Patent ID: 11520014

Abstract:
An optoelectronic integrated circuit is provided for use in a LIDAR system that includes a light source that is configured to emit an optical TOF pulse for reflection by an object. The integrated circuit includes an array of pixel elements arranged in columns and rows with at least one column line for each column of pixel elements. Each pixel element includes a vertical cavity thyristor device and a capacitor that are configured such that the capacitor generates a measured voltage signal corresponding to TOF of the optical TOF pulse that returns from the object. The measured voltage signal is transferred to the at least one column line for the pixel element in order to determine depth of the object. Switching action of the thyristor device due to absorption of light of the TOF return pulse can be configured to interrupt a charge integration function of the capacitor such that the capacitor generates the measured voltage signal corresponding to TOF of the optical TOF pulse. Other embodiments are provided that employ the thyristor devices of the pixel elements of spatial imaging of the object.