发明名称 |
Reflective encoder with three-dimensional code carrier |
摘要 |
An encoder having a code pattern on a carrier and an emitter detector module is disclosed. The code pattern includes alternating reflective and opaque regions on a carrier that includes a planar surface. The emitter-detector module includes a light source that generates light and directs a portion of the generated light at the first side of the carrier and a first detector that detects light reflected from one of the reflective regions. The reflective regions include a three-dimensional element for directing light from the light source onto the first detector. The element has a surface that is inclined at an oblique angle with respect to the planar surface. The code pattern moves with respect to the emitter-detector module. The three-dimensional element can include a reflective imaging element that images the light source onto a surface of the first detector.
|
申请公布号 |
US2007215799(A1) |
申请公布日期 |
2007.09.20 |
申请号 |
US20060369287 |
申请日期 |
2006.03.06 |
申请人 |
YEOH THENG H;TAN HOCK A;LUM CHEE F |
发明人 |
YEOH THENG H.;TAN HOCK A.;LUM CHEE F. |
分类号 |
G01D5/34 |
主分类号 |
G01D5/34 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|