Lens fitting metrology with optical coherence tomography
AssigneeFacebook Technologies, LLC
InventorsRuobing Qian, Mohamed Tarek El-Haddad, Robin Sharma
Life of this patent
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Abstract
Sensor data is captured with a sensor. The sensor data includes a lens-position of a prescription lens relative to a reference point of an optical coherence tomography (OCT) system. A mirror of a reference arm of the OCT system is positioned at an optical pathlength between an eye region of the prescription lens based at least in part on the sensor data. An OCT signal is generated while the mirror is positioned at the optical pathlength. At least one depth profile is generated that includes the prescription lens and the eye region.
Claims20
A method comprising:
- capturing sensor data with a sensor, wherein the sensor data includes a lens-position of a prescription lens relative to a reference point of an optical coherence tomography (OCT) system;
- positioning a mirror of a reference arm of the OCT system at an optical pathlength between an eye region and the prescription lens based at least in part on the sensor data;
- generating an OCT signal with the OCT system while the mirror of the reference arm is positioned at the optical pathlength;
- and
- generating a depth profile that includes the prescription lens and the eye region.
A non-transitory machine-accessible storage medium that provides instructions that, when executed by processing logic, will cause the processing logic to perform operations comprising:
- capturing sensor data with a sensor, wherein the sensor data includes a lens-position of a prescription lens relative to a reference point of an optical coherence tomography (OCT) system;
- positioning a mirror of a reference arm of the OCT system at an optical pathlength between an eye region and the prescription lens based at least in part on the sensor data;
- generating an OCT signal with the OCT system while the mirror of the reference arm is positioned at the optical pathlength;
- and
- generating a depth profile that includes the prescription lens and the eye region.
A system comprising:
- an optical coherence tomography (OCT) device configured to capture volumetric ocular depth images that includes a front surface of a prescription lens, a back surface of the prescription lens, and an eye region;
- a sensor configured to generate sensor data that includes a lens-position of the prescription lens relative to a reference point of the OCT device;
- a memory storing instructions;
- and
- processing logic configured to receive the volumetric ocular depth images from the OCT device, wherein the processing logic is also configured to access the instructions that when executed by the processing logic, cause the processing logic to perform operations comprising:
- capturing sensor data with the sensor;
- positioning a mirror of a reference arm of the OCT device at an optical pathlength between the eye region and the prescription lens based at least in part on the sensor data;
- and
- generating OCT signals with the OCT system while the mirror of the reference arm is positioned at the optical pathlength;
- and
- generating a volumetric ocular depth image based on the OCT signals.
Dependencies are inferred from the claim text.