L-MPC015 2 mm Dia. Plano-Concave Lens; EFL=-4mm Uncoated

The L-MPC015 is a plano-concave lens with a diameter of 2 mm, sourced from Ross Optical. This lens is designed for use in micro-optics applications and features a center thickness of 0.8 mm. The effective focal length (EFL) of this lens is -4 mm, indicating that it is a diverging lens, which spreads out light rays that pass through it.

The lens is made from n-BK7 Schott glass, a common material in optical applications due to its high Abbe number and low dispersion. The Abbe number, a measure of the material's dispersion, is 64.2 for n-BK7 Schott, making it a low-dispersion glass. This property is crucial in applications where chromatic aberration, the distortion caused by different wavelengths of light being focused at different points, needs to be minimized.

The lens is uncoated, meaning it does not have any additional layers applied to its surface to alter its optical properties. This can be advantageous in certain applications where the natural properties of the glass are desired, or where cost is a concern. However, it's important to note that uncoated lenses can be more susceptible to surface damage and may have lower transmission rates compared to coated lenses.

The lens is designed to operate at a wavelength of 587.6 nm, which is in the visible light spectrum. This makes it suitable for use in applications where visible light is the primary source, such as in microscopy or other imaging systems.