Expanded foucault knife-edge test for quantitatively testing an optical imaging device
US4969737A · kind A · utility
2Cited by
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4Claims
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Assignee
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Key dates
| Filing date | Feb 27, 1990 |
| Grant date | Nov 13, 1990 |
| Priority date | — |
| Expiry date | Feb 27, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01M11/0257
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The historical Foucault knife-edge test enables one to qualitatively ascertain an optical imaging device's characteristics, for example, whether or not it is a source of optical aberrations. The novel method of the present invention, in sharp contrast, complements the historical Foucault knife-edge test, by expanding the test so as to develop a quantitative interpretation of the imaging device's characteristics.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.