公开(公告)号：US08579803B2

公开(公告)日：2013-11-12

申请号：US13445388

申请日：2012-04-12

Applicant: Hiroaki Kinoshita ,  Atsushi Goto ,  Daisuke Akiyama ,  Takeshi Suga ,  Shinji Egami ,  Makoto Tanabe ,  Akihito Miyata ,  Takuya Takechi ,  Masao Akai

Inventor： Hiroaki Kinoshita ,  Atsushi Goto ,  Daisuke Akiyama ,  Takeshi Suga ,  Shinji Egami ,  Makoto Tanabe ,  Akihito Miyata ,  Takuya Takechi ,  Masao Akai

IPC: A61B1/04

CPC classification number: G02B23/26 ,  A61B1/0017 ,  A61B1/0055 ,  A61B1/07 ,  C03C13/046 ,  C03C25/1061 ,  C03C25/1063 ,  G02B23/2492

Abstract: An endoscope includes an insertion portion including an image pickup section, an illumination section, and a light guide inserted inside the insertion portion, the light guide including a plurality of fibers made of a glass not containing lead, the plurality of fibers guiding illuminating light from a light source apparatus to the illumination section, the light guide having a numerical aperture of 0.46 to 0.90. A core glass of a fiber have a refractive index nd of 1.56 to 1.74, and a composition of (A) 20 to 55 wt % SiO2, (B1) 0 to 4.0 wt % B2O3, (B2) neither P2O5 nor GeO2 contained, (C) 25 to 72 wt % (BaO+SrO+La2O3+Lu2O3+Ta2O5+Gd2O3+WO3), (D) 0 to 30 wt % ZnO, (E) no Al2O3 contained, (F) no ZrO2 contained, (G) neither PbO nor As2O3 contained, (H) 0 to 15 wt % (Na2O+K2O), (I) 0 to 0.050 wt % Sb2O3 and (J) 0.26 to 1.63 wt % (Na2SO4+K2SO4).

Abstract translation: 一种内窥镜，包括：插入部，包含摄影部，照明部和插入在所述插入部内的导光体的插入部，所述导光体包括由不含铅的玻璃制成的多根纤维，所述多根纤维将来自 照明部分的光源装置，光导通孔的数值孔径为0.46至0.90。 纤维的芯玻璃的折射率nd为1.56〜1.74，（A）20〜55重量％SiO 2，（B1）0〜4.0重量％B 2 O 3，（B2）的组成不包含P2O5和GeO2，（ C）25〜72重量％（BaO + SrO + La2O3 + Lu2O3 + Ta2O5 + Gd2O3 + WO3），（D）0〜30重量％ZnO，（E）不含Al2O3，（F） PbO和As2O3都不含有（H）0-15wt％（Na2O + K2O），（I）0至0.050wt％Sb2O3和（J）0.26至1.63wt％（Na2SO4 + K2SO4）。

公开(公告)号：US20120289779A1

公开(公告)日：2012-11-15

申请号：US13445388

申请日：2012-04-12

Applicant: Hiroaki Kinoshita ,  Atsushi Goto ,  Daisuke Akiyama ,  Takeshi Suga ,  Shinji Egami ,  Makoto Tanabe ,  Akihito Miyata ,  Takuya Takechi ,  Masao Akai

Inventor： Hiroaki Kinoshita ,  Atsushi Goto ,  Daisuke Akiyama ,  Takeshi Suga ,  Shinji Egami ,  Makoto Tanabe ,  Akihito Miyata ,  Takuya Takechi ,  Masao Akai

IPC: A61B1/07 ,  A61B1/05

CPC classification number: G02B23/26 ,  A61B1/0017 ,  A61B1/0055 ,  A61B1/07 ,  C03C13/046 ,  C03C25/1061 ,  C03C25/1063 ,  G02B23/2492

Abstract: An endoscope includes an insertion portion including an image pickup section, an illumination section, and a light guide inserted inside the insertion portion, the light guide including a plurality of fibers made of a glass not containing lead, the plurality of fibers guiding illuminating light from a light source apparatus to the illumination section, the light guide having a numerical aperture of 0.46 to 0.90. A core glass of a fiber have a refractive index nd of 1.56 to 1.74, and a composition of (A) 20 to 55 wt % SiO2, (B1) 0 to 4.0 wt % B2O3, (B2) neither P2O5 nor GeO2 contained, (C) 25 to 72 wt % (BaO+SrO+La2O3+Lu2O3+Ta2O5+Gd2O3+WO3), (D) 0 to 30 wt % ZnO, (E) no Al2O3 contained, (F) no ZrO2 contained, (G) neither PbO nor As2O3 contained, (H) 0 to 15 wt % (Na2O+K2O), (I) 0 to 0.050 wt % Sb2O3 and (J) 0.26 to 1.63 wt % (Na2SO4+K2SO4).

Abstract translation: 一种内窥镜，包括：插入部，包含摄影部，照明部和插入在所述插入部内的导光体的插入部，所述导光体包括由不含铅的玻璃制成的多根纤维，所述多根纤维将来自 照明部分的光源装置，光导通孔的数值孔径为0.46至0.90。 纤维的芯玻璃的折射率nd为1.56〜1.74，（A）20〜55重量％SiO 2，（B1）0〜4.0重量％B 2 O 3，（B2）的组成不包含P2O5和GeO2，（ C）25〜72重量％（BaO + SrO + La2O3 + Lu2O3 + Ta2O5 + Gd2O3 + WO3），（D）0〜30重量％ZnO，（E）不含Al2O3，（F） PbO和As2O3都不含有（H）0-15wt％（Na2O + K2O），（I）0至0.050wt％Sb2O3和（J）0.26至1.63wt％（Na2SO4 + K2SO4）。