67-512 12.7mm Dia. x 38.1mm FL; NIR II Coated; Plano-Convex Lens NIR II 750-1550nm

This is a 67-512 Plano-Convex Lens, a high-quality optical component sourced from Edmund Optics. The lens boasts a diameter of 12.7mm and a focal length of 38.1mm, making it suitable for a wide range of applications.

The lens is made from n-BK7 Schott, a popular optical glass due to its excellent optical properties and versatility. It has a refractive index of 1.5168 at 587.6nm, which contributes to its high-performance capabilities.

The lens features a plano-convex geometry, meaning one side is flat while the other is curved. The curvature of the lens is defined by a radius of 16.43mm, which is the radius of the curvature of the curved surface. The lens's center thickness is 3mm, while its edge thickness is 1.72mm, providing a robust structure.

The lens is coated with EDM NIR-II std curve on both the front and back surfaces. This coating enhances its performance in the near-infrared (NIR) spectrum, specifically between 750nm and 1550nm. This makes it ideal for applications that require high-transmission in the NIR region, such as night vision, thermal imaging, and spectral analysis.

In terms of its shape, the lens is circular, allowing for a wide field of view. The lens's effective focal length (EFL) is 31.8mm, which is the distance from the lens's center to the focal point when the lens is imaging an object at infinity.

The lens's back focal length (BFL) is 29.81mm, which is the distance from the lens's rear surface to its focal point. This information is crucial when designing optical systems as it helps in determining the position of the lens within the system.

In conclusion, this 67-512 Plano-Convex Lens is a versatile and high-performance optical component, ideal for applications that require high transmission in the NIR region. Its robust construction, coupled with its high-quality coating, makes it a reliable choice for various optical systems.