公开(公告)号：US4916534A

公开(公告)日：1990-04-10

申请号：US187040

申请日：1988-04-27

申请人： Susumu Takhashi ,  Tsutomu Igarashi ,  Atsushi Miyazaki ,  Kimihiko Nishioka ,  Akira Hasegawa ,  Masahiro Chiba ,  Koji Takamura

发明人： Susumu Takhashi ,  Tsutomu Igarashi ,  Atsushi Miyazaki ,  Kimihiko Nishioka ,  Akira Hasegawa ,  Masahiro Chiba ,  Koji Takamura

IPC分类号： A61B1/05 ,  G02B17/08 ,  G02B23/24

CPC分类号： G02B23/2423 ,  A61B1/00096 ,  A61B1/00101 ,  A61B1/05

摘要： In order to enable to sufficiently deflect the viewing direction for a distal end having an end surface substantially perpendicular to the optical axis of an objective optical system and minimize aberrations produced due to the deflecting action, the objective optical system for endoscopes comprises at least one surface designed as a deflecting surface or an eccentric surface on the image side of the surface nearest the object to be observed out of the surfaces of the optical components composing the objective optical system so that the light is refracted at least twice for deflecting the viewing direction. In order to shorten total length and minimize outside diameter of the objective optical system and enable to sufficiently eliminate the infrared light incident from the object, the objective optical system comprises at least one optical component made of a substance absorbing the light having the oscillation frequency of the YAG laser light and interference films reflecting the light having the oscillation frequency of the YAG laser light formed on the cemented surfaces of the optical components and/or the surface of emergence of a rear group designed as a positive lens component.

摘要翻译： 为了能够使具有基本上垂直于物镜光学系统的光轴的端面的远端足够偏转观察方向，并且使由于偏转动作产生的像差最小化，内窥镜用物镜系统包括至少一个表面 被设计为在构成物镜光学系统的光学部件的表面之外最靠近被观察物体的表面的像侧上的偏转表面或偏心表面，使得光被折射至少两次以偏转观察方向。 为了缩短物镜光学系统的总长度和最小化外径，能够充分消除从物体入射的红外光，物镜光学系统包括至少一个光学部件，该光学部件由吸收具有振荡频率 反射具有形成在光学部件的胶合表面上的YAG激光的振荡频率的光和/或设计为正透镜部件的后组的出射表面的YAG激光和干涉膜。