112-0252E 25.4 mm Dia. x -750 mm FL; Uncoated; Plano-Concave Lens

The 112-0252E is a Plano-Concave Lens, a type of spherical lens, sourced from EKSMA Optics. This lens is characterized by its circular base shape and uncoated surface. The lens has a diameter of 25.4 mm and a thickness of 4 mm at the edge, tapering to 3.8 mm at the center. It boasts an effective focal length (EFL) of -750 mm, making it suitable for applications requiring strong negative magnification.

The lens's geometry includes an inner radius of 0 mm and an outer radius of 0 mm, indicating a plano surface on one side and a concave surface on the other. The curvature of the concave surface is defined by a radius of -389 mm. This lens is made from N-BK7 Schott, a popular optical glass known for its excellent optical properties and versatility.

The lens is designed to operate at a wavelength of 546 nm. It is important to note that this lens is uncoated, meaning it does not have any anti-reflective or other surface treatments. This may affect its performance in high-light applications, but it can be beneficial in applications where surface treatments may interfere with the desired optical effects.