This optical arm applicable to robots is comprised of: some bent tubular parts
(1, 6, 16, 18), a straight tubular length (21) and an outlet part
(23), coupled together with the possibility of rotation; also including
some means (7) to secure the optical arm to a robot (5). The bent
tubular part (1) is mounted with the possibility of rotation on the outlet
(2) of a laser generator (3) secured to the third arm (4)
of the robot (5). Parts (1, 6, 16 and 18) have a window (28),
in each bend, equipped with some inner lugs (28) which a mirror (29)
is pressed on to by means of some springs (33) foreseen with a removable
part (32).