golden optical glass blank JB470 GG475

golden optical glass blank JB470 GG475

 Feature:

1.Having high quality.

2.  packing safely.
3.Color:orange,bule,yellow,grey,green,red,pink,purple

Technical indicators

1Surface quality: 0/0, 40/20 ~ 80/50
2 Surface Accuracy: 1/10 in, 1/4 into 2 into
3 Thickness tolerance: ± 0.01mm ~ ± 0.02mm
4 Parallelism: 5Arc second ~ 1Arc Minute
5. Processing range: up to 0.2mm thickness of the thinnest
6 Coating
7 steel

Colour glass filter stands out due to its selective absorption in the visible wavelength range. The filters appear to be colored if their filter effect lies within the visible light spectrum.