| 摘要 |
A light trap suitable for use in an optical imaging system includes a hollow sphere, with a hollow cylindrical tube attached substantially tangent to the surface of the sphere, and forming a chimney. The interior and exterior surfaces of the sphere are coated with a low-reflective coating, such as flat black paint. A sample to be imaged is placed over the opening of the chimney with an imaging system and illumination source directed downward into the chimney itself. Light which passes through or around the sample is captured in the sphere, so that it is not reflected back into the imaging system.
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