The new  ZWO LRGB Filters  are designed to approximately equalize the flux of CMOS camera sensor.
Better transmission, Better coating,  Better color separation
 
the RGB color combine weights will be approximately 1:1:1
Fine-optically polished to ensure accurate 1/4 wavefront
more than 92% transmission at passband
Infrared wavelength 700-1100 nm cut-off
Precision off-band blocking
Multi-layers anti-reflection coating
Small spectral “gap” to minimize effect of light pollution
More parfocal – thickness 1.9+/-0.03 mm