25 Mm Neutral Density Filter

Description: Metallic inconel coated neutral density filter, operates up to 250° C

• Neutral Density Filter Type: Reflective, Absorptive
• Filter Shape: Square
• Substrate Material: Fused Silica
• Filter Surface Quality: 80-50 Scratch / Dig

Description: Metallic coated filters with a neutral transmittance across the visible

• Neutral Density Filter Type: Reflective
• Filter Shape: Circular
• Substrate Material: BK7 Glass
• Filter Surface Quality: 60-40 Scratch / Dig

Description: set of 12 Metallic ND filters-UV grade-25mmdia These Metallic Neutral Density Filters attenuate light through reflection rather than absorption as in the glass type of neutral density filter. Metallic Neutral Density Filters consist of a thin layer of nickel-chromium alloy vacuum-deposited

• Substrate Material: UV grade Fused Silica
• Filter Type: Neutral Density Filters
• Application Specific: Ultra-Violet (UV)

Description: Metallic-coated neutral density (ND) filters obtain their optical density from a metal alloy coating on a substrate determined by the wavelength region of interest. Unlike the all-dielectric or absorption type, the metallic type ND filter employs a combination of absorption and reflection to reduce

• Neutral Density Filter Type: Reflective, Absorptive
• Filter Shape: Circular
• Substrate Material: Germanium
• Filter Surface Quality: 60-40 Scratch / Dig

Description: Neutral or spectrally selective, special thickness available

• Neutral Density Filter Type: Absorptive
• Filter Shape: Square
• Substrate Material: Other
• Filter Surface Quality: 80-50 Scratch / Dig

Description: Description / Specifications: Neutral density filters uniformly attenuate the intensity of light over a broad spectral range. ND 0.6 @ 25% transmittance.

• Filter Type: Neutral Density Filters

Description: Optical density at 250nm, thickness 1-3mm

• Neutral Density Filter Type: Reflective
• Filter Shape: Circular
• Substrate Material: UV grade Fused Silica
• Filter Surface Quality: 60-40 Scratch / Dig

Description: Thorlabs Mounted Absorptive Neutral Density (ND) Filters are available with diameters of 1/2" (12.7 mm), 25 mm (0.98"), and 2" (50.8 mm). The mounts are SM05 (0.535"-40), SM1(1.035"-40), or SM2 (2.035"-40) lens tubes, respectively, and are engraved with both the part

• Neutral Density Filter Type: Absorptive
• Filter Shape: Circular
• Substrate Material: Other
• Filter Surface Quality: 40-20 Scratch / Dig

Description: Thorlabs' Mounted N-BK7 Reflective (Metallic) 1/2" and 25 mm Neutral Density (ND) Filters provide uniform attenuation over the broad spectral range from 350 nm to 1100 nm. All 25 mm filters are mounted in an SM1-threaded (1.035"-40) cell, making them compatible with components such as 1

• Neutral Density Filter Type: Reflective
• Filter Shape: Circular
• Substrate Material: BK7 Glass
• Filter Surface Quality: 40-20 Scratch / Dig

Description: For lower power applications, precision polished

• Neutral Density Filter Type: Absorptive
• Filter Shape: Circular
• Filter Surface Quality: 60-40 Scratch / Dig
• Filter Type: Neutral Density Filters

Description: of these filters are offered in both the 10 mm and 25 mm size. In each size, there are five or ten step options with the optical density ranging from 0.3 to 2.0 and 0.1 to 4.0. The optical density, D, is defined by the following equation D = log10 (1/T), or T = 10-D A higher optical density, D, will translate

• Neutral Density Filter Type: Reflective, Variable
• Filter Shape: Rectangular
• Substrate Material: UV grade Fused Silica
• Filter Surface Quality: 60-40 Scratch / Dig

Description: Flat spectral response filters working down to 200nm

• Neutral Density Filter Type: Reflective
• Filter Shape: Circular
• Substrate Material: UV grade Fused Silica
• Filter Surface Quality: 60-40 Scratch / Dig

Description: Continuous OD filters light precisely, Designs for 0.04 to 2.0 & 0.04 to 4.0, Spectral Range: 400nm to 700nm

• Filter Type: Neutral Density Filters
• Application Specific: Visible (VIS)
• Filter Shape: Rectangular
• Filter Surface Quality: 60-40 Scratch / Dig

Description: Compact, securely holds 6 neutral density filters/optical components

• Mount Type: Filter Holder
• Adjustment Type: Fixed
• Mounted Object Shape: Circular

Description: Antireflection coating on second surface to reduce back reflection

• Filter Surface Quality: 60-40 Scratch / Dig
• Neutral Density Filter Type: Variable
• Filter Shape: Circular
• Substrate Material: UV grade Fused Silica

Description: to its flat spectral response. Our mounted filters are available in 1/2" or 25 mm versions. The 1/2" mounted filters come in SM05 lens tubes, while the 25 mm versions are housed in SM1 lens tubes. Both are engraved with the part number, filter type (i.e., reflective), and optical density

• Neutral Density Filter Type: Reflective
• Filter Shape: Circular
• Substrate Material: UV grade Fused Silica
• Filter Surface Quality: 40-20 Scratch / Dig

Description: Thorlabs' Round Continuously Variable, Reflective (Metallic) Neutral Density (ND) Filters provide linear, adjustable attenuation via rotation. These filters have a UV Fused Silica glass substrate and a metal (Inconel) coating. Themounted versions of our continuously variable neutral density filters

• Neutral Density Filter Type: Reflective, Variable
• Filter Shape: Circular
• Substrate Material: UV grade Fused Silica
• Filter Surface Quality: 60-40 Scratch / Dig

Description: Absorption filters may be neutral or spectrally selective. While spectral characteristics are customarily shown for a 1 mm thickness, the filters themselves are usually made thicker to minimize transmission differences caused by small variations in thickness occurring in manufacture. Because

• Neutral Density Filter Type: Absorptive
• Filter Shape: Square
• Substrate Material: Other
• Filter Surface Quality: 80-50 Scratch / Dig