Elliptical mirrors provide a circular aperture and profile when aligned at 45° to an incoming beam, making them especially useful and efficient in periscope applications. Newport's elliptical broadband metallic mirrors provide a good combination of performance and value for general purpose applications.
Material | BK7 or Fused Silica |
Design Wavelength | 546.1 nm |
BK7 | 1.5183 ± 0.0005 |
Fused Silica | 1.46008±0.00005 |
Diameter Tolerance | +0.00, -0.15 mm |
Thickness Tolerance | ±0.2 mm |
Paraxial Focal Length | ±2% |
Centration | <3 arc minutes |
Clear Aperture | >85% |
Surface Irregularity | λ/4@632.8 nm |
Surface Quality | 60-40 scratch and dig |
Protective Bevel | 0.25 mm x 45° |
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