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D80 F600 Astronomical Telescope Refractor Lens - 80mm Aperture 600mm Focal Length...

Neutral Density Optical Filter Sheet - 12.5mm/25mm/50x50mm, H-K9L Glass, 0.1-1.0(Square 50x50mmx0.3)

Barium Fluoride Optical Lenses - 1PCS Infrared BaF2 Window (Various : 10x1mm to 60x3mm)(25x1mm)

Neutral Density Optical Filter Sheet - 12.5mm/25mm/50x50mm, H-K9L Glass, 0.1-1.0(Square 50x50mmx0.1)

HD Astronomical Telescope Lens D154F750 - Diameter 154 mm, Focal Length 750...

20mm Neutral Density Filter with Mounting Bracket - C-Mount/SM1 Threads -1pcs(0.01% Transmittance C-Mount)

Light Filter for Black and White Cameras - Optical Glass Color Correcting...

High-Purity JGS1 Quartz Glass Flakes - U-V Optical Window for Fluorescence Detection...

Fluoride Optical Lenses - 1 BaF2 Infrared Window (Various: 10x1mm to 60x3mm) (13x1mm)

High-Precision Optical Window Piece - λ/4@633nm Glass Lens for Infrared Applications 1pcs(10...

20mm Neutral Density Filter with Mounting Bracket - C-Mount/SM1 Threads -1pcs(10% Transmittance SM1)

850 NM High Transmittance Optical Glass Filter Lens - Visible Light Cutout,...

Premium Infrared Germanium Lens Substrate Observation Window Sheet for Thermal Imager and Thermometer -1pcs(D60*2mm-AR+DLC)

Premium Infrared Germanium Lens Substrate Observation Window Sheet for Thermal Imager and Thermometer -1pcs(D50*2mm-AR+DLC)

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

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

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

Top Quality Infrared Germanium Lens Substrate Observation Window Sheet for Thermal Imaging...

Premium Infrared Germanium Lens Substrate Observation Window Sheet for Thermal Imager and Thermometer -1pcs(D20*2mm-AR+DLC)

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

Top Quality Infrared Germanium Lens Substrate Observation Window Sheet for Thermal Imaging...

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

Premium Infrared Germanium Lens Substrate Observation Window Sheet for Thermal Imager and...

Molybdenum Reflector Lens for CO2 machine Cutting Machines - 20mm, 25mm, 30mm,...

Circular Polarising Film 1 Round Sheet for Reflection Reduction (Left 60 x...

1pcs 50x50mm Absorption Type Neutral Density Optical Filter-sheet Attenuation 0.0001%-90% Transmittance (31% Transmittance)

1pcs 50x50mm Absorption Type Neutral Density Optical Filter-sheet Attenuation 0.0001%-90% Transmittance (40% Transmittance)