We provide customers with neutral density filters designed for flat transmission over a specific wavelength range and defined by optical density (OD). Total light attenuation is the sum of light absorption and Fresnel reflection losses in neutral density optical glasses. When used in series, the densities of the neutral density filters add up.
Request bulk or custom formats
Catalog Number
ACMA00028478
Product Name
Neutral Density Filter, Optical Density 0.5
Dimension
(face size) ⌀25.4 mm
DimensionTolerance
dimension±0.2 mm
Coating
Uncoated, available upon request
Flatness
<1λ@632.8 nm
Parallelism
<3 arcmin
Surface Quality
60-40 S-D
ClearAperture
>85%
Density
optical density 0.5±5%
Design Wavelength
450-650 nm
Transmission
0.32
Chamfers
<0.35 mm at 45°
Material
Neutral density optical glass
MSDS
COA
Spec Sheet
1. Optical density selection from 0.1 to 4; 2. Ideal for low power applications; 3. Customized size and optical density are available upon request.
Overexposure prevention for cameras and other detectors