Optical characterization system for lenses
US10444512B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 9, 2018 |
| Grant date | Oct 15, 2019 |
| Priority date | — |
| Expiry date | May 13, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B27/0025
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical characterization system tests optical elements of head-mounted displays (HMD) such as lenses. The system emits a test pattern of light through an aperture of a hollow truncated cone. The hollow truncated cone may be rotated to different angles of test positions, for example, to mimic rotation of a human eye of a user wearing an HMD. The emitted light is refracted by a test lens and captured by a detector assembly. Using images captured by the detector assembly, the system determines one or more quality metrics of the test lens. Quality metrics may describe various types of optical aberrations, which may be determined as a function of the test positions (e.g., angle and/or position of the hollow truncated cone relative to the test lens). In addition, the system may generate an optical profile of the test lens using the quality metrics.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.