SLB-25.4-200N 25.4 mm Dia. x -200.0 mm FL; Plano-Concave Lens Uncoated

The SLB-25.4-200N is a Plano-Concave Lens with a 25.4 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 material, a high-quality glass known for its excellent optical properties.

The lens geometry is characterized by a thickness edge of 2.8 mm and a thickness center of 2 mm. The inner radius is 0 mm, and the outer radius is also 0 mm, indicating a flat surface on one side and a concave surface on the other. The back focal length (BFL) is -201.3 mm, slightly longer than the specified focal length due to the thickness of the lens.

This lens is uncoated, meaning it does not have any additional layers to enhance its optical properties. While this may result in a lower transmission rate and a higher susceptibility to environmental factors, it also means that the lens is more cost-effective and suitable for applications where such enhancements are not necessary.

The lens is designed to work with a wavelength of 546.1 nm, making it suitable for a wide range of applications in the visible light spectrum. It is a spherical lens, which means it has a curved surface that refracts light evenly in all directions. This makes it ideal for applications that require a wide field of view or uniform light distribution.