Name: Neutral Density (ND) Filters
SKU: 3633
Availability: InStock

Question 1

Fixed ND (Neutral Density) Filters

Accepted Answer

ModelDescriptionND 0.1 - 80% Trans80.0% transmissionND 0.2 - 63% Trans63.0% transmissionND 0.3 - 50% Trans50.0% transmissionND 0.4 - 40% Trans40.0% transmissionND 0.5 - 32% Trans32.0% transmissionND 0.6 - 25% Trans25.0% transmissionND 1.0 - 10% Trans10.0% transmissionND 1.3 - 5% Trans5.0% transmissionND 1.5 - 3% Trans3.0% transmissionND 2.0 - 1% Trans1.0% transmissionND 3.0 - .1% Trans0.1% transmission

Question 2

Variable ND (Neutral Density) Filters

Accepted Answer

Variable ND Filters

Thorlabs offers both continuously variable and step variable ND filters. Round filters are available unmounted or mounted. The mounted versions allow the appropriate optical density to be quickly set. The continuously variable round filters can also be purchased in a 30 mm cage-compatible version. Our rectangular variable ND filters are available in one of two sizes and a number of optical density ranges. Additionally, we offer an adjustable, absorptive ND filter in a post-mountable, 30 mm cage-compatible housing.

ModelDescriptionDownloadNDC-50S-1Unmounted Step Variable ND Filter, Ø50 mm, OD: 0.04-1.0NDC-50S-3Unmounted Step Variable ND Filter, Ø50 mm, OD: 0.04-3.0NDC-100S-4Unmounted Step Variable ND Filter, Ø100 mm, OD: 0.04-4.0NDC-50S-1MMounted Step Variable ND Filter, Ø2.5\", OD: 0.04-1.0NDC-50S-3MMounted Step Variable ND Filter, Ø2.5\", OD: 0.04-3.0NDC-100S-4MMounted Step Variable ND Filter, Ø4.5\", OD: 0.04-4.0NDC-25C-2Unmounted Continuously Variable ND Filter, Ø25 mm, OD: 0.04 - 2.0NDC-25C-4Unmounted Continuously Variable ND Filter, Ø25 mm, OD: 0.04 - 4.0NDC-50C-2Unmounted Continuously Variable ND Filter, Ø50 mm, OD: 0.04 - 2.0NDC-50C-4Unmounted Continuously Variable ND Filter, Ø50 mm, OD: 0.04 - 4.0NDC-100C-2Unmounted Continuously Variable ND Filter, Ø100 mm, OD: 0.04 - 2.0NDC-100C-4Unmounted Continuously Variable ND Filter, Ø100 mm, OD: 0.04 - 4.0NDC-25C-2MMounted Continuously Variable ND Filter, Ø25 mm, OD: 0.04 - 2.0NDC-25C-4MMounted Continuously Variable ND Filter, Ø25 mm, OD: 0.04 - 4.0NDC-50C-2MMounted Continuously Variable ND Filter, Ø50 mm, OD: 0.04 - 2.0NDC-50C-4MMounted Continuously Variable ND Filter, Ø50 mm, OD: 0.04 - 4.0NDC-100C-2MMounted Continuously Variable ND Filter, Ø100 mm, OD: 0.04 - 2.0NDC-100C-4MMounted Continuously Variable ND Filter, Ø100 mm, OD: 0.04 - 4.0NDL-10S-2Step Variable ND Filter, 10 mm x 50 mm, OD: 0.3 - 2.0NDL-10S-4Step Variable ND Filter, 10 mm x 50 mm, OD: 0.1 - 4.0NDL-25S-2Step Variable ND Filter, 25 mm x 100 mm, OD: 0.3 - 2.0NDL-25S-4Step Variable ND Filter, 25 mm x 100 mm, OD: 0.1 - 4.0NDL-10C-2Continuously Variable ND Filter, 10 mm x 50 mm, OD: 0.04 - 2.0NDL-10C-4Continuously Variable ND Filter, 10 mm x 50 mm, OD: 0.04 - 4.0NDL-25C-2Continuously Variable ND Filter, 25 mm x 100 mm, OD: 0.04 - 2.0NDL-25C-4Continuously Variable ND Filter, 25 mm x 100 mm, OD: 0.04 - 4.0

Model	Description
ND 0.1 – 80% Trans	80.0% transmission
ND 0.2 – 63% Trans	63.0% transmission
ND 0.3 – 50% Trans	50.0% transmission
ND 0.4 – 40% Trans	40.0% transmission
ND 0.5 – 32% Trans	32.0% transmission
ND 0.6 – 25% Trans	25.0% transmission
ND 1.0 – 10% Trans	10.0% transmission
ND 1.3 – 5% Trans	5.0% transmission
ND 1.5 – 3% Trans	3.0% transmission
ND 2.0 – 1% Trans	1.0% transmission
ND 3.0 – .1% Trans	0.1% transmission

Model	Description	Download
NDC-50S-1	Unmounted Step Variable ND Filter, Ø50 mm, OD: 0.04-1.0
NDC-50S-3	Unmounted Step Variable ND Filter, Ø50 mm, OD: 0.04-3.0
NDC-100S-4	Unmounted Step Variable ND Filter, Ø100 mm, OD: 0.04-4.0
NDC-50S-1M	Mounted Step Variable ND Filter, Ø2.5″, OD: 0.04-1.0
NDC-50S-3M	Mounted Step Variable ND Filter, Ø2.5″, OD: 0.04-3.0
NDC-100S-4M	Mounted Step Variable ND Filter, Ø4.5″, OD: 0.04-4.0
NDC-25C-2	Unmounted Continuously Variable ND Filter, Ø25 mm, OD: 0.04 – 2.0
NDC-25C-4	Unmounted Continuously Variable ND Filter, Ø25 mm, OD: 0.04 – 4.0
NDC-50C-2	Unmounted Continuously Variable ND Filter, Ø50 mm, OD: 0.04 – 2.0
NDC-50C-4	Unmounted Continuously Variable ND Filter, Ø50 mm, OD: 0.04 – 4.0
NDC-100C-2	Unmounted Continuously Variable ND Filter, Ø100 mm, OD: 0.04 – 2.0
NDC-100C-4	Unmounted Continuously Variable ND Filter, Ø100 mm, OD: 0.04 – 4.0
NDC-25C-2M	Mounted Continuously Variable ND Filter, Ø25 mm, OD: 0.04 – 2.0
NDC-25C-4M	Mounted Continuously Variable ND Filter, Ø25 mm, OD: 0.04 – 4.0
NDC-50C-2M	Mounted Continuously Variable ND Filter, Ø50 mm, OD: 0.04 – 2.0
NDC-50C-4M	Mounted Continuously Variable ND Filter, Ø50 mm, OD: 0.04 – 4.0
NDC-100C-2M	Mounted Continuously Variable ND Filter, Ø100 mm, OD: 0.04 – 2.0
NDC-100C-4M	Mounted Continuously Variable ND Filter, Ø100 mm, OD: 0.04 – 4.0
NDL-10S-2	Step Variable ND Filter, 10 mm x 50 mm, OD: 0.3 – 2.0
NDL-10S-4	Step Variable ND Filter, 10 mm x 50 mm, OD: 0.1 – 4.0
NDL-25S-2	Step Variable ND Filter, 25 mm x 100 mm, OD: 0.3 – 2.0
NDL-25S-4	Step Variable ND Filter, 25 mm x 100 mm, OD: 0.1 – 4.0
NDL-10C-2	Continuously Variable ND Filter, 10 mm x 50 mm, OD: 0.04 – 2.0
NDL-10C-4	Continuously Variable ND Filter, 10 mm x 50 mm, OD: 0.04 – 4.0
NDL-25C-2	Continuously Variable ND Filter, 25 mm x 100 mm, OD: 0.04 – 2.0
NDL-25C-4	Continuously Variable ND Filter, 25 mm x 100 mm, OD: 0.04 – 4.0

Neutral Density (ND) Filters

Fixed ND (Neutral Density) Filters

Variable ND (Neutral Density) Filters

Spec

Fixed ND (Neutral Density) Filters

Variable ND (Neutral Density) Filters

Variable ND Filters

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