Optronic Labs OL 462 calibration source optic head

The Optronic Labs OL 462 is a microprocessor-controlled calibration source controller designed for precise luminance and radiance regulation in integrating-sphere-based calibration systems. Used alongside the OL 462 optics head, it forms a stable, uniform, large-area reference source for calibrating microphotometers, telephotometers, imaging spectroradiometers, image intensifiers, and other radiometric or photometric instruments. The controller manages the system’s 150 W tungsten-halogen lamp, providing automatic ramp-up/ramp-down protection to prevent current surges and enabling smooth, continuous luminance adjustment over more than six decades while maintaining near-constant color temperature. It integrates a two-line, 20-character vacuum-fluorescent display, 20-key keypad, rotary encoder, and full lamp/power monitoring for intuitive operation. Supporting remote placement relative to the optics head, the OL 462 facilitates precise alignment, optional spectral-shaping filters, and spectral radiance calibrations from 350 to 2500 nm, delivering a dependable solution for advanced radiometric and photometric calibration workflows.