Rolling Shutter Optical Sensor With LC Shutter for Distortion-Free Detection

The patent segments the light reception function by introducing an LC shutter that operates independently from the rolling shutter image sensor. The LC shutter divides the continuous light stream into discrete time intervals, allowing the rolling shutter to capture images without the rolling shutter effect, thereby achieving global shutter functionality through temporal segmentation of light admission.

The LC shutter acts as an intermediary component between the scene and the rolling shutter image sensor. By controlling light admission in synchronized time intervals, the LC shutter mediates the interaction between the moving object and the sensor, enabling distortion-free capture without requiring a global shutter sensor.

The patent implements periodic action by synchronizing the LC shutter's light admission intervals with the rolling shutter's readout cycles. The LC shutter opens and closes periodically to admit light only during specific time windows that correspond to complete frame exposures, converting the continuous rolling readout into discrete, synchronized capture events that eliminate distortion.

The LC shutter performs preliminary action by pre-filtering ambient light before it reaches the image sensor. By controlling which time intervals allow light passage, the LC shutter prepares the light stream in advance, ensuring that only light from the desired temporal window reaches the sensor during the critical exposure period.