The 67-151 25.0mm Dia. x 300.0mm FL is a Plano-Convex lens, uncoated, sourced from the renowned optical vendor, Edmund Optics. This lens, with a base shape of a circle, is a Spherical Lens type, specifically a Plano-Convex lens, which is a simple lens with one side flat and the other side curved.
The lens has a diameter of 25.0mm, with a thickness at the edge of 2.5mm and a thickness at the center of 3.0mm. The Effective Focal Length (EFL) of this lens is 300.0mm, making it suitable for applications that require a long focal length. The Radius of Curvature (R1) of the curved side is 155.04mm, and the Back Focal Length (BFL) is 298.02mm. The Inner Radius and Outer Radius are both 0mm, indicating that the lens is uniformly curved.
The lens is made of N-BK7 Schott, a popular optical glass due to its excellent optical properties and relatively low cost. The wavelength for this lens is 587.6nm. The lens does not come with any coating, which may affect its performance in certain applications. However, the uncoated feature can be advantageous in applications where coating may interfere with the desired optical properties.