| 摘要 |
PROBLEM TO BE SOLVED: To provide an auto-focusing device of endoscope which enables enlarging observation of the auto-focusing area as a whole, at proximity enlargement. SOLUTION: A light-sending system which sends light to a light emitting source of the tip part of the endoscope body is composed of a light-sending lens 3, a light-emitting body and a plurality of light-sending fibers used exclusively for distance-measuring lights 6a, 6b, 6c, which are inserted into a part to be inserted inside a body and send the light of the light-emitting source to the light-sending lens 3. Therein, a plurality of distance-measuring areas (a), (b), (c) of one observed object 11 are irradiated with the AF reference beams among a plurality of the light sending fibers used exclusively for distance- measuring light 6a, 6b, 6c and distance measurement is conducted, on the basis of the plural beams of distance measuring light from the respective distance- measuring areas (a), (b), (c). |
