| 摘要 |
PURPOSE:To improve the efficiency as a light source by providing a convex lens so as to come into contact with a ball lens provided on the tip, and attaching a lamp provided with a convex lens to its rear at an interval by its focal distance. CONSTITUTION:On the tip of an optical fiber A, a ball-like lens 7 is placed, and also, a convex lens 8 is installed so as to come into contact with this ball lens. In the rear of both these lenses, a lens lamp 10 provided with a convex lens on the tip part is attached at an interval by a focal distance of the lens of the lens lamp 10, and the whole is placed in a body 3. In such a way, the optical fiber can be attached easily, it is made unnecessary to align for a focus, the diameter of the focus becomes smaller, the condensing degree becomes higher and the illuminance per unit becomes higher. |
