possible to provide an optical scanner without discontinuation points and an accurate scanning speed throughout the scanning area application_number US 52171207 A description fig1 a and 1 b show a rotating mirror 110 of an exemplary optical scanner according to the invention the mirror is arranged to rotate around the axis of rotation 116 fig1 b shows the mirror turned by 90 degrees compared to the fig1 a fig1 a and 1 b also show the side view and the end view of the mirror the mirror has a shape of a cylinder which is slightly tilted in relation to the axis of rotation 116 the mirror is shown as a tilted cylinder in order to better visualize the form of the mirror and the ends of the mirror are therefore oblique however it would also be possible to have edges which are perpendicular to the axis of rotation the optical scanner has an axle at the axis of rotation in which the mirror is connected the mirror may be connected to the rotating axle with e g end plates or spokes not shown in the figure fig2 a 2 b 2 c and 2 d illustrate the deflection of a reflected laser beam of an optical scanner which is similar to the scanner shown in fig1 a and 1 b fig2 a shows the mirror 210 in a basic position fig2 b shows the mirror rotated by 90 degrees fig2 c shows the mirror rotated by 180 degrees and fig2 d shows the mirror rotated by 270 degrees from the position of fig2 a.