An image relaying device (10), comprises a shaft (20), an objective lens (30) at a distal end (21) of the shaft (20), an optically transparent window region (39) in a proximal end region (16) of the image re-laying device (10), an optical system (33, 35, 36, 42) in the shaft (20), the optical system (33, 35, 36, 42) re-laying an image produced by the objective lens (30) to the proximal end region (16) in a way that the relayed image can be captured through the window region (39). The optical system's (33, 35, 36, 42) optical axis (38) at the window region (39) is orthogonal or substantially orthogonal to the optical system's (33, 35, 36, 42) optical axis (38) in the shaft (20).