The 515-1303-03-50F is a Dialight Optopipe® panel mount light pipe designed to direct and diffuse light from surface mount LEDs through a panel-mounted interface. This domed lens variant features a polished surface with SPI aluminum finish and a diffused textured lens surface, providing optimal light distribution for viewing angles. The light pipe has a nominal diameter of 0.122 inches (3.10 mm) with a mounting hole of 0.115 inches (2.92 mm), designed for press-fit installation into panel thicknesses of 0.030 inches minimum. Constructed from RoHS-compliant UL94-V0 water-clear polycarbonate with an oxygen index of 35%, the device operates with low voltage and minimal power consumption, making it ideal for indicator applications in industrial control panels, medical devices, and consumer electronics requiring reliable LED illumination.