers. In at least one embodiment, the sound pressure wave(s) encodes a message from the external device to the contact lens. In at least one alternative embodiment, the sound pressure wave(s) encodes a message from the contact lens to the external device.Type: ApplicationFiled: May 16, 2018Publication date: November 21, 2019Inventors: Donald Scott Langford, Adam Toner
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Publication number: 20190353928Abstract: A pair of ophthalmic lens having an electronic system is described herein for communicating between them using ultrasound transducers for creating a sound pressure wave(s) to be scattered by the nose of the wearer of the ophthalmic lenses. The ophthalmic lenses include at least one ultrasound module having at least one transducer such as a pair of transmit and receive transducers, a transceiver transducer or a plurality of transducers. The ultrasound module includes additional components for the creation and reception of the sound pressure wave(s). In at least one embodiment, the sound pressure wave(s) encodes a message between the contact lenses. In at least one embodiment, the ophthalmic lenses include contact lenses or intraocular lenses.Type: ApplicationFiled: May 17, 2018Publication date: November 21, 2019Inventors: Donald Scott Langford, Adam Toner
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Publication number: 20190346692Abstract: A contact lens having an electronic system is described herein to provide lens accommodation using a distance measurement determined from an ultrasound time of flight signal. In at least one embodiment, the contact lens includes an ultrasound module, a system controller, a timing circuit, and an actuator. In at least one embodiment, the ultrasound module includes at least one transducer configured to emit a sound pressure wave outwardly and receive a reflected sound pressure wave from an object. A timer may track an elapsed time between generation and detection of the sound pressure wave by the at least one transducer to determine the distance to the object. In at least one embodiment, lens accommodation is further achieved using a communication link between a pair of contact lenses to determine a convergence angle based on independent distance measurements generated by each contact lens.Type: ApplicationFiled: May 9, 2018Publication date: November 14, 2019Inventors: Donald Scott Langford, Adam Toner
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Publication number: 20180175870Abstract: Programmable timer circuits are disclosed. One timer circuit may include a reference circuit configured to generate a bias current, a current controlled oscillator configured to receive the bias current c, and a frequency divider network configured to divide an output of the oscillator. The timer circuit may be capable of timing for 24 hour period, while using less than 5nA of quiescent current.Type: ApplicationFiled: December 21, 2016Publication date: June 21, 2018Inventors: Gregory James Fisher, Donald Scott Langford, Randall B. Pugh, Adam Toner