发明名称 |
Illumination apparatus for a digitizer tablet with improved light panel |
摘要 |
An illumination apparatus for a digitizer tablet includes a support structure and a solid sheet optical light guide supported by the support structure and having first and second opposing surfaces and a plurality of edges. Light sources are carried by the support structure and positioned to direct light into light-receiving edges of the light guide. Reflecting structure is disposed adjacent the first surface of the light guide. A predetermined pattern is disposed on the first surface of the light guide structured and arranged in accordance with distance from the light sources.
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申请公布号 |
US5736686(A) |
申请公布日期 |
1998.04.07 |
申请号 |
US19950396617 |
申请日期 |
1995.03.01 |
申请人 |
GTCO CORPORATION |
发明人 |
PERRET, JR., JOSEPH F.;ICE, DONALD A.;KAUTTER, WILLIAM J. |
分类号 |
F21V8/00;G02B6/00;G06F3/033;G06F3/048;(IPC1-7):G08C21/00;G09G3/02 |
主分类号 |
F21V8/00 |
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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