Patent ID: 8610900
Filing Date: 2013-12-17
Classification: G01B

Abstract:
1. An apparatus for low coherence optical imaging, comprising: an optical source for providing a low coherence light beam; a main beam splitter for splitting the light beam to a sample light and a reference light, wherein the sample light is projected to a sample, and a portion of the sample light is reflected or scattered by the sample to form an information light, wherein the information light is directed to a photo detector by the main beam splitter; a phase transforming unit for reflecting the reference light to the photo detector and transforming the reference light to have different phases at different positions of a cross-section, said phase transforming unit being a microstructure mirror, said microstructure mirror being an optical grid, wherein the reference light and the information light are superposed to form interference patterns on the photo detector; and a signal processing unit electrically coupled to the photo detector for analyzing the spatial information of the sample.