Powell lenses is one kind of optical ruling lens,Xi'an Lingyue Machinery&Electr.LTD.CN supply powell lenses that divergence angle from 10¡ã to 100¡ã,the standard have 30¡ã¡¢45¡ã¡¢53¡ã¡¢60¡ã¡¢70¡ã¡¢85¡ã¡¢90¡ã. When 1 mm laser bean get through the Powell lenses,it is optimized transformed a line which is uniform,stability,straight .Lineation by Powell lenses is better than aspheric lensse,as by powell lense can cancelling central hotspot of Gaussian beams and fade-Marginal distribution. applied range l laser scriber l machining -position by makeing l building- graticule by makeing l laser scanning system customs can order by index following l divergence angle l work distance l beam wavelength or beam diameter l width of lineation Standard divergence angle materials 30¡ã BK7 45¡ã SF6 53¡ã BK7 60¡ã SF6 70¡ã SF6 85¡ã SF6 90¡ã SF6 divergence angle from 10¡ãto 90¡ã additional£ºmanufactu by customs demands