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公开(公告)号:US20080266493A1
公开(公告)日:2008-10-30
申请号:US12078478
申请日:2008-03-31
申请人: Jun Yonezawa , Eiko Kobayashi , Masahito Kuramitsu , Yuko Fukuoka , Kimihiro Kubo , Hiroshi Shirai
发明人: Jun Yonezawa , Eiko Kobayashi , Masahito Kuramitsu , Yuko Fukuoka , Kimihiro Kubo , Hiroshi Shirai
IPC分类号: G02F1/1335 , C08L33/02
CPC分类号: C08L25/10 , C08L25/12 , C08L33/06 , C08L33/12 , G02B1/04 , G02B5/3083 , C08L33/10 , C08L33/08 , C08L2666/04
摘要: An optical material having a high birefringence and a small absolute value of a photoelastic coefficient is provided by use of a resin composition for an optical material comprising a resin (a) having a positive photoelastic coefficient and a negative inherent birefringence and a resin (b) having a negative photoelastic coefficient and a negative inherent birefringence.
摘要翻译: 通过使用包含具有正光弹性系数和负固有双折射的树脂(a)的光学材料用树脂组合物和树脂(b),提供具有高双折射和小的光弹性系数绝对值的光学材料, 具有负光弹性系数和负固有双折射。
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公开(公告)号:US07985803B2
公开(公告)日:2011-07-26
申请号:US12078478
申请日:2008-03-31
申请人: Jun Yonezawa , Eiko Kobayashi , Masahito Kuramitsu , Yuko Fukuoka , Kimihiro Kubo , Hiroshi Shirai
发明人: Jun Yonezawa , Eiko Kobayashi , Masahito Kuramitsu , Yuko Fukuoka , Kimihiro Kubo , Hiroshi Shirai
CPC分类号: C08L25/10 , C08L25/12 , C08L33/06 , C08L33/12 , G02B1/04 , G02B5/3083 , C08L33/10 , C08L33/08 , C08L2666/04
摘要: An optical material having a high birefringence and a small absolute value of a photoelastic coefficient is provided by use of a resin composition for an optical material comprising a resin (a) having a positive photoelastic coefficient and a negative inherent birefringence and a resin (b) having a negative photoelastic coefficient and a negative inherent birefringence.
摘要翻译: 通过使用包含具有正光弹性系数和负固有双折射的树脂(a)的光学材料用树脂组合物和树脂(b),提供具有高双折射和小的光弹性系数绝对值的光学材料, 具有负光弹性系数和负固有双折射。
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公开(公告)号:US5993723A
公开(公告)日:1999-11-30
申请号:US925714
申请日:1997-09-09
CPC分类号: B29C45/174 , B29C45/561 , B29C2043/566 , B29C2045/567
摘要: An injection compression molding method is characterized in that a resin is injected from a resin gate provided near a recess portion of a mold corresponding to a thick rib portion, gas is injected from the thick rib portion before the mold is closed and compressed, and thereafter the resin is made to flow back from the resin gate to an injection nozzle while the mold is closed and compressed.
摘要翻译: 注射压缩成型方法的特征在于,从设置在与厚肋部相对应的模具的凹部附近的树脂浇口注入树脂,在模具闭合并压缩之前,从厚肋部喷射气体,之后 当模具闭合并压缩时,使树脂从树脂浇口流回到喷嘴。
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