发明名称 |
OPTICAL INCOUPLING FOR TOUCH-SENSITIVE SYSTEMS |
摘要 |
A touch-sensitive apparatus comprises a light transmissive panel, an illumination arrangement and a detection arrangement. The illumination arrangement is configured to couple light into the panel via an incoupling site such that the light propagates by total internal reflection in opposite top and bottom surfaces of the panel and such that an object touching the top or bottom surface causes a change in the propagating light. The detection arrangement comprises a light detector arranged to detect the change in the propagating light. A compact and robust incoupling site is defined by a sheet-like micro-structured surface portion which is fixedly arranged on one of the top and bottom surfaces and configured to transmit light having an angle of incidence that enables light propagation by TIR inside the panel. |
申请公布号 |
EP2671141(A1) |
申请公布日期 |
2013.12.11 |
申请号 |
EP20120705510 |
申请日期 |
2012.01.30 |
申请人 |
FLATFROG LABORATORIES AB |
发明人 |
CRAVEN-BARTLE, THOMAS;BERGSTROEM, HAAKAN |
分类号 |
G06F3/042 |
主分类号 |
G06F3/042 |
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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