ACL12708U-B ∅1/2" Aspheric Condenser Lens; f=8 mm, NA=0.78 AR 650-1050nm

The ACL12708U-B is an Aspheric Condenser Lens, designed with a circular base shape and a diameter of 12.7 millimeters. This lens is sourced from Thorlabs, a reputable vendor known for its high-quality optical elements. The lens is designed to work with a wavelength of 633 nanometers, making it suitable for a wide range of optical applications.

The lens features an effective focal length (EFL) of 8 millimeters, which is a crucial parameter in lens selection. The EFL determines the lens's magnification power and is inversely proportional to the angle at which the lens captures or focuses light. A shorter focal length, like the one in this lens, results in a wider field of view and a larger image when used for imaging applications.

The ACL12708U-B has a high numerical aperture (NA) of 0.78, which is another key specification. The NA is a measure of the lens's light-gathering ability and its ability to resolve fine details. A higher NA, as in this case, allows for a larger light-gathering angle and better resolution, making this lens ideal for high-resolution applications.

The lens is made from b270 Schott, a high-quality optical glass known for its excellent optical properties. The lens's geometry includes an inner radius of 0, an outer radius of 0, a thickness at the edge of 1.6 millimeters, and a thickness at the center of 7.5 millimeters.

The lens's front and back surfaces are coated with tho b bbar, a broadband anti-reflection coating that reduces surface reflections and increases transmission over a wide range of wavelengths, specifically from 650 to 1050 nanometers. This coating enhances the lens's performance in multi-wavelength applications.