Endoscope

Details Endoscope Endoscope

1984-07-06

1985-12-17

Grieb, William H.

Surgery

Truss

Perineal

350 9626, A61B 106

Patent

active

045586918

ABSTRACT:
An endoscope includes an indicating index disposed between an objective optical system and an image transmitter so as to be movable in cooperation with the objective optical system through a cam mechanism and a stationary reference index disposed in a path for transmitting an image of an object to be observed, so that measurements of an actual size of the object, a magnification of the objective optical system, an object distance and the like can be made in a reliable manner based on the positional relationship between the indicating index and the stationary reference index, although the objective optical system moves due to a focus adjustment operation. In addition, an endoscope is provided with a plurality of the stationary reference indexes so that the above mentioned measurements can be made in a reliable manner, although the objective optical system moves by operation of an angle of view converting apparatus.

REFERENCES:
patent: 3730632 (1973-05-01), Chikama
patent: 3817619 (1974-06-01), Kawahara
patent: 3817631 (1974-06-01), Kawahara
patent: 3817635 (1974-06-01), Kawahara
patent: 3819267 (1974-06-01), Kawahara
patent: 4271829 (1981-06-01), Heckele

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