Description
Specifications
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Lens Type:— Positive Fresnel (Converging / Plano-Convex Equivalent) — most common; condenser, collimator, magnifier— Negative Fresnel (Diverging / Plano-Concave Equivalent) — viewer / wide-field eyepiece applications
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Material:— PMMA (Acrylic): Lightweight, low cost, VIS transmissive (400–700 nm ~92% bulk), UV-absorptive unless UV-grade; max ~80°C— Optical Glass (BK7 / Fused Silica): Higher T in UV–VIS–NIR, temp-resistant (>400°C), higher cost; used in precision instruments— Polycarbonate (PC): Impact-resistant option (on request)
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Size / Clear Aperture: 3 mm – 300 mm (circular standard; square / rectangular up to 300×300 mm available)
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Effective Focal Length (EFL): 10 mm – 2000 mm+ (typical: 25 / 50 / 75 / 100 / 150 / 200 / 300 / 500 mm)
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Groove Density (Pitch): 20–200 grooves per inch (0.8–8 grooves/mm) — finer pitch = smoother image but higher tooling precision
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Focal Length Tolerance: ± 2% (typical)
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Surface Quality (Glass): 60-40 / 40-20 Scratch-Dig
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PMMA Surface: Molded — micro-groove fidelity per tool; visual inspection Class B (no macro defects)
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Thickness: 0.5 mm – 5.0 mm (PMMA typical 1.0 / 1.5 / 2.0 mm); Glass 2–10 mm
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Coating (Optional):— PMMA: UV-stabilized topcoat / Hard coat (2H–3H) / AR on backside (rare — front is grooved)— Glass: BBAR @ 400–700 nm / 550 nm / VIS-NIR
Our custom Fresnel lenses are manufactured in sizes ranging from 13mm mini Fresnel lenses to large Fresnel lenses up to 300mm, using high-quality PMMA or optical glass materials.
As an experienced Fresnel lens factory, we provide precision Fresnel lenses with high light efficiency, accurate groove design, and lightweight structure.
These PMMA and glass Fresnel lenses are widely used in LED lighting, solar concentrators, optical sensors, imaging systems, projection equipment, and industrial optical applications.
Custom options include diameter, focal length, groove pitch, thickness, and surface structure, ensuring optimal performance for different optical systems.
With stable production capacity, strict quality control, and OEM/ODM support, our custom Fresnel lenses offer a reliable solution for both standard and specialized optical projects.
