公开(公告)号：US06807003B2

公开(公告)日：2004-10-19

申请号：US10025312

申请日：2001-12-19

申请人： Hiroyoshi Kobayashi ,  Kazuya Yamanaka ,  Masakatsu Ohuchi ,  Isao Doshida

发明人： Hiroyoshi Kobayashi ,  Kazuya Yamanaka ,  Masakatsu Ohuchi ,  Isao Doshida

IPC分类号： G03B2160

CPC分类号： G03B21/602

摘要： An optical sheet to be used as a screen on which an image is projected from an image projector is provided. The optical sheet is produced by joining a plurality of optical sheet members with end surfaces thereof meeting each other as joint surfaces. The optical sheet members are realized with lenticular lens sheets. Each lenticular lens sheet has lenses, which are elongated in a second direction, juxtaposed in a first direction orthogonal to the second direction. The optical properties of the optical sheet members that are slightly undulated vary cyclically in the first direction. And the optical sheet members to be joined are a selected pair of optical sheet members whose undulations are substantially identical to each other or symmetrical to each other with respect to the joint surfaces.

摘要翻译： 提供用作从图像投影仪投影图像的屏幕的光学片。 光学片通过将多个光学片部件的端面相互连接而形成为接合面。 光学片部件由双凸透镜片实现。 每个双凸透镜片具有沿与第二方向垂直的第一方向并列的第二方向的透镜。 稍微起伏的光学片构件的光学特性在第一方向上周期性地变化。 并且要接合的光学片构件是选定的一对光学片构件，其波纹​​彼此基本相同或相对于接合表面彼此对称。

公开(公告)号：US06698901B2

公开(公告)日：2004-03-02

申请号：US10025281

申请日：2001-12-19

申请人： Hiroyoshi Kobayashi ,  Kazuya Yamanaka ,  Masakatsu Ohuchi ,  Isao Doshida

发明人： Hiroyoshi Kobayashi ,  Kazuya Yamanaka ,  Masakatsu Ohuchi ,  Isao Doshida

IPC分类号： G03B2114

CPC分类号： G03B21/56

摘要： An image forming system is provided which includes an optical sheet and an image projector. The optical sheet is constructed by joining a plurality of sheet members with adjoining sheet members meeting to form a joint line. The image projector produces an image and projects the image to the optical sheet through a projection optical system. The relative positional relationship between the image projector and optical sheet is such that the optical axis of the projection optical system included in the image projector perpendicularly intersects the joint line in the optical sheet. Thus, reflection or scattering of light at the joint line is minimized.

摘要翻译： 提供了一种图像形成系统，其包括光学片和图像投影仪。 光学片通过将多个片材与邻接的片状部件接合而构成，以形成接合线。 图像投影仪产生图像并通过投影光学系统将图像投影到光学片。 图像投影仪和光学片之间的相对位置关系使得包括在图像投影仪中的投影光学系统的光轴垂直于光学片中的接合线。 因此，在接合线处的光的反射或散射最小化。