Multiband Calibration Filters

V-10 and V-30 contain neodymium, and HY-1, holmium. All three filters exhibit outstanding absorption at specific wavelength. The filters are used for wavelength calibration and V-10 as a dual-color-type filter.

Color Filter Glass : Multiband Calibration Filter Data
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Item / Filter Type	Standard Value		Color Specification (Standard illuminants A)		Thickness	Reflective Index	Chemical Properties		Thermal Properties				Mechanical Properties		Specific Gravity
	T550 (%)	T586 (%)	x	y	mm	nd	Dw	DA	Tg	TS	α -30/70	α 100/300	HK	FA	S
V-10	>80	<2	0.447	0.386	2.5	1.551	4	1	500	545	103	117	520	130	2.87
V-30	68±3	<1	0.486	0.337	2.5	1.688	1	4	615	650	60	70	660	70	3.64
Item / Filter Type	Standard Value		Color Specification (Standard illuminants A)		Thickness	Reflective Index	Chemical Properties		Thermal Properties				Mechanical Properties		Specific Gravity
	T435 (%)	T445 (%)	x	y	mm	nd	Dw	DA	Tg	TS	α -30/70	α 100/300	HK	FA	S
HY-1	>80	<5	0.431	0.411	2.5	1.529	4	1	590	640	102	116	520	130	3.19
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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.