| WZN2522 25 mm Dia. Zinc Sulphide FLIR Round Window; t=2mm Uncoated | Optics | Window | Flat Window | Knight Optical | ZnS |
| WZN2503 25 mm Dia. Zinc Sulphide Multispectral (clear) Round Window; t=2mm Uncoated | Optics | Window | Flat Window | Knight Optical | ZnS |
| WZN2502 25 mm Dia. Zinc Sulphide Multispectral (clear) Round Window; t=1mm Uncoated | Optics | Window | Flat Window | Knight Optical | ZnS |
| WZN2201 22 mm Dia. Zinc Selenide Standard Round Window; t=1mm Uncoated | Optics | Window | Flat Window | Knight Optical | ZnSe |
| WZN1911 19 mm Dia. Zinc Sulphide Multispectral (clear) Round Window; t=1mm Uncoated | Optics | Window | Flat Window | Knight Optical | ZnS |
| WZN1503 15 mm Dia. Zinc Selenide Standard Round Window; t=3mm Uncoated | Optics | Window | Flat Window | Knight Optical | ZnSe |
| WZN1512 15 mm Dia. Zinc Sulphide Multispectral (clear) Round Window; t=2mm Uncoated | Optics | Window | Flat Window | Knight Optical | ZnS |
| WZN1004 10 mm Dia. Zinc Selenide Standard Round Window; t=4mm Uncoated | Optics | Window | Flat Window | Knight Optical | ZnSe |
| WZN1002 10 mm Dia. Zinc Selenide Standard Round Window; t=2mm Uncoated | Optics | Window | Flat Window | Knight Optical | ZnSe |
| WZN1001 10 mm Dia. Zinc Selenide Standard Round Window; t=1mm Uncoated | Optics | Window | Flat Window | Knight Optical | ZnSe |
| WZN1005 10 mm Dia. Zinc Selenide Standard Round Window; t=0.5mm Uncoated | Optics | Window | Flat Window | Knight Optical | ZnSe |
| WZN9502 9.5 mm Dia. Zinc Sulphide FLIR Round Window; t=2mm Uncoated | Optics | Window | Flat Window | Knight Optical | ZnS |
| AC050-010-A 5 mm Dia. N-BAK4/SF5 Unmounted Achromatic Doublet; EFL=10mm 400-700nm | Optics | Lens | Multiplets | Thorlabs | N-BAK4, SF5 |
| AC060-010-A 6 mm Dia. N-BAK4/SF5 Unmounted Achromatic Doublet; EFL=10mm 400-700nm | Optics | Lens | Multiplets | Thorlabs | N-BAK4, SF5 |
| AC064-015-A 6.35 mm Dia. N-BK7/SF2 Unmounted Achromatic Doublet; EFL=15mm 400-700nm | Optics | Lens | Multiplets | Thorlabs | N-BK7, SF2 |
| AC080-016-A 8 mm Dia. N-BAF10/N-SF6HT Unmounted Achromatic Doublet; EFL=16mm 400-700nm | Optics | Lens | Multiplets | Thorlabs | N-BAF10, N-SF6HT |
| AC080-020-A 8 mm Dia. N-BK7/SF2 Unmounted Achromatic Doublet; EFL=20mm 400-700nm | Optics | Lens | Multiplets | Thorlabs | N-BK7, SF2 |
| ACN127-050-A 12.7 mm Dia. N-BAK4/SF5 Unmounted Achromatic Doublet; EFL=-50mm 400-700nm | Optics | Lens | Multiplets | Thorlabs | N-BAK4, SF5 |
| ACN127-030-A 12.7 mm Dia. N-BAK4/SF5 Unmounted Achromatic Doublet; EFL=-30mm 400-700nm | Optics | Lens | Multiplets | Thorlabs | N-BAK4, SF5 |
| ACN127-025-A 12.7 mm Dia. N-BAF10/N-SF6HT Unmounted Achromatic Doublet; EFL=-25mm 400-700nm | Optics | Lens | Multiplets | Thorlabs | N-BAF10, N-SF6HT |
| AC127-019-A 12.7 mm Dia. N-BAF10/N-SF6HT Unmounted Achromatic Doublet; EFL=19mm 400-700nm | Optics | Lens | Multiplets | Thorlabs | N-BAF10, N-SF6HT |
| AC127-025-A 12.7 mm Dia. N-BAF10/N-SF10 Unmounted Achromatic Doublet; EFL=25mm 400-700nm | Optics | Lens | Multiplets | Thorlabs | N-BAF10, N-SF10 |
| ACN254-100-A 25.4 mm Dia. N-BAK4/SF5 Unmounted Achromatic Doublet; EFL=-100.1mm 400-700nm | Optics | Lens | Multiplets | Thorlabs | N-BAK4, SF5 |
| ACN254-075-A 25.4 mm Dia. N-BAK4/SF5 Unmounted Achromatic Doublet; EFL=-75.1mm 400-700nm | Optics | Lens | Multiplets | Thorlabs | N-BAK4, SF5 |
| AC254-035-A 25.4 mm Dia. N-BAF10/N-SF6HT Unmounted Achromatic Doublet; EFL=35.2mm 400-700nm | Optics | Lens | Multiplets | Thorlabs | N-BAF10, N-SF6HT |
| AC254-040-A 25.4 mm Dia. N-BK7/SF5 Unmounted Achromatic Doublet; EFL=40.1mm 400-700nm | Optics | Lens | Multiplets | Thorlabs | N-BK7, SF5 |
| AC254-045-A 25.4 mm Dia. N-BAF10/N-SF6HT Unmounted Achromatic Doublet; EFL=45mm 400-700nm | Optics | Lens | Multiplets | Thorlabs | N-BAF10, N-SF6HT |
| AC254-050-A 25.4 mm Dia. N-BAF10/N-SF10 Unmounted Achromatic Doublet; EFL=50.2mm 400-700nm | Optics | Lens | Multiplets | Thorlabs | N-BAF10, N-SF10 |
| AC254-080-A 25.4 mm Dia. N-BK7/N-SF5 Unmounted Achromatic Doublet; EFL=80mm 400-700nm | Optics | Lens | Multiplets | Thorlabs | N-BK7, N-SF5 |
| AC254-100-A 25.4 mm Dia. N-BK7/SF5 Unmounted Achromatic Doublet; EFL=100.1mm 400-700nm | Optics | Lens | Multiplets | Thorlabs | N-BK7, SF5 |
| AC254-125-A 25.4 mm Dia. N-BK7/N-SF5 Unmounted Achromatic Doublet; EFL=125mm 400-700nm | Optics | Lens | Multiplets | Thorlabs | N-BK7, N-SF5 |
| AC254-150-A 25.4 mm Dia. N-BK7/SF5 Unmounted Achromatic Doublet; EFL=150mm 400-700nm | Optics | Lens | Multiplets | Thorlabs | N-BK7, SF5 |
| AC254-250-A 25.4 mm Dia. N-BK7/SF2 Unmounted Achromatic Doublet; EFL=250mm 400-700nm | Optics | Lens | Multiplets | Thorlabs | N-BK7, SF2 |
| AC254-500-A 25.4 mm Dia. N-BK7/SF2 Unmounted Achromatic Doublet; EFL=502.5mm 400-700nm | Optics | Lens | Multiplets | Thorlabs | N-BK7, SF2 |
| AC300-050-A 30 mm Dia. N-BAF10/N-SF6HT Unmounted Achromatic Doublet; EFL=50mm 400-700nm | Optics | Lens | Multiplets | Thorlabs | N-BAF10, N-SF6HT |
| AC300-080-A 30 mm Dia. N-BAF10/N-SF6HT Unmounted Achromatic Doublet; EFL=80mm 400-700nm | Optics | Lens | Multiplets | Thorlabs | N-BAF10, N-SF6HT |
| AC300-100-A 30 mm Dia. N-BAF10/N-SF6HT Unmounted Achromatic Doublet; EFL=100mm 400-700nm | Optics | Lens | Multiplets | Thorlabs | N-BAF10, N-SF6HT |
| AC508-080-A 50.8 mm Dia. N-BAF10/N-SF6HT Unmounted Achromatic Doublet; EFL=80mm 400-700nm | Optics | Lens | Multiplets | Thorlabs | N-BAF10, N-SF6HT |
| AC508-180-A 50.8 mm Dia. N-BK7/N-SF5 Unmounted Achromatic Doublet; EFL=180mm 400-700nm | Optics | Lens | Multiplets | Thorlabs | N-BK7, N-SF5 |
| ACT508-400-A 50.8 mm Dia. N-BK7/N-SF2 Unmounted Achromatic Doublet; EFL=400mm 400-700nm | Optics | Lens | Multiplets | Thorlabs | N-BK7, N-SF2 |
| ACT508-500-A 50.8 mm Dia. N-BK7/N-SF2 Unmounted Achromatic Doublet; EFL=500mm 400-700nm | Optics | Lens | Multiplets | Thorlabs | N-BK7, N-SF2 |
| ACT508-750-A 50.8 mm Dia. N-BK7/N-SF2 Unmounted Achromatic Doublet; EFL=750mm 400-700nm | Optics | Lens | Multiplets | Thorlabs | N-BK7, N-SF2 |
| AC050-015-B 5 mm Dia. N-LAK22/N-SF6HT Unmounted Achromatic Doublet; EFL=15mm 650-1050nm | Optics | Lens | Multiplets | Thorlabs | N-LAK22, N-SF6HT |
| AC064-013-B 6.35 mm Dia. N-LAK22/N-SF6HT Unmounted Achromatic Doublet; EFL=12.7mm 650-1050nm | Optics | Lens | Multiplets | Thorlabs | N-LAK22, N-SF6HT |
| AC080-010-B 8 mm Dia. N-LAK10/N-SF6HT Unmounted Achromatic Doublet; EFL=10mm 650-1050nm | Optics | Lens | Multiplets | Thorlabs | N-LAK10, N-SF6HT |
| ACN127-025-B 12.7 mm Dia. N-BAF10/N-SF6HT Unmounted Achromatic Doublet; EFL=-25mm 650-1050nm | Optics | Lens | Multiplets | Thorlabs | N-BAF10, N-SF6HT |
| ACN127-030-B 12.7 mm Dia. N-LAK22/N-SF6HT Unmounted Achromatic Doublet; EFL=-30mm 650-1050nm | Optics | Lens | Multiplets | Thorlabs | N-LAK22, N-SF6HT |
| ACN127-050-B 12.7 mm Dia. N-BAF10/N-SF6HT Unmounted Achromatic Doublet; EFL=-50mm 650-1050nm | Optics | Lens | Multiplets | Thorlabs | N-BAF10, N-SF6HT |
| AC127-019-B 12.7 mm Dia. N-BAF10/N-SF6HT Unmounted Achromatic Doublet; EFL=19mm 650-1050nm | Optics | Lens | Multiplets | Thorlabs | N-BAF10, N-SF6HT |
| AC127-025-B 12.7 mm Dia. N-LAK22/N-SF6HT Unmounted Achromatic Doublet; EFL=25mm 650-1050nm | Optics | Lens | Multiplets | Thorlabs | N-LAK22, N-SF6HT |
| AC127-050-B 12.7 mm Dia. N-BAF10/N-SF6HT Unmounted Achromatic Doublet; EFL=50mm 650-1050nm | Optics | Lens | Multiplets | Thorlabs | N-BAF10, N-SF6HT |
| ACN254-040-B 25.4 mm Dia. N-BAF10/N-SF6HT Unmounted Achromatic Doublet; EFL=-40mm 650-1050nm | Optics | Lens | Multiplets | Thorlabs | N-BAF10, N-SF6HT |
| ACN254-050-B 25.4 mm Dia. N-BAF10/N-SF6HT Unmounted Achromatic Doublet; EFL=-50mm 650-1050nm | Optics | Lens | Multiplets | Thorlabs | N-BAF10, N-SF6HT |
| ACN254-075-B 25.4 mm Dia. N-BAF10/N-SF6HT Unmounted Achromatic Doublet; EFL=-75mm 650-1050nm | Optics | Lens | Multiplets | Thorlabs | N-BAF10, N-SF6HT |
| ACN254-100-B 25.4 mm Dia. N-BAF10/N-SF6HT Unmounted Achromatic Doublet; EFL=-100.1mm 650-1050nm | Optics | Lens | Multiplets | Thorlabs | N-BAF10, N-SF6HT |
| AC254-035-B 25.4 mm Dia. N-BAF10/N-SF6HT Unmounted Achromatic Doublet; EFL=35mm 650-1050nm | Optics | Lens | Multiplets | Thorlabs | N-BAF10, N-SF6HT |
| AC254-080-B 25.4 mm Dia. N-BAF10/N-SF6HT Unmounted Achromatic Doublet; EFL=80.3mm 650-1050nm | Optics | Lens | Multiplets | Thorlabs | N-BAF10, N-SF6HT |
| AC254-125-B 25.4 mm Dia. N-BK7/N-SF8 Unmounted Achromatic Doublet; EFL=125mm 650-1050nm | Optics | Lens | Multiplets | Thorlabs | N-BK7, N-SF8 |
| AC254-200-B 25.4 mm Dia. N-LAK22/N-SF10 Unmounted Achromatic Doublet; EFL=200mm 650-1050nm | Optics | Lens | Multiplets | Thorlabs | N-LAK22, N-SF10 |
| AC254-250-B 25.4 mm Dia. SF5/N-SF6HT Unmounted Achromatic Doublet; EFL=250mm 650-1050nm | Optics | Lens | Multiplets | Thorlabs | SF5, N-SF6HT |
| AC254-300-B 25.4 mm Dia. SF5/N-SF6HT Unmounted Achromatic Doublet; EFL=300mm 650-1050nm | Optics | Lens | Multiplets | Thorlabs | SF5, N-SF6HT |
| AC300-080-B 30 mm Dia. N-LAK22/N-SF6HT Unmounted Achromatic Doublet; EFL=80mm 650-1050nm | Optics | Lens | Multiplets | Thorlabs | N-LAK22, N-SF6HT |
| AC508-075-B 50.8 mm Dia. N-LAK22/N-SF6HT Unmounted Achromatic Doublet; EFL=75mm 650-1050nm | Optics | Lens | Multiplets | Thorlabs | N-LAK22, N-SF6HT |
| AC508-100-B 50.8 mm Dia. N-LAK22/N-SF6HT Unmounted Achromatic Doublet; EFL=100mm 650-1050nm | Optics | Lens | Multiplets | Thorlabs | N-LAK22, N-SF6HT |
| AC508-300-B 50.8 mm Dia. N-LAK22/N-SF6HT Unmounted Achromatic Doublet; EFL=300mm 650-1050nm | Optics | Lens | Multiplets | Thorlabs | N-LAK22, N-SF6HT |
| AC508-400-B 50.8 mm Dia. N-LAK22/N-SF6HT Unmounted Achromatic Doublet; EFL=400mm 650-1050nm | Optics | Lens | Multiplets | Thorlabs | N-LAK22, N-SF6HT |
| AC508-500-B 50.8 mm Dia. N-LAK22/N-SF6HT Unmounted Achromatic Doublet; EFL=500mm 650-1050nm | Optics | Lens | Multiplets | Thorlabs | N-LAK22, N-SF6HT |
| AC508-750-B 50.8 mm Dia. N-BAF10/N-SF10 Unmounted Achromatic Doublet; EFL=750mm 650-1050nm | Optics | Lens | Multiplets | Thorlabs | N-BAF10, N-SF10 |
| AC508-1000-B 50.8 mm Dia. N-BAF10/N-SF10 Unmounted Achromatic Doublet; EFL=1000mm 650-1050nm | Optics | Lens | Multiplets | Thorlabs | N-BAF10, N-SF10 |
| AC064-013-C 6.35 mm Dia. N-LAK22/N-SF6 Unmounted Achromatic Doublet; EFL=12.7mm 1050-1700nm | Optics | Lens | Multiplets | Thorlabs | N-LAK22, N-SF6 |
| AC064-015-C 6.35 mm Dia. N-LAK22/N-SF6 Unmounted Achromatic Doublet; EFL=15mm 1050-1700nm | Optics | Lens | Multiplets | Thorlabs | N-LAK22, N-SF6 |
| AC080-010-C 8 mm Dia. N-BAF10/N-SF6 Unmounted Achromatic Doublet; EFL=10mm 1050-1700nm | Optics | Lens | Multiplets | Thorlabs | N-BAF10, N-SF6 |
| AC080-016-C 8 mm Dia. N-LAK22/N-SF6 Unmounted Achromatic Doublet; EFL=16mm 1050-1700nm | Optics | Lens | Multiplets | Thorlabs | N-LAK22, N-SF6 |
| AC080-020-C 8 mm Dia. N-LAK22/N-SF6 Unmounted Achromatic Doublet; EFL=20mm 1050-1700nm | Optics | Lens | Multiplets | Thorlabs | N-LAK22, N-SF6 |
| AC127-050-C 12.7 mm Dia. N-BAF10/N-SF6 Unmounted Achromatic Doublet; EFL=49.9mm 1050-1700nm | Optics | Lens | Multiplets | Thorlabs | N-BAF10, N-SF6 |
| AC127-075-C 12.7 mm Dia. N-BAF10/N-SF6 Unmounted Achromatic Doublet; EFL=75.1mm 1050-1700nm | Optics | Lens | Multiplets | Thorlabs | N-BAF10, N-SF6 |
| AC254-040-C 25.4 mm Dia. N-LAK22/N-SF6 Unmounted Achromatic Doublet; EFL=40mm 1050-1700nm | Optics | Lens | Multiplets | Thorlabs | N-LAK22, N-SF6 |
| AC254-045-C 25.4 mm Dia. N-LAK22/N-SF6 Unmounted Achromatic Doublet; EFL=45mm 1050-1700nm | Optics | Lens | Multiplets | Thorlabs | N-LAK22, N-SF6 |
| AC254-060-C 25.4 mm Dia. N-LAK22/N-SF6 Unmounted Achromatic Doublet; EFL=60mm 1050-1700nm | Optics | Lens | Multiplets | Thorlabs | N-LAK22, N-SF6 |
| AC254-075-C 25.4 mm Dia. N-BAF10/N-SF6 Unmounted Achromatic Doublet; EFL=75.1mm 1050-1700nm | Optics | Lens | Multiplets | Thorlabs | N-BAF10, N-SF6 |
| AC254-100-C 25.4 mm Dia. N-BAF10/N-SF6 Unmounted Achromatic Doublet; EFL=100.1mm 1050-1700nm | Optics | Lens | Multiplets | Thorlabs | N-BAF10, N-SF6 |
| AC254-150-C 25.4 mm Dia. N-BAF10/N-SF6 Unmounted Achromatic Doublet; EFL=150.5mm 1050-1700nm | Optics | Lens | Multiplets | Thorlabs | N-BAF10, N-SF6 |
| AC254-250-C 25.4 mm Dia. N-SF2/N-SF6 Unmounted Achromatic Doublet; EFL=249.2mm 1050-1700nm | Optics | Lens | Multiplets | Thorlabs | N-SF2, N-SF6 |
| AC254-400-C 25.4 mm Dia. N-SF2/N-SF6 Unmounted Achromatic Doublet; EFL=400.1mm 1050-1700nm | Optics | Lens | Multiplets | Thorlabs | N-SF2, N-SF6 |
| AC254-500-C 25.4 mm Dia. N-SF2/N-SF6 Unmounted Achromatic Doublet; EFL=497.6mm 1050-1700nm | Optics | Lens | Multiplets | Thorlabs | N-SF2, N-SF6 |
| AC300-050-C 30 mm Dia. N-BAF10/N-SF6 Unmounted Achromatic Doublet; EFL=50.1mm 1050-1700nm | Optics | Lens | Multiplets | Thorlabs | N-BAF10, N-SF6 |
| AC300-100-C 30 mm Dia. N-BAF10/N-SF6 Unmounted Achromatic Doublet; EFL=99.9mm 1050-1700nm | Optics | Lens | Multiplets | Thorlabs | N-BAF10, N-SF6 |
| AC508-150-C 50.8 mm Dia. N-LAK22/N-SF6 Unmounted Achromatic Doublet; EFL=150.2mm 1050-1700nm | Optics | Lens | Multiplets | Thorlabs | N-LAK22, N-SF6 |
| AC508-200-C 50.8 mm Dia. N-LAK22/N-SF6 Unmounted Achromatic Doublet; EFL=199.2mm 1050-1700nm | Optics | Lens | Multiplets | Thorlabs | N-LAK22, N-SF6 |
| AC508-300-C 50.8 mm Dia. N-BAF10/N-SF6 Unmounted Achromatic Doublet; EFL=301.4mm 1050-1700nm | Optics | Lens | Multiplets | Thorlabs | N-BAF10, N-SF6 |
| AC508-1000-C 50.8 mm Dia. N-SF5/N-SF6 Unmounted Achromatic Doublet; EFL=1010mm 1050-1700nm | Optics | Lens | Multiplets | Thorlabs | N-SF5, N-SF6 |
| AC050-008-A-ML 5 mm Dia. N-BAF10/N-SF6HT Mounted Achromatic Doublet; EFL=7.5mm 400-700nm | Optics | Lens | Multiplets | Thorlabs | N-BAF10, N-SF6HT |
| AC050-010-A-ML 5 mm Dia. N-BAK4/SF5 Mounted Achromatic Doublet; EFL=10mm 400-700nm | Optics | Lens | Multiplets | Thorlabs | N-BAK4, SF5 |
| AC050-015-A-ML 5 mm Dia. N-BK7/SF2 Mounted Achromatic Doublet; EFL=15mm 400-700nm | Optics | Lens | Multiplets | Thorlabs | N-BK7, SF2 |
| AC060-010-A-ML 6 mm Dia. N-BAK4/SF5 Mounted Achromatic Doublet; EFL=10mm 400-700nm | Optics | Lens | Multiplets | Thorlabs | N-BAK4, SF5 |
| AC064-013-A-ML 6.35 mm Dia. N-BAK4/SF5 Mounted Achromatic Doublet; EFL=12.7mm 400-700nm | Optics | Lens | Multiplets | Thorlabs | N-BAK4, SF5 |
| AC064-015-A-ML 6.35 mm Dia. N-BK7/SF2 Mounted Achromatic Doublet; EFL=15mm 400-700nm | Optics | Lens | Multiplets | Thorlabs | N-BK7, SF2 |
| AC080-010-A-ML 8 mm Dia. N-BAF10/N-SF6HT Mounted Achromatic Doublet; EFL=10mm 400-700nm | Optics | Lens | Multiplets | Thorlabs | N-BAF10, N-SF6HT |
| AC080-016-A-ML 8 mm Dia. N-BAF10/N-SF6HT Mounted Achromatic Doublet; EFL=16mm 400-700nm | Optics | Lens | Multiplets | Thorlabs | N-BAF10, N-SF6HT |
| AC127-030-A-ML 12.7 mm Dia. N-BK7/SF2 Mounted Achromatic Doublet; EFL=30mm 400-700nm | Optics | Lens | Multiplets | Thorlabs | N-BK7, SF2 |