This is a Plano-Concave lens, type of spherical lens, offered by Qioptiq Photonics. The lens has a base shape of a circle and a diameter of 25.4 mm. The center thickness of the lens is 1.5 mm. The effective focal length (EFL) of this lens is -200mm, indicating that it is a diverging lens, causing incoming light rays to spread out.
The lens is made of N-BK7, a type of glass manufactured by Schott. This material is known for its excellent optical properties, making it a popular choice for various optical applications. The lens is uncoated, meaning it does not have any additional layers to enhance its optical properties or protect it from environmental factors.
The lens is designed to operate at a wavelength of 588 nm. The inner and outer radii of the lens are 0, indicating that the lens is plano-concave, featuring one flat surface and one curved surface.
The lens is in stock and available for purchase on the Qioptiq Photonics website. For more detailed information, you can visit the provided weblink.