Intelligent lighting for precise machine vision applications

Included in all FASTUS intelligent lighting models is the FALUX brightness variation correction circuit, as an example the diagram on the right illustrates the sensing circuitry that is fitted to the OPB-S Bar Light.
Using the constant current circuit dependent on the input voltage, any variations in the forward current of individual LEDs are corrected for uniform brightness. Meanwhile, the temperature compensation circuit handles fluctuations in brightness due to increases in temperature after lighting or changes in the ambient temperature.
The brightness of each LED is fixed, virtually eliminating variations in brightness following increases in temperature. Whether with continuous illumination or ON/OFF control, brightness remains fixed.

FALUX Sensing is available with the appropriate FASTUS controller and provides monitoring of brightness and temperature. In the diagram below, an example is shown with the OPF backlight Series where a feedback loop is created with the light and controller to ensure consistent illumination over time.
LED brightness sensing is performed using multiple built-in photodiodes. This allows for accurate measurement of LED brightness not only during continuous illumination but also with short period illumination. Absolute brightness is stored in the lighting’s internal memory to allow for instrumental error adjustment.
FALUX Sensing also makes it possible to measure both the LED brightness of lighting and the internal temperature, and then to monitor those measurements on the power supply side. Based on the monitored values, feedback control can also be performed from the OPPF Series controller, making it possible to maintain the factory default brightness for around 40,000 hours. All significant lighting data is also available, via Ethernet, to Industry 4.0 systems.