14PCV200-1-1 25.4 mm Dia. x -200 mm FL; Uncoated; Plano-Concave Lens

This is a Plano-Concave Lens, type of Spherical Lens, offered by Standa, a renowned vendor in the optical industry. The lens has a circular base shape with a diameter of 25.4 mm and a thickness that varies from 3.7 mm at the edge to 3 mm at the center. The effective focal length (EFL) of this lens is -200 mm, indicating that it is a diverging lens, causing parallel rays to spread out.

The lens is made of n-BK7 Schott, a popular optical glass due to its excellent optical properties and high Abbe number. The wavelength for this lens is 546 nm, a standard yellow-green line in the visible spectrum, often used in interferometry and other metrological applications.

The lens does not come with any coating, as indicated in the item data. However, various coatings can be applied to lenses to enhance their performance, such as anti-reflective coatings to reduce surface reflections, or protective coatings to increase durability.

For more information about this lens, including its availability and potential applications, please refer to the vendor's website at http://www.standaphotonics.com/lenses/plano-concave-lenses.php.