公开(公告)号：US06473250B1

公开(公告)日：2002-10-29

申请号：US09380703

申请日：1999-09-15

申请人： Mark A V Chapman ,  Tingdi Liao

发明人： Mark A V Chapman ,  Tingdi Liao

IPC分类号： G02B504

CPC分类号： G02B26/0883

摘要： A beam deflector has first and second wedge prisms having refractive indices and geometries which are similar (in the case of the geometry to within arc minutes). The prisms are rotatable about an optical axis O defined by the direction of propagation of the incident light beam, to adjust the angle through which the incident beam is deflected. A third prism has a wedge angle which is greater than that of the first and second prisms by a factor of 2. When the directions in which the first and second prisms refract the beam away from the optical axis are aligned about the optical axis at notional angles of 0° and 90° respectively, and the third prism is aligned with its direction of refractive deviation at a notional angle of 225° about the optical axis, the light beam will pass undeviated through the deflecting device. The provision of the third prism ameliorates the need to match closely the geometries and refractive indices of the first and second prisms, and yet avoids the occurrence of angles through which the beam may not be deflected as a result of insufficiently closely matched prisms.

摘要翻译： 光束偏转器具有第一和第二楔形棱镜，其具有类似的折射率和几何形状（在几何形状的情况下在弧分钟内）。 棱镜可以围绕由入射光束的传播方向限定的光轴O旋转，以调节入射光束偏转的角度。 第三棱镜具有比第一和第二棱镜的楔形角大2倍的楔角。当第一和第二棱镜将光束远离光轴折射的方向以名义上的光轴对齐时 角度分别为0°和90°，并且第三棱镜与其光轴的225°方向的折射偏离方向对准，光束将通过偏转装置未透射。 提供第三棱镜改善了与第一和第二棱镜的几何形状和折射率紧密匹配的需要，并且避免了由于不完全匹配的棱镜而不能偏转光束的角度的出现。

公开(公告)号：US20060019372A1

公开(公告)日：2006-01-26

申请号：US10528662

申请日：2003-10-03

申请人： Mark Adrian Chapman ,  William Lee ,  Tingdi Liao

发明人： Mark Adrian Chapman ,  William Lee ,  Tingdi Liao

IPC分类号： C12M1/34 ,  G01B9/02

CPC分类号： G01B9/02 ,  G02B26/0883

摘要： A laser system and interferometer are disclosed comprising a laser source for generating a laser beam, and first and second adjustable elements wherein the first and second adjustable elements have limited rotational motion so rotation of the first adjustable element causes deviation of a laser beam in one plane and rotation of the second adjustable element causes deviation in a second plane, and a laser beam from the laser source is oblique to a required beam direction whereby rotation of the adjustable elements deviates the laser beam enabling alignment of the laser beam to the required beam direction. The adjustable elements may be rotatable through 90°. The first and second planes may be perpendicular to the required beam direction and to each other. At least one mirror may be provided which can be angularly offset to the required beam direction.

摘要翻译： 公开了一种激光系统和干涉仪，其包括用于产生激光束的激光源，以及第一和第二可调节元件，其中第一和第二可调节元件具有有限的旋转运动，因此第一可调元件的旋转导致激光束在一个平面中的偏离 并且第二可调节元件的旋转引起第二平面中的偏差，并且来自激光源的激光束倾斜于所需的光束方向，由此可调节元件的旋转使激光束偏移，使激光束能够对准所需的光束方向 。 可调元件可以旋转90°。 第一和第二平面可以垂直于所需的波束方向和彼此。 可以提供至少一个可以成角度地偏移到所需波束方向的反射镜。

公开(公告)号：US06597505B1

公开(公告)日：2003-07-22

申请号：US09700198

申请日：2000-11-13

申请人： Raymond J Chaney ,  Mark A V Chapman ,  Tingdi Liao ,  Jan Linnenbuerger ,  Damon M Northeast

发明人： Raymond J Chaney ,  Mark A V Chapman ,  Tingdi Liao ,  Jan Linnenbuerger ,  Damon M Northeast

IPC分类号： G02B530

CPC分类号： G01B9/02007 ,  G01B9/02021 ,  G01B9/02058 ,  G01B9/02067 ,  G01B2290/70 ,  G02B6/4207 ,  G02B6/4216

摘要： Apparatus for producing and guiding a light beam, in particular for a laser interferometer, includes a laser having a laser tube (100) and an external cavity (112). Two laser beams (110A′ and 110B′) of orthogonal polarization states are directed from the cavity into polarization maintaining fibers (12, 14). The two beams are generated from a single beam (110) by a birefringent prism (120) in the cavity. Additional beam steering prisms (130A and 130B) are included to direct the beams from the birefringent prism to the fibers. The additional steering prisms compensate for temperature induced beam deviations in the birefringent prisms. Interferometric sensing heads (20, 22) receive the beams from the fibers and include a rotatable wedge prism and mechanical adjustment means for guiding the beams onto reflecting surfaces on an object for positioning the object. The ends of the fibers attached to the sensing heads are kinematically located in the head.

摘要翻译： 用于产生和引导光束，特别是用于激光干涉仪的设备包括具有激光管（100）和外部空腔（112）的激光器。 正交极化状态的两个激光束（110A'和110B'）从空腔引导到偏振保持光纤（12,14）中。 两个光束通过空腔中的双折射棱镜（120）由单个光束（110）产生。 包括附加的光束导向棱镜（130A和130B）以将光束从双折射棱镜引导到光纤。 附加的转向棱镜补偿双折射棱镜中的温度感应光束偏差。 干涉测量头（20,22）从光纤接收光束并且包括可旋转的楔形棱镜和用于将光束引导到用于定位物体的物体上的反射表面上的机械调节装置。 附着在感测头上的纤维的端部运动地位于头部。

公开(公告)号：US07304815B2

公开(公告)日：2007-12-04

申请号：US10528662

申请日：2003-10-03

申请人： Mark Adrian Vincent Chapman ,  William Ernest Lee ,  Tingdi Liao

发明人： Mark Adrian Vincent Chapman ,  William Ernest Lee ,  Tingdi Liao

IPC分类号： G02B5/04 ,  G01B9/02

CPC分类号： G01B9/02 ,  G02B26/0883

摘要： A laser system and interferometer are disclosed comprising a laser source for generating a laser beam, and first and second adjustable elements wherein the first and second adjustable elements have limited rotational motion so rotation of the first adjustable element causes deviation of a laser beam in one plane and rotation of the second adjustable element causes deviation in a second plane, and a laser beam from the laser source is oblique to a required beam direction whereby rotation of the adjustable elements deviates the laser beam enabling alignment of the laser beam to the required beam direction. The adjustable elements may be rotatable through 90°. The first and second planes may be perpendicular to the required beam direction and to each other. At least one mirror may be provided which can be angularly offset to the required beam direction.

摘要翻译： 公开了一种激光系统和干涉仪，其包括用于产生激光束的激光源，以及第一和第二可调节元件，其中第一和第二可调节元件具有有限的旋转运动，因此第一可调元件的旋转导致激光束在一个平面中的偏离 并且第二可调节元件的旋转引起第二平面中的偏差，并且来自激光源的激光束倾斜于所需的光束方向，由此可调节元件的旋转使激光束偏移，使激光束能够对准所需的光束方向 。 可调元件可以旋转90°。 第一和第二平面可以垂直于所需的波束方向和彼此。 可以提供至少一个可以成角度地偏移到所需波束方向的反射镜。