Dimensions in mm
Material: BK7 fine annealed or UV grade fused silica
Clear aperture: 90% center of diameter
Dimensions tolerance: +0/-0.15mm
Beam deviation: 90 degree 3arcmin or 10arcsec
Surface flatness:?/4 ~?at 546.1nm
Surface quality: 40-20 scratch-dig
Chamfer: 0.25mm typical
Coating: Protected aluminum with black paint overcoat on the reflective surfaces
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Material | A=B=C | D | Beam Deviation | Part No> |
BK7> | 10.0> | 11.95> | ±30arcsec | PEN10S30> |
BK7 > | 20.0 > | 21.65> | ±30arcsec> | PEN20S30> |
BK7 | 30.0 | 32.47 | ±30arcsec | PEN30S30 |