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Coordinate break surface

The coordinate break surface, or break, lets you introduce decenters and tilts into the optical system. This is done by specifying a new coordinate system, in which the following surface will be defined, in terms of the coordinate system in effect where the break is inserted.

Parameters

dx
Displacement of new coordinate system in x direction, in mm.
dy
Displacement of new coordinate system in y direction, in mm.
rx
Rotation of new coordinate system about x axis, in degrees.
ry
Rotation of new coordinate system about y axis, in degrees.
rz
Rotation of new coordinate system about z axis, in degrees.
order
This parameter is zero or one, and specifies the order of translations and rotations.

The order of the displacement and rotation operations set by the order parameter. If order=0 the following surface will have coordinate axes obtained from the current axes by translation by dx and dy and then by rotation about the origin of the original coordinate system in the order x, then y, then z. If order=1 the order of transformation is reversed: First rotations are performed in order z, then y, then x, and last the translation by dx and dy.

The inverse of a coordinate break is a coordinate break with the order parameter toggled (one for zero, zero for one) and all other parameters negated.

Exception: coordinate break surfaces between the object surface and the system surface change the object coordinate system.

See also