“Kuafu chasing the sun” is a Chinese mythology story, describing the desire of the ancients for truth of the light. In the Bible “Job” section 24 chapter 38, it tells “ Where is the light  separated? ”, which inspired human beings to researching optics. A large number of achievements in the field of optics research from Eastern and Western countries have been recorded after human beings explored for thousands of years . For ancient optics, "The Classic of Mohists" firstly presented and explained the 8 optical phenomenon about 2300 years ago. At the same time, Euclid, the ancient Greek mathematician, finished the “Catoptrics” which was considered as one of the early works of geometrical optics. For modern optics, “Jingjinglingchi”, written by Zheng Fuguang is the first scientific work in the optical field of China. Johannes Kepler, the founder of western modern optics, composed the “Dioptrice” which became the classical works of geometric optics later. Human beings have been interested in the exploration of optical phenomena until now. Optical imaging system has always been a hot spot for researchers. From the vast universe to the tiny micro-organisms, optical imaging technology plays a vital role in exploring the unknown world. Optical imaging technology can be dated from the early 17th century when the telescope and optical microscopy have been invented, and in 1873 the microscope imaging theory and the verification were proposed by Abbe. In 1950s, scientists began to combine mathematics, electronic technology and communication theory with optics. The concepts, such as spectrum, spatial filtering, carrier, linear transformation and correlation operations, were introduced to optics. As a result, the spatial spectral distribution was used to describe optical images. In 1971, Gabor, the winner of Nobel Prize in Physics, presented the predecessor of modern holographic, wavefront reproduction principle. The invention of laser has promoted the development of holography, and leads to the formation of a new imaging technology, namely the Information optical imaging. At present, optical imaging technology has made great progress in the applications of space exploration, life sciences and other fields, and new principles and methods are emerging. In the current issue, there are six articles belonging to the frontier research of optical imaging, which report the principles and methods of imaging system applied in infrared imaging, super-surface holography, visual travel aids, microscopy and three-dimensional measurement technology. These researches show the development of optical imaging research. In 1887, Hertz accidentally discovered the photoelectric effect in the experimental study of Maxwell's electromagnetic theory. The performance of this photo-electricity is used for the conversion between optical signals and electrical signals. After years of development, it forms an optical and electrical interdisciplinary - - photoelectric sensing and detection technology, which is used to measure and record the light field information at a particular time or time period. In general, it not only covers the digital signal data processing, analysis and information extraction of the recorded light field, but also includes the detection and sensing method of light as the measuring medium. Photoelectric effect is a conversion bridge between signals that has changed the way of human understanding of information. Moreover, this effect attracted much attention in the field of optoelectronics. In the current issue, there are 3 articles related to space sensing detection and biomedical sensing are presented, which display the theoretical model or methods of the sensing , including information processing algorithms, performance testing, environmental impact and other aspects of research. These researches shows the wide applications of optical sensing technology in various fields. Laser technology is considered as one of the greatest inventions of the twentieth century. In 1960, American scientist Mehman invented the world's first lasers, and the first lasers was invented in the following year. The characteristics of lasers including monochromatic, narrow spectrum, high power density promoted a large number of applied researches and a new technical field was formed. The research of laser technology contributed to the invention of new advanced methods and technical means in industrial production and processing, which promoted the progress of science and technology and the development of social productivity. One article in the current issue presents the development of laser shock peening equipment.