公开(公告)号：EP4099674A1

公开(公告)日：2022-12-07

申请号：EP21868277.1

申请日：2021-07-27

申请人： Weihai Hualing Opto-Electronics Co., Ltd.

发明人： JIANG, Li ,  HAN, Xiaowei ,  LIN, Yonghui ,  DAI, Pengfei

IPC分类号： H04N1/031

摘要： The invention discloses a contact image sensor having a preset scanning plane which is used for the surface to be scanned to map to the original copy. The contact image sensor comprises: a timing circuit: for self-generating light source control signal LRDT and line scan control signal TRIG1; a light source: for illuminating the original copy; a lens: for collecting reflected light emitted by the light source reflected by the original copy and emitting the reflected light onto a photoelectric conversion chip; a photoelectric conversion chip: for converting received optical signals into electrical signals; and a data processing unit: emitting trigger pulse TRIG according to the encoder transmitting the object to be detected, receiving and processing electrical signals output by the photoelectric conversion chip; the photoelectric conversion chip of the invention has the same size of the photoelectric signal output, ensuring the output stability, dynamic range and sensitivity of the image sensor. The invention discloses a contact image sensor having a preset scanning plane which is used for the surface to be scanned to map to the original copy. The contact image sensor comprises: a timing circuit: for self-generating light source control signal LRDT and line scan control signal TRIG1; a light source: for illuminating the original copy; a lens: for collecting reflected light emitted by the light source reflected by the original copy and emitting the reflected light onto a photoelectric conversion chip; a photoelectric conversion chip: for converting received optical signals into electrical signals; and a data processing unit: emitting trigger pulse TRIG according to the encoder transmitting the object to be detected, receiving and processing electrical signals output by the photoelectric conversion chip; the photoelectric conversion chip of the invention has the same size of the photoelectric signal output, ensuring the output stability, dynamic range and sensitivity of the image sensor.