515-1303-07-00F is a domed optical lens manufactured by Dialight, designed for precision optical applications requiring a curved surface profile. The lens features a polished surface with SPI AL finish and a domed geometry with a major diameter of 0.122 inches (±0.002 inches) and a diffused surface on the underside. Dimension A is 0.700 inches (17.78 mm) and Dimension B is 0.500 inches (12.70 mm), with a draft applied only on the Dimension B portion of the lens length. The product is RoHS compliant, as indicated by the "F" suffix in the part number, and is suitable for indicator lights, display applications, and optical signal transmission in electronic assemblies where controlled light diffusion and durability are required.