Patent ID: 6958837

Claim:
Apparatus for producing picture element groups of predetermined geometric appearance in space with means ( 1 ) for producing light pulses in rapid succession, a deflection system for deflecting the light pulses for the purpose of producing picture elements ( 10 ) on a rotatable projection surface ( 6 ). means for dividing the light of the light pulses into a main beam ( 12 ) and a secondary beam ( 13 ), it being possible to produce a picture element ( 10 ) on the projection surface ( 6 ), characterized by a secondary mirror ( 14 ), arranged in the projected path of the secondary beam ( 13 ) and capable of oscillating about a rotation axis ( 15 ), said secondary mirror ( 14 ) being suitable and provided for producing, by virtue of its oscillating movements, picture elements of a linear picture element group ( 34 ), wherein the secondary mirror ( 14 ) is rotatably mounted and wherein a rotation of the rotation axis ( 15 ) of the secondary mirror ( 14 ) is suitable and provided for influencing the direction of the linear picture element group ( 34 ).