Light Balancing Filters (LA, LB)

The features of these filters include a gradual increase or decrease of the transmittance in the visible range. This type of filter is used for converting or controlling colour temperature when photographing. Adjust the polished thickness to create a filter with the capacity for any colour temperature conversion.

Applications: Cameras, inspection devices

Item	Standard Value	Color specification (Standard illuminants A)		Thickness	Refractive Index	Chemical properties		Thermal properties				Mechanical properties		Specific gravity
	V(mired)	x	y	mm	600 nm	DW	DA	Tg	Ts	α -30/70	α 100/300	HK	FA	s
LA20	+20±5	0.467	0.408	–	1.547	2	1	505	545	89	102	520	130	2.73
LA40	+40±5	0.469	0.413	–	1.554	2	1	505	550	88	102	520	130	2.76
E-LA80	+80±5	0.490	0.415	–	1.526	3	1	510	560	100	113	530	130	2.67
E-LA100	+100±5	0.500	0.415	–	1.525	3	1	510	560	100	113	530	130	2.67
E-LA120	+120±5	0.510	0.415	–	1.524	3	1	515	565	99	110	530	130	2.68
E-LA140	+140±5	0.519	0.415	–	1.524	3	1	515	565	99	110	530	130	2.68
E-LA200	+200±5	0.545	0.411	–	1.529	3	1	515	565	99	110	530	130	2.68
LB20	-20±5	0.433	0.406	–	1.522	3	1	470	515	95	117	490	110	2.81
LB40	-40±5	0.417	0.404	–	1.509	2	1	460	515	92	115	490	110	2.81
LB80	-80±5	0.388	0.398	–	1.541	2	1	460	510	99	116	490	110	2.83
LB100	-100±5	0.380	0.384	–	1.534	2	1	460	505	97	114	490	110	2.81
LB120	-120±5	0.365	0.379	–	1.517	2	1	480	535	94	105	520	130	2.57
LB140	-140±5	0.353	0.371	–	1.513	1	1	480	535	95	107	520	130	2.57
LB200	-200±7	0.316	0.342	–	1.514	1	1	480	530	92	105	520	130	2.57

The listed data are standard values. As we are always improving our products, the data listed are subject to change without notice.