Plano-Concave Lens, CaF₂, AR Coating T10: 2000-5000 nm OLE240744-T10
This JCOPTIX plano-concave lens uses calcium fluoride for applications requiring high infrared and ultraviolet transmission. Its extremely high laser damage threshold supports excimer lasers. Refractive index is 1.35-1.51 over 180-8000 nm. It offers good chemical inertness and greater hardness than similar barium, magnesium, or lithium fluorides. JCOPTIX offers a diameter of 25.4 mm, uncoated for broad bandwidth and high damage threshold or antireflection-coated for 2000-5000 nm. Average surface reflection below 1% improves transmission. Contact technical support for other custom requirements. Plano-concave, CaF₂, T10 antireflection coating for 2000-5000 nm, in standard SM1 tubes: OLE240740-T10M and OLE240744-T10M. Plano-concave, CaF₂, T10 antireflection coating for 2000-5000 nm: OLE240740-T10 and OLE240744-T10.
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Overview
Specifications
| Parameter | Value |
|---|---|
| Optical element material | CaF₂ |
| Diameter | 25.4 mm |
| Clear Aperture Dimension [of Outer Diameter] | >90% of Outer Diameter |
| Operating Wavelength | 2000-5000 nm |
| Focal Length | -100.0 mm |
| Back focal length | -102.1 mm |
| Optical power | -10 |
| Abbe Number v_d | v_d =94.9958544133 |
| Design Wavelength | 587.6 nm |
| Refractive Index | 1.43384927882 |
| Radius | -43.4 |
| Center Thickness | 3 mm |
| Edge Thickness [REF] | 4.9 mm (REF) |
| Coating | Antireflection Coating |
| Antireflection Coating R_avg [@ 2000-5000 nm] | R_avg< 1.25% @ 2000-5000 nm |
| Diameter Tolerance | +0.0/-0.1 mm |
| Thickness Tolerance | ± 0.1 mm |
| Focal Length Tolerance | ± 1% |
| Decentration | < 3 arcmin |
| Surface figure PV value | λ/2 |
| Spherical surface fringe count | 3 |
| Surface flatness [@633 nm] | λ/2 |
| Surface quality (scratch/dig) | 40/20 |
Key Features
Datasheet
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