LE1076 50.8 mm Dia. N-BK7 Positive Meniscus Lens; EFL=100mm Uncoated

The LE1076 is a 50.8 mm diameter Spherical Lens with a Positive Meniscus shape, sourced from the reputable optical components manufacturer, Thorlabs. This lens is specifically designed for use in the visible light spectrum, with a central wavelength of 587.6 nm.

The lens features a N-BK7 substrate from Schott, a popular material known for its excellent optical properties. N-BK7, or borosilicate crown glass, offers a high Abbe number, low dispersion, and high transmission, making it an ideal choice for various optical applications.

The LE1076 has an effective focal length (EFL) of 100 mm, providing a moderate level of magnification. Its geometry includes an outer diameter of 50.8 mm, a center thickness of 9.7 mm, and an edge thickness of 1.1 mm, contributing to its robust construction.

The lens's surface radii are specified as 30.3 mm for the first surface (R1) and 65.8 mm for the second surface (R2). These radii result in a back focal length (BFL) of 88.8 mm, which should be taken into account when integrating this lens into optical systems.

Notably, the LE1076 is uncoated, meaning it does not have any anti-reflective or protective coatings applied to its surfaces. While this may result in a slightly lower transmission efficiency compared to coated lenses, it can be advantageous in applications where specific coating properties are not required.