Colored Glass Filters

COLORED GLASS FILTERS

Neutral Density Filters (ND)

These filters possess level spectral transmittance characteristics in the visible region independent of wavelength.
They are ideal for exposure control in color photography, and are also used for light control in other measuring instruments.
They are designed to uphold designated performance capabilities through controlling the thickness.

Application: Camera

Images: ND70 / ND0.3 from top

The following 17 types of neutral density filters are available as standard items in 50-mm squares in addition to the 7 types of items listed in the table of material properties.
ND0/ ND1/ ND10/ ND20/ ND40/ ND70/ ND0.1/ ND3/ ND13
ND25/ ND50/ ND80/ ND0.3/ ND5/ ND15/ ND30/ ND60

Transmittance

Neutral Density Filter: Data

ItemStandard
Value
Color specification
(Standard illuminants A)
ThicknessReflective
Index
Chemical
property
Thermal propertiesMechanical
properties
Specific
gravity
Tav (%)xymm600nmDWDATgTsα
-30/70
α
100/300
HKFAd
pdfND0<0.01(2.5)1.55521542622762.47
pdfND0.10.1±0.05(3.1)1.51313490565655301002.41
pdfND0.30.3±0.05(2.9)1.51313490565655301002.41
pdfND11±0.5(2.3)1.51413490565655301002.41
pdfND33±0.50.4600.405(1.7)1.51613490565655301002.41
pdfND55±10.4580.406(1.5)1.51613490565655301002.41
pdfND1010±20.4470.420(3.0)1.51613490565655301002.41
pdfND1312.5±20.4470.419(2.7)1.5161153559558685301002.43
pdfND1515±20.4470.418(2.5)1.5211153559558685301002.43
pdfND2020±20.4430.420(3.1)1.5131153559558685301002.43
pdfND2525±2.50.4440.418(2.7)1.5161253560062665501002.42
pdfND3030±30.4440.417(2.3)1.5171253560062665501002.42
pdfND4040±40.4480.413(2.5)1.5062352557061655501002.42
pdfND5050±50.4480.412(2.5)1.505244955556266550902.42
pdfND6060±50.4480.413(1.6)1.509244955556266550902.42
pdfND7070±50.4480.411(2.9)1.5044547054066725101002.39
pdfND8080±50.4480.409(1.2)1.5124547054066725101002.39

* The listed data are standard values. As we are always improving our products, the data listed are subject to change without notice.