Purple glass filter

Selective absorption optical glass is an optical glass that can selectively absorb and transmit specific wavelengths in the ultraviolet, visible and infrared regions. This type of glass is usually called filter glass and is divided into three categories: selective absorption type, cutoff type and neutral gray.

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Description

1. characteristic
Material	Thickness	A[2856k]			D65			chemical stability		ND	α×10-7	Tg	Ts	S
Material	(mm)	x	y	Y	x	y	Y	DA	DW	ND	(℃)	(℃)	(℃)	S
ZB1	2	0.519	0.018	0.2	0.16	0.016	0.6	1	3	1.524	89	519	589	2.53
ZB2	2	0.158	0.02	0.2	0.16	0.017	0.7	1	2	1.495	58	551	655	2.4
ZB3	2	0.165	0.011	0.1	0.166	0.01	0.2	1	3	1.495	57	538	636	2.4

2. Specifications
Material	Thickness	300	360	400	480	700	710	720	800
Material	(mm)	(nm)	(nm)	(nm)	(nm)	(nm))	(nm)	(nm)	(nm)
ZB1	2			≥70.0	≤6.0	≤4.0
ZB2	2	≥31.0	≥78.2		≤3.7		≤9.2		≥80.4
ZB3	2	≥18.0	≥78.2		≤0.2			≤10.0	≥80.4

3. Bubbles, streaks, stress class levels
Material	Bubbles	streaks	stress class levels
ZB1	C-B	4	3
ZB2	C-B	4	3
ZB3	C-B	4	3

Purple glass filter

Purple glass filter

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