Specification :

Powell lenses is one kind of optical ruling lens , Xi' an LingyuekejiLTD.CN supply powell lenses that divergence angle from 10° to 90°  the standard have 30°
45°
53°
60°
70°
85°
90° 
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° BK7
45° SF6
53° BK7
60° SF6
70° SF6
85° SF6
90° SF6
divergence angle from 10° to 90°
additional manufactu by customs demands