A240-A 9.94 mm Dia. D-LAK6 Molded Glass Aspheric Lenses; EFL=8 mm; NA=0.5 AR 350-700nm

The A240-A is a high-quality aspheric lens from Thorlabs, designed with a 9.94 mm diameter and a molded D-LAK6 CGDM material. This lens is specifically engineered for use in the 780 nm wavelength range, making it suitable for a variety of applications that require precise optical performance.

The lens features an effective focal length (EFL) of 8 mm, which is a crucial parameter in determining the lens's magnification and field of view. The A240-A also boasts a numerical aperture (NA) of 0.5, indicating its ability to gather and focus light efficiently. This makes it an excellent choice for applications that require high light-gathering capabilities.

The A240-A's aspheric design is another notable feature. Aspheric lenses are known for their ability to reduce spherical aberration, a common optical issue that can degrade image quality. This makes the A240-A an ideal choice for applications that require high-resolution, high-contrast imaging.

The lens is coated with a broadband anti-reflective coating (AR 350-700nm) on both the front and back surfaces. This coating reduces unwanted reflections and increases transmission, further enhancing the lens's performance.

According to the vendor, Thorlabs, the A240-A is currently in stock, and the web link provided leads to a valid product page. This information assures users of the lens's availability and the reliability of the provided data.