SLSQ-25B-30N 25.0 mm Dia. x -29.7 mm FL; Double-Concave Lens Uncoated

The SLSQ-25B-30N is a high-quality double-concave lens offered by OptoSigma, a renowned vendor in the optical industry. This lens, with a diameter of 25.0 mm, is designed for use in various optical systems that require concave-concave lenses.

The lens features a base shape of a circle, with a thickness of 8 mm at the edge and 2 mm at the center. The effective focal length (EFL) of this lens is -29.7 mm, making it suitable for applications that require a negative focal length. The first radius of curvature (R1) is -27.6 mm, while the second radius (R2) is 27.6 mm, indicating a symmetrical double-concave design.

The lens is made of fused silica, a material known for its excellent optical properties, including high transparency and resistance to thermal shock. The material ID for this lens is "fused sil mal-1965", indicating its specific type of fused silica.

The SLSQ-25B-30N is designed to operate at a wavelength of 546.1 nm. It is uncoated, meaning it does not have any additional layers to enhance its optical properties. However, this lens can be customized with various coatings upon request.

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