LC1258 N-BK7 Plano-Concave Lens; Dia:25 mm; f=-75.0 mm Uncoated

The LC1258 N-BK7 Plano-Concave Lens is a high-quality optical component sourced from Thorlabs, a leading vendor in the field of optical components. This lens, with a diameter of 25 mm, is designed for use in a wide range of optical systems, offering excellent performance and reliability.

The lens is made from N-BK7, a popular glass type known for its excellent optical properties. This material, also known as Schott glass, is widely used in the optical industry due to its low dispersion and high transmission across a broad spectrum. The N-BK7 designation indicates that this lens is made from a high-quality, precision-ground glass, ensuring optimal performance.

The LC1258 lens features a plano-concave geometry, meaning one side is flat (plano) while the other side is curved inward (concave). This design is often used in optical systems to diverge or spread out light. The lens has a focal length of -75.0 mm, indicating that it will cause incoming light to spread out at a rate determined by this value.

The lens has a center thickness of 3.5 mm and an edge thickness of 5.6 mm. This ensures the lens is robust and durable, while also minimizing potential distortions caused by the lens's thickness. The lens's inner and outer radii are both 0, indicating a sharply curved concave surface.

The lens is uncoated, meaning it does not have any additional layers applied to its surface to alter its optical properties. This can be beneficial in certain applications where a natural lens surface is desired. However, in situations where improved transmission, reduced reflection, or protection against environmental factors is needed, a coated lens may be more suitable.

The LC1258 lens is designed for use at a wavelength of 632.8 nm. This wavelength is commonly used in laser systems and other optical applications, making this lens a versatile choice for many optical setups.