SLSQ-15-70N 15.0 mm Dia. x -70.0 mm FL; Plano-Concave Lens Uncoated

The SLSQ-15-70N is a Plano-Concave Lens with a diameter of 15.0 mm and a focal length of -70.0 mm, making it a negatively powered lens. This lens is sourced from OptoSigma, a renowned vendor in the optical industry, and is uncoated. The lens is made of fused silica, a material known for its excellent optical properties, including high transparency and resistance to thermal shock.

The lens's geometry is characterized by its edge thickness of 2.9 mm and center thickness of 2 mm. The inner and outer radii are both 0 mm, indicating a planar surface on one side and a concave surface on the other. The back focal length (BFL) is -71.4 mm, slightly longer than the effective focal length (EFL) of -70 mm. This discrepancy is due to the lens's concave shape, which causes the light to converge before it reaches the focal point.

The SLSQ-15-70N is designed to operate at a wavelength of 546.1 nm, typically used in monochromatic light applications. It is a spherical lens, meaning it has a constant curvature throughout its surface. This type of lens is commonly used in optical systems due to its simplicity and versatility.

Please note that the lens is uncoated, which means it does not have any anti-reflective or protective coatings. This may result in unwanted reflections and could make the lens more susceptible to damage. However, uncoated lenses are often preferred for certain applications due to their lower cost and higher damage threshold.

For more information, including pricing and availability, please refer to the vendor's website using the provided weblink.