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Achromatic spherical lens

Product Nameú║ Achromatic spherical lens
Product Contentú║ Material:BK7 and ZF2(or according to your request)
Center thickness tolerance:+/-0.1
Surface quality: 60-40 Scratch/Dig
Surface figure:0.5-0.2
Centration < 3arc min
Chamfer:0.1-0.25*45 degrees
Design wavelength:486.1mm,587.6mm,656.3mm
(the parameter is demision of nomal lens,so specification will be changed according to different demision and material)