This lecture discusses the concept of Facet Vision, which utilizes multiple cameras to capture images from various angles for image reconstruction. The instructor explains how this technology can be applied in virtual reality systems, where a 360-degree view is essential. The lecture highlights the use of CMOS image sensors equipped with micro lenses that allow for different angles of light detection. Each micro lens captures light from a specific angle, contributing to a comprehensive image reconstruction process. The instructor also elaborates on the compact design of the sensor chip, which integrates micro lenses, spacers, and diaphragm arrays. The advantages of this system include the ability to achieve high resolutions and perform numerical refocusing, allowing for adjustments in focus after the image has been captured. The lecture concludes with examples of how this technology can enhance digital photography and imaging applications.