OL 462 Calibration Source Controller w/462-AU Calibration Source Optics Head from OPTE-E-MA Engineering
Variable low and high level radiance standards
These radiance standards are based on an integrating sphere coated with PTFE to realize a uniform illumination. The radiance (and luminance) can continuously be adjusted via a micrometer screw.
The OL 455 is a variable standard for a high radiance.The OL 462 is an equivalent to the OL 455. It is, however, automated by a microprocessor control. All standards mentioned above are equipped with a finely matched photodiode which is used a monitoring diode whose value is calibrated to luminance.