Detection device including light sources along an outer circumference of two detection areas each of the detection areas having a specific scan direction

A detection device comprising:

• a sensor base;
• a plurality of photoelectric conversion elements that are provided in a detection area of the sensor base and are configured to receive light incident thereon and output signals corresponding to the received light;
• a plurality of switching elements provided in the respective photoelectric conversion elements;
• a plurality of gate lines that are coupled to the switching elements and extend in a first direction;
• a first light source configured to emit first light having a first maximum emission wavelength;
• and
• a second light source configured to emit second light having a second maximum emission wavelength,
• wherein
• the detection area has a first detection area and a second detection area adjacent to each other in a second direction intersecting the first direction,
• the first light source and the second light source are arranged in the second direction along an outer circumference of the detection area,
• the first light source is provided in a position corresponding to the first detection area and is configured to emit the first light in a direction parallel to the first direction,
• the second light source is provided in a position corresponding to the second detection area and is configured to emit the second light in the direction parallel to the first direction, and
• the detection device further comprises a gate line drive circuit configured to
• sequentially supply drive signals to the gate lines provided in the first detection area in a first scan direction and
• sequentially supply the drive signals to the gate lines provided in the second detection area in a second scan direction opposite to the first scan direction.