发明授权
- 专利标题： Lens-type retroreflective sheeting
- 专利标题（中）： 透镜式逆反射片
-
申请号： US917286申请日： 1997-08-25
-
公开(公告)号： US5984479A公开(公告)日： 1999-11-16
- 发明人: Katsura Ochi , Osamu Tanaka , Makoto Takeda
- 申请人： Katsura Ochi , Osamu Tanaka , Makoto Takeda
- 申请人地址： JPX Tokyo
- 专利权人： Nippon Carbide Kogyo Kabushiki Kaisha
- 当前专利权人： Nippon Carbide Kogyo Kabushiki Kaisha
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX94-259665 19940930
- 主分类号： G02B5/128
- IPC分类号： G02B5/128
摘要：
The present invention discloses lens-type retroreflective sheeting excellent in appearance and having constant thickness and desired retroreflective performance, wherein the transparent microspheres in the retroreflective layer are composed of transparent microspherical lenses (A) having a refractive index of 1.8 or more and transparent microspherical fillers (B) having a refractive index different by at least 5% from the refractive index of the lenses (A).
公开/授权文献
信息查询
