Material
BK7 grade A optical glass
Dimension Tolerance
±0.2mm
Thickness Tolerance
Surface quality
60-40
Clear Aperture
>85%
Flatness
λ/4 per 25mm@633nm
Parallelism
±3'
Bevel
<0.25mm X 45°
Coating
According To Customer’s Specifications
Keywords:
Good at Lip Makeup