公开(公告)号：US20160131889A1

公开(公告)日：2016-05-12

申请号：US14898524

申请日：2014-06-20

Applicant: NEC CORPORATION

Inventor： Takao MORIMOTO ,  Takayuki SUDOU

IPC: G02B21/36 ,  G01J1/04 ,  G01J1/42

CPC classification number: G02B21/361 ,  G01J1/0407 ,  G01J1/42 ,  G01J3/0208 ,  G01J3/0216 ,  G01J3/0229 ,  G01J3/42 ,  G01N21/3581 ,  G02B21/0004

Abstract: [Object] To provide an optical device for use with coherent terahertz light, which enables to reduce and remove an unwanted interference pattern, and to acquire a terahertz image of high image quality.[Solving Means] The optical device for use with coherent terahertz light includes an optical system (2) that uses coherent terahertz light beam (1) whose frequency(ies) is/are within a range from 0.1 to 10 THz. A structure(s) (4) being located outside of effective diameter (3) of the beam (1) and including anti-reflection material (5) on an area(s) of the structure, the area(s) is/are facing to the beam (1).

Abstract translation: 提供一种用于相干太赫兹光的光学装置，其能够减少和去除不需要的干涉图案，并获得高图像质量的太赫兹图像。 [解决方案]用于相干太赫兹光的光学装置包括使用其频率在0.1至10THz范围内的相干太赫兹光束（1）的光学系统（2）。 一种结构（4）位于梁（1）的有效直径（3）的外侧，并且在该结构的一个或多个区域上包括防反射材料（5），该区域是 面向梁（1）。