公开(公告)号：US20090079982A1

公开(公告)日：2009-03-26

申请号：US12234103

申请日：2008-09-19

Applicant: Nicolas Lefaudeux

Inventor： Nicolas Lefaudeux

IPC: G01J4/00

CPC classification number: G01J4/04

Abstract: A device and a method for high-speed linear polarization imaging of a scene are disclosed. The device comprises a polarization modulator for modulating the polarization of light emitted from the scene in order to obtain at least three linear polarization states of the light. The polarization modulator comprises a polarizer, a first polarization rotation block comprising a fixed quarter-wave plate and a first liquid crystal operating as a quarter-wave plate, and a second polarization rotation block comprising a second liquid crystal operating as a half-wave plate. Each of the first and second liquid crystals arc switchable between two states, thereby providing the at least three polarization states to the polarization modulator. The device further comprises a sensor adapted to capture image frames of the light from the scene at each polarization state of the polarization modulator.

Abstract translation: 公开了一种用于场景的高速线性偏振成像的装置和方法。 该装置包括用于调制从场景发射的光的偏振的偏振调制器，以便获得光的至少三个线偏振态。 偏振调制器包括偏振器，包括固定四分之一波长板和作为四分之一波片工作的第一液晶的第一偏振旋转块和包括作为半波片操作的第二液晶的第二偏振旋转块 。 第一和第二液晶中的每一个可在两种状态之间切换，从而向偏振调制器提供至少三种偏振状态。 该装置还包括适于在偏振调制器的每个偏振状态捕获来自场景的光的图像帧的传感器。

公开(公告)号：US08004675B2

公开(公告)日：2011-08-23

申请号：US12234103

申请日：2008-09-19

Applicant: Nicolas Lefaudeux

Inventor： Nicolas Lefaudeux

IPC: G01J4/00

CPC classification number: G01J4/04

Abstract: A device and a method for high-speed linear polarization imaging of a scene are disclosed. The device comprises a polarization modulator for modulating the polarization of light emitted from the scene in order to obtain at least three linear polarization states of the light. The polarization modulator comprises a polarizer, a first polarization rotation block comprising a fixed quarter-wave plate and a first liquid crystal operating as a quarter-wave plate, and a second polarization rotation block comprising a second liquid crystal operating as a half-wave plate. Each of the first and second liquid crystals are switchable between two states, thereby providing the at least three polarization states to the polarization modulator. The device further comprises a sensor adapted to capture image frames of the light from the scene at each polarization state of the polarization modulator.

Abstract translation: 公开了一种用于场景的高速线性偏振成像的装置和方法。 该装置包括用于调制从场景发射的光的偏振的偏振调制器，以便获得光的至少三个线偏振态。 偏振调制器包括偏振器，包括固定四分之一波长板和作为四分之一波片工作的第一液晶的第一偏振旋转块和包括作为半波片操作的第二液晶的第二偏振旋转块 。 第一和第二液晶中的每一个可在两种状态之间切换，从而向偏振调制器提供至少三种偏振状态。 该装置还包括适于在偏振调制器的每个偏振状态捕获来自场景的光的图像帧的传感器。