Patent ID: 6628446
Filing Date: 2003-09-30
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, and (e) a body having a region, (f) said one radiation source being arranged to emit and direct at least one radiation beam, (g) said rotatable scan device having at least one side for receiving said one radiation beam from said one radiation source and for reflecting out 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, (h) said rotatable medium support being arranged to rotate at said angular velocity about said rotational axis of said rotatable scan device for carrying said rotatable scan lens system, (i) said one lens of said rotatable scan lens system being arranged to receive from said one side of said rotatable scan device said one rotating scan beam with substantially no relative translation between them for producing at least one focused beam, 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 so that it will move substantially over a scan range on said region, and (j) said rotatable lens 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.