Patent ID: 6522443
Filing Date: 2003-02-18
Classification: G02B

Abstract:
A scan system for writing, plotting, engraving, printing, and photolithography, comprising:(a) at least one radiation source, (b) a rotatable scan device having a rotational axis, (c) a rotatable medium support, (d) a rotatable scan lens system having at least one lens, (e) a rotatable scan reflector system having at least one reflector, and (f) a body having a region, (g) said one radiation source being arranged to emit and direct at least one radiation beam, (h) said rotatable scan device having a rotational axis and at least one side for receiving said one radiation beam from said one radiation source and for reflecting said one radiation beam as at least one rotating scan beam, and for causing said one rotating scan beam to rotate at an angular velocity about said rotational axis of said rotatable scan device, (i) said rotatable medium support being arranged to rotate at said angular velocity about said rotational axis of said rotatable scan device for carrying both said rotatable scan lens system and said rotatable scan reflector system, (j) said one reflector of said rotatable scan reflector system being arranged to receive, from said one side of said rotatable scan device, said one rotating scan beam and to reflect said one rotating scan beam toward said one lens of said rotatable scan lens system, (k) said one lens of said rotatable scan lens system being arranged to receive, from said one reflector of said rotatable scan reflector system, said one rotating scan beam with substantially no relative translation between them for producing at least one focused beam, and for directing said one focused beam onto said region to form at least one focused radiation spot, and for moving said one focused radiation spot over said region, and (l) said rotatable scan lens system, said rotatable scan reflector system, said region on said body, and said one radiation source being positioned so that they are spaced from said rotational axis and are spaced from each other.