MTF testing apparatus
US11846562B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 24, 2021 |
| Grant date | Dec 19, 2023 |
| Priority date | — |
| Expiry date | Mar 24, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/90
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An MTF testing apparatus including a plurality of telescopic cameras each mounted at a fixed predetermined position on a camera holder, each camera receiving an image projected by at least one lens of a single device under test. A processor is coupled to the telescopic cameras. is the processor configured to receive image data from every telescopic camera and perform a plurality of MTF measurements, the telescopic cameras are mounted on the camera holder such that every telescopic camera captures image data resulting in an MTF measurement at a different field position of the lens. The camera holder comprises a holding structure and at least two brackets elongated elements projecting between first and second end portions, the end portions being releasably mounted on the holding structure, and at least two cameras are mounted on every bracket and the brackets are individually detachable from the holding structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.