Lumentum has been granted a patent for a lidar receiver system that uses multiple photodiodes, amplifiers, and ADCs to accurately detect and process optical reflections. A processor determines bias levels for each photodiode based on digital signals, ensuring consistent current outputs. GlobalData’s report on Lumentum gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on Lumentum, was a key innovation area identified from patents. Lumentum's grant share as of May 2024 was 53%. Grant share is based on the ratio of number of grants to total number of patents.
Patent granted for lidar receiver system with bias determination
A recently granted patent (Publication Number: US12013495B2) discloses a system comprising a receiver equipped with a first photodiode and a second photodiode to receive reflections of an optical beam. The system includes analog-to-digital converters to process signals generated by the photodiodes and a processor to determine biases for each photodiode based on the digital signals. By applying these biases, the system ensures that the currents associated with the analog signals from both photodiodes correspond, allowing for accurate data processing.
Moreover, the system includes components such as transimpedance amplifiers, amplifiers, and direct-current-to-direct-current converters to further enhance signal processing capabilities. The receiver system described in the patent utilizes avalanche photodiodes for efficient operation. Additionally, a method outlined in the patent involves generating analog and digital signals from the photodiodes, determining biases based on these signals, and adjusting the gains of the photodiodes accordingly. This method ensures precise control and optimization of the photodiodes' performance, particularly in converting photocurrent to output signals. Overall, the patent highlights a sophisticated system and method for signal processing in optical beam reflections, showcasing advancements in receiver technology.
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