PROBLEM TO BE SOLVED: To provide a lens cover that has less flare, facilitates production, and inexpensive.SOLUTION: A lens cover 20 covers both an illumination optical system emitting illumination light and an observation optical system taking in a light image, includes a first window part 21 that allows illumination light to pass therethrough, a second window part 22 taking in a light image, and a frame body 23 separating the first window part 21 from the second window part 22 and including a communication path 24 connecting the first window part 21 with the second window part 22, the frame body 23 having light-shielding properties.
