This is a PLCC-25.4-90.8-C laser grade plano-concave lens, sourced from CVI Laser Optics. The lens has a diameter of 25.4 mm and a center thickness of 3.3 mm. The effective focal length (EFL) of this lens is -176mm, making it a concave lens. The radius of curvature for this lens is -90.8 mm.
The lens is made of N-BK7 Schott glass, a popular material for optical elements due to its excellent optical properties and wide transmission range. This lens is uncoated, meaning it does not have any additional layers to enhance its optical properties.
The lens is designed to work with a wavelength of 588 nm. It is a spherical lens, which means it has the same curvature in all meridional sections, and it is circular in shape. The lens does not have any inner or outer radius specified, indicating that it is a simple plano-concave lens.
The lens is in stock and available for immediate purchase. More detailed information about this lens can be found in the vendor's catalog, which is available at https://www.idexot.com/media/wysiwyg/cms-pages/pdf/2-Spherical_Lenses.pdf.