发明名称 |
OPTICAL SYSTEMS FOR INFRARED TOUCH SCREENS |
摘要 |
We present optical systems suitable for focusing two substantially collimated beams or sheets of light propagating in different directions onto a common focal point. In some embodiments the optical systems comprise separate focusing elements for each beam or sheet of light, while in other embodiments the optical systems comprise a focusing element and a redirection element. The optical systems have particular application in the receive optics of infrared touch screens, where they enable the detection of additional light paths that assist in the determination of two or more simultaneous touch events.
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申请公布号 |
US2013156376(A1) |
申请公布日期 |
2013.06.20 |
申请号 |
US201113698822 |
申请日期 |
2011.05.23 |
申请人 |
CHARTERS ROBERT BRUCE;KUKULJ DAX;HOLLOWAY WARWICK TODD;ROSS DUNCAN IAN;ATKINS GRAHAM ROY |
发明人 |
CHARTERS ROBERT BRUCE;KUKULJ DAX;HOLLOWAY WARWICK TODD;ROSS DUNCAN IAN;ATKINS GRAHAM ROY |
分类号 |
G02B6/34;G02B6/26 |
主分类号 |
G02B6/34 |
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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