Description
70×70mm Plano-Concave Cylindrical Lens – Square Format for One-Dimensional Beam Divergence
Basic Specifications
Parameter: Specification
Dimension: 70 × 70 mm
Type: Plano-Concave Cylindrical Lens
Focal Length: Negative (diverging), customizable
Radius of Curvature: Customizable
Substrate Material: BK7 / Fused Silica / CaF2 / ZnSe
Wavelength Range: 190 nm – 16000 nm (material dependent)
Coating: Uncoated / AR Coating (single wavelength or broadband)
Surface Quality: 40-20 scratch-dig (MIL-PRF-13830B)
Surface Accuracy: λ/4 @ 632.8 nm
Clear Aperture: ≥90% of dimension
Application: Beam expansion, astigmatism correction, laser diode collimation, projection systems
Key Benefits:
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Compact square format – easy integration into optical assemblies
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Single-axis divergence – expands beams in one direction only
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Astigmatism compensation – corrects elliptical laser diode output
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Multiple material options – BK7, fused silica, CaF2, ZnSe for UV to IR
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Custom AR coatings – optimized for your operating wavelength
Ideal for laser beam expanders, anamorphic imaging systems, laser diode fast-axis correction, barcode scanners, and structured light projectors.
