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Neutral Density Absorption Type Filters at 450-650 nm

Neutral Density Absorption Type Filters at 450-650 nm

EKSMA OPTICS neutral density (ND) filters attenuate VIS spectral region. The optical density varies from 0.1 to 3.0, 1 or 2 inches size square and round shapes are available.

from 28 $
delivery Estimated delivery time: 4 - 5 days
Qty discount: 5-9 pcs. of the same item - 5% OFF! 10+ pcs. 10% OFF!
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Size
Optical Density
Internal Trans­mi­ttance
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Round, ø25.4 mm
Code Material Size Optical Density Internal Trans­mi­ttance Price Delivery Add to cart
240-2500 neutral density color glass ø25.4 mm 0.05 89% @ 546 nm 28 $ 4 - 5 days
i 240-2501 neutral density color glass ø25.4 mm 0.1 80% @ 546 nm 28 $ 4 - 5 days
i 240-2502 neutral density color glass ø25.4 mm 0.2 63% @ 546 nm 28 $ 4 - 5 days
i 240-2503 neutral density color glass ø25.4 mm 0.3 50% @ 546 nm 28 $ 4 - 5 days
i 240-2504 neutral density color glass ø25.4 mm 0.4 40% @ 546 nm 28 $ 4 - 5 days
i 240-2505 neutral density color glass ø25.4 mm 0.5 32% @ 546 nm 28 $ 4 - 5 days
i 240-2506 neutral density color glass ø25.4 mm 0.6 25% @ 546 nm 28 $ 4 - 5 days
i 240-2507 neutral density color glass ø25.4 mm 0.7 20% @ 546 nm 28 $ 4 - 5 days
i 240-2508 neutral density color glass ø25.4 mm 0.8 15% @ 546 nm 28 $ 4 - 5 days
i 240-2509 neutral density color glass ø25.4 mm 0.9 12.5% @ 546 nm 28 $ 4 - 5 days
i 240-2510 neutral density color glass ø25.4 mm 1 10% @ 546 nm 28 $ 4 - 5 days
i 240-2515 neutral density color glass ø25.4 mm 1.5 3% @ 546 nm 28 $ 4 - 5 days
i 240-2520 neutral density color glass ø25.4 mm 2 1% @ 546 nm 29 $ 4 - 5 days
i 240-2530 neutral density color glass ø25.4 mm 3 0.1% @ 546 nm 31 $ 4 - 5 days
i 240-2540 neutral density color glass ø25.4 mm 4 0.01% @ 546 nm 33 $ 4 - 5 days
i 240-2550 neutral density color glass ø25.4 mm 5 0.001% @ 546 nm 36 $ 4 - 5 days
i 240-2560 neutral density color glass ø25.4 mm 6 0.0001% @ 546 nm 40 $ 4 - 5 days
Rectangular, 25.4 x 25.4 mm
Code Material Size Optical Density Internal Trans­mi­ttance Price Delivery Add to cart
i 240-2600 neutral density color glass 25.4 x 25.4 mm 0.05 89% @ 546 nm 29 $ 4 - 5 days
i 240-2601 neutral density color glass 25.4 x 25.4 mm 0.1 80% @ 546 nm 29 $ 4 - 5 days
i 240-2602 neutral density color glass 25.4 x 25.4 mm 0.2 63% @ 546 nm 29 $ Request
i 240-2603 neutral density color glass 25.4 x 25.4 mm 0.3 50% @ 546 nm 29 $ 4 - 5 days
i 240-2604 neutral density color glass 25.4 x 25.4 mm 0.4 40% @ 546 nm 29 $ 4 - 5 days
i 240-2605 neutral density color glass 25.4 x 25.4 mm 0.5 32% @ 546 nm 29 $ 4 - 5 days
i 240-2606 neutral density color glass 25.4 x 25.4 mm 0.6 25% @ 546 nm 29 $ 4 - 5 days
i 240-2607 neutral density color glass 25.4 x 25.4 mm 0.7 20% @ 546 nm 29 $ Request
i 240-2608 neutral density color glass 25.4 x 25.4 mm 0.8 15% @ 546 nm 29 $ Request
i 240-2609 neutral density color glass 25.4 x 25.4 mm 0.9 12.5% @ 546 nm 29 $ Request
i 240-2610 neutral density color glass 25.4 x 25.4 mm 1 10% @ 546 nm 29 $ 4 - 5 days
i 240-2615 neutral density color glass 25.4 x 25.4 mm 1.5 12.5% @ 546 nm 29 $ Request
i 240-2620 neutral density color glass 25.4 x 25.4 mm 2 1% @ 546 nm 31 $ 4 - 5 days
i 240-2630 neutral density color glass 25.4 x 25.4 mm 3 0.1% @ 546 nm 32 $ Request
i 240-2640 neutral density color glass 25.4 x 25.4 mm 4 0.01% @ 546 nm 34 $ 4 - 5 days
i 240-2650 neutral density color glass 25.4 x 25.4 mm 5 0.001% @ 546 nm 38 $ Request
240-2660 neutral density color glass 25.4 x 25.4 mm 6 0.0001% @ 546 nm 41 $ Request
Round, ø50.8 mm
Code Material Size Optical Density Internal Trans­mi­ttance Price Delivery Add to cart
240-5000 neutral density color glass ø50.8 mm 0.05 89% @ 546 nm 74 $ Request
i 240-5001 neutral density color glass ø50.8 mm 0.1 80% @ 546 nm 74 $ 4 - 5 days
i 240-5002 neutral density color glass ø50.8 mm 0.2 63% @ 546 nm 74 $ Request
i 240-5003 neutral density color glass ø50.8 mm 0.3 50% @ 546 nm 74 $ Request
i 240-5004 neutral density color glass ø50.8 mm 0.4 40% @ 546 nm 74 $ 4 - 5 days
i 240-5005 neutral density color glass ø50.8 mm 0.5 32% @ 546 nm 74 $ 4 - 5 days
i 240-5006 neutral density color glass ø50.8 mm 0.6 25% @ 546 nm 74 $ Request
i 240-5007 neutral density color glass ø50.8 mm 0.7 20% @ 546 nm 74 $ Request
i 240-5008 neutral density color glass ø50.8 mm 0.8 15% @ 546 nm 74 $ 4 - 5 days
i 240-5009 neutral density color glass ø50.8 mm 0.9 12.5% @ 546 nm 74 $ 4 - 5 days
i 240-5010 neutral density color glass ø50.8 mm 1 10% @ 546 nm 74 $ 4 - 5 days
i 240-5015 neutral density color glass ø50.8 mm 1.5 3% @ 546 nm 74 $ Request
i 240-5020 neutral density color glass ø50.8 mm 2 1% @ 546 nm 75 $ 4 - 5 days
i 240-5030 neutral density color glass ø50.8 mm 3 0.1% @ 546 nm 77 $ Request
i 240-5040 neutral density color glass ø50.8 mm 4 0.01% @ 546 nm 79 $ Request
i 240-5050 neutral density color glass ø50.8 mm 5 0.001% @ 546 nm 84 $ 4 - 5 days
240-5060 neutral density color glass ø50.8 mm 6 0.0001% @ 546 nm 88 $ Request
Rectangular, 50.8 x 50.8 mm
Code Material Size Optical Density Internal Trans­mi­ttance Price Delivery Add to cart
240-5600 neutral density color glass 50.8 x 50.8 mm 0.05 89% @ 546 nm 73 $ 4 - 5 days
i 240-5601 neutral density color glass 50.8 x 50.8 mm 0.1 80% @ 546 nm 73 $ Request
i 240-5602 neutral density color glass 50.8 x 50.8 mm 0.2 63% @ 546 nm 73 $ 4 - 5 days
i 240-5603 neutral density color glass 50.8 x 50.8 mm 0.3 50% @ 546 nm 73 $ 4 - 5 days
i 240-5604 neutral density color glass 50.8 x 50.8 mm 0.4 40% @ 546 nm 73 $ 4 - 5 days
i 240-5605 neutral density color glass 50.8 x 50.8 mm 0.5 32% @ 546 nm 73 $ 4 - 5 days
i 240-5606 neutral density color glass 50.8 x 50.8 mm 0.6 25% @ 546 nm 73 $ 4 - 5 days
i 240-5607 neutral density color glass 50.8 x 50.8 mm 0.7 20% @ 546 nm 73 $ 4 - 5 days
i 240-5608 neutral density color glass 50.8 x 50.8 mm 0.8 15% @ 546 nm 73 $ 4 - 5 days
i 240-5609 neutral density color glass 50.8 x 50.8 mm 0.9 12.5% @ 546 nm 73 $ 4 - 5 days
i 240-5610 neutral density color glass 50.8 x 50.8 mm 1 10% @ 546 nm 73 $ 4 - 5 days
i 240-5615 neutral density color glass 50.8 x 50.8 mm 1.5 3% @ 546 nm 73 $ Request
i 240-5620 neutral density color glass 50.8 x 50.8 mm 2 1% @ 546 nm 74 $ 4 - 5 days
i 240-5630 neutral density color glass 50.8 x 50.8 mm 3 0.1% @ 546 nm 75 $ 4 - 5 days
i 240-5640 neutral density color glass 50.8 x 50.8 mm 4 0.01% @ 546 nm 78 $ 4 - 5 days
i 240-5650 neutral density color glass 50.8 x 50.8 mm 5 0.001% @ 546 nm 83 $ 4 - 5 days
240-5660 neutral density color glass 50.8 x 50.8 mm 6 0.0001% @ 546 nm 87 $ 4 - 5 days

Material neutral density color glass
Surface quality
60-40 scratch & dig (MIL-PRF-13830B)
Surface flatness 1 λ per inch @ 633 nm
Parallelism 3 arcmin
Diameter tolerance +0.0/-0.2 mm
Clear aperture 90% of diameter
Design wavelength 450-650 nm
Optical density tolerance +/- 5% of density

EKSMA Optics Neutral Density Absorption Type Filters
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EKSMA OPTICS neutral density (ND) filters attenuate VIS spectral region. The optical density varies from 0.1 to 3.0, 1 or 2 inches size square and roud shapes are available.

Neutral density absorption type filters decrease the intensity of light without altering the relative spectral distribution of the energy. They are used to filter the entire visible spectrum evenly, allowing light reduction, without influencing color or contrast. Attenuation is accomplished by using a light-absorbing glass.