Absorptive Optical Glass Neutral Density Filters are available with Optical Densities (O.D.) ranging from 0.10 to 4.00.  Absorptive Neutral Density Filters Attenuate incidence Visible light by absorption within the glass substrate; allowing for a nominal amount of transmitted light from 400-700nm.   These Filters are used in applications such as calibration filters, where minimal reflection of incident light is required.

For more information about Absorptive Glass ND Filters, refer to our Optics Tutorial page.
                                                  

SPECIFICATIONS Material: Absorptive Optical Glass Wavelength Range: 400-700nm Diameter (Ø) Tolerance: ± 0.50mm Square (Sq) Tolerance: ± 0.50mm Thickness: 7.0mm max based on O.D. Optical Density (O.D.) Tolerance: ± 10-15% of O.D.           Surface Quality:  80-50 scratch-dig Clear aperture: central 85%   All ND Filters are Unmounted All dimensions in mm

SIZE	O. D.	TRANSMISSION (%T)	PRODUCT #	PRICE	ORDER
12.7 Ø	0.10	79.43 % T ND Filter	12010NDA	$70.00	12010NDA
25.4 Ø	0.10	79.43 % T ND Filter	25010NDA	$90.00	25010NDA
50.8 Ø	0.10	79.43 % T ND Filter	50010NDA	$125.00	50010NDA
50.8 Sq	0.10	79.43 % T ND Filter	50010NDAS	$125.00	50010NDAS
12.7 Ø	0.20	70.79 % T ND Filter	12020NDA	$70.00	12020NDA
25.4 Ø	0.20	70.79 % T ND Filter	25020NDA	$90.00	25020NDA
50.8 Ø	0.20	70.79 % T ND Filter	50020NDA	$125.00	50020NDA
50.8 Sq	0.20	70.79 % T ND Filter	50020NDAS	$125.00	50020NDAS
12.7 Ø	0.30	50.12 % T ND Filter	12030NDA	$70.00	12030NDA
25.4 Ø	0.30	50.12 % T ND Filter	25030NDA	$90.00	25030NDA
50.8 Ø	0.30	50.12 % T ND Filter	50030NDA	$125.00	50030NDA
50.8 Sq	0.30	50.12 % T ND Filter	50030NDAS	$125.00	50030NDAS
12.7 Ø	0.40	39.81 % T ND Filter	12040NDA	$70.00	12040NDA
25.4 Ø	0.40	39.81 % T ND Filter	25040NDA	$90.00	25040NDA
50.8 Ø	0.40	39.81 % T ND Filter	50040NDA	$125.00	50040NDA
50.8 Sq	0.40	39.81 % T ND Filter	50040NDAS	$125.00	50040NDAS
12.7 Ø	0.50	31.62 % T ND Filter	12050NDA	$70.00	12050NDA
25.4 Ø	0.50	31.62 % T ND Filter	25050NDA	$90.00	25050NDA
50.8 Ø	0.50	31.62 % T ND Filter	50050NDA	$125.00	50050NDA
50.8 Sq	0.50	31.62 % T ND Filter	50050NDAS	$125.00	50050NDAS
12.7 Ø	0.60	25.12 % T ND Filter	12060NDA	$70.00	12060NDA
25.4 Ø	0.60	25.12 % T ND Filter	25060NDA	$90.00	25060NDA
50.8 Ø	0.60	25.12 % T ND Filter	50060NDA	$125.00	50060NDA
50.8 Sq	0.60	25.12 % T ND Filter	50060NDAS	$125.00	50060NDAS
12.7 Ø	0.70	19.95 % T ND Filter	12070NDA	$70.00	12070NDA
25.4 Ø	0.70	19.95 % T ND Filter	25070NDA	$90.00	25070NDA
50.8 Ø	0.70	19.95 % T ND Filter	50070NDA	$125.00	50070NDA
50.8 Sq	0.70	19.95 % T ND Filter	50070NDAS	$125.00	50070NDAS

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        · Also see our DUV Bandpass Filters


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