公开(公告)号：US06407868B1

公开(公告)日：2002-06-18

申请号：US09604667

申请日：2000-06-27

申请人： Kazufumi Ishibashi ,  Tetsuo Hattori ,  Kiyoshi Numazaki ,  Yasuhiro Iwaguchi ,  Shuichi Sugai ,  Tadaaki Nakamura ,  Masaaki Kusano

发明人： Kazufumi Ishibashi ,  Tetsuo Hattori ,  Kiyoshi Numazaki ,  Yasuhiro Iwaguchi ,  Shuichi Sugai ,  Tadaaki Nakamura ,  Masaaki Kusano

IPC分类号： G02B2714

CPC分类号： G02B27/149 ,  G02B5/04 ,  G02B27/1073 ,  G02B27/145 ,  G02B27/62

摘要： A cross dichroic prism comprises four triangular prisms having isosceles right triangular cross sections identical in shape, opposing side faces thereof being bonded and secured together with rectangular portions thereof facing each other; and a dichroic film having an X-shaped cross section formed between the bonding faces of the triangular prisms; wherein, of the four triangular prisms, a given prism and at least one of the prisms adjacent thereto have a refractive index difference therebetween of 0.00005 or less, and the remaining two prisms opposed thereto have a refractive index difference therebetween of 0.00005 or less.

摘要翻译： 十字分色棱镜包括具有相同形状的具有等腰直角三角形横截面的四个三角棱镜，其相对侧面与彼此面对的矩形部分结合并固定在一起; 以及在三角棱镜的接合面之间形成有X形截面的二向色膜; 其中，在四个三角棱镜中，给定的棱镜和与其相邻的棱镜中的至少一个之间的折射率差为0.00005以下，与其相对的其余两个棱镜之间的折射率差为0.00005以下。

公开(公告)号：US6101041A

公开(公告)日：2000-08-08

申请号：US145468

申请日：1998-09-02

申请人： Kazufumi Ishibashi ,  Tetsuo Hattori ,  Kiyoshi Numazaki ,  Yasuhiro Iwaguchi ,  Shuichi Sugai ,  Tadaaki Nakamura ,  Masaaki Kusano

发明人： Kazufumi Ishibashi ,  Tetsuo Hattori ,  Kiyoshi Numazaki ,  Yasuhiro Iwaguchi ,  Shuichi Sugai ,  Tadaaki Nakamura ,  Masaaki Kusano

IPC分类号： G02B5/04 ,  G02B27/14 ,  G02B27/62

CPC分类号： G02B27/149 ,  G02B27/1073 ,  G02B27/145 ,  G02B27/62 ,  G02B5/04

摘要： A cross dichroic prism comprises four triangular prisms having isosceles right triangular cross sections identical in shape, opposing side faces thereof being bonded and secured together with rectangular portions thereof facing each other; and a dichroic film having an X-shaped cross section formed between the bonding faces of the triangular prisms; wherein, of the four triangular prisms, a given prism and at least one of the prisms adjacent thereto have a refractive index difference therebetween of 0.00005 or less, and the remaining two prisms opposed thereto have a refractive index difference therebetween of 0.00005 or less.