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Years Active: 2015-2024
Title: The Innovations of Christian Kalkschmidt
Introduction
Christian Kalkschmidt is a notable inventor based in Aachen, Germany. He has made significant contributions to the field of LED technology, holding a total of 6 patents. His work focuses on enhancing the efficiency and functionality of lighting systems.
Latest Patents
One of his latest patents involves operating an LED matrix where the power supply voltage is less than the total forward voltage of the LEDs. This innovative lighting unit includes a power supply that provides a maximum voltage and multiple LED lighting circuits. Each circuit consists of an LED string, multiple switches, a switching sequencer, and a switch controller. The LED string features multiple series-connected emitters, with a total forward voltage that exceeds the maximum voltage of the power supply. The switches are coupled in parallel with respective LEDs, and the switching sequencer provides a sequence of switching patterns to ensure that the total forward voltage of simultaneously active LEDs does not exceed the maximum voltage of the power supply. The switch controller actuates the switches according to these patterns. Additionally, he has developed an LED driver, lighting system, and driving method that prolongs the lifetime of luminous output. This driver implements a first constant-current drive scheme for a range of sensed voltages up to a threshold voltage, followed by a second drive scheme with a lower current.
Career Highlights
Christian Kalkschmidt has worked with prominent companies in the industry, including Oledworks GmbH and Koninklijke Philips N.V. His experience in these organizations has allowed him to refine his skills and contribute to groundbreaking advancements in LED technology.
Collaborations
Throughout his career, Kalkschmidt has collaborated with talented individuals such as Etienne Nicolaas Kathalijntje Paulus Marie Eberson and Dirk Hente. These partnerships have fostered innovation and creativity in his projects.
Conclusion
Christian Kalkschmidt's contributions to LED technology and his impressive portfolio of patents highlight his role as a leading inventor in the field. His work continues to influence the development of efficient lighting solutions.