BICV-FS02 6 mm Dia. x -30 mm FL; Uncoated; Double-Concave Lens

The BICV-FS02 is a high-precision double-concave lens, sourced from WTS Photonics, with a diameter of 6 mm and a focal length of -30 mm. This lens is designed for use in optical systems where a negative focal length is required. The lens is uncoated, which means it does not have any additional layers to protect the surface or modify its optical properties.

The lens geometry is characterized by its base shape, which is circular, and its spherical shape. The thickness at the edge of the lens is 1.82 mm, while the thickness at the center is 1.5 mm. The effective focal length (EFL) is -30 mm, and the radii of curvature for the first and second surfaces are -27.84 mm and 27.84 mm, respectively. The back focal length (BFL) is 30.51 mm.

The lens is made from fused silica (mal-1965), a material known for its excellent optical properties, including high transparency across a wide range of wavelengths. The wavelength for this particular lens is 546.1 nm.

This lens is a double-concave lens, also known as a bi-concave lens, which means it has two concave surfaces. This type of lens is used to diverge light, making it ideal for applications such as beam expansion or collimation.

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