The FP-D-905-5-C-F part of Laser Components is a 905nm Collimator assembly that is used to collimate and focus a 905nm diode laser. It includes a 5W laser head with a temperature-controlled collimator, a heat sink with a thermoelectric cooler, and a focusing lens. The lens is adjustable, allowing for precise laser beam shaping. The collimator is built with a robust and rugged design, making it ideal for demanding, long-term applications in industrial settings.