G314321000 25.4 mm Dia. N-BK7 Plano-Concave Lens; EFL=-50mm Uncoated

This is the G314321000 25.4 mm Dia. N-BK7 Plano-Concave Lens, a high-quality optical component sourced from Qioptiq Photonics. The lens, which has a diameter of 25.4 mm, is designed for use in a variety of optical systems where a negative focal length is required.

The lens is made from N-BK7, a popular optical glass known for its excellent optical properties. This material is characterized by a high refractive index and low dispersion, making it ideal for a wide range of applications. The lens's geometry includes a center thickness of 1.5 mm and an effective focal length (EFL) of -50 mm, indicating its concave shape.

The lens's inner and outer radii are both zero, suggesting a simple, straightforward design. The lack of a coating indicates that this lens is uncoated, which may be suitable for certain applications where anti-reflection properties are not critical. However, users should be aware that uncoated lenses can suffer from increased reflection, which may affect overall system performance.

The lens's single wavelength of 588 nm suggests it is designed for use in monochromatic systems. However, its high-quality N-BK7 material and simple design make it a versatile option for many optical applications.

According to the vendor's website, this lens is currently in stock, making it a readily available option for those in need of a high-quality, concave lens.