A surgical microscope (1) includes a viewing unit (3) for viewing an
object (5) and an image projection module (7) for inputting image data
(9) into the viewing unit (3). The image projection module (7, 107, 207,
307) includes a plano-convex lens and a plano-concave lens. The image
projection module (7, 107, 207, 307) includes an image display unit (11,
111, 211, 311).