The invention relates to an operation light, comprising at least one light-emitting component (9) and at least one light-reflecting surface Mn and in which the light-emitting surface of the light-emitting component (9) is so arranged in the operation light that all or substantially all of the light produced by the operation light consists of light reflected from the reflecting surface, and for each light-emitting component (9) at least one substantially planar light-reflecting surface Mn is provided so that the dimensions of the light-emitting surface of each light-emitting component (9), the direction of the normal to the surface and the distance of the surface in relation to the size of the reflecting surface Mn arranged for the light-emitting component (9) in question, to the direction of the normal to the surface and to the distance of the surface from the surface (11) to be illuminated have been so arranged that the operation light produces on the surface to be illuminated a light pattern of a given shape and size wherein the light intensity in the penumbral shadow area formed at the edges of the light pattern falls in a desired manner.
