These lenses have large range of lengths and are the optimum shape for producing real images at 1:1 magnification
Specifications | Material | Sapphire, Silicon, Gemanium | Radius | R≥3.0 | Surface Finish | N<3,N≥λ/4 | Centration | ≥1’ | Diameter | ≥3.0 ±0.01mm | T/D | 1/10 | Surface Quality | 20/10 | Bevel | 0.25mm at 45 deg | Coating | Single or Multi-layer films |
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Specifications | Material | Fused Silica, Quartz & optical Glass | Radius | R≥1.5 | Surface Finish | N<2,N≥λ/8 | Centration | ≥1’ | Diameter | ≥3.0 ±0.01mm | T/D | 1/10 | Surface Quality | 20/10 | Bevel | 0.25mm at 45 deg | Coating | Single or Multi-layer films |
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double-convex lens,bi-convex lens