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Plano-Concave Lenses SKU: 112-5125E
• Have negative focal lengths • Diverge collimated incident light • Forms only virtual images which are seen through the lens • Reduce spherical aberration, coma and distortion at negative-infinite or near-infinite conjugate ratios • With the concave surface facing the…
Variant specifications
| Specification | Value |
|---|---|
| Material | CaF2 |
| Focal Length | -200 mm |
| Diameter | 12.7 mm |
| ROC | -83.6 mm |
| CT | 1.8 mm |
| ET | 2 mm |
| Coating | Uncoated |
| Group | CaF2, Size: dia 12.7 mm |
Shared product specifications
These specifications apply across the Plano-Concave Lenses product family.
| Material | BK7, UV FS, CaF₂ |
| Surface quality | 40-20 scratch & dig (MIL-PRF-13830B) |
| Clear aperture | 90% of the diameter |
| Diameter tolerance | +0.00-0.12 mm |
| Thickness tolerance | ±0.2 mm |
| Surface irregularity | λ / 8 @ 633 nm |
| Surface irregularity for CaF₂ | λ / 4 @ 633 nm |
| Concentricity | 3 arcmin |
| Paraxial focal length: / BK7 / UV FS / CaF₂ | ±2% @ 546 nm / ±2% @ 355 nm / ±2% @ 2940 nm |
Variant files
Technical drawings, models and data files for SKU 112-5125E.
Product brochures
Shared documentation for the complete product family.