公开(公告)号：US20160054113A1

公开(公告)日：2016-02-25

申请号：US14795289

申请日：2015-07-09

Applicant: Hitachi-LG Data Storage, Inc.

Inventor： Kentaro OSAWA ,  Naoko SENDA ,  Daisuke TOMITA

IPC: G01B9/02 ,  G01J3/02

CPC classification number: G01B9/02091 ,  G01B9/02058 ,  G01B9/02063 ,  G01B9/02081 ,  G01B9/02083 ,  G01B9/02087 ,  G01J3/0289 ,  G06T5/50 ,  G06T2207/10101 ,  G06T2207/20224

Abstract: A clear image of a measurement target in optical coherence tomography (OCT) is obtained while suppressing influence of reflected light from a specific portion. Included are a laser beam source, a beam splitter that splits a laser beam into a signal beam and reference beam; an objective lens that focuses the signal beam onto a measurement target in a container, a unit that moves the signal beam focus position, an objective lens that focuses the reference beam, a reflecting mirror, a flat plate arranged between the objective lens and reflecting mirror, and interference optics that combine the signal beam reflected by the measurement target with the reference beam reflected by the reflecting mirror and having passed through the objective lens. Three or more interference beams with different phases, and photodetectors that detect the interference beams are generated, and two of the objective lenses are the same lenses.

Abstract translation: 在抑制来自特定部分的反射光的影响的同时，获得光学相干断层摄影（OCT）中的测量对象的清晰图像。 包括激光束源，将激光束分裂成信号光束和参考光束的分束器; 将信号束聚焦在容器中的测量对象物上的物镜，移动信号束聚焦位置的单元，聚焦参考光束的物镜，反射镜，布置在物镜和反射镜之间的平板 以及将由测量对象反射的信号光束与由反射镜反射并经过物镜反射的参考光束组合的干涉光学元件。 产生具有不同相位的三个或更多个干涉光束，以及检测干涉光束的光电检测器，并且两个物镜是相同的透镜。