Apparatus and method for determining optical retardation and birefringence
US7310145B2 · kind B2 · utility
2Cited by
6References
15Claims
0Family size
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Key dates
| Filing date | Feb 23, 2004 |
| Grant date | Dec 18, 2007 |
| Priority date | — |
| Expiry date | Feb 13, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N21/23
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for determining the optical retardation and birefringence values of an anisotropic material utilizing a Fourier transform near infrared spectrophotometer operated in at least a portion of the range of wavenumbers between about 4,000 to about 10,000 cm−1.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.