Apparatus and methods for the optical examination of birefringent specimens
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United States of America Patent
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Feb 24, 2015
Grant Date -
Jul 12, 2012
app pub date -
Jul 1, 2010
filing date -
Jul 6, 2009
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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.
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