| abstract |
(57) [Object] To provide an endoscope including an objective optical system and an imaging unit that captures an image formed by the objective optical system and outputs an image signal, the amount of light incident on the imaging unit , While blurring of the image due to insufficient depth of focus of the objective optical system is eliminated. SOLUTION: An image signal S1 of a predetermined range within an imaging range of an imaging unit 22 is determined. The PSF (point) of the objective optical system 20 is An image restoration process is performed by using a spread function (point spread function) or the like. |