# US 2025/0164310 A1 · Outdoor time tracking via eyeglasses > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2025/0164310 A1 - Document ID: US20250164310A1 - Status: Published application - Kind: A1 - Application number: 18/513,588 - Filed: 2023-11-19 - Published: 2025-05-22 - Earliest claimed: 2023-11-19 - Assignees: Pixieray Oy - Applicants: Pixieray Oy - Inventors: Klaus Melakari; Rebecca Melakari - Web page: https://patentgrep.com/patent/US20250164310A1 ## CPC - G01J 1/4204: {with determination of ambient light (solar light G01J2001/4266)} - G01J 1/0238: {making use of sensor-related data, e.g. for identification of sensor or optical parts} - G01J 1/0403: {Mechanical elements; Supports for optical elements; Scanning arrangements} - G01J 1/429: {applied to measurement of ultraviolet light (using counting tubes G01T)} - G02C 11/10: {Electronic devices other than hearing aids} - G01J 2001/0257: {portable} - G01J 2001/4266: {for measuring solar light} - G02B 2027/0178: {Eyeglass type (eyeglass details G02C)} - G02C 7/101: {having an electro-optical light valve (electro-optical elements per se G02F)} - G01J: MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY (light sources F21, H01J, H01K, H05B; investigating properties of materials by optical means G01N) - 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) - G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS ## Abstract An eyewear and a method for determining user exposure wherein the eyewear includes at least one first sensor attached to a frame of the eyewear and wherein the first sensor is selected from at least one of: ultraviolet light sensor (UVS), photopic ambient light sensor (ALS), and a controller configured to receive values for a photopic light level and an ultraviolet light level from the at least one first sensor, provide a timeline for the received values of the photopic light level and the ultraviolet light level, calculate from the timeline, the photopic light level, and the ultraviolet light level, a probability of time duration the eyewear has been exposed to outdoor environment, and provide the calculated probability of time duration for a user of the eyewear. ## Claims ### Claim 1 An eyewear comprising: at least one first sensor attached to a frame of the eyewear and wherein the first sensor is selected from at least one of: ultraviolet light sensor (UVS), photopic ambient light sensor (ALS), and a controller configured to: receive values for a photopic light level and an ultraviolet light level from the at least one first sensor, provide a timeline for the received values of the photopic light level and the ultraviolet light level, calculate from the timeline, the photopic light level, and the ultraviolet light level, a probability of time duration the eyewear has been exposed to outdoor environment, and provide the calculated probability of time duration for a user of the eyewear. ### Claim 2 (depends on 1) The eyewear of claim 1, wherein the eyewear is deemed to be exposed to the outdoor environment when the value of the ultraviolet light level is higher than a predetermined threshold. ### Claim 3 (depends on 1) The eyewear of claim 1, wherein the controller (110) is further configured to determine a time of sunrise and a time of sunset via a navigation receiver. ### Claim 4 (depends on 3) The eyewear of claim 3, wherein the controller is further configured to adjust the probability of duration of time to be provided to the user based on the determined time of sunrise, or the time of sunset. ### Claim 5 (depends on 1) The eyewear of claim 1, wherein the frame comprises a first temple and a second temple, and wherein the at least one first sensor is attached to a front part of the frame to maximize the amount of the light received by the at least one first sensor. ### Claim 6 (depends on 1) The eyewear of claim 1, further comprises at least one inertial measurement unit (IMU) for determining an orientation, or a change of orientation, of the eyewear. ### Claim 7 (depends on 1) The eyewear of claim 1, wherein the controller is further configured to determine an angle of ultraviolet light, or photopic light, received by the eyewear based on at least one of the photopic light level, the ultraviolet light level, the orientation, or the change of orientation of the eyewear. ### Claim 8 (depends on 1) The eyewear of claim 1, further comprises a thermal sensor for measuring a temperature of the outdoor environment, or the frame, or the user of the eyewear. ### Claim 9 (depends on 1) The eyewear of claim 1, further comprises at least one second sensor for measuring a level of infrared (IR) light received by the eyewear. ### Claim 10 (depends on 1) The eyewear of claim 1, wherein the controller is further configured to compute a ratio of the ultraviolet light level and the photopic light level to determine whether the eyewear is exposed to indoor lighting or ambient lighting. ### Claim 11 (depends on 1) The eyewear of claim 1, further comprises a light sensor configured to detect a light pattern of the exposed light. ### Claim 12 (depends on 11) The eyewear of claim 11, wherein the controller is configured to determine whether the eyewear is exposed to indoor lighting or ambient lighting based on the detected light pattern of the exposed light. ### Claim 13 A method of determining user exposure via the eyewear, comprising: providing at least one first sensor attached to a frame of the eyewear and wherein the first sensor is selected from at least one of: ultraviolet light sensor (UVS), photopic ambient light sensor (ALS); receiving values for a photopic light level and an ultraviolet light level from the at least one first sensor, providing a timeline for the received values of the photopic light level and the ultraviolet light level, calculating from the timeline, the photopic light level and the ultraviolet light level, a probability of time that the eyewear has been exposed to outdoor environment, and providing the probability of time for a user of the eyewear. ### Claim 14 (depends on 13) The method of claim 13, further comprising comparing the value of the ultraviolet light level with a predetermined threshold, wherein the eyewear is deemed to be exposed to the outdoor environment. ### Claim 15 (depends on 13) The method of claim 13, further comprising determining time of sunrise and time of sunset based on the provided timeline. ### Claim 16 (depends on 13) The method of claim 13, further comprising adjusting the value of the probability of time to be provided to the user based on the time of sunrise and sunset. ### Claim 17 (depends on 13) The method of claim 13, further comprising determining an orientation, or a change of orientation, of the eyewear via at least one inertial measurement unit. ### Claim 18 (depends on 13) The method of claim 13, further comprising determining an angle of ultraviolet or photopic light received by the eyewear based on the photopic light level or the ultraviolet light level, and the orientation or change of orientation. ### Claim 19 (depends on 13) The method of claim 13, further comprising computing a ratio of the ultraviolet light level and the photopic light level to determine whether the eyewear is exposed to indoor lighting or ambient lighting. ### Claim 20 (depends on 13) The method of claim 13, further comprising detecting a light pattern of the exposed light via a light sensor to determine whether the eyewear is exposed to indoor lighting or ambient lighting.