With the advancement of the meta-universe industry, light field display technology has emerged as a research focal point in the realm of information display technology due to its seamless integration of digital and physical worlds. It is exhibiting an upward trend towards more viewpoints, higher viewpoint density, and faster rendering speed. However, extant optical field display technologies are confronted with numerous challenges such as low resolution, limited depth perception, and visual fatigue. Based on the principle of human stereoscopic vision perception, this paper presents a comprehensive overview of the imaging principles and typical schemes employed in current light field display technologies, including double view, multi-view and super-multi-view. Meanwhile, an overview and comparison of current virtual view generation technologies based on single-source and multi-source approaches is provided, with a focus on the feasibility and implementation efficiency of each technology in terms of virtual view quality and rendering speed. Additionally, future development directions for optical field display technology are also anticipated.