公开(公告)号：US4367016A

公开(公告)日：1983-01-04

申请号：US140183

申请日：1980-04-14

Applicant: Joerg Willhelm

Inventor： Joerg Willhelm

IPC: G02B3/08 ,  G03B13/02

CPC classification number: G02B3/08

Abstract: Disclosed is a flat field lens having an image splitting effect, comprising a generally planar lens of substantially transparent material having an optical axis; and a plurality of deformations of identical cross-sectional configuration formed on concentric paths about the optical axis of the transparent lens. Each of the deformations has at least two light-refracting surfaces which are symmetrical to an axis of the deformation, wherein the axis of symmetry of each deformation lying on the same concentric path has the same inclination with respect to the optical axis, and the inclination of the axes of symmetry of deformations located on radially adjacent concentric paths varies, preferably constantly, with respect to the optical axis.

Abstract translation: 公开了具有图像分离效果的平坦场透镜，包括具有光轴的基本上透明的材料的大致平面的透镜; 以及在透明透镜的光轴的同心路径上形成的相同截面形状的多个变形。 每个变形具有至少两个与变形轴对称的光折射表面，其中位于同一同心路径上的每个变形的对称轴线具有相对于光轴的相同倾斜度，并且倾斜度 位于径向相邻同心路径上的变形对称轴线相对于光轴优选恒定地变化。

公开(公告)号：US4176276A

公开(公告)日：1979-11-27

申请号：US854380

申请日：1977-11-23

Applicant: Dietmar Kaul ,  Joerg Willhelm

Inventor： Dietmar Kaul ,  Joerg Willhelm

IPC: G01D5/38 ,  H01J3/14

CPC classification number: G01D5/38

Abstract: Disclosed is a photoelectric incident light distance measuring device, comprising a light source; a reflecting scale grating; a reference grating with a lattice constant differing from that of the scale grating; the reference grating being transparent and displaceable with respect to the scale grating; an air space between the two gratings; and a plurality of photoelectric receivers placed at intervals in the direction of the distance to be measured for scanning the scale grating through the reference grating whereby vernier strips are produced, and wherein at least two of the photoelectric receivers are arranged approximately at a distance "x", measured in the direction of the light, from the grating with the larger optically effective lattice constant, wherein:x=a/vwitha=optically effective air space between the reference and scale gratings;v=d.sub.M /(y+d.sub.M)=distortion factor;y=distance of the vernier strips produced by the two gratings;and withd.sub.M as the optically effective lattice constant of the scale grating, related to the optically effective lattice constant d.sub.R of the reference grating by the relationshipd.sub.R =d.sub.M (1.+-.v).

Abstract translation: 公开了一种光电入射光距离测量装置，包括光源; 反射光栅; 具有不同于刻度光栅的晶格常数的参考光栅; 参考光栅相对于刻度光栅是透明的和可移位的; 两个光栅之间的空间; 以及多个光电接收器，沿着待测量距离的方向间隔放置，以通过参考光栅扫描标尺光栅，从而产生游标条，并且其中至少两个光电接收器被布置在距离“x 其中：x = a / v，其中a =在参考光栅和刻度光栅之间有光学有效的空气空间; v = dM /（y + dM）=失真因子; y =由两个光栅产生的游标条的距离; 并用dM作为刻度光栅的光学有效晶格常数，与参考光栅的光学有效晶格常数dR有关系dR = dM（1 +/- v）。

公开(公告)号：US06747262B2

公开(公告)日：2004-06-08

申请号：US10289632

申请日：2002-11-07

Applicant: Joerg Willhelm

Inventor： Joerg Willhelm

IPC: G01J142

CPC classification number: G01D5/2451 ,  G01D5/2454 ,  G01D5/36

Abstract: A position measuring system for determining the relative position of a first object and a second object movable relative to one another that includes an incremental track, associated with a first object and having a periodic line structure that has individual lines and a scanning unit, associated with a second object movable relative to the first object, that scans said periodic line structure and that generates a corresponding incremental signal. A sensor system that generates absolute position information pertaining to the relative position of the first and second objects, wherein the width of the individual lines, as measured along a longitudinal direction of the incremental track, varies over at least a portion of the breadth of the incremental track, as measured in a direction transverse to the longitudinal direction, in such a way that a structure with absolute position information is superimposed on the periodic line structure.

Abstract translation: 一种位置测量系统，用于确定第一物体和第二物体相对于彼此可移动的相对位置，所述第一物体和第二物体包括与第一物体相关联的增量轨道，并且具有与各行相关联的周期性线结构和扫描单元 相对于第一物体可移动的第二物体，其扫描所述周期性线结构并产生相应的增量信号。 产生与第一和第二物体的相对位置有关的绝对位置信息的传感器系统，其中沿着增量轨迹的纵向方向测量的各条线的宽度在至少一部分宽度上变化 沿垂直于纵向方向的方向测量的增量轨道以这样一种方式使得具有绝对位置信息的结构叠加在周期线结构上。

公开(公告)号：US5841134A

公开(公告)日：1998-11-24

申请号：US809591

申请日：1997-03-26

Applicant: Reiner Burgschat ,  Joerg Willhelm

Inventor： Reiner Burgschat ,  Joerg Willhelm

IPC: G01B11/00 ,  G01D5/38

CPC classification number: G01D5/38

Abstract: A photoelectric path- and angle-measurement system for measuring the displacement of two objects relative to one another comprises a quantity N=n.multidot.4 of photoreceivers which are arranged in a photoreceiver matrix in such a way that the diagonals of the photoreceivers lie parallel to the diagonals of the photoreceiver matrix and the photoreceivers which detect the same phase position are electrically connected with one another, and these signals are fed to an evaluating circuit.

Abstract translation: PCT No.PCT / EP96 / 03276 Sec。 371日期1997年3月26日 102（e）1997年3月26日PCT PCT 1996年7月25日PCT公布。 第WO97 / 05457号公报 日期1997年2月13日用于测量两个物体相对于彼此的位移的光电路径和角度测量系统包括被布置在光接收器矩阵中的光接收器的量N = n×4，使得光接收器的对角线 平行于光接收器矩阵的对角线并且检测相同相位的光接收器彼此电连接，并且这些信号被馈送到评估电路。