| 800DIR25 25 mm Dia. Broadband Interference Bandpass Filter 800nm | Optics | Filter | Bandpass Filter | Knight Optical | UVFS | Circular | 820 nm | 780 nm |
| 800DIR12 12.5 mm Dia. Broadband Interference Bandpass Filter 800nm | Optics | Filter | Bandpass Filter | Knight Optical | UVFS | Circular | 820 nm | 780 nm |
| 780FIR50 50 mm Dia. Broadband Interference Bandpass Filter 780nm | Optics | Filter | Bandpass Filter | Knight Optical | UVFS | Circular | 795 nm | 765 nm |
| 780DIR12 12.5 mm Dia. Broadband Interference Bandpass Filter 780nm | Optics | Filter | Bandpass Filter | Knight Optical | UVFS | Circular | 795 nm | 765 nm |
| 750DIR12 12.5 mm Dia. Broadband Interference Bandpass Filter 750nm | Optics | Filter | Bandpass Filter | Knight Optical | UVFS | Circular | 770 nm | 730 nm |
| 700FIR12 12.5 mm Dia. Broadband Interference Bandpass Filter 700nm | Optics | Filter | Bandpass Filter | Knight Optical | UVFS | Circular | 720 nm | 680 nm |
| 670DIR25 25 mm Dia. Broadband Interference Bandpass Filter 670nm | Optics | Filter | Bandpass Filter | Knight Optical | UVFS | Circular | 690 nm | 650 nm |
| 670DIR12 12.5 mm Dia. Broadband Interference Bandpass Filter 670nm | Optics | Filter | Bandpass Filter | Knight Optical | UVFS | Circular | 690 nm | 650 nm |
| 650DIR25 25 mm Dia. Broadband Interference Bandpass Filter 650nm | Optics | Filter | Bandpass Filter | Knight Optical | UVFS | Circular | 670 nm | 630 nm |
| 633DIR25 25 mm Dia. Broadband Interference Bandpass Filter 633nm | Optics | Filter | Bandpass Filter | Knight Optical | UVFS | Circular | 653 nm | 613 nm |
| 600FIR25 25 mm Dia. Broadband Interference Bandpass Filter 600nm | Optics | Filter | Bandpass Filter | Knight Optical | UVFS | Circular | 620 nm | 580 nm |
| 600FIR12 12.5 mm Dia. Broadband Interference Bandpass Filter 600nm | Optics | Filter | Bandpass Filter | Knight Optical | UVFS | Circular | 620 nm | 580 nm |
| 600DIR12 12.5 mm Dia. Broadband Interference Bandpass Filter 600nm | Optics | Filter | Bandpass Filter | Knight Optical | UVFS | Circular | 620 nm | 580 nm |
| 570FIR12 12.5 mm Dia. Broadband Interference Bandpass Filter 570nm | Optics | Filter | Bandpass Filter | Knight Optical | UVFS | Circular | 590 nm | 550 nm |
| 550FIR50 50 mm Dia. Broadband Interference Bandpass Filter 550nm | Optics | Filter | Bandpass Filter | Knight Optical | UVFS | Circular | 570 nm | 530 nm |
| 550DIR25 25 mm Dia. Broadband Interference Bandpass Filter 550nm | Optics | Filter | Bandpass Filter | Knight Optical | UVFS | Circular | 570 nm | 530 nm |
| 550DIR12 12.5 mm Dia. Broadband Interference Bandpass Filter 550nm | Optics | Filter | Bandpass Filter | Knight Optical | UVFS | Circular | 570 nm | 530 nm |
| 521FCS2500 25 mm Dia. Colour Glass Bandpass Filter 520nm | Optics | Filter | Color Glass | Knight Optical | UVFS | Circular | 565 nm | 465 nm |
| 476FCS2500 25 mm Dia. Colour Glass Bandpass Filter 475nm | Optics | Filter | Color Glass | Knight Optical | UVFS | Circular | 525 nm | 415 nm |
| 466FCS2500 25 mm Dia. Colour Glass Bandpass Filter 465nm | Optics | Filter | Color Glass | Knight Optical | UVFS | Circular | 540 nm | 365 nm |
| 390FCS2500 25 mm Dia. Colour Glass Bandpass Filter 390nm | Optics | Filter | Color Glass | Knight Optical | UVFS | Circular | 445 nm | 335 nm |
| 360FCS2500 25 mm Dia. Colour Glass Bandpass Filter 360nm | Optics | Filter | Color Glass | Knight Optical | UVFS | Circular | 380 nm | 330 nm |
| 100FNIR-50 50mm Dia. OD=1.0, Germanium Standard IR Neutral Density Filter, 2000-14000nm | Optics | Filter | Neutral Density Filter | Andover Corporation | Germanium | Circular | | |
| 130FNIR-25 25mm Dia. OD=1.3, Germanium Standard IR Neutral Density Filter, 2000-14000nm | Optics | Filter | Neutral Density Filter | Andover Corporation | Germanium | Circular | | |
| 200FNIR-12.5 12.5mm Dia. OD=2.0, Germanium Standard IR Neutral Density Filter, 2000-14000nm | Optics | Filter | Neutral Density Filter | Andover Corporation | Germanium | Circular | | |
| 250FNIR-12.5 12.5mm Dia. OD=2.5, Germanium Standard IR Neutral Density Filter, 2000-14000nm | Optics | Filter | Neutral Density Filter | Andover Corporation | Germanium | Circular | | |
| 250FNIR-25 25mm Dia. OD=2.5, Germanium Standard IR Neutral Density Filter, 2000-14000nm | Optics | Filter | Neutral Density Filter | Andover Corporation | Germanium | Circular | | |
| 250FNIR-50 50mm Dia. OD=2.5, Germanium Standard IR Neutral Density Filter, 2000-14000nm | Optics | Filter | Neutral Density Filter | Andover Corporation | Germanium | Circular | | |
| 300FNIR-12.5 12.5mm Dia. OD=3.0, Germanium Standard IR Neutral Density Filter, 2000-14000nm | Optics | Filter | Neutral Density Filter | Andover Corporation | Germanium | Circular | | |
| 300FNIR-50 50mm Dia. OD=3.0, Germanium Standard IR Neutral Density Filter, 2000-14000nm | Optics | Filter | Neutral Density Filter | Andover Corporation | Germanium | Circular | | |
| 010FN46-25 25mm Dia. Fused Silica Standard UV Neutral Density Filter, OD=0.1 | Optics | Filter | Neutral Density Filter | Andover Corporation | Fused Silica | Circular | | |
| 010FN46-50S 50x50 mm Fused Silica Standard UV Neutral Density Filter, OD=0.1 | Optics | Filter | Neutral Density Filter | Andover Corporation | Fused Silica | Rectangular | | |
| 015FN46-12.5 12.5mm Dia. Fused Silica Standard UV Neutral Density Filter, OD=0.15 | Optics | Filter | Neutral Density Filter | Andover Corporation | Fused Silica | Circular | | |
| 015FN46-25 25mm Dia. Fused Silica Standard UV Neutral Density Filter, OD=0.15 | Optics | Filter | Neutral Density Filter | Andover Corporation | Fused Silica | Circular | | |
| 015FN46-50S 50x50 mm Fused Silica Standard UV Neutral Density Filter, OD=0.15 | Optics | Filter | Neutral Density Filter | Andover Corporation | Fused Silica | Rectangular | | |
| 020FN46-25 25mm Dia. Fused Silica Standard UV Neutral Density Filter, OD=0.2 | Optics | Filter | Neutral Density Filter | Andover Corporation | Fused Silica | Circular | | |
| 020FN46-50S 50x50 mm Fused Silica Standard UV Neutral Density Filter, OD=0.2 | Optics | Filter | Neutral Density Filter | Andover Corporation | Fused Silica | Rectangular | | |
| 030FN46-12.5 12.5mm Dia. Fused Silica Standard UV Neutral Density Filter, OD=0.3 | Optics | Filter | Neutral Density Filter | Andover Corporation | Fused Silica | Circular | | |
| 030FN46-25 25mm Dia. Fused Silica Standard UV Neutral Density Filter, OD=0.3 | Optics | Filter | Neutral Density Filter | Andover Corporation | Fused Silica | Circular | | |
| 030FN46-50 50mm Dia. Fused Silica Standard UV Neutral Density Filter, OD=0.3 | Optics | Filter | Neutral Density Filter | Andover Corporation | Fused Silica | Circular | | |
| 040FN46-12.5 12.5mm Dia. Fused Silica Standard UV Neutral Density Filter, OD=0.4 | Optics | Filter | Neutral Density Filter | Andover Corporation | Fused Silica | Circular | | |
| 040FN46-50S 50x50 mm Fused Silica Standard UV Neutral Density Filter, OD=0.4 | Optics | Filter | Neutral Density Filter | Andover Corporation | Fused Silica | Rectangular | | |
| 050FN46-12.5 12.5mm Dia. Fused Silica Standard UV Neutral Density Filter, OD=0.5 | Optics | Filter | Neutral Density Filter | Andover Corporation | Fused Silica | Circular | | |
| 050FN46-25 25mm Dia. Fused Silica Standard UV Neutral Density Filter, OD=0.5 | Optics | Filter | Neutral Density Filter | Andover Corporation | Fused Silica | Circular | | |
| 050FN46-50S 50x50 mm Fused Silica Standard UV Neutral Density Filter, OD=0.5 | Optics | Filter | Neutral Density Filter | Andover Corporation | Fused Silica | Rectangular | | |
| 060FN46-12.5 12.5mm Dia. Fused Silica Standard UV Neutral Density Filter, OD=0.6 | Optics | Filter | Neutral Density Filter | Andover Corporation | Fused Silica | Circular | | |
| 060FN46-50 50mm Dia. Fused Silica Standard UV Neutral Density Filter, OD=0.6 | Optics | Filter | Neutral Density Filter | Andover Corporation | Fused Silica | Circular | | |
| 070FN46-25 25mm Dia. Fused Silica Standard UV Neutral Density Filter, OD=0.7 | Optics | Filter | Neutral Density Filter | Andover Corporation | Fused Silica | Circular | | |
| 070FN46-50 50mm Dia. Fused Silica Standard UV Neutral Density Filter, OD=0.7 | Optics | Filter | Neutral Density Filter | Andover Corporation | Fused Silica | Circular | | |
| 070FN46-50S 50x50 mm Fused Silica Standard UV Neutral Density Filter, OD=0.7 | Optics | Filter | Neutral Density Filter | Andover Corporation | Fused Silica | Rectangular | | |
| 080FN46-12.5 12.5mm Dia. Fused Silica Standard UV Neutral Density Filter, OD=0.8 | Optics | Filter | Neutral Density Filter | Andover Corporation | Fused Silica | Circular | | |
| 080FN46-50 50mm Dia. Fused Silica Standard UV Neutral Density Filter, OD=0.8 | Optics | Filter | Neutral Density Filter | Andover Corporation | Fused Silica | Circular | | |
| 080FN46-50S 50x50 mm Fused Silica Standard UV Neutral Density Filter, OD=0.8 | Optics | Filter | Neutral Density Filter | Andover Corporation | Fused Silica | Rectangular | | |
| 090FN46-12.5 12.5mm Dia. Fused Silica Standard UV Neutral Density Filter, OD=0.9 | Optics | Filter | Neutral Density Filter | Andover Corporation | Fused Silica | Circular | | |
| 090FN46-50S 50x50 mm Fused Silica Standard UV Neutral Density Filter, OD=0.9 | Optics | Filter | Neutral Density Filter | Andover Corporation | Fused Silica | Rectangular | | |
| 100FN46-50 50mm Dia. Fused Silica Standard UV Neutral Density Filter, OD=1.0 | Optics | Filter | Neutral Density Filter | Andover Corporation | Fused Silica | Circular | | |
| 130FN46-25 25mm Dia. Fused Silica Standard UV Neutral Density Filter, OD=1.3 | Optics | Filter | Neutral Density Filter | Andover Corporation | Fused Silica | Circular | | |
| 130FN46-50S 50x50 mm Fused Silica Standard UV Neutral Density Filter, OD=1.3 | Optics | Filter | Neutral Density Filter | Andover Corporation | Fused Silica | Rectangular | | |
| 200FN46-25 25mm Dia. Fused Silica Standard UV Neutral Density Filter, OD=2.0 | Optics | Filter | Neutral Density Filter | Andover Corporation | Fused Silica | Circular | | |
| 200FN46-50 50mm Dia. Fused Silica Standard UV Neutral Density Filter, OD=2.0 | Optics | Filter | Neutral Density Filter | Andover Corporation | Fused Silica | Circular | | |
| 250FN46-12.5 12.5mm Dia. Fused Silica Standard UV Neutral Density Filter, OD=2.5 | Optics | Filter | Neutral Density Filter | Andover Corporation | Fused Silica | Circular | | |
| 250FN46-25 25mm Dia. Fused Silica Standard UV Neutral Density Filter, OD=2.5 | Optics | Filter | Neutral Density Filter | Andover Corporation | Fused Silica | Circular | | |
| 250FN46-50 50mm Dia. Fused Silica Standard UV Neutral Density Filter, OD=2.5 | Optics | Filter | Neutral Density Filter | Andover Corporation | Fused Silica | Circular | | |
| 300FN46-50 50mm Dia. Fused Silica Standard UV Neutral Density Filter, OD=3.0 | Optics | Filter | Neutral Density Filter | Andover Corporation | Fused Silica | Circular | | |
| 300FN46-50S 50x50 mm Fused Silica Standard UV Neutral Density Filter, OD=3.0 | Optics | Filter | Neutral Density Filter | Andover Corporation | Fused Silica | Rectangular | | |
| 400FN46-25 25mm Dia. Fused Silica Standard UV Neutral Density Filter, OD=4.0 | Optics | Filter | Neutral Density Filter | Andover Corporation | Fused Silica | Circular | | |
| 400FN46-50S 50x50 mm Fused Silica Standard UV Neutral Density Filter, OD=4.0 | Optics | Filter | Neutral Density Filter | Andover Corporation | Fused Silica | Rectangular | | |
| 010FN52-12.5 12.5mm Dia. Green Glass Standard VIS-NIR Neutral Density Filter, OD=0.1 | Optics | Filter | Neutral Density Filter | Andover Corporation | Soda Lime Green | Circular | | |
| 010FN52-50 50mm Dia. Green Glass Standard VIS-NIR Neutral Density Filter, OD=0.1 | Optics | Filter | Neutral Density Filter | Andover Corporation | Soda Lime Green | Circular | | |
| 015FN52-12.5 12.5mm Dia. Green Glass Standard VIS-NIR Neutral Density Filter, OD=0.15 | Optics | Filter | Neutral Density Filter | Andover Corporation | Soda Lime Green | Circular | | |
| 015FN52-25 25mm Dia. Green Glass Standard VIS-NIR Neutral Density Filter, OD=0.15 | Optics | Filter | Neutral Density Filter | Andover Corporation | Soda Lime Green | Circular | | |
| 015FN52-50 50mm Dia. Green Glass Standard VIS-NIR Neutral Density Filter, OD=0.15 | Optics | Filter | Neutral Density Filter | Andover Corporation | Soda Lime Green | Circular | | |
| 020FN52-12.5 12.5mm Dia. Green Glass Standard VIS-NIR Neutral Density Filter, OD=0.2 | Optics | Filter | Neutral Density Filter | Andover Corporation | Soda Lime Green | Circular | | |
| 020FN52-50S 50x50mm Green Glass Standard VIS-NIR Neutral Density Filter, OD=0.2 | Optics | Filter | Neutral Density Filter | Andover Corporation | Soda Lime Green | Rectangular | | |
| 030FN52-25 25mm Dia. Green Glass Standard VIS-NIR Neutral Density Filter, OD=0.3 | Optics | Filter | Neutral Density Filter | Andover Corporation | Soda Lime Green | Circular | | |
| 030FN52-50 50mm Dia. Green Glass Standard VIS-NIR Neutral Density Filter, OD=0.3 | Optics | Filter | Neutral Density Filter | Andover Corporation | Soda Lime Green | Circular | | |
| 030FN52-50S 50x50mm Green Glass Standard VIS-NIR Neutral Density Filter, OD=0.3 | Optics | Filter | Neutral Density Filter | Andover Corporation | Soda Lime Green | Rectangular | | |
| 040FN52-12.5 12.5mm Dia. Green Glass Standard VIS-NIR Neutral Density Filter, OD=0.4 | Optics | Filter | Neutral Density Filter | Andover Corporation | Soda Lime Green | Circular | | |
| 040FN52-25 25mm Dia. Green Glass Standard VIS-NIR Neutral Density Filter, OD=0.4 | Optics | Filter | Neutral Density Filter | Andover Corporation | Soda Lime Green | Circular | | |
| 050FN52-12.5 12.5mm Dia. Green Glass Standard VIS-NIR Neutral Density Filter, OD=0.5 | Optics | Filter | Neutral Density Filter | Andover Corporation | Soda Lime Green | Circular | | |
| 050FN52-25 25mm Dia. Green Glass Standard VIS-NIR Neutral Density Filter, OD=0.5 | Optics | Filter | Neutral Density Filter | Andover Corporation | Soda Lime Green | Circular | | |
| 050FN52-50 50mm Dia. Green Glass Standard VIS-NIR Neutral Density Filter, OD=0.5 | Optics | Filter | Neutral Density Filter | Andover Corporation | Soda Lime Green | Circular | | |
| 060FN52-25 25mm Dia. Green Glass Standard VIS-NIR Neutral Density Filter, OD=0.6 | Optics | Filter | Neutral Density Filter | Andover Corporation | Soda Lime Green | Circular | | |
| 060FN52-50 50mm Dia. Green Glass Standard VIS-NIR Neutral Density Filter, OD=0.6 | Optics | Filter | Neutral Density Filter | Andover Corporation | Soda Lime Green | Circular | | |
| 060FN52-50S 50x50mm Green Glass Standard VIS-NIR Neutral Density Filter, OD=0.6 | Optics | Filter | Neutral Density Filter | Andover Corporation | Soda Lime Green | Rectangular | | |
| 070FN52-12.5 12.5mm Dia. Green Glass Standard VIS-NIR Neutral Density Filter, OD=0.7 | Optics | Filter | Neutral Density Filter | Andover Corporation | Soda Lime Green | Circular | | |
| 070FN52-25 25mm Dia. Green Glass Standard VIS-NIR Neutral Density Filter, OD=0.7 | Optics | Filter | Neutral Density Filter | Andover Corporation | Soda Lime Green | Circular | | |
| 070FN52-50 50mm Dia. Green Glass Standard VIS-NIR Neutral Density Filter, OD=0.7 | Optics | Filter | Neutral Density Filter | Andover Corporation | Soda Lime Green | Circular | | |
| 080FN52-50 50mm Dia. Green Glass Standard VIS-NIR Neutral Density Filter, OD=0.8 | Optics | Filter | Neutral Density Filter | Andover Corporation | Soda Lime Green | Circular | | |
| 090FN52-12.5 12.5mm Dia. Green Glass Standard VIS-NIR Neutral Density Filter, OD=0.9 | Optics | Filter | Neutral Density Filter | Andover Corporation | Soda Lime Green | Circular | | |
| 090FN52-50S 50x50mm Green Glass Standard VIS-NIR Neutral Density Filter, OD=0.9 | Optics | Filter | Neutral Density Filter | Andover Corporation | Soda Lime Green | Rectangular | | |
| 100FN52-12.5 12.5mm Dia. Green Glass Standard VIS-NIR Neutral Density Filter, OD=1.0 | Optics | Filter | Neutral Density Filter | Andover Corporation | Soda Lime Green | Circular | | |
| 100FN52-25 25mm Dia. Green Glass Standard VIS-NIR Neutral Density Filter, OD=1.0 | Optics | Filter | Neutral Density Filter | Andover Corporation | Soda Lime Green | Circular | | |
| 100FN52-50 50mm Dia. Green Glass Standard VIS-NIR Neutral Density Filter, OD=1.0 | Optics | Filter | Neutral Density Filter | Andover Corporation | Soda Lime Green | Circular | | |
| 130FN52-12.5 12.5mm Dia. Green Glass Standard VIS-NIR Neutral Density Filter, OD=1.3 | Optics | Filter | Neutral Density Filter | Andover Corporation | Soda Lime Green | Circular | | |
| 130FN52-25 25mm Dia. Green Glass Standard VIS-NIR Neutral Density Filter, OD=1.3 | Optics | Filter | Neutral Density Filter | Andover Corporation | Soda Lime Green | Circular | | |
| 130FN52-50S 50x50mm Green Glass Standard VIS-NIR Neutral Density Filter, OD=1.3 | Optics | Filter | Neutral Density Filter | Andover Corporation | Soda Lime Green | Rectangular | | |
| 150FN52-12.5 12.5mm Dia. Green Glass Standard VIS-NIR Neutral Density Filter, OD=1.5 | Optics | Filter | Neutral Density Filter | Andover Corporation | Soda Lime Green | Circular | | |
| 150FN52-50 50mm Dia. Green Glass Standard VIS-NIR Neutral Density Filter, OD=1.5 | Optics | Filter | Neutral Density Filter | Andover Corporation | Soda Lime Green | Circular | | |
| 150FN52-50S 50x50mm Green Glass Standard VIS-NIR Neutral Density Filter, OD=1.5 | Optics | Filter | Neutral Density Filter | Andover Corporation | Soda Lime Green | Rectangular | | |