SLB-40-200P 40.0 mm Dia. x 200.0 mm FL; Plano-Convex Lens Uncoated

The SLB-40-200P is a 40.0 mm diameter, plano-convex lens with a focal length of 200.0 mm, sourced from OptoSigma. This lens is made of n-BK7 Schott glass, a popular material for its high refractive index and low dispersion. The lens's geometry includes a 2 mm edge thickness and a 3.9 mm center thickness, providing a robust structure suitable for various applications.

The lens's design features a spherical shape, with a radius of curvature of 103.8 mm on the convex side. The back focal length is 197.4 mm, and the effective focal length is 200.0 mm. The lens is uncoated, offering a clear, unaltered view of the light path but without any additional protection or enhancement features.

This lens is ideal for use in monochromatic applications at a wavelength of 546.1 nm. Its uncoated surface ensures high light transmission, making it suitable for applications where high transmittance is required. However, it may not perform optimally in broad-spectrum or high-power applications due to the lack of protective coating.