发明名称 |
ILLUMINATION SYSTEM, IMAGE READER AND IMAGE FORMING DEVICE |
摘要 |
An illumination system includes a light source unit including light emitting elements arranged in array in a main scan direction to project light beams radially, and an optical guide of a long length made from a translucent material to guide incident beams from an exit surface of the light source unit in a certain direction for output, and including at least one surface with a diffuse structure to diffuse a transmitted beam or a reflected beam among the incident beams, wherein the diffuse structure is configured to diffuse the beam at a center at a larger divergence angle than at ends in the main scan direction.
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申请公布号 |
US2013222865(A1) |
申请公布日期 |
2013.08.29 |
申请号 |
US201313775852 |
申请日期 |
2013.02.25 |
申请人 |
IWAMATSU AKIHIRO;NAKAJIMA MITSURU;OGATA TETSUYA;FUJIMOTO TSUYOSHI;INOUE TOKIKO;TANAKA CHIHIRO |
发明人 |
IWAMATSU AKIHIRO;NAKAJIMA MITSURU;OGATA TETSUYA;FUJIMOTO TSUYOSHI;INOUE TOKIKO;TANAKA CHIHIRO |
分类号 |
F21V8/00 |
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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