发明授权
- 专利标题: Optical projection encoder with patterned mask
- 专利标题(中): 具有图案掩模的光学投影编码器
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申请号: US11410679申请日: 2006-04-24
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公开(公告)号: US07378643B2公开(公告)日: 2008-05-27
- 发明人: Chee Foo Lum , Sai Mun Lee , Weng Fei Wong
- 申请人: Chee Foo Lum , Sai Mun Lee , Weng Fei Wong
- 申请人地址: SG Singapore
- 专利权人: Avago Technologies General IP Pte Ltd
- 当前专利权人: Avago Technologies General IP Pte Ltd
- 当前专利权人地址: SG Singapore
- 主分类号: G01D5/34
- IPC分类号: G01D5/34
摘要:
An Optical Projecting Encoder (“OPE”) having an emitter module for transmitting emitted optical radiation through a mask to a moving object, and a detector module for receiving reflected optical radiation from the moving object. The reflected optical radiation from the moving object may include a predetermined image cast by the mask and a surface texture image from the moving object. The OPE may include a transmissive layer covering both the emitter module and the detector module, where the transmissive layer covering the emitter module collimates the optical radiation from the emitter module, and the transmissive layer covering the detector module concentrates the optical radiation reflected from the moving object to the detector module. The detector module may include an optical navigation sensor that continuously acquires and compares predetermined images cast by the mask and surface texture images from the moving object.
公开/授权文献
- US20070246646A1 Optical projection encoder 公开/授权日:2007-10-25
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