发明名称 |
Brightness compensation for a lamp shade in an optical scanner |
摘要 |
An improvement of brightness compensation for a lamp shade in an optical scanner includes a plurality of projections to make a reflector in the lamp shade to form a greater curvature on its lateral sides, thus increase the light-condensing capability of the reflector, and thereby improve brilliance uniformity of a lamp tube.
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申请公布号 |
US5469303(A) |
申请公布日期 |
1995.11.21 |
申请号 |
US19940254942 |
申请日期 |
1994.06.07 |
申请人 |
UMAX DATA SYSTEMS INC. |
发明人 |
WUN, JEFFREY;SHIA, TING;GUO, FANG-MERNG |
分类号 |
F21V7/00;F21V7/18;F21V17/00;(IPC1-7):G02B27/00 |
主分类号 |
F21V7/00 |
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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