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High Precision Custom Bk7 Plano Convex Cylindrical Lens. Customized Dimensions: Length 2mm-500mm and Width 2mm-150mm available with custom options. Customized Focal Length: EFL ranges from 5mm to 50000mm tailored to specific needs. High Transmittance: Optical glass lenses offer transmittance greater than 95%. Premium Materials: Manufactured from H-K9L (N-BK7), Fused Silica (JGS1), and other crystals. Wide Lens Types: Available in Plano-Convex, Plano-Concave, Bi-Convex, Bi-Concave, and Meniscus. Low MOQ: Minimum Order Quantity is 1 PCS for flexible purchasing. Surface Quality: Surface quality rated 60-40 or better for high precision. OEM Service: Full OEM support available for custom optical element design.