Hamamatsu Photonics has been granted a patent for a light detection device that includes an avalanche photodiode and temperature compensation diodes for gain adjustment. The device features specific placement of components for efficient temperature compensation. GlobalData’s report on Hamamatsu Photonics 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 Hamamatsu Photonics, Welding robots was a key innovation area identified from patents. Hamamatsu Photonics's grant share as of February 2024 was 57%. Grant share is based on the ratio of number of grants to total number of patents.
Temperature-compensated light detection device with avalanche photodiode
The granted patent (Publication Number: US11927478B2) discloses a light detection device comprising a light detection unit with at least one avalanche photodiode, temperature compensation diodes for gain adjustment, and a terminal connecting them in parallel. The device includes a light detection region with the avalanche photodiode, a first temperature detection region with one temperature compensation diode, and a second temperature detection region with the remaining temperature compensation diodes, with the light detection region in between.
Furthermore, the device includes multiple temperature compensation diodes with common breakdown voltages, distributed in the first and second temperature detection regions. Additionally, there are third and fourth temperature compensation diodes with different breakdown voltages, also placed in the respective temperature detection regions. The light detection unit may consist of multiple avalanche photodiodes in the light detection region, enhancing the device's light detection capabilities.
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GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.
