3W 3 in 1 IR Clear Convex Lens 6 Pins 140deg High Power SMD LED Infrared Lamp Chip buy it!
$4.60
Diameter 50mm 25mm Glass Double Convex Lens Biconvex Lens buy it!
$2.50
High Quality Diameter 8mm Long Focal Length FL21mm Glass Laser Focusing Lens Optical Lenses Plano Convex Lenses Customizable buy it!
$1.41-$1.95
Quality Magnifying Glass Extra Large Optical Plastic Convex Lens Magnifying Glass buy it!
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Optics BK7 Optical Plano Convex Lens
$1.80-$6.00