Neutral Density Reflective Type Filters at 400-2000 nm

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Code	Material	Size	Thickness	Optical Density	Transmission	Price	Delivery	Add to cart
i 245-2501	Corning 7059	ø 25.4 mm	1.1 mm	0.1	79 % @ 550 nm	35 $	4 - 5 days
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i 245-2502	Corning 7059	ø 25.4 mm	1.1 mm	0.2	63 % @ 550 nm	35 $	4 - 5 days
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i 245-2503	Corning 7059	ø 25.4 mm	1.1 mm	0.3	50 % @ 550 nm	35 $	Request
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i 245-2504	Corning 7059	ø 25.4 mm	1.1 mm	0.4	40 % @ 550 nm	35 $	4 - 5 days
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i 245-2505	Corning 7059	ø 25.4 mm	1.1 mm	0.5	32 % @ 550 nm	35 $	4 - 5 days
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i 245-2510	Corning 7059	ø 25.4 mm	1.1 mm	1	10 % @ 550 nm	35 $	4 - 5 days
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i 245-2515	Corning 7059	ø 25.4 mm	1.1 mm	1.5	3 % @ 550 nm	35 $	4 - 5 days
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i 245-2520	Corning 7059	ø 25.4 mm	1.1 mm	2	1 % @ 550 nm	35 $	4 - 5 days
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i 245-2525	Corning 7059	ø 25.4 mm	1.1 mm	2.5	0.3 % @ 550 nm	35 $	4 - 5 days
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Glass Material	Corning 7059 (Borosilicate)
Outer Diameter	25.4 mm +0.0/-0.2 mm
Thickness	1.1 mm ± 0.1 mm
Surface Quality	40-20 scratch & dig (MIL-PRF-13830B)
Surface Flatness	λ @ 633 nm
Parallelism	<2 arcmin
Coating	Reflective
Damage Threshold	20 mJ/cm² (10 ns pulse)
Design wavelength	400-2000 nm
Optical density tolerance	±10% Nominal

EKSMA Optics Reflective Type Filters
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Neutral density (ND) reflective type filters of 1’’ (25.4 mm) size with optical density that varies from 0.1 to 2.5 are available.

Neutral density filters of Corning 7059 glass provide spectrally uniform attenuation from 400 nm to 2000 nm. The reflective coatings enable to reduce thermal effects when these filters are used with moderate power lasers.