Plano-Concave Cylindrical Lens, Circular, N-BK7, Uncoated: 350-2000 nm OLYE240140RM
JCOPTIX circular plano-concave cylindrical lenses are aspheric optics that shape beams in one dimension to change spot size. A flat face and concave cylindrical face provide negative focal length; orienting the concave face toward the source during divergence reduces spherical and chromatic aberration. N-BK7 is a common lens material with good consistency and homogeneity for visible and near-infrared use. JCOPTIX circular plano-concave N-BK7 lenses are made from N-BK7 for high-power lasers, satellite technology, and astronomical optics. JCOPTIX offers lenses in materials including N-BK7 and UV fused silica. Each can be uncoated for broad bandwidth and high damage threshold or antireflection-coated. Three N-BK7 coating bands are available: 350-700 nm, 650-1050 nm, and 1050-1700 nm. Custom sizes, materials, focal lengths, and coatings meet different applications. Contact technical support for other requirements.
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Overview
Specifications
| Parameter | Value |
|---|---|
| Optical element material | N-BK7 |
| Dimensions | Ø25.4 mm |
| Clear Aperture Dimension | > Ø21.0 mm |
| Operating Wavelength Band | 350-2000 nm |
| Focal Length | -75.0 mm |
| Back focal length | -76.3 mm |
| Optical power | -13.3 |
| Abbe Number v_d | v_d = 64.17 |
| Design Wavelength | 587.6 nm |
| Refractive Index | 1.5168 |
| Radius | -38.8 mm |
| Center Thickness | 2 mm |
| Coating | Uncoated |
| Antireflection Coating | None |
| Diameter Tolerance | +0.0/-0.1 mm |
| Thickness Tolerance | ±0.1 mm |
| Focal Length Tolerance | ±1% |
| Decentration | ≤ 3 arcmin |
| Surface figure PV value | λ |
| Spherical surface fringe count | 3 |
| Surface Flatness [@633 nm] | λ/2 |
| Surface quality (scratch/dig) | 40/20 |
Key Features
Datasheet
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