公开(公告)号：US5868484A

公开(公告)日：1999-02-09

申请号：US636586

申请日：1996-04-23

申请人： Masami Chikauchi ,  Naohiko Noda ,  Seiji Tachibana ,  Hiroyuki Yokokawa ,  Yasunori Hagari

发明人： Masami Chikauchi ,  Naohiko Noda ,  Seiji Tachibana ,  Hiroyuki Yokokawa ,  Yasunori Hagari

IPC分类号： G03B21/132 ,  G03B21/30 ,  G03B21/14

CPC分类号： G03B21/132 ,  G03B21/30 ,  Y10S353/03

摘要： A portable overhead projector includes a projection unit having a light source and a projection lens, a stage having a Fresnel lens which has a reflecting surface facing the projection unit, and an arm part for connecting the projection unit with the stage. The arm is sized to accommodate the projection unit and the stage when these are folded thereinto. The size of the projector when the projection unit and the stage are folded into the arm part is not substantially larger than approximately a length of 184 mm, a width of 135 mm, and a thickness of 58 mm. Since each member can be folded, it is possible to make the portable overhead projector compact so that users can conveniently carry such an overhead projector in their bags.

摘要翻译： 便携式高架投影仪包括具有光源和投影透镜的投影单元，具有面对投影单元的反射面的菲涅尔透镜的台和用于将投影单元与台相连接的臂部。 当它们折叠在其中时，臂的尺寸适于容纳投影单元和舞台。 当投影单元和台架折叠到臂部分时投影仪的尺寸基本上不大于184mm的长度，135mm的宽度和58mm的厚度。 由于每个构件可以折叠，所以可以使便携式高架投影仪紧凑，使得用户可以方便地将这种高架投影仪携带在其袋中。