Xi'an Institute of Optics and Precision Mechanics,CAS
Optical navigation system and method of estimating motion | |
其他题名 | Optical navigation system and method of estimating motion |
YAT KHENG LEONG; SAI MUN LEE; THINESHWARAN G KRISHNAN | |
2011-06-15 | |
专利权人 | PIXART IMAGING INC. |
公开日期 | 2011-06-15 |
授权国家 | 英国 |
专利类型 | 发明申请 |
摘要 | An optical navigation system 100 and method of estimating motion use a plate 236 with an aperture 244, a photodetector 242 and an optical system 240 for optical lift detection. The optical system comprises a first prism 246 to refract input light through the aperture 244, a second prism 248 to refract light reflected back through the aperture from a target surface 106, and a third prism 250 to receive light from the second prism and to refract it towards the photo detector 242. The prisms can be triangular prisms. The system further comprises a light source 214, for example a light emitting diode (LED) or a vertical-cavity surface emitting laser (VCSEL), to generate light, said input light being a portion of said light; and an image sensor 218, such as charge-coupled device (CCD) or complementary metal oxide semiconductor (CMOS), to receive another portion of light reflected from the target surface and configured to generate frames of image data for motion estimation. The system comprises an optical guide structure 216 to separate said light from said input light. The current invention provides a separate sensing mechanism to detect when an optical mouse is lifted from a target surface. |
其他摘要 | 光学导航系统100和估计运动的方法使用具有孔244的板236,光电检测器242和用于光学提升检测的光学系统240。光学系统包括:第一棱镜246,用于通过孔244折射输入光;第二棱镜248,用于折射从目标表面106通过孔反射回的光;以及第三棱镜250,用于接收来自第二棱镜的光并折射它朝向光电检测器242.棱镜可以是三角形棱镜。该系统还包括光源214,例如发光二极管(LED)或垂直腔表面发射激光器(VCSEL),以产生光,所述输入光是所述光的一部分;图像传感器218,例如电荷耦合器件(CCD)或互补金属氧化物半导体(CMOS),以接收从目标表面反射的另一部分光,并配置成产生用于运动估计的图像数据帧。该系统包括光学引导结构216,以将所述光与所述输入光分离。本发明提供了一种单独的传感机构,用于检测光学鼠标何时从目标表面抬起。 |
申请日期 | 2007-11-20 |
专利号 | GB2476186A |
专利状态 | 授权 |
申请号 | GB2011003260 |
公开(公告)号 | GB2476186A |
IPC 分类号 | G06F3/03 | G06F3/033 |
专利代理人 | - |
代理机构 | ALPHA & OMEGA |
文献类型 | 专利 |
条目标识符 | http://ir.opt.ac.cn/handle/181661/91779 |
专题 | 半导体激光器专利数据库 |
作者单位 | PIXART IMAGING INC. |
推荐引用方式 GB/T 7714 | YAT KHENG LEONG,SAI MUN LEE,THINESHWARAN G KRISHNAN. Optical navigation system and method of estimating motion. GB2476186A[P]. 2011-06-15. |
条目包含的文件 | ||||||
文件名称/大小 | 文献类型 | 版本类型 | 开放类型 | 使用许可 | ||
GB2476186A.PDF(800KB) | 专利 | 开放获取 | CC BY-NC-SA | 请求全文 |
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