BICV-FS21 38 mm Dia. x -150 mm FL; Uncoated; Double-Concave Lens

The BICV-FS21 is a high-precision double-concave lens, sourced from WTS Photonics, with a diameter of 38 mm and a focal length of -150 mm. This lens is designed for use in applications where a negative focal length is required.

The lens is made from fused silica (mal-1965), a material known for its excellent optical properties, including high transparency and resistance to thermal shock. The base shape of the lens is circular, and it features a double-concave geometry, with radii of curvature of -138.5 mm and 138.5 mm for the first and second surfaces, respectively.

The lens has an edge thickness of 5.62 mm and a center thickness of 3 mm, providing a robust structure while maintaining a low profile. The effective focal length (EFL) is -150 mm, and the back focal length (BFL) is 151.03 mm. The lens does not have any coating, making it suitable for use in applications where coating is not required or desirable.

This lens is ideal for use in a variety of optical systems, including beam expanders, laser resonators, and other applications where a negative focal length is needed. The high-quality fused silica material ensures excellent optical performance, making this lens a reliable choice for your optical system.

Please note that the lens is in stock and available for immediate shipping, as indicated by the "weblink status" field in the item data. For more information, please refer to the vendor's website using the provided weblink.