This is a Plano-Convex lens from Holmarc Opto-Mechatronics, with a diameter of 50mm and a thickness at the edge of 3mm. The Effective Focal Length (EFL) of this lens is 300mm, making it suitable for applications that require a longer focal length. The lens is made of N-BK7 Schott, a popular optical glass known for its excellent optical properties and wide transparency range.
The lens's geometry is spherical, with an inner radius of 0mm and an outer radius of 0mm, indicating a plano surface on one side and a curved surface on the other. The curvature radius (R1) of the curved surface is 156.485mm. This specific lens is uncoated, meaning it does not have any anti-reflective coatings.
This lens is designed to work with a wavelength of 587.6nm, which is the wavelength of the green line in the visible spectrum. It is important to note that the performance of the lens can vary depending on the wavelength of the light it is used with.