| SLSQ-30B-40N 30.0 mm Dia. x -39.7 mm FL; Double-Concave Lens Uncoated | Optics | Lens | Spherical Lens (Concave-Concave) | OptoSigma | Fused Silica | Circular |
| SLSQ-50.8B-80N 50.8 mm Dia. x -79.5 mm FL; Double-Concave Lens Uncoated | Optics | Lens | Spherical Lens (Concave-Concave) | OptoSigma | Fused Silica | Circular |
| SLSQ-50.8B-90N 50.8 mm Dia. x -89.5 mm FL; Double-Concave Lens Uncoated | Optics | Lens | Spherical Lens (Concave-Concave) | OptoSigma | Fused Silica | Circular |
| SLSQ-50.8B-250N 50.8 mm Dia. x -249.5 mm FL; Double-Concave Lens Uncoated | Optics | Lens | Spherical Lens (Concave-Concave) | OptoSigma | Fused Silica | Circular |
| SLB-25B-25NIR1 25.0 mm Dia. x -24.7 mm FL; Coated; Double-Concave Lens 633-1064nm | Optics | Lens | Spherical Lens (Concave-Concave) | OptoSigma | N-BK7 | Circular |
| SLB-40B-40NIR1 40.0 mm Dia. x -39.7 mm FL; Coated; Double-Concave Lens 633-1064nm | Optics | Lens | Spherical Lens (Concave-Concave) | OptoSigma | N-BK7 | Circular |
| SLB-50B-60NIR1 50.0 mm Dia. x -59.5 mm FL; Coated; Double-Concave Lens 633-1064nm | Optics | Lens | Spherical Lens (Concave-Concave) | OptoSigma | N-BK7 | Circular |
| SLB-50B-100NIR1 50.0 mm Dia. x -99.5 mm FL; Coated; Double-Concave Lens 633-1064nm | Optics | Lens | Spherical Lens (Concave-Concave) | OptoSigma | N-BK7 | Circular |
| SLB-50.8B-50NIR1 50.8 mm Dia. x -49.5 mm FL; Coated; Double-Concave Lens 633-1064nm | Optics | Lens | Spherical Lens (Concave-Concave) | OptoSigma | N-BK7 | Circular |
| L-BCC060 25 mm Dia. Double-Concave Lens; EFL=-300mm Uncoated | Optics | Lens | Spherical Lens (Concave-Concave) | Ross Optical | N-BK7 | Circular |
| L-BCC065 25.4 mm Dia. Double-Concave Lens; EFL=-75mm Uncoated | Optics | Lens | Spherical Lens (Concave-Concave) | Ross Optical | N-BK7 | Circular |
| L-BCC086 38.1 mm Dia. Double-Concave Lens; EFL=-75mm Uncoated | Optics | Lens | Spherical Lens (Concave-Concave) | Ross Optical | N-BK7 | Circular |
| L-BCC093 40 mm Dia. Double-Concave Lens; EFL=-100mm Uncoated | Optics | Lens | Spherical Lens (Concave-Concave) | Ross Optical | N-BK7 | Circular |
| LB11-12-50 12.7 mm Dia. N-BK7 Double-Concave Lens; EFL=-50mm Uncoated | Optics | Lens | Spherical Lens (Concave-Concave) | CeNing Optics | N-BK7 | Circular |
| LB11-25-250 25.4 mm Dia. N-BK7 Double-Concave Lens; EFL=-250mm Uncoated | Optics | Lens | Spherical Lens (Concave-Concave) | CeNing Optics | N-BK7 | Circular |
| SLB-10B-20N 10.0 mm Dia. x -19.7 mm FL; Double-Concave Lens Uncoated | Optics | Lens | Spherical Lens (Concave-Concave) | OptoSigma | N-BK7 | Circular |
| SLB-10B-25N 10.0 mm Dia. x -24.7 mm FL; Double-Concave Lens Uncoated | Optics | Lens | Spherical Lens (Concave-Concave) | OptoSigma | N-BK7 | Circular |
| SLB-10B-50N 10.0 mm Dia. x -49.7 mm FL; Double-Concave Lens Uncoated | Optics | Lens | Spherical Lens (Concave-Concave) | OptoSigma | N-BK7 | Circular |
| SLB-15B-30N 15.0 mm Dia. x -29.7 mm FL; Double-Concave Lens Uncoated | Optics | Lens | Spherical Lens (Concave-Concave) | OptoSigma | N-BK7 | Circular |
| SLB-20B-20N 20.0 mm Dia. x -19.7 mm FL; Double-Concave Lens Uncoated | Optics | Lens | Spherical Lens (Concave-Concave) | OptoSigma | N-BK7 | Circular |
| SLB-20B-30N 20.0 mm Dia. x -29.7 mm FL; Double-Concave Lens Uncoated | Optics | Lens | Spherical Lens (Concave-Concave) | OptoSigma | N-BK7 | Circular |
| SLB-25B-50N 25.0 mm Dia. x -49.7 mm FL; Double-Concave Lens Uncoated | Optics | Lens | Spherical Lens (Concave-Concave) | OptoSigma | N-BK7 | Circular |
| SLB-25B-80N 25.0 mm Dia. x -79.7 mm FL; Double-Concave Lens Uncoated | Optics | Lens | Spherical Lens (Concave-Concave) | OptoSigma | N-BK7 | Circular |
| SLB-25.4B-200N 25.4 mm Dia. x -199.7 mm FL; Double-Concave Lens Uncoated | Optics | Lens | Spherical Lens (Concave-Concave) | OptoSigma | N-BK7 | Circular |
| SLB-50.8B-60N 50.8 mm Dia. x -59.5 mm FL; Double-Concave Lens Uncoated | Optics | Lens | Spherical Lens (Concave-Concave) | OptoSigma | N-BK7 | Circular |
| SLB-50.8B-300N 50.8 mm Dia. x -299.5 mm FL; Double-Concave Lens Uncoated | Optics | Lens | Spherical Lens (Concave-Concave) | OptoSigma | N-BK7 | Circular |
| SLSQ-25.4B-25N 25.4 mm Dia. x -24.7 mm FL; Double-Concave Lens Uncoated | Optics | Lens | Spherical Lens (Concave-Concave) | OptoSigma | Fused Silica | Circular |
| SLSQ-25.4B-150N 25.4 mm Dia. x -149.7 mm FL; Double-Concave Lens Uncoated | Optics | Lens | Spherical Lens (Concave-Concave) | OptoSigma | Fused Silica | Circular |
| 112-0245E 25.4 mm Dia. x -450 mm FL; Uncoated; Plano-Concave Lens | Optics | Lens | Spherical Lens (Plano-Concave) | EKSMA Optics | N-BK7 | Circular |
| 112-0263E 25.4 mm Dia. x -3000 mm FL; Uncoated; Plano-Concave Lens | Optics | Lens | Spherical Lens (Plano-Concave) | EKSMA Optics | N-BK7 | Circular |
| 112-0502E 50.8 mm Dia. x -75 mm FL; Uncoated; Plano-Concave Lens | Optics | Lens | Spherical Lens (Plano-Concave) | EKSMA Optics | N-BK7 | Circular |
| 112-1105E 12.7 mm Dia. x -25 mm FL; Uncoated; Plano-Concave Lens | Optics | Lens | Spherical Lens (Plano-Concave) | EKSMA Optics | UVFS | Circular |
| 112-1109E 12.7 mm Dia. x -50 mm FL; Uncoated; Plano-Concave Lens | Optics | Lens | Spherical Lens (Plano-Concave) | EKSMA Optics | UVFS | Circular |
| 112-1110E 12.7 mm Dia. x -60 mm FL; Uncoated; Plano-Concave Lens | Optics | Lens | Spherical Lens (Plano-Concave) | EKSMA Optics | UVFS | Circular |
| 112-1112E 12.7 mm Dia. x -80 mm FL; Uncoated; Plano-Concave Lens | Optics | Lens | Spherical Lens (Plano-Concave) | EKSMA Optics | UVFS | Circular |
| 112-1219E 25.4 mm Dia. x -200 mm FL; Uncoated; Plano-Concave Lens | Optics | Lens | Spherical Lens (Plano-Concave) | EKSMA Optics | UVFS | Circular |
| 112-1223E 25.4 mm Dia. x -300 mm FL; Uncoated; Plano-Concave Lens | Optics | Lens | Spherical Lens (Plano-Concave) | EKSMA Optics | UVFS | Circular |
| 112-1227E 25.4 mm Dia. x -400 mm FL; Uncoated; Plano-Concave Lens | Optics | Lens | Spherical Lens (Plano-Concave) | EKSMA Optics | UVFS | Circular |
| 112-1245E 25.4 mm Dia. x -1000 mm FL; Uncoated; Plano-Concave Lens | Optics | Lens | Spherical Lens (Plano-Concave) | EKSMA Optics | UVFS | Circular |
| 112-5115E 12.7 mm Dia. x -100 mm FL; Uncoated; Plano-Concave Lens | Optics | Lens | Spherical Lens (Plano-Concave) | EKSMA Optics | CaF2 | Circular |
| 112-5135E 12.7 mm Dia. x -500 mm FL; Uncoated; Plano-Concave Lens | Optics | Lens | Spherical Lens (Plano-Concave) | EKSMA Optics | CaF2 | Circular |
| 48-335 12.0mm Dia. x -18 FL; Uncoated; Plano-Concave Lens | Optics | Lens | Spherical Lens (Plano-Concave) | Edmund Optics | N-SF11 | Circular |
| 45-024 20.0mm Dia. x -50 FL; Uncoated; Plano-Concave Lens | Optics | Lens | Spherical Lens (Plano-Concave) | Edmund Optics | N-BK7 | Circular |
| 45-007 6.0mm Dia. x -6 FL; MgF2 Coated; Plano-Concave Lens 400-700nm | Optics | Lens | Spherical Lens (Plano-Concave) | Edmund Optics | N-SF11 | Circular |
| 45-009 6.0mm Dia. x -12 FL; MgF2 Coated; Plano-Concave Lens 400-700nm | Optics | Lens | Spherical Lens (Plano-Concave) | Edmund Optics | N-BK7 | Circular |
| 45-011 6.0mm Dia. x -18 FL; MgF2 Coated; Plano-Concave Lens 400-700nm | Optics | Lens | Spherical Lens (Plano-Concave) | Edmund Optics | N-BK7 | Circular |
| 45-379 9.0mm Dia. x -9 FL; MgF2 Coated; Plano-Concave Lens 400-700nm | Optics | Lens | Spherical Lens (Plano-Concave) | Edmund Optics | N-SF11 | Circular |
| 45-381 9.0mm Dia. x -18 FL; MgF2 Coated; Plano-Concave Lens 400-700nm | Optics | Lens | Spherical Lens (Plano-Concave) | Edmund Optics | N-SF11 | Circular |
| 48-265 6mm Dia. x -6 FL; VIS 0deg Coated; Plano-Concave Lens 425-675nm | Optics | Lens | Spherical Lens (Plano-Concave) | Edmund Optics | N-SF11 | Circular |
| 47-906 12mm Dia. x -24 FL; VIS 0deg Coated; Plano-Concave Lens 425-675nm | Optics | Lens | Spherical Lens (Plano-Concave) | Edmund Optics | N-BK7 | Circular |
| 49-531 20.0mm Dia. x -30 FL; NIR I Coated; Plano-Concave Lens 600-1050nm | Optics | Lens | Spherical Lens (Plano-Concave) | Edmund Optics | N-SF11 | Circular |
| 49-537 25.0mm Dia. x -100 FL; NIR I Coated; Plano-Concave Lens 600-1050nm | Optics | Lens | Spherical Lens (Plano-Concave) | Edmund Optics | N-BK7 | Circular |
| 49-538 3mm Dia. x -6 FL; NIR I Coated; Plano-Concave Lens 600-1050nm | Optics | Lens | Spherical Lens (Plano-Concave) | Edmund Optics | N-BK7 | Circular |
| 67-996 20mm Dia. x -30 FL; NIR II Coated; Plano-Concave Lens 750-1550nm | Optics | Lens | Spherical Lens (Plano-Concave) | Edmund Optics | N-SF11 | Circular |
| 67-997 20mm Dia. x -40 FL; NIR II Coated; Plano-Concave Lens 750-1550nm | Optics | Lens | Spherical Lens (Plano-Concave) | Edmund Optics | N-BK7 | Circular |
| 45-910 6mm Dia. x -6 FL; VIS-NIR Coated; Plano-Concave Lens 400-1000nm | Optics | Lens | Spherical Lens (Plano-Concave) | Edmund Optics | N-SF11 | Circular |
| 45-918 12mm Dia. x -48 FL; VIS-NIR Coated; Plano-Concave Lens 400-1000nm | Optics | Lens | Spherical Lens (Plano-Concave) | Edmund Optics | N-BK7 | Circular |
| 45-921 20mm Dia. x -50 FL; VIS-NIR Coated; Plano-Concave Lens 400-1000nm | Optics | Lens | Spherical Lens (Plano-Concave) | Edmund Optics | N-BK7 | Circular |
| 46-308 6.0mm Dia. x -9 FL; UV-AR Coated; UV Plano-Concave Lens 250-425nm | Optics | Lens | Spherical Lens (Plano-Concave) | Edmund Optics | Fused Silica | Circular |
| 48-324 25.0mm Dia. x -150 FL; UV-AR Coated; UV Plano-Concave Lens 250-425nm | Optics | Lens | Spherical Lens (Plano-Concave) | Edmund Optics | Fused Silica | Circular |
| 45-697 6.0mm Dia. x -9 FL; Uncoated; UV Plano-Concave Lens | Optics | Lens | Spherical Lens (Plano-Concave) | Edmund Optics | Fused Silica | Circular |
| 45-698 6.0mm Dia. x -12 FL; Uncoated; UV Plano-Concave Lens | Optics | Lens | Spherical Lens (Plano-Concave) | Edmund Optics | Fused Silica | Circular |
| 45-699 6.0mm Dia. x -18 FL; Uncoated; UV Plano-Concave Lens | Optics | Lens | Spherical Lens (Plano-Concave) | Edmund Optics | Fused Silica | Circular |
| 112-0112E 12.7 mm Dia. x -60 mm FL; Uncoated; Plano-Concave Lens | Optics | Lens | Spherical Lens (Plano-Concave) | EKSMA Optics | N-BK7 | Circular |
| 112-0123E 12.7 mm Dia. x -200mm FL; Uncoated; Plano-Concave Lens | Optics | Lens | Spherical Lens (Plano-Concave) | EKSMA Optics | N-BK7 | Circular |
| 112-0259E 25.4 mm Dia. x -1000 mm FL; Uncoated; Plano-Concave Lens | Optics | Lens | Spherical Lens (Plano-Concave) | EKSMA Optics | N-BK7 | Circular |
| 112-0409E 38.1 mm Dia. x -100 mm FL; Uncoated; Plano-Concave Lens | Optics | Lens | Spherical Lens (Plano-Concave) | EKSMA Optics | N-BK7 | Circular |
| 112-1111E 12.7 mm Dia. x -75 mm FL; Uncoated; Plano-Concave Lens | Optics | Lens | Spherical Lens (Plano-Concave) | EKSMA Optics | UVFS | Circular |
| 112-1117E 12.7 mm Dia. x -125 mm FL; Uncoated; Plano-Concave Lens | Optics | Lens | Spherical Lens (Plano-Concave) | EKSMA Optics | UVFS | Circular |
| 112-1121E 12.7 mm Dia. x -175 mm FL; Uncoated; Plano-Concave Lens | Optics | Lens | Spherical Lens (Plano-Concave) | EKSMA Optics | UVFS | Circular |
| 112-1217E 25.4 mm Dia. x -150 mm FL; Uncoated; Plano-Concave Lens | Optics | Lens | Spherical Lens (Plano-Concave) | EKSMA Optics | UVFS | Circular |
| 112-1221E 25.4 mm Dia. x -250 mm FL; Uncoated; Plano-Concave Lens | Optics | Lens | Spherical Lens (Plano-Concave) | EKSMA Optics | UVFS | Circular |
| 112-1239E 25.4 mm Dia. x -750 mm FL; Uncoated; Plano-Concave Lens | Optics | Lens | Spherical Lens (Plano-Concave) | EKSMA Optics | UVFS | Circular |
| 112-1509E 50.8 mm Dia. x -100 mm FL; Uncoated; Plano-Concave Lens | Optics | Lens | Spherical Lens (Plano-Concave) | EKSMA Optics | UVFS | Circular |
| 112-1512E 50.8 mm Dia. x -150 mm FL; Uncoated; Plano-Concave Lens | Optics | Lens | Spherical Lens (Plano-Concave) | EKSMA Optics | UVFS | Circular |
| 112-1519E 50.8 mm Dia. x -300 mm FL; Uncoated; Plano-Concave Lens | Optics | Lens | Spherical Lens (Plano-Concave) | EKSMA Optics | UVFS | Circular |
| 112-5130E 12.7 mm Dia. x -250 mm FL; Uncoated; Plano-Concave Lens | Optics | Lens | Spherical Lens (Plano-Concave) | EKSMA Optics | CaF2 | Circular |
| 112-5217E 25.4 mm Dia. x -150 mm FL; Uncoated; Plano-Concave Lens | Optics | Lens | Spherical Lens (Plano-Concave) | EKSMA Optics | CaF2 | Circular |
| 45-028 25.0mm Dia. x -50 FL; Uncoated; Plano-Concave Lens | Optics | Lens | Spherical Lens (Plano-Concave) | Edmund Optics | N-BK7 | Circular |
| 45-037 50.0mm Dia. x -100 FL; MgF2 Coated; Plano-Concave Lens 400-700nm | Optics | Lens | Spherical Lens (Plano-Concave) | Edmund Optics | N-BK7 | Circular |
| 84-377 3mm Dia. x -6 FL; VIS 0deg Coated; Plano-Concave Lens 425-675nm | Optics | Lens | Spherical Lens (Plano-Concave) | Edmund Optics | N-SF11 | Circular |
| 48-271 50mm Dia. x -100 FL; VIS 0deg Coated; Plano-Concave Lens 425-675nm | Optics | Lens | Spherical Lens (Plano-Concave) | Edmund Optics | N-BK7 | Circular |
| 48-272 50mm Dia. x -125 FL; VIS 0deg Coated; Plano-Concave Lens 425-675nm | Optics | Lens | Spherical Lens (Plano-Concave) | Edmund Optics | N-BK7 | Circular |
| 49-518 6.0mm Dia. x -12 FL; NIR I Coated; Plano-Concave Lens 600-1050nm | Optics | Lens | Spherical Lens (Plano-Concave) | Edmund Optics | N-BK7 | Circular |
| 49-519 6.0mm Dia. x -15 FL; NIR I Coated; Plano-Concave Lens 600-1050nm | Optics | Lens | Spherical Lens (Plano-Concave) | Edmund Optics | N-BK7 | Circular |
| 49-532 20.0mm Dia. x -40 FL; NIR I Coated; Plano-Concave Lens 600-1050nm | Optics | Lens | Spherical Lens (Plano-Concave) | Edmund Optics | N-BK7 | Circular |
| 49-535 25.0mm Dia. x -35 FL; NIR I Coated; Plano-Concave Lens 600-1050nm | Optics | Lens | Spherical Lens (Plano-Concave) | Edmund Optics | N-SF11 | Circular |
| 67-991 12mm Dia. x -12 FL; NIR II Coated; Plano-Concave Lens 750-1550nm | Optics | Lens | Spherical Lens (Plano-Concave) | Edmund Optics | N-SF11 | Circular |
| 67-994 12mm Dia. x -24 FL; NIR II Coated; Plano-Concave Lens 750-1550nm | Optics | Lens | Spherical Lens (Plano-Concave) | Edmund Optics | N-BK7 | Circular |
| 68-000 25mm Dia. x -35 FL; NIR II Coated; Plano-Concave Lens 750-1550nm | Optics | Lens | Spherical Lens (Plano-Concave) | Edmund Optics | N-SF11 | Circular |
| 68-004 50mm Dia. x -125 FL; NIR II Coated; Plano-Concave Lens 750-1550nm | Optics | Lens | Spherical Lens (Plano-Concave) | Edmund Optics | N-BK7 | Circular |
| 48-347 12mm Dia. x -18 FL; VIS-NIR Coated; Plano-Concave Lens 400-1000nm | Optics | Lens | Spherical Lens (Plano-Concave) | Edmund Optics | N-SF11 | Circular |
| 45-917 12mm Dia. x -24 FL; VIS-NIR Coated; Plano-Concave Lens 400-1000nm | Optics | Lens | Spherical Lens (Plano-Concave) | Edmund Optics | N-BK7 | Circular |
| 45-926 50mm Dia. x -125 FL; VIS-NIR Coated; Plano-Concave Lens 400-1000nm | Optics | Lens | Spherical Lens (Plano-Concave) | Edmund Optics | N-BK7 | Circular |
| 48-321 25.0mm Dia. x -50 FL; UV-AR Coated; UV Plano-Concave Lens 250-425nm | Optics | Lens | Spherical Lens (Plano-Concave) | Edmund Optics | Fused Silica | Circular |
| 48-322 25.0mm Dia. x -75 FL; UV-AR Coated; UV Plano-Concave Lens 250-425nm | Optics | Lens | Spherical Lens (Plano-Concave) | Edmund Optics | Fused Silica | Circular |
| 48-046 12.0mm Dia. x -25 FL; Uncoated ; UV Plano-Concave Lens | Optics | Lens | Spherical Lens (Plano-Concave) | Edmund Optics | Fused Silica | Circular |
| 48-317 25.0mm Dia. x -100 FL; Uncoated; UV Plano-Concave Lens | Optics | Lens | Spherical Lens (Plano-Concave) | Edmund Optics | Fused Silica | Circular |
| 112-0125E 12.7 mm Dia. x -250 mm FL; Uncoated; Plano-Concave Lens | Optics | Lens | Spherical Lens (Plano-Concave) | EKSMA Optics | N-BK7 | Circular |
| 112-0205E 25.4 mm Dia. x -30 mm FL; Uncoated; Plano-Concave Lens | Optics | Lens | Spherical Lens (Plano-Concave) | EKSMA Optics | N-BK7 | Circular |