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FS Biconvex Lenses

FS Biconvex Lenses
  • have positive focal lengths
  • converge incident light
  • form both real and virtual images
  • minimize spherical aberration as well as cancel coma and distortion at unit conjugate ratio


Biconvex lenses are all symmetrical, having equal radii on both sides. They are recommended for virtual imaging of real objects, and for positive conjugate ratios from 0.2 up to 5. Outside of this ratios range plano-convex lenses are usually more suitable. Biconvex lenses are used as magnifiers, objectives, some condensing systems.
Since both surfaces contribute to the power of biconvex lenses, they have shorter focal lengths than plano-convex lenses of equal diameter and surface radius.
Lenses may be anti-reflection coated. For required coating please refer to COATINGS section.
We can supply custom cutting, edging, coating or complete fabrication if required.

Code Diameter - Metric Diameter - English Focal Length Centre thickness Edge thickness Item price, USD In stock Choose diameter Add to cart
111-3104 12,5 mm 12,7 mm F 12,7 mm CT - 6 mm ET - 1,8 mm 52.- Request ME Add to cart
111-3108 12,5 mm 12,7 mm F 25 mm CT - 3,5 mm ET - 1,8 mm 52.- Request ME Add to cart
111-3114 12,5 mm 12,7 mm F 50 mm CT - 3 mm ET - 2,1 mm 52.- Request ME Add to cart
111-3118 12,5 mm 12,7 mm F 75 mm CT - 2,5 mm ET - 1,9 mm 52.- Request ME Add to cart
111-3122 12,5 mm 12,7 mm F 100 mm CT - 2,3 mm ET - 1,9 mm 52.- Request ME Add to cart
111-3126 12,5 mm 12,7 mm F 150 mm CT - 2,2 mm ET - 1,9 mm 52.- Request ME Add to cart
111-3204 25 mm 25,4 mm F 25 mm CT - 10 mm ET - 2,4 mm 75.- Request ME Add to cart
111-3207 25 mm 25,4 mm F 40 mm CT - 7,1 mm ET - 2,1 mm 75.- Request ME Add to cart
111-3210 25 mm 25,4 mm F 50 mm CT - 6 mm ET - 2,5 mm 75.- Request ME Add to cart
111-3214 25 mm 25,4 mm F 75 mm CT - 4 mm ET - 1,7 mm 75.- Request ME Add to cart
111-3218 25 mm 25,4 mm F 100 mm CT - 4 mm ET - 2,3 mm 72.- Request ME Add to cart
111-3222 25 mm 25,4 mm F 150 mm CT - 3,2 mm ET - 2,1 mm 72.- Request ME Add to cart
111-3226 25 mm 25,4 mm F 200 mm CT - 3 mm ET - 2,2 mm 72.- Request ME Add to cart
111-3230 25 mm 25,4 mm F 250 mm CT - 3 mm ET - 2,3 mm 72.- Request ME Add to cart
111-3234 25 mm 25,4 mm F 300 mm CT - 3 mm ET - 2,6 mm 72.- Request ME Add to cart
111-3238 25 mm 25,4 mm F 400 mm CT - 3 mm ET - 2,7 mm 72.- Request ME Add to cart
111-3240 25 mm 25,4 mm F 500 mm CT - 3 mm ET - 2,7 mm 72.- Request ME Add to cart
111-3250 25 mm 25,4 mm F 750 mm CT - 3 mm ET - 2,9 mm 72.- Request ME Add to cart
111-3260 25 mm 25,4 mm F 1000mm CT - 3 mm ET - 2,8 mm 72.- Request ME Add to cart
111-3404 40 mm 38,1 mm F 50 mm CT - 11 mm ET - 1,9 mm 123.- Request ME Add to cart
111-3410 40 mm 38,1 mm F 100 mm CT - 5 mm ET - 1,5 mm 119.- Request ME Add to cart
111-3414 40 mm 38,1 mm F 150 mm CT - 5 mm ET - 2,1 mm 119.- In stock ME Add to cart
111-3418 40 mm 38,1 mm F 200 mm CT - 5 mm ET - 2,8 mm 119.- In stock ME Add to cart
111-3422 40 mm 38,1 mm F 250 mm CT - 4 mm ET - 2,3 mm 119.- Request ME Add to cart
111-3426 40 mm 38,1 mm F 300 mm CT - 5 mm ET - 3,5 mm 119.- Request ME Add to cart
111-3430 40 mm 38,1 mm F 400 mm CT - 5 mm ET - 3,9 mm 119.- Request ME Add to cart
111-3434 40 mm 38,1 mm F 500 mm CT - 5 mm ET - 4,1 mm 116.- Request ME Add to cart
111-3440 40 mm 38,1 mm F 700 mm CT - 5 mm ET - 4,4 mm 116.- Request ME Add to cart
111-3460 40 mm 38,1 mm F 1000mm CT - 4,7 mm ET - 4,3 mm 116.- Request ME Add to cart
111-3504 50 mm 50,8 mm F 50 mm CT-16,2mm ET - 1 mm 160.- In stock ME Add to cart
111-3508 50 mm 50,8 mm F 75 mm CT-10,3mm ET - 1,1 mm 160.- Request ME Add to cart
111-3514 50 mm 50,8 mm F 100 mm CT - 10 mm ET - 2,9 mm 160.- Request ME Add to cart
111-3517 50 mm 50,8 mm F 150 mm CT - 7,5 mm ET - 3 mm 160.- Request ME Add to cart
111-3520 50 mm 50,8 mm F 175 mm CT - 6,6 mm ET - 3 mm 160.- Request ME Add to cart
111-3522 50 mm 50,8 mm F 200 mm CT - 7 mm ET - 3,5 mm 159.- Request ME Add to cart
111-3526 50 mm 50,8 mm F 250 mm CT - 6 mm ET - 3,8 mm 159.- Request ME Add to cart
111-3530 50 mm 50,8 mm F 300 mm CT - 6 mm ET - 4 mm 159.- Request ME Add to cart
111-3534 50 mm 50,8 mm F 500 mm CT - 6 mm ET - 4,8 mm 159.- Request ME Add to cart
111-3550 50 mm 50,8 mm F 1000mm CT - 6 mm ET - 5,4 mm 159.- Request ME Add to cart
For metric dimensions please add to catalogue number code M, for English – code E.

All prices are FCA Vilnius.
Prices are valid only for direct orders. For orders via distributors contact them directly.
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