发明名称 |
OPTICAL SHEET, PROCESS FOR PRODUCING OPTICAL SHEET, FORMED OBJECT, AND PROCESS FOR PRODUCING FORMED OBJECT |
摘要 |
An optical sheet is provided which can be easily processed into formed objects, e.g., a lightguide plate having a reduced thickness and increased area, and has a high light transmittance. Also provided are: a process for producing the optical sheet; a formed object obtained by forming a rugged pattern in a surface of the optical sheet; and a process for producing the formed object. The optical sheet is an optical sheet obtained by extruding an aromatic polycarbonate resin composition from an extruder and then cooling the extrudate at a temperature not higher than the glass transition temperature, the resin composition comprising (A) 100 parts by mass of an aromatic polycarbonate having a viscosity-average molecular weight of 22,000 or lower and (B) 0.01-1 part by mass of an antioxidant and not containing a blue dye or pigment. This optical sheet is characterized in that the optical sheet having a thickness of 0.1-1 mm has a total light transmittance of 91% or higher. |
申请公布号 |
KR20100138965(A) |
申请公布日期 |
2010.12.31 |
申请号 |
KR20107021395 |
申请日期 |
2009.03.23 |
申请人 |
IDEMITSU KOSAN CO., LTD. |
发明人 |
KAWATO HIROSHI;KOGURE MASAMI |
分类号 |
C08J5/18;B29C47/88;B29K69/00;G02B5/02 |
主分类号 |
C08J5/18 |
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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