Electromagnetic energy measurement apparatus and method
US7477392B2 · kind B2 · utility
2Cited by
15References
49Claims
0Family size
Assignee
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Key dates
| Filing date | Jul 27, 2005 |
| Grant date | Jan 13, 2009 |
| Priority date | — |
| Expiry date | Aug 1, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B27/141
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An electromagnetic energy measurement apparatus and method for measuring first, second, and third wavelength components includes first and second coated optical elements having non-parallel surfaces. Proper selection of the parameters of the optical elements reduces the level of coma and astigmatism in the apparatus. Additionally, filters pass the first, second, and third wavelength components to first, second, and third sensors. Improvement in the alignment of the field of view between sensors is realized by applying an adjustable compressive force on the filters to individually adjust the field of view.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.