公开(公告)号：US20180008214A1

公开(公告)日：2018-01-11

申请号：US15547095

申请日：2016-01-15

Applicant: Teledyne e2v Semiconductors SAS

Inventor： Caroline PAPAIX ,  Florian JULIEN ,  Nathalie PASCAL ,  Stéphane CRESPIN

IPC: A61B6/14 ,  A61B6/00 ,  A61B5/00 ,  H04N3/14 ,  G01T1/20

CPC classification number: A61B6/145 ,  A61B5/0088 ,  A61B6/4233 ,  A61B6/5205 ,  A61B6/545 ,  G01T1/2018 ,  H04N3/155 ,  H04N5/32 ,  H04N5/3696

Abstract: The invention relates to medical imaging and, more specifically, to intraoral dental radiology. The sensor according to the invention includes a series (SPHx) of detection photodiodes for detecting the arrival of an X-ray flash. The series of photodiodes occupies the location of a central column of the matrix of pixels. The signal of the missing pixel in each row can be reconstructed by interpolating the signals provided by the adjacent pixels of the row. The detection photodiodes are identical to the photodiodes of the active CMOS pixels. They are all electrically connected on one side to a reference potential and on the other side to a detection conductor (CD) extending along the series of photodiodes. This detection conductor is connected to a detection circuit (DX) delivering a signal for triggering the capture of an image when the detected current or the variation in this current exceeds a threshold showing that an X-ray flash has been initiated.