Double convex
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BK7 Double-Convex Lenses
BK7 double-convex lenses(DCX) has excellent transmittance during 350nm-2000nm and usually used in finite imaging application. We usually adopt BK7 glass when it’s not necessary to use the advantage of UV grade fused silica.
UV Grade Fused Silica Double Convex Lenses
UV grade fused silica double convex lenses(DCV) have excellent transmittance during 185nm-2100nm. It also has lower coefficient of thermal expansion and better uniformity compared with BK7 material.