PROBLEM TO BE SOLVED: To stably and continuously perform fixed point observation to a subject.SOLUTION: An endoscope apparatus includes: a fiber 2 for passing through an optical image captured from an objective lens 1 in which the objective lens 1 is mounted to the tip end thereof a holder 31 attached to the vicinity of the tip end of the fiber 2, in which a male screw is formed on the outer periphery thereof an image conversion part for photoelectrically converting the optical image passed through the fiber 2 a monitor for receiving an electric signal photoelectrically converted by the image conversion part to display the signal as an image and a cable for transmitting the electric signal from the image conversion part to the monitor.
