The SLB-30-250N is a Plano-Concave Lens, part of the Spherical Lens category, sourced from OptoSigma. This lens is characterized by its 30.0 mm diameter and a focal length of -250.0 mm, making it a negatively powered lens. The lens is uncoated, which means it does not have any anti-reflective or other surface coatings.
The lens is made of n-BK7 Schott, a popular optical glass due to its excellent optical properties and relatively low cost. The lens has a planar (flat) surface on one side and a concave surface on the other, with a radius of curvature of -129.75 mm. The center thickness of the lens is 2 mm, while the edge thickness is 2.9 mm.
The lens is designed to operate at a wavelength of 546.1 nm, which is in the middle of the visible light spectrum. It has no inner or outer radius specified, indicating that it is a simple plano-concave lens without any additional shaping or features.
The lens is currently in stock and available for purchase. For more information, please refer to the vendor's website linked below.
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Vendor: OptoSigma