-18 to +18 diopters, VIS Coated, Manually Focus-Tunable Lens

Product Details Manually Adjustable Focal Length Concave to Convex Convertible Lens Shape BBAR Coating for Increased Performance Across Wavelength Range Optotune Manually Focus Tunable Lenses are designed to have their lens curvature change between convex, flat, and concave by the rotation of the outer adjustment ring. This allows for the focal length of the lens to be tuned to the precise value required for an optical application. The rotation mechanism is extremely durable, providing a lifecycle greater than 100,000 rotations. Optotune Manually Focus Tunable Lenses provide a simple, cost-effective solution for applications where system parameters are still being decided, such as in system prototyping or R&D applications. These focus tunable lenses can also be used singularly as an adjustable eye relief or as a pair to build a variable beam expander. Note: These lenses should not be stored in the negative focal state for long periods of time, as this can cause bubbles to form in the lens. These bubbles can be cleared by setting the lens to +18dpt for several hours. Specifications General Type: Specialty Lens Model Number: ML-20-37 Lifecycles: >100,000 Physical & Mechanical Properties Diameter (mm): 39.50 Thickness (mm): 18.60 Clear Aperture CA (mm): 20 Optical Properties Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More Low Dispersion Polymer Abbe Number (v d ): 65 Index of Refraction (n d ): 1.38 Coating: BBAR (400-700nm) Wavelength Range (nm): 400 – 700 Focus Range (mm): -18 to +18 diopter -55 to +55mm Transmitted Wavefront Error, RMS: 0.25λ @ 525nm Damage Threshold, By Design: Damage threshold for optical components varies by substrate material and coating. Click here to learn more about this specification. 10 kW/cm 2 @ 1064nm Threading & Mounting Mounting Threads: C-Mount (Female) Regulatory Compliance Certificate of Conformance: View ×