| 摘要 |
PURPOSE: To provide a video-scope small in size, light in weight and simple in a magnification changing operation. CONSTITUTION: This video-scope is provided with an image pickup system consisting of an approach part 1 to be advanced into an oral cavity, a grip part 2 to be held by a doctor, a cover glass 3 for an incident window of photographic light, an objective lens 4 near the top end of the approach part 1, a CCD unit 5 and a prism mirror 6. The grip part 2 is provided with a push button 7 to be reciprocatively operated, an operation circulating mechanism 8 and an imaging device moving mechanism 9. The operation circulating mechanism 8 is provided with a rachet gear 10 and a rotary cam 11 as main components, and the imaging device moving mechanism 9 is provided with a displacement transmission gear 12 and a guide 13 as main components. Inside the grip part 2, a light source 14 for illumination and a light guide 15 are set. |
