A head-up display including a combiner and a relay optics formed from a
combination of optical elements and forming an intermediate image
projected to infinity by the combiner of a symbology emitted in a given
spectral band by an image source. The combiner forms an off-axis
convergent mirror in the spectral band, and an angle of inclination of the
off-axis convergent mirror is adjustable for a given type of equipment as
a function of a position of the image source and in a given angular range
that depends on the type of equipment. The relay optics is modular and
includes a first module with at least one optical element fixed regardless
of the type of equipment and a second module with at least one optical
element for which a position is predefined as a function of an angular
position of the combiner.
