Enhanced beam director with improved optics

A beam director comprising:

• a rotatable first reflector rotatable about a longitudinal axis for receiving a beam from a beam source along the longitudinal axis, the first reflector including a reflective surface at an acute angle to the longitudinal axis for reflecting the beam;
• an actuator for rotating the first reflector about the longitudinal axis, whereby the first reflector rotates and reflects the beam at a constant angle to the longitudinal axis;
• an annular second reflector encircling the first reflector, a center of the first reflector coincides with the longitudinal axis of the first reflector, constantly facing the first reflector at a constant angle;
• the second reflector configured to reflect the beam towards a work surface at a constant angle thereto;
• a beam corrector comprising a reflective surface on the second reflector for modifying the beam dimensions;
• whereby when the beam is activated and the actuator rotates the first reflector, the beam strikes the rotating first reflector rotating the beam and reflecting the beam to the second reflector, which reflects the beam to the work surface;
• the beam then following a curve path relative to the work surface, tracing out an arc on the work surface;
• wherein the reflective surface of the first and second reflectors changes the beam dimensions to a desired dimension in either a first (x′) direction or in a second perpendicular direction (y′) or in both;
• wherein the first reflective surface comprises a lying on a first plane orthogonal to a second curve lying on a second plane where the first and second planes are orthogonal and vertex's of the first and second curves meet at the longitudinal axis.
• wherein the second reflector includes a toric surface where the toric surface is a surface swept out when a function z(y) is rotated about an axis that is parallel to local y axis represented by:
• z(y)=C·y2/(1+√{square root over (1−(Asph+1)·C2·y2))}+A1·y+A2·y2+ . . . +A14·y14
• wherein the function is rotated at a distance 1/Cx′ where Cx′ is the reciprocal of the radius of the circle in the xz plane;
• wherein Asph is a value representing a departure from a sphere shape;
• wherein polynomials coefficients Aj for any j from 0 to 14 is 0 when C is non zero or when C is zero then at least one of the Aj coefficient is non zero;
• wherein the polynomial coefficients provide a higher degree of definition to the rotated function z(y);
• and
• where C is the curvature defining the rotated function.

A beam director comprising:

• a rotatable first reflector rotatable about a longitudinal axis for receiving a beam from a beam source along the longitudinal axis, the first reflector including a reflective surface at an acute angle to the longitudinal axis for reflecting the beam;
• an actuator for rotating the first reflector about the longitudinal axis, whereby the first reflector rotates and reflects the beam at a constant angle to the longitudinal axis;
• an annular second reflector encircling the first reflector, a center of the first reflector coincides with the longitudinal axis of the first reflector, constantly facing the first reflector at a constant angle;
• the second reflector configured to reflect the beam towards a work surface at a constant angle thereto;
• a beam corrector comprising a reflective surface on the second reflector for modifying the beam dimensions;
• whereby when the beam is activated and the actuator rotates the first reflector, the beam strikes the rotating first reflector rotating the beam and reflecting the beam to the second reflector, which reflects the beam to the work surface;
• the beam then following a curve path relative to the work surface, tracing out an arc on the work surface;
• wherein the reflective surface of the first and second reflectors changes the beam dimensions to a desired dimension in a first (x′) direction and in a second perpendicular direction (y′);
• wherein the first reflective surface comprises a biconic surface where the first curve is lying on a first plane orthogonal to a second curve lying on a second plane where the first and second planes are orthogonal and vertex's of the first and second curves meet at the longitudinal axis.
• wherein the second reflector includes a toric surface where the toric surface is a surface swept out when a function z(y) is rotated about an axis that is parallel to local y axis represented by z(y)