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 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.

Delivery

Estimated delivery time: from 4 - 5 days

Material
Size
Optical Density
Internal Trans­mi­ttance

Round, ø25,4mm

Code Material Size Optical Density Internal Trans­mi­ttance Price Delivery Add to cart
240-2500 neutral density color glass ø25,4mm 0.05 89% @633 nm 23 $ 4 - 5 days To cart
240-2501 neutral density color glass ø25,4mm 0.1 80% @633 nm 23 $ 4 - 5 days To cart
240-2502 neutral density color glass ø25,4mm 0.2 63% @633 nm 23 $ 4 - 5 days To cart
240-2503 neutral density color glass ø25,4mm 0.3 50% @633 nm 23 $ Request To cart
240-2504 neutral density color glass ø25,4mm 0.4 40% @633 nm 23 $ 4 - 5 days To cart
240-2505 neutral density color glass ø25,4mm 0.5 32% @633 nm 23 $ 4 - 5 days To cart
240-2506 neutral density color glass ø25,4mm 0.6 25% @633 nm 23 $ 4 - 5 days To cart
240-2507 neutral density color glass ø25,4mm 0.7 20% @633 nm 23 $ 4 - 5 days To cart
240-2508 neutral density color glass ø25,4mm 0.8 15% @633 nm 23 $ 4 - 5 days To cart
240-2509 neutral density color glass ø25,4mm 0.9 12.5% @633 nm 23 $ 4 - 5 days To cart
240-2510 neutral density color glass ø25,4mm 1 10% @633 nm 23 $ 4 - 5 days To cart
240-2515 neutral density color glass ø25,4mm 1.5 3% @633 nm 23 $ 4 - 5 days To cart
240-2520 neutral density color glass ø25,4mm 2 1% @633 nm 24 $ 4 - 5 days To cart
240-2530 neutral density color glass ø25,4mm 3 0.1% @633 nm 25 $ 4 - 5 days To cart
240-2540 neutral density color glass ø25,4mm 4 0.01% @633 nm 27 $ Request To cart

Rectangular, 25,4x25,4mm

Code Material Size Optical Density Internal Trans­mi­ttance Price Delivery Add to cart
240-2600 neutral density color glass 25,4x25,4mm 0.05 89% @633 nm 24 $ Request To cart
240-2601 neutral density color glass 25,4x25,4mm 0.1 80% @633 nm 24 $ 4 - 5 days To cart
240-2602 neutral density color glass 25,4x25,4mm 0.2 63% @633 nm 24 $ 4 - 5 days To cart
240-2603 neutral density color glass 25,4x25,4mm 0.3 50% @633 nm 24 $ 4 - 5 days To cart
240-2604 neutral density color glass 25,4x25,4mm 0.4 40% @633 nm 24 $ Request To cart
240-2605 neutral density color glass 25,4x25,4mm 0.5 32% @633 nm 24 $ Request To cart
240-2606 neutral density color glass 25,4x25,4mm 0.6 25% @633 nm 24 $ Request To cart
240-2607 neutral density color glass 25,4x25,4mm 0.7 20% @633 nm 24 $ Request To cart
240-2608 neutral density color glass 25,4x25,4mm 0.8 15% @633 nm 24 $ Request To cart
240-2609 neutral density color glass 25,4x25,4mm 0.9 12.5% @633 nm 24 $ Request To cart
240-2610 neutral density color glass 25,4x25,4mm 1 10% @633 nm 24 $ Request To cart
240-2615 neutral density color glass 25,4x25,4mm 1.5 12.5% @633 nm 24 $ Request To cart
240-2620 neutral density color glass 25,4x25,4mm 2 1% @633 nm 25 $ Request To cart
240-2630 neutral density color glass 25,4x25,4mm 3 0.1% @633 nm 27 $ 4 - 5 days To cart
240-2640 neutral density color glass 25,4x25,4 mm 4 0.01% @633 nm 28 $ Request To cart

Round, ø50,8mm

Code Material Size Optical Density Internal Trans­mi­ttance Price Delivery Add to cart
240-5000 neutral density color glass ø50,8mm 0.05 89% @633 nm 62 $ 4 - 5 days To cart
240-5001 neutral density color glass ø50,8mm 0.1 80% @633 nm 62 $ 4 - 5 days To cart
240-5002 neutral density color glass ø50,8mm 0.2 63% @633 nm 62 $ 4 - 5 days To cart
240-5003 neutral density color glass ø50,8mm 0.3 50% @633 nm 62 $ 4 - 5 days To cart
240-5004 neutral density color glass ø50,8mm 0.4 40% @633 nm 62 $ Request To cart
240-5005 neutral density color glass ø50,8mm 0.5 32% @633 nm 62 $ 4 - 5 days To cart
240-5006 neutral density color glass ø50,8mm 0.6 25% @633 nm 62 $ Request To cart
240-5007 neutral density color glass ø50,8mm 0.7 20% @633 nm 62 $ Request To cart
240-5008 neutral density color glass ø50,8mm 0.8 15% @633 nm 62 $ Request To cart
240-5009 neutral density color glass ø50,8mm 0.9 12.5% @633 nm 62 $ Request To cart
240-5010 neutral density color glass ø50,8mm 1 10% @633 nm 62 $ 4 - 5 days To cart
240-5015 neutral density color glass ø50,8mm 1.5 3% @633 nm 62 $ 4 - 5 days To cart
240-5020 neutral density color glass ø50,8mm 2 1% @633 nm 63 $ 4 - 5 days To cart
240-5030 neutral density color glass ø50,8mm 3 0.1% @633 nm 64 $ 4 - 5 days To cart
240-5040 neutral density color glass ø50,8mm 4 0.01% @633 nm 65 $ 4 - 5 days To cart

Rectangular, 50,8x50,8 mm

Code Material Size Optical Density Internal Trans­mi­ttance Price Delivery Add to cart
240-5600 neutral density color glass 50,8x50,8mm 0.05 89% @633 nm 61 $ Request To cart
240-5601 neutral density color glass 50,8x50,8mm 0.1 80% @633 nm 61 $ 4 - 5 days To cart
240-5602 neutral density color glass 50,8x50,8mm 0.2 63% @633 nm 61 $ 4 - 5 days To cart
240-5603 neutral density color glass 50,8x50,8mm 0.3 50% @633 nm 61 $ 4 - 5 days To cart
240-5604 neutral density color glass 50,8x50,8mm 0.4 40% @633 nm 61 $ Request To cart
240-5605 neutral density color glass 50,8x50,8mm 0.5 32% @633 nm 61 $ 4 - 5 days To cart
240-5606 neutral density color glass 50,8x50,8mm 0.6 25% @633 nm 61 $ 4 - 5 days To cart
240-5607 neutral density color glass 50,8x50,8mm 0.7 20% @633 nm 61 $ Request To cart
240-5608 neutral density color glass 50,8x50,8mm 0.8 15% @633 nm 61 $ Request To cart
240-5609 neutral density color glass 50,8x50,8mm 0.9 12.5% @633 nm 61 $ Request To cart
240-5610 neutral density color glass 50,8x50,8mm 1 10% @633 nm 61 $ 4 - 5 days To cart
240-5615 neutral density color glass 50,8x50,8mm 1.5 3% @633 nm 61 $ 4 - 5 days To cart
240-5620 neutral density color glass 50,8x50,8mm 2 1% @633 nm 62 $ 4 - 5 days To cart
240-5630 neutral density color glass 50,8x50,8mm 3 0.1% @633 nm 63 $ 4 - 5 days To cart
240-5640 neutral density color glass 50,8x50,8 mm 4 0.01% @633 nm 64 $ 4 - 5 days To cart
Delicious

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

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