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    2020-3-7 · Meniscus lenses are convex-concave lenses. BRD Optical provide meniscus lens in both positive and negative focal lengths. These lenses are useful when used with another lenses to increase or decrease the focal length. Positive Meniscus Lenses, Negative Meniscus Lens can be got here.

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    Convex meniscus lens, optical lens meniscus achromatic lens,positive meniscus lens Material: All kinds of high quality otpical glasses, quartz and crytal Diameter: φ5-φ320mm Radius: R1.5mm-∞ Center thinkness tolerance: ±0.01mm

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