公开(公告)号：US06921893B1

公开(公告)日：2005-07-26

申请号：US10276518

申请日：2000-06-15

申请人： Norbert Petschik ,  Frank Burkhardt

发明人： Norbert Petschik ,  Frank Burkhardt

IPC分类号： G01B11/00 ,  G01D5/347 ,  H01J40/14

CPC分类号： G01D5/34715 ,  G01D5/3473

摘要： A position detector for a scanning device includes a movable light blocker, at least two light detectors which are located behind the light blocker and which can be covered by the light blocker at different extents of coverage as the light blocker is being moved, so that the position of the light blocker can be determined, and at least one light source for emitting light onto the light detectors. A reflector is provided which is located in front of the light blocker. The light source is arranged such that the light emitted therefrom is emitted onto the reflector. Furthermore, the reflector is arranged such that the light impinging thereon is reflected onto the light detectors.

摘要翻译： 用于扫描装置的位置检测器包括可移动遮光器，至少两个位于光阻挡器后面的光检测器，并且当遮光器正在移动时可以在不同的覆盖范围内被光阻挡器覆盖，使得 可以确定光阻挡器的位置，以及用于将光发射到光检测器上的至少一个光源。 设置有位于光阻挡器前面的反射器。 光源被布置成使得从其发射的光被发射到反射器上。 此外，反射器被布置成使得入射到其上的光被反射到光检测器上。

公开(公告)号：US09285214B2

公开(公告)日：2016-03-15

申请号：US14113668

申请日：2012-05-02

申请人： Norbert Petschik ,  Vladimir Ponkratov ,  Martin Valentin ,  Hans-Joachim Münzer

发明人： Norbert Petschik ,  Vladimir Ponkratov ,  Martin Valentin ,  Hans-Joachim Münzer

IPC分类号： G01B9/02 ,  G01B11/26 ,  G01D5/28 ,  G01D5/38

CPC分类号： G01B11/26 ,  G01D5/285 ,  G01D5/38

摘要： Position detector for determining the rotation angle position of a rotatably supported object, comprising a light source for producing a light beam, a diffraction grating, a mirror which is connected with the object in a co-rotating manner in such a way that the light beam is reflected therefrom onto the diffraction grating and passes over the diffraction grating during a rotation of the mirror, thereby producing diffraction light, an interference device which is configured such as to be able to bring different diffraction orders of the diffraction light to interference, thereby producing an interference pattern, a light detector by means of which a brightness course, caused by the passing over of the diffraction grating with the reflected light beam, of the interference pattern can be detected, and an evaluation unit by which the rotation angle position of the object can be determined based on the brightness course.

摘要翻译： 用于确定可旋转支撑物体的旋转角度位置的位置检测器，包括用于产生光束的光源，衍射光栅，与对象以同向旋转的方式连接的反射镜，使得光束 被反射到衍射光栅上并在反射镜旋转期间通过衍射光栅，从而产生衍射光，干涉装置被配置为能够使衍射光的衍射级与干涉不同，从而产生 可以检测干涉图案，能够检测由干涉图案的衍射光栅与反射光束的通过引起的亮度过程的光检测器，以及评估单元，通过该评估单元， 物体可以根据亮度进行确定。