Apparatus and methods for the optical examination of birefringent specimens
US8961727B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 1, 2010 |
| Grant date | Feb 24, 2015 |
| Priority date | — |
| Expiry date | Jan 19, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24942
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for optically examining a birefringent specimen, the method comprising the steps of: collecting a specimen using a substantially non-birefringent polymer film having an adhesive surface, such that the specimen is attached to the adhesive surface; and examining, between crossed polars, the specimen attached to the said film. Also provided is a substantially non-birefringent laminate film comprising: a first birefringent polymer layer and a second birefringent polymer layer, the first and second layers being mutually oriented such that the birefringent properties of the two layers cancel each other out; and an adhesive surface; wherein the adhesive surface is an outer surface of the film, and/or is an exposable surface between the first and second layers. A method of manufacturing such a film is also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.