Lighting patents and software by Nucon !

  • 2013 usage of PWM software modules for driving LEDs
  • 2013 Temperature of LED is monitored without temp sensor.
  • 2015 Patents applied in the US and Germany for LED testing method to determine LED junction temperature.
  • 26th April 2016 US PATENT 9,326,349 LED TESTING METHOD AND ARTICLE is granted !
  • German Patent granted 2016 November 7th
  • Article in German magazin 19.04.2018
  • 30.11.2021 exclusive license agreement signed based on DE202013003681, replacing a digital IC for controlling LED current by direct steering out of microcontroler directly.

The new method is based on short interuptions of the LED supply, to capture the forward voltage of the LED at low current condition. During the interuption a small capacitance is discharged over the LED to supply the measurment current.

Because this interuption can be kept very short it does not interfere with flicker video imaging even when using a slow rate of measurements.
When using a slow rate the dimming should be performed by current dimming having a fixed duty cycle.
When using high frequency rates like 1 kHz the dimming nor the temp sensing does lead to flicker when taking a movie.

The effect is shown in the video below!


tested and available on demo driver boards. A hot idea to keep the quality of your LEDs by granting theiy are cool enough :)