SLB-25-200N 25.0 mm Dia. x -200.0 mm FL; Plano-Concave Lens Uncoated

The SLB-25-200N is a Plano-Concave Lens with a 25.0 mm diameter and a focal length of -200.0 mm. This lens is sourced from OptoSigma, a renowned vendor in the optical industry. The lens is made of n-BK7 Schott, a high-quality optical glass known for its excellent transparency and low auto-fluorescence.

The lens geometry is characterized by its spherical shape, with a center thickness of 2.0 mm and an edge thickness of 2.8 mm. The inner and outer radii are both 0, indicating a plano surface on both sides of the lens. The back focal length (BFL) is -201.3 mm, slightly longer than the specified focal length due to the lens's concave shape.

This lens is uncoated, meaning it does not have any anti-reflective or other surface coatings. While this may result in higher reflective losses, it also means the lens can be used in a wider range of wavelengths without the risk of coating damage. The lens is designed for use at a single wavelength of 546.1 nm.

The lens is in stock and available for immediate purchase. For more information, including pricing and shipping details, please refer to the vendor's website using the provided weblink.