公开(公告)号：US20130194563A1

公开(公告)日：2013-08-01

申请号：US13828221

申请日：2013-03-14

Applicant: Nikon Corporation

Inventor： Eric Peter Goodwin ,  Daniel G. Smith ,  Brian L. Stamper ,  Alexander Cooper ,  Alec Robertson

IPC: G02B26/10 ,  G01S17/95

CPC classification number: G02B26/105 ,  G01S7/4812 ,  G01S17/95 ,  G02B26/0816

Abstract: A compact optical assembly for a laser radar system is provided, that is configured to move as a unit with a laser radar system as the laser radar system is pointed at a target and eliminates the need for a large scanning (pointing) mirror that is moveable relative to other parts of the laser radar. The optical assembly comprises a light source, a lens, a scanning reflector and a fixed reflector that are oriented relative to each other such that: (i) a beam from the light source is reflected by the scanning reflector to the fixed reflector; (ii) reflected light from the fixed reflector is reflected again by the scanning reflector and directed along A line of sight through the lens; and (iii) the scanning reflector is moveable relative to the source, the lens and the fixed reflector, to adjust the focus of the beam along the line of sight.

Abstract translation: 提供了一种用于激光雷达系统的紧凑型光学组件，其被配置为随着激光雷达系统指向目标而与激光雷达系统一起移动，并且消除了对可移动的大扫描（指向）镜的需要 相对于激光雷达的其他部分。 光学组件包括相对于彼此定向的光源，透镜，扫描反射器和固定反射器，使得：（i）来自光源的光束被扫描反射器反射到固定反射器; （ii）来自固定反射镜的反射光再次被扫描反射器反射并沿A视线穿过透镜; 和（iii）扫描反射器相对于光源，透镜和固定反射器可移动，以便沿着视线调节光束的焦点。

公开(公告)号：US09644720B2

公开(公告)日：2017-05-09

申请号：US13833726

申请日：2013-03-15

Applicant: Lorri L. Watson ,  Nikon Corporation

Inventor： Alec Robertson ,  Douglas C. Watson ,  Alexander Cooper

IPC: G01C3/08 ,  F16H35/06 ,  G01S7/481 ,  G01S7/497 ,  G02B7/08 ,  G02B7/18

CPC classification number: F16H35/06 ,  G01S7/4813 ,  G01S7/4818 ,  G01S7/4972 ,  G02B7/08 ,  G02B7/1805 ,  Y10T29/49 ,  Y10T74/18888

Abstract: Focus arrangements for laser radar and other applications provide compensation of orientation-dependent gravitational forces. A linear stage can be preloaded and provided with balanced linear encoders so that gravitational force induced pitch, yaw, and roll can be reduced, detected, or compensated. Alternatively, movable focus elements can be secured to actuator driven spring assemblies that are controlled to compensate orientation-dependent gravitational forces.

公开(公告)号：US20150268344A1

公开(公告)日：2015-09-24

申请号：US13841021

申请日：2013-03-15

Applicant: NIKON CORPORATION ,  NIKON METROLOGY NV

Inventor： Mina A. Rezk ,  Anthony R. Slotwinski ,  Daniel G. Smith ,  Eric Peter Goodwin ,  Alexander Cooper ,  Thomas M. Hedges

IPC: G01S17/32 ,  G01B9/02 ,  G01S7/481

CPC classification number: G01S17/325 ,  G01B9/02007 ,  G01S7/4812 ,  G01S7/4817 ,  G01S7/4818 ,  G01S7/4917 ,  G01S7/497 ,  G01S17/42 ,  G01S17/66

Abstract: Laser radar systems include a pentaprism configured to scan a measurement beam with respect to a target surface. A focusing optical assembly includes a corner cube that is used to adjust measurement beam focus. Target distance is estimated based on heterodyne frequencies between a return beam and a local oscillator beam. The local oscillator beam is configured to propagate to and from the focusing optical assembly before mixing with the return beam. In some examples, heterodyne frequencies are calibrated with respect to target distance using a Fabry-Perot interferometer having mirrors fixed to a lithium aluminosilicate glass-ceramic tube.

Abstract translation: 激光雷达系统包括配置成相对于目标表面扫描测量光束的五棱镜。 聚焦光学组件包括用于调节测量光束聚焦的角立方体。 基于返回波束和本地振荡器波束之间的外差频率来估计目标距离。 本地振荡器束配置成在与返回光束混合之前传播到聚焦光学组件和/或从聚焦光学组件传播。 在一些示例中，使用具有固定到铝硅酸锂玻璃 - 陶瓷管的镜子的法布里 - 珀罗干涉仪来校准相对于目标距离的外差频率。

公开(公告)号：US20150185324A1

公开(公告)日：2015-07-02

申请号：US13870655

申请日：2013-04-25

Applicant: Nikon Corporation

Inventor： Alexander Cooper ,  Michael B. Binnard

IPC: G01S17/66 ,  G01S7/497 ,  G01S17/06

CPC classification number: G01S17/66 ,  G01S3/784 ,  G01S7/4811 ,  G01S7/497 ,  G01S17/32 ,  G01S17/42

Abstract: A laser radar system can include laser tracking functions based on laser flux portions returned from a target and intercepted at annular segmented detectors, or at optical mounting hardware such as spider arms. In some examples, a folding or return mirror is partially transmissive, and directs a portion of the return flux to one or more photodetectors. The return beam portions used for tracking can be detected without significant attenuation or obstruction or a laser radar beam path, so that laser radar and laser tracking can be combined.

Abstract translation: 激光雷达系统可以包括基于从目标返回并在环形分段检测器处截取的激光通量部分或在诸如蜘蛛臂的光学安装硬件处的激光跟踪功能。 在一些示例中，折叠或返回镜是部分透射的，并且将一部分返回通量引导到一个或多个光电检测器。 可以检测用于跟踪的返回光束部分而没有显着的衰减或障碍或激光雷达光束路径，使得可以组合激光雷达和激光跟踪。