发明名称 |
OPTICAL REFLECTOR AND SURFACE LIGHT SOURCE DEVICE |
摘要 |
<p>Disclosed is a light reflector formed of a white polyolefin film which contains a polyolefin resin and a filler and is oriented at least monoaxially to have an areal draw ratio of from 1.3 to 80 times, which has a whole ray reflectance of at least 95% and undergoes a dimensional change of at most 1.5% when left at 70°C for 300 hours, and which has a melting-starting temperature of 70°C or higher. The light reflector hardly causes brightness unevenness of the planar light source when it is built in a planar light source device and used for a long period of time.</p> |
申请公布号 |
EP1637905(A1) |
申请公布日期 |
2006.03.22 |
申请号 |
EP20040734382 |
申请日期 |
2004.05.21 |
申请人 |
YUPO CORPORATION |
发明人 |
UEDA, TAKAHIKO;KOYAMA, HIROSHI;TAKAHASHI, TOMOTSUGU |
分类号 |
G02B1/00;F21V8/00;G02B1/10;G02B5/08;G02B27/00;G02F1/13357;(IPC1-7):G02B1/00 |
主分类号 |
G02B1/00 |
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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