发明名称 |
LIGHT BEAM SHAPING ELEMENT FOR AN OPTICAL NAVIGATION INPUT DEVICE |
摘要 |
An optical navigation input device with a light guide which acts as a beam shaping element. The optical navigation input device includes a light source and the light guide. The light source emits a light beam having a substantially elliptical or substantially circular cross section. The light guide is positioned relative to the light source to receive the light beam from the light source in a first direction. The light guide also redirects the light beam in a second direction toward an illumination surface at a non-zero angle of incidence. The light guide directs the light beam through a refraction interface in order to illuminate a substantially circular area on the illumination surface.
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申请公布号 |
US2010214224(A1) |
申请公布日期 |
2010.08.26 |
申请号 |
US20090391439 |
申请日期 |
2009.02.24 |
申请人 |
AVAGO TECHNOLOGIES ECBU IP (SINGAPORE) PTE. LTD. |
发明人 |
DOLFI DAVID WAYNE |
分类号 |
G06F3/033 |
主分类号 |
G06F3/033 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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