In the development of image sensor chips, “Overall system gain” refers to the overall gain of the entire imaging system, which is the extent to which the light signal captured by the image sensor is amplified. This gain is used to adjust the brightness of the image so that we can see a clearer picture. When increasing the Overall system gain, the image becomes brighter, but noise or distortion may also be introduced. Simply put, Overall system gain is like adjusting the camera’s exposure so you can take brighter or darker photos depending on your needs. In the development of image sensors, measuring Overall system gain is to ensure image quality and performance.
The principle of measuring “Overall system gain” involves the processing and enhancement of light signals.
The operating principle is as follows:
In summary, the principle of measuring Overall system gain involves adjusting the brightness of the light signal, then comparing the signal before and after gain to determine the effect of the gain. This is to ensure that the image sensor can correctly capture the light signal and display the image at the proper brightness.