Feature

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


Description

3.0 inches (77 mm) round metal frame ring IR cut filter optical glass QB13

QB1--QB5, QB9--QB13, QB16--19,
QB21--QB24, QB26, QB29, BG38, BG39.

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