G314323525 25.4 mm Dia. N-BK7 Plano-Concave Lens; EFL=-200mm 725-1050nm

This is a Plano-Concave lens, a type of spherical lens, sourced from Qioptiq Photonics. The lens has a diameter of 25.4 mm and a center thickness of 1.5 mm. The effective focal length (EFL) of this lens is -200mm, making it a negative or diverging lens. This particular lens is designed to operate within the wavelength range of 725-1050nm, which includes the near-infrared spectrum.

The lens is made of N-BK7, a type of borosilicate glass known for its excellent optical properties, including a high Abbe number and low dispersion. This makes it an ideal material for a wide range of optical applications.

The lens is coated with Qio Bbar Arb2nirnbk7 on both the front and back surfaces. This coating is designed to enhance the lens's performance by reducing reflection and increasing transmission, thereby improving the overall efficiency of the optical system in which it is used.

The lens is unmounted, meaning it does not come with any housing or mounting hardware. This allows users to integrate it into their existing systems or design custom mounts to suit their specific needs.

According to the vendor's website, this lens is in stock, ensuring quick delivery times for those who need it. The website also provides further technical details and specifications for those who require more in-depth information.