Imaging system including illuminator and imaging device

An imaging system, comprising:

• a first illuminator that irradiates a subject with light whose intensity varies over time;
• and
• a first imaging device that comprises a first imaging cell having a variable sensitivity, and a first sensitivity control line electrically connected to the first imaging cell, wherein
• the first imaging cell comprises a photoelectron conversion area that receives light from the subject to generate a signal charge, and a signal detection circuit that detects the signal charge,
• during an exposure period from a reset of the first imaging cell until a readout of the signal charge accumulated in the first imaging cell by exposure, the first sensitivity control line supplies to the first imaging cell a first sensitivity control signal having a waveform expressed by a first function, and
• the first function is a Walsh function that is not a constant function.

An imaging system, comprising:

• a first illuminator that irradiates a subject with light whose intensity varies over time;
• and
• a first imaging device that comprises a first imaging cell having a variable sensitivity, and a first sensitivity control line electrically connected to the first imaging cell, wherein
• the first imaging cell comprises a photoelectron conversion area that receives light from the subject to generate a signal charge, and a signal detection circuit that detects the signal charge,
• during an exposure period from a reset of the first imaging cell until a readout of the signal charge accumulated in the first imaging cell by exposure, the first sensitivity control line supplies to the first imaging cell a first sensitivity control signal having a waveform expressed by a first function, and
• during a second exposure period later than the exposure period, the first sensitivity control line supplies to the first imaging cell a third sensitivity control signal having a waveform expressed by a third function obtained by time-shifting the first function.

An imaging system, comprising:

• a first illuminator that irradiates a subject with light whose intensity varies over time;
• and
• a first imaging device that comprises a first imaging cell having a variable sensitivity, and a first sensitivity control line electrically connected to the first imaging cell, wherein
• the first imaging cell comprises a photoelectron conversion area that receives light from the subject to generate a signal charge, and a signal detection circuit that detects the signal charge,
• during an exposure period from a reset of the first imaging cell until a readout of the signal charge accumulated in the first imaging cell by exposure, the first sensitivity control line supplies to the first imaging cell a first sensitivity control signal having a waveform expressed by a first function, and
• during a second exposure period later than the exposure period, the first sensitivity control line supplies to the first imaging cell a third sensitivity control signal having a waveform expressed by a constant function.