Color Filter Glass : Neutral Density Filter Data

Item / Filter Type	Standard Value	Color Specification (Standard illuminants A)		Thickness	Reflective Index	Chemical Properties		Thermal Properties				Mechanical Properties		Specific Gravity
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Color Filter Glass : Neutral Density Filter Data
Item / Filter Type	T_av (%)	x	y	mm	n_d	D_w	D_A	T_g	T_S	α -30/70	α 100/300	H_K	F_A	S
ND-03	10±2	0.453	0.408	2.5	-	1	3	490	565	60	65	530	100	2.41
ND-13	12.5±2	0.446	0.416	2.5	1.510	1	1	535	595	58	68	530	100	2.43
ND-25	25±2.5	0.447	0.415	2.5	1.507	1	2	535	600	62	66	550	100	2.42
ND-40	40±4	0.449	0.413	2.5	1.504	2	3	525	570	61	65	550	100	2.42
ND-50	50±5	0.445	0.412	2.5	1.504	2	4	495	555	62	66	550	90	2.42
ND-70	70±5	0.449	0.410	2.5	1.500	4	5	470	540	66	72	510	100	2.39
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Note: The listed data are standard value. Because of continuous product improvement, the various data listed are subject to change without notice.