公开(公告)号：US09091568B2

公开(公告)日：2015-07-28

申请号：US14518197

申请日：2014-10-20

Applicant: Heptagon Micro Optics Pte. Ltd.

Inventor： Jens Geiger ,  Daniel Reymann

IPC: G01J1/00 ,  G01D5/347

CPC classification number: G01D5/34707 ,  G01D5/34715 ,  G01D5/3473

Abstract: An optical encoder system includes a module that has a light emitting element and a light detecting element, wherein the light detecting element is operable to detect light at a wavelength emitted by the light emitting element. The optical encoder system also includes a code wheel that has facets on its surface. Each facet has a surface that provides diffuse reflectance, with adjacent facets being inclined by different amounts. The code wheel can be disposed with respect to the module so that at least some light emitted by the light emitting element is reflected by the facets back toward the module, wherein an amount of reflected light detected by the light detecting element in the module depends at least in part on the rotational position of the code wheel.

Abstract translation: 光学编码器系统包括具有发光元件和光检测元件的模块，其中光检测元件可操作以检测由发光元件发射的波长的光。 光学编码器系统还包括在其表面上具有刻面的编码轮。 每个小面具有提供漫反射率的表面，其中相邻小面倾斜不同的量。 代码轮可以相对于模块设置，使得由发光元件发射的至少一些光被小面反射回模块，其中由模块中的光检测元件检测到的反射光的量取决于 至少部分地在码轮的旋转位置。

公开(公告)号：US20150108353A1

公开(公告)日：2015-04-23

申请号：US14518197

申请日：2014-10-20

Applicant: Heptagon Micro Optics Pte. Ltd.

Inventor： Jens Geiger ,  Daniel Reymann

IPC: G01D5/347

CPC classification number: G01D5/34707 ,  G01D5/34715 ,  G01D5/3473

Abstract: An optical encoder system includes a module that has a light emitting element and a light detecting element, wherein the light detecting element is operable to detect light at a wavelength emitted by the light emitting element. The optical encoder system also includes a code wheel that has facets on its surface. Each facet has a surface that provides diffuse reflectance, with adjacent facets being inclined by different amounts. The code wheel can be disposed with respect to the module so that at least some light emitted by the light emitting element is reflected by the facets back toward the module, wherein an amount of reflected light detected by the light detecting element in the module depends at least in part on the rotational position of the code wheel.

Abstract translation: 光学编码器系统包括具有发光元件和光检测元件的模块，其中光检测元件可操作以检测由发光元件发射的波长的光。 光学编码器系统还包括在其表面上具有刻面的编码轮。 每个小面具有提供漫反射率的表面，其中相邻小面倾斜不同的量。 代码轮可以相对于模块设置，使得由发光元件发射的至少一些光被小面反射回模块，其中由模块中的光检测元件检测到的反射光的量取决于 至少部分地在码轮的旋转位置。