The acquisition of depth information via LiDAR sensing is a now a priority for global brands covering a broad range of use cases and this presentation will focus on the rapidly evolving technology developments. Each LiDAR use case has a different set of requirements but every system features the same key functional blocks. Perhaps the most critical of these functional blocks is the sensor, which requires the capability to detect very low signal returns in the presence of a large amount of ambient light. In particular, we will look at how the single-photon sensitive SiPM and SPAD array photodetectors developed by ON Semiconductor can be used to push the performance boundaries and achieve high-resolution 4D imaging (4Di) output: the capability of providing a depth map in addition to an intensity image of the scene. This can be done by using a two-dimensional array of pixels, each compiling a histogram of time-of-flight data from every photon detected by the sensor per measurement and using that to extract the depth and intensity measured by each pixel. ON Semiconductor is developing a series of high-resolution SPAD arrays with 4Di for time-of-flight LiDAR applications, the first of which is the 40-kilopixel Pandion product. Results of the Pandion 4Di LiDAR Demonstration System will be shown and future sensor and system developments will be discussed.
Bahman Hadji is Director of Business Development in the SensL Division of ON Semiconductor’s Intelligent Sensing Group, where he’s responsible for bringing to market high-performance sensors used in LiDAR systems and enabling the LiDAR technology ecosystem to leverage ON’s product portfolio. He has over ten years of experience working with sensing devices, having worked for Aptina Imaging and OmniVision Technologies prior to joining ON Semiconductor in 2017. Bahman obtained both his Bachelor of Applied Science in Computer Engineering and Master of Applied Science in Electrical and Computer Engineering degrees from the University of Waterloo in Canada.