Frosted Quartz Plate with engraving OEM Size used for optical platform
Parameter | Standard Grade | Precision Grade | Ultra-precision Grade |
Dimensional Tolerance | +/-0.2 | +/-0.1 | +/-0.05 |
Clear Aperture | >80% to >90% | >80% to >90% | >80% to >90% |
Surface Quality | 80/50 | 60/40 | 40/20 |
Parallelism | 3 arc min | 1 arc min | 30 arc seconds |
Wavefront Distortion | 5λper 25mm | 1λper 25mm | λ/4 |
Protective Bevel | <0.25x45 deg | <0.25x45 deg | <0.25x45 deg |
Material | Synthetic fused Silica, Fused quartz, IR quartz, Borosilicate glass,Sapphire crystal, K9, B270, etc. | ||
Shape | Circular, square, triangular, oval, and other shaped windows | ||
Dimension | Large window, Ultra-thin window, Regular size window | ||
Precision | Ordinary refractory window, High precision optical window | ||
Coating | High anti-UV Film, antireflective film, gold, aluminum, silver series quartz glass, quartz UV filter, curved reflector and so on. |