This is a high-quality double-concave lens, sourced from the reputable vendor Standa. The lens is designed with a base shape of a circle and features a spherical geometry. The lens has a diameter of 25.4 mm and a center thickness of 3.1 mm, with an edge thickness of 4 mm. The effective focal length (EFL) of this lens is -125 mm, indicating its concave nature.
The lens is made from the material n-bk7 schott, a popular choice for its excellent optical properties. It is designed to work optimally with a wavelength of 546 nm. The lens does not come with any coating, as indicated in the item data.
For more detailed information, please refer to the vendor's website, where you can find the lens's specifications and other related products. The link to the website is provided in the item data and has been verified to be valid and in stock.