| SLSQ-50.8B-60N 50.8 mm Dia. x -59.5 mm FL; Double-Concave Lens Uncoated | Optics | Lens | Spherical Lens (Concave-Concave) | OptoSigma | Fused Silica | Circular |
| SLSQ-30B-90N 30.0 mm Dia. x -89.7 mm FL; Double-Concave Lens Uncoated | Optics | Lens | Spherical Lens (Concave-Concave) | OptoSigma | Fused Silica | Circular |
| SLSQ-50.8B-70N 50.8 mm Dia. x -69.5 mm FL; Double-Concave Lens Uncoated | Optics | Lens | Spherical Lens (Concave-Concave) | OptoSigma | Fused Silica | Circular |
| SLSQ-50.8B-100N 50.8 mm Dia. x -99.5 mm FL; Double-Concave Lens Uncoated | Optics | Lens | Spherical Lens (Concave-Concave) | OptoSigma | Fused Silica | Circular |
| SLSQ-50.8B-200N 50.8 mm Dia. x -199.5 mm FL; Double-Concave Lens Uncoated | Optics | Lens | Spherical Lens (Concave-Concave) | OptoSigma | Fused Silica | Circular |
| SLSQ-40B-90N 40.0 mm Dia. x -89.7 mm FL; Double-Concave Lens Uncoated | Optics | Lens | Spherical Lens (Concave-Concave) | OptoSigma | Fused Silica | Circular |
| SLB-15B-15NM 15.0 mm Dia. x -14.7 mm FL; Coated; Double-Concave Lens 400-700nm | Optics | Lens | Spherical Lens (Concave-Concave) | OptoSigma | N-BK7 | Circular |
| SLB-25.4B-50NM 25.4 mm Dia. x -49.7 mm FL; Coated; Double-Concave Lens 400-700nm | Optics | Lens | Spherical Lens (Concave-Concave) | OptoSigma | N-BK7 | Circular |
| SLB-40B-50NM 40.0 mm Dia. x -49.7 mm FL; Coated; Double-Concave Lens 400-700nm | Optics | Lens | Spherical Lens (Concave-Concave) | OptoSigma | N-BK7 | Circular |
| SLB-20B-25NM 20.0 mm Dia. x -24.7 mm FL; Coated; Double-Concave Lens 400-700nm | Optics | Lens | Spherical Lens (Concave-Concave) | OptoSigma | N-BK7 | Circular |
| SLB-20B-30NM 20.0 mm Dia. x -29.7 mm FL; Coated; Double-Concave Lens 400-700nm | Optics | Lens | Spherical Lens (Concave-Concave) | OptoSigma | N-BK7 | Circular |
| SLB-25B-35NM 25.0 mm Dia. x -34.7 mm FL; Coated; Double-Concave Lens 400-700nm | Optics | Lens | Spherical Lens (Concave-Concave) | OptoSigma | N-BK7 | Circular |
| SLB-50B-70NM 50.0 mm Dia. x -69.5 mm FL; Coated; Double-Concave Lens 400-700nm | Optics | Lens | Spherical Lens (Concave-Concave) | OptoSigma | N-BK7 | Circular |
| SLB-50.8B-60NM 50.8 mm Dia. x -59.5 mm FL; Coated; Double-Concave Lens 400-700nm | Optics | Lens | Spherical Lens (Concave-Concave) | OptoSigma | N-BK7 | Circular |
| SLB-25B-100NM 25.0 mm Dia. x -99.7 mm FL; Coated; Double-Concave Lens 400-700nm | Optics | Lens | Spherical Lens (Concave-Concave) | OptoSigma | N-BK7 | Circular |
| SLB-25.4B-25NM 25.4 mm Dia. x -24.7 mm FL; Coated; Double-Concave Lens 400-700nm | Optics | Lens | Spherical Lens (Concave-Concave) | OptoSigma | N-BK7 | Circular |
| SLB-15B-40NIR1 15.0 mm Dia. x -39.7 mm FL; Coated; Double-Concave Lens 633-1064nm | Optics | Lens | Spherical Lens (Concave-Concave) | OptoSigma | N-BK7 | Circular |
| SLB-15B-50NIR1 15.0 mm Dia. x -49.7 mm FL; Coated; Double-Concave Lens 633-1064nm | Optics | Lens | Spherical Lens (Concave-Concave) | OptoSigma | N-BK7 | Circular |
| SLB-30B-50NM 30.0 mm Dia. x -49.7 mm FL; Coated; Double-Concave Lens 400-700nm | Optics | Lens | Spherical Lens (Concave-Concave) | OptoSigma | N-BK7 | Circular |
| SLB-50B-60NM 50.0 mm Dia. x -59.5 mm FL; Coated; Double-Concave Lens 400-700nm | Optics | Lens | Spherical Lens (Concave-Concave) | OptoSigma | N-BK7 | Circular |
| L-BCC057 25 mm Dia. Double-Concave Lens; EFL=-150mm Uncoated | Optics | Lens | Spherical Lens (Concave-Concave) | Ross Optical | N-BK7 | Circular |
| L-BCC062 25 mm Dia. Double-Concave Lens; EFL=-500mm Uncoated | Optics | Lens | Spherical Lens (Concave-Concave) | Ross Optical | N-BK7 | Circular |
| L-BCC066 25.4 mm Dia. Double-Concave Lens; EFL=-100mm Uncoated | Optics | Lens | Spherical Lens (Concave-Concave) | Ross Optical | N-BK7 | Circular |
| L-BCC069 30 mm Dia. Double-Concave Lens; EFL=-150mm Uncoated | Optics | Lens | Spherical Lens (Concave-Concave) | Ross Optical | N-BK7 | Circular |
| L-BCC085 38.1 mm Dia. Double-Concave Lens; EFL=-50mm Uncoated | Optics | Lens | Spherical Lens (Concave-Concave) | Ross Optical | N-BK7 | Circular |
| L-BCC096 40 mm Dia. Double-Concave Lens; EFL=-250mm Uncoated | Optics | Lens | Spherical Lens (Concave-Concave) | Ross Optical | N-BK7 | Circular |
| L-BCC105 50 mm Dia. Double-Concave Lens; EFL=-50mm Uncoated | Optics | Lens | Spherical Lens (Concave-Concave) | Ross Optical | N-BK7 | Circular |
| L-BCC108 50 mm Dia. Double-Concave Lens; EFL=-100mm Uncoated | Optics | Lens | Spherical Lens (Concave-Concave) | Ross Optical | N-BK7 | Circular |
| L-BCC113 50 mm Dia. Double-Concave Lens; EFL=-300mm Uncoated | Optics | Lens | Spherical Lens (Concave-Concave) | Ross Optical | N-BK7 | Circular |
| L-BCC118 50 mm Dia. Double-Concave Lens; EFL=-1000mm Uncoated | Optics | Lens | Spherical Lens (Concave-Concave) | Ross Optical | N-BK7 | Circular |
| LB11-25-100 25.4 mm Dia. N-BK7 Double-Concave Lens; EFL=-100mm Uncoated | Optics | Lens | Spherical Lens (Concave-Concave) | CeNing Optics | N-BK7 | Circular |
| SLB-25.4B-25N 25.4 mm Dia. x -24.7 mm FL; Double-Concave Lens Uncoated | Optics | Lens | Spherical Lens (Concave-Concave) | OptoSigma | N-BK7 | Circular |
| SLB-40B-100N 40.0 mm Dia. x -99.7 mm FL; Double-Concave Lens Uncoated | Optics | Lens | Spherical Lens (Concave-Concave) | OptoSigma | N-BK7 | Circular |
| SLSQ-15B-15N 15.0 mm Dia. x -14.7 mm FL; Double-Concave Lens Uncoated | Optics | Lens | Spherical Lens (Concave-Concave) | OptoSigma | Fused Silica | Circular |
| SLSQ-25B-25N 25.0 mm Dia. x -24.7 mm FL; Double-Concave Lens Uncoated | Optics | Lens | Spherical Lens (Concave-Concave) | OptoSigma | Fused Silica | Circular |
| SLSQ-25B-60N 25.0 mm Dia. x -59.7 mm FL; Double-Concave Lens Uncoated | Optics | Lens | Spherical Lens (Concave-Concave) | OptoSigma | Fused Silica | Circular |
| SLSQ-25B-100N 25.0 mm Dia. x -99.7 mm FL; Double-Concave Lens Uncoated | Optics | Lens | Spherical Lens (Concave-Concave) | OptoSigma | Fused Silica | Circular |
| SLSQ-25.4B-200N 25.4 mm Dia. x -199.7 mm FL; Double-Concave Lens Uncoated | Optics | Lens | Spherical Lens (Concave-Concave) | OptoSigma | Fused Silica | Circular |
| 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 |
| SLSQ-30B-35N 30.0 mm Dia. x -34.7 mm FL; Double-Concave Lens Uncoated | Optics | Lens | Spherical Lens (Concave-Concave) | OptoSigma | Fused Silica | Circular |
| SLSQ-40B-70N 40.0 mm Dia. x -69.7 mm FL; Double-Concave Lens Uncoated | Optics | Lens | Spherical Lens (Concave-Concave) | OptoSigma | Fused Silica | Circular |
| SLSQ-50B-100N 50.0 mm Dia. x -99.5 mm FL; Double-Concave Lens Uncoated | Optics | Lens | Spherical Lens (Concave-Concave) | OptoSigma | Fused Silica | Circular |
| SLB-10B-25NM 10.0 mm Dia. x -24.7 mm FL; Coated; Double-Concave Lens 400-700nm | Optics | Lens | Spherical Lens (Concave-Concave) | OptoSigma | N-BK7 | Circular |
| SLB-10B-40NM 10.0 mm Dia. x -39.7 mm FL; Coated; Double-Concave Lens 400-700nm | Optics | Lens | Spherical Lens (Concave-Concave) | OptoSigma | N-BK7 | Circular |
| SLB-20B-20NM 20.0 mm Dia. x -19.7 mm FL; Coated; Double-Concave Lens 400-700nm | Optics | Lens | Spherical Lens (Concave-Concave) | OptoSigma | N-BK7 | Circular |
| SLB-20B-40NM 20.0 mm Dia. x -39.7 mm FL; Coated; Double-Concave Lens 400-700nm | Optics | Lens | Spherical Lens (Concave-Concave) | OptoSigma | N-BK7 | Circular |
| SLB-25B-25NM 25.0 mm Dia. x -24.7 mm FL; Coated; Double-Concave Lens 400-700nm | Optics | Lens | Spherical Lens (Concave-Concave) | OptoSigma | N-BK7 | Circular |
| SLB-25.4B-40NM 25.4 mm Dia. x -39.7 mm FL; Coated; Double-Concave Lens 400-700nm | Optics | Lens | Spherical Lens (Concave-Concave) | OptoSigma | N-BK7 | Circular |
| SLB-25.4B-80NM 25.4 mm Dia. x -79.7 mm FL; Coated; Double-Concave Lens 400-700nm | Optics | Lens | Spherical Lens (Concave-Concave) | OptoSigma | N-BK7 | Circular |
| SLB-15B-20NIR1 15.0 mm Dia. x -19.7 mm FL; Coated; Double-Concave Lens 633-1064nm | Optics | Lens | Spherical Lens (Concave-Concave) | OptoSigma | N-BK7 | Circular |
| SLB-20B-40NIR1 20.0 mm Dia. x -39.7 mm FL; Coated; Double-Concave Lens 633-1064nm | Optics | Lens | Spherical Lens (Concave-Concave) | OptoSigma | N-BK7 | Circular |
| SLB-20B-50NIR1 20.0 mm Dia. x -49.7 mm FL; Coated; Double-Concave Lens 633-1064nm | Optics | Lens | Spherical Lens (Concave-Concave) | OptoSigma | N-BK7 | Circular |
| SLB-25B-35NIR1 25.0 mm Dia. x -34.7 mm FL; Coated; Double-Concave Lens 633-1064nm | Optics | Lens | Spherical Lens (Concave-Concave) | OptoSigma | N-BK7 | Circular |
| SLB-25B-40NIR1 25.0 mm Dia. x -39.7 mm FL; Coated; Double-Concave Lens 633-1064nm | Optics | Lens | Spherical Lens (Concave-Concave) | OptoSigma | N-BK7 | Circular |
| SLB-25.4B-150NIR1 25.4 mm Dia. x -149.7 mm FL; Coated; Double-Concave Lens 633-1064nm | Optics | Lens | Spherical Lens (Concave-Concave) | OptoSigma | N-BK7 | Circular |
| SLB-25.4B-200NIR1 25.4 mm Dia. x -199.7 mm FL; Coated; Double-Concave Lens 633-1064nm | Optics | Lens | Spherical Lens (Concave-Concave) | OptoSigma | N-BK7 | Circular |
| SLB-30B-30NM 30.0 mm Dia. x -29.7 mm FL; Coated; Double-Concave Lens 400-700nm | Optics | Lens | Spherical Lens (Concave-Concave) | OptoSigma | N-BK7 | Circular |
| SLB-30B-100NM 30.0 mm Dia. x -99.7 mm FL; Coated; Double-Concave Lens 400-700nm | Optics | Lens | Spherical Lens (Concave-Concave) | OptoSigma | N-BK7 | Circular |
| SLB-50.8B-100NM 50.8 mm Dia. x -99.5 mm FL; Coated; Double-Concave Lens 400-700nm | Optics | Lens | Spherical Lens (Concave-Concave) | OptoSigma | N-BK7 | Circular |
| SLB-10B-25NIR1 10.0 mm Dia. x -24.7 mm FL; Coated; Double-Concave Lens 633-1064nm | Optics | Lens | Spherical Lens (Concave-Concave) | OptoSigma | N-BK7 | Circular |
| SLB-10B-40NIR1 10.0 mm Dia. x -39.7 mm FL; Coated; Double-Concave Lens 633-1064nm | Optics | Lens | Spherical Lens (Concave-Concave) | OptoSigma | N-BK7 | Circular |
| SLB-15B-30NIR1 15.0 mm Dia. x -29.7 mm FL; Coated; Double-Concave Lens 633-1064nm | Optics | Lens | Spherical Lens (Concave-Concave) | OptoSigma | N-BK7 | Circular |
| SLB-20B-30NIR1 20.0 mm Dia. x -29.7 mm FL; Coated; Double-Concave Lens 633-1064nm | Optics | Lens | Spherical Lens (Concave-Concave) | OptoSigma | N-BK7 | Circular |
| SLB-25B-50NIR1 25.0 mm Dia. x -49.7 mm FL; Coated; Double-Concave Lens 633-1064nm | Optics | Lens | Spherical Lens (Concave-Concave) | OptoSigma | N-BK7 | Circular |
| SLB-25B-80NIR1 25.0 mm Dia. x -79.7 mm FL; Coated; Double-Concave Lens 633-1064nm | Optics | Lens | Spherical Lens (Concave-Concave) | OptoSigma | N-BK7 | Circular |
| SLB-25.4B-50NIR1 25.4 mm Dia. x -49.7 mm FL; Coated; Double-Concave Lens 633-1064nm | Optics | Lens | Spherical Lens (Concave-Concave) | OptoSigma | N-BK7 | Circular |
| SLB-30B-50NIR1 30.0 mm Dia. x -49.7 mm FL; Coated; Double-Concave Lens 633-1064nm | Optics | Lens | Spherical Lens (Concave-Concave) | OptoSigma | N-BK7 | Circular |
| SLB-50B-100NM 50.0 mm Dia. x -99.5 mm FL; Coated; Double-Concave Lens 400-700nm | Optics | Lens | Spherical Lens (Concave-Concave) | OptoSigma | N-BK7 | Circular |
| SLB-50.8B-150NM 50.8 mm Dia. x -149.5 mm FL; Coated; Double-Concave Lens 400-700nm | Optics | Lens | Spherical Lens (Concave-Concave) | OptoSigma | N-BK7 | Circular |
| SLB-10B-15NIR1 10.0 mm Dia. x -14.7 mm FL; Coated; Double-Concave Lens 633-1064nm | Optics | Lens | Spherical Lens (Concave-Concave) | OptoSigma | N-BK7 | Circular |
| SLB-25B-30NIR1 25.0 mm Dia. x -29.7 mm FL; Coated; Double-Concave Lens 633-1064nm | Optics | Lens | Spherical Lens (Concave-Concave) | OptoSigma | N-BK7 | Circular |
| SLB-30B-40NIR1 30.0 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-70NIR1 50.0 mm Dia. x -69.5 mm FL; Coated; Double-Concave Lens 633-1064nm | Optics | Lens | Spherical Lens (Concave-Concave) | OptoSigma | N-BK7 | Circular |