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Neutral Density Filter

Product advantages

Consultation
Product Introduction

Technical Parameter

MaterialAbsorptive Glass
Dimension Tolerance+0.0/-0.2mm
Surface Quality80/50 scratch and dig
Clear Aperture>90%
Flatness<2λ@632.8nm
Parallelism<5 arc minutes
ChamferProtective<0.5mmx45°
OD Tolerance

OD±10%@Design Wavelength

Specifications for Reflective Neutral Density Filter:

MaterialB270 Glass
Dimension Tolerance+0.0/-0.2mm
Thickness 2.0±0.2mm
Surface Quality80/50 scratch and dig
Clear Aperture>90%
Flatness<2λ@632.8nm
Parallelism<5 arc minutes
ChamferProtective<0.5mmx45°
Coating
Metallic reflective coating
OD ToleranceOD±10%@Design Wavelength

Standard Specification
Part NumberDimension (mm)
Optical Density Design Wavelength (nm)
NDFT25-0.125.40.1400-700
NDFT25-0.225.40.2400-700
NDFT25-0.325.40.3400-700
NDFT25-0.425.40.4400-700
NDFT25-0.525.40.5400-700
NDFT25-0.825.40.8400-700
NDFT25-125.41400-700
NDFT25-225.42400-700
NDFT25-325.43400-700
NDFT5050-0.150*500.1400-700
NDFT5050-0.250*500.2400-700
NDFT5050-0.350*500.3400-700
NDFT5050-0.450*500.4400-700
NDFT5050-0.550*500.5400-700
NDFT5050-0.850*500.8400-700
NDFT5050-150*501400-700
NDFT5050-250*502400-700
NDFT5050-350*503400-700

Standard Products: 

Part NumberDimension (mm)
Thickness (mm)Optical Density Design Wavelength (nm)
NDFR25-0.125.420.1400-700
NDFR25-0.225.420.2400-700
NDFR25-0.325.420.3400-700
NDFR25-0.425.420.4400-700
NDFR25-0.525.420.5400-700
NDFR25-0.825.420.8400-700
NDFR25-125.421400-700
NDFR25-225.422400-700
NDFR25-325.423400-700