Aspheres - CVI Melles Griot - #1

Text version of the page

11 CVI MELLES GRIOT CAPABILITIES BROCHURE CVIMELLESGRIOT.COM Surface Tolerances Typical Mfg Limit Typical Mfg Limit Typical Mfg Limit Polished surface quality (scratch-dig) 40-20 10-5 40-20 20-10 40-20 10-5 Polished surface roughness (Å, RMS) 10 5 10 5 10 5 Polished surface power (waves, P-V @ 633 nm) l/4 l/20 l/4 l/20 l/4 l/20 Polished surface irregularity (waves, P-V @ 633 nm) l/4 l/20 l/4 l/20 l/4 l/20 Spherical radius accuracy (% radius) 0.10 0.02 0.10 0.02 0.10 0.02 Diamond Turned Surface roughness (Å, RMS) 50 20 60 30 40 10 Surface sag deviation from nominal aspheric shape (FR) 1.0 0.5 1.0 0.5 1.0 0.5 Dimensional Tolerances Diameter (mm) ±0.1 +0.00/-0.013 ±0.1 +0.00/-0.013 ±0.1 +0.00/-0.013 Center Thickness (mm) ±0.1 ±0.01 ±0.1 ±0.01 ±0.1 ±0.01 Wedge (arc seconds) 30 1 30 1 30 1 Clear aperture (%) 90 98 90 98 90 98 Silicon Zinc Selenide Germanium ASPHERIC & ASPHERIC DIFFRACTIVE LENSES | Optics The general tolerance specifications above provide a guideline regarding manufacturing capabilities for uncoated optics ranging in size up to 250 mm. The manufacturing limits are not absolute and may vary depending on material; tighter tolerances may be possible. Part specific tolerances may vary. All specifications do not need to be from single column. • Color correction • Reduced system complexity, fewer lenses • Higher performance systems • Deterministic manufacturing processes • Durable BBAR coatings Material Types CaF2 Si ZnS AMTIR ZnSe Ge Lens Types Plano-Concave Plano-Convex Bi-Convex Bi-Concave Meniscus