Continuous slanted edge focus measurements system
US11006034B2 · kind B2 · utility
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18Claims
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Key dates
| Filing date | Aug 24, 2017 |
| Grant date | May 11, 2021 |
| Priority date | — |
| Expiry date | Aug 24, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N17/002
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A continuous slanted edge focus measurement system characterizes focus of a camera lens. The measurement system may be used to measure effects on focus on caused by factors such as thermal focal shift, humidity focal shift, focal shift caused by changing parts in the camera, and focal shift by changing the camera design. An accurate measurement system enables camera designers to optimize focus under a variety of different conditions and ensure consistency in the products.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.