2024 10 12 will exhibit on mido
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1.499/1.56 S/F Bifocal Flat Top lens
Product Name: 1.499 Bifocval Round Top lens Diameter: 70/28mm Material: CR-39 Manufactory: PPG(USA) Refractive Index(25℃): n(d)=1.499 n(e)=1.501 Abbe Value: 58 Specific Gravity(20℃): 1.32
Product Name: 1.56 Bifocval Round Top lens Diameter: 70/28mm Material: CW-55 Manufactory: CHUNGHO(Korea) Refractive Index(25℃): n(d)=1.55 n(e)=1.553 Abbe Value: 35 Specific Gravity(20℃): 1.27
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