A b stract：C om b in ation of dual-surface len s，m icrolens，elliptical cylinder，fl at—fl at—cy lindri'cal lens w ere adopted in 7@*l2edXm+ ord er to m in im ize d ivergen ce an gle at the d iff erent pro cessing speed axis sen d out from L D ，an d redu ce co sts in
<B %s9Zy beam ’S resh ap in g for L D ．Sim p le deri v ation an d com pu tatio n w ere also don e w ith exp ecta tion to chan ge th e b eam