This is a double-concave lens, type Spherical Lens (Concave-Concave), offered by Standa. The lens has a base shape of Circular and is designed for use in spherical optical systems. The lens features a diameter of 12.7 mm and a thickness at the edge of 3 mm, while the thickness at the center is 2.6 mm. The effective focal length (EFL) of this lens is -60 mm, indicating its diverging nature.
The lens is made of n-bk7 schott material, a popular choice for its high refractive index and low dispersion. The wavelength for this lens is 546 nm. The lens's geometry includes an inner radius of 0 mm and an outer radius of 0 mm, indicating a symmetrical design.
Please note that this lens is uncoated. Coatings are often applied to lenses to enhance their performance by reducing reflections, increasing transmission, or providing other desirable optical properties. However, this lens is designed to function without a coating.
The lens's geometry and material make it suitable for a wide range of applications, including imaging systems, beam shaping, and laser applications. However, due to its diverging nature, it may not be suitable for use as a focusing element in converging optical systems.
For more information, including pricing and availability, please refer to the vendor's website at http://www.standaphotonics.com/lenses/double-concave-lenses.php.