公开(公告)号：EP1519170B1

公开(公告)日：2010-12-22

申请号：EP04255760.3

申请日：2004-09-22

Applicant: RAYTHEON COMPANY

Inventor： Chen, Chungte W. ,  Ansley, David A

IPC: G01J4/02

CPC classification number: G01J4/02

公开(公告)号：EP1519170A1

公开(公告)日：2005-03-30

申请号：EP04255760.3

申请日：2004-09-22

Applicant: Raytheon Company

Inventor： Chen, Chungte W. ,  Ansley, David A

IPC: G01J4/02

CPC classification number: G01J4/02

Abstract: An imaging polarimeter sensor (20) includes an achromatic beamsplitting polarizer (30) that receives a polychromatic image beam (22) of a scene (24) and simultaneously produces a first polarized polychromatic image beam (32) and a second polarized polychromatic image beam (34). The second polarized polychromatic image beam (34) is of a different polarization than the first polarized polychromatic image beam (32) and is angularly separated from the first polarized polychromatic image beam (32). The achromatic beamsplitting polarizer (30) preferably includes a Wollaston prism (50) through which the polychromatic image beam (22) passes, and at least one grating (54, 56) through which the polychromatic image beam (22) passes either before or after it passes through the Wollaston prism (50). An imaging detector (38) receives the first polarized polychromatic image beam (32) and the second polarized polychromatic image beam (34) and produces an output image signal (40) responsive to the first polarized polychromatic image beam (32) and the second polarized polychromatic image beam (34).

Abstract translation: 成像旋光仪传感器（20）包括接收场景（24）的多色图像束（22）的同时产生第一偏振多色图像束（32）和第二偏振多色图像束（32）的消色差分束偏振器（30） 34）。 第二偏振多色图像束（34）具有与第一偏振多色图像束（32）不同的偏振，并且与第一偏振多色图像束（32）成角度地分离。 消色差分束偏振器（30）优选地包括多色图像束（22）通过的渥拉斯顿棱镜（50），以及至少一个光栅（54,56），多色图像束（22）在其之前或之后经过 它穿过渥拉斯顿棱镜（50）。 成像检测器（38）接收第一偏振多色图像束（32）和第二偏振多色图像束（34），并产生响应于第一偏振多色图像束（32）和第二偏振 多色图像束（34）。