Material:BK7 and ZF2(or according to your request) Dia.:+0/-0.05 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)
