公开(公告)号：US5179934A

公开(公告)日：1993-01-19

申请号：US655678

申请日：1991-02-14

申请人： Mitsugu Nagayoshi ,  Atsushi Miyazaki ,  Hirofumi Miyanaga ,  Sakae Takehana ,  Hideyuki Adachi ,  Yasuhiro Ueda ,  Eiichi Fuse ,  Yoshisada Aoki

发明人： Mitsugu Nagayoshi ,  Atsushi Miyazaki ,  Hirofumi Miyanaga ,  Sakae Takehana ,  Hideyuki Adachi ,  Yasuhiro Ueda ,  Eiichi Fuse ,  Yoshisada Aoki

IPC分类号： A61B1/005 ,  A61B1/05 ,  A61M25/01

CPC分类号： A61B1/00183 ,  A61B1/0053 ,  A61B1/05 ,  A61M25/0138 ,  A61M25/0155

摘要： An endoscope comprises an insertion section, and this insertion section has a distal end portion, a proximal end portion, and a bendable portion located between the distal and proximal end portions. A fluid-pressure actuator is coupled to the insertion section, so as to bend the bendable portion. The fluid-pressure actuator is made up of an extensible body and an expansion-restricting member. The extensible body defines an internal space and has an extension axis along which it extends or contracts. The expansion-restricting member causes the extensible body to extend in the direction of the extension axis when a fluid is supplied into the internal space, and causes the extensible body to contract in the direction of the extensible axis when the fluid is discharged from the internal space. The bendable portion of the insertion section is bent in accordance with the extension or contraction of the extensible body.

摘要翻译： 内窥镜包括插入部，该插入部具有远端部，近端部和位于远端部与近端部之间的弯曲部。 流体压力致动器联接到插入部分，以便弯曲可弯曲部分。 流体压力致动器由可扩展体和膨胀限制构件构成。 可伸缩体定义了一个内部空间，并具有一个延伸轴线，它延伸或收缩。 膨胀限制构件使得当流体被供应到内部空间中时，可延伸体在延伸轴线的方向上延伸，并且当流体从内部排出时使可延伸体在可延伸轴线的方向上收缩 空间。 插入部的弯曲部根据伸缩体的伸缩而弯曲。

公开(公告)号：US5071229A

公开(公告)日：1991-12-10

申请号：US390402

申请日：1989-08-07

申请人： Yoshinao Oaki ,  Susumu Takahashi ,  Akira Takano ,  Hirofumi Miyanaga ,  Hisanari Simazu ,  Kimihiko Nishioka ,  Akitoshi Toda ,  Yoshisada Aoki ,  Masaru Shiraiwa ,  Akira Taniguchi

发明人： Yoshinao Oaki ,  Susumu Takahashi ,  Akira Takano ,  Hirofumi Miyanaga ,  Hisanari Simazu ,  Kimihiko Nishioka ,  Akitoshi Toda ,  Yoshisada Aoki ,  Masaru Shiraiwa ,  Akira Taniguchi

IPC分类号： G02B3/14 ,  G02F1/1345 ,  G02F1/1347 ,  G02F1/29

CPC分类号： G02F1/29 ,  A61B1/0019 ,  G02B3/08 ,  G02B3/14 ,  G02F1/1345 ,  G02F1/1347 ,  G02F2001/294

摘要： An imaging apparatus is provided with a negative lens, a variable focal length lens unit including a material with an electrooptic effect, a light blocking unit, including the material with the electrooptic effect, capable of changing an aperture diameter, and a switch, interlocked with each other, capable of supplying electric power to the variable focal length lens unit and the light blocking unit which are arranged in order on an optical axis from an object side to an image side. When the switch is turned off, the variable focal length lens unit is set to bring an object at a far point into focus and the light blocking unit is set so that an aperture is determined by an aperture stop, while on the other hand, when the switch is turned on, the variable focal length lens unit is set so that an object at a near point is in focus and the light blocking unit is set to be smaller in aperture. Apertures different in size are determined by a plurality of annular transparent electrodes incorporated in the light blocking unit and configured concentrically. Thus the imaging apparatus can be constructed to be small or compact in size and is easy in manufacturing.

摘要翻译： 成像装置设置有负透镜，包括具有电光效应的材料的可变焦距透镜单元，包括具有电光效应的材料，能够改变孔径的遮光单元以及与 彼此能够向从物侧到像侧的光轴依次配置的可变焦距透镜单元和遮光单元供电。 当开关断开时，可变焦距透镜单元被设置为使物体在远点处聚焦，并且遮光单元被设置为使得孔径由孔径光阑确定，而另一方面，当 开关被接通，可变焦距透镜单元被设置成使得近点处的物体处于焦点并且遮光单元被设定为较小的孔径。 尺寸不同的孔径由结合在遮光单元中的多个环形透明电极确定并同心配置。 因此，成像装置可以被构造成尺寸小或紧凑，并且制造容易。