112-0207E 25.4 mm Dia. x -40 mm FL; Uncoated; Plano-Concave Lens

The 112-0207E is a plano-concave lens with a diameter of 25.4 mm and a focal length of -40 mm, making it a negatively powered lens. This lens is sourced from EKSMA Optics, a reputable vendor in the optical components industry. The lens is uncoated, which means it does not have any additional layers to protect it from environmental factors or enhance its optical properties.

The geometry of the lens includes a thickness of 5.9 mm at the edge and 1.7 mm at the center. The inner and outer radii are both zero, indicating a plano surface on one side and a concave surface on the other. The effective focal length (EFL) is -40 mm, which is the distance from the lens's secondary focal point to the lens when the object is at infinity.

This lens is made of n-BK7 Schott, a common type of optical glass known for its excellent optical properties and high transmittance in the visible spectrum. The wavelength for this specific lens is 546 nm, which is in the middle of the visible light spectrum.

This lens is suitable for various applications where a negative lens is required. Its compact size and high-quality material make it an ideal choice for beam shaping, collimation, or reduction in optical systems. However, due to its uncoated nature, it may be more susceptible to damage from environmental factors or may not perform optimally in high-intensity light applications.