| 32-994 25mm Dia. x -100mm FL; Uncoated; Double-Concave Lens | Optics | Lens | Spherical Lens (Concave-Concave) | Edmund Optics | N-BK7 | Circular |
| 48-699 6mm Dia. x -12mm FL; VIS-NIR Coated; Double-Concave Lens 400-1000nm | Optics | Lens | Spherical Lens (Concave-Concave) | Edmund Optics | N-BK7 | Circular |
| 48-701 12mm Dia. x -24mm FL; VIS-NIR Coated; Double-Concave Lens 400-1000nm | Optics | Lens | Spherical Lens (Concave-Concave) | Edmund Optics | N-BK7 | Circular |
| 45-931 25mm Dia. x -50mm FL; VIS-NIR Coated; Double-Concave Lens 400-1000nm | Optics | Lens | Spherical Lens (Concave-Concave) | Edmund Optics | N-BK7 | Circular |
| 49-549 20mm Dia. x -20mm FL; NIR I Coated; Double-Concave Lens 600-1050nm | Optics | Lens | Spherical Lens (Concave-Concave) | Edmund Optics | N-SF11 | Circular |
| 49-551 25mm Dia. x -50mm FL; NIR I Coated; Double-Concave Lens 600-1050nm | Optics | Lens | Spherical Lens (Concave-Concave) | Edmund Optics | N-BK7 | Circular |
| 49-552 25mm Dia. x -100mm FL; NIR I Coated; Double-Concave Lens 600-1050nm | Optics | Lens | Spherical Lens (Concave-Concave) | Edmund Optics | N-BK7 | Circular |
| 68-012 12mm Dia. x -18mm FL; NIR II Coated; Double-Concave Lens 750-1550nm | Optics | Lens | Spherical Lens (Concave-Concave) | Edmund Optics | N-BK7 | Circular |
| 48-331 25mm Dia. x -100mm FL; UV-AR Coated; UV DCV Lens 250-425nm | Optics | Lens | Spherical Lens (Concave-Concave) | Edmund Optics | Fused Silica | Circular |
| 114-0214E 25.4 mm Dia. x -100 mm FL; Uncoated; Double-Concave Lens | Optics | Lens | Spherical Lens (Concave-Concave) | EKSMA Optics | N-BK7 | Circular |
| SLB-15B-50NIR2 15.0 mm Dia. x -49.7 mm FL; Coated; Double-Concave Lens 750-1550nm | Optics | Lens | Spherical Lens (Concave-Concave) | OptoSigma | N-BK7 | Circular |
| SLB-20B-40NIR2 20.0 mm Dia. x -39.7 mm FL; Coated; Double-Concave Lens 750-1550nm | Optics | Lens | Spherical Lens (Concave-Concave) | OptoSigma | N-BK7 | Circular |
| SLB-20B-50NIR2 20.0 mm Dia. x -49.7 mm FL; Coated; Double-Concave Lens 750-1550nm | Optics | Lens | Spherical Lens (Concave-Concave) | OptoSigma | N-BK7 | Circular |
| SLB-30B-40NIR2 30.0 mm Dia. x -39.7 mm FL; Coated; Double-Concave Lens 750-1550nm | Optics | Lens | Spherical Lens (Concave-Concave) | OptoSigma | N-BK7 | Circular |
| SLB-25.4B-80NIR2 25.4 mm Dia. x -79.7 mm FL; Coated; Double-Concave Lens 750-1550nm | Optics | Lens | Spherical Lens (Concave-Concave) | OptoSigma | N-BK7 | Circular |
| SLB-50B-60NIR2 50.0 mm Dia. x -59.5 mm FL; Coated; Double-Concave Lens 750-1550nm | Optics | Lens | Spherical Lens (Concave-Concave) | OptoSigma | N-BK7 | Circular |
| LD7902-E3 25.4 mm Dia. ZnSe Double-Concave Lens; EFL=-200mm 7-12µm | Optics | Lens | Spherical Lens (Concave-Concave) | Thorlabs | ZnSe | Circular |
| LF4986 25.4 mm Dia. UVFS Negative Meniscus Lens; EFL=-1000mm Uncoated | Optics | Lens | Spherical Lens (Concave-Convex) | Thorlabs | UVFS | Circular |
| LF5067-E 12.7 mm Dia. CaF2 Negative Meniscus Lens; EFL=-20mm 2-5µm | Optics | Lens | Spherical Lens (Concave-Convex) | Thorlabs | CaF2 | Circular |
| LF5154-E 12.7 mm Dia. CaF2 Negative Meniscus Lens; EFL=-80mm 2-5µm | Optics | Lens | Spherical Lens (Concave-Convex) | Thorlabs | CaF2 | Circular |
| LF5515-E 25.4 mm Dia. CaF2 Negative Meniscus Lens; EFL=-100mm 2-5µm | Optics | Lens | Spherical Lens (Concave-Convex) | Thorlabs | CaF2 | Circular |
| LF5807-E 25.4 mm Dia. CaF2 Negative Meniscus Lens; EFL=-750mm 2-5µm | Optics | Lens | Spherical Lens (Concave-Convex) | Thorlabs | CaF2 | Circular |
| LF5394-E 25.4 mm Dia. CaF2 Negative Meniscus Lens; EFL=-1000mm 2-5µm | Optics | Lens | Spherical Lens (Concave-Convex) | Thorlabs | CaF2 | Circular |
| LF1015 25.4 mm Dia. N-BK7 Negative Meniscus Lens; EFL=-300mm Uncoated | Optics | Lens | Spherical Lens (Concave-Convex) | Thorlabs | N-BK7 | Circular |
| LF1015-A 25.4 mm Dia. N-BK7 Negative Meniscus Lens; EFL=-300mm 350-700nm | Optics | Lens | Spherical Lens (Concave-Convex) | Thorlabs | N-BK7 | Circular |
| MNN203 25.4 mm Dia. N-BK7 Negative Meniscus Lens; EFL=-200mm Uncoated | Optics | Lens | Spherical Lens (Concave-Convex) | WTS Photonics | N-BK7 | Circular |
| MNN204 25.4 mm Dia. N-BK7 Negative Meniscus Lens; EFL=-250mm Uncoated | Optics | Lens | Spherical Lens (Concave-Convex) | WTS Photonics | N-BK7 | Circular |
| LM11-25-100 25.4 mm Dia. N-BK7 Negative Meniscus Lens; EFL=-100mm Uncoated | Optics | Lens | Spherical Lens (Concave-Convex) | CeNing Optics | N-BK7 | Circular |
| LM11-25-600 25.4 mm Dia. N-BK7 Negative Meniscus Lens; EFL=-600mm Uncoated | Optics | Lens | Spherical Lens (Concave-Convex) | CeNing Optics | N-BK7 | Circular |
| LF7601-F 25.4 mm Dia. ZnSe Negative Meniscus Lens; EFL=-50mm 8-12µm | Optics | Lens | Spherical Lens (Concave-Convex) | Thorlabs | ZnSe | Circular |
| LE4329 25.4 mm Dia. UVFS Positive Meniscus Lens; EFL=300mm Uncoated | Optics | Lens | Spherical Lens (Convex-Concave) | Thorlabs | UVFS | Circular |
| LE5382 25.4 mm Dia. CaF2 Positive Meniscus Lens; EFL=150mm Uncoated | Optics | Lens | Spherical Lens (Convex-Concave) | Thorlabs | CaF2 | Circular |
| LE5801-E 25.4 mm Dia. CaF2 Positive Meniscus Lens; EFL=50mm 2-5µm | Optics | Lens | Spherical Lens (Convex-Concave) | Thorlabs | CaF2 | Circular |
| LE5990-E 25.4 mm Dia. CaF2 Positive Meniscus Lens; EFL=500mm 2-5µm | Optics | Lens | Spherical Lens (Convex-Concave) | Thorlabs | CaF2 | Circular |
| LE5656-E 25.4 mm Dia. CaF2 Positive Meniscus Lens; EFL=750mm 2-5µm | Optics | Lens | Spherical Lens (Convex-Concave) | Thorlabs | CaF2 | Circular |
| LE1156-C 25.4 mm Dia. N-BK7 Positive Meniscus Lens; EFL=125mm 1050-1700nm | Optics | Lens | Spherical Lens (Convex-Concave) | Thorlabs | N-BK7 | Circular |
| LE1929-B 25.4 mm Dia. N-BK7 Positive Meniscus Lens; EFL=300mm 650-1050nm | Optics | Lens | Spherical Lens (Convex-Concave) | Thorlabs | N-BK7 | Circular |
| LE1076-A 50.8 mm Dia. N-BK7 Positive Meniscus Lens; EFL=100mm 350-700nm | Optics | Lens | Spherical Lens (Convex-Concave) | Thorlabs | N-BK7 | Circular |
| LE1418-C 50.8 mm Dia. N-BK7 Positive Meniscus Lens; EFL=150mm 1050-1700nm | Optics | Lens | Spherical Lens (Convex-Concave) | Thorlabs | N-BK7 | Circular |
| LE1015-B 50.8 mm Dia. N-BK7 Positive Meniscus Lens; EFL=200mm 650-1050nm | Optics | Lens | Spherical Lens (Convex-Concave) | Thorlabs | N-BK7 | Circular |
| LE1613 50.8 mm Dia. N-BK7 Positive Meniscus Lens; EFL=250mm Uncoated | Optics | Lens | Spherical Lens (Convex-Concave) | Thorlabs | N-BK7 | Circular |
| 87-956 25 mm Dia. Germanium Positive Meniscus Lens; EFL=30mm Uncoated | Optics | Lens | Spherical Lens (Convex-Concave) | Edmund Optics | Germanium | Circular |
| 87-970 50 mm Dia. Germanium Positive Meniscus Lens; EFL=50mm BBAR 8-12µm | Optics | Lens | Spherical Lens (Convex-Concave) | Edmund Optics | Germanium | Circular |
| MNP203 25.4 mm Dia. N-BK7 Positive Meniscus Lens; EFL=200mm Uncoated | Optics | Lens | Spherical Lens (Convex-Concave) | WTS Photonics | N-BK7 | Circular |
| MNP207 25.4 mm Dia. N-BK7 Positive Meniscus Lens; EFL=500mm Uncoated | Optics | Lens | Spherical Lens (Convex-Concave) | WTS Photonics | N-BK7 | Circular |
| LM01-25-250 25.4 mm Dia. N-BK7 Positive Meniscus Lens; EFL=250mm Uncoated | Optics | Lens | Spherical Lens (Convex-Concave) | CeNing Optics | N-BK7 | Circular |
| SLB-40B-40NIR2 40.0 mm Dia. x -39.7 mm FL; Coated; Double-Concave Lens 750-1550nm | Optics | Lens | Spherical Lens (Concave-Concave) | OptoSigma | N-BK7 | Circular |
| SLB-50B-50NIR2 50.0 mm Dia. x -49.5 mm FL; Coated; Double-Concave Lens 750-1550nm | Optics | Lens | Spherical Lens (Concave-Concave) | OptoSigma | N-BK7 | Circular |
| SLB-50.8B-50NIR2 50.8 mm Dia. x -49.5 mm FL; Coated; Double-Concave Lens 750-1550nm | Optics | Lens | Spherical Lens (Concave-Concave) | OptoSigma | N-BK7 | Circular |
| SLB-50.8B-60NIR2 50.8 mm Dia. x -59.5 mm FL; Coated; Double-Concave Lens 750-1550nm | Optics | Lens | Spherical Lens (Concave-Concave) | OptoSigma | N-BK7 | Circular |
| SLB-50.8B-300NIR2 50.8 mm Dia. x -299.5 mm FL; Coated; Double-Concave Lens 750-1550nm | Optics | Lens | Spherical Lens (Concave-Concave) | OptoSigma | N-BK7 | Circular |
| 114-0106E 12.7 mm Dia. x -25 mm FL; Uncoated; Double-Concave Lens | Optics | Lens | Spherical Lens (Concave-Concave) | EKSMA Optics | N-BK7 | Circular |
| LF4938 25.4 mm Dia. UVFS Negative Meniscus Lens; EFL=-100mm Uncoated | Optics | Lens | Spherical Lens (Concave-Convex) | Thorlabs | UVFS | Circular |
| LF5847 12.7 mm Dia. CaF2 Negative Meniscus Lens; EFL=-50mm Uncoated | Optics | Lens | Spherical Lens (Concave-Convex) | Thorlabs | CaF2 | Circular |
| LF5414 25.4 mm Dia. CaF2 Negative Meniscus Lens; EFL=-50mm Uncoated | Optics | Lens | Spherical Lens (Concave-Convex) | Thorlabs | CaF2 | Circular |
| LF5469-E 25.4 mm Dia. CaF2 Negative Meniscus Lens; EFL=-40mm 2-5µm | Optics | Lens | Spherical Lens (Concave-Convex) | Thorlabs | CaF2 | Circular |
| LF5048-E 25.4 mm Dia. CaF2 Negative Meniscus Lens; EFL=-500mm 2-5µm | Optics | Lens | Spherical Lens (Concave-Convex) | Thorlabs | CaF2 | Circular |
| LF1988 25.4 mm Dia. N-BK7 Negative Meniscus Lens; EFL=-500mm Uncoated | Optics | Lens | Spherical Lens (Concave-Convex) | Thorlabs | N-BK7 | Circular |
| LF1822-A 25.4 mm Dia. N-BK7 Negative Meniscus Lens; EFL=-100mm 350-700nm | Optics | Lens | Spherical Lens (Concave-Convex) | Thorlabs | N-BK7 | Circular |
| LF1547-A 25.4 mm Dia. N-BK7 Negative Meniscus Lens; EFL=-150mm 350-700nm | Optics | Lens | Spherical Lens (Concave-Convex) | Thorlabs | N-BK7 | Circular |
| LF1141-B 25.4 mm Dia. N-BK7 Negative Meniscus Lens; EFL=-1000mm 650-1050nm | Optics | Lens | Spherical Lens (Concave-Convex) | Thorlabs | N-BK7 | Circular |
| LF1544-C 25.4 mm Dia. N-BK7 Negative Meniscus Lens; EFL=-400mm 1050-1700nm | Optics | Lens | Spherical Lens (Concave-Convex) | Thorlabs | N-BK7 | Circular |
| MNN205 25.4 mm Dia. N-BK7 Negative Meniscus Lens; EFL=-300mm Uncoated | Optics | Lens | Spherical Lens (Concave-Convex) | WTS Photonics | N-BK7 | Circular |
| LM11-25-150 25.4 mm Dia. N-BK7 Negative Meniscus Lens; EFL=-150mm Uncoated | Optics | Lens | Spherical Lens (Concave-Convex) | CeNing Optics | N-BK7 | Circular |
| LF7733-F 25.4 mm Dia. ZnSe Negative Meniscus Lens; EFL=-25.4mm 8-12µm | Optics | Lens | Spherical Lens (Concave-Convex) | Thorlabs | ZnSe | Circular |
| LF7321-F 25.4 mm Dia. ZnSe Negative Meniscus Lens; EFL=-200mm 8-12µm | Optics | Lens | Spherical Lens (Concave-Convex) | Thorlabs | ZnSe | Circular |
| LE4950 25.4 mm Dia. UVFS Positive Meniscus Lens; EFL=1000mm Uncoated | Optics | Lens | Spherical Lens (Convex-Concave) | Thorlabs | UVFS | Circular |
| LE5802 25.4 mm Dia. CaF2 Positive Meniscus Lens; EFL=75mm Uncoated | Optics | Lens | Spherical Lens (Convex-Concave) | Thorlabs | CaF2 | Circular |
| LE5414 25.4 mm Dia. CaF2 Positive Meniscus Lens; EFL=200mm Uncoated | Optics | Lens | Spherical Lens (Convex-Concave) | Thorlabs | CaF2 | Circular |
| LE5802-E 25.4 mm Dia. CaF2 Positive Meniscus Lens; EFL=75mm 2-5µm | Optics | Lens | Spherical Lens (Convex-Concave) | Thorlabs | CaF2 | Circular |
| LE1234-C 25.4 mm Dia. N-BK7 Positive Meniscus Lens; EFL=100mm 1050-1700nm | Optics | Lens | Spherical Lens (Convex-Concave) | Thorlabs | N-BK7 | Circular |
| LE1104 25.4 mm Dia. N-BK7 Positive Meniscus Lens; EFL=150mm Uncoated | Optics | Lens | Spherical Lens (Convex-Concave) | Thorlabs | N-BK7 | Circular |
| LE1015-A 50.8 mm Dia. N-BK7 Positive Meniscus Lens; EFL=200mm 350-700nm | Optics | Lens | Spherical Lens (Convex-Concave) | Thorlabs | N-BK7 | Circular |
| LE1613-C 50.8 mm Dia. N-BK7 Positive Meniscus Lens; EFL=250mm 1050-1700nm | Optics | Lens | Spherical Lens (Convex-Concave) | Thorlabs | N-BK7 | Circular |
| LE1985-A 50.8 mm Dia. N-BK7 Positive Meniscus Lens; EFL=300mm 350-700nm | Optics | Lens | Spherical Lens (Convex-Concave) | Thorlabs | N-BK7 | Circular |
| LE1985-B 50.8 mm Dia. N-BK7 Positive Meniscus Lens; EFL=300mm 650-1050nm | Optics | Lens | Spherical Lens (Convex-Concave) | Thorlabs | N-BK7 | Circular |
| 87-957 25 mm Dia. Germanium Positive Meniscus Lens; EFL=35mm Uncoated | Optics | Lens | Spherical Lens (Convex-Concave) | Edmund Optics | Germanium | Circular |
| 87-960 50 mm Dia. Germanium Positive Meniscus Lens; EFL=100mm Uncoated | Optics | Lens | Spherical Lens (Convex-Concave) | Edmund Optics | Germanium | Circular |
| MNP201 25.4 mm Dia. N-BK7 Positive Meniscus Lens; EFL=100mm Uncoated | Optics | Lens | Spherical Lens (Convex-Concave) | WTS Photonics | N-BK7 | Circular |
| MNP206 25.4 mm Dia. N-BK7 Positive Meniscus Lens; EFL=400mm Uncoated | Optics | Lens | Spherical Lens (Convex-Concave) | WTS Photonics | N-BK7 | Circular |
| SLB-25.4B-70NIR2 25.4 mm Dia. x -69.7 mm FL; Coated; Double-Concave Lens 750-1550nm | Optics | Lens | Spherical Lens (Concave-Concave) | OptoSigma | N-BK7 | Circular |
| SLB-25.4B-150NIR2 25.4 mm Dia. x -149.7 mm FL; Coated; Double-Concave Lens 750-1550nm | Optics | Lens | Spherical Lens (Concave-Concave) | OptoSigma | N-BK7 | Circular |
| SLB-30B-30NIR2 30.0 mm Dia. x -29.7 mm FL; Coated; Double-Concave Lens 750-1550nm | Optics | Lens | Spherical Lens (Concave-Concave) | OptoSigma | N-BK7 | Circular |
| SLB-40B-50NIR2 40.0 mm Dia. x -49.7 mm FL; Coated; Double-Concave Lens 750-1550nm | Optics | Lens | Spherical Lens (Concave-Concave) | OptoSigma | N-BK7 | Circular |
| SLB-50B-100NIR2 50.0 mm Dia. x -99.5 mm FL; Coated; Double-Concave Lens 750-1550nm | Optics | Lens | Spherical Lens (Concave-Concave) | OptoSigma | N-BK7 | Circular |
| LD7877-E3 25.4 mm Dia. ZnSe Double-Concave Lens; EFL=-75mm 7-12µm | Optics | Lens | Spherical Lens (Concave-Concave) | Thorlabs | ZnSe | Circular |
| LF5154 12.7 mm Dia. CaF2 Negative Meniscus Lens; EFL=-80mm Uncoated | Optics | Lens | Spherical Lens (Concave-Convex) | Thorlabs | CaF2 | Circular |
| LF5048 25.4 mm Dia. CaF2 Negative Meniscus Lens; EFL=-500mm Uncoated | Optics | Lens | Spherical Lens (Concave-Convex) | Thorlabs | CaF2 | Circular |
| LF5847-E 12.7 mm Dia. CaF2 Negative Meniscus Lens; EFL=-50mm 2-5µm | Optics | Lens | Spherical Lens (Concave-Convex) | Thorlabs | CaF2 | Circular |
| LF1141-A 25.4 mm Dia. N-BK7 Negative Meniscus Lens; EFL=-1000mm 350-700nm | Optics | Lens | Spherical Lens (Concave-Convex) | Thorlabs | N-BK7 | Circular |
| LF1988-B 25.4 mm Dia. N-BK7 Negative Meniscus Lens; EFL=-500mm 650-1050nm | Optics | Lens | Spherical Lens (Concave-Convex) | Thorlabs | N-BK7 | Circular |
| LF1097-C 25.4 mm Dia. N-BK7 Negative Meniscus Lens; EFL=-200mm 1050-1700nm | Optics | Lens | Spherical Lens (Concave-Convex) | Thorlabs | N-BK7 | Circular |
| MNN206 25.4 mm Dia. N-BK7 Negative Meniscus Lens; EFL=-400mm Uncoated | Optics | Lens | Spherical Lens (Concave-Convex) | WTS Photonics | N-BK7 | Circular |
| LM11-25-300 25.4 mm Dia. N-BK7 Negative Meniscus Lens; EFL=-300mm Uncoated | Optics | Lens | Spherical Lens (Concave-Convex) | CeNing Optics | N-BK7 | Circular |
| LF7785-F 25.4 mm Dia. ZnSe Negative Meniscus Lens; EFL=-100mm 8-12µm | Optics | Lens | Spherical Lens (Concave-Convex) | Thorlabs | ZnSe | Circular |
| LF7573-F 25.4 mm Dia. ZnSe Negative Meniscus Lens; EFL=-1000mm 8-12µm | Optics | Lens | Spherical Lens (Concave-Convex) | Thorlabs | ZnSe | Circular |
| LE5801 25.4 mm Dia. CaF2 Positive Meniscus Lens; EFL=50mm Uncoated | Optics | Lens | Spherical Lens (Convex-Concave) | Thorlabs | CaF2 | Circular |
| LE5803 25.4 mm Dia. CaF2 Positive Meniscus Lens; EFL=100mm Uncoated | Optics | Lens | Spherical Lens (Convex-Concave) | Thorlabs | CaF2 | Circular |
| LE5714-E 25.4 mm Dia. CaF2 Positive Meniscus Lens; EFL=1000mm 2-5µm | Optics | Lens | Spherical Lens (Convex-Concave) | Thorlabs | CaF2 | Circular |
| LE1234 25.4 mm Dia. N-BK7 Positive Meniscus Lens; EFL=100mm Uncoated | Optics | Lens | Spherical Lens (Convex-Concave) | Thorlabs | N-BK7 | Circular |