发明名称 |
LIGHT-GUIDE LIGHTS SUITABLE FOR USE IN ILLUMINATED DISPLAYS |
摘要 |
A light-guide light (1) suitable for use in illuminated displays and signs comprises a housing (3) defining an optical cavity having first and second generally parallel major faces (5, 6), and a light source (11) positioned to direct light into the optical cavity from one side. The first major face (5) comprises a material (for example, a prismatic film) having coefficients of reflection and transmission that vary with the angle at which light is incident on the material. The second major face (6) comprises a narrow-scattering reflective material having a reflectance of at least 85 %, for example a highly-efficient reflective material provided with a suitable textured pattern. |
申请公布号 |
WO03029723(A3) |
申请公布日期 |
2004.07.22 |
申请号 |
WO2002US31419 |
申请日期 |
2002.10.03 |
申请人 |
3M INNOVATIVE PROPERTIES COMPANY;WRIGHT, JOHN, C.;LEA, MICHAEL, C. |
发明人 |
WRIGHT, JOHN, C.;LEA, MICHAEL, C. |
分类号 |
F21V8/00;F21Y103/00;G09F13/16;G09F13/18 |
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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