89-442 25mm Dia. N-BK7 Hyperbolic Aspheric Lens; EFL=100mm; NA=0.13 Laser V-Coat 1064nm

The 89-442 is a high-quality aspheric lens from Edmund Optics, designed for use with a wavelength of 1064nm. This lens boasts a 25mm diameter and an effective focal length (EFL) of 100mm, making it a versatile choice for a variety of applications.

The lens is made from N-BK7, a popular glass type known for its excellent optical properties. This material is particularly suitable for use in the infrared region, making the 89-442 an ideal choice for applications such as laser systems and optical imaging.

The aspheric design of the lens is another key feature. This design allows for superior optical performance, reducing spherical aberration and improving image quality. The lens has a hyperbolic profile, which is particularly effective at focusing light to a single point.

The lens is coated with Edmund Optics' Laser V-Coat, which is specifically designed for use with 1064nm lasers. This coating helps to reduce reflection and increase transmission, improving the efficiency of your system.

The lens has a numerical aperture (NA) of 0.13, which determines the light-gathering ability of the lens. A higher NA allows for a wider angle of acceptance, making this lens suitable for applications where a wide field of view is required.

The lens has a thickness of 2.54mm at the edge and 4.05mm at the center. The front and back surfaces of the lens are coated with the same Laser V-Coat, ensuring optimal performance from both sides.