Spherical Lenses
Spherical optical lenses are available for a variety of uses, up to and including high-precision imaging. Lenses can be custom produced to your needs. The following specifications are available.
Choose PhotonExport to supply top-quality custom spherical optical lenses for your project needs.
- Lens diameter of 3.5 mm up to 250 mm
- Single or multiple element lenses (e.g. doublets)
- High precision imaging or commercial grade
- 10-5 scratch-dig maximum surface quality
- High durability, tight tolerances and a range of coatings available
Spherical lens manufacturing Specifications
| Commercial | Precision | High Precision | |
| Diameter | Ф3.5~Ф250 | Ф3.5~Ф250 | Ф3.5~Ф250 |
| Diameter Tolerance | 0/-0.02 | 0/-0.015 | 0/-0.001 |
| Thickness Tolerance | ±0.03 | ±0.01 | / |
| Surface Sag | Ra：0.001μm | Ra：0.001μm | Ra：0.0002μm |
| Radius | R5~R∞ | R5~R∞ | R5~R∞ |
| Power (P – V) | N=±5 | N=±2 | N=±1 |
| Irregularity (P – V) | ΔN=1 | ΔN=0.5 | ΔN=0.3 |
| Centering (Beam Deviation) | ≤60″ | ≤30″ | ≤10″ |
| Bevel Tolerance | ±0.1 | ±0.05 | ±0.02 |
| Surface Quality | 60-40 | 2020-10-20 00:00:00 | 2020-05-10 00:00:00 |
Lens Coatings Capabilities
| Substrates | All Glass Types |
| Spectral Ranges | 300～3000nm |
| Spectral Edge Tolerance | <1% Deviation, <0.2% Special Cases |
| Bandwidth | 1nm – Broadband |
| AR-Coating Reflectivity | <0.3% (absolute); <0.2% (Average) |
| Laser Damage Threshold | Up to 20 J/cm2@ 20ns Pulses |
| Durability | MIL-STD-810F, Section 507.4; MIL-C-48497A, Section 3.4.1 |