ROTATING DRUM COLLIMATOR

摘要

Exemplary embodiments of the present invention are directed to a rotating drum collimator for collimating an energy beam to produce a scanning beam that includes a drum having a substantially cylindrical sidewall with a first helical groove and a second helical groove formed in the cylindrical side wall, and a motor operatively connected to the drum, and configured to cause rotation of the drum about a longitudinal axis of the drum. Each of the first helical groove and the second helical groove comprises a first end portion, a middle portion and a second end portion, and a width of the first end portion and the second end portion of each of the first helical groove and the second helical groove is greater than the middle portion of each of the first helical groove and the second helical groove.

主权项

1. A rotating drum collimator, comprising:
a drum having a substantially cylindrical sidewall with a first helical groove and a second helical groove formed in the cylindrical side wall; and a motor operatively connected to the drum, and configured to cause rotation of the drum about a longitudinal axis of the drum; wherein each of the first helical groove and the second helical groove comprises a first end portion, a middle portion and a second end portion, and wherein a width of the first end portion and the second end portion of each of the first helical groove and the second helical groove is greater than the middle portion of each of the first helical groove and the second helical groove.