# US 12,001,603 B2 · Actuating a contact lens using millimeter electromagnetic waves > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,001,603 B2 - Document ID: US12001603B2 - Status: Granted - Kind: B2 - Application number: 17/096,072 - Filed: 2020-11-12 - Published: 2021-05-20 - Granted: 2024-06-04 - Earliest claimed: 2019-11-15 - Assignees: Google Inc. - Applicants: Google LLC - Inventors: Sean Patrick Korphi; Mohammad Reza Ghajar; Fei He - Web page: https://patentgrep.com/patent/US12001603B2 ## CPC - G06F 3/013: {Eye tracking input arrangements (G06F3/015 takes precedence)} - G02B 7/08: adapted to co-operate with a remote control mechanism - G02B 7/09: adapted for automatic focusing or varying magnification - G02C 7/04: Contact lenses for the eyes (disinfection or sterilisation of contact lenses A61L12/00) - G03B 3/10: Power-operated focusing - G06F 3/017: {Gesture based interaction, e.g. based on a set of recognized hand gestures (interaction based on gestures traced on a digitiser G06F3/04883)} - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS - G02C: SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES (trial frames for testing the eyes A61B3/04; goggles or eyeshields not having the same features as spectacles A61F9/00) - G03B: APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR (optical parts of such apparatus G02B; photosensitive materials or processes for photographic purposes G03C; apparatus for processing exposed photographic materials G03D) ## Abstract The present disclosure describes systems and techniques directed to detecting a user's gaze and using millimeter electromagnetic waves to actuate a focus system of a contact lens worn by the user. The described systems and techniques include a contact lens (108) having a focus system (222) and contact lens circuitry (226) that includes transceiver circuitry (228), logic circuitry (230), and memory circuitry (232). The memory circuitry (232) stores instructions of a focus manager application (234) that, when executed by the logic circuitry (230), directs the contact lens (108) to actuate the focus system (222) in response to receiving a signal (110) having a millimeter wave (114). ## Claims ### Claim 1 A contact lens comprising: a focus system; an antenna; and circuitry including: transceiver circuitry configured to receive wireless signals comprising electromagnetic waves within a spectrum that corresponds to a millimeter-wave spectrum; logic circuitry; and memory circuitry storing instructions of a focus manager that when executed by the logic circuitry, directs the contact lens to: determine, based on a data frame or a data packet carried by one of the wireless signals, an estimated distance between the contact lens and a user equipment from which the wireless signal originates, the data frame or data packet of the wireless signal indicating the estimated distance; determine, based on the estimated distance between the contact lens and the user equipment, to change a focal length of the contact lens; and actuate, in response to determining to change the focal length of the contact lens, the focus system effective to change the focal length of the contact lens. ### Claim 2 (depends on 1) The contact lens as recited by claim 1, wherein: the focus system includes a bladder filled with a polymer gel; and actuating the focus system includes applying an electrical stimulation to the polymer gel to induce a change to a refractive index of the polymer gel. ### Claim 3 (depends on 1) The contact lens as recited by claim 1, wherein: the focus system includes a bladder formed from a polymer film; and actuating the focus system includes applying an electrical stimulation to the polymer film to induce a change in shape or dimension of the bladder. ### Claim 4 (depends on 1) The contact lens as recited by claim 1, wherein the focus manager directs the contact lens to actuate the focus system to correct a presbyopia condition. ### Claim 5 (depends on 1) The contact lens as recited by claim 1, wherein the focus manager directs the contact lens to actuate the focus system to correct a myopia condition. ### Claim 6 (depends on 1) The contact lens as recited by claim 1, wherein the focus manager directs the contact lens to actuate the focus system to one of multiple, available degrees of actuation based on the estimated distance determined from the data frame or the data packet carried by the wireless signal. ### Claim 7 (depends on 1) The contact lens as recited by claim 1, wherein the memory circuitry stores parameters that indicate eyesight capabilities of the user. ### Claim 8 (depends on 7) The contact lens as recited by claim 7, wherein determining to change the focal length of the contact lens is based, in part, on the parameters that indicate the eyesight capabilities of the user. ### Claim 9 A user equipment, the user equipment comprising: a display; a processor; and memory circuitry storing instructions of a focus assistant manager that, when executed by the processor, directs the user equipment to: present, through the display, an image; estimate a distance between the user equipment and a contact lens; determine to transmit a wireless signal to a contact lens to actuate a focus system of the contact lens; and transmit the wireless signal to the contact lens, the wireless signal carrying a data frame or data packet indicating the estimated distance between the user equipment and the contact lens and directing the contact lens to actuate the focus system of the contact lens to change a focal length of the contact lens based on the estimated distance, the wireless signal comprising electromagnetic waves within a spectrum that corresponds to a millimeter wave spectrum. ### Claim 10 (depends on 9) The user equipment as recited by claim 9, wherein the focus assistant manager directs the user equipment to transmit the wireless signal in response to determining that the image is associated with a type of viewer application that is executing on the user equipment. ### Claim 11 (depends on 10) The user equipment as recited by claim 10, wherein the type of viewer application is a magnifier application. ### Claim 12 (depends on 9) The user equipment as recited by claim 9, wherein the user equipment includes a gaze-detection system and the focus assistant manager directs the user equipment to transmit the wireless signal further in response to determining that the user is gazing at the image. ### Claim 13 (depends on 12) The user equipment as recited by claim 12, wherein the gaze-detection system includes an accelerometer and/or gyroscope to detect motion, a near-field communication device or proximity sensor to detect a presence of the user, or an image-capture sensor for facial recognition. ### Claim 14 (depends on 9) The user equipment as recited by claim 9, wherein: the user equipment further comprises a radar system for gesture recognition; and the focus manager directs the user equipment to estimate, using the radar system of the user equipment, the distance between the user equipment and the contact lens. ### Claim 15 (depends on 9) The user equipment as recited by claim 9, wherein the focus assistant manager further directs the user equipment to change a magnification level, a resolution level, or a brightness level of the display based on eyesight capabilities of the user. ### Claim 16 (depends on 15) The user equipment as recited by claim 15, wherein the focus assistant manager directs the user equipment to receive the eyesight capabilities of the user from the contact lens or a medical service provider. ### Claim 17 (depends on 9) The user equipment as recited by claim 9, wherein determining to transmit the wireless signal to the contact lens includes determining a direction of transmission by which to beamform the wireless signal toward the contact lens. ### Claim 18 (depends on 9) The user equipment as recited by claim 9, wherein determining to transmit the wireless signal to the contact lens as a wireless signal includes determining an attenuation distance for the beamformed signal. ### Claim 19 (depends on 10) The user equipment as recited by claim 10, wherein the type of viewer application is an e-reader application. ### Claim 20 (depends on 9) The user equipment as recited by claim 9, wherein: the wireless signal transmitted by the user equipment carries an additional data frame or an additional data packet that indicates parameters comprising at least two of: a model of the user equipment; a configuration of the user equipment; an available transmit power of the user equipment; a resolution of the display of the user equipment; an illumination power of the display of the user equipment; or available formats of the image presented via the display of the user equipment; and the wireless signal further directs the contact lens to actuate the focus system of the contact lens to change the focal length of the contact lens based on the estimated distance and the parameters of the additional data frame or the additional data packet.