| 摘要 |
PURPOSE:To observe the range of vision in uniform brightness, by providing plural light guides whose light direction are different, respectively. CONSTITUTION:An insertion tip part of an endoscope is constituted of an image guide 7, the first cylindrical light guide 8, and the second light guide 9 inserted into the center part of this guide 8. The tip of the image guide 7 is opposed to an image formation optical system consisting of plural lenses 11, and its read end is opposed to the eyepiece part. On the tip parts of the light guides 8, 9, a conical wedge 15 having a small hole 14 is provided, by which the tip part of the light guide 8 is bent to the outside in the diameter direction. The rear ends of the light guides are connected to the light source, and this endoscope is constituted so that eacy quantity of light can be controlled so as to equalize brightness of the part irradiated by these light guides 8, 9. |
