| 发明名称 | Endoscope tip part and endoscope | ||
| 摘要 | An endoscope tip part has impact resistance even when applied to a thin endoscope, and the light distribution characteristics thereof can be improved even at a wide angle of view. An endoscope tip part includes a tip part main body that is attached to the tip of an insertion section of an endoscope and a positive-power transparent-plastic tip lens that is integrated with the tip part main body through two-color molding. The tip lens is a lens that is located closest to an object, among optical elements constituting an illumination optical system of the endoscope, and the tip part main body is provided with an insertion hole into which two positive-power rear lenses that will be disposed behind the tip lens are inserted. | ||
| 申请公布号 | US9211054(B2) | 申请公布日期 | 2015.12.15 |
| 申请号 | US201314081560 | 申请日期 | 2013.11.15 |
| 申请人 | Olympus Corporation | 发明人 | Takato Hideyasu;Kamo Yuji;Tsuji Yoshifumi |
| 分类号 | G02B9/12;A61B1/00;A61B1/07;G02B23/24;A61B1/06 | 主分类号 | G02B9/12 |
| 代理机构 | Kenyon & Kenyon LLP | 代理人 | Kenyon & Kenyon LLP |
| 主权项 | 1. An endoscope tip part comprising: a tip part main body that is attached to a tip of an insertion section of an endoscope; and a positive-power transparent-plastic tip lens that is integrated with the tip part main body through two-color molding, wherein the tip lens is a lens that is located closest to an object, among optical elements constituting an illumination optical system of the endoscope; the tip part main body is provided with an insertion hole into which two positive-power rear lenses that will be disposed behind the tip lens are inserted; and one of the following conditional expression is satisfied: 6.6<d/f<7.6 (2) where: d is a distance from a tip surface of the tip lens to a surface of one of the rear lenses, closest to a light source; andf is a focal length of the entire system. | ||
| 地址 | Tokyo JP | ||