LIGHT DETECTION DEVICE

To provide a light detection device which has compact configuration, and which exhibits improved degree of accuracy and precision when used for a flash system measurement device.SOLUTION: A light detection device 1 comprises a circuit board 20 including a plurality of signal processing unit SP proce...

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Bibliographic Details
Main Authors HASHI TATSUYA, BABA TAKASHI, NAKAMURA SHIGEYUKI, IWASHINA SHINYA
Format Patent
LanguageEnglish
Japanese
Published 13.09.2021
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Summary:To provide a light detection device which has compact configuration, and which exhibits improved degree of accuracy and precision when used for a flash system measurement device.SOLUTION: A light detection device 1 comprises a circuit board 20 including a plurality of signal processing unit SP processing a detection signal output from a corresponding pixel. Light reception regions of a plurality of avalanche photodiodes are two-dimensionally arranged for each pixel. In each signal processing part SP, a timing measuring unit 42 measures timing at which light enters the corresponding pixel, on the basis of a detection signal. An energy measuring unit 43 measures energy of incident light to the corresponding pixel on the basis of the detection signal. A storage unit 44 stores a result of measurement performed in the timing measuring unit 42 and the energy measuring unit 43. A light detection region α in which a plurality of pixels is provided, and a signal processing region β in which a plurality of signal processing unit is provided, overlap at least partially.SELECTED DRAWING: Figure 7 【課題】フラッシュ方式の計測装置に用いられる場合に、コンパクトな構成で検出の正確度及び精度が向上されている光検出装置を提供する。【解決手段】光検出装置1において、回路基板20は、対応する画素から出力された検出信号を処理する複数の信号処理部SPを有する。複数のアバランシェフォトダイオードの受光領域は、画素毎に二次元配列されている。各信号処理部SPにおいて、タイミング計測部42は、対応する画素に光が入射したタイミングを検出信号に基づいて計測する。エネルギー計測部43は、対応する画素への入射光のエネルギーを検出信号に基づいて計測する。記憶部44は、タイミング計測部42及びエネルギー計測部43における計測結果を記憶する。複数の画素が設けられている光検出領域αと、複数の信号処理部が設けられている信号処理領域βとは、少なくとも一部において重なっている。【選択図】図7
Bibliography:Application Number: JP20200033198