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Plano-concave lenses can diverge a collimated beam from a virtual focal point and are commonly used in Galilean beam expanders. Plano-concave lenses have negative focal length and negative spherical aberration, which can be used to compensate for aberrations in other lenses within the system.
Our plano-concave lenses are available in a variety of substrates, including UV fused silica (UVFS), N-BK7, N-SF11, calcium fluoride (CaF2), barium fluoride (BaF2), silicon (Si), zinc selenide (ZnSe), magnesium fluoride (MgF2), germanium (Ge)…
Available in uncoated or AR-coated versions
Plano-concave Lenses Technical Parameters
| Substrate Material | H-K9L, Quartz, Calcium fluoride | Diameter | 5-800mm |
|---|---|---|---|
| Diameter Tolerance | +0.0/-0.1 mm | Thickness Tolerance | ±0.1 mm |
| Focal Length Tolerance | ±1% | Clear Aperture | >90% |
| Surface Quality | 60/40-20/10 | Surface Accuracy | λ/4- λ//8 |
| Lens Centering Error | <3' | Coated | Uncoated, VIS, NIR, SWIR |
H-K9L Plano Concave Lenses Transmittance Curve
Quartz Plano Concave Lenses Transmittance Curve
Calcium Fluoride Plano Concave Lenses Transmittance Curve
If you need to order in stock or custom plano concave lenses, please kindly contact our sales team:
info@borisuns.com/ jessie@borisuns.com
