发明名称 |
LIGHTING DEVICE INCLUDING TRANSLUCENT COVER FOR DIFFUSING LIGHT FROM LIGHT SOURCE |
摘要 |
A lighting device includes a light source configured to radiate light toward a floor from a ceiling, a reflecting mirror provided around the light source, and shading angle setting element configured to define a range in which the light from the light source is radiated by setting a shading angle with respect to the light radiated from the light source. The light source, the reflecting mirror and the shading angle setting element are covered by a translucent cover. The translucent cover has an in-line transmittance. An in-line transmittance of the translucent cover of a position corresponding to an optical axis of the light source and an in-line transmittance of the translucent cover of a position deviated from the optical axis are different from each other.
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申请公布号 |
US2010124064(A1) |
申请公布日期 |
2010.05.20 |
申请号 |
US20090619701 |
申请日期 |
2009.11.17 |
申请人 |
TOSHIBA LIGHTING & TECHNOLOGY CORPORATION;KABUSHIKI KAISHA TOSHIBA |
发明人 |
OGAWA KOZO;TAKAHASHI AKIMICHI;TAKENAKA ERIKA;WATANABE HIROAKI;SHIMIZU KEIICHI;NOGI SHINJI;KUMASHIRO SHINICHI |
分类号 |
F21V7/00 |
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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