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SPECIFICATIONS: LASER BEAM EXPANDERS (LENS SPECIFICATIONS, INDIVIDUAL ELEMENTS) COATED
Focal Length (f): ± 0.5%
Back Focal Length (Bf): ± 0.5%
Center Thickness (tc): ± 0.2mm
| Diameter (Ø): |
+0.0 |
mm |
| -0.1 |
Edge Thickness (te): ± 0.2mm
Surface Accuracy: l/8 spherical at 6328Å
Surface Quality: 40-20, scratch-dig
Centration: Laser Precision less than 1 minute deviation
Optical Bevel: 0.2mm wide at 45°, all edges
Outside Diameter: Fine ground, 30µG finish
Material: Grade A, select special high index flint optical glass
Coating: All surfaces of these elements are coated with a broadband antireflection coating with a reflectivity per surface of less than 0.5% from 4500Å to 7500Å. |
