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Lens Set for Refractive Astronomical Telescope D70 mm DIY Projects Focal lengths...

Zinc Selenide machine Focusing Lens for Engraving and Cutting Machines - 10.6um Wavelength(D20/F101.6mm)

Gallium Arsenide Optical Lens Sheet: GaAs Focus Lenses for Intense Light Applications(20x63.5mm)

1pcs Infrared Germanium Lens - Double Sided Coating Window Sheet for Thermometers...

D154 F1200 HD Astronomical Telescope - High-Resolution, Multi-Coated Lens for Star Gazing (D154mmF1200mm/Multifilm)

Germanium Lens with AR+DLC Coating Window Plate for Imager Thermometer Optical/Thermal (1...

Neutral Density Optical Filter Sheet - 12.5mm/25mm/50x50mm, H-K9L Glass, 0.1-1.0(Round 12.5mmx0.7)

Neutral Density Optical Filter Sheet -12.5mm/25mm Diameter,50x50mm Size,Optical 0.1-1.0, H-K9L Float Glass,1...

20mm Neutral Density Filter with Mounting Bracket - C-Mount/SM1 Threads 1 Piece...

Molybdenum Reflective Lens for CO2 machine Engraving Machines, 20-38.1mm Diameter, 1PCS, >94% Reflectivity(38.1mmx3mm)

20mm Neutral Density Filter with Mounting Bracket - C-Mount/SM1 Threads 1 Piece...

Neutral Density Optical Filter Sheet - 12.5mm/25mm/50x50mm, H-K9L Glass, 0.1-1.0(Round 12.5mmx1)

Circular Polarising Film - 1 Piece Round for Reflection Reduction (150 x...

Magnesium Fluoride (MgF2) Ultra Thin Crystal Substrate - High Purity Optical Window...

Calcium Fluoride (CaF2) Lens - Infrared Optical Window for High-Energy machine Applications-1pc(D20 x 2mm)

Calcium Fluoride (CaF2) Lens - Infrared Optical Window for High-Energy machine Applications-1pc(D25 x 2mm)

Circular Polarizing Film - 1PCS Round Sheet for Reflection Reduction(Right 150x0.26mm No-sticky)

1PCS Circular Linear Polarizer -2.5mm Thickness,12.7-50.8mm Diameter,400nm-700nm Wavelength,1000:1 Extinction Ratio 1pcs(50.8mm EXT 100:1)

Refractor Lens for Astronomical Telescope D80 F600 - Aperture 80 mm, Focal...

High-Precision Coated Silicon Substrate Window Wafer- Monocrystalline Lens, 25-105mm Diameter, 0.5mm Thickness(105mm)

Silicon Infrared Lenses with Anti-Reflective Coating for Electronic Sensors and Detectors, 3-5...

Magnesium Fluoride Glass Substrate (MgF2) Ultrafine - High Purity Optical Window Blade...

Germanium Lens with AR+DLC Coating Window Plate for Imager Thermometer Optical/Thermal (1...

D80 F900 Astronomical Refractor Telescope 80mm Aperture 900mm Focal Length Double Separation...