发明名称 |
SCANNING BACKLIGHT WITH SLATLESS LIGHT GUIDE |
摘要 |
A backlight includes a light guide and a first and second light source adapted for independent operation and arranged to inject a first and second light beam, respectively, into the light guide through different portions of the light injection surface. Each light source includes a lamp and a concave reflector to partially collimate light from the lamp. One major surface of the light guide includes prismatic structures that are parallel to a first axis. Another major surface of the light guide includes lenticular structures that are parallel to each other but perpendicular to the prismatic structures. The lenticular structures limit spatial spreading for light that remains in the light guide. Each light source cooperates with the light guide to provide light that is substantially laterally confined to a transverse band of the light guide, even though the light guide contains no gaps that define slats to accomplish such confinement. |
申请公布号 |
WO2012018745(A2) |
申请公布日期 |
2012.02.09 |
申请号 |
WO2011US46168 |
申请日期 |
2011.08.02 |
申请人 |
3M INNOVATIVE PROPERTIES COMPANY |
发明人 |
AHO, ERIK A.;SCHULTZ, JOHN C. |
分类号 |
G02F1/13357;G02B27/22;G02F1/1333 |
主分类号 |
G02F1/13357 |
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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